Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Patent
1995-07-11
1997-03-11
Loney, Donald
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
428120, 428167, 428174, 428192, 2961467, B32B 300, B60J 500
Patent
active
056099410
ABSTRACT:
An improved automotive door panel construction which includes a backing layer of vacuum formed plastic, with a padding layer of polyester fiber thereon, a layer of dry heat activated adhesive, and a covering layer with the layers joined around the perimeter of the panel in a formed trough between die members, to which radio frequency energy is applied to cause the adhesive and plastic to melt, and the layers to join together in a three dimensional dielectric seal. The outer covering is stretched during joining to remove wrinkles and provide an improved finished product.
REFERENCES:
patent: 3361610 (1968-01-01), Hannes
patent: 4245630 (1981-01-01), Lloyd et al.
patent: 4781956 (1988-11-01), Zimmerman et al.
Loney Donald
Wobensmith, III Zachary T.
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