Method for improving yield of PVB film extruder

An extruder and film technology, applied in the field of increasing the output of PVB film extruders, can solve the problems of increasing material movement resistance, increasing production costs, and consuming cooling water, so as to improve production efficiency, save costs, and improve plasticizing quality Effect

Active Publication Date: 2019-12-20
安徽皖维皕盛新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can efficiently melt and plasticize the material in the extruder, improve the quality and output of plasticization, but it is cumbersome and time-consuming to clean and maintain the barrel, kneading elements and extruder.
Moreover, during the production process, the friction between the material, the kneading disc and the grooved barrel will increase, which increases the resistance of the material movement, wears the kneading elements and the barrel, shortens the replacement cycle of the kneading elements and the barrel, and causes excessive friction. Too much heat will consume a lot of cooling water and increase production costs

Method used

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  • Method for improving yield of PVB film extruder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0022] This embodiment produces PVB film specification 0.76mm, and the type of PVB film extruder used in production is the same as that of Comparative Example 1, the difference is that this embodiment is based on the PVB film extruder used in Comparative Example 1, and its conveying section is increased and the effective length of the screw in the melting section, so that the length-to-diameter ratio of the screw is increased to 42:1, and the ratio of the increased length of the screw in the conveying section to the melting section is 1:1. Add a new extruder barrel in the corresponding screw growth area, and control the temperature of the added conveying section barrel to 135°C and the added melting section barrel temperature to 150°C during production. Simultaneously, a conveying element 72 / 72 is added in the screw growth area of ​​the conveying section, and a shear element 45° / 5 / 56 is added in the screw growth area of ​​the melting section.

[0023] The output of the PVB fil...

Embodiment 3

[0025] The difference between this embodiment and Embodiment 2 is that the length-to-diameter ratio of the screw is set to 44.

[0026] The output of the PVB film of this embodiment is 502kg / h, and the output of the extruder has increased by 32% compared with Comparative Example 1. The performance indexes of the obtained PVB film are as shown in Table 1.

Embodiment 4

[0028] The difference between this embodiment and embodiment 2 is that the length-to-diameter ratio of the screw is set to 46.

[0029] The output of the PVB film of this embodiment is 555kg / h, and the output of the extruder has increased by 46% compared with Comparative Example 1. The performance indexes of the obtained PVB film are as shown in Table 1.

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Abstract

The invention discloses a method for improving the yield of a PVB film extruder. The length-diameter ratio of a screw rod is changed by increasing the effective length of the screw rod of the PVB filmextruder so as to improve the yield of the PVB film extruder. According to the method, the yield of the PVB film extruder can be improved by 20-50%, the production efficiency of the extruder is greatly improved, the cost is saved, and the plasticizing quality of a PVB film can be remarkably improved through the method.

Description

technical field [0001] The invention belongs to the technical field of PVB film production equipment, and in particular relates to a method for increasing the output of a PVB film extruder. Background technique [0002] PVB film (polyvinyl butyral resin film), also known as PVB film, has excellent properties such as transparency, light resistance, heat resistance, sound insulation, softness, anti-fog, low temperature non-hardening, and good adhesion to glass and metal. Widely used in safety glass. So far, the application of safety glass has been quite extensive. In addition to small cars, it is also widely used in aircraft manufacturing, bank counters, construction industry, solar cell film and other fields. [0003] In the PVB film production process, the core equipment is the extruder part. At present, the PVB film extruder mainly adopts twin-screw structure. The twin-screw extruder has the characteristics of good feeding performance, mixing and plasticizing performance,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/405B29C48/505B29C48/625
CPCB29C48/405B29C48/505B29C48/625
Inventor 沈小罡佟春涛童祎李礼伊新华翟士豹项小敏
Owner 安徽皖维皕盛新材料有限责任公司
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