Packaging bag and its making method

A packaging bag and film layer technology, which is applied in the field of packaging supplies, can solve problems such as difficulty, high manufacturing cost, and impracticality, and achieve the effect of scientific materials, scientific selection, and ideal effects

A packaging bag and film layer technology, which is applied in the field of packaging supplies, can solve problems such as difficulty, high manufacturing cost, and impracticality, and achieve the effect of scientific materials, scientific selection, and ideal effects

CN1429741AInactive Publication Date: 2003-07-16谢星倩
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  • Packaging bag and its making method
  • Packaging bag and its making method
  • Packaging bag and its making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] refer to Figure 1A As shown, the present invention provides a film layer structure 100 which is a layer of heat-sealable material capable of heat melting, and the film layer 10 shown in it is selected from acrylic, polyester, polyethylene, PE), polypropylene (polypropylene, PP), polythiamine (polyamide, nylon), polyethylene and polypropylene copolymer, ethylene and styrene copolymer (ethylene-styrenecopolymer, ES), cyclic olefin copolymer Polymer (cyclo olefin), polyethylene terephthalate (polyethylene terephthalate, PET), polyvinyl alcohol (polyvinyl alcohol, PVA), ethylene-vinylacetate (EVA), or made of (SurlynTm (Dupontionomer Ionic polymer compound trade name), polyethylene glycol terephthalate (polyethylene naphthalate, PEN), polyether ketone (poly ether ketone, PEEK), polycarbonate (polycarbonate, PC), polysulfone (polysulfone ), polyimide (PI), polyacrylonitrile (PAN), styrene and acrylonitrile copolymer (styrene acrylonitrile, SAN), polyurethane (polyurethane, ...

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Abstract

A packing bag for food is composed of a first film layer with several slits generated by calendering and a second film layer to interlock with several lateral edges of the first film layer. Its preparing process includes such steps as preparing high-molecular films, calendering, coating, hot pressing for enclosing edges, and cutting for removing excessive edges. It features that the food contained in it can be easily heated by microwave oven, high-temp. steam, boiling or infrared ray.

Description

1. Technical field: [0001] The invention relates to packaging supplies, in particular to a packaging bag and a manufacturing method thereof. 2. Background technology: [0002] At present, the more common packaging items used in microwave ovens on the market include plastic wrap (wrapfilm), special bags for microwave ovens, and dishes. The raw materials used in these packaging items are polyethylene (PE), polypropylene (PP), polythiamine (polyamide, nylon), polycarbonate (PC), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC) , polymethylpentene (PMP), ethylene-vinyl acetate (ethylene-vinyl acetate, EVA), polyurethane (polyurethane, PU) or SurlynTM (trade name of Dupont ionomer ion polymer compound), polyethylene terephthalate Ester (polyethylene terephthalate, PET), polyvinyl alcohol (polyvinyl alcohol, PVA), paper, synthetic paper, cellophane, wax paper, ceramic, glass and other materials or a combination of the above materials, the structure of the packaging items ...

Claims

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Application Information

Patent Timeline
16 Jul 2003
Publication
CN1429741A
IPC
B29D7/00; B32B3/00; B65B47/00; B65D30/02; B65D33/16
Inventors
谢星倩