Method for making laminate

Patent metadata

Field	Value
Publication number	US-9321199-B2
Application number	US-201313951948-A
Country	US
Kind code	B2
Filing date	Jul 26, 2013
Priority date	Feb 9, 2007
Publication date	Apr 26, 2016
Grant date	Apr 26, 2016

Abstract

A method of insert molding comprises placing in a first mold a curable rubber composition comprising a reactive species; placing on a surface of the rubber composition a first thermoplastic material in a film or layer comprising a group reactive with the reactive species of the rubber composition; curing the rubber composition in the mold to form a first molded article of cured rubber having a first thermoplastic material layer covalently bonded through reactive of the reactive species and the group; placing the first molded article as an insert into a second mold, the cured rubber contacting an inside surface of the second mold and the thermoplastic layer facing into the second mold cavity; closing the second mold and injecting into the second mold a second thermoplastic material that to form a second molded article comprising the first molded article thermally welded and/or covalently bonded to the second thermoplastic material.

First claim

What is claimed is:

1. A method of preparing a molded article, comprising
placing in a mold a rubber insert comprising a rubber on which is a surface layer comprising a thermoplastic elastomer, wherein a group in the surface layer is covalently bonded to the rubber and wherein the surface layer of the insert extends into a mold cavity;
closing the mold and injecting into the mold a thermoplastic material; and
cooling the thermoplastic material to form a molded article comprising the insert.

2. A method according to claim 1 , wherein the covalent bond is between a polymer of the rubber and the surface layer.

3. A method according to claim 1 , wherein the covalent bond is between a coupling agent of the surface layer and the rubber.

4. A method according to claim 1 , wherein the rubber is foamed.

5. A method according to claim 1 , wherein the surface layer is at least about 0.05 mm thick and up to about 1 mm thick.

6. A method according to claim 1 , wherein the thermoplastic elastomer comprises a member selected from the group consisting of styrene-butadiene-styrene block copolymers, styrene-ethylene butylene-styrene block copolymers, ether-amide block copolymers, polyurethanes, and combinations thereof.

7. A method according to claim 1 , wherein the thermoplastic material comprises a member selected from the group consisting of polyurethanes, polyamides, polyether-polyamide copolymers, ethylene-vinyl alcohol copolymers, SEBS, SBS, PEEK, ABS, poly(ester-imide) copolymers, polyesters, ester-ether block copolymers, and combinations thereof.

8. A method according to claim 1 , wherein the thermoplastic material is melt fused, welded, or covalently bonded to the surface layer.

Assignees

• Nike Inc

Inventors

• Stone N Spencer
• Yu Sui-Chieh
• Schiller Denis
• Krstic Ruzica

Classifications

• B29K2067/06

  Unsaturated polyesters · CPC title

• B29K2075/00

  Use of {PU, i.e.} polyureas or polyurethanes {or derivatives thereof}, as moulding material · CPC title

• A43B13/122

  characterised by the outsole or external layer · CPC title

• B29D35/0009

  by injection moulding; Apparatus therefor · CPC title

• B29C45/14811

  Multilayered articles (B29C45/14827 takes precedence) · CPC title