{"id":505,"date":"2026-05-27T06:07:36","date_gmt":"2026-05-27T06:07:36","guid":{"rendered":"https:\/\/isbm-equipment.com\/?p=505"},"modified":"2026-05-27T08:33:42","modified_gmt":"2026-05-27T08:33:42","slug":"single-stage-vs-two-stage-isbm-which-process-is-right-for-your-business","status":"publish","type":"post","link":"https:\/\/isbm-equipment.com\/kk\/application\/single-stage-vs-two-stage-isbm-which-process-is-right-for-your-business\/","title":{"rendered":"Single-Stage vs. Two-Stage ISBM: Which Process Is Right for Your Business?"},"content":{"rendered":"
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ISBM Technology Guide \u00b7 Ever Power Equipment<\/span><\/p>\n

Single-Stage vs. Two-Stage ISBM: Which Process Is Right for Your Business?<\/h2>\n

A definitive technical guide for UK packaging manufacturers, procurement engineers, and operations directors evaluating ISBM machine investment decisions.<\/p>\n

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\u23f1 15 min read<\/span><\/div>\n
\ud83c\udfed UK Manufacturing Focus<\/span><\/div>\n
\ud83d\udd2c Technical Deep Dive<\/span><\/div>\n<\/div>\n<\/div>\n
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\"EverThe global demand for lightweight, high-clarity plastic containers has placed injection stretch blow moulding \u2014 universally known by the abbreviation ISBM \u2014 at the centre of modern packaging manufacturing strategy. Whether you are commissioning a new production line in Birmingham, upgrading ageing equipment in Sheffield, or entering the plastics packaging market for the very first time, understanding the fundamental difference between single-stage ISBM and two-stage ISBM can determine whether your capital investment delivers maximum efficiency, outstanding output quality, and a genuine return on investment. This is not simply a technical question \u2014 it is a strategic business decision that touches tooling costs, energy consumption, material waste, cycle times, and the flexibility of your entire container portfolio. The pages that follow cut through the complexity and deliver a precise, data-driven comparison built on real engineering practice and operational experience gathered across the UK and international packaging industry.<\/p>\n

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\ud83d\udce9 Get a Free Quote \u2192<\/a><\/p>\n

Response within 24 hours \u00b7 UK-tailored solutions \u00b7 sales@isbm-equipment.com<\/a><\/p>\n<\/div>\n<\/div>\n

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What Is ISBM Technology \u2014 and Why Does the Process Choice Matter?<\/h2>\n

Understanding the fundamentals before choosing your production architecture<\/p>\n<\/div>\n

Injection stretch blow moulding is a polymer processing method that combines three distinct manufacturing operations into a seamless, coordinated production sequence: injection moulding of a preform, axial stretching of that preform using a mechanical rod, and radial blow moulding to achieve the final container shape. The result is a bottle, jar, or container with exceptional optical clarity, uniform wall thickness, and superior mechanical strength compared to products made by conventional extrusion blow moulding alone. The biaxial molecular orientation introduced by simultaneous stretching and blowing aligns polymer chains in two directions simultaneously, dramatically improving barrier properties, top-load performance, and resistance to environmental stress cracking. For materials such as PET, PP, and PC, the ISBM process unlocks mechanical properties that simpler forming methods simply cannot replicate \u2014 which is why ISBM machines have become standard capital equipment across the UK packaging sector from the smallest specialist converter to the largest FMCG contract packager.<\/p>\n

\"ISBM<\/p>\n

What makes the decision between single-stage and two-stage ISBM so commercially significant is that each machine architecture embodies a fundamentally different manufacturing philosophy. One approach prioritises thermal efficiency and product quality by keeping the preform continuously warm throughout the complete production cycle; the other prioritises volume output and supply chain flexibility by entirely decoupling preform manufacture from final container forming. Both approaches are proven, legitimate, and widely deployed across sectors ranging from pharmaceutical packaging to food processing, personal care, and industrial chemical distribution. The right answer for your business depends on your specific production volumes, container geometry requirements, material processing needs, and capital investment strategy.<\/p>\n

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ISBM vs. Extrusion Blow Moulding<\/h3>\n

ISBM consistently delivers better optical clarity, tighter dimensional tolerances, and improved barrier performance compared to EBM \u2014 making it the preferred choice for premium UK packaging applications where container quality is a brand differentiator rather than a commodity specification.<\/p>\n<\/div>\n

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UK Market Scale<\/h3>\n

The UK plastics packaging industry processes billions of PET and PP containers each year, with ISBM machines forming the technological backbone of production facilities from Manchester’s logistics corridor to the pharmaceutical manufacturing clusters of Nottingham, Leicester, and the East Midlands.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Process Type 01<\/div>\n

The Single-Stage ISBM Process: One Machine, One Heat Cycle, Complete Thermal Control<\/h2>\n

\"Single-StageIn a single-stage ISBM machine, the entire production sequence \u2014 from raw polymer granules to a finished, quality-inspected container \u2014 occurs within a single integrated system and, crucially, within a single thermal cycle. Plastic resin is injected into a preform cavity under pressures between 100 and 180 MPa, forming a thick-walled intermediate shape. That preform is then transferred \u2014 while still retaining residual heat from the injection stage \u2014 directly into the blow mould station, where it is simultaneously stretched axially by a mechanical rod and inflated radially by high-pressure air. No external reheating energy is required at any point in the process. This thermal efficiency is one of the most commercially compelling arguments for single-stage ISBM technology, particularly in an era of rising UK industrial energy tariffs above 28p per kWh and mounting ESG-driven manufacturing sustainability targets.<\/p>\n

The single-stage approach is particularly well-suited for containers requiring close dimensional control at the neck finish, for wide-mouth jars, and for non-standard oval or rectangular cross-sections that challenge two-stage equipment. Cosmetic packaging manufacturers in London, pharmaceutical bottle producers in the East Midlands, and specialty food container suppliers across Yorkshire regularly specify single-stage ISBM machines precisely because this process inherently avoids the gate vestige marks and crystallisation-related haze that appear in two-stage systems when preforms are not reheated with absolute uniformity across the preform wall section.<\/p>\n<\/div>\n<\/div>\n

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Single-Stage ISBM \u2014 Production Sequence<\/h3>\n
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\u2460 Injection
\nPreform moulded<\/span><\/div>\n

\u2192<\/span><\/p>\n

\u2461 Hot Transfer
\nResidual heat kept<\/span><\/div>\n

\u2192<\/span><\/p>\n

\u2462 Stretch & Blow
\nBiaxial orientation<\/span><\/div>\n

\u2192<\/span><\/p>\n

\u2463 Finished Container
\nEjected & cooled<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Process Type 02<\/div>\n

The Two-Stage ISBM Process: Decoupled Production for Maximum Volume Throughput<\/h2>\n

\"ISBMThe two-stage ISBM process \u2014 frequently referred to as reheat stretch blow moulding \u2014 separates preform manufacture from final container forming into two entirely distinct operations. In stage one, preforms are produced on a dedicated injection moulding machine, then fully cooled to ambient temperature and stored on-site or transported to a separate facility. In stage two, those cooled preforms are fed into a reheat stretch blow machine, where infrared lamps raise them to the optimal processing temperature \u2014 typically 95\u2013115\u00b0C for PET \u2014 before the stretch-blow cycle executes and the finished container is ejected.<\/p>\n

This decoupling creates operational flexibility that single-stage systems cannot match at scale. Preforms can be manufactured at one centralised polymer processing plant in the East Midlands or West Yorkshire while bottle forming takes place at regional filling plants closer to end customers across Scotland, Wales, or the South West. For companies running very high annual volumes \u2014 such as major UK carbonated drink manufacturers or large private-label water suppliers \u2014 two-stage ISBM systems can deliver outputs exceeding 20,000 bottles per hour on a single multi-cavity machine, a throughput level that is architecturally beyond what any single-stage ISBM configuration can achieve.<\/p>\n<\/div>\n<\/div>\n

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Two-Stage ISBM \u2014 Production Sequence<\/h3>\n
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\u2460 Preform Injection
\nStage 1 machine<\/span><\/div>\n

\u2192<\/span><\/p>\n

\u2461 Cool & Store
\nInventory buffer<\/span><\/div>\n

\u2192<\/span><\/p>\n

\u2462 IR Reheat
\n95\u2013115\u00b0C for PET<\/span><\/div>\n

\u2192<\/span><\/p>\n

\u2463 Stretch & Blow
\nHigh output rate<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Single-Stage vs. Two-Stage ISBM: A Comprehensive Decision-Making Comparison<\/h2>\n

Key technical, operational, and commercial factors side by side<\/p>\n<\/div>\n

Choosing between single-stage ISBM and two-stage ISBM is rarely as simple as picking the machine with the lowest purchase price or the highest raw output figure. The decision demands a thorough evaluation of how each production architecture maps against your container designs, target volumes, operational infrastructure, and strategic objectives over a 10\u201315 year investment horizon. The comparison table below summarises the most commercially critical parameters across both process types, drawing on operational experience from packaging facilities across the UK manufacturing landscape. Use it as a structured starting point \u2014 an Ever Power applications consultant can build a bespoke analysis aligned to your precise production scenario.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Comparison Factor<\/th>\nSingle-Stage ISBM<\/th>\nTwo-Stage ISBM<\/th>\n<\/tr>\n<\/thead>\n
Process Stages<\/td>\n1 machine, 1 heat cycle<\/td>\n2 machines, 2 thermal stages<\/td>\n<\/tr>\n
Output Rate<\/td>\n500 \u2013 6,000 bottles\/hr<\/td>\n2,000 \u2013 80,000+ bottles\/hr<\/td>\n<\/tr>\n
Energy Efficiency<\/td>\nHigher \u2713<\/span><\/td>\nLower (reheat energy overhead)<\/td>\n<\/tr>\n
Optical Clarity<\/td>\nSuperior<\/span><\/td>\nVery Good<\/td>\n<\/tr>\n
Capital Investment<\/td>\nLower initial outlay<\/span><\/td>\nHigher (2-machine system)<\/td>\n<\/tr>\n
Container Shape Flexibility<\/td>\nExcellent \u2014 wide-mouth, oval<\/span><\/td>\nPrimarily round standard profiles<\/td>\n<\/tr>\n
Suitable Materials<\/td>\nPET, PP, PC, PETG, PLA<\/td>\nPrimarily PET<\/td>\n<\/tr>\n
Gate Mark \/ Aesthetics<\/td>\nInvisible \/ flush base<\/span><\/td>\nSmall gate mark possible<\/td>\n<\/tr>\n
Factory Floor Space<\/td>\nCompact \u2014 1 machine<\/span><\/td>\nLarge \u2014 2-machine system<\/td>\n<\/tr>\n
Ideal Annual Volume<\/td>\nUp to ~10M units\/yr<\/td>\n10M to 1B+ units\/yr<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n
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Technical Deep Dive<\/div>\n

Working Principle of Single-Stage ISBM Machines<\/h2>\n<\/div>\n
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The mechanical heart of a single-stage ISBM machine consists of four coordinated functional zones operating in a precisely timed rotary or linear sequence. At the injection zone, polymer melt is delivered at pressures between 100 and 180 MPa through a hot runner manifold, filling the preform cavity in a single shot to form the neck thread, shoulder profile, and body wall geometry. The preform then passes to a conditioning station, where zone-by-zone temperature profiling ensures the preform wall reaches a uniform orientation temperature throughout its entire cross-section \u2014 a critical step that directly governs wall thickness distribution in the finished container. Proper conditioning is what separates a well-set single-stage ISBM machine from a poorly optimised one, and it is the area where Ever Power’s applications engineers invest the greatest process development effort during machine commissioning at UK customer facilities.<\/p>\n

At the blow station, a precision-machined stretch rod descends into the conditioned preform at a controlled velocity of 0.8\u20131.5 m\/s, delivering axial elongation of 2.5:1 to 3.5:1. Simultaneously, high-pressure air at 25\u201340 bar inflates the preform radially in two stages: a low-pressure pre-blow phase initiates lateral expansion, followed by a high-pressure final blow that forces the biaxially oriented material firmly against the chilled blow mould cavity walls. Contact with the cooled mould surface instantly freezes the oriented molecular structure into the final container geometry, permanently locking in all the mechanical performance benefits that stretch orientation delivers \u2014 including enhanced gas barrier performance, improved top-load strength, and superior impact resistance.<\/p>\n<\/div>\n

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\"ISBM<\/p>\n

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25\u201340<\/div>\n
bar blow pressure<\/div>\n<\/div>\n
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3.5:1<\/div>\n
max axial stretch<\/div>\n<\/div>\n
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1.5 m\/s<\/div>\n
max rod velocity<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Core Materials in ISBM Production: Polymers, Machine Construction & Tooling<\/h2>\n

What the machine is built from, and what it processes<\/p>\n<\/div>\n

Material selection in ISBM spans two distinct categories: the polymer resins the machine processes to form containers, and the engineering materials used to construct the machine and its tooling. Both categories have profound implications for production quality, operational longevity, energy efficiency, and total maintenance cost over the machine’s service life. A thorough understanding of these material choices allows UK procurement teams to evaluate machine specifications more critically and ask the right technical questions when requesting quotations from ISBM equipment suppliers.<\/p>\n

\"ISBM<\/p>\n

 <\/p>\n

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PET \u2014 Polyethylene Terephthalate<\/h3>\n<\/div>\n
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The dominant processing polymer in both single-stage and two-stage ISBM. PET offers outstanding optical transparency, excellent CO2 and O2 barrier properties, and a highly favourable biaxial orientation response. Intrinsic viscosity ranges from 0.72 to 0.84 dl\/g for ISBM applications. rPET recycled grades are compatible with properly configured single-stage ISBM systems, supporting UK brand owners’ commitments under the UK Plastic Packaging Tax.<\/p>\n<\/div>\n<\/div>\n

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PP \u2014 Polypropylene<\/h3>\n<\/div>\n
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Processed almost exclusively on single-stage ISBM machines due to PP’s narrow processing window and acute sensitivity to haze formation when reheated externally. Random copolymer PP grades at injection temperatures of 240\u2013280\u00b0C consistently produce containers with haze values below 2% \u2014 a performance standard impossible to achieve on two-stage equipment for this material. PP ISBM is the standard process for UK pharmaceutical oral liquid and healthcare bottles.<\/p>\n<\/div>\n<\/div>\n

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Machine Construction & Tooling<\/h3>\n<\/div>\n
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Ever Power ISBM machine frames and platens use EN24 (817M40) alloy steel delivering tensile strength above 850 MPa under rated clamping force. Blow mould tooling is machined from P20 pre-hardened tool steel for production tooling, or 7075-T6 aluminium for prototype and short-run applications. Hot runner nozzles use H13 hot-work tool steel at HRC 48\u201352 surface hardness for extended service intervals.<\/p>\n<\/div>\n<\/div>\n

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PC, PETG & Sustainable Alternatives<\/h3>\n<\/div>\n
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Polycarbonate ISBM containers deliver exceptional impact resistance for reusable vessels and industrial fluid packaging. PETG is rapidly gaining market share in UK premium cosmetics packaging due to its crystal clarity. Bio-based PEF and PLA blends are increasingly processed on Ever Power single-stage ISBM machines configured for lower processing temperatures to support UK sustainability mandates.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Technical Performance Specifications \u2014 Ever Power ISBM Machine Range<\/h2>\n

EP Series single-stage ISBM machines: indicative parameters across the product range<\/p>\n<\/div>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter<\/th>\nEP-1<\/th>\nEP-2<\/th>\nEP-4<\/th>\nEP-6<\/th>\n<\/tr>\n<\/thead>\n
Cavities<\/td>\n1<\/td>\n2<\/td>\n4<\/td>\n6<\/td>\n<\/tr>\n
Clamping Force (kN)<\/td>\n250<\/td>\n450<\/td>\n800<\/td>\n1,600<\/td>\n<\/tr>\n
Max Shot Weight (g)<\/td>\n10\u201325<\/td>\n25\u201360<\/td>\n60\u2013120<\/td>\n120\u2013200<\/td>\n<\/tr>\n
Container Capacity (ml)<\/td>\n30\u2013250<\/td>\n100\u20131,000<\/td>\n200\u20135,000<\/td>\n500\u201310,000<\/td>\n<\/tr>\n
Output (bottles\/hr)<\/td>\n500\u20131,200<\/td>\n1,200\u20132,500<\/td>\n2,500\u20134,500<\/td>\n4,000\u20136,000+<\/td>\n<\/tr>\n
Cycle Time (s)<\/td>\n8\u201312<\/td>\n10\u201316<\/td>\n12\u201320<\/td>\n14\u201322<\/td>\n<\/tr>\n
Power Consumption (kW)<\/td>\n8\u201315<\/td>\n15\u201328<\/td>\n28\u201350<\/td>\n45\u201380<\/td>\n<\/tr>\n
Injection Pressure (MPa)<\/td>\n100 \u2013 180 (all models)<\/td>\n<\/tr>\n
Blow Pressure (bar)<\/td>\n25 \u2013 40 (process dependent)<\/td>\n<\/tr>\n
Axial Stretch Ratio<\/td>\n2.5:1 \u2013 3.5:1 (adjustable)<\/td>\n<\/tr>\n
Hoop Stretch Ratio<\/td>\n2.5:1 \u2013 4.5:1 (geometry dependent)<\/td>\n<\/tr>\n
Platen Material<\/td>\nEN24 alloy steel (817M40) \u2014 850 MPa+ tensile strength<\/td>\n<\/tr>\n
Tooling Material Options<\/td>\nP20 tool steel \/ 7075-T6 aluminium (customer choice)<\/td>\n<\/tr>\n
Hydraulic Pressure (bar)<\/td>\n140 \u2013 180<\/td>\n<\/tr>\n
Control System<\/td>\nSiemens PLC + 10″ HMI touchscreen (UKCA & CE marked)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* All specifications are indicative. Actual values vary by polymer type, container geometry, and production conditions. Contact Ever Power for application-specific data.<\/p>\n<\/div>\n

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Why Choose Single-Stage ISBM<\/div>\n

Six Core Technical Advantages of Single-Stage ISBM Machines<\/h2>\n<\/div>\n
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\u26a1<\/div>\n

Energy Efficiency & Lower Running Costs<\/h3>\n

By eliminating the energy-intensive preform reheating stage entirely, single-stage ISBM machines typically reduce energy consumption per unit by 20\u201335% compared to two-stage systems at equivalent output rates. For UK manufacturers facing electricity costs above 28p\/kWh, this saving directly reduces per-unit production cost and measurably improves the facility’s carbon intensity metric \u2014 a figure increasingly scrutinised under supply chain sustainability programmes by major UK retailer groups and brand owners with net-zero commitments.<\/p>\n<\/div>\n

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\ud83d\udd2c<\/div>\n

Superior Optical Clarity & Premium Aesthetics<\/h3>\n

Because the preform material in a single-stage ISBM machine is never permitted to fully cool and crystallise, resulting containers consistently achieve haze values below 1.5% \u2014 a quality standard particularly valued in cosmetics packaging, premium spirits bottling, and high-end food presentation. The complete absence of gate marks on the base of single-stage ISBM containers is an aesthetic advantage that resonates strongly with UK luxury brand packaging teams and high-street retail buyers alike.<\/p>\n<\/div>\n

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\ud83c\udfaf<\/div>\n

Broader Material & Container Design Flexibility<\/h3>\n

Single-stage ISBM technology opens access to materials that are impractical or impossible to run on two-stage systems: polypropylene, polycarbonate, PETG, PLA, and emerging bio-based polyesters. Simultaneously, integrated thermal control enables the production of wide-mouth jars, oval-section bottles, non-round industrial containers, and complex shoulder geometries that would generate unacceptable wall thickness variation on a reheat blow machine.<\/p>\n<\/div>\n

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Compact Footprint & Lower Capital Outlay<\/h3>\n

A single-stage ISBM machine consolidates two machine platforms’ worth of functionality into one integrated system, reducing factory floor space requirements by 40\u201360% compared to a full two-stage installation. For SME packaging businesses in the West Midlands, Yorkshire, or the North East, where factory floor space commands a premium, this compact footprint can be the deciding factor in investment feasibility when competing for new contract packaging business.<\/p>\n<\/div>\n

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\ud83d\udee1<\/div>\n

Pharmaceutical & Food-Grade Compliance<\/h3>\n

Single-stage ISBM machines designed for pharmaceutical and food-grade applications can be configured for Class D cleanroom compatibility, with stainless steel contact parts, filtered air supply systems, and validated cleaning protocols. Ever Power ISBM machines with FDA-compliant material contact surfaces are routinely deployed in MHRA-regulated pharmaceutical packaging facilities, including sites within the East Midlands pharmaceutical manufacturing corridor.<\/p>\n<\/div>\n

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\ud83d\udd04<\/div>\n

Fast Changeover & Multi-SKU Flexibility<\/h3>\n

Modern Ever Power single-stage ISBM machines incorporate quick-release mould clamping and standardised tooling interfaces enabling product changeover in under two hours by trained production teams. This operational agility makes single-stage ISBM the preferred choice for contract packaging operations, short-run premium products, and seasonal packaging lines where multiple SKU sizes and bottle designs must be accommodated on a single machine platform throughout the production calendar.<\/p>\n<\/div>\n<\/div>\n

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\"Ever<\/p>\n

Ever Power HGY250 \u2014 precision entry-level ISBM platform<\/p>\n<\/div>\n

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\"Ever<\/p>\n

HGY250 V4B variant \u2014 enhanced servo drive system<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Industry Applications<\/div>\n

Where Single-Stage ISBM Machines Deliver the Most Value<\/h2>\n

From pharmaceutical compliance to luxury cosmetics \u2014 the versatility of single-stage ISBM across key UK industrial sectors<\/p>\n<\/div>\n

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\ud83d\udc8a<\/div>\n

Pharmaceutical & Healthcare Packaging<\/h3>\n

Single-stage ISBM machines process PP and PETG into oral liquid bottles, syrup containers, eye-drop bottles, and diagnostic reagent vials. PP ISBM containers comply with EU\/UK Pharmacopoeia container standards and offer autoclave-compatible heat resistance. Key UK production hubs include pharmaceutical packaging facilities in Nottingham, Leicester, and Stoke-on-Trent operating under MHRA regulatory oversight.<\/p>\n<\/div>\n

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\ud83d\udc84<\/div>\n

Cosmetics & Personal Care<\/h3>\n

High-clarity PET and PETG containers from single-stage ISBM machines dominate premium cosmetic packaging for shampoos, conditioners, lotions, and serums supplied to major UK retailers. The absence of gate marks and superior optical transparency create standout shelf presence. London and Bristol cosmetic contract packaging facilities are substantial users of this technology for premium beauty brand programmes.<\/p>\n<\/div>\n

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\ud83c\udf6f<\/div>\n

Food & Condiments Packaging<\/h3>\n

Wide-mouth PP and PET ISBM jars serve honey, condiments, sauces, spreads, and powdered food manufacturers extensively across the UK. Wide-mouth geometries with 63mm or 89mm neck finishes are a particular strength of single-stage ISBM machines, which produce these forms with consistent wall thickness and superior top-load performance. Yorkshire-based food producers represent one of the most active regional procurement bases for this container type.<\/p>\n<\/div>\n

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\ud83d\udd27<\/div>\n

Industrial Chemicals & Lubricants<\/h3>\n

Solvent-resistant PETG and PC single-stage ISBM containers serve the automotive aftermarket, industrial maintenance, and agrochemical distribution sectors. Containers supplied to Sheffield’s tool, engineering, and industrial supply companies regularly require 1\u20135 litre square or rectangular profiles that only a single-stage ISBM machine can consistently produce at competitive unit cost with adequate chemical resistance.<\/p>\n<\/div>\n

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\ud83e\uddea<\/div>\n

Household & Cleaning Products<\/h3>\n

PET and PP containers from single-stage ISBM machines account for a significant share of UK household cleaning product packaging \u2014 including trigger-spray bottles, concentrate containers, and fabric softener vessels. Birmingham’s household goods manufacturing cluster represents a strong regional market, with contract manufacturers supplying major supermarket own-label programmes in this segment.<\/p>\n<\/div>\n

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\ud83e\uddea<\/div>\n

Laboratory & Diagnostic Containers<\/h3>\n

Optical clarity, dimensional precision, and chemical inertness make single-stage ISBM PET and PP containers highly suited to laboratory reagent bottles, sample collection vessels, and diagnostic kit packaging. The UK life sciences sector \u2014 with major clusters in Cambridge, Oxford, and Manchester \u2014 represents a growing procurement base for pharmaceutical-grade ISBM containers manufactured to validated process specifications.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Manufacturing Excellence<\/div>\n

Ever Power: Precision ISBM Manufacturing & Custom Engineering for UK Operations<\/h2>\n

Ever Power has established itself as one of the most technically capable and commercially dependable ISBM machine manufacturers supplying the global packaging industry. Our manufacturing facility operates a vertically integrated production model \u2014 from raw steel procurement and precision CNC machining through to electrical assembly, Siemens PLC software integration, and pre-shipment full-load testing \u2014 ensuring that every single-stage ISBM machine leaving our factory meets the exact specifications agreed with each individual customer. This end-to-end manufacturing control is uncommon in the ISBM equipment sector and is a primary reason why packaging engineers across the UK, from Birmingham to Edinburgh, specify Ever Power machines when quality and reliability are non-negotiable business requirements on a long-term capital asset.<\/p>\n

\"Ever<\/p>\n

Our customisation capabilities extend across every aspect of the machine platform. UK customers routinely request modifications including UKCA-compliant electrical systems, CE-marked safety guarding designed to BS EN ISO 12100, IP65-rated control panels for humid production environments, and application-specific mould configurations covering PCO 1881 neck finishes, wide-mouth pharmaceutical closure systems, and complex asymmetric bottle geometries. Ever Power’s applications engineering team works directly with customers’ packaging development and process engineering staff to validate the machine configuration against production requirements before any order is committed \u2014 a collaborative approach that eliminates specification mismatches and reduces commissioning time on site.<\/p>\n

Our supply chain management programme guarantees consistent lead times and spare parts availability that UK production operations depend upon. We maintain a UK-held spare parts inventory covering all critical wear components \u2014 including hot runner nozzles, stretch rods, blow mould inserts, and hydraulic seals \u2014 enabling same-day dispatch on urgent maintenance requirements. Our field service team provides installation commissioning, operator training, and scheduled preventive maintenance programmes tailored to UK production environments, ensuring your ISBM machine investment delivers maximum uptime throughout its operational life.<\/p>\n

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Ready to Discuss Your ISBM Requirements?<\/h3>\n

Our applications engineers provide a complimentary process feasibility assessment and customised machine specification \u2014 no obligation, just expert guidance aligned to your production needs.<\/p>\n

\ud83d\udce9 Get a Quote from Ever Power<\/a><\/p>\n

Email: sales@isbm-equipment.com<\/a> \u00b7 Response within 24 hours<\/p>\n<\/div>\n<\/div>\n

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Ever Power precision ISBM manufacturing facility<\/p>\n

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Why UK Buyers Choose Ever Power<\/h3>\n
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\u2714<\/span>UKCA & CE marked machines as standard<\/span><\/div>\n
\u2714<\/span>UK-stocked spare parts \u2014 same-day dispatch<\/span><\/div>\n
\u2714<\/span>Bespoke mould tooling design service<\/span><\/div>\n
\u2714<\/span>On-site installation & commissioning team<\/span><\/div>\n
\u2714<\/span>PET, PP, PC, PETG multi-resin capability<\/span><\/div>\n
\u2714<\/span>Pharmaceutical-grade cleanroom configurations<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Customer Success Story: Sheffield Specialty Packaging Ltd.<\/h2>\n

Single-stage ISBM investment transforms pharmaceutical container production in South Yorkshire<\/p>\n<\/div>\n

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Location<\/div>\n
Sheffield, UK<\/div>\n<\/div>\n
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Sector<\/div>\n
Pharmaceutical Packaging<\/div>\n<\/div>\n
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Machine<\/div>\n
Ever Power EP-4<\/div>\n<\/div>\n
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Payback<\/div>\n
18 Months<\/div>\n<\/div>\n<\/div>\n

The Challenge<\/h3>\n

Sheffield Specialty Packaging Ltd. \u2014 a family-owned contract packaging business with 22 years of experience serving Yorkshire’s healthcare and pharmaceutical distribution supply chains \u2014 faced a production quality crisis in 2024. Their existing extrusion blow moulding equipment was producing PP oral liquid containers with inconsistent wall thickness, unacceptable haze levels that failed MHRA supplier qualification audits, and gate mark defects that major NHS supply-chain customers were flagging during incoming goods inspection. The company needed to upgrade to a process capable of consistently delivering pharmaceutical-grade optical clarity and dimensional repeatability across their 60ml, 100ml, and 250ml PP bottle range. Their technical director had evaluated several ISBM equipment<\/a> suppliers but was specifically concerned about finding a machine partner who thoroughly understood the PP processing constraints that are well outside the capability of standard reheat blow systems.<\/p>\n

\"ISBM<\/p>\n

The Ever Power Solution<\/h3>\n

Ever Power’s applications engineering team conducted a full process feasibility study based on Sheffield Specialty Packaging’s bottle drawings, polymer specification data sheets, and annual volume projections. The recommended solution was an EP-4 single-stage ISBM machine configured specifically for random copolymer PP processing, incorporating a four-zone temperature profiling conditioning station to ensure uniform preform temperature distribution across the complex 60mm shoulder geometry of the 250ml bottle. Bespoke mould tooling was designed and manufactured by Ever Power’s in-house toolroom to match Sheffield Specialty Packaging’s existing neck finish dimensions, eliminating any need for costly closure procurement changes. The machine was delivered to the Sheffield facility and commissioned by Ever Power’s field engineering team in four working days, with full operator training delivered in-parallel during commissioning. A process validation documentation package was provided concurrently, directly supporting Sheffield Specialty Packaging’s submission to their pharmaceutical customer qualification programme.<\/p>\n

The Results<\/h3>\n
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93%<\/div>\n
Reduction in haze<\/div>\n<\/div>\n
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0<\/div>\n
Qualification failures post-install<\/div>\n<\/div>\n
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28%<\/div>\n
Energy cost per unit saving<\/div>\n<\/div>\n
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18 mo<\/div>\n
Investment payback achieved<\/div>\n<\/div>\n<\/div>\n

Sheffield Specialty Packaging passed their NHS supply chain pharmaceutical packaging qualification audit within three months of commissioning the Ever Power EP-4, unlocking a new annual contract worth approximately \u00a3380,000 in container supply revenue. The single-stage ISBM machine’s ability to hold \u00b10.15mm dimensional tolerance consistently across all three bottle sizes eliminated the incoming goods rejection events that had previously damaged the company’s customer relationship. The investment payback period of 18 months was achieved six months ahead of the original business case projection \u2014 driven by the combination of energy savings, scrap rate reduction, and new contracted revenue from the NHS supply programme.<\/p>\n

\"ISBM<\/p>\n<\/div>\n

What Our UK Customers Say About Ever Power ISBM Machines<\/h3>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We’ve been running the Ever Power EP-4 single-stage ISBM machine for 14 months on PP pharmaceutical bottles and the consistency is simply outstanding. The four-zone conditioning station gives us a temperature profile across the preform wall that no two-stage system we trialled could match for our 250ml PP container geometry. Our qualification audit results speak for themselves \u2014 three consecutive passes with zero dimensional non-conformances.”<\/p>\n

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David Hartley<\/div>\n
Technical Director, Sheffield Specialty Packaging Ltd., South Yorkshire<\/div>\n<\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“As a cosmetics contract packager in Birmingham, optical clarity is everything our luxury clients are paying for. The PETG containers coming off our Ever Power single-stage ISBM machine have a crystal-clear finish that our premium skincare brand customers now specify by name when placing orders. We’ve also been genuinely impressed by Ever Power’s UK spare parts despatch speed \u2014 next-day delivery on the stretch rod assembly kept us from a costly unplanned line shutdown.”<\/p>\n

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Sarah Moorfield<\/div>\n
Operations Manager, Apex Cosmetic Packaging Ltd., Birmingham, West Midlands<\/div>\n<\/div>\n<\/div>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“We supply wide-mouth PP ISBM jars to Yorkshire food manufacturers and the Ever Power EP-2 has been running 18-hour shifts without issue since commissioning over a year ago. The bespoke 89mm neck-finish tooling that Ever Power designed for our honey jar range is a perfect fit, and the wall thickness consistency we achieve on wide-mouth jars simply cannot be replicated on two-stage equipment for this container geometry at this price point.”<\/p>\n

\n
James Weston<\/div>\n
Production Director, Northern Container Solutions, Leeds, West Yorkshire<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Frequently Asked Questions<\/div>\n

Your ISBM Machine Questions \u2014 Answered Directly<\/h2>\n<\/div>\n
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What is the typical price or cost range for a single-stage ISBM machine suitable for a small UK packaging manufacturer just starting out?<\/h3>\n<\/div>\n
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The cost of a single-stage ISBM machine varies substantially depending on cavity count, container size range, polymer type, and customisation level. Entry-level single-cavity EP-1 machines for small UK packaging operations typically start from around \u00a345,000\u2013\u00a370,000 (ex-works), while four-cavity EP-4 platforms with pharmaceutical-grade configurations can reach \u00a3180,000\u2013\u00a3280,000. Ever Power provides tailored quotations based on your specific application data. Contact our team at sales@isbm-equipment.com<\/a> for a detailed price breakdown with no obligation.<\/p>\n<\/div>\n<\/div>\n

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How does the single-stage ISBM process work differently from two-stage when producing pharmaceutical PP bottles in the UK?<\/h3>\n<\/div>\n
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In a single-stage ISBM machine, the PP preform is injected and then immediately conditioned and blown while retaining residual heat from the injection stage \u2014 there is never any external reheating. This is critical for PP pharmaceutical bottles because PP has a narrow processing window; reheating PP preforms in a two-stage system invariably causes uneven crystallisation and haze that fails MHRA pharmaceutical packaging audits. Single-stage processing maintains the PP material within its ideal orientation temperature range of 150\u2013165\u00b0C, delivering the consistent clarity and dimensional accuracy that pharmaceutical qualification programmes demand.<\/p>\n<\/div>\n<\/div>\n

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Which type of ISBM machine should I choose if I’m a contract packaging supplier in Birmingham producing wide-mouth jars and cosmetic bottles across multiple SKUs?<\/h3>\n<\/div>\n
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For a Birmingham-based contract packaging supplier producing wide-mouth jars and cosmetic bottles across multiple SKUs, a single-stage ISBM machine is almost certainly the right choice. Wide-mouth jar geometries and non-cylindrical cosmetic bottle profiles require the precise temperature control and neck-finish integrity that only single-stage ISBM technology reliably delivers. The ability to process PETG and PP alongside standard PET on a single platform also provides the SKU flexibility that contract packaging businesses need to serve diverse customer portfolios without committing capital to multiple specialised machines.<\/p>\n<\/div>\n<\/div>\n

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Where can I get a reliable supplier quote for an ISBM machine with UK delivery and installation covering Sheffield or the wider Yorkshire and Humber manufacturing region?<\/h3>\n<\/div>\n
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Ever Power provides ISBM machine quotations with UK mainland delivery, professional installation, and on-site commissioning covering Sheffield, Leeds, Bradford, Barnsley, Doncaster, and all surrounding Yorkshire and Humber manufacturing areas. Our field engineering team completes installation and commissioning within 3\u20135 working days, with operator training included as standard. To receive a personalised quote that includes UK delivery logistics, installation timeline, and warranty terms, contact our sales team directly at sales@isbm-equipment.com<\/a>.<\/p>\n<\/div>\n<\/div>\n

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How much energy does a single-stage ISBM machine use compared to a two-stage system, and what does that mean for my UK electricity bill each year?<\/h3>\n<\/div>\n
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A single-stage ISBM machine typically consumes 20\u201335% less energy per container produced than a comparable two-stage system, because no separate preform reheat energy is incurred. For an EP-2 machine running 20 hours per day at UK commercial electricity rates of approximately 28\u201332p\/kWh, this energy saving translates to between \u00a38,000 and \u00a314,000 per year in reduced electricity cost \u2014 a meaningful contribution to per-unit cost reduction and a measurable improvement in the facility’s carbon-per-tonne production metric, which is increasingly scrutinised under UK industrial sustainability reporting frameworks and FMCG supply chain ESG audits.<\/p>\n<\/div>\n<\/div>\n

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When does it make more financial sense to invest in a two-stage ISBM system rather than single-stage for a UK high-volume PET bottle production operation?<\/h3>\n<\/div>\n
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The financial case for two-stage ISBM over single-stage typically becomes compelling when annual production volumes exceed 25\u201330 million identical PET containers, when the product mix is dominated by standard round beverage or water bottles, and when external preform procurement is commercially viable. At those volumes, the superior output rates of two-stage equipment \u2014 potentially 30,000 to 50,000 bottles per hour on high-cavity machines \u2014 generate operating economies that can outweigh the higher capital and energy investment. For UK operations at lower volumes or with diverse container portfolios, single-stage ISBM almost always presents the stronger overall business case.<\/p>\n<\/div>\n<\/div>\n

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Who are the most reliable ISBM machine suppliers offering customised solutions for the UK food and pharmaceutical packaging industry with proven site references?<\/h3>\n<\/div>\n
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For UK food and pharmaceutical packaging applications requiring truly customised ISBM solutions \u2014 including PP pharmaceutical processing, MHRA-compatible configurations, or bespoke container geometry tooling \u2014 Ever Power stands out through its vertically integrated manufacturing, in-house mould tooling design capability, and a dedicated UK-based technical support and spare parts service. Our documented track record with pharmaceutical packaging operations in Sheffield, Nottingham, and the East Midlands corridor provides verifiable evidence of our capability in the most demanding UK regulatory packaging environments.<\/p>\n<\/div>\n<\/div>\n

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What materials other than PET can be processed on an Ever Power single-stage ISBM machine, and how does multi-resin capability affect the machine quote price?<\/h3>\n<\/div>\n
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Ever Power single-stage ISBM machines can be configured to process PET, PP, PETG, PC, PLA, and emerging bio-based polyesters. Multi-material capability requires application-specific engineering adaptations in the hot runner nozzle geometry, conditioning station heater configuration, and stretch rod material selection \u2014 each of which affects the final machine cost. A PP-configured single-stage ISBM machine typically carries a 12\u201318% premium over a standard PET-only build. Exact pricing for multi-material configurations is available on request from Ever Power’s sales team at sales@isbm-equipment.com<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Ready to Choose the Right ISBM Process for Your Business?<\/h2>\n

Ever Power’s applications engineers can provide a no-obligation process recommendation and machine specification tailored to your production requirements, container portfolio, and budget \u2014 covering the full UK mainland from Cornwall to the Scottish Highlands.<\/p>\n

\ud83d\udce9 Request Your Free Quote Now<\/a><\/p>\n

sales@isbm-equipment.com<\/a> \u00b7 24-hour response guarantee \u00b7 UK-wide service coverage<\/p>\n

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\u00a9 Ever Power Equipment \u00b7 ISBM Machine Specialists \u00b7 edit by gzl<\/p>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

ISBM Technology Guide \u00b7 Ever Power Equipment Single-Stage vs. Two-Stage ISBM: Which Process Is Right for Your Business? A definitive technical guide for UK packaging manufacturers, procurement engineers, and operations directors evaluating ISBM machine investment decisions. \u23f1 15 min read \ud83c\udfed UK Manufacturing Focus \ud83d\udd2c Technical Deep Dive The global demand for lightweight, high-clarity plastic […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[20],"tags":[],"class_list":["post-505","post","type-post","status-publish","format-standard","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/isbm-equipment.com\/kk\/wp-json\/wp\/v2\/posts\/505","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/isbm-equipment.com\/kk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/isbm-equipment.com\/kk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/isbm-equipment.com\/kk\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/isbm-equipment.com\/kk\/wp-json\/wp\/v2\/comments?post=505"}],"version-history":[{"count":5,"href":"https:\/\/isbm-equipment.com\/kk\/wp-json\/wp\/v2\/posts\/505\/revisions"}],"predecessor-version":[{"id":579,"href":"https:\/\/isbm-equipment.com\/kk\/wp-json\/wp\/v2\/posts\/505\/revisions\/579"}],"wp:attachment":[{"href":"https:\/\/isbm-equipment.com\/kk\/wp-json\/wp\/v2\/media?parent=505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/isbm-equipment.com\/kk\/wp-json\/wp\/v2\/categories?post=505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/isbm-equipment.com\/kk\/wp-json\/wp\/v2\/tags?post=505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}