Title: Building a lamination of fiberglass reinforced polyester resin on a rotating mandrel

Abstract: The invention is a process for building a lamination of a fiberglass reinforced polyester resin on a rotating continuous belt forming a spirally rotating mandrel consisting of pouring resin on the top of the mandrel from a substantially horizontal surface, depositing chopped strands of fiberglass onto the surface of the resin and impressing the chopped fiberglass into the resin with parallel strands of a suitable material. The specific method of pouring the resin onto the mandrel surface and the application of chopped fiberglass and parallel strands are also part of the invention.

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Inventors: Leroux, Pierre J. (Angleur, BE)
DE Schilde, D. van de Werve (Angleur, BE)

Application Number: 325826
Filing Date: 1973-01-22
Publication_date: 1976-03-30
Assignee: The Standard Oil Company (Cleveland, OH)
Primary Class(es): 156/62.4 156/173, 156/431
Other Classes:
US Patent Ref:

2614058	Oct, 1952	Francis	156/175.
2656873	Oct, 1953	Stephens	156/175.
2927623	Mar, 1960	Huisman et al.	156/200.
3379591	Apr, 1968	Bradley	156/173.
3464879	Sep, 1969	Poulsen	156/429.
3655468	Apr, 1972	Bastone et al.	156/62.
3716431	Feb, 1973	Townsend et al.	156/62.

Other Refs:
Primary Examiner: Fritsch, Daniel J.
Assistant Examiner:
Attorney: Knudsen; Herbert D.