One-Step ISBM Machine Series
Industry-leading injection stretch blow molding machines that transform raw resin into finished bottles in a single,
continuous process — no reheating, no contamination, maximum efficiency.
Choose Your ISBM-Maschine Configuration
From compact 3-station setups to high-output 6-station lines — every configuration
leverages one-step hot-preform technology for superior bottle quality and lower operating costs.
Three Station Blow Molding Machine
Compact all-servo ISBM for precision production
The 3-station one-step ISBM machine dedicates each station to injection, stretch-conditioning, and blow molding. The all-servo drive system (Inovance/MiRLE) delivers repeatable, energy-efficient cycles with minimal operator intervention.
4-Station One-Step ISBM Machine
The industry standard for high-output PET bottle lines
The 4-station one-step ISBM machine adds a dedicated temperature-conditioning and pre-blowing station between injection and stretch blow molding. This yields more uniform preform temperature profiles, enabling higher production speeds and improved optical clarity.
Sechs-Stationen-Blasformmaschine
Maximum throughput for industrial-scale production
The 6-station one-step ISBM machine is engineered for large-format or high-cavity bottle lines demanding maximum output. Additional conditioning and cooling stations extend the thermal processing window, enabling complex bottle geometries and thicker base sections.
The One-Step ISBM Process
Unlike two-step reheat systems, one-step ISBM machines carry preforms through
every stage while still hot — eliminating reheating energy, contamination risk, and
inter-process handling.
Injection Molding
Resin pellets are plasticized and injected into precision preform molds. Screw diameter 45-60 mm, L/D ratio 24:1.
Conditioning & Pre-Blow
Preform temperature is equalized; gate tails are trimmed and a controlled pre-blow begins shaping the parison.
Stretch Blow Molding
A stretch rod extends axially while high-pressure air (up to 3.5 MPa) biaxially orients the polymer for maximum clarity and strength.
Ejection & Take-Out
Finished bottles are released and removed by an integrated mechanical arm — ready for filling, labeling, or packing.
Industries Served by One-Step ISBM
Our ISBM machines produce bottles and containers across a wide range of sectors —
wherever clarity, hygiene, and dimensional consistency matter.
One-Step vs Two-Step ISBM Technology
Understanding the key differences helps you select the right production method for
your volume, quality requirements, and operational goals.
| COMPARISON FACTOR | ONE-STEP ISBM (HOT PREFORM) | TWO-STEP REHEAT BLOW (COLD PREFORM) |
|---|---|---|
| Equipment Required | 1 machine — full process integrated | Injection machine + reheat blow machine (2 separate) |
| Preform Reheating | ✓ Not required — retains molding heat | ✗ Required — full reheat cycle adds energy & time |
| Contamination Risk | ✓ Very low — no preform storage or transport | ✗ Higher — preforms exposed during storage & feeding |
| Moisture Absorption | ✓ Minimal — preform used while hot | ✗ Risk — stored preforms can absorb moisture |
| Bottle Shape Flexibility | ✓ High — varied geometry, wide-neck, handled | Moderate — standard bottle shapes best suited |
| Scrap / Defect Rate | ✓ Lower — fewer process variables | Slightly higher due to reheat inconsistency |
| Energy Consumption | ✓ Lower — no secondary heating | Higher — two full heating cycles required |
| Footprint & CapEx | ✓ Smaller — single machine, compact layout | Larger footprint, higher initial investment |
| Best Suited For | Small-to-mid volume, specialty shapes, premium quality | Very high volume, single standard bottle format |
Compatible Resins & Polymers
Our one-step ISBM machines are validated with the following polymer families —
enabling a broad application portfolio from food-grade packaging to industrial containers.
PET
Polyethylene Terephthalate
PrimaryPETG
Glycol-Modified PET
PrimaryPETE
PET Ethylene Copolymer
PrimaryPP
High-Transparency Polypropylene
StandardPC
Polycarbonate
StandardPMMA
Acrylic (Plexiglas)
StandardSAN
Styrene Acrylonitrile
StandardTRITAN
BPA-Free Copolyester
BPA FreeNot sure which resin suits your application?
Contact our process engineersfor a material compatibility assessment.
What is a one-step ISBM machine and how does it differ from a two-step machine?
A one-step ISBM (Injection Stretch Blow Molding) machine performs preform injection, temperature conditioning, stretch blowing, and product ejection in a single integrated machine — using the residual heat of the injection process (hot-preform method). A two-step machine separates injection from blow molding into two independent machines, requiring preforms to be cooled, stored, and reheated before blowing. The one-step approach reduces energy consumption, eliminates contamination risk during preform storage, and results in tighter dimensional tolerances and lower defect rates.
What materials can a one-step ISBM machine process?
Our one-step ISBM machines are compatible with PET, PETG, PETE, high-transparency PP, PC (polycarbonate), PMMA (acrylic), SAN, PS, PCTG, and TRITAN (BPA-free copolyester). The specific material capability depends on the machine model and screw/barrel configuration. Contact our technical team with your material and bottle specification for a compatibility review.
What bottle sizes and volumes can these machines produce?
Depending on the model and mold configuration, our ISBM machines can produce bottles from as small as 100 ml up to 5,000 ml (and larger on custom configurations). Neck diameters range from 18 mm to 148 mm. The 4-station series (HGYS150-V4 through EP-HGY650-V4) supports 1 to 12 cavities per cycle. The 6-station machine extends maximum volume capability further for wide-neck and large-format containers.
Is a 3-station or 4-station ISBM machine better for my application?
The 3-station machine is well suited for smaller batch production, compact factory layouts, or applications where PET/PETG is the primary resin and bottle geometry is relatively standard. The 4-station machine adds a dedicated temperature-conditioning and pre-blowing station (Station 2), which improves thermal uniformity — especially valuable for thicker preforms, multi-cavity molds, or high-clarity applications. For most B2B buyers running medium-to-high volume production, the 4-station configuration is the recommended starting point.
What auxiliary equipment is required for an ISBM machine installation?
A complete ISBM production line requires: a high-pressure air compressor (for blow air up to 3.5 MPa), a low-pressure air compressor (for machine operation at 1.0 MPa), a gas storage tank, a cold dry filter, a cooling tower, a chiller (ice water), a mold temperature controller, and an optional mechanical arm for bottle take-out. We provide a standardized layout diagram (Layout A–I) for each machine model to simplify facility planning and utility sizing.
Do you offer OEM or custom mold solutions for specific bottle designs?
Yes. We offer OEM mold design and manufacturing to match your specific bottle drawings, including custom neck finishes, body geometry, base design, and label panel requirements. Molds are designed within the cavity count and dimensional envelope of each machine model. Please share your 2D/3D bottle drawings and production volume targets when inquiring — our engineering team will confirm mold feasibility and provide a lead time estimate.
Do you offer OEM or custom mold solutions for specific bottle designs?
We provide remote technical support, installation guidance, operator training documentation, and spare parts supply. Our technical support team is available 24/7 via email and phone. For major installations, on-site commissioning services can be arranged. Contact [email protected] to discuss your support requirements before purchase.