Injection molded element for slide fastener and slide fastener provided with same

Patent metadata

Field	Value
Publication number	US-10005210-B2
Application number	US-201314654626-A
Country	US
Kind code	B2
Filing date	Apr 22, 2013
Priority date	Apr 22, 2013
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

Provided is an injection molded element for a slide fastener which retains a high degree of practical strength, which does not cause undulation of a fastener tape after attachment thereto, and which has superior moldability. The present invention is an injection molded element for a slide fastener having as a material a polyamide resin composition containing a polyamide resin having a glass transition temperature from 40 to 70° C., the composition having a melt flow rate from 5 to 40 g/10 min, and containing from 40 to 60 parts by mass of the reinforcing fibers per 100 parts by mass in total of the polyamide resin and reinforcing fibers.

First claim

The invention claimed is:

1. An injection molded element for a slide fastener having as a material a polyamide resin composition containing a polyamide resin having a glass transition temperature from 40 to 70° C., the material excluding polyester resin,
the composition having a melt flow rate from 5 to 40 g/10 min measured at 280 degrees C. under a load of 2.16 kg according to JIS K 7210 (Method A), and containing from 40 to 60 parts by mass of reinforcing fibers per 100 parts by mass in total of the polyamide resin and reinforcing fibers.

2. The injection molded element according to claim 1 further containing a metal salt of a fatty acid having from 20 to 40 carbon atoms.

3. The injection molded element according to claim 2 , wherein the fatty acid salt is a montanic acid salt.

4. The injection molded element according to claim 2 , wherein the fatty acid salt content is from 0.1 to 2.0 parts by mass per 100 parts by mass in total of the polyamide resin and reinforcing fibers.

5. The injection molded element according to claim 1 , wherein the melt flow rate is from 10 to 20 g/10 min.

6. The injection molded element according to claim 1 , wherein the polyamide resin is at least one type selected from among Nylon 6 and Nylon 6, 10.

7. The injection molded element according to claim 1 , wherein the reinforcing fibers are at least one type selected from among glass fibers, carbon fibers, and aramid fibers.

8. A fastener chain comprising the injection molded element according to claim 1 .

9. A slide fastener comprising the injection molded element according to claim 1 .

10. An article comprising the slide fastener according to claim 9 .

Assignees

• Ykk Corp

Inventors

• Mizumoto Kazuya
• Matsumoto Hiroaki
• Kojima Masayoshi

Classifications

• B29C45/0001 Primary

  characterised by the choice of material · CPC title

• B29D5/02

  the fasteners having separate interlocking members · CPC title

• B29K2077/00

  Use of {PA, i.e.} polyamides, e.g. polyesteramides {or derivatives thereof}, as moulding material · CPC title

• B29K2105/12

  of short lengths, e.g. chopped filaments, staple fibres or bristles · CPC title

• B29C2045/0093

  of articles provided with an attaching element · CPC title