EVAL™ Processing / Sheet-Forming / Thermoforming

Thermoforming

Cups and trays of various shapes are produced with the thermoforming process. Thermoforming can be a low cost alternative to processes such as injection moulding and blow moulding. Thermoforming requires lower pressures and the machinery can be less rigid and less expensive to produce. In the thermoforming process, a plastic sheet, usually produced by an extruder, is softened by heat and then placed on one half of a mould.

The art of thermoforming is relatively simple when only one plastic material such as PS or polyolefines is involved but, in multilayer structures, each material has to be taken into account, each one having its own inherent deformation properties.

With the improvement of the technology for thermoforming composite structures, EVAL™ multilayer containers have been widely commercialised. This technology has taken into account the thermoformability of the EVAL™ resins that regulates the thermoformability of the whole structure. Kuraray researchers have developed several EVAL™ grades to meet the material combination and the forming process requirements.

Grades that have especially been developed for the thermoforming process are the EVAL™ J102B and T101B resins. The EVAL™ H171B is also a suitable grade for this processing technology.

Click on the underlined grades in the table below to see the datasheets:

EVAL™ RESINS

UNITS

J171B

H171B

Ethylene Content

mol%

32

38

 

Contact us for the complete documentation.