Method for the production of manufactured articles of resin or c

Details Method for the production of manufactured articles of resin or c Method for the production of manufactured articles of resin or c

1992-04-24

1993-10-12

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Carbonizing to form article

Agglomeration or accretion

264255, 264258, 264347, 4251744, B29C 3508

Patent

active

052522652

ABSTRACT:
A technique is described for the production of manufactured articles of composite material of large thickness, the matrix of which is composed of polymerizable resins, using electron beams. To achieve the polymerization of the matrix, it is proposed to induce the adhesion of the resin of a layer (1) of already polymerized material with the resin of a second layer (3) to be polymerized by irradiating the second layer and the zone of adhesion between the first and the second layer with electron beams (F) of appropriate energy. The method can also be used for the welding of a plurality of layers or portions of already polymerized material. This permits the polymerization of matrices of such a thickness as not to be penetrated in a single phase by electron beams of limited energy. The treatment by successive phases performs the polymerization of the resin matrix in a manner equivalent to a simultaneous treatment over the entire thickness.

REFERENCES:
patent: 2668133 (1954-02-01), Brophy et al.
patent: 3658620 (1972-04-01), Hall
patent: 4361606 (1982-11-01), Butler et al.
patent: 4571316 (1986-02-01), Naruse et al.
patent: 4699846 (1987-10-01), Ohya et al.
patent: 4789505 (1988-12-01), Beziers
patent: 5063005 (1991-11-01), Doheny, Jr.

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