Mesh structure

Patent metadata

Field	Value
Publication number	US-2016361902-A1
Application number	US-201615178789-A
Country	US
Kind code	A1
Filing date	Jun 10, 2016
Priority date	Jun 10, 2015
Publication date	Dec 15, 2016
Grant date	—

Abstract

Provided is a lightweight mesh nonwoven fabric having excellent adhesiveness between uniaxially oriented bodies, excellent low-temperature heat sealability, and high strength. A mesh structure 1 includes two or more uniaxially oriented bodies 2, 3 ; which include a thermoplastic resin layer and a linear low-density polyethylene layer laminated on at least one side of the thermoplastic resin layer; the mesh structure is produced by laminating or weaving the uniaxially oriented bodies through the linear low-density polyethylene layer in such a way that orientation axes L, T of the uniaxially oriented bodies cross; and the mesh structure has properties of:
(1) a fiber weight per unit area of 5 to 70 g/m2, (2) a thickness of the linear low-density polyethylene layer of 2 to 10 μm, (3) an adhesive force between the uniaxially oriented bodies of 10 to 60 N, and (4) a tensile strength of 20 to 600 N/50 mm.

First claim

1 . A mesh structure comprising:
two or more uniaxially oriented bodies, wherein one of the uniaxially oriented bodies includes a thermoplastic resin layer and a first linear low-density polyethylene layer laminated on at least one side of the thermoplastic resin layer, the mesh structure being produced by laminating or weaving the two or more uniaxially oriented bodies through the first linear low-density polyethylene layer in such a way that orientation axes of the two or more uniaxially oriented bodies cross, the mesh structure having properties of: (1) a fiber weight per unit area of 5 to 70 g/m 2 , (2) a thickness of the first linear low-density polyethylene layer of 2 to 10 μm, (3) an adhesive force between the uniaxially oriented bodies of 10 to 60 N, and (4) a tensile strength of 20 to 600 N/50 mm.

2 . The mesh structure according to claim 1 , wherein the thermoplastic resin layer contains a high-density polyethylene having a melting point higher than a melting point of the first linear low-density polyethylene layer.

3 . The mesh structure according to claim 1 , wherein the one of the uniaxially oriented bodies is produced by uniaxially stretching a multilayer film prepared by inflation molding.

4 . The mesh structure according to claim 1 , wherein the first linear low-density polyethylene layer contains a linear low-density polyethylene prepared by polymerization with a metallocene catalyst.

5 . The mesh structure according to claim 1 , wherein the first linear low-density polyethylene layer contains a linear low-density polyethylene having a long-chain branch in a molecular chain thereof.

6 . The mesh structure according to claim 1 , wherein the one of the uniaxially oriented bodies includes a second linear low-density polyethylene layer laminated on another side of the thermoplastic resin layer, and the first and second linear low-density polyethylene layers contain a linear low-density polyethylene having an MFR of 0.5 to 10 g/10 min and a density of 0.910 to 0.940 g/cm 3 .

7 . The mesh structure according to claim 1 , wherein the two or more uniaxially oriented bodies are at least one of a uniaxially oriented mesh film or uniaxially oriented tapes.

Assignees

• Jx Nippon Oil & Energy Corp

Inventors

• Ibayashi Kunihiko
• Ito Hisao

Classifications

• B32B2439/06

  Bags, sacks, sachets · CPC title

• B32B27/32

  comprising polyolefins {(comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30)} · CPC title

• B29K2023/0633

  LDPE, i.e. low density polyethylene · CPC title

• B32B27/327

  comprising polyolefins obtained by a metallocene or single-site catalyst · CPC title

• B32B2307/542

  Shear strength · CPC title