This kind of plastic bags don't as a display of use!

by:Nanxin Print & Packaging     2020-03-31
Common plastic (on the market Structure: synthetic resin, plasticizer, stabilizer, pigment) There are two kinds of bags, plastic bags is a kind of new material, one kind is renewable plastic bags, the difference between them is the different of raw material, the raw materials for new made of polyethylene plastic granules, characteristic is the product smooth and soft, colorless, tasteless, no toxicity is commonly used in food packaging; The latter for recycling of plastic garbage or waste, after filtering processing of plastic particles, characterized by assaying the insufficiency, colorful and the surface is rough, because this product raw material sources and disorderly and contains a certain toxicity, commonly used in industrial and agricultural product packaging or ordinary comforts of life, the national ministry of health has issued notice, the production and use of recycled plastic bags range has carried on the strict rules, it is prohibited to use in any food packaging products, because it contains toxic to bring huge influence to people's health. Vacuum bag is after extracting vacuum, and filling the nitrogen, carbon dioxide and other gases. Nitrogen is inert, filling effect, make the vacuum bag to keep positive pressure, in order to prevent the outside air into the bag, bag of food plays a protective role. Carbon dioxide, corruption has inhibitory activity role of bacteria and other microorganisms. There are food such as crisp fragile, easy to deformation and oil food, there are sharp edges or high hardness will puncture the vacuum bag and so on food, after vacuum packaging, vacuum bag inside air pressure is greater than the atmospheric pressure outside packing bag, can effectively prevent food compression breakage, deformation, and does not affect the packaging and printing packaging appearance. As the vacuum bag packaging promotion and the development of the supermarket, its scope of application will be more and more widely, some will gradually replace rigid package. Plastic bags is essential items in People's Daily life, are often used to hold other items. Because of its cheap, light weight, large capacity, easy to receive the advantages of widely used, but because of the plastic bag with degradation cycle is very long, difficult faults by some countries ban the production and use. Now on the market use dark plastic bags, such as black, red, blue is mostly recycled waste plastics processing and become, again can't put food, ultra-thin plastic bags ( In the thickness of 0. Below 025 mm) Packing of is also prohibited. Aluminum foil bag general storage requirements to avoid direct sunlight, and away from fire, under the room temperature is 25 degrees Celsius can save 2 years. Aluminum foil bag, also known as polyamide 66 or nylon 66. Translucent light yellow or milk white opaque resin. Relative density 1. 14 ~ 1. 15, the melting point of 259 ~ 267 ℃. Excellent abrasion resistance, oil resistance, self-lubrication, heat resistance, strength and rigidity is the highest of aliphatic nylon varieties. The tensile strength of 75. 9 ~ 82. 9 mpa, compression strength of 91 mpa, cantilever beam impact strength ( Gap) 4 kj/m, heat deformation temperature ( 1. 82MPa) 75 ℃, R120 hardness, volume resistivity 1015 & Omega; · Cm, the dielectric strength of 35 kv/mm, self-extinguishing. Polycondensation reaction of adipic acid and adipic amine was prepared. But methods such as extrusion, injection molding, blow molding processing. Can strengthen, filling, alloying modification. Amount is used as fiber, tire shade vacuum bag packaging materials commonly used double composite thin film or three-layer aluminum composite membrane made of three seal bag. Vacuum packaging machine commonly used outside the cavity and pump type two kinds of models. Our vacuum packing technology is developed in the early eighty s, and vacuum packaging technology in the early ninety s began to use. These renewable plastic bags most is a small company or a family workshop production, there are a number is to use the collected waste plastic, industrial waste and discarded plastic recycling processing of medical institutions, nonsterile processing, contains high amounts of bacteria and carcinogens, entrance to the deli, directly with the plastic packaging for consumer health will be very serious consequences.
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