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Compositely producing method for poly propylene foamed material and plastic sheet

A manufacturing method and technology of foamed sheets, which are applied in the field of composite manufacturing of polypropylene foamed sheets and plastic sheets, can solve problems such as high cost, many equipments, complicated processes, etc., and achieve the effect of simple operation and convenient and simple manufacturing

Inactive Publication Date: 2009-06-17
CHONGQING HONGDAI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The patent application number is 200310113241.9, which discloses the patented technology of "a method for manufacturing a polyvinyl chloride foam coil backing room", which has disadvantages such as complicated process, many equipments, and high cost.

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0012] Below in conjunction with embodiment further illustrate the present invention.

[0013] Containing homopolypropylene, silicon carbonate, and AC foaming agent azodicarbonamide, the polypropylene foaming materials with a weight ratio of 80, 10, and 10 are put into the hopper of the Φ90 extruder, and the Φ90 extruder The temperature rises to 100°C to melt the polypropylene foam, put the plastic pellets into the hopper of another Φ90 extruder, the temperature of the Φ90 extruder rises to 100°C to melt the plastic pellets, and start the above two The screw of a Φ90 extruder rotates, so that the melted polypropylene foam material is on the lower layer and the melted plastic is on the upper layer, and they are extruded to the T-shaped head die at 100°C at the same time, and flow into the gap wedge between the two rollers of the extruder unit. , rolled into a composite sheet material, naturally cooled to room temperature, cut into 1.5 m x 2 m specifications, that is, the finish...

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Abstract

The present invention relates to polypropylene foaming technology, and provides one kind of simple process for producing multilayer composite of formed polypropylene sheet and plastic sheet with two plastic extruders and one extruding mold. The technological scheme of the present invention includes throwing formed polypropylene into one plastic extruder, raising the temperature in the plastic extruder to 100-280 deg.C to smelt formed polypropylene, throwing plastic grains into one other extruder and raising the temperature to 100-300 deg.C to smelting plastic, rotating the screws of these two extruders to extrude out polypropylene material in the lower layer and plastic in the lower layer through one identical T-shaped port mold at 100-300 deg.C, and rolling in a plate extruder set to form sheet.

Description

1. Technical field [0001] The invention relates to a composite manufacturing method, in particular to a composite manufacturing method of polypropylene foam sheets and plastic sheets. 2. Background technology [0002] The patent application number is 200310113241.9, which discloses the patent technology of "a kind of manufacturing method of polyvinyl chloride foam coil backing plate chamber", which has the disadvantages of complicated process, many equipments and high cost. 3. Contents of the invention [0003] The purpose of the present invention is to provide a composite manufacturing method of polypropylene foam sheet and plastic sheet which is simple in manufacturing method and conforms to environmental protection requirements, and is degradable, high in physical heat resistance and low in production cost. [0004] The technical solution adopted by the object of the present invention is that its manufacturing method steps are as follows: [0005] The polypropylene foa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C69/02B29C47/56B29C47/04B29C47/12B29C43/24B29C47/92B29K23/00B29K55/02B29L9/00B29C48/08B29C48/30B29C48/92
CPCB29C47/92B29C48/92B29C2948/92704B29C48/08B29C2948/92895
Inventor 赖彪钟发声赖生泽
Owner CHONGQING HONGDAI TECH
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