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INJECTION MOLDING PROCESS AND PRODUCT PRODUCED USING THE SAME
专利权人:
Herve Pichot;Jean-Pierre T. Giraud
发明人:
Jean-Pierre T. Giraud,Herve Pichot
申请号:
US13809455
公开号:
US20140323981A1
申请日:
2011.07.15
申请国别(地区):
US
年份:
2014
代理人:
摘要:
A method of molding a solid article such as a syringe with zero draft or very low draft is disclosed. The method includes heating a low draft mold to expand it, then injection molding the part, followed by cooling at least part of the low draft mold element to thermally contract at least a portion of the low draft element away from the solid low draft formed surface sufficiently to release the low draft element from the low draft formed surface. Syringes and other articles formed by this method are also disclosed having and interior draft angle of 0 to 0.5 degrees, optionally at least substantially zero degrees. The syringe plunger can be selectively coated with lubricity coatings and other functional coatings to improve performance of the syringe.
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中国工程科技知识中心
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