Since the 1980s, due to the development of the plastics industry, packaging of goods in plastic containers has grown a lot more than it did 10 years ago. As new types of food such as frozen foods and convenience foods are sold on the market, a variety of innovative or modified packaging formats have emerged, among which the packaging bags and the hot platenable hot paper trays that are molded and loaded into the sealing equipment are the most popular. success.
1. Plastic Bottles The United States produces bottles using the following three main production methods: extrusion - blow molding, injection molding - blow molding and biaxial orientation molding. In Western Europe and Japan, in addition to the above three methods, co-extrusion and rotary welding are also used.
The most commonly used blow molding resins today are low density polyethylene and high density polyethylene, polyvinyl chloride, polypropylene, polyethylene terephthalate, polystyrene, styrene acrylonitrile, nitrile polymers and polycarbonate ester. Polyolefins (high-density polyethylene and polypropylene) and polyvinyl chloride have become the main packaging materials on the market. The use of polyolefin containers extends from hairdressing and beauty cosmetics to household and industrial detergents, pharmaceuticals, liquids, and dried foods, almost every consumer market. The United States now sells 500 million tons of polyolefin resin every year as a blow-molded container.
Polyvinyl chloride, nitrile polymers, and polyesters are more resistant to oxygen, carbon dioxide, and moisture than other resin containers. Polyester is the only clean food container resin approved by the U.S. Food and Drug Administration. Through orientation, polyester containers have been used to hold carbonated drinks, foods and medicines.
2. Molding - Loading - Sealed Bag (FFS Bag)
Molding - Loading - Sealed bags play an important role in modern packaging. It is a combination of packaging design, materials, and machinery. It can produce effective packaging to meet the needs of modern handling and sales methods.
Molding - Loading - The entire production process of the sealing equipment is automated. The bags are formed from roll stock (single or multi-layer webs and laminates), from the machine's cutting table output pockets, and the bags are sent to On the conveyor, it is transported to the packaging area, heat-sealed after loading, and then counted, tested and mounted. Vertical molding of one half ounce tomato paste per bag - Loading - sealer runs approximately 60 cycles per minute (packaging 600 bags/min). A 226.8 g (8 oz.) vertical machine per bag was circulated at 25 r/min (packaging 100 bags/min). However, higher-grade packaging materials, such as polyester/aluminum foil/polypropylene laminated too thin steamable bags, cannot generally be packaged at such a high production rate.
This packaging method is suitable for small packaging, accurate control of the weight, and can be mixed with steam in the bag, easy to open. The mixing in the bag is moulded--loaded--insulated in a sealed bag with a breakable film, separating the foods that need to be packed together, and adding water or other ingredients to the food. This eliminates the need for freezing and reduces bulk weight or shipping weight. (To be continued)
1. Plastic Bottles The United States produces bottles using the following three main production methods: extrusion - blow molding, injection molding - blow molding and biaxial orientation molding. In Western Europe and Japan, in addition to the above three methods, co-extrusion and rotary welding are also used.
The most commonly used blow molding resins today are low density polyethylene and high density polyethylene, polyvinyl chloride, polypropylene, polyethylene terephthalate, polystyrene, styrene acrylonitrile, nitrile polymers and polycarbonate ester. Polyolefins (high-density polyethylene and polypropylene) and polyvinyl chloride have become the main packaging materials on the market. The use of polyolefin containers extends from hairdressing and beauty cosmetics to household and industrial detergents, pharmaceuticals, liquids, and dried foods, almost every consumer market. The United States now sells 500 million tons of polyolefin resin every year as a blow-molded container.
Polyvinyl chloride, nitrile polymers, and polyesters are more resistant to oxygen, carbon dioxide, and moisture than other resin containers. Polyester is the only clean food container resin approved by the U.S. Food and Drug Administration. Through orientation, polyester containers have been used to hold carbonated drinks, foods and medicines.
2. Molding - Loading - Sealed Bag (FFS Bag)
Molding - Loading - Sealed bags play an important role in modern packaging. It is a combination of packaging design, materials, and machinery. It can produce effective packaging to meet the needs of modern handling and sales methods.
Molding - Loading - The entire production process of the sealing equipment is automated. The bags are formed from roll stock (single or multi-layer webs and laminates), from the machine's cutting table output pockets, and the bags are sent to On the conveyor, it is transported to the packaging area, heat-sealed after loading, and then counted, tested and mounted. Vertical molding of one half ounce tomato paste per bag - Loading - sealer runs approximately 60 cycles per minute (packaging 600 bags/min). A 226.8 g (8 oz.) vertical machine per bag was circulated at 25 r/min (packaging 100 bags/min). However, higher-grade packaging materials, such as polyester/aluminum foil/polypropylene laminated too thin steamable bags, cannot generally be packaged at such a high production rate.
This packaging method is suitable for small packaging, accurate control of the weight, and can be mixed with steam in the bag, easy to open. The mixing in the bag is moulded--loaded--insulated in a sealed bag with a breakable film, separating the foods that need to be packed together, and adding water or other ingredients to the food. This eliminates the need for freezing and reduces bulk weight or shipping weight. (To be continued)
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