Plastic hoses emerge in cosmetic packaging and

Plastic hoses are easy to use, economical and hygienic, and have become one of the main packaging varieties for cosmetics, medicine and food. Since the 1990s, China has introduced a large number of advanced composite hose production equipment from Europe, America, Japan and Taiwan Province, and the development momentum is very strong. Multi-layer, thin-wall and transparent plastic composite hoses are the future development trend. Whether it is cosmetics, medicine or food, packaging must first consider hygienic properties, followed by mechanical strength, as well as barrier properties, printing adaptability and chemical resistance. Of course, economy and convenience must also be considered. Compared with other product packaging, cosmetic packaging has higher requirements on water and oxygen resistance. On the one hand, the water-containing fat may contain mold and yeast, which will cause fat oxidation, fat hydrolysis, and oxidation into fatty acids and glycerides. Therefore, increasing the moisture in the oil will cause the hydrolysis of the oil on the one hand, and accelerate the auto-oxidation reaction on the other hand, provide a living environment for microorganisms, and reduce the vitality of certain antioxidants such as polyamines. In addition, some powdered products must prevent the absorption of moisture and cause agglomeration, hardening and deterioration, so many cosmetic packages need to block the entry of moisture; on the other hand, some water-containing products are used to clean the skin, so it must be To maintain a certain moisture content during the period, therefore, it is necessary to prevent the escape of moisture. Oxygen is the most important factor causing cosmetic rancidity. Most cosmetics contain oils and fats. The unsaturated bonds in oils are easily oxidized and cause deterioration and rancidity. As long as a small part of the unsaturated oil starts to oxidize, it will cause the complete rancidity of the oil, thereby reducing the quality of the product. Therefore, in the production, storage and use of cosmetics, every effort should be made to avoid the occurrence of oil rancidity and prevent the entry of oxygen. On the whole, plastic hose has the advantages that other materials are incomparable. Therefore, since its inception, it has emerged in cosmetics and pharmaceutical packaging. Now it has become an indispensable form of packaging for cosmetics and medicines. According to material classification, plastic hoses can be divided into single-layer hoses and multilayer hoses. Single-layer hoses include metal hoses and plastic extruded hoses; multilayer hoses include aluminum-plastic composite hoses, plastic composite hoses, and plastic co-extruded hoses. According to the classification of processing technology, plastic hoses can be divided into seamless pipes and seamed pipes. Most of the large-scale plastic hose and curing agent hose manufacturers in China have introduced high-speed pipe making machines from Switzerland KMK and AISA; flexographic printing machines and gravure printing machines from the United States, Japan or Taiwan Province; German or Italian co-extrusion composite Machine and dry compound machine; cutting and slitting machine, bag making machine and film blowing machine from Japan, Italy or Taiwan, and other world-class advanced production equipment. Cosmetics and medicines are the largest users of plastic hoses, and currently they are mainly used for the packaging of some condiments in food. Applications in other areas need to be expanded.