Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Reexamination Certificate
2011-04-12
2011-04-12
Del Sole, Joseph S (Department: 1743)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
C264S325000, C264S347000, C264S259000, C092S1030SD, C092S096000
Reexamination Certificate
active
07922955
ABSTRACT:
A method for producing a rubber diaphragm, comprising: (a) preparing materials; (b) primary forming: putting a first rubber film into a lower mold cavity of a diaphragm mold, covering the film with a canvas, positioning the canvas via a mold ring, switching on a primary upper mold on a vulcanizer, pushing the mold into a center of a hot plate of the vulcanizer, and performing primary forming for 30-40 seconds under a setting temperature of 152-157° C. and holding pressure of 16-18 MPa; and (c) secondary forming and curing: taking the mold out, removing the upper mold, putting the second rubber film into a mold cavity and switching on a secondary upper mold, pushing the mold into a center of the hot plate, and performing secondary forming and curing for 5-5.5 minutes under a setting temperature of 152-157° C. and holding pressure of 16-18 MPa. A rubber diaphragm produced by this method.
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Qin Binghong
Tang Qichao
Yang Zhenxin
Zhu Xianqiao
Del Sole Joseph S
Matthias Scholl P.C.
Scholl Matthias
Sultana Nahida
Zhu Xianqiao
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