Plastic film treatment agent and milk powder packaging plastic composite packaging film using same

Abstract

The invention discloses a plastic film treatment agent and a milk powder packaging plastic composite packaging film using the same. The plastic film treatment agent is prepared from 10-20 parts of polyamide resin, 10-20 parts of nitrocellulose, 20-40 parts of ethanol, 15-30 parts of isopropanol, 10-40 parts of n-propanol, 10-30 parts of acetic ether and 10-20 parts of n-butyl acetate. The composite packaging film disclosed by the invention is formed by compounding a PE (Polyethylene) inner layer, a VMPET (Vacuum Aluminum-plating Polyester) intermediate layer and a PET (Polyester) surface layer into a whole; and the treatment agent is coated on the outer surface of the PET surface layer. The treatment agent disclosed by the invention has the advantages of colorlessness, transparancy, no harm to human body, no toxicity and favorable heat resistance; and the friction coefficient of the outer surface of the plastic composite packaging film ranges from 0.24 to 0.35, thereby ensuring that the surface performance of a milk powder automatic packaging roll can meet the requirement on the current automatic filling machine. The composite film can resist the high temperature of 220 DEG C, so that the existing printing effect of the packaging film cannot be influenced.

Description

technical field [0001] The invention relates to a plastic film treatment agent and a plastic packaging film. Background technique [0002] For a long time, the strict requirements on the smoothness of automatic milk powder packaging machines have hindered the further promotion and use of automatic milk powder packaging. Since the smoothness of automatic packaging coils is mainly affected by the surface properties of the inner and outer substrates of the coils, the production of inner layer materials is due to the small batch size and the cost of adjusting the formula ratio is not large, which is a controllable factor of external source materials, while the outer layer Manufacturers of PET film, a commonly used material, have an output of hundreds of tons per batch, and change the entire production process solely for the automatic packaging of milk powder for the amount of several tons per batch, or even hundreds of kilograms. Because the cost is out of proportion to the prof...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the friction coefficient of the film surface of the existing automatic packaging coil is low. After the automatic packaging coil is put on the machine, the material cannot be pulled, which is easy to cause the coil to deviate back and forth, and basically no finished product packaging can be produced. , even if it is barely produced, its reject rate is extremely high, resulting in a huge waste of raw materials. A plastic film treatment agent and a plastic composite packaging film for milk powder packaging using the treatment agent are provided

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