Blow molding of double-walled box in diagonal halves

Details Blow molding of double-walled box in diagonal halves Blow molding of double-walled box in diagonal halves

1987-09-11

1989-02-21

Silbaugh, Jan H.

Metal working

Method of mechanical manufacture

Assembling or joining

29463, 29525, 295251, 264523, 264530, 264154, 264269, 264510, 264512, B29C 4900, B29C 4922

Patent

active

048052906

ABSTRACT:
A generally rectangular, double-walled box 10 is blow molded in a pair of separately formed diagonal halves 10a and 10b, each including adjoining side walls 11 and 12 subtending a diagonal half of the bottom 15 of box 10. Walls 11 and 12 of each diagonal half are oriented obliquely to the parting plane 43 of a mold 40 that has a cavity 42 and core 41 for forming the inner and outer walls of each box half 10a and 10b. The halves are assembled together along a junction region 13 and 14, preferably so as to trap a hinged cover 20. By filling the interwall cavities of the box with a suitable insulation material, the box can be used for fire resistant storage or cold storage.

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patent: 4035461 (1977-07-01), Korth
patent: 4423000 (1983-12-01), Teraoka
patent: 4510116 (1985-04-01), Peters et al.

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