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System and method for forming polymer

A polymer, mold technology, used in the field of systems where polymers are formed into parts, to solve problems such as unacceptable cycle times

Inactive Publication Date: 2013-08-14
SABIC GLOBAL TECH BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, although these heating methods rapidly heat the mold surface, they can result in unacceptable cycle times for applications requiring large parts and / or high numbers of parts

Method used

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  • System and method for forming polymer
  • System and method for forming polymer
  • System and method for forming polymer

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Embodiment Construction

[0016] figure 1 It is a top view of a system 10 for manufacturing polymer parts according to an embodiment of the present invention. The system 10 includes a flat plate 12 supporting a molding device 14 for forming a polymer, and the molding device 14 can be opened and closed by a rod 16 of the flat plate 12. The system 10 also includes a thermal energy source 20 that provides thermal energy to the molding equipment 14. The details of the thermal energy source 20 will be further described below. For example, the thermal energy source 20 may be an induction heating device that provides energy to the molding equipment 14. For applications that include preheating the polymer prior to molding, for example, in a thermoforming operation where the polymer is solid and heated before being placed in a mold, a preheating furnace 22 is optionally included. The heat transfer device 24 provides a heating medium and a cold medium to the molding device during the molding cycle. As described...

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Abstract

Various systems and methods for forming a polymer part with utilizing heating fluid are provided. In one embodiment of the present invention a method for forming polymer includes heating the mold apparatus with a first heat energy source comprising heating fluid to a first mold temperature, and then heating the mold apparatus with a second energy source which is different than the first energy source. The second energy source heats the mold surface to a second mold temperature greater than the first mold temperature to form the part to achieve a desired surface finish of the polymer part.

Description

Invention field [0001] The present invention relates to a system and method for using a heating fluid to heat a mold to form a polymer into a part. More specifically, the present invention relates to systems and methods for forming polymers into parts using temperature cycling. Background of the invention [0002] The conventional molding method used to manufacture the required parts includes transferring heat to the mold body so that the surface temperature of the cavity in the mold body allows the polymer to flow sufficiently to fill the cavity. It is increasingly desirable to cycle the mold to a higher temperature, thereby improving the surface or appearance quality of the part in addition to improving the physical properties of the part. However, it was found that the temperature cycle of heating and cooling the mold prolonged the cycle time because it took time to provide and eliminate heat in order to increase and decrease the temperature of the mold body. [0003] Inductio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C33/04B29C33/06B29C45/73
CPCB29C2035/0816B29C45/73B29C33/04B29C33/06B29C2045/7393B29C2035/0811B29C2045/7368
Inventor 拉马萨米·安巴拉苏普拉卡什·奥姆阿什维特·迪亚斯米林德·S·帕拉德卡安舒曼·特里帕西丹尼尔·W·索尔
Owner SABIC GLOBAL TECH BV