A lightweight packaging preform bottom structure
A packaging bottle and lightweight technology, applied in the field of plastic packaging bottles, can solve the problems of unhelpful bottle performance, unsightly bottles, affecting the appearance of bottles, etc., to save raw materials, facilitate adjustment, and reduce packaging costs.
Active Publication Date: 2016-10-05
SIPA MACHINERY HANGZHOU
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Problems solved by technology
[0003] The general preform is composed of the bottle mouth, the preform body and the preform bottom, but the bottom of the preform on the market is mostly a round bottom composed of a section of arc. Through observation, we found that there are often plastic accumulations on the bottom of the bottle. , and this part of the accumulated plastic does not help to improve the performance of the bottle, but also affects the appearance of the bottle, making the bottle look unattractive
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[0018] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0019] Such as figure 1 The plastic preform shown includes a preform mouth 1, a preform body 2 and a preform bottom 3 of the present invention, which are integrally formed by injection molding.
[0020] Because the bottom of the bottle is easy to pile up materials, it is necessary to reduce the material in the bottom area as much as possible, and at the same time ensure that the bottom has sufficient strength and thickness to ensure that the bottom of the bottle does not break during the drop test. The bottom structure of the lightweight packaging preform of the present invention is the olive bottom. The inner and outer sides of the olive bottom are composed of three arcs and connected smoothly. The proportions of the outer three arcs to the height of the entire bottom are 30%, 59%, and 11%, respectively. %, the proportions of the three interna...
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The invention relates to the field of plastic packaging bottles and aims to provide a lightweight packaging bottle blank bottom structure. The preform bottom structure of this kind of lightweight packaging adopts olive bottom. The inner and outer surfaces of the olive bottom are composed of three arcs and are connected smoothly. The first arc is used to complete the uniform thickness of the bottle wall from the preform bottom to the preform body. Change, the wall thickness of the second and third arcs is the wall thickness of the preform bottom, and the ratio of the wall thickness of the preform bottom to the wall thickness of the preform body is 0.8 to 0.85. The wall thickness of the preform body is uniform. The invention improves the plastic distribution of the bottle by changing the shape of the bottom of the preform, and facilitates the adjustment of the bottle blowing process, and at the same time reduces the weight, saves raw materials, and reduces the packaging cost of the product.
Description
technical field [0001] The invention relates to the field of plastic packaging bottles, in particular to a lightweight packaging preform bottom structure. Background technique [0002] The processing process of plastic packaging bottles is generally first injection molded into preforms by injection molding machine, and then blow molded by bottle blowing machine. [0003] The general preform is composed of the bottle mouth, the preform body and the preform bottom, but the bottom of the preform on the market is mostly a round bottom composed of a section of arc. Through observation, we found that there are often plastic accumulations on the bottom of the bottle. , and this part of the accumulated plastic does not help to improve the performance of the bottle, but also affects the appearance of the bottle, making the bottle look unattractive. So we reduce the plastic accumulation at the bottom of the bottle by changing the shape of the bottom of the preform, which not only red...
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IPC IPC(8): B65D1/02
Inventor 肖卫军崔燕燕王定胜程峰罗琴金汉洋骆武强陈淑远周雄飞汪延波
Owner SIPA MACHINERY HANGZHOU