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Molding method of resin container

A molding method and resin-made technology, which are applied in the field of molding resin-made containers, can solve problems such as increased manufacturing cost and poor molding, and achieve the effects of suppressing manufacturing cost, preventing eccentricity, and not easy to form poor molding.

Inactive Publication Date: 2016-08-17
NIHON YAMAMURA GLASS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there is a problem that molding defects occur and manufacturing costs increase

Method used

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  • Molding method of resin container
  • Molding method of resin container
  • Molding method of resin container

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Experimental program
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Embodiment Construction

[0025] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 It is a schematic transverse sectional view and a schematic longitudinal sectional view of a molding machine 1 for carrying out a molding method of a resin container according to an embodiment of the present invention, figure 2 It is a sectional view of a preform 20 used in a molding method of a resin container and a drawing of a stretching rod 2 inserted into the preform 20 . In the description below, the figure 1 and figure 2 The two sides corresponding to the up and down are referred to as up and down for short. figure 1 The shown molding machine 1 has an equipment structure for implementing a blow molding method, which mainly consists of a blow molding mold 3, a stretching rod device 4 positioned above the blow molding mold 3, a blow molding blower for supplying blow molding air. The molding air device 11 and the control part 12 which controls these stre...

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Abstract

The present invention provides a molding method of a resin container capable of suppressing manufacturing cost by preventing eccentricity of a mouth portion. The preform (20) having two mouths (21, 22) is loaded in the blow molding mold (3) so that the second mouth (22) is located at the entrance through the first mouth (21). The forward direction of the extension bar (2) is forward. Next, while the stretching rod (2) enters the preform (20) through the first mouth (21), the blowing air (50) is blown in to make the preform main body (23) 2 axis extension. In the state where the biaxially stretched molded body (32) is in contact with the blow molding mold (3), the root part (32a) of the second mouth part (22) is cooled at a temperature lower than that of other parts, Prevent the eccentricity of the second port (22).

Description

technical field [0001] The present invention relates to a molding method of a resin container for storing liquid contents. Background technique [0002] An infusion bottle having two openings on the upper and lower sides of a flexible container is known as a resin container for storing an injection (for example, refer to Patent Document 1 and Patent Document 2). The infusion bottle is usually molded by direct blowing. [0003] Patent Document 1: Japanese Patent No. 4048337 [0004] Patent Document 2: Japanese Patent Application Laid-Open No. 5-337163 [0005] However, in the above molding method, since the production speed is slow, the cost is high. In addition, due to the difficulty in controlling the thickness, there is also a disadvantage that the quality tends to vary. On the other hand, as a method for molding containers made of thermoplastic resins such as polyethylene and polypropylene, blow molding is spreading, and containers for food, beverages, pharmaceuticals...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C49/12B29C49/64
Inventor 川村伸生岩堀宏哉
Owner NIHON YAMAMURA GLASS CO LTD
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