Resin foam and foamed member

A technology of resin foam and components, which is applied in the direction of synthetic resin layered products, transportation and packaging, chemical instruments and methods, etc., can solve the problems of changing the physical properties of foam and complex production processes, etc., and achieve excellent processability, The effect of preventing foam breakage and high flexibility

Active Publication Date: 2011-11-09
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These are all foams in which different materials are laminated on top of the foam, which may change the physical properties of the foam or complicate the production process

Method used

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  • Resin foam and foamed member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0123] Using a twin-screw extruder manufactured by Japan Steel Works (Japan Steel Works, Ltd.,) (JSW), at 200°C, 40 parts by weight of polypropylene [melt flow rate (MFR): 0.35g / 10min ], 55 parts by weight of polyolefin-based elastomer [melt flow rate (MFR): 6g / 10min, JIS hardness A: 79°], 6 parts by weight of carbon black (trade name "Asahi#35", produced by Asahi Carbon produced by the company) and 10 parts by weight of magnesium hydroxide (average particle diameter: 0.7 μm) as a powder flame retardant are kneaded, then extruded into strips, water-cooled, and formed into pellets. The softening point of the pellets is 155°C and the density of the pellets is 0.95 g / cm 3 .

[0124] The pellets were charged into a single-screw extruder manufactured by Nippon Steel Works, and carbon dioxide gas was injected under a pressure of 22 (19 after injection) MPa in an environment of 220°C. After the carbon dioxide is fully saturated, the pellets are cooled to a temperature suitable for ...

Embodiment 2

[0129] One surface of the resin foam (A) was subjected to surface heat fusion treatment in the same manner as in Example 1 except that the resin foam (A) was brought into contact with the heat roll for 7.0 seconds. As a result, a resin foam having a surface with a 60° gloss value of 2.6 was obtained.

Embodiment 3

[0131] In the same manner as in Example 1, except that the resin foam (A) was brought into contact with the heat roll for 4.2 seconds, one surface of the resin foam (A) was subjected to surface heat fusion treatment. As a result, a resin foam having a surface with a 60° gloss value of 2.4 was obtained.

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Abstract

The present invention relates to a resin foam having a resin compositional homogeneity throughout the entirety from a surface to an inside thereof, having a surface with a 60 DEG gloss value based on JIS Z 8741 (1997) of 1.5 or more, and having a 25% compressive load based on JIS K 6767 (1999) of 2.00 N / cm2 or less.

Description

technical field [0001] The present invention relates to a device suitable for use in electric or electronic equipment, having excellent flexibility and the ability to suppress breakage of foam when it is peeled off from a carrier tape, and exhibiting excellent processability in a state held on the carrier tape , a transportable and installable resin foam; and a foam member including the resin foam. technical background [0002] Generally, the resin foam is punched into a desired shape according to the shape of the member used, or the surface of the resin foam is subjected to pressure-sensitive adhesive processing for easier holding on the member. Representative examples of the processed shape include a window frame-like shape (eg, outer frame: 80 mm×50 mm, line width: 1 mm) in which the surface of the resin foam is subjected to pressure-sensitive adhesive processing. However, the resin foam subjected to such processing is difficult to handle, and a carrier tape is sometimes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/00C08J9/12C09J7/02B32B27/06B32B7/12C09J7/29
CPCC08J2323/00C08J9/36C08J2203/08C09J2201/162B32B2266/025C09J7/0296C08L23/10C08J2205/05C08J9/122C08L2203/14C09J2201/606B32B2405/00B32B5/18C08L23/16C09J2400/243C09J7/0289C08L23/00C08L2205/02C08L23/12C08K3/01C08K3/04C08K2003/2224B32B7/04B32B7/12B32B2266/0221B32B2266/0257B32B2266/0278B32B2274/00B32B2307/102B32B2307/406B32B2307/546B32B2307/56B32B2307/732B32B2457/00C09J7/26C09J7/29Y10T428/28C09J2301/162C09J2301/302C08J9/0061
Inventor 畑中逸大斋藤诚加藤和通儿玉清明
Owner NITTO DENKO CORP
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