Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1975-04-01
1977-11-15
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
40125E, 40136, 156 69, 156288, 264255, 264267, 264268, 264308, 264320, B29H 900
Patent
active
040585840
ABSTRACT:
A method for manufacturing luminous hollow bodies to be used in signs or the like. The luminous hollow bodies are molded in such a way that first an endless side wall thereof is molded and then an end wall is molded at one end of the space confined by the endless side wall. The endless side wall is made up of a plurality of layers which give the final hollow body desired properties of light-transmission, strength, and the like. These layers while still in a soft moldable condition are placed around an inner mold member and are surrounded by an outer mold member made up of a plurality of sections which can be brought together to define with the inner mold member an endless space having the thickness and configuration of the desired side wall of the final hollow body. Thus by bringing these sections of the outer mold member together the layers between the outer and inner mold members will be confined in the space defined by the mold members pressing against each other with the innermost layer engaging the exterior surface of the inner mold member and the outermost layer engaging the inner surface of the outer mold member, so that in this way the endless side wall of the hollow body is given a precisely determined thickness and configuration as well as having at its inner and outer surfaces predetermined textures determined by the characteristics of the outer surface of the inner mold member and the inner surface of the outer mold member, respectively.
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Aguilo Jose Maria Genovart
Aloy Enrique Ubach
Aloy Pedro Ubach
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