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source： time,time：2015-09-18 15:17:58

stretch film, also called the stretch film, stretch film, shrink film, one of the earliest pvc as the substrate, doa as plasticizer and adhesive effect of pvc film production. because of environmental issues, the high cost (relative to the pe unit packaging area is less than the major, etc.), poor tensile reasons, when kai started production in china from 1994 to 1995, pe stretch film gradually be eliminated. pe stretch film is first yieva adhesive materials, but the cost is high, and the taste of you, after the development of pib, vldpe adhesive materials, the substrate is yilldpe, including c4, c6, c8 and pe (mpe) metallocene.

the definition of de film
early lldpe stretch film yi film more, from single to two layer, three layer; now the production lldpe stretch film yi casting method, this is because the casting production line you with uniform thickness, high transparency, and can be suitable for high rate pre stretching de. do not cast the single-layer single side adhesive, application field is limited. single, double casting in the choice of materials is not you three layer of cast de wide, formula cost is high, the yi or the yi three layer structure of de ideal. high quality de stretch film should be you high transparency, high longitudinal elongation, high yield, transverse tear strength, good performance characteristics of puncture.

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