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Environment-friendly foaming material based on EVA waste material and treatment method of EVA waste material

A processing method and technology of foaming materials, applied in the field of organic polymer compounds, can solve problems such as waste of resources, achieve the effect of reducing waste, improving utilization rate, and light surface pattern

Pending Publication Date: 2022-05-13
MAOTAI FUJIAN SOLES CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as the market price of its raw materials is concerned, if these waste materials can be recycled, they still have considerable use value. Burying and burning them is a huge waste of resources, which needs further improvement

Method used

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  • Environment-friendly foaming material based on EVA waste material and treatment method of EVA waste material
  • Environment-friendly foaming material based on EVA waste material and treatment method of EVA waste material
  • Environment-friendly foaming material based on EVA waste material and treatment method of EVA waste material

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046]Its preparation method comprises the following steps: First mix other raw materials except the cross-linking agent BIBP and foaming agent AC uniformly, then carry out banburying, adjust the banburying temperature to be controlled at 86-91°C, keep for 4min, and then turn the material; The mixing temperature rises to 95°C, and the material is turned for the second time; when the banburying temperature rises to 101°C, the material is turned for the third time, and the cross-linking agent BIBP and foaming agent AC are added, and when the banburying temperature rises to 107°C, the second time Turn the material four times; when the mixing temperature rises to 112°C, turn the material for the fifth time, and then banbury for 1 minute, and finally pour the material, start refining, and granulate to obtain environmentally friendly foam rice, which is molded and foamed to produce environmentally friendly foam. bubble material.

[0047] Among them, SEBS is oil-free granular and has...

Embodiment 1

[0050] A processing method for EVA waste material, comprising the following steps:

[0051] Step 1: put waste EVA soles, waste EVA sheets, waste EVA scraps and other waste products into the crusher, and crush them to obtain blocky crushed materials with a length less than 7cm and a width of less than 5cm; then put the blocky crushed materials into the waste crusher , to obtain strip-shaped crushed material;

[0052] Step 2: Put the strip-shaped crushed material, sarin resin, and PMP obtained in step 1 into the internal mixer at a weight ratio of 85:4:8, and gradually increase the mixing temperature to a maximum temperature of 150°C, and the mixing time is 18 minutes. Obtain block banbury;

[0053] Step 3, processing the block-shaped banburying material after banburying through a screw extruder and an open mill to obtain an EVA recovery film;

[0054] Among them, the crusher includes a crushing assembly for crushing the EVA waste material. The crushing assembly includes a fir...

Embodiment 2

[0062] A processing method for EVA waste material, comprising the following steps:

[0063] Step 1: put waste EVA soles, waste EVA sheets, waste EVA scraps and other waste products into the crusher, and crush them to obtain blocky crushed materials with a length less than 7cm and a width of less than 5cm; then put the blocky crushed materials into the waste crusher , to obtain strip-shaped crushed material;

[0064] Step 2: Put the strip-shaped crushed material, sarin resin, and PMP obtained in step 1 into the internal mixer at a weight ratio of 85:10:4, and gradually increase the mixing temperature to a maximum temperature of 150°C, and the mixing time is 25 minutes. Obtain block banbury;

[0065] Step 3, processing the block-shaped banburying material after banburying through a screw extruder and an open mill to obtain an EVA recovery film;

[0066] Among them, the crusher includes a crushing assembly for crushing the EVA waste material. The crushing assembly includes a fi...

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Abstract

The invention discloses an environment-friendly foaming material based on EVA waste materials and a treatment method of the EVA waste materials. The treatment method comprises the following steps: step 1, crushing waste materials such as waste EVA shoe soles, waste EVA sheets, waste EVA leftover materials and the like to obtain strip-shaped crushed materials; 2, the strip-shaped crushed materials obtained in the step 1, sarin resin and PMP are put into an internal mixer according to the weight ratio of 85: (4-10): (4-8), the internal mixing temperature is gradually increased, the highest temperature is 150 DEG C, the internal mixing time is 18-25 min, and blocky internal mixing materials are obtained; step 3, treating the blocky internal mixing material after internal mixing through a screw extruder and an open mill to obtain an EVA recovery film; by limiting the specific treatment mode of the EVA waste materials, resource recycling of EVA shoe sole material heads, defective products, waste products and leftover materials is achieved, the environmental problem caused by white pollution is relieved, the adding proportion of the treated EVA waste materials in shoe sole preparation can be increased to 70% or above, resource waste is greatly reduced, and the utilization rate of the waste materials is increased.

Description

technical field [0001] The invention belongs to the technical field of organic polymer compounds, and in particular relates to an environmentally friendly foaming material based on EVA waste material and a treatment method for EVA waste material. Background technique [0002] Ethylene-vinyl acetate copolymer, referred to as EVA. Generally, the content of vinyl acetate (VA) is 5%-40%. Compared with polyethylene (PE), EVA reduces high crystallinity and improves toughness and impact resistance due to the introduction of vinyl acetate monomer into the molecular chain. , filler compatibility and heat sealing performance, are widely used in foamed shoe materials, functional shed films, packaging molds, hot melt adhesives, wires and cables and toys and other fields. [0003] Due to its toughness, foamability and good molding properties, EVA has been widely used in mid-to-high-end slippers and shoe soles. EVA plastics are used to make slippers or soles by injection molding process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L33/02C08L51/06B29B17/04B29C48/00C08J9/10C08L53/02C08K5/09C08K5/098
CPCC08L23/0853B29C48/022B29B17/04C08J9/103C08J9/0061C08J9/0023B29B2017/0476C08J2323/08C08J2423/08C08J2433/02C08J2451/06C08J2453/02C08L23/0876C08L33/02Y02W30/62
Inventor 卢鑫廖毅彬王育玲林志杰丁思博丁思恩许春树林臭知代雪玲郑荣大
Owner MAOTAI FUJIAN SOLES CO LTD
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