B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/18
B29C 69/00 (2006.01) B29D 35/12 (2010.01) B29D 99/00 (2010.01) A41D 19/04 (2006.01) A41D 31/00 (2006.01) B29C 33/00 (2006.01) B29C 39/10 (2006.01)
Patent
CA 1239764
ABSTRACT A flexible sheet material shaped article comprises a thermoplastic material having a plurality of spaced breathing apertures extending through the thickness thereof, each breathing aperture filled with a porous fibrous material. The flexible sheet material shaped article is formed by utilizing a vertical mold, and hanging a plurality of spaced strands of porous fibrous material from the top of the mold. The mold has a plan or cross- sectional shape corresponding to the shape of the article being provided. The mold is then filled with liquid thermoplastic material, and after cooling a slab of thermoplastic material with strands of fibrous material is produced. The slab is then sliced in a dimension perpendicular to the dimension in which the strands extend, and to the desired thickness to provide the flexible sheet material shaped article.
466844
Davis Murray A.
Shapiro Cohen
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