Development Trend Of Plastic Products

The development direction of plastics can be summarized in two aspects. One is to improve performance, that is, to modify existing varieties in various ways to improve their comprehensive performance; the other is to develop functions, that is, to develop polymer materials with physical functions such as light, electricity, and magnetism, so that plastics can have Photoelectric effect, pyroelectric effect, piezoelectric effect, etc.

Judging from the current development speed of the world's plastics industry, Germany and Sweden rank first, followed by Japan and some European countries, and the United States is slower. Foreign plastic packaging presents the following development trends:

1. Copolymer composite packaging film

At present, some countries in Europe and the United States have invested heavily in the development of non-polar and polar ethylene copolymers, which will greatly improve the tensile and co-extrusion properties of plastic films, and improve transparency, sealing strength, stress resistance, crack resistance, and enhanced stability. , Improve molecular weight cloth and extrusion rheological properties.

Foreign experts believe that the current development of the world's plastics industry focuses on plastic modification, coating technology for plastic products, rapid biodegradation of waste plastics, and comprehensive technology for plastic recycling. For example, some European and American manufacturers use linear ethylene-alpha olefin copolymer and ethylene-vinyl acetate copolymer mixed/PA bag, which is suitable for packaging ice cream, milk fat and other foods.

2. Multifunctional composite film

A large number of foreign countries have developed multifunctional composite films to further refine their functions. For example, the cold-resistant film can withstand the low temperature environment of -18°C, -20°C, and -35°C; the moisture-proof film made of PP is treated with moisture-proof treatment, and its series products can be divided into moisture-proof, anti-condensation, anti-steam cooling, and adjustable moisture. Anti-corrosion film can pack perishable, high acidity and sweet food; friction film is stable in stacking; special PE film is chemical and corrosion resistant; moth-proof film is added with no odor and insect repellent; The heat-resistant film of stretched nylon 66 replaces biaxially oriented nylon 6 for packaging food, and its high temperature resistance can reach 140 °C; the new special food packaging film can improve the aroma retention of food packaging; the transparency of amorphous nylon film is similar to glass; the high shielding film can protect The stability of color, aroma, taste, nutritional index and taste quality; metal protective film adopts LDPE modified film to package liquid products, which can be heat-sealed in low temperature environment; PP synthetic paper improves the light resistance, cold resistance and resistance of the package. Heat resistance, water resistance, moisture resistance, grease resistance, acid resistance, alkali resistance and impact resistance, etc.

At present, plastic cups and composite cups (outer layer PSP, inner layer PP, lid PS) are popular in foreign countries to package cold and hot beverages, wine and instant food. France uses PE bottles to pack fructose and yogurt, and Germany uses PC bottles to pack milk. my country uses PE bottles to package medicines, etc.