Carvable novelty articles and methods

Stock material or miscellaneous articles – Three dimension imitation or 'treated' natural product – Flora

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428 21, 428 365, 446385, 264 51, 264 53, 264 54, 156 61, A41G 100

Patent

active

053976096

ABSTRACT:
The invention is in the field of three-dimensional hollow novelty items and their manufacture, particularly items such as artificial pumpkins that the consumer desires to carve or alter after purchase. Disclosed is a carvable novelty article, such as an artificial Hallo-ween pumpkin, comprising a polyurethane shell substantially surrounding an interior volume and having a thin, elastomeric coating, such as an acrylic, on the exterior surface of the shell. The carvable article can be formed by an inventive process in which polyurethane foam material, such as material having a nominal density of about 2.5-3.0 pounds per cubic foot, is sprayed from a nozzle rotating with respect to the inside of a mold. After the polyurethane foam article and the mold are separated, the article is coated with an elastomeric coating, such as an acrylic material that is applied as a liquid. Thus, the inventive articles, including those made in accordance with the inventive process, can be used as three-dimensional hollow novelty items of a variety of shapes. In addition, the inventive articles, such as Halloween pumpkins, are carvable, reusable, and can be used with a light source.

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Graco Plural Component Propotioning Systems, Apr. 1992.
SWD Urethane Company, SWD-115/250 Spray Foam Product Information Sheet, Dec. 1991.
Kashiwagi et al., "Performance Analysis of GE Silicone Coated Polyurethane Foam Systems", Arizona State University College of Engineering Article No. CDS4624 (May 1991).
Resin Technology Co., Guide Specification for Urethane Foam Roofing System, Sep. 1982.
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Gemmy Industries, Artificial Pumpkin Product (Nov. 1992).

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