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Revolutionary injection-compression systems for the production of PET preforms: entering into a new era

XTREME is a rotary platform for manufacturing preform at high productivity and efficiency. With this revolutionary injection-compression molding system, SIPA has taken PET preform production into a new dimension.

XTREME permits the highest L/t ratios in the industry, enabling you to produce preforms that are 8% lighter than even the lightest preform produced by conventional injection molding.

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HIGHLIGHTS

Lowest TCO in the industry
Highest ratio (L/T), design freedom
Totally oil free
Significantly reduced footprint
Reduced material stress due to lower injection pressure: low AA content and IV drop
In line preforms inspection: 100% camera quality control
Simultaneous production of two different preforms
Less material: 8%lighter preforms without losing any key properties
Extremely quick mold changeover(1 minute per cavity)

PLASTIFICATION

Main features of extruder unit:

Electrically-driven screw extruder motors and motion
Pure extrusion process without shooting pot
Optimization of plasticizing screw with true continuous rotation to reduce consumptions and AA levels
Possibility to use PET recycled flakes up to 50% without any modifications to standard plastification group

ROTARY INJECTION-COMPRESSION

Rotary molding wheel:

Modular design of the wheel and of the press module
Reduced cavity tonnage for reduced mold wear (max 2 ton)
Mold safety: intrinsic protection; each mold can remain open
Easy maintenance: each module can be fast removed (20 minutes per station)
The use of single cavity dosimeter allows the simultaneous production of 2 different preforms
Preforms exit aligned, so can be sorted in different bins

PREFORMS POST MOLD COOLING (AIR)

Cooling with cold air at high speed on external and internal preform surface
No change over needed: self adapted grippers
Cooling time = 6 cycle time
Spiral chain equipped with high efficiency bearing: no maintenance needed
4 possible releasing points
Rejection point driven by quality camera checking (optional)

PREFORMS POST MOLD COOLING (WATER)

Modular system
Preform cooling in customized tubes thermoregulated by chilled water, vacuum in tubes is also provided by rotary distributor (rotative valve)
Air jet cooling inside the preform and NF with thermoregulation and flow rate control by inverters
Gentle preform neck handling by active grippers
Camera inspection of preform body
Optional downstream SINCRO connection to blowing wheel
Sorting in case of 2 simultaneous preform production

Materials

PET
Recycled PET
rPET flakes

Type

Extreme lightweight
Preform revolutionary design: longer preforms with very thin thickness

MODEL	CAVITATION	MAX OUTPUT (P/HOUR)	MIN PREFORM BASE THICKNESS (mm)	MAX PREFORM WEIGHT (g)	MAX PREFORM LENGHT (mm)
XTREME	96	up to 70,000	0.95	60	150
XTREME	72	up to 57,600	0.95	60	150

APPLICATIONS

XTREME, rotary preform injection-compression systems produce a wide range of light weighted preforms with the freedom to create new and unique designs. There is almost no limitation on wall thickness, and L/t can be up to 80 - close to twice that normally possible with injection molding.

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