Do you really understand plastic film?

Plastic film refers to polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins as the main raw materials, and after being uniformly mixed in a certain proportion with other additives, it is formed into a certain thickness on plastic molding machinery equipment ( A plastic product having a thickness of 0.01-0.25 mm), a width and an infinite length, a smooth surface, smooth and soft.

First, the use of plastic film

The application of plastic film can be seen everywhere in agricultural production as a film, packaging of various agricultural products; packaging for industrial products in industrial production; packaging and rainproof appliances, toys and decorations used in clothing and food in daily life. Products, etc.; also have a variety of material surface composite film and special functional uses.

Second, the type of plastic film

BOPP plastic film not only has the advantages of low density, good corrosion resistance and good heat resistance of PP resin, but also has good optical properties, high mechanical strength and abundant raw material sources. PVA high barrier composite film is based on polyethylene plastic, has good barrier properties, and meets environmental protection requirements. It has broad market space in the food industry. LDPE polyethylene products have low density, softness, low temperature resistance, good impact resistance, good electrical insulation properties, and polyester film (PET), nylon polyamide (PA), cast polypropylene film (CPP). 8 kinds of aluminum-plated plastic film.

Third, plastic film common problems

It is well known that crystal lattice is a common problem for film manufacturers. Especially for large-area plastic film printing, the "white spot" waste products caused by crystal dots are a large proportion of the loss of the plastic bag industrial production process. Common problems in the diagnosis of plastic film industry problems, such as whitish surface of the product, cracking of the product, surface oil, black spots, etc., the rubber industry such as whitish surface, foreign matter precipitation.

Fourth, the technical method of formula analysis

The formulation analysis mainly solves some product performance problems caused by inaccurate grasp of the proportion of products and their additives in the production process of products and their additives, or some impurity components are mixed in the production process, resulting in the final product being unqualified. Mainly by means of spectral analysis techniques (spectrum, chromatography, energy spectrum, mass spectrometry, electron microscopy), the technical methods of qualitative analysis and quantitative analysis of unknown components are carried out to determine the cause of the problem and to develop the best solution.

The plastic film formulation analysis program is based on finding out the cause of failure, the source of foreign matter, the method of foreign matter extraction, the replacement of raw materials, the comparison of high-end formulas, the formation of product composition analysis reports, the issuance of authoritative analysis and test reports, and finally the interpretation of the experts, technical guidance, the basis Formulation, problem solving suggestions, etc.