CN114073357A - Environment-friendly shoe material and preparation method thereof - Google Patents
Environment-friendly shoe material and preparation method thereof Download PDFInfo
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- CN114073357A CN114073357A CN202010835744.0A CN202010835744A CN114073357A CN 114073357 A CN114073357 A CN 114073357A CN 202010835744 A CN202010835744 A CN 202010835744A CN 114073357 A CN114073357 A CN 114073357A
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- Prior art keywords
- shoe material
- environment
- friendly
- scraps
- shoe
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
Abstract
The invention relates to an environment-friendly shoe material and a preparation method thereof, wherein the preparation method comprises the following steps: mixing the scrap with a foamed material to provide a shoe material mixture, the scrap comprising PET plastic bottle scrap crushed from PET plastic bottles; adding the shoe material mixture into a mold, and performing compression molding to produce the environment-friendly shoe material; and separating the environment-friendly shoe material from the mold. Therefore, the shoe parts made of the environment-friendly shoe material can also protect the environment while maintaining the required functionality.
Description
Technical Field
The invention relates to shoes, in particular to an environment-friendly shoe material and a preparation method thereof.
Background
With the progress of science and technology and the rising awareness of environmental protection, more and more manufacturers on the market begin to utilize resource recycling materials or recycling waste materials as materials for manufacturing products. However, most of the soles of the existing shoes on the market, such as sports shoes, sandals, slippers, leisure shoes, etc., are made of a single material, such as rubber with good wear resistance and elasticity. Therefore, how to apply the recycled waste to the sole of the shoe as one of the materials for manufacturing the sole is a problem to be solved at present.
Disclosure of Invention
Therefore, the invention mainly aims to provide an environment-friendly shoe material which can maintain due functions and is environmentally friendly and a preparation method thereof.
The invention provides a preparation method of an environment-friendly shoe material according to an embodiment, which comprises the following steps: mixing the scrap with a foamed material to provide a shoe material mixture, the scrap comprising PET plastic bottle scrap crushed from PET plastic bottles; adding the shoe material mixture into a mold, and performing compression molding to produce the environment-friendly shoe material; and separating the environment-friendly shoe material from the mold.
In another embodiment, the above method further comprises: heating the mold.
In another embodiment, the chips further comprise paper chips, wood chips, plant residues, coffee grounds, waste foamed plastic chips, or a combination thereof.
In yet another embodiment, the step of mixing the debris with the foamed material to provide the shoe material mixture comprises: mixing the crumb, catalyst and thermoset polyurethane elastomer to provide a first mixture; and mixing water with the first mixture to provide the shoe material mixture, the catalyst, the water, and the thermosetting polyurethane elastomer being mixed to produce the foamed material.
In yet another embodiment, in the foam material, the catalyst is 15 to 20 wt%, the water is 10 to 20 wt%, and the thermosetting polyurethane elastomer is 60 to 70 wt%. Alternatively, the ratio of the catalyst, the water, and the thermosetting polyurethane elastomer is 20: 20: 60 or 15: 10: 75.
in yet another embodiment, the foaming material is liquid rubber.
In another embodiment, the above method further comprises: placing a thermoplastic polyurethane film into said mold; and coating the shoe material mixture with the thermoplastic polyurethane film to perform compression molding and produce the environment-friendly shoe material.
The invention further provides an environment-friendly shoe material which is suitable for being made into a part of a shoe, the environment-friendly shoe material comprises scraps and an elastic material, and the scraps comprise PET plastic bottle scraps formed by crushing PET plastic bottles.
In another embodiment, the environmentally friendly shoe material further comprises paper scraps.
In yet another embodiment, the elastic material comprises a rubber or thermoset polyurethane elastomer.
In other embodiments of the present invention, the content of the crumbs is 30 to 60 wt%.
In other embodiments of the present invention, the size of the PET plastic bottle scraps is 2-8 mm.
In other embodiments of the present invention, the environmentally friendly shoe material further comprises a thermoplastic polyurethane elastic layer as a surface of the environmentally friendly shoe material.
Therefore, the environment-friendly shoe material provided by the invention not only can maintain the due functionality, but also can protect the environment.
Drawings
FIG. 1 is a flow chart of a method for manufacturing an environmentally friendly shoe material according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for manufacturing an environmentally friendly shoe material according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for manufacturing an environmentally friendly shoe material according to an embodiment of the present invention;
FIG. 4 is a flow chart of a method for manufacturing an environmentally friendly shoe material according to an embodiment of the present invention;
FIG. 5A is a plan view of a shoe material applied to a shoe sole according to an embodiment of the present invention; and
FIG. 5B is a cross-sectional view of FIG. 5A taken along section line 5B-5B.
Description of the symbols in the drawings:
10 elastic material
20: crumbs
30 thermoplastic polyurethane layer
Detailed Description
The technical solutions of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be understood by those of ordinary skill in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures and/or components have not been described in detail so as not to obscure the present invention.
The invention will be more clearly understood from the following description of embodiments of the invention, given by way of example only, with reference to the accompanying drawings, which are not drawn to scale.
The preparation method of the environment-friendly shoe material provided by the invention can be applied to the manufacturing of parts of shoes. For example, the method for preparing the environment-friendly shoe material provided by the invention can be applied to the manufacturing of soles of shoes. In order to clearly illustrate the spirit of the present invention, the following description will be given taking as an example the application of the preparation method to the manufacture of soles for shoes.
Referring to fig. 1, the present invention provides a method for manufacturing an environment-friendly shoe material according to an embodiment. In the manufacturing method, first, in step S10, the crumbs and the foaming material are mixed to provide a shoe material mixture. In this or other embodiments, the scraps may be scraps made of recycled environmental materials, such as plastic scraps, paper scraps, wood scraps, plant scraps, coffee grounds, scraps of other recycled environmental materials, or any combination thereof. The plastic scrap may be, for example, crushed from PET plastic bottles, bottle caps, or both, or crushed from waste foamed plastic (e.g., Ethylene-Vinyl Acetate Copolymer, EVA). The size of the plastic chips may be, for example, a size visible to the human eye, for example, 2 to 8mm, but the present invention is not limited thereto. And the foamed material may be, for example, liquid rubber. The content of the crumbs may be, for example, 30 to 60 weight percent, and the content of the foaming material may be, for example, 70 to 40 weight percent. The added foam is mixed with the crumbs so that the crumbs are adhered and uniformly or non-uniformly dispersed in the foam.
Next, in step S12, the shoe material mixture is put into a mold and compression molded to produce the shoe material. Further, the mold may be compression molded at room temperature (i.e., without heating). Finally, in step S14, the shoe material is released from the mold.
The shoe sole manufactured through the above-described manufacturing method may include the elastic material 10 and the crumbs 20 as shown in fig. 5A and 5B. The elastic material 10 is rubber obtained by curing liquid rubber added as a foaming material in the step S10. The debris is the debris added in step S10. As can be seen, dispersing the debris in the foam material at step S10 allows the elastomer material 10 formed after curing of the foam material to cover the debris 20 and to distribute the debris 20 uniformly or non-uniformly in the sole. The debris 20 distributed in the sole is visible to the human eye.
In another embodiment, the above-mentioned preparation method may further heat the mold, as shown in step S11 shown in fig. 2. For example, the mold is heated to 50-60 degrees. Therefore, the forming efficiency of the shoe material can be accelerated, and the stability of the finished product can be enhanced. Although step S11 is performed after step S10 in fig. 2, the present invention is not limited thereto. In other embodiments, step S11 may be performed before step S10, or simultaneously with step S12.
The above embodiment is described by taking liquid rubber as an example of the foaming material, but the invention is not limited thereto, and the foaming material may be replaced by other materials. For example, referring to fig. 3, in step S20, the scraps are mixed with the foaming material to provide a shoe material mixture. Specifically, step S20 includes the following steps.
In step S201, the crumb, a catalyst, and a thermoset Polyurethane Elastomer (TSU) are mixed to provide a first mixture. The debris may, for example, be debris made of environmentally recycled material, such as plastic debris, paper debris, debris of other environmentally recycled material, or any combination thereof. The plastic scrap may be, for example, crushed from PET plastic bottles, bottle caps, or both. The size of the plastic chips may be, for example, a size visible to the human eye, for example, 2 to 8mm, but the present invention is not limited thereto. The catalyst may, for example, be Triethylenediamine (Triethylenediamine).
Next, in step S202, water is mixed with the first mixture to provide a shoe material mixture. The catalyst, water and thermoset polyurethane elastomer are mixed to produce the foamed material described above. In the foaming material, the content of the catalyst can be, for example, 15 to 20 weight percent, the content of the water can be, for example, 10 to 20 weight percent, and the content of the thermosetting polyurethane elastomer can be, for example, 60 to 70 weight percent. Specifically, the ratio (content) of the catalyst, water and the thermosetting polyurethane elastomer may be, for example, 20: 20: 60 or 15: 10: 75 (weight percent). The content of the crumbs may be, for example, 30 to 60 weight percent, and the content of the foaming material may be, for example, 70 to 40 weight percent. The added foam is mixed with the crumbs so that the crumbs are adhered and uniformly or non-uniformly dispersed in the foam.
After forming the shoe material mixture, the above shoe material mixture is put into a mold and compression molded to produce a shoe material in step S22. Further, the mold may be compression molded at room temperature (i.e., without heating). Finally, in step S24, the shoe material is released from the mold.
In another embodiment, the above-mentioned preparation method may further heat the mold, as shown in step S21 shown in fig. 4. For example, the mold may be heated to a temperature greater than about 80 degrees and up to 150 degrees. In the case where the mold was heated to 100 degrees, 1.5 hours was required for compression molding. In the case where the mold is heated to 150 degrees, the press molding takes 1 hour. Therefore, the forming efficiency of the shoe material can be accelerated, and the stability of the finished product can be enhanced. Although step S21 is performed after step S20 in fig. 4, the present invention is not limited thereto. In other embodiments, step S21 may be performed before step S20, or simultaneously with step S22.
In other embodiments of the present invention, the step S12 (or S22) may include the following steps. First, a film of Thermoplastic Polyurethane (TPU) is placed in a mold. Then, the shoe material mixture is added on the thermoplastic polyurethane film in the mould, and the thermoplastic polyurethane film covers the whole shoe material mixture. Finally, compression molding is performed to produce the shoe material. Thus, the surface of the finished shoe material will have a thermoplastic polyurethane layer, such as thermoplastic polyurethane layer 30 shown in FIG. 5B. Therefore, the formed shoe material can be demolded more easily, and the wear resistance and the physical property of deflection of the finished shoe material can be enhanced.
In summary, the above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (13)
1. A preparation method of an environment-friendly shoe material is characterized by comprising the following steps:
mixing the scrap with a foamed material to provide a shoe material mixture, the scrap comprising PET plastic bottle scrap crushed from PET plastic bottles;
adding the shoe material mixture into a mold, and performing compression molding to produce the environment-friendly shoe material; and
and separating the environment-friendly shoe material from the mold.
2. The method of claim 1, wherein the scraps further comprise paper scraps, wood scraps, plant scraps, coffee grounds, waste foamed plastic fragments, or a combination thereof.
3. The method for preparing environment-friendly shoe material according to claim 1, wherein the foaming material is liquid rubber.
4. The method of claim 1, wherein the step of mixing the crumbs with the foaming material to provide the shoe material mixture comprises:
mixing the crumb, catalyst and thermoset polyurethane elastomer to provide a first mixture; and
mixing water with the first mixture to provide the shoe material mixture, the catalyst, the water, and the thermoset polyurethane elastomer mixing to produce the foamed material.
5. The method for preparing the environment-friendly shoe material as claimed in claim 4, wherein the foaming material contains 15 to 20 weight percent of the catalyst, 10 to 20 weight percent of the water and 60 to 70 weight percent of the thermosetting polyurethane elastomer.
6. The method for preparing environment-friendly shoe material according to claim 4, wherein the ratio of the catalyst, the water and the thermosetting polyurethane elastomer in the foaming material is 20: 20: 60 or 15: 10: 75.
7. the method for preparing environment-friendly shoe material according to claim 1, wherein the content of the crumbs in the shoe material mixture is 30-60 wt%.
8. The method for preparing environment-friendly shoe material according to claim 1, further comprising:
placing a thermoplastic polyurethane film into said mold; and
and coating the shoe material mixture with the thermoplastic polyurethane film to perform compression molding and produce the environment-friendly shoe material.
9. An environment-friendly shoe material suitable for being made into a part of a shoe is characterized by comprising scraps and an elastic material, wherein the scraps comprise PET plastic bottle scraps formed by crushing PET plastic bottles.
10. The environmentally friendly footwear material of claim 9, wherein the debris further comprises paper dust, wood dust, plant residue, coffee grounds, waste foamed plastic fragments, or a combination thereof.
11. The environmentally friendly footwear material of claim 9, wherein the elastic material comprises a rubber or thermoset polyurethane elastomer.
12. The environmentally friendly shoe material of claim 9, wherein the amount of the crumbs is 30 to 60 weight percent.
13. The environmentally friendly shoe material of claim 9, further comprising a thermoplastic polyurethane elastic layer as a surface of the environmentally friendly shoe material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835744.0A CN114073357A (en) | 2020-08-19 | 2020-08-19 | Environment-friendly shoe material and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010835744.0A CN114073357A (en) | 2020-08-19 | 2020-08-19 | Environment-friendly shoe material and preparation method thereof |
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| CN114073357A true CN114073357A (en) | 2022-02-22 |
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| CN202010835744.0A Pending CN114073357A (en) | 2020-08-19 | 2020-08-19 | Environment-friendly shoe material and preparation method thereof |
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|---|---|---|---|---|
| CN1220853A (en) * | 1997-12-24 | 1999-06-30 | 林鸿祺 | Shoe-pad with massage effect and manufacture method |
| CN1310081A (en) * | 2000-02-24 | 2001-08-29 | 大升化工股份有限公司 | Regenerated shoe material |
| CN101537688A (en) * | 2009-04-20 | 2009-09-23 | 东莞兴泰鞋材有限公司 | Shoe material processing method |
| CN101573406A (en) * | 2006-11-01 | 2009-11-04 | 陶氏环球技术公司 | Polyurethane compositions and articles prepared therefrom, and methods for making the same |
| CN102229751A (en) * | 2011-06-30 | 2011-11-02 | 殷正福 | Straw compound foamed shoe material and production processing method thereof |
| CN104817762A (en) * | 2015-05-04 | 2015-08-05 | 泰亚鞋业股份有限公司 | Environment-friendly EVA foaming shoe material and manufacturing method thereof |
| US20190366590A1 (en) * | 2018-05-31 | 2019-12-05 | Nike, Inc. | Articles of footwear, manufacturing systems, and processes for forming footwear using recycled plastics |
| CN111499829A (en) * | 2020-05-08 | 2020-08-07 | 浙江倪阮新材料有限公司 | Environment-friendly odorless foaming sole material and method for preparing sole by using same |
| CN111513421A (en) * | 2020-05-05 | 2020-08-11 | 泉州市华登新材料科技有限公司 | Waste sole recycling method, shoe component finished product and shoe product |
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2020
- 2020-08-19 CN CN202010835744.0A patent/CN114073357A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220853A (en) * | 1997-12-24 | 1999-06-30 | 林鸿祺 | Shoe-pad with massage effect and manufacture method |
| CN1310081A (en) * | 2000-02-24 | 2001-08-29 | 大升化工股份有限公司 | Regenerated shoe material |
| CN101573406A (en) * | 2006-11-01 | 2009-11-04 | 陶氏环球技术公司 | Polyurethane compositions and articles prepared therefrom, and methods for making the same |
| CN101537688A (en) * | 2009-04-20 | 2009-09-23 | 东莞兴泰鞋材有限公司 | Shoe material processing method |
| CN102229751A (en) * | 2011-06-30 | 2011-11-02 | 殷正福 | Straw compound foamed shoe material and production processing method thereof |
| CN104817762A (en) * | 2015-05-04 | 2015-08-05 | 泰亚鞋业股份有限公司 | Environment-friendly EVA foaming shoe material and manufacturing method thereof |
| US20190366590A1 (en) * | 2018-05-31 | 2019-12-05 | Nike, Inc. | Articles of footwear, manufacturing systems, and processes for forming footwear using recycled plastics |
| CN111513421A (en) * | 2020-05-05 | 2020-08-11 | 泉州市华登新材料科技有限公司 | Waste sole recycling method, shoe component finished product and shoe product |
| CN111499829A (en) * | 2020-05-08 | 2020-08-07 | 浙江倪阮新材料有限公司 | Environment-friendly odorless foaming sole material and method for preparing sole by using same |
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