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Production process for preparing plastic particles by utilizing waste materials

A technology of plastic granules and production process, applied in the field of plastic manufacturing, can solve the problems of poor applicability, prone to cracks, breakage, etc., and achieve the effect of wide applicability

Inactive Publication Date: 2017-05-31
ZHANGJIAGANG DANENG PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of polyurethane products, and the output is increasing day by day. At the same time, a large amount of waste is generated. These wastes can be used as plastic granules. Originally, the existing technology has used polyurethane waste to be added to PVC materials for the manufacture of plastic granules, but the existing The plastic particles supported by the formula are prone to cracks or even broken after being impacted, and the applicability is not wide

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A production process for preparing plastic granules from waste materials, characterized in that it comprises the following steps:

[0021] (1) Material selection, raw materials include the following components according to weight percentage: PVC waste 65%, polyurethane waste 20%, calcium powder 10%, calcium stearate 0.5%, clay 0.5%, plasticizer 3.8%, additives 0.2% ,

[0022] (2) Cleaning, the raw materials are cleaned by caustic soda;

[0023] (3) Screening, screening the raw materials through a 50-70 mesh screen;

[0024] (4) Add the screened raw material to a kneader for processing; the kneading time is 25 minutes, and the kneading temperature is 170°C;

[0025] (5) Add the kneaded raw materials into a twin-screw extruder for extrusion granulation; wherein, the extrusion temperature is 120°C;

[0026] (6) Cool and pack.

Embodiment 2

[0028] (1) Material selection, raw materials include the following components according to weight percentage: PVC waste 70%, polyurethane waste 15%, calcium powder 9%, calcium stearate 0.6%, clay 0.4%, plasticizer 4.8%, additives 0.2% ;

[0029] (2) Cleaning, the raw materials are cleaned by caustic soda;

[0030] (3) Screening, screening the raw materials through a 50-70 mesh screen;

[0031] (4) Add the screened raw material to the kneader for processing; the kneading time is 20 minutes, and the kneading temperature is 180°C;

[0032] (5) Add the kneaded raw materials into a twin-screw extruder for extrusion granulation; wherein, the extrusion temperature is 125°C;

[0033] (6) Cool and pack.

Embodiment 3

[0035] A production process for preparing plastic granules from waste materials, characterized in that it comprises the following steps:

[0036] (1) Material selection, raw materials include the following components according to weight percentage: PVC waste 68%, polyurethane waste 17%, calcium powder 9%, calcium stearate 0.6%, clay 0.4%, plasticizer 4.8%, additives 0.2% ,

[0037] (2) Cleaning, the raw materials are cleaned by caustic soda;

[0038] (3) Screening, screening the raw materials through a 50-70 mesh screen;

[0039] (4) Add the screened raw material to a kneader for processing; the kneading time is 30 minutes, and the kneading temperature is 180°C;

[0040] (5) Add the kneaded raw materials into a twin-screw extruder for extrusion granulation; wherein, the extrusion temperature is 130°C;

[0041] (6) Cool and pack.

[0042] In the present invention, by adding clay and plasticizer to the raw materials and combining corresponding production techniques, the manu...

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PUM

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Abstract

The invention provides a production process for preparing plastic particles by utilizing waste materials. The production process comprises the following steps: (1) choosing raw materials comprising the following components in percentage by weight: 40-70% of a PVC (polyvinyl chloride) waste material, 10-40% of a polyurethane waste material, 3-10% of calcium powder, 0.5-8% of calcium stearate, 0.3-0.8% of clay, 3-5% of a plasticizer and 0.1-0.3% of an adjuvant; (2) cleaning the raw materials by caustic soda; (3) screening the raw materials through a 50-70-mesh screen; (4) adding the screened raw materials into a kneader for processing; (5) adding the kneaded raw materials into a twin-screw extruder for extruding and granulating; and (6) cooling and packaging. By means of adding the clay and the plasticizer in the raw materials, and combined with a corresponding production process, the product has considerable tenacity and broader applicability.

Description

technical field [0001] The invention relates to a production process for preparing plastic granules from waste materials, and belongs to the technical field of plastic manufacturing. Background technique [0002] Polyurethane materials are widely used in automobiles, construction, home appliances, textiles, shoe materials, leather and other fields because of their high elasticity, high wear resistance, good low temperature resistance and solvent resistance, and a wide range of performance adjustments. There are many kinds of polyurethane products, and the output is increasing day by day. At the same time, a large amount of waste is generated. These wastes can be used as plastic granules. Originally, the existing technology has used polyurethane waste to be added to PVC materials for the manufacture of plastic granules, but the existing The plastic particles supported by the formula are prone to cracks or even breakage after being hit by collisions, and their applicability is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08L75/04C08K3/26C08K5/098C08K3/34
CPCC08L27/06C08L2207/20
Inventor 袁庆
Owner ZHANGJIAGANG DANENG PLASTIC PROD