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Method for preparing foam product by recycling waste plastics

A technology for waste plastics and foams, which is applied in the field of waste plastics recycling and reuse, can solve the problems of increasing the economic burden of processing, not meeting the full utilization of resources, and being difficult to recycle.

Pending Publication Date: 2021-07-06
安乡县恒达包装材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still problems such as not being able to degrade naturally and being difficult to recycle, thus forming "white pollution".
The widely used treatment method is the combustion method. The gas after combustion passes through water to dissolve easily s

Method used

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  • Method for preparing foam product by recycling waste plastics
  • Method for preparing foam product by recycling waste plastics
  • Method for preparing foam product by recycling waste plastics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Example 1 (Aqueous medium defoaming and volume reduction)

[0037] Such as Figure 1-4As shown, the defoaming equipment of the present invention includes a supporting platform 1, and a defoaming medium heating tank 2 and a defoaming tank 3 fixed on the supporting platform 1 in a conventional manner, and the wall of the defoaming medium heating tank 2 adopts a high pressure resistant It is made of insulating material and the top is closed, only one feed port is left, and the feed port is covered with a heat preservation sealing cover; the inner bottom of the defoaming medium heating tank 2 is a central convex shape; There is a stirring component 4, which is driven by a motor for intermittent low-speed stirring (200-300 rpm), and a heating component 5 is fixed on the inner wall of the defoaming medium heating tank 2, and on the side wall of the defoaming medium heating tank 2 Also fixed with a thermometer, the top and bottom of one side of the defoaming medium heating ta...

Embodiment 2

[0048] Example 2 (defoaming and volume reduction of oily medium)

[0049] Such as Figure 1-4 As shown, the defoaming equipment of the present invention includes a supporting platform 1, and a defoaming medium heating tank 2 and a defoaming tank 3 fixed on the supporting platform 1 in a conventional manner, and the wall of the defoaming medium heating tank 2 adopts a high pressure resistant It is made of insulating material and the top is closed, only one feed port is left, and the feed port is covered with a heat preservation sealing cover; the inner bottom of the defoaming medium heating tank 2 is a central convex shape; There is a stirring component 4, which is driven by a motor for intermittent low-speed stirring (200-300 rpm), and a heating component 5 is fixed on the inner wall of the defoaming medium heating tank 2, and on the side wall of the defoaming medium heating tank 2 Also fixed with a thermometer, the bottom of one side of the defoaming medium heating tank 2 is...

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Abstract

The invention discloses a method for preparing a foam product by recycling waste plastic, and belongs to the technical field of waste plastic recycling. The method specifically comprises the steps of waste plastic selection and pre-drying treatment, primary impurity removal, secondary water washing, cold pressing, crushing, volume reduction and defoaming, rinsing, melt extrusion, granulation and water cooling, re-foaming, curing, molding and the like. According to the method, the waste expandable polystyrene is recycled, the white pollution influence caused by the waste expandable polystyrene is greatly reduced, meanwhile, the waste expandable polystyrene is recycled to be made into turnover boxes, household gardening, aquatic product packaging boxes and the like, and resource ecological treatment is achieved.

Description

technical field [0001] The invention relates to the technical field of recycling waste plastics, in particular to a method for preparing foam products by recycling waste plastics. Background technique [0002] After foaming, polystyrene has good cushioning performance, sound insulation, and heat insulation performance. It also has the characteristics of small density, large volume, and easy storage. It is widely used in cushioning packaging and so on. However, there are still problems such as not being able to degrade naturally and being difficult to recycle, thus forming "white pollution". The widely used treatment method is the combustion method. The gas after combustion passes through water to dissolve easily soluble toxic substances such as nitrogen dioxide. Therefore, a set of water treatment equipment must be prepared when burning waste polystyrene. This must increase the economic burden of processing, and does not conform to the concept of full utilization of resourc...

Claims

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Application Information

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IPC IPC(8): B29B17/00B29B17/02B29B17/04B29B9/06
CPCB29B17/00B29B17/02B29B17/04B29B17/0026B29B9/06B29B2017/0203B29B2017/0015B29B2017/0476Y02W30/52Y02W30/62
Inventor 廖斌
Owner 安乡县恒达包装材料有限公司