Food packaging manufacturer to take you bag heat sealing material knowledge

As hot sealing compound packing materials layer, because it is direct contact with the packaging, so, first of all, should consider its health, also should consider its transparency, resistance to permeability, good heat sealing and opening, etc. Now, professional manufacturer of flexible packaging shun xing source packaging 5 big film was introduced in detail the basic properties and application fields. A, polyethylene film ( PE） Features for polyethylene composite heat sealing layer, mainly is the low density polyethylene and linear low density polyethylene ( Also some products choose medium density and high density polyethylene film do the heat sealing layer) , and the more commonly used two kinds of polyethylene blend by certain proportion after use. According to the different processing method, can be divided into the blown film, stretch film and extrusion coating film. Compound with the thickness of the polyethylene film, according to the requirements of be packaging, choose different thickness, thin, can be in about 20 mu, thickness can be greater than 100 mu. Due to the many additives in the production of thin film with resin, slip agent, in particular, attention should be paid to the migration of additives in production. Applications of metallocene polyethylene is a revolution of the polyethylene resin, made of metallocene polyethylene film, has good thermal adhesive strength, heat sealing strength, have certain seal pollution resistance. The metallocene polyethylene with low density polyethylene blend film production, has been in the oil bag, shampoo bag, washing powder bag, etc widely used. Currently the heat sealing layer of compound packing is largely made of polyethylene, such as instant noodles, biscuits, preserved vegetable, pickles, etc. Blowing plastic film and stretch film in the central processing to through electric spark processing, make the film surface tension is greater than 38 dyne/cm. Second, polypropylene film ( PP) Polypropylene film can be divided into blown film ( The blow water cooling method) , stretch film and extrusion coating film. In the polypropylene film, stretch film of polypropylene film ( The CPP film) A kind of the most often used, it is mainly used in high-temperature cooking packing, high transparency, made aluminum plating CPP (CPP film plating aluminum VmCPP) After used in packaging, instant noodles, puffed food packaging, etc. High-temperature cooking CPP and raw materials of aluminium coated with CPP and ordinary CPP using different raw materials, have special requirements, high-temperature cooking besides general binary copolymer, with block copolymer, high temperature resistance of it should be the best; The aluminized CPP material is best terpolymer. Some enterprises in order to save costs, low requirements for the products, using polypropylene blown film as lining also enough. Production of thin film surface should been edm processing, film surface tension is greater than the best 40 dyne/cm. Three, a sealing film on the market supply of jelly, cold drink milk, yogurt, fruit and other food most is packed in plastic cups and plastic bottles, cups and bottles which are to thin film to sealing. Some requirements can be opened, and some don't. Don't reveal heat sealing layer is generally used in packaging, such as milk, fruit milk, a cup body or bottles is basically high density polyethylene ( HDPE) Made of resin as raw materials. Lining material as long as the use and the cup body ( The bottle) The same material. On the one hand, want to have a better seal strength, on the other side and should have revealed performance, for this kind of special requirements, the choice of heat sealing layer is very important. At the same time has two functions of EVA material is modified. EVA/ethylene/vinyl acetate copolymer, it with polypropylene and polystyrene has good caking property, but it differs from the molecular structure of polypropylene and polystyrene, when heat sealing adhesive, two kinds of resin can't completely diffusion, osmosis, fused together. Can only form have obvious interface bond. So choose modified EVA as capping the heat sealing film layer, both enough heat sealing strength, and can be stripped of yi jie. Four, special packing heat sealing material in some special occasions, such as coffee, meat packing, packaging, etc. , will use some special heat sealing materials, such as ionic polymer, EAA ( Ethylene acrylic acid copolymer) 、EEA( Ethylene - ethyl acrylate) 、EMAA( Ethylene - methyl acrylic acid) And so on. These materials need to be imported from Europe and the United States, Japan and other developed countries, the original less at home. However, with the rapid development of national economy in our country, more and more is also high to the requirement of packaging materials. The use of these special heat sealing material is becoming more and more widely. Five, co-extrusion film along with the development of packaging industry, market competition is intense, of single layer film more disadvantages appear, restricted the application of the resin.
are important in ensuring aluminum foil paper manufacturers, and the machine is utilised by everyone from aluminum foil paper manufacturers to aluminum foil paper manufacturers.
Kolysen Packaging Integration Co.,LTD. will accomplish this by exceeding the expectations of our customers while conserving resources and preserving the quality of the environment.
123 allows users to apply in different ways for satisfying their needs.
There's the area of manufacturing 123 that's becoming very important. If you can create those things, you build this closed bond.