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Laminate and wound body

A technology of laminated body and winding body, applied in the direction of layered products, metal layered products, synthetic resin layered products, etc., can solve the problems of increasing the risk of water immersion, and achieve the effect of excellent storage and transportation.

Active Publication Date: 2019-05-03
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, for portable electronic devices, there are many chances of being exposed to rain and water in life, and the direction of the opening cannot be fixed in a fixed direction that can avoid water (for example, a downward direction that is not easy to blow into the rain), so Increased risk of water ingress

Method used

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  • Laminate and wound body
  • Laminate and wound body
  • Laminate and wound body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0106] Hereinafter, the present invention will be described in more detail through examples. The present invention is not limited to the following examples.

[0107] First, evaluation methods for the resin film, adhesive layer, and separator produced or prepared in this example, and the laminated body and wound body produced in this example will be described.

[0108] [thickness]

[0109] For the thickness of the resin film, separator, and both laminates (including the adhesive layer in Examples 1 to 8), Dial Upright Gauge R1-205 (manufactured by Ozaki Seisakusho; the diameter of the gauge Φ=5mm , Measuring force 1.1N or less) to measure. The measurement temperature was 25±2° C., and the measurement humidity was 65±20% RH.

[0110] [Tensile Strength]

[0111] The tensile strength (tensile breaking strength) of the resin film and separator was measured in accordance with the method prescribed in JIS K6251:2010. More specifically, the tensile tester used a table-top precisi...

manufacture example 1

[0127] (Manufacturing example 1: Production of resin film A)

[0128] 100 parts by weight of PTFE fine powder (manufactured by DAIKIN INDUSTRIES, Ltd., Polyflon PTFE F-104) and 20 parts by weight of n-dodecane (manufactured by Japan Energy Corporation) as a forming aid were uniformly mixed, and the resulting mixture was mixed using a cylinder. After compression, molding is carried out by plunger extrusion to form a sheet-like mixture. Next, the sheet-shaped mixture was passed through a pair of metal rolls, rolled to a thickness of 0.2 mm, and the molding aid was dried and removed by heating at 150° C. to form a strip-shaped PTFE sheet molded body. Next, the formed sheet molded product was stretched in the longitudinal direction (rolling direction) at a stretching temperature of 260° C. at a stretching ratio of 15 times to obtain a strip-shaped PTFE porous membrane (unfired).

[0129] Next, the obtained PTFE porous membrane was mixed with 20 parts by weight of a black dye (ORI...

manufacture example 2

[0132] (Manufacturing example 2: Production of resin film B)

[0133] 100 parts by weight of PTFE fine powder (manufactured by DAIKIN INDUSTRIES, Ltd., Polyflon PTFE F-104) and 20 parts by weight of n-dodecane (manufactured by Japan Energy Corporation) as a forming aid were uniformly mixed, and the resulting mixture was mixed using a cylinder. After compression, molding is carried out by plunger extrusion to form a sheet-like mixture. Next, the sheet-shaped mixture was passed through a pair of metal rolls, rolled to a thickness of 0.2 mm, and the forming aid was removed by heating at 150° C. to form a strip-shaped PTFE sheet molded body.

[0134] Next, the formed sheet molding was stretched in the longitudinal direction at a stretching temperature of 260° C. at a stretching ratio of 1.5 times, and then stretched in the width direction at a stretching temperature of 150° C. at a stretching ratio of 6.5 times. , to obtain a strip-shaped PTFE porous membrane (unfired). Next, th...

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Abstract

This laminate contains a resin film that functions as a waterproof breathable membrane and / or a waterproof sound-permeable membrane, and a separator. The resin film and the separator are bonded by anadhesive layer, and the peel surface formed when the separator is peeled off of the resin film is located between the resin film and the adhesive layer. The laminate can supply the resin film, which functions as a waterproof breathable membrane and / or a waterproof sound-permeable membrane, with a method of adhesion to an opening in a housing, and / or in a state in which the shape has a high degreeof freedom. This laminate can be supplied in the form of a wound body with excellent storability and transportability.

Description

technical field [0001] The present invention relates to a laminate comprising a resin film, and more specifically, to a laminate comprising a resin film functioning as a waterproof air-permeable membrane and / or a waterproof sound-permeable membrane. Background technique [0002] Housings for housing electronic circuit boards such as ECU (Electronic Control Unit) for vehicles and control boards for solar cells; housings for housing electronic equipment or components such as motors, light sources, and sensors Housings; casings of home appliances such as electric toothbrushes and razors; By ensuring air permeability, for example, a pressure difference generated between the inside and outside of the casing can be eliminated or reduced. In the opening, especially in the case where the items stored in the case are afraid of water, it is often equipped with a waterproof and air-permeable device that ensures air permeability between the inside and the outside of the case and preven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/06B32B27/00B32B27/30H04R1/00
CPCB32B7/06B32B27/00B32B27/30H04R1/00B32B3/266B32B5/024B32B7/12B32B15/095B32B15/18B32B15/20B32B27/08B32B27/304B32B27/322B32B27/32B32B27/281B32B27/36B32B27/365B32B27/40B32B27/308B32B27/283B32B27/10B32B2250/03B32B2307/10B32B2307/724B32B2307/7265B32B2439/40B32B2571/00H04R1/023B32B2307/748C09J7/29B32B7/08C09J2301/124
Inventor 井上健郎福岛玉青
Owner NITTO DENKO CORP
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