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Preparation method of wood-plastic moulded tray

A pallet and molding technology, applied in the field of plastic product processing, can solve the problems of low degree of industrial automation, many processing procedures, long production cycle, etc., and achieve the effect of shortening production cycle, reducing energy consumption, and reducing pressure holding time.

Inactive Publication Date: 2019-01-04
WUHU ASIA PACIFIC GENERAL TRAY PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The processing cycle of extrusion molding is short and the process is simple, but there are many subsequent processing procedures after extrusion, and the degree of industrial automation is not high
Compression molding is an important molding method. Most of the materials are put into the mold cavity, and then the mold is closed, heated and pressurized, so that the materials are melted and solidified in the mold, and then the products are obtained by demoulding. The degree of automation Higher, easy to operate, but its production cycle is long and production efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a wood-plastic molded pallet, comprising the steps of:

[0027] S1. Add plastic base material, wood flour, coupling agent, lubricant, antioxidant, and coloring agent into a high-speed mixer, and mix evenly to obtain a mixture;

[0028] S2, adding the mixed material to a single-screw extruder for melting and blending to obtain a molten material;

[0029] S3. The molten material is heated and kept warm in the storage bin in the middle of the single-screw extruder. After the molten material reaches the amount for preparing a tray, it is sent into the mold of the cold press, pressed and formed, solidified and cooled, and demolded to obtain wood. Molded tray.

Embodiment 2

[0031] A method for preparing a wood-plastic molded pallet, comprising the steps of:

[0032] S1. Add wood chips with particle size between 1-16mm and moisture content not higher than 3%, PE recycled material, silane coupling agent KH550, zinc stearate, antioxidant 1010, and black masterbatch to high-speed mixing In the machine, mix evenly to obtain a mixture; the temperature of the high-speed mixer is set at 70 ° C, and the mixing time is 20 minutes; PE recycled materials, wood chips, silane coupling agent KH550, zinc stearate, antioxidant 1010, black The mass ratio of the masterbatch is: 30:70:0.1:1:0.1:1;

[0033] S2. Put the mixed material into the single-screw extruder to melt and blend to obtain the molten material; the temperature of each section of the extruder is: 150-175°C in the first zone, 165-195°C in the second zone, 170-195°C in the third zone, and 170-195°C in the fourth zone. Zone 180-200°C;

[0034] S3. The molten material is heated and kept warm in the sto...

Embodiment 3

[0036] A method for preparing a wood-plastic molded pallet, comprising the steps of:

[0037] S1. Add cotton stalk powder with particle size between 1-16mm and moisture content not higher than 3%, PP recycled material, titanate coupling agent NDZ102, sodium stearate, antioxidant 3114, and black masterbatch Put it into the high-speed mixer, mix evenly, and get the mixture; the temperature of the high-speed mixer is set at 110 ° C, and the mixing time is 5 minutes; PP regenerated material, cotton stalk powder, titanate coupling agent NDZ102, stearic acid The mass ratio of sodium, antioxidant 3114, and black masterbatch is: 50:50:1.5:0.1:1.5:0.1;

[0038] S2. Put the mixed material into the single-screw extruder to melt and blend to obtain the molten material; the temperature of each section of the extruder is: 150-175°C in the first zone, 165-195°C in the second zone, 170-195°C in the third zone, and 170-195°C in the fourth zone. Zone 180-200°C;

[0039]S3. The molten material...

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Abstract

The invention relates to the technical field of processing of plastic products, and particularly discloses a preparation method of a wood-plastic moulded tray. The preparation method comprises the following steps: adding a plastic base material, wood flour, a coupling agent, a lubricating agent, an antioxidant agent and a coloring agent in a high-speed mixing machine, and uniformly mixing to obtain a mixture; adding the mixture in a single-screw extruder and carrying out melt blending to obtain a melted material; heating and insulating the melted material in a storage bin in the middle of thesingle-screw extruder, after the melted material is enough to be prepared into a tray, feeding the melted material in a mold of a cold press, carrying out compaction molding on the melted material, solidifying and cooling, and then demolding to obtain the wood-plastic moulded tray. The wood flour and matrix resin are mixed and plastified and then are extruded to obtain a blank, the blank is then moulded, thus, the holding time can be shortened, the production period is also shortened, the production efficiency is improved, highly automation can be realized, and thus, the preparation method isan optimal production process.

Description

technical field [0001] The invention relates to the technical field of plastic product processing, in particular to a preparation method of a wood-plastic molded tray. Background technique [0002] Wood-plastic composite (WPC) is a product made of wood fiber and plastic as the main raw material, after adding various processing aids, mixing with a high-speed mixer, and then granulating or directly molding. Using wood-plastic composite materials to make molded pallets can solve the disadvantages of poor cleanliness, easy damage, and short life of wooden pallets, and also avoid the disadvantages of poor rigidity, high price, and low specification flexibility of all-plastic pallets. The excellent characteristics of the plastic tray. At present, the main molding methods used in the industrial production of wood-plastic molded pallets are extrusion molding and compression molding. The processing cycle of extrusion molding is short and the process is simple, but there are many su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/02B29C43/52B29C43/34C08L23/06C08L23/12C08L97/02C08K13/02
CPCB29C43/02B29C43/34B29C43/52C08L23/06C08L23/12C08L97/02C08K13/02
Inventor 夏则荣
Owner WUHU ASIA PACIFIC GENERAL TRAY PACKING CO LTD
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