Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing
Patent
1989-08-28
1992-07-28
Robinson, Ellis P.
Stock material or miscellaneous articles
Hollow or container type article
Polymer or resin containing
428 361, 428192, 428 33, 249112, 249 83, 249 97, 249160, 425 89, 425389, 425398, 425346, B29C 3338, B28B 736, B22D 1904
Patent
active
051340020
ABSTRACT:
A preform assembly for use with a resin transfer molding apparatus. The preform assembly comprises an upper liner formed to the shape of a first mold half, the upper liner having a peripheral portion, a dry fabric preform, and a lower liner formed to the shape of a second mold half, the lower liner having a peripheral portion. The preform is sandwiched between the upper liner and lower liner to form the preform assembly having peripheral portions which extend beyond the preform to form a sealing area. The upper liner is sealed to the lower liner at the sealing area. The preform assembly facilitates the loading of the preform into a molding apparatus as well as facilitating the handling and storage of the preform prior to and subsequent to molding. Methods of making the preform assembly, as well as a composite article, are also disclosed.
REFERENCES:
patent: 2336578 (1940-07-01), Skoning
patent: 3135640 (1964-06-01), Kepka et al.
patent: 4942013 (1990-07-01), Palmer et al.
Nold Charles R.
Robinson Ellis P.
United Technologies Corporation
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