맞춤형 원스텝 사출 스트레치 블로우 금형(ISBM)

제품 개요

The difference between a mediocre and an excellent bottle production line is almost always the tooling. The machine supplies the clamping force, the heat, and the air pressure — but the shape, clarity, wall thickness, and neck thread accuracy of every bottle you ship comes from the mould. Ever-Power designs and manufactures custom one-step injection stretch blow moulds for Korean and East Asian packaging factories that have outgrown off-the-shelf tooling and need dimensionally precise, machine-matched moulds that drop directly onto their existing ISBM platforms without adapter plates, no re-machining of locating bushings, and no trial-and-error commissioning.

Every injection stretch blow mould we ship is built in-house at our 30,000 square meter Guangdong tool shop, on German 5-axis CNC machining centers and Sodick precision EDM wire-cutters. We hold steel inventory in seven standard mould-base grades — S136, H13, 718H, 2316, P20, NAK80, and Aluminum 7075 — so we can start pre-machining within 48 hours of design sign-off. The full cycle from approved CAD to validated mould typically runs 35 to 55 working days depending on cavity count and geometric complexity, which is roughly 40 percent faster than the Japanese OEM equivalent and 60 percent faster than European moulds. Every finished mould undergoes a trial-molding validation run on our in-house ISBM machine with your specified resin before it leaves the factory.

Machine compatibility is the single question Korean buyers ask most often. We build custom moulds that drop directly onto all common ISBM platforms including Japanese ASB-12M, ASB-50MB, ASB-70DPH, ASB-70DPW, Nissei ASB, AOKI 250, AOKI 350, as well as Ever-Power's own HGY and BPET machine families. When you upgrade from an aging Japanese machine to a new Korean-accessible Ever-Power platform, the investment you have in existing moulds does not need to be written off — we verify dimensional compatibility from your legacy tooling drawings and, if needed, build platen adapter plates at cost. For greenfield projects where you bring only the finished-bottle drawing, our engineering team runs stretch-ratio simulation, preform weight optimization, and cavitation planning before cutting any steel.

Cavity count capability ranges from single-cavity 5 L bulk water gallon moulds up to 28-cavity micro-dropper tooling for pharmaceutical applications, limited only by the physical platen dimensions of your receiving machine. Typical Korean cosmetic and pharma applications sit in the 4 to 12 cavity range, while high-volume beverage and household chemical plants often run 8 to 16 cavity tooling. Wall thickness holds within 0.05 mm variance across cavity sets, neck thread tolerance stays within 0.02 mm on critical dimensions, and surface finish reaches SPI A-1 (Ra 0.05) mirror polish on cavities where glass-like clarity is required for premium PETG and PCTG cosmetic packaging.

Mould Components Anatomy — The Four Critical Assemblies

A complete one-step ISBM mould set comprises four distinct assemblies, each machined from different steel grades for different mechanical requirements. Understanding how these assemblies work together is the first step in specifying the right mould for your application.

1. Preform Injection Cavity

This is where molten resin is injection-moulded around the core rod to form the preform — the test-tube-shaped intermediate that will become the final bottle. The cavity defines the preform body profile, wall thickness, and neck finish geometry. Because the neck finish is fully formed at this stage and never reshaped later, this is the single most critical mould component for thread tolerance and capping reliability. We machine preform cavities from S136 stainless steel vacuum-quenched to HRC 48-52, polished to Ra 0.05 on clarity-critical surfaces. For heavy-duty PET and rPET applications exceeding 3 million shots annually, we upgrade to H13 tool steel at HRC 52-54 for extended wear life.

2. Core Rod Assembly (Mandrel)

The core rod carries the hot preform from the injection station through the subsequent stretch-blow stations, and it also forms the interior of the preform during injection. Dimensional precision here is absolute: any deviation on the core rod diameter translates directly into bottle wall thickness variance. We manufacture core rods from 718H pre-hardened tool steel (HRC 30-35) for most applications, stepping up to Cr12MoV cold-work steel at HRC 58-60 for aggressive high-cycle production. Internal cooling channels inside each core rod are deep-hole-drilled on a Mori Seiki BTA machine to maintain straightness within 0.03 mm over the full length.

3. Blow Cavity Mould

The blow cavity defines the final external bottle shape — body profile, base geometry, label panel, grip contours. It opens and closes on every cycle to release the finished bottle, so mating surface precision determines whether flashing appears at parting lines. We machine blow cavities from either S136 stainless (for long-life production) or Aluminum 7075-T6 (for short-run or rapidly-changing cosmetic geometries where weight reduction matters for the machine's servo indexing system). Conformal cooling channels wrap around complex bottle contours to extract heat 15 to 20 percent faster than straight-drilled lines, directly reducing cycle time.

4. Hot Runner Manifold System

The hot runner system distributes molten resin from the machine's plasticizing screw to each cavity in a multi-cavity mould. In single-cavity moulds this is a simpler nozzle, but in 12-cavity or 24-cavity tooling the manifold becomes the single largest determinant of fill balance and bottle-to-bottle consistency. We use a standard S45C mounting base in dimensions matched to the customer's machine — for example, one 15 ml dropper bottle mould we recently built for a Korean pharmaceutical client used a 430 × 140 × 30 mm hot runner base with 4 through-bore mounting holes of Ø14 mm, dimensioned for direct drop-onto an ASB-12M platen. The manifold itself integrates Yudo or Hasco-equivalent hot runner nozzles with PID-controlled heating and chrome-plated internal flow paths to prevent resin degradation at the mould's idle zones.

Mould Steel Materials — Picking the Right Grade

Mould steel selection is the single biggest factor in long-term production economics. A premium steel costs 30 to 50 percent more upfront but lasts 3 to 5 times longer in production, reducing total cost of ownership substantially. We keep the following seven grades in inventory for Korean customer orders, with steel grade specified per-component based on your annual production volume and resin characteristics.

A well-specified mould set typically mixes four to five steel grades across different components — S136 for the clarity-critical preform cavity, H13 for the blow cavity on long-cycle production, 718H for core rods, P20 for the base plates, and S45C for the hot runner mounting base. Our engineering team recommends the optimal combination for your specific bottle drawing and annual volume after reviewing your resin specification and target production schedule.

Machine Compatibility Matrix

Every 맞춤형 ISBM 금형 we build is dimensioned for a specific receiving machine. Below is the compatibility matrix covering the Japanese, European, and Korean platforms most commonly encountered in East Asian packaging factories. If your machine is not listed, send us the platen drawings and we will verify tie-bar spacing, core-rod pitch, and nozzle interface before quoting.

Cavity Count Range & Typical Bottle Specifications

Cavitation is a joint decision between the mould designer, the machine specifications, and the customer's annual production volume. The table below summarizes the practical envelope we typically deliver, though custom configurations outside these ranges are feasible with specialized machine platforms.

6-Step Custom Manufacturing Workflow

From the day your bottle design is signed off, the full custom injection stretch blow mould manufacturing cycle runs 35 to 55 working days depending on cavity count and geometric complexity. The six-step workflow below is what every project goes through, with documented sign-off checkpoints between each phase.

Step 1 — Design Review & Feasibility Analysis (2 – 5 Days)

You send us a 3D STEP file or physical bottle sample, plus target annual volume, resin specification, and receiving machine model. Our engineering team reviews the geometry for stretch-blow feasibility, flags any unusual design features (sharp corners, extreme aspect ratios, thin wall sections), and recommends the optimal cavity count for your volume target. A written feasibility report with preform-weight calculation returns within 3 working days.

Step 2 — 3D CAD Modeling & Flow Simulation (3 – 7 Days)

With the feasibility sign-off, our CAD team builds the full 3D mould model including preform cavity, core rod profile, blow cavity, hot runner manifold, and cooling channel layout. Moldflow and stretch-ratio simulation identify potential wall-thickness issues before any steel is cut. You receive the 3D model for design approval, typically with one round of revisions before proceeding.

Step 3 — Steel Procurement & Pre-Machining (5 – 10 Days)

We hold inventory of S136, H13, 718H, P20, NAK80, and S45C in common block sizes, so pre-machining starts within 48 hours of CAD approval. Rough machining removes 90 percent of material on 5-axis CNC centers with automated tool changers, after which the blanks move to deep-hole drilling for cooling channels. For premium S136 and H13 grades on critical cavity components, vacuum quenching follows to reach the target hardness.

Step 4 — Precision 5-Axis CNC Machining & EDM (15 – 20 Days)

Finish machining on German DMG Mori 5-axis centers brings dimensional tolerances within ±0.01 mm on critical neck and gate geometries. Sodick wire-cut EDM handles the fine features that milling cannot reach, including ejector holes, vent slots, and radius details. Every CNC-finished component passes through our Zeiss CMM measurement station for dimensional verification before moving to the polishing cell.

Step 5 — Polishing & Heat Treatment (7 – 10 Days)

Clarity-critical surfaces on preform cavities and blow cavities undergo manual diamond-paste polishing to reach SPI A-1 (Ra 0.05) optical mirror finish. This step cannot be automated — it depends on trained hand-polishers who spend 8 to 20 hours per cavity depending on complexity. Non-critical surfaces receive SPI B-2 or B-3 finish. Final heat treatment stabilizes dimensional accuracy before assembly.

Step 6 — Trial Molding & Validation (3 – 5 Days)

Before shipment, every mould runs a trial-molding validation on our in-house ISBM machine using your specified resin and target preform weight. First-article bottles go through dimensional CMM inspection, wall-thickness profiling, and optical clarity assessment. The validation report — including sample bottles, measurement data, and cycle-time verification — ships with the mould to your factory for final acceptance.

Applications by Industry

Over the past three years, Korean and East Asian customer orders have clustered into five industry verticals, each with distinct technical priorities. Below is how we approach the custom bottle mould specification differently for each sector.

K뷰티 및 프리미엄 화장품 포장

Korean cosmetic brands demand glass-clarity surface finish on PETG and PCTG serum bottles, cream jars, and toner flacons. For this sector we specify S136 stainless cavities polished to Ra 0.05 on all clarity-critical surfaces, with special attention to neck-thread precision for automated capping line compatibility. Short-run K-beauty product launches (20,000 to 100,000 units per campaign) are typical, so we optimize changeover-friendliness with quick-release clamps on the preform mould. Typical configurations are 4 to 8 cavity on bottles between 30 ml and 200 ml.

  

Pharmaceutical Eye-Drop & Syrup Vials

Pharmaceutical packaging requires absolute dimensional precision for tamper-evident sealing and child-proof closures. Neck-thread tolerance is held within 0.02 mm using Zeiss CMM verification on every cavity before shipment. For GMP cleanroom-compatible production, we specify 2316 corrosion-resistant stainless steel for any components that contact wash-down solutions. Typical Korean pharma projects run 8 to 16 cavity on 5 ml to 120 ml vials, and the example 15 ml 12M 1×6 dropper bottle mould we recently built for a Daejeon pharmaceutical client is a representative specimen of this category.

Beverage & Mineral Water Bottles

High-volume beverage production (1 million+ bottles per year per SKU) demands long-life tooling with robust wear resistance. Here we specify H13 tool steel at HRC 52-54 for preform cavities and blow cavities, with deep-hole-drilled conformal cooling channels to minimize cycle time. For recycled PET (rPET) processing, chrome-plated internal surfaces on the hot runner manifold protect against abrasive contaminants. Typical configurations are 4 to 8 cavity on bottles between 500 ml and 2 L.

Wide-Mouth Food Jars & Kimchi Containers

Korean kimchi, gochujang, honey, and sauce jars with neck diameters up to 148 mm present a structurally different tooling challenge. The projected mould area is 3 to 5 times larger than standard cosmetic bottles, which means the blow clamping force must hold correspondingly. We build P20 mould bases thick enough to resist deflection under 300+ KN blow clamping, and we specify oversized parting-line gaps with fine-tuned venting to prevent flashing. Typical configurations are 1 to 2 cavity on jars between 500 ml and 3 L.

BPA-Free Baby Bottles & Infant Care Packaging

Tritan, PCTG, and PPSU baby bottle production demands thermally stable hot runner systems because these resins process within narrow temperature windows (typically 260 to 340 Celsius depending on grade). We specify Yudo-equivalent hot runner nozzles with individual PID control per cavity, chrome-plated flow paths to eliminate dead zones, and nickel-alloy barrel liners for PPSU applications exceeding 310 Celsius. Typical configurations are 4 to 8 cavity on bottles between 150 ml and 330 ml.

Quality Control & Pre-Shipment Testing

Every injection stretch blow mould leaves our factory only after passing four dimensional and functional verification steps. The written QC report ships with the mould to your factory, and all data is retained in our QMS for warranty traceability.

• CMM Dimensional Verification — Zeiss 3D coordinate measuring machine inspects critical dimensions (neck thread diameter, wall thickness distribution, cavity depth, parting line mating surfaces) to ±0.01 mm accuracy. Every cavity in a multi-cavity mould is measured individually, not by sampling.
• Water-Leak Pressure Test — Conformal cooling channels are pressurized to 1.0 MPa for 15 minutes with the assembled mould submerged in a witness tank. Any bubble formation indicates a leak that must be corrected before the next step.
• Optical Surface Inspection — Polished cavities are inspected under 50x stereo microscope for any micro-scratches, polishing residue, or EDM recast layer issues. The Ra surface roughness is verified with a contact-probe profilometer at three locations per cavity.
• Trial Molding Validation — The complete mould is mounted on our in-house ISBM machine and runs a 500-bottle trial with the customer's specified resin. First-article bottles are inspected for wall thickness, neck thread tolerance, surface clarity, and dimensional stability. Only after this validation passes does the mould ship.
• Packaging & Anti-Rust Preparation — Before crating, every polished surface receives a long-term anti-rust oil coating, and the mould is wrapped in VCI (volatile corrosion inhibitor) paper. Crating uses 18 mm plywood on heat-treated pallets with impact-indicating shock sensors for transit monitoring.

Selection Guide — What to Send Us for a Quote

A well-scoped mould inquiry can be quoted in 2 to 3 working days. An incomplete inquiry usually bounces back with clarifying questions, extending the quotation cycle by a week or more. Please provide the following before requesting a quote.

• Bottle 3D file — STEP, IGES, or native CAD format. If you only have 2D drawings, that works but slows the feasibility review.
• Target finished-bottle weight — grams per bottle, plus any lightweighting target vs current packaging.
• Neck finish standard — for example PCO 1881, 28-400, 24-410, or a custom closure style. Specify thread pitch and any tamper-evident ring requirements.
• Annual production volume — drives cavity-count recommendation and steel grade selection.
• Resin grade — PET IV value, PETG grade, PC or Tritan specification, supplier name if known. For rPET, include the recycled content percentage and flake source.
• Receiving ISBM machine model — Japanese ASB, AOKI, Ever-Power, or other. Send platen drawings if available; we can reverse-engineer from a photograph of the mould area if drawings are unavailable.
• Cavity count preference — if you have one. If not, we recommend based on annual volume and machine capability.
• Steel grade preference — if you have a specific preference. If not, we recommend based on production volume and resin type.
• Target delivery date — so we can confirm whether 35, 45, or 55 working days meets your schedule.

Why Choose Ever-Power for ISBM Mould Manufacturing

There are plenty of general mould shops in China that will quote an ISBM tooling project, and a few Japanese and European specialists who will deliver exceptional quality at premium prices. Ever-Power sits in a specific position: dedicated ISBM tooling depth, Korean-accessible lead time, and Japanese-equivalent dimensional precision at roughly half the cost.

• Dedicated ISBM tool shop — our mould engineering team works only on injection stretch blow tooling, not on general plastic-injection moulds. This specialist focus shows up in the details: preform taper angles, blow cavity venting patterns, hot runner gate geometry for PET vs PETG vs Tritan.
• German 5-axis CNC infrastructure — DMG Mori 5-axis machining centers, Sodick wire-cut EDM, Zeiss CMM measurement. The capital investment in precision equipment is what enables ±0.01 mm tolerance without premium markup.
• In-house ISBM machine for validation — every mould runs a trial-molding validation on an actual ISBM machine before shipment. Most mould shops ship untested tooling; we refuse to do that because the cost of fixing issues after delivery is 10 times the cost of catching them in our factory.
• Machine-and-mould single-source accountability — when you buy both the ISBM machine and the tooling from Ever-Power, there is no finger-pointing during commissioning. If something does not fit, it is our problem to solve.
• Korean-language project engineering — bilingual project managers walk through design reviews and technical clarifications in Korean. Communication clarity during the first 4 weeks of a mould project is the single biggest predictor of schedule success.
• 500+ moulds delivered since 2020 — to Korean, Japanese, Vietnamese, Thai, and Indonesian customers. Reference visits available to Korean prospects on request.
• 35 to 55 working day lead time — roughly 40 percent faster than the Japanese OEM equivalent for comparable cavity count and complexity.

자주 묻는 질문

Customer Reviews & Field Feedback

Related Products & Matching Components

A 맞춤형 ISBM 금형 reaches its rated performance only when installed on a correctly sized machine with matched auxiliaries. The components below are what we typically specify alongside every tooling order, each available through Ever-Power or our verified partner network.

• Matched ISBM machine platforms — the full Ever-Power machine range covers production from pilot R&D through bulk jumbo water gallons. The 4 스테이션 ISBM 장비 family handles most Korean cosmetic and pharmaceutical applications, while the 3 Station ISBM Machine line suits high-volume short-cycle beverage and household chemical production.
• Oil-free screw air compressor sized for your mould's blow air requirement, typically 3.5 MPa at 2 to 5 cubic meters per minute depending on bottle size and cavity count. Class 0 oil-free certification is mandatory for food-contact and pharmaceutical applications. Matched units available through our oil-free compressor partner.
• Chiller and cooling tower pair delivering 12 Celsius chilled water to the mould's conformal cooling channels at the specified pressure and flow rate. Correctly sized chilling is often the difference between the mould hitting its rated cycle time or running 10 to 15 percent slower in real production.
• 금형 온도 조절기 — one unit for the preform mould (typical setpoint 15 to 25 Celsius for PET) and one for the blow cavity (10 to 18 Celsius for PET, up to 95 Celsius for PC). Two-zone units handle thick-wall PCTG and PPSU without localized hot spots.
• Precision transmission components — for the machine's turntable indexing drive and clamping mechanism. Hardened alloy steel shafts and heavy-duty bearings are available through our precision drive shaft partner for sites needing fast local replenishment.
• Desiccant resin dryer with integrated dew-point monitoring. Critical for PET, PC, and PPSU processing where even 0.05 percent moisture excess causes hydrolysis-driven silver streaks in the finished bottle.
• Robot takeout conveyor and vision inspection — for high-value pharmaceutical and cosmetic runs where zero-defect delivery to filling is expected. Vision systems tag any out-of-tolerance bottles before they reach downstream packaging.