Main raw materials

The main raw materials of the three layer co extrusion heat shrinkable packaging film include LLDPE (linear low density polyethylene), TPP (three yuan co polypropylene), PPC (two yuan co polypropylene) and necessary functional additives such as lubricants, anti adhesion agents, antistatic agents and so on. These raw materials are all environment-friendly, non-toxic materials. No toxic gas or odor can be produced during the processing and product application. The hygienic properties of the products conform to the FDA and USDA standards of the US, and can be used for packaged foods.

Production process

Three layer heat shrinkable packaging film is based on a linear low density polyethylene (LLDPE) and polypropylene (TPP, PPC) as the main raw material, add the necessary additives by coextrusion blow molding processing of the blow molding process, the different process with the traditional state, due to poor tensile properties of PP melt, and therefore can not be used to blow molding the traditional, and double bubble technique, called the international prandi process, it is raw material with different extrusion machine by melt extrusion, CO extrusion die with special design, the formation of early film after quenching after heating two blowing drawing products.

main performance

Product specification

The three layer co extrusion heat shrinkable film can produce various specifications according to its usage. The general thickness range is 12 m to 30 m, and the commonly used thickness is 12 m, 15 m, 19 m, 25 m, etc. the width specification depends on the volume of the package.

Cold resistance

The three layer coextrusion heat shrinkable packaging film is soft under the environment of - 50 C, and does not occur brittle fracture. It is suitable for storage and transportation of packaging in cold environment.

Health performance

The three layer co extrusion heat shrinkable packaging film is made of raw materials of environmental protection and non-toxic materials. The process and application process is hygienic and non-toxic. It accords with the national FDA and USDA standards, and can be used for food packaging.