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A double-layer co-extrusion and co-extrusion casting technology, applied in the field of packaging materials, can solve problems such as film material aging
Active Publication Date: 2018-11-09
江苏求实塑业有限公司
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Especially in the process of long-term use, it will cause a certain aging of the film material, so there is an urgent need for a film material that still has high barrier properties under long-term use conditions, and takes into account flame retardancy and antibacterial properties
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[0049] A double-layer co-extrusion casting film, adding PP plastic particles and PET plastic particles to a co-extrusion casting film machine to make a PET / PP film including a PET layer and a PP layer,
[0050] The PP plastic particles comprise the following components by weight:
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Abstract
The invention discloses a double-layer coextrusion casting film which comprises a PET layer and a PP layer. PP plastic particles comprise PP, trihydroxy polyoxypropylene ether, N,N'-(4,4'-methylene diphenyl)bismaleimide, trimethylolpropane trimethacrylate, 4,4'-dyhydroxyl diphenyl sulfide, montmorillonite, paraffin, antioxidant 1010, nano TiO2, polyether siloxane copolymer, methyl hydroxyethyl cellulose and VTPS silane coupling agent. PET plastic particles comprise terephthalic acid, ethylene glycol, maleic anhydride, 2-nitroterephthalic acid-4-methyl ester, 2,2-dimethyl-1,3-propylene glycol, 2,3-dibromo-2-butene-1,4-glycol, 1,4-benzene dimethanol, 2-aminoterephthalic acid, tetrabromo terephthalic acid, bis(2-ethyl hexyl)terephthalic acid, 4-bromo phthalic anhydride, 2,2-difluoro-1,3-benzodioxole, magnesium fluosilicate and antibacterial agent. By the combining of the PP layer and the PET layer, the whole composite film is high in barrier property, antibacterial and flame-retardant.
Description
technical field [0001] The invention relates to a packaging material, more specifically to a double-layer co-extruded casting film. Background technique [0002] High-barrier film is a multi-layered film made by simultaneously extruding a material with strong gas barrier properties and polyolefin with strong thermal seam and moisture barrier properties. [0003] In the prior art, there are other new requirements for high barrier films, especially in some food packaging, there are also some requirements for antibacterial performance and flame retardancy. Especially in the process of long-term use, it will cause a certain aging of the film material, so there is an urgent need for a film material that still has high barrier properties under long-term use conditions, and takes into account flame retardancy and antibacterial properties. Contents of the invention [0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide one. [00...
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