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Extruding mould applicable to PET (Polyethylene Terephthalate) profiled bar

A technology for extrusion dies and profiles, which is applied in the field of extrusion dies for extrusion of PET profiles, can solve problems such as reduced mechanical properties, low melt strength, and insufficient back pressure, and achieve increased melt pressure and high mechanical properties. , the effect of slowing down the cooling rate

Inactive Publication Date: 2013-10-30
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an extrusion die suitable for extruding PET profiles in order to overcome the defects in the above-mentioned prior art. The die overcomes low melt strength, insufficient back pressure, crystallization and Faster and mechanical performance degradation and other problems, by controlling the temperature of the shaping die to ensure the stable production of extrusion dies for PET profiles

Method used

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  • Extruding mould applicable to PET (Polyethylene Terephthalate) profiled bar
  • Extruding mould applicable to PET (Polyethylene Terephthalate) profiled bar

Examples

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Embodiment 1

[0024] Such as Figure 1-2 As shown, the extrusion die of the present invention includes a die head 1, a calibrating die 2, a vacuum suction port 4, a calibrating die water channel 9, a water inlet 7, a water outlet 8, a blocking block 10 and an air groove 11, and also includes a heating plate 3, a positioning Pin 5 and molded thermal sensor 6.

[0025] The die head 1 and the calibrating die 2 are connected by positioning pins 5, thereby ensuring accurate center positioning of the die head 1 and the calibrating die 2, and reducing product defects caused by misalignment. The positioning pin 5 is arranged at the left end of the die head, Used to connect stereotypes. The calibrating mold 2 is provided with a heating plate 3, a calibrating mold thermal sensor 6, a water inlet 7, a water outlet 8, and a vacuum suction port 4, and the calibrating mold 2 opens a setting mold water channel 9 and an air groove 11. There are 2 heating plates 3, which are respectively arranged on the t...

Embodiment 2

[0030] Same as embodiment 1, wherein the upper and lower water inlets are respectively 2. There are 3 water outlets up and down.

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Abstract

The invention relates to an extruding mould applicable to a PET (Polyethylene Terephthalate) profiled bar. The extruding mould comprises a mould head, a sizing mould, a vacuum exhausting opening, a sizing mould water channel, a water inlet and a water outlet, and further comprises a heating plate, a positioning pin and a sizing mould heat sensor. Compared with the prior art, the extruding mould disclosed by the invention overcomes the problems that the strength of a smelt body is low, the back pressure is low, the crystallization is fast and the mechanical performance is reduced in the PET profiled bar extruding process; the extruding mould can ensure that the PET profiled bar is stably produced through controlling the temperature of the sizing mould; the structure of the mould can obviously increase the extruding pressure of PET in the extruding production process and slows down the cooling speed, so that the PET is sufficiently crystallized and the high mechanical performance is obtained.

Description

technical field [0001] The invention relates to the field of extrusion equipment for plastic profiled materials, in particular to an extrusion die suitable for extruding PET profiled materials. Background technique [0002] At present, plastic profiles have replaced the role of aluminum alloy and steel in many fields. PVC and PA66 are widely used in the field of profile extrusion, replacing steel with plastic for energy saving and environmental protection. Plastic profiles are widely used in building doors and windows, solar photovoltaics and other fields. Compared with PVC profiles, PET (polyethylene terephthalate) has the advantages of high modulus, good creep resistance, and good weather resistance; in addition, compared with PA66, PET has obvious advantages in price. However, in actual production, due to the large melt index, low viscosity and good fluidity of the PET material itself, it is difficult to ensure that the PET has sufficient melt strength in the conventional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/12B29C47/90B29C47/92B29C48/30B29C48/90B29C48/92
Inventor 刘洪雷
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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