Alphonse DeMarco,Gregory J. Wideman,Peter S. Lortscher,Austin N. Pickett,Mark M. Mleziva,Garry R. Woltman,Michael G. Shlepr
申请号：
US15774619
公开号：
US20190366602A1
申请日:
2017.11.17
申请国别(地区):
US
年份:
2019
代理人:
摘要：
A method for forming an injection-molded part includes applying a coating to a mold cavity； maintaining a water-dispersible, thermoplastic composition at a temperature between 170° C. and 190° C., wherein the thermoplastic composition comprises partially-hydrolyzed polyvinyl alcohol (PVOH), polyethylene glycol (PEG), plasticizer, and a hydrophobic polymeric component, wherein the composition has a melt flow rate of from 40 grams per 10 minutes to 160 grams per 10 minutes when subjected to a load of 2160 grams at a temperature of 190° C. according to ASTM Test Method D1238-E； injecting the thermoplastic composition into the mold cavity； shaping the thermoplastic composition into a molded part within the mold cavity； and maintaining the mold temperature at less than 20° C.
