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Is there a production license for the production of fruit drinks

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most plastics can be used for beverage and food packaging, among which the most used is low-cost polyolefins. The commonly used plastics include polyethylene, polyvinyl chloride, polypropylene, polyester, polyvinylidene chloride and polycarbonate? Polyethylene (PE)? Polyethylene is the largest synthetic resin in the world and the largest plastic packaging material in consumption, accounting for about 30% of plastic packaging materials? Low density polyethylene (LDPE) has better transparency, softness, large elongation, impact resistance and low temperature resistance than HDPE. It is still used in all kinds of packaging, but its disadvantages are obvious as a food packaging material? High density polyethylene (HDPE) has high crystallinity, allows high service temperature, and has good hardness, air tightness, mechanical degree and chemical resistance. Therefore, blow molding is widely used to make hollow containers such as bottles. Because of its high oil resistance, it is widely used to contain milk and milk products, and to package foods such as natural fruit juice and jam. However, the fragrance retention of HDPE is poor, so it is not suitable to store food and beverage for a long time. However, it can be used as the inner material of composite film because of its good heat sealing performance. For example, two-layer and three-layer composite materials have been widely used in beverage packaging. In the United States, composite bottles of cellophane /adhesive /PE are used to hold lemon juice? Polyvinyl chloride (PVC)? PVC plastics can be roughly divided into three categories: hard products, soft products and paste products. Plasticizers in hard products are generally less than 5%, and plasticizers in soft products are more than 20%? Because rigid PVC contains no or little plasticizer, its finished product has no peculiar smell of plasticizer, and has excellent mechanical strength, light weight and stable chemical properties, so the PVC container is widely used in beverage packaging. The PVC bottle produced by injection, pulling and blowing method has no suture and uniform wall thickness. It can be used to contain carbonated drinks such as Coca Cola? The safety of PVC materials has always been a concern. The content of vinyl chloride in PVC resin used for packaging shall not be higher than 1 × 10-6, that is, only 1 mg of vinyl chloride monomer is allowed to be contained in 1 kg of PVC resin. The vinyl chloride monomer can not be detected in food when the beverage is packaged in bottles produced with this PVC resin? Polypropylene (PP)? Polypropylene film is a highly crystalline structure with permeability of 1 /4 ~ 1 /2 of polyethylene. It has high transparency, smoothness and high processing performance. It is widely used to prepare fibers and molded products, but it is mainly plastic film? At present, the coated film of polypropylene with air tightness and easy heat sealing and the composite materials compounded with other films, cellophane, paper and aluminum foil have been produced in large quantities. The containers made of PP composite materials can be used for beverage packaging? All kinds of PP have a common feature with static electricity. In order to solve this problem, antistatic agent is usually coated on the film or mixed in the film. Coating polyvinylidene chloride resin with good air tightness on the film can improve the antioxidant polyester (PET or PETP) of PP? Pet is a kind of material with good crystallinity, colorless, transparent and extremely tough. It has the appearance of glass, odorless, tasteless, non-toxic, flammable, yellow flame with blue edge when burning, and good air tightness? Pet has small expansion coefficient and low molding shrinkage, only 0.2%, which is one tenth of polyolefin and smaller than PVC and nylon, so the size of the product is stable. The mechanical strength is the best, and its expansion degree is similar to that of aluminum. The film strength is 9 times that of polyethylene, 3 times that of polycarbonate and nylon, and the impact strength is 3 ~ 5 times that of general films. And its film has moisture-proof and fragrance retention properties? Although polyester has the above advantages, its film is expensive, difficult to heat seal and easy to carry static electricity, so it is rarely used alone. Most of them are coated with resin with good heat sealing property to make composite films? The PET bottle with biaxial extension blow molding method can give full play to the characteristics of pet, that is, it has good transparency, high surface gloss and glassy appearance. It is the most suitable plastic bottle to replace the glass bottle? In recent years, the production of PET bottles has developed rapidly. Heat resistant PET bottles are widely used in hot canned drinks such as tea drinks and fruit juice drinks? Polyvinylidene chloride (PVDC)? PVDC is characterized by its softness and low permeability, which can prevent the penetration of peculiar smell, and has good freshness and aroma preservation performance. It is suitable for long-term preservation of food; It has excellent resistance to acid, alkali, chemicals and oil, and has good heat shrinkability. It is suitable for sealed packaging. It is a good heat shrinkable packaging material? The disadvantage of PVDC is too soft and poor operation; Strong crystallinity, easy to crack and perforation, poor aging resistance; Its monomer is also toxic, so it is mainly used as coating material or composite material? PVDC is often made into composite materials or PVDC coating materials with paper, aluminum foil and other plastic films. Good bonding can be obtained by solvent bonding. These composites have excellent moisture-proof, oxygen proof and sealing properties. They are also easy to heat seal. They are suitable for packaging aqueous food? Polycarbonate (PC)? PC is colorless, transparent, bright and beautiful plastic. PC is an ideal food packaging material because it is non-toxic and odorless, has good UV resistance, moisture resistance and fragrance retention, has a wide temperature resistance range, is not brittle at – 180 ℃ and can be used for a long time at 130 ℃? Using the characteristics of good impact resistance and easy molding of PC, it can be made into bottles, cans and containers in various forms, which can be used to pack fluid substances such as beverages, wines, milk and so on? The biggest disadvantage of PC is stress cracking. In addition to selecting high-purity raw materials and strictly controlling various processing conditions, the use of resin modification with low internal stress, such as a small amount of melt blending of polyolefin, nylon and polyester, can significantly improve the stress cracking resistance and water resistance.

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