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Coating preparing device and method for extrusion molding product functional film

A technology for preparing devices and functional films, which is applied in the field of plastic product molding and processing, can solve the problems of difficult VOC emissions and complicated processes, and achieve the effects of uniform and firm film layers, simplified processes, and simple processes

Pending Publication Date: 2020-09-15
NANCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the secondary processing and modification of plastic products after the primary molding process, the current common plastic surface modification processes (such as surface graft polymerization, surface spraying, surface lamination, surface corona treatment, etc.) There are problems such as complex procedures and VOC (volatile organic compound) emissions are not easy to meet environmental protection requirements

Method used

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  • Coating preparing device and method for extrusion molding product functional film
  • Coating preparing device and method for extrusion molding product functional film
  • Coating preparing device and method for extrusion molding product functional film

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1. A coating preparation device and method for a functional film layer of an extruded product, comprising:

[0026] Extrusion mold 1 and mold mandrel 2, extrusion mold 1 built-in mold 2 mandrel, used for extrusion of plastic products;

[0027] The carrier gas generating device is used to form a gas flow whose temperature and load meet the requirements of use;

[0028] A coating device for uniform coating of the film layer;

[0029] Shaping cooling device 5, used for cooling and shaping of plastic products;

[0030] Between the plastic extrusion die 1 and the shaping cooling device 5, the first coating chamber 3 is installed, and the coating chamber is made of iron-carbon alloy. The plastic products extruded from the extrusion die 1 flow in a molten state first. First coating chamber 3 via film layer. In the first coating chamber 3, flow out from the outer membrane aerosol generator 24 (powder or liquid type aerosol generator) in the carrier gas generating ...

Embodiment 2

[0043] Example 2, see image 3 , The invention also provides a method for preparing a functional film layer on the surface of a plastic blown film.

[0044] In order to complete the preparation of the functional film layer on the outer surface of the plastic blown film, with reference to Example 1, a coating device is provided between the bubble tube extrusion die 25 and the cooling air ring 27, and the first coating chamber 3 of the coating device Replaced by the second coating chamber 26 of the film layer. During blown film processing, the cylindrical film blank 29 extruded from the bubble tube extrusion die 25 first passes through the second coating chamber 26, then passes through the cooling air ring 27 and is blown into a film bubble 29 by the gas in the tube. , and then through the guide roller 30 and the pressure roller 31 to be rolled up and packaged. When the film bubble 28 flows through the second coating chamber 26 of the film layer, the surface is in a molten sta...

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Abstract

The invention relates to a coating preparing device and method for an extrusion molding product functional film. According to current common plastic surface modification technologies (such as surfacegraft polymerization, surface spraying, surface lamination and surface corona treatment), the processes are complex, and the VOC discharging amount cannot meet the environment-friendly requirement. Bymeans of the coating preparing device and method for the extrusion molding product functional film, a specially-made film first coating chamber is installed, and a plastic product extruded from an extruding die firstly passes through the first coating chamber in a molten state; airflow carrying nano powder (or atomized liquid drops) flows through an aerosol generator in the first coating chamber,and the nano powder (or atomized liquid drops) carried by the airflow adheres to a molten surface in an adsorption manner to form the film with special functions; and afterwards, after the airflow isrecycled in the device through powder (or atomized liquid drops), the airflow is discharged into the atmosphere. The coating preparing device and method have the beneficial effects that the processesare simple, and the cost is low; the product film is uniform and firm; the technology extensibility is high, and environment friendliness is good.

Description

technical field [0001] The invention relates to the technical field of molding and processing of plastic products, in particular to a coating preparation device and method for functional film layers of extruded products. Background technique [0002] The application of plastic products has penetrated into every corner of society, from industrial production to basic necessities of life, it is everywhere. With the development of society, while meeting the basic functional requirements, people also put forward some special performance requirements for plastic products, such as self-cleaning and anti-fouling, anti-wear resistance, surface conductivity and interface barrier, etc. In actual production, this Such requirements are usually met by using a surface modification process to generate a special functional film layer on the surface of the product. However, as the secondary processing and modification of plastic products after the primary molding process, the current common ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/09B29C48/90B29C48/27B29C48/275B29C48/00B29C71/00
CPCB29C48/09B29C48/901B29C48/27B29C48/277B29C48/001B29C71/00Y02P70/10
Inventor 罗成黄兴元刘同科
Owner NANCHANG UNIV
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