CN104290217A

CN104290217A - Waste polyester polyurethane sole recycling method

Info

Publication number: CN104290217A
Application number: CN201310316451.1A
Authority: CN
Inventors: 杨钟
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-07-18
Filing date: 2013-07-18
Publication date: 2015-01-21

Abstract

The invention discloses a waste polyester polyurethane sole recycling method. The method comprises the following steps: crushing waste polyester polyurethane soles to fragments with the diameter of 10-20mm, and processing by a granulator to form strips, and cutting the strips to form 3-4mm particles; and preparing waterproof sole benches or large bottoms or large bottom pieces through a screw rod type disk machine or a screw rod type horizontal machine. The polyester polyurethane sole recycling method allows new soles to be prepared through the steps of crushing the waste soles to form fixed sizes, forming the strips, cutting the strips to form the particles with a fixed size, and processing the waste polyester polyurethane materials through the screw rod type disc machine or the screw rod type horizontal machine, and the waste soles can be used to directly prepare new waterproof sole platforms or large bottoms or large bottom pieces without new polyurethane, so the method has the advantages of material waste avoiding, no conversion of the preparation of other chemical products, simple operation, environmental protection and saving, and the prepared products can be hydrolyzed and have no pollution to environment.

Description

A kind of PAUR scraps sole recoverying and utilizing method

Technical field

The application relates to the recycling field of environment protection sole, particularly relates to a kind of method that PAUR scraps sole recycling.

Background technology

Along with polyurethane material purposes is more and more wider, consumption is increasing, and environmental protection becomes the major obstacles affecting polyurethane material and further develop.Therefore, the recycling of polyurethane condemned MAT'L seems particularly important.The recycling of current polyurethane mainly contains three kinds of methods: Physical, chemical method, energy law.Physical has many reports and practical technique, but the polyurethane material poor-performing that the method reclaims, is only applicable to low-grade goods.Energy recovery is by waste incineration is reclaimed heat, and this mode can cause secondary pollution, does not substantially re-use.Chemical method refers to that polyurethane material is under the effect of chemical degradation agent, is degraded into the composition that relative molecular mass is lower; Adopt different degradation agents, the product obtained is also different, chemical reaction liquid more complicated, and therefore, the method is also the focus that chemical door is studied always.

The production of existing PAUR sole is all directly produce from Materials Co., Ltd's purchase polyalcohol (A material) and isocyanates (B material) usually, in production process scrap sole or waste material adopts chemical recovering method usually, in order to produce other chemical material, the such as patent No.: record in 201210108968.7, utilize waste polyurethane shoe sole production adipic acid.

Summary of the invention

The object of the application is to provide the recoverying and utilizing method that a kind of new PAUR scraps sole.

For achieving the above object, the application have employed following technical scheme:

This application discloses a kind of PAUR and scrap sole recoverying and utilizing method, the method comprises the following steps:

(A) PAUR is scrapped the fragment that sole is broken into diameter 10-20mm;

(B) with comminutor, fragment is pumped into bar, and is cut into the particle of 3-4mm;

(C) crouched at the standby sole waterproof platform of platform mechanism or the end or greatly egative film greatly by screw multigraph press or screw.

Preferably, in step (C), by screw multigraph press or screw crouch platform mechanism standby sole waterproof platform time, as preparing in the particle of material, namely add foam powder and swelling agent in the particle of 3-4mm that stripping is cut into, after mixing, go out sole waterproof platform by screw multigraph press or the screw platform mechanism that crouches again.

Preferably, the consumption of foam powder is 0.3%-0.6%.Preferably, select PVC air blowing swelling agent, the consumption of swelling agent is 0.6%-1.2%.

Owing to adopting above technical scheme, the beneficial effect of the application is:

The PAUR of the application scraps sole recoverying and utilizing method, the sole scrapped is broken into fixing size and stripping is cut into the particle of fixed size, then screw multigraph press or screw is adopted to crouch platform machine, the sole of the polyester type polyurethane material scrapped is reused for the sole that preparation is new, without the need to adding polyurethane virgin material, the waterproof platform or the large end or large egative film that make new advances directly can be prepared.Scrap sole and can again prepare the sole made new advances again after the recoverying and utilizing method of the application, avoid waste of material, also without the need to other chemical products of conversion preparation, simple to operate, environmental protection and saving, prepared product hydrolyzable environmentally safe.

In a preferred embodiment of the application, foam powder and swelling agent is also added when preparing waterproof platform, preferably, add the foam powder of 0.3%-0.6% and the PVC air blowing swelling agent of 0.6%-1.2%, make the waterproof platform prepared to reach instructions for use.

Detailed description of the invention

The recycling that sole scrapped by existing polyurethane mainly adopts chemical method to be prepared into other chemical material; And directly broken rear recycling is also mainly used for inserts or some low-grade goods because its material property is poor.Present inventor finds, PAUR be scrapped sole and recycle the preparation being used further to sole, its key is granulating technique; Propose after scrapping sole and being broken into the fragment of diameter 10-20 millimeter on this basis; first adopt comminutor that fragment is pumped into bar; and be cut into the particle of 3-4 millimeter; and then for the preparation of sole, the sole prepared thus can meet instructions for use, thus achieve and again prepare scrapping sole recycling the sole made new advances; concerning the enterprise producing sole; not only save cost, and environmental protection simple to operate, there is great improvement meaning.Wherein, the sole of preparation comprises sole waterproof platform, the large end or large egative film.

In a kind of implementation of the application, when preparing sole waterproof platform, also in the particle of recovery preparation, with the addition of the foam powder of 0.3%-0.6% and the PVC air blowing swelling agent of 0.6%-1.2%, to improve the surface property of the sole waterproof platform of preparation, improve its grinability.The foam powder of the application is a kind of the spheroid expanded, and adds, can reduce space, cavity and blemish before polyurethane solidifies again; Adding of swelling agent can, by compensate for shrinkage, minimizing cracking, make the sole waterproof platform prepared reach requirement.

Below by specific experiment example, the application is described in further detail.Following experimental example is only further detailed the application, should not be construed as the restriction to the application.

Embodiment

The recoverying and utilizing method that the PAUR of this example scraps sole comprises:

(A) PAUR is scrapped the fragment that sole is broken into diameter 10-20mm;

In this example, the particle of this 3-4mm is adopted to prepare sole waterproof platform, the large end and large egative film respectively.

When preparing the large end and large egative film, the particle of the 3-4mm prepared by employing directly makes the shaping large end and large egative film by screw multigraph press or the screw platform machine that crouches.When preparing sole waterproof platform, in the particle of 3-4mm, add the compound TPR sole specific high level foam powder of 0.3%-0.6% and the PVC air blowing swelling agent of 0.6%-1.2%, make shaping sole waterproof platform by screw multigraph press or the screw platform machine that crouches equally.

The recoverying and utilizing method of this example, simple to operation, by specific granulating technique, make the PAUR reclaimed can be directly used in the preparation of sole, and, the sole environmental protection of preparing, hydrolyzable, environmentally safe.

Above content is the further description done the application in conjunction with concrete embodiment, can not assert that the concrete enforcement of the application is confined to these explanations.For the application person of an ordinary skill in the technical field, under the prerequisite not departing from the application's design, some simple deduction or replace can also be made, all should be considered as the protection domain belonging to the application.

Claims

1. PAUR scraps a sole recoverying and utilizing method, it is characterized in that: comprise the following steps:

(A) PAUR is scrapped the fragment that sole is broken into diameter 10-20mm;

(B) with comminutor, described fragment is pumped into bar at 185 DEG C of-195 DEG C of temperature, and is cut into the particle of 3-4mm;

2. method according to claim 1, is characterized in that: in described step (C), is crouched in the process of the standby sole waterproof platform of platform mechanism, add foam powder and swelling agent in its granular materials by screw multigraph press or screw.

3. method according to claim 2, is characterized in that: the consumption of described foam powder is 0.3%-0.6%.

4. method according to claim 2, is characterized in that: the consumption of described swelling agent is 0.6%-1.2%.