JP3074021U - Packaging material - Google Patents

Abstract

(57) [Abstract] [Problem] To provide a product that can be recycled without being incinerated after use as a packaging material such as an iron plate coil or a steel plate material. SOLUTION: A cloth woven by using polyethylene yarn and / or polypropylene yarn for warp yarn and weft yarn, and an inner foam film made of polyethylene resin or polypropylene resin on one side of the cloth via a laminator made of polyethylene or polypropylene resin. To be glued together. At this time, the thickness of the internal foam film of polyethylene or polypropylene is about 5 to 100 microns.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a packaging material that can be suitably used for packaging a steel plate coil, a steel plate material, and the like.

[0002]

[Prior art]

 Various types of packaging materials are commercially available. Among these, packaging materials such as steel sheet coil and steel plate material include kraft paper, polyethylene and polypropylene films and sheets, the same non-woven fabric, and single materials of these. One or a combination of these is used. By the way, at present, these used packaging materials are incinerated and disposed of exclusively by users, without being recycled by manufacturers.

[0003]

[Problems to be solved by the invention]

 There is a problem of dioxin generation in the above incineration, which has a bad effect on the environment. The present invention seeks to provide a recyclable packaging material by using an internal foamed film sheet according to Patent No. 293 5021, which was developed and patented earlier by the present inventors, instead of kraft paper. .

[0004]

[Means for Solving the Problems]

 One of the present inventions is a cloth in which polyethylene yarn is woven using warp yarns and weft yarns, and an inner foam film made of polyethylene resin is integrally attached to one surface of the cloth via a laminator made of polyethylene resin. A cloth woven using the other one of polypropylene yarns for warp and weft, and an internal foam film made of polypropylene resin adhered to one side of the cloth via a polypropylene resin laminator. It is a combination. At this time, the thickness of the internal foam film of polyethylene or polypropylene is about 5 to 100 microns.

[0005]

[Embodiment of the invention]

 FIG. 1 is a cutaway perspective view of a wrapping material according to the present invention, wherein 1 is a cloth woven using polyethylene yarns 1a and 1b for warp and weft, and 2 is one side of the cloth (the bottom in the illustrated example). Side) is an internal foam film made of polyethylene resin, which is attached using a laminator p made of polyethylene resin. Here, the internal foam film made of polyethylene resin is manufactured by the method proposed in Japanese Patent No. 2935021, and its thickness is about 5 to 100 microns.

FIG. 2 is a cutaway perspective view of another example, wherein 1 ′ is a cloth woven using polypropylene yarns 1′a and 1′b for warp and weft, and 2 ′ is one side of the cloth. This is an internal foam film made of polypropylene resin that is adhered to the bottom surface (in the illustrated example, using a laminator p ′) made of polypropylene resin. Here, the internally foamed film made of polypropylene resin is manufactured by the method proposed in Japanese Patent No. 2935021, and its thickness is about 5 to 100 microns.

In the above-mentioned internal foamed film made of polyethylene or polypropylene resin, three extruders are juxtaposed, and about 3 to 20% by weight of polyethylene or polypropylene resin raw material extruded from the central extruder. The foaming agent is mixed in and the resin for both extruders is supplied so as to be greater than that of the central extruder, and extruded from the die as a laminated resin film. Therefore, it can be manufactured simultaneously, continuously and at low cost.

[0008]

[Effect of the invention]

 The present invention is configured as described above, and the internally foamed resin film provides a packaging material having excellent tensile strength, bursting degree, and excellent flexibility which is not inferior to conventional kraft paper. It is excellent in workability. In addition, since it is made of the same material including cloth, it can be recycled.

[Brief description of the drawings]

FIG. 1 is a cutaway perspective view of a packaging material according to the present invention.

FIG. 2 is a cutaway perspective view of another example.

[Explanation of symbols]

 1,1 'cloth 1a, 1b polyethylene yarn 1'a, 1'b polypropylene yarn 2 internal foam film made of polyethylene resin 2' internal foam film made of polypropylene resin

Claims (3)

[Utility model registration claims] 1. A packaging material comprising a cloth woven by using polyethylene yarn for warp and weft, and an inner foam film made of polyethylene resin integrally bonded to one side of the cloth via a laminator made of polyethylene resin. 2. A packaging material comprising a cloth woven by using a polypropylene yarn for a warp yarn and a weft yarn, and an internal foam film made of a polypropylene resin integrally bonded to one surface of the cloth via a laminator made of a polypropylene resin. 3. The packaging material according to claim 1, wherein the thickness of the internal foam film of polyethylene or polypropylene is about 5 to 100 μm.