Anything is possible

Production

Greiner Assistec relies on a large number of plastic production technologies. This technological versatility ensures that our customers receive objective advice ideally tailored to their individual needs.
This technological diversity is continuously being expanded through regular investments, benefiting all of our customers.

Liquid Injection Molding Liquid Injection Molding
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Liquid Injection Molding

Liquid Injection Molding
A two component liquid silicon rubber (LSR) is pumped to a mixing station via a dosing unit. Following it is injected into a heated mold. LSR possesses excellent thermal characteristics and has no plasticizers at all. It is also tasteless, odorless, and biocompatible.

Material: two component liquid silicon rubber (LSR)
Products: seals, pacifiers,…

Injection Molding Injection Molding
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Injection Molding

Plastic granulate is melted, injected into the desired shape under pressure, cooled, and automatically extracted or ejected.  Almost every shape, even those with undercuts, can be manufactured using the injection molding procedure.

We use injection molding machines with a clamping force from 25 to 1.000 tonnes.

Materials used: primarily PP, PS, PE, PA and PC as well as fiber-reinforced materials
Products: parts for toner containers, household-, DYI- and personal care appliances

Extrusion Blow Molding Extrusion Blow Molding
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Extrusion Blow Molding

A tube is extruded, cut off, and transferred to a shaping tool where it is inflated with compressed air.

Materials used: PE and PP

Products: containers, covers for cutting edges,  downtake tubes and tanks

Injection Stretch Blow Molding Injection Stretch Blow Molding
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Injection Stretch Blow Molding

The granulate is melted and injection-molded into a preform that already has the finished opening of the product. The preform is then stretched forward in a second tool and, using high pressure, blown into the blow molds for the finished product. Injection and blowing are done as part of a process, so that the residual heat in the preform can be used efficiently.

Materials used: primarily PP and PS

Products: products for the toy and chemical industry

Sheet Thermoforming Sheet Thermoforming
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Sheet Thermoforming

The extruded film (0,15 to 2 mm thin) is fed from the roll to the thermoforming machine where it is heated. The thermo-elastic sheet is then stretched forward in the tool and molded by compressed air and vacuum, cooled down and punched.
The products are ejected and stacked, then further processed or packed, depending on the respective application. The skeleton sheet can be grounded right at the machine and later be processed as raw material during sheet extrusion. This technology results in products with a size of up to 760 x 500 mm.

Materials used:
thermoelastic sheets made of PS, PP, PE, PET, R-PET

Products:
e.g. blisters and trays

Plate Thermoforming Plate Thermoforming
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Plate Thermoforming

Plastic plates (up to 1.5 x 2.5 m) from plastics that can be shaped in a thermally softened state are processed on vacuum-forming machines. After a cooling phase, the thermoformed products are processed using a CNC-controlled five-axis milling machine, giving them their final outer contour and recesses. Thermoforming lacquered and decorated plates give products high-gloss surfaces, metallic, carbon look, or root wood effects, as well as a modern look (e.g., brushed aluminum).

Materials used: ABS, PMMA, PP, PS, ASA

Products: primarily housings, cladding, transport containers, components with metal inserts

Twin-sheet procedure: Two plastic plates are held in a common tensioning frame and heated on each side to a thermoelastic state. Afterwards, they are simultaneously deformed in the upper and lower tools and welded together. The two plates can be of differing strengths and exhibit different colors and contours.

Products: primarily reusable pallets

Pad Printing Pad Printing
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Pad Printing

A pad gets ink from an inked plate and transfers it onto the article being printed. Up to four colors are applied consecutively onto the base material.

Laser Marking Laser Marking
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Laser Marking

Lasers can be used to give plastic parts lettering and markings. Surface engravings or colorizations can be done depending on the material and the laser parameter settings. Even markings without tactile indentation on the surface can be done. Laser labeling is abrasion-, heat-, and acid-resistant.

Liquid Injection Molding

The technology Liquid Injection Molding (LIM) is used to manufacture elastomer molded parts made of liquid silicone rubber (LSR). The special properties of this material make it suitable for a large number of applications, from medical technology to the food sector, to electrical engineering or mechanical engineering, or even in sanitary engineering as well as sports and leisure. This comes as no surprise, since LSR is tasteless and odorless, biocompatible, plasticizer-free, and also has excellent thermal properties.

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This new technology allows us to respond to the increased demand in the market for silicone components, which means we can satisfy the needs of our customers even better. Andreas Kaiser, Manager Assistec St. Gallen

Wide range of offerings

Advantages of LSR

  • Temperature-resistant between -50 °C and +250 °C, while maintaining elastic properties
  • Odorless and tasteless
  • Plasticizer-free
  • Excellent biocompatibility (suitable for the food 
  • and drug industry)
  • Transparent material can be colored as desired 
  • High temperature resistance and flashpoint
  • Favorable fire behavior
  • Good electrical insulating properties
  • Very good weather and aging resistance
  • Environmentally friendly
  • The molded parts can be manufactured spruelessly and without burrs

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Li-quid Injection Molding machine
What are silicones?

What are silicones?

Silicones belong to the group of organosilicon compounds and are classified in the plastics groups of elastomers. Depending on the type of vulcanization and viscosity of the base polymer, a distinction is made between different grades of rubber as well as high-temperature and low-temperature vulcanization. Because of its special properties, Greiner Assistec is focusing on LSR, which belongs to the group of high-temp vulcanizing rubbers and exhibits a particularly low viscosity. LSR is a pumpable 2-component mixture and is a superb choice for processing in injection molding processes.