Home/Machines/Single-Stage PET Stretch Blow

HassanPlas One-Step ISBM

Single-Stage PET Stretch Blow Moulding Machines

Q: Which materials can be processed?

PET is the main material, and single-stage machines also run PETG, PP, PC and Tritan copolyester with the right screw, mould and process settings.

Q: What auxiliaries does a single-stage line need?

A PET resin dehumidifying dryer, auto loader, water chiller, mould temperature controller, and a high-pressure air compressor with air dryer, filters and receiver tank for blowing air.

One-step injection stretch blow moulding (ISBM) machines that inject the preform and stretch-blow it into the finished container in a single machine. There is no preform reheating and nothing is handled in between. They are the right choice for wide-mouth jars, cosmetic and pharmaceutical bottles, oval and offset-neck designs, and premium scratch-free PET packaging.

How single-stage works

Four stations, one continuous heat history

1 · Preform injection. Dried PET is injected into the preform mould. The neck finish is formed precisely and stays held by the neck ring for the rest of the cycle.
2 · Conditioning. The still-warm preform is temperature-profiled by zone, so the stretch is even.
3 · Stretch blowing. A stretch rod and high-pressure air form the container in the blow mould, giving biaxial orientation for clarity and strength.
4 · Ejection. The finished container is released, untouched by hand or conveyor until it is complete.

PET preforms, wide-mouth jars and moulds for stretch blow moulding

Why one-step

Where single-stage beats two-stage

No reheating

The preform keeps its injection heat, so there is no reheat oven and less total energy per container.

Scratch-free finish

Preforms are never stored, tipped or conveyed in bulk. That matters for cosmetics and premium food jars.

Wide-mouth & oval shapes

Large necks, oval bodies, offset necks and thick-wall jars that are hard or impossible on reheat machines.

One machine, one footprint

One machine and one operator, with no preform warehouse and no preform supplier to rely on.

Many SKUs

Change one mould set to switch product. That suits contract packers and brands with many container designs.

Beyond PET

Also runs PETG, PP, PC and Tritan for baby bottles, sports bottles and pharma containers.

Single-stage vs two-stage: quick decision guide

Your situation	Recommended
Very high volume, few designs (water, CSD, juice 200 ml–2 L)	Two-stage: preform injection + reheat blow moulder
Wide-mouth food, nut, honey or powder jars	Single-stage
Cosmetic, personal-care and pharma bottles, small batches, many SKUs	Single-stage
Oval, flat or offset-neck containers	Single-stage
Buying preforms from a supplier, blowing only	Two-stage blow moulder only
Small HDPE/PP bottles with exact necks, not PET	Injection blow moulding

More detail: PET preform vs blow moulding machines and all blow moulding processes compared.

Applications

Containers we set up lines for

Food jars

Honey, peanut butter, dry fruit, spice, confectionery and powder jars with wide necks.

Cosmetics

Cream jars, lotion, shampoo and toner bottles with a premium, scratch-free gloss.

Pharma & health

Syrup, tablet and supplement bottles in PET, PETG or PP.

Edible oil

Clear PET oil bottles, including oval and handle-grip shapes.

Beverage specialty

Juice, dairy and sports bottles in short to medium runs.

Household

Liquid soap, sanitiser and cleaning-product bottles.

Complete line

What a single-stage line includes

Single-stage ISBM machine, sized to your container's volume, neck and output.
Mould set: preform mould with hot runner, conditioning pots, stretch rods and blow mould, built and trialled for your design.
PET dehumidifying dryer and auto loader, because PET must be dried before injection.
Water chiller and mould temperature controller.
High-pressure air: compressor, refrigerated dryer, filters and air receiver.

See auxiliary equipment →

High-pressure air compressor, air tank, filters and dryer for PET blow moulding

Frequently asked questions

What is a single-stage PET stretch blow moulding machine?

It is one machine that injection moulds the preform and then, while the preform is still warm, conditions it and stretch-blows it into the finished container. There is no separate preform machine, no preform storage and no reheating oven.

When should I choose single-stage instead of two-stage?

Choose single-stage for wide-mouth jars, cosmetic and pharmaceutical bottles, oval or offset-neck designs, scratch-free premium containers, and small-to-medium volumes with many SKUs. Choose two-stage (a preform injection machine plus a reheat blow moulder) for very high-volume water and beverage bottles.

Which materials can be processed?

PET is the main material. Single-stage machines also run PETG, PP, PC and Tritan copolyester with the right screw, mould and process settings.

What auxiliaries does a single-stage line need?

A PET resin dehumidifying dryer, auto loader, water chiller and mould temperature controller. Blowing air needs a high-pressure air compressor with air dryer, filters and a receiver tank.

Get a single-stage ISBM quote

Send us your container drawing or sample, neck size, weight, material and monthly volume. We'll match the machine and mould cavitation, and quote the complete line with landed cost. WhatsApp +92 321 4466539.

Request a Quote →