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Method for inhomogeneous temperature control of preforms

A technology for prefabricated blanks and components is applied in the field of uneven temperature regulation of prefabricated blanks, which can solve problems such as increasing the cost of prefabricated blanks.

Inactive Publication Date: 2018-01-05
KHS CORPOPLAST GMBH & CO KG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of this solution is that the orientation presupposes the use of preforms specially configured for this purpose, which leads to an increase in the cost of the preforms

Method used

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  • Method for inhomogeneous temperature control of preforms
  • Method for inhomogeneous temperature control of preforms
  • Method for inhomogeneous temperature control of preforms

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Experimental program
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Embodiment Construction

[0041] figure 1 with figure 2 The principle structure of the device for transforming the preform (1) into the container (2) is shown in FIG. The process of blow molding from the preform (1) into the container (2) should only be explained in a basic manner according to the drawings.

[0042] The device shown for forming the container (2) basically consists of a blow molding station (3), which is provided with a blow mold (4), and the preform (1) can be placed in the blow molding station (3). Plastic mold. The preform (1) can be an injection molded part of polyethylene terephthalate. In order to achieve the preform (1) into the blow mold (4) and in order to achieve the finished container (2) taken out, the blow mold (4) is typically composed of mold halves (5, 6) and The bottom part (7) is constituted by the bottom part which can be oriented by the lifting device (8), that is to say can be lowered or raised in the example described. The preform (1) can be held in the area of ​...

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PUM

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Abstract

The invention relates to a method for controlling the temperature of preforms (1) which are rotationally symmetric about their longitudinal axis and have a standard thread, and which are made of a thermoplastic material, wherein the preforms (1) are provided for blow-molding shaping into containers (2) having a non-circular cross-section with a cut that is transverse relative to the longitudinal axis of the container (58), and are heated for temperature conditioning, wherein the preform (1) is provided with a temperature profile along a circumference during the heating process, which temperature profile is generated such that areas are differentially heated in the radial direction of the circumference of the preform (1), wherein the thread (62) of the preform (1) is aligned in a predefinedtarget position before said areas are differentially heated, characterized in that the preform (1) is set in rotation for the alignment thereof, and an alignment element (140, 150) engages in the standard thread (62) and prevents the preform (1) from rotating further as soon as the aligning element (140, 150) comes in contact with a predetermined contact surface (143, 171, 172) in the standard thread (62).

Description

Technical field [0001] The present invention relates to a method for uneven temperature adjustment of a preform made of thermoplastic material, wherein the preform is set for blow molding into a container, wherein the preform is provided with a temperature along the circumferential direction Curve, the temperature curve is generated by heating the area differently in the radial circumferential direction of the preform. In this case, the preform is usually constructed rotationally symmetrically about its longitudinal axis. The temperature pretreatment of the preform is achieved by heating, for example by conveying the preform through a heating zone. During the heating process, the preform is provided with a temperature profile along the circumferential direction. Background technique [0002] This method is used, for example, when the container should be manufactured from a preform (when the cross section of the container is different from the circular shape). The difference ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/64B29C49/06B29C49/42B29C49/02B29L31/00
CPCB29L2031/7158B29C49/06B29C49/6436B29C2049/024B29C49/64B29C2949/0774B29C2949/0796B29C49/42119B29C2049/023B29C49/6458B29C49/4205B29C49/48B29C49/62B29C49/6454B29K2067/003
Inventor A·席尔B·奥尔利奇A·维泽
Owner KHS CORPOPLAST GMBH & CO KG