Bead foam compression molding method with in situ steam generation for low density product
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-044/04
B32B-005/24
B29D-035/12
B29C-035/04
A43B-013/04
A43B-017/14
A43B-023/02
C08J-009/232
B29K-021/00
B29K-075/00
출원번호
US-0765273
(2013-02-12)
등록번호
US-9144956
(2015-09-29)
발명자
/ 주소
Schiller, Denis
Yu, Sui-Chieh J.
Baghdadi, Hossein A.
출원인 / 주소
NIKE, Inc.
대리인 / 주소
Honigman Miller Schwartz & Cohn LLP
인용정보
피인용 횟수 :
0인용 특허 :
5
초록▼
Disclosed is a method for molding a foamed article, such as a midsole or outsole for footwear, in which first water, then a desired amount of thermoplastic polyurethane foam beads are placed in a compression mold in the shape of the article and the mold is brought to a peak temperature of from about
Disclosed is a method for molding a foamed article, such as a midsole or outsole for footwear, in which first water, then a desired amount of thermoplastic polyurethane foam beads are placed in a compression mold in the shape of the article and the mold is brought to a peak temperature of from about 130° C. to about 180° C. over a period of from about 300 to about 1500 seconds, then cooled to from about 5° C. to about 80° C. over a period of from about 300 to about 1500 seconds within about 30 seconds after the peak temperature is reached. The foamed article made by the method has a density of from about 0.1 to about 0.45 g/cm3.
대표청구항▼
1. A method for molding a foamed article, comprising: placing an amount of water in a compression mold in the shape of an article;then placing a desired amount of thermoplastic polyurethane foam beads in the compression mold, wherein the thermoplastic polyurethane foam beads have a density of from a
1. A method for molding a foamed article, comprising: placing an amount of water in a compression mold in the shape of an article;then placing a desired amount of thermoplastic polyurethane foam beads in the compression mold, wherein the thermoplastic polyurethane foam beads have a density of from about 0.01 to about 0.3 g/cm3 and wherein 1 part by weight water per from about 1.5 to about 20 parts by weight of the thermoplastic polyurethane foam beads is used;closing the mold;bringing the mold to a peak temperature of from about 130° C. to about 180° C. over a period of from about 300 to about 1500 seconds;cooling the mold to a temperature of from about 5° C. to about 80° C. over a period of from about 300 to about 1500 seconds within about 30 seconds after the peak temperature is reached; andremoving the article. 2. A method according to claim 1, wherein 1 part by weight water per from about 3 to about 12 parts by weight of the thermoplastic polyurethane foam beads is used. 3. A method according to claim 1, wherein the peak mold temperature is from about 140° C. to about 170° C. 4. A method according to claim 1, wherein the thermoplastic polyurethane foam beads have a density of from about 0.01 to about 0.1 g/cm3. 5. A method according to claim 1, wherein the thermoplastic polyurethane foam beads comprise a thermoplastic polyurethane with a melt flow index of at least about 160 grams/10 min. (at 190° C., 21.6 kg) as measured according to ASTM D1238. 6. A method according to claim 1, wherein the thermoplastic foam beads comprise an elastomeric thermoplastic polyurethane with a melt flow index of from about 180 to about 250 grams/10 min. (at 190° C., 21.6 kg) as measured according to ASTM D1238. 7. A method according to claim 1, wherein the thermoplastic polyurethane foam beads comprise an elastomeric thermoplastic polyurethane selected from the group consisting of thermoplastic polyester-polyurethanes, polyether-polyurethanes, and polycarbonate-polyurethanes. 8. A method according to claim 1, wherein the thermoplastic polyurethane foam beads comprise at least one of an elastomeric thermoplastic polyester-polyurethane and an elastomeric thermoplastic polyether-polyurethane. 9. A method according to claim 8, wherein the thermoplastic polyurethane foam beads comprise at least an elastomeric thermoplastic polyether-polyurethane that is a reaction product of diphenylmethane diisocyanate. 10. A method according to claim 1, wherein the thermoplastic polyurethane foam beads have a diameter of from about 0.5 mm to about 1.5 cm. 11. A method according to claim 1, wherein the thermoplastic foam beads have a compact outer skin. 12. A method according to claim 1, wherein the thermoplastic foam beads and the mold are each at a temperature below about 80° C. 13. A method according to claim 1, wherein the amount of the thermoplastic polyurethane foam beads placed in the mold is selected to provide a foamed article having a density of from about 0.1 to about 0.45 g/cm3. 14. A method according to claim 1, wherein the mold is brought to the peak temperature over a period of from about 300 to about 1200 seconds. 15. A method according to claim 1, wherein the peak temperature is selected to produce a skin thickness of from about 9 to about 200 micrometers. 16. A method according to claim 1, wherein the mold is cooled over a period of from about 300 to about 1200 seconds. 17. A method according to claim 1, wherein the mold cooling step is begun immediately after the peak temperature is reached. 18. A method according to claim 1, wherein the mold is cooled at a rate of from about 0.09 to about 0.55° C./second.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (5)
Lichter Seymour (137 Fairway Dr. New Castle IN 47362) Nold Frank P. (Rte. 2 ; Box 60 New Castle IN 47362), Composite foamed material.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.