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Composite molded article and method of making a composite molded article

A molded product and product technology, applied in the field of composite molded products, can solve problems such as structural damage of composite material components, emission of harmful gas pollutants, tarnished appearance, etc.

Inactive Publication Date: 2006-03-01
VEC INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This approach results in unwanted emissions of harmful gaseous pollutants during application
[0009] Boat hulls, engine parts or motor homes, tubs, tub surrounds and whirlpool spas that have a gel coat finish tend to lose their glossy appearance and become dull due to wear and / or exposure to sunlight from everyday use. light surface, and "orange peel" microcracks can appear, which eventually lead to structural failure of composite components

Method used

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  • Composite molded article and method of making a composite molded article
  • Composite molded article and method of making a composite molded article
  • Composite molded article and method of making a composite molded article

Examples

Experimental program
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Embodiment

[0080] Representative examples of composite materials made in accordance with the present invention are as follows. An acrylic / ABS sheet measuring 3.8 mm x 1650 mm x 2030 mm, sold under the trade designation DR / GX 3800 from Spartech, Clayton, MO, was mounted on a rotary thermoforming apparatus. The acrylic surface is a decorative surface and the sheet is thermoformed such that the acrylic surface is the outer surface of the final article. The sheet is preheated and heated at a temperature of from about 320°F to about 370°F. The sheet is heated until the proper forming temperature is reached, at which point the sheet begins to bow and sag. The sheet must be softened to obtain an initial preformed shape that allows the manipulated sheet to fit into the mold without gaps, wrinkles, or other surface defects. A forming master heated to about 170°F is brought into contact with the softened sheet and a vacuum is applied. The sheet is formed into the main mold shape. The shaped sh...

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Abstract

The invention relates to composite molded articles having a smooth, attractive thermoplastic surface. The invention also relates to a method having improved efficiency and reduced emission of hazardous air pollutants for making composite molded articles comprising a composite fiber reinforcement, thermosetting resin material having a thermoplastic exterior layer. The method comprises the steps of: (a) placing in a spaced apart relationship a first mold half comprising a first shaped ,mold membrane (5) and a second mold half (3) comprising a second shaped mold membrane (7) wherein the first and second shaped mold membranes define a mold plenum when brought together to mold articles; (b) placing a thermoplastic sheet (25) in the mold plenum wherein the shape of the thermoplastic sheet substantially conforms to the shape of the mold membrane; (c) placing reinforcement material (33) in the mold plenum; (d) closing the first and second mold halves such that the thermoplastic sheet.

Description

[0001] This application was filed as a PCT International Patent Application on January 23, 2004, in all countries except the United States with VEC Technologies, Inc., a U.S. state-owned enterprise, as the named applicant, and in the United States only with Robert P. McCollum, a U.S. citizen, and Shiraz Sidi, a Canadian citizen , US citizens Jeffrey J.O'Hara and Richard Eugene Clark as designated applicants. technical field [0002] The present invention relates to composite moldings having a smooth and aesthetically pleasing surface. More specifically, the present invention relates to combining materials in a mold to obtain a composite article with a smooth surface. The invention also relates to a method of making a composite molded article comprising a reinforced thermoset material with a thermoplastic outer layer, which method increases efficiency and reduces emissions of hazardous air pollutants. Background technique [0003] The present invention relates to composite m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/48B29C70/08B29C51/00B29C70/86B32B27/04B32B27/30B29C51/04B29C70/44B29C70/54B32B5/18B32B27/08B32B27/40
CPCB29C51/00Y10T428/31855B29C51/04Y10T428/24603B29C70/443B32B27/08B32B5/18B29C70/542Y10T428/31504B32B27/30B29C2791/001B29L2009/00B29C70/48B29C70/086B32B27/40
Inventor 罗伯特·P·麦科勒姆希拉兹·西迪杰弗里·J·欧哈拉理查德·尤金·克拉克
Owner VEC INDS
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