B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 1/02 (2006.01) B29C 33/00 (2006.01) B29C 49/04 (2006.01) B29C 49/48 (2006.01)
Patent
CA 2075258
ABSTRACT OF THE DISCLOSURE To place material accumulations, which is unavoidable upon blow-molding a bottle, in a separable two-part blow mold form sway from a bottom fold line (2) of the bottle, in which the bottom portion of the bottle is formed with a generally inverted V-shaped depression (3) and the apex of the V defines said bottom fold line, the separating seam (9) in the bottom portion is placed at an angle (3) with respect to the bottom fold line (2), a central region of the bottom separating seam intersecting, at least approximately, the bottle axis (17). The mold form has a body separating plane (12) and an end portion separating plane (16, 23, 25) in which the end portion separating plane is angled by said angle (.alpha.) with respect to the body separating plane. Upon blow-molding, the bottom seam (9) and the bottom fold line (2) will be non-congruent, and material accumulation (11) upon blow-molding the bottle will occur at locations remote from the bottom fold line (2), thus not interfering with folding the bottle along the bottle fold lines (2, 15). This method is suitable for bottles of integral shape, as well as bottles having an integral molded-in handle (Fig, 5: 21).
Duering Ag
Macrae & Co.
LandOfFree
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