Double-layer composite hot melt adhesive film for bonding metal and plastic
A technology of hot-melt adhesive film and double-layer compounding, which is applied in the direction of film/flaky adhesives and adhesives, etc. It can solve the problems of volatile substances in liquid adhesives, inconvenient processing and operation, and hazards to operators, so as to achieve the goal of processing The operation is convenient and fast, the operation is simple and convenient, and the effect of reducing the difficulty of processing
Active Publication Date: 2009-05-13
GUANGZHOU LUSHAN NEW MATERIALS
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At present, it is mainly directly bonded by liquid glue such as epoxy glue and polyurethane glue. Liquid glue contains v
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[0017] As shown in Figure 1: the present invention is composed of upper and lower double-layer adhesive films. The thickness of the double-layer composite adhesive film is 0.05 mm to 0.20 mm, wherein the lower layer is attached with release paper 3, and the upper layer is a hot-melt adhesive bonded with metal. Adhesive layer 1, the thickness of which is 20-60% of the thickness of the composite film, the lower layer is a hot-melt adhesive layer 2 bonded with plastic, whose thickness is 40-80% of the thickness of the composite film, the lower layer is attached with glassine release paper, Composite by co-extrusion casting or double-layer composite hot melt adhesive film.
[0018] The hot melt adhesive on the upper layer is composed of 10-50% polyethylene by weight, 5-30% polyethylene graft polymer, 10-40% ethylene copolymer, 5-30% thermoplastic elastomer, 10-30% polyethylene 50% of tackifier and 0.1-1.0% of antioxidant and ultraviolet absorber are extruded and granulated by a tw...
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The invention discloses a double-layer composite hot melt adhesive film adhering metal and plastic, which is formed by compounding an upper adhesive film layer and a lower adhesive film layer, wherein the lower adhesive film layer is attached to a piece of release paper, the thickness of the composite adhesive film is 0.05 to 0.20 millimeter, the upper adhesive film layer is a hot melt adhesive layer adhered with the metal, the thickness of the upper adhesive film layer is 30 to 60 percent of the thickness of the composite film, the lower adhesive film layer is a hot melt adhesive layer adhered with the plastic, the thickness of the lower adhesive film layer is 40 to 70 percent of the thickness of the composite film, and the lower adhesive film layer is attached to a piece of glassine release paper. The double-layer composite hot melt adhesive film directly compounds two modified hot melt adhesives with different adhesive properties, is adhered with the release paper to prevent rolling from adhering and the adhesive film from being damaged, reduces application of a middle isolating layer, reduces the thickness of the composite adhesive film, and is prepared by once casting through coextrusion casting equipment or twice casting through common coextrusion casting equipment. The double-layer composite hot melt adhesive film can be used for composite adhesion of metallic materials such as aluminum, stainless steel and the like and plastic such as ABS, PVC, PET and the like, is particularly suitable for mutual adhesion between sheets, plates and films of the metal and the plastic, and has simple and convenient operation and no pollution.
Description
Technical field: [0001] The invention relates to the technical field of hot-melt adhesive films, in particular to a double-layer composite hot-melt adhesive film used for bonding metal and plastic. Background technique: [0002] The application of metal and plastic direct bonding is more and more widely, especially the bonding of metal sheet (sheet) and plastic sheet (sheet), which is more and more used in the electronics industry, machinery industry, construction industry, etc. At present, it is mainly directly bonded by liquid glue such as epoxy glue and polyurethane glue. Liquid glue contains volatile substances, pollutes the environment, and is harmful to operators, and the processing operation is inconvenient. The hot-melt adhesive film is a solvent-free solid, without volatiles, pollution-free, convenient and fast processing operation, and can be repeated, which is conducive to large-scale and rapid operation of the factory. Patent CN1772462 introduces a three-layer c...
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Login to view more IPC IPC(8): C09J7/02C09J123/06C09J123/08C08J5/12
Inventor 王大伟陈占春汪加胜唐舫成
Owner GUANGZHOU LUSHAN NEW MATERIALS
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