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Apparatus and method for controlling and/or regulating temperature of a heating device for preforms

一种加热装置、温度控制的技术，应用在预制件温度控制用加热装置领域，能够解决热增加等问题，达到防止过多偏离、精确温度调节、快速调节的效果

Active Publication Date: 2012-01-11
KRONES AG
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Problems solved by technology

While it is also possible to affect and modify different heating zones proportionally to the same extent, modifying the manipulated variable too much can lead to an overall heat increase that deviates more than expected since the overall heating profile will change

Method used

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  • Apparatus and method for controlling and/or regulating temperature of a heating device for preforms
  • Apparatus and method for controlling and/or regulating temperature of a heating device for preforms
  • Apparatus and method for controlling and/or regulating temperature of a heating device for preforms

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Embodiment Construction

[0063] Identical or equivalent elements of the invention are marked with the same reference numerals. Also for the sake of clarity, only the reference numbers relevant to explaining the various figures are provided. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment, of the apparatus and methods according to the invention are intended for purposes of illustration only and are not intended to limit the scope of the invention.

[0064] figure 1 The qualitative diagram given in shows the relationship between the strain and the resulting material stress when a PET material is deformed when it is used to stretch blow mold a beverage container. Here, the horizontal axis is the strain and the vertical axis is the resulting material stress. This graph is considered exemplary. At an initial low strain, they show an approximately linear rise curve of the stress, which then flattens out along a further section, result...

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Abstract

A method for the temperature control and / or regulation of a heating device (10) for preforms (46) made from a thermoplastic material, the method being intended for controlling the temperature of the preforms (46) prior to a subsequent blow molding or stretch blow molding process. The temperature control process includes at least two distinct, consecutive heating stages (12, 14), where a near uniform base temperature of the entire preform (46) is achieved in the first heating stage (12). The base temperature approximately corresponds to a maximum heating temperature (T2) for maintaining the dimensional stability of the thread section at the preform's (46) open-topped neck section. An unevenly distributed softening temperature (T3) according to a predefineable thermal profile is achieved in the second heating stage (14), with the softening temperature (T3) being required for blow molding or stretch blow molding at least the preform's (46) body section located below the thread section and / or a collar area located therebelow.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from German patent application DE 10 2010 021 445 filed May 25, 2010, the content of which is hereby incorporated by reference. technical field [0003] The invention relates to a method for temperature control and / or temperature regulation of a heating device for preforms, wherein the preforms are made of thermoplastic material. The invention also relates to a heating device for temperature control of preforms made of thermoplastic material for subsequent blow molding or stretch blow molding processes. Background technique [0004] Beverage containers made of thermoplastic materials, especially of the most widely used PET, are usually produced using the stretch blow molding process. In a mostly two-stage stretch blow molding process, containers are typically made from injection molded, rotationally symmetric preforms. The preform comprises an elongated cylindrical sided body part wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C49/78B29C48/92
CPCB29C49/6445B29C49/68B29C49/78B29C49/6419B29C49/648B29C49/6418B29C2049/7861B29C2049/78675B29C2049/7874
Inventor 克劳斯·翁思康纳德·西恩乔彻恩·赫蒂娜赫尔默特·阿斯巴郎德
Owner KRONES AG
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