Paint brush with co-injection molded handle and method of making same
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United States of America Patent
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Jul 13, 1999
Grant Date -
N/A
app pub date -
Aug 17, 1995
filing date -
Aug 17, 1995
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A paint brush handle has an outer layer of a comfortable, relatively soft elastomeric material that surrounds a rigid core of foamed polyolefin. The handle is made using a co-injection process in which a mold cavity is first coated by an initial partial shot of the elastomeric material and then filled by injecting more elastomeric material and polyolefin material containing a foaming agent simultaneously. The simultaneous shot of these materials is achieved by injecting the materials through a single inlet passage into the mold cavity in which the flows are concentric, with the elastomeric material surrounding the polyolefin material. The ferrule is attached to the handle using nails or other suitable fasteners which penetrate into the rigid inner core.
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Family
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Cited Art Landscape
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