Foamed dustproof material and dustproof structure using foamed dustproof material

A technology of dustproof and foamed body, applied in the field of foamed dustproof material and dustproof structure, can solve the problem of unnecessary consideration of the compression and repulsion force of dustproof material, and achieve the effect of good flexibility and good dustproof performance.

Active Publication Date: 2005-05-25
NITTO DENKO CORP
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is not necessary to consider the compression repulsion force of the dustproof material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Foamed dustproof material and dustproof structure using foamed dustproof material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] 45 parts by weight of polypropylene, 45 parts by weight of polyolefin elastomer, 10 parts by weight of polyethylene, 10 parts by weight of magnesium hydroxide, and 10 parts by weight of carbon were prepared in a double It was kneaded at a temperature of 200° C. in a shaft kneader and extruded into strands, which were then cooled with water and molded into pellets. The pellets were placed in a single-screw extruder manufactured by Japan Steel Works Co., Ltd., and carbon dioxide gas was injected into the extruder at a pressure of 13 MPa in an environment of 220° C., and the pressure was lowered to 12 MPa after the injection was completed. .

[0120]Carbon dioxide gas was injected at a rate of 5% by mass based on the total amount of the polymer. After being sufficiently saturated with carbon dioxide gas, the mixture is cooled to a temperature suitable for foaming, and then extruded from a die to obtain a foamed body. The foam thus obtained has an average pore diameter of...

Embodiment 2

[0122] 30 parts by weight of polypropylene, 60 parts by weight of polyolefin elastomer, 10 parts by weight of polyethylene, 10 parts by weight of magnesium hydroxide, and 10 parts by weight of carbon in a twin-screw kneader manufactured by Japan Steel Works Co., Ltd. kneaded at a temperature of 200° C., and extruded into strands, which were then cooled with water and granulated. The pellets were placed in a single-screw extruder manufactured by Japan Steel Works Co., Ltd., and carbon dioxide gas was injected into the extruder at a pressure of 13 MPa in an environment of 220° C., and the pressure was lowered to 12 MPa after the injection was completed. .

[0123] Carbon dioxide gas was injected at a rate of 5% by mass based on the total amount of the polymer. After being sufficiently saturated with carbon dioxide gas, the mixture is cooled to a temperature suitable for foaming, and then extruded from a die to obtain a foamed body. The foam thus obtained has an average pore di...

Embodiment 3

[0125] 60 parts by weight of polypropylene, 30 parts by weight of polyolefin elastomer, 10 parts by weight of polyethylene, 10 parts by weight of magnesium hydroxide, 10 parts by weight of carbon and 1 part by weight of monoglyceride stearate in a It was kneaded at a temperature of 200° C. in a twin-screw kneader manufactured by Japan Steel Works Co., Ltd., and extruded into a strand, which was then cooled with water and pelletized. The pellets were placed in a single-screw extruder manufactured by Japan Steel Works Co., Ltd., and carbon dioxide gas was injected into the extruder at a pressure of 13 MPa in an environment of 220° C., and the pressure was lowered to 12 MPa after the injection was completed. .

[0126] Carbon dioxide gas was injected at a rate of 5% by mass based on the total amount of the polymer. After being sufficiently saturated with carbon dioxide gas, the mixture is cooled to a temperature suitable for foaming, and then extruded from a die to obtain a foam...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
densityaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

A foamed dustproof material which comprises a foamed body, wherein the foamed body has an average cell diameter of from 10 to 90 mu m, a load against repulsion upon compressing to 50% of from 0.1 to 3.0 N / cm<2>, and an apparent density of from 0.01 to 0.10 g / cm<3>. <IMAGE>

Description

field of invention [0001] The present invention relates to a foamed dustproof material and a dustproof structure using the foamed dustproof material, and more particularly to a dustproof material which has excellent dustproof performance and can successfully follow tiny gaps, and a The dustproof structure adopts the foamed dustproof material. Background technique [0002] Dust-proof materials have been used to mount image display members fixed to image display devices such as liquid crystal displays, electroluminescent displays, and plasma displays, and optical members such as cameras and lenses fixed to portable phones or portable information devices to, for example, fixed parts at the specified location. Dustproof materials have also been used to prevent toner leakage from toner cartridges used in image forming apparatuses such as copiers and printers. [0003] As the dustproof material, a polyethylene foam with closed cells and an expansion coefficient of about 30, a fi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B32B3/00B32B3/26B32B9/00C08J9/00C08J9/08C08J9/12C09J7/02C09K3/22G02F1/1339H01H1/10
CPCC08J9/0061C08J9/122C08J2201/03C08J2201/032C08J2203/08C08J2323/14C08J2423/00Y10T428/249979Y10T428/249978Y10T428/249976Y10T428/249977Y10T428/249953Y10T428/249987C09J7/38C09J7/26
Inventor 斋藤诚高桥伸幸橘克颜
Owner NITTO DENKO CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap