Soft plastic packaging topics and ideas

Plastic packaging is under development and production and to be developed 1. High-temperature cooking bag:
This was developed by the United States in the 1950s for the packaging of aerospace foods. It was introduced to Japan in the 1960s and was rapidly developed in Japan. At present, though our country's high-temperature cooking bags pass the appraisal, there are very few that are put into production. This has not only raw material problems but also technical problems. Foreign high-temperature cooking bags, if they are transparent at room temperature, have a shelf life of at least one year, and opaque products must have a shelf life of two years or more. However, it is difficult for our country's high-temperature cooking bags to meet this requirement. Although the test data passed through the appraisal is close to the international level, the packaging effect is very poor. For this reason, it is very promising to concentrate on really taking down the high temperature cooking bag.
2. Production of low temperature heat sealable cover materials:
It is mainly used in PTP aluminum foil lids and jelly lids for pharmaceutical packaging. There are generally two forms; one is a solution, most of which are water- and ethanol-based non-toxic water-soluble resins are heat-sealable materials; the other is low-temperature heat-sealable hot melts, most of which are EVA hot melt adhesives. Good formula, really meet the use requirements in industry. The former can be applied by brushing, roller coating, knife coating, and the latter by extrusion coating or hot melt spraying.
3, the production of high barrier materials:
High-barrier materials refer to K-coated materials, namely: PVDC-coated various plastic films. Because PVDC has excellent gas barrier and moisture resistance, for this reason, K-coated films are often used in packages that require good gas barrier and moisture resistance. Such as: vacuum packaging, export down vacuum packaging is KOPP / LDPE structure of the composite film; sausage, fish, meat vacuum packaging, often using KOPP / CPP or KNY / LDPE and other structural packaging. Although some products produced by enterprises have already passed the appraisal, there are still some problems in mass production, and further research and promotion are needed.
Eval film or PVA coating film is another kind of high barrier material. eval is a copolymer of ethylene and vinyl alcohol. It has excellent gas barrier properties and good moisture resistance. It is also very broad for the development of such films. The project of the future.
4, paper / plastic / aluminum hose and soft cans production:
The country has introduced 8-10 hose packing lines for packaging toothpaste and pharmaceuticals. However, this type of paper/plastic/aluminum composites has not been studied in-depth domestically. There are also other foreign countries in terms of packaging requirements and other properties. A big gap. For this reason, if we can produce products that meet our needs on composite hoses, the future will be great. In addition, the composite soft cans made of paper/plastic/aluminum, as a sterile package, can be used to replace various types of foods and beverages instead of glass or tin cans, and have long-term shelf life at room temperature, and can generally be stored for more than 6 months. . This has great benefits in breaking the seasonality of beverage production.
5. Development of radiation sterilization packaging materials:
The use of X-rays, ultraviolet rays and r-rays to preserve fresh fruits and vegetables has made great progress in our country. After being photographed, vegetables and fruits can be preserved for up to one year. However, very few packaging materials have been researched and produced specifically for packaging vegetables and fruits.
6, composite materials for cable, electronic industry:
Composite materials have been quite common in the cable and electronics industries, such as composite films of polyimide film and vinyl for cable wrapping, composite materials with aluminum foil, and for electromagnetic shielding. It should be said that this is also a development direction of soft plastic packaging.
The idea of ​​the development of China's soft plastic packaging industry:
1. There are few varieties of plastic resins processed by soft plastic packaging factories, and some of them are of poor quality and it is difficult to meet the needs of processing plants.
2. At present, only films of polypropylene, polyethylene, polyester, polyvinyl chloride, etc. are available for the production of soft plastic packaging in China, but nylon (ON), polyvinylidene chloride (PVDC), and ethylene-vinyl alcohol can be manufactured. Manufacturers such as copolymers (eval) have not yet made soft plastic packaging products at a low level.
3, domestic production of soft plastic packaging with auxiliary materials, such as inks, adhesives, etc., some quality, but there are still blank varieties, to a large extent affect the development of soft plastic packaging.
4, packaging production equipment is simple, low degree of automation, features, affecting the production of high-quality products, the introduction of equipment, duplication, production and development of product duplication, combined product without characteristics, low quality, narrow field of application.
Therefore, in addition to the supply of raw and auxiliary materials and equipment for production should be resolved as soon as possible, in particular, to understand the development of foreign soft plastic packaging information, pay close attention to support some of the major domestic research institutions, some major domestic manufacturers of new products, new materials, New technology accelerates opening up. Only in this way can China's soft plastic packaging products be promoted and applied to light industry, textiles, electronics, chemical industry, military and aerospace as soon as possible so as to enable China's soft plastic packaging industry to enter the world's advanced ranks as soon as possible.