发明名称 |
Vibratory molding process and product |
摘要 |
A fastener strip is disclosed having a permanently sealed, airtight portion and a reclosable portion capable of maintaining an airtight seal when closed. The permanently sealed portion is generally planar and essentially impervious to air flow. The reclosable portion includes a ridge and a trough joined at their adjacent ends to a plug, which prevents air from leaking from the adjacent end of the reclosable portion. Additionally, a dam joins the plug to the first backing in an essentially airtight seal, and joins the plug to the second backing in an essentially airtight seal. A method and apparatus for sealing portions of a thermoplastic fastener strip are also disclosed. A method is additionally disclosed for vibrating and molding thermoplastic materials in which a flow of malleable thermoplastic material is initiated and molded with an effectively dimensioned vibrator that is unitary with a first matrix for guiding and molding the malleable polymer. |
申请公布号 |
US2004128806(A1) |
申请公布日期 |
2004.07.08 |
申请号 |
US20030337139 |
申请日期 |
2003.01.07 |
申请人 |
WRIGHT DONALD K.;PEMBERTON CHRISTOPHER L.;HANKINS JAMES KENDALL |
发明人 |
WRIGHT DONALD K.;PEMBERTON CHRISTOPHER L.;HANKINS JAMES KENDALL |
分类号 |
B29C65/00;B29C65/08;B29C67/00;(IPC1-7):A44B21/00;A44B17/00 |
主分类号 |
B29C65/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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