Reverse lip blow molding
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United States of America Patent
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Apr 2, 1996
Issued Date -
N/A
app pub date -
Nov 14, 1994
filing date -
Oct 31, 1988
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention is directed to a blow molded article and an apparatus and method for blow molding the article. The article contemplated by the present invention includes a recessed lip. The apparatus includes two plates reciprocally movable toward and away from one another. A center ring member and a separating ring are fixedly and perpendicularly mounted on each plate. A mold half is mounted on each plate and is divided into two sections. One section is located on each side of the center ring member and is reciprocally movable toward and away from the center ring member. A first insert member is provided in each mold section in proximity to said center insert member. The first insert has a channel therein for receiving a second insert member. The second insert member is reciprocally movable in said channel and engages the center ring member. The movement of the second insert member is synchronized with respect to the first insert member to move at a speed that is at least half the speed of the first insert. The recessed lip is molded between said center ring members, the first insert member and the second insert member.
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