Bottle with bottom hanging device, forming method and injection mould

Abstract

To mold a hanger by a straight umbrella-shape hook on the bottom part of a bottle by drafting-blow molding by improving the bottom structure of a preform and a drafting-blow molding means. This thin bottle 1 is molded by draft-blowing the preform 2 which is injection-molded. At the center of the bottom part 13 which is indented in the bottle, a hanger by the umbrella-shape hook comprising a support 14 and a flange 15 is provided. The hanger is formed of a flange which is integrally formed around a sprue on the bottom surface of the preform and the sprue proximal part.

Description

technical field [0001] The invention relates to a bottle, its forming method and an injection mold. There is an integral hanger at the bottom of the stretch-blow-molded thin-walled bottle, which can be reversely lifted. Background technique [0002] As an infusion bottle that can be lifted, the hanging piece is integrally formed at the bottom of the direct blow molding by pinching off, but since the hanging piece protrudes from the outside of the grounding surface, even the hanging piece can be bent freely , The hanging piece will also become an obstacle, so there is a problem that it cannot be transported and filled by standing on its own like ordinary bottles. [0003] In addition, even if it is a bottle manufactured by stretch blow molding an injection-molded preform, the bottom surface is formed with a raised bottom, and a freely bendable hanging piece is formed in the concave portion formed at the bottom, or the injection port is Flattened to form a hanging piece, howe...

AI Technical Summary

Problems solved by technology

[0002] As an infusion bottle that can be lifted, the hanging piece is integrally formed at the bottom of the direct blow molding by pinching off, but since the hanging piece protrudes from the outside of the grounding surface, even the hanging piece can be bent freely , the hanging piece will also become an obstacle, so there is a problem that it cannot be transported and filled by standing on its own like ordinary bottles

[0003] In addition, even if it is a bottle manufactured by stretch blow molding an injection-molded preform, the bottom surface is formed with a raised bottom, and a freely bendable hanging piece is formed in the concave portion formed at the bottom, or the injection port is Flattened to form a hanging piece, however, due to the limited depth of the recess, the size of the hanging piece is also limited, and a satisfactory hanging piece cannot be formed. To form the hanging piece, a special bottom shape is required, and drilling, etc., are required. Sub-processing, so it is easy to increase the cost

[0004] As the hanger for the bottom of the bottle, the umbrella-shaped hook is the most simple and reliable. However, due to the deformation of the bottom during forming, the bottom umbrella-shaped hook formed by stretch blow molding must be vertical. The shape is extremely difficult, even if there is a slight inclination, it will be regarded as a defective product, so the yield rate is low, and there is a problem that it is difficult to implement

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