Rotationally molding an insulated plastic molded door with integral hinge
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 2, 1997
Issued Date -
N/A
app pub date -
Feb 14, 1996
filing date -
Sep 1, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A high impact resistant rotationally molded door and process for molding the door is disclosed in which a hinge member is integrally molded to the door along one edge only. This hinge member forms to the hollow door edge without door warpage during curing and shrinking of rotationally molded plastic door body. Door warpage is avoided by delaying full integral attachment of the hinge member to the door until curing of the injected foam interior which both bonds to the interior of the door and the hinge member. An improved seal and hinge seal is disclosed together with a placed window construction that can include both placement and shaping to meet the special order needs. Further improvements including the expedient of venting a rotationally molded door during the rotational molding process through an integrally molded hinge edge reinforcing member. This same venting scheme is utilized for enabling improved cooling of the door once molding of the hollow door shell has occurred. Further, the rotationally molded door keys with improved efficiency to subsequently injected foam at the manifold outlets.
First Claim
Other Claims data not available