CN113861534A - Method for making sole by using leather waste - Google Patents

Method for making sole by using leather waste Download PDF

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Publication number
CN113861534A
CN113861534A CN202111180197.8A CN202111180197A CN113861534A CN 113861534 A CN113861534 A CN 113861534A CN 202111180197 A CN202111180197 A CN 202111180197A CN 113861534 A CN113861534 A CN 113861534A
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CN
China
Prior art keywords
leather
thermoplastic
leather waste
rubber
die
Prior art date
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Pending
Application number
CN202111180197.8A
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Chinese (zh)
Inventor
阿兰尼·贝克尔·玛德
安娜·罗克萨娜·格林瓦尔德
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Merak Asia Ltd
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Merak Asia Ltd
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Publication date
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Priority to CN202111180197.8A priority Critical patent/CN113861534A/en
Publication of CN113861534A publication Critical patent/CN113861534A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/06—Copolymers with styrene
    • 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
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The invention discloses a method for making soles by using leather waste, which comprises the steps of grinding and mixing the leather waste, rubber and thermoplastic plastics, putting the mixture into a milling machine for milling, and finally adding the mixture into a die for die-casting and forming. Compared with the prior art, the invention has the beneficial effects that: the leather waste and the recyclable thermoplastic plastic are ground, mixed and then milled to obtain a mixture capable of being directly molded, and meanwhile, the mixture can be directly produced by die casting or injection molding without an adhesive, so that the production efficiency is improved, and the production cost is reduced.

Description

Method for making sole by using leather waste
Technical Field
The invention relates to the technical field of sole production, in particular to a method for manufacturing a sole by using leather waste.
Background
Due to the development of the clothing industry, more and more waste materials including cloth, leather waste, leftover materials and leftover materials are generated in clothing factories of shoe factories. And waste bags, leather bags, cloth bags, canvas bags and the like discarded in daily life can cause air pollution if being directly burned by a garbage pile. In order to effectively utilize the renewable resources, the waste materials and the leftover materials are collected and stored for recycling.
The chromium-containing solid wastes Cr 3-4% and Pr more than 90%, because the wastes contain chemical elements of N, P, S, K, Ca, Mg, Cr, Fe, Al, etc., the fertilizer thus produced can increase the yield of rice by 18% and the yield of wheat by 36%. The fleshed waste residue (the more oil the better) can be made into methane, and the byproduct is high-quality organic nitrogen fertilizer.
Preparing leather fatting agent and degreasing agent from waste grease; the cow hair can be directly used as protein coating agent after controlled hydrolysis, has good brightness and polishing resistance, and can also be directly used as anti-sticking agent for embossing and ironing skin. The ox hair can be used as a modified material for crosslinking and grafting the high polymer material after hydrolysis. The cow hair can also be made into collagen-modified coating agent, such as: acrylic, polyurethane, butadiene, and the like.
The blue leather fiber can be made into regenerated leather and non-woven fabrics; hydrolyzing and spinning the leather edge to prepare a hygroscopic collagen blended fabric; the hair can be directly used for spinning, making carpet, making felt, writing brush and making brush. The leather waste can be made into pet toy and chewing matter, or high-grade protein and refined collagen. The leather solid waste is mixed with synthetic high molecular material, copolymerized to prepare degradable plastics, and combined with fibre material to prepare degradable lunch box, etc.
Patent publication No. CN110918424A discloses a sheet structure of recycled leather, comprising a substrate, an adhesive and a plurality of recycled leather particles; the adhesive covers the surface of the base material; the skin particles are fixed on the surface of the substrate by an adhesive. Wherein the recycled leather particles are produced by shearing and grinding waste leather or leather scraps; and the recycled leather particles can be dyed into leather particles with various colors by using dyes. The regenerated leather is used as a base material, regenerated leather particles are combined together by using an adhesive, the adhesive is used as a new layer to cover the surface of the base material, the leather particles are fixed on the surface of the base material by the adhesive, the regenerated leather particles are formed by cutting and grinding waste leather or leather leftover materials, and the recycled leather particles can be dyed into the leather particles. There is no combination of recyclable leather and recyclable thermoplastics into a directly moldable mixture and an adhesive is required.
Disclosure of Invention
The present invention is directed to a method for making a sole using leather waste to solve the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme that the raw materials comprise leather waste, rubber and thermoplastic plastics, and the production steps are as follows:
the method comprises the following steps: classifying and splitting the leather waste according to colors, and grinding the obtained leather waste to obtain leather powder for later use; grinding the thermoplastic to obtain thermoplastic fragments for later use;
step two: uniformly mixing leather powder, rubber and thermoplastic fragments, and putting the mixture into a milling machine for milling to obtain a base material;
step three: and D, placing the base material obtained in the step two on a die frame for cutting, then placing the base material into a die, and feeding the base material into a forming machine for die-casting forming to obtain a finished product.
As a preferred technical scheme of the invention, the leather powder grinding size in the first step is 0.2-0.5 mm; the ground size of the thermoplastic chips is 0.5 to 3 mm.
As a preferred technical solution of the present invention, the weight ratio of the leather powder to the rubber and thermoplastic plastic chips in the second step is: leather 0.5-25 wt% and rubber and thermoplastic plastic chips 75-99.5 wt%.
As a preferable technical scheme of the invention, the rubber is Styrene Butadiene Rubber (SBR), and the thermoplastic plastic is one of EVA, PVC, polyethylene, polycarbonate and polypropylene.
As a preferred technical scheme of the invention, the time of milling in the second step is 5-20min, and the milling temperature is 170-200 ℃.
As a preferred technical scheme of the invention, in the second step, the die-casting molding can be one of vacuum molding, injection molding or traditional molding machines.
As a preferred technical scheme of the invention, the time for molding and processing in the third step is 5-20min, and the molding temperature is 170-200 ℃.
As a preferable technical scheme of the invention, the finished product obtained by die-casting in the step three can be a sole, a midsole or other shoe accessories.
Compared with the prior art, the invention has the beneficial effects that: the leather waste and the recyclable thermoplastic plastic are ground, mixed and then milled to obtain a mixture capable of being directly molded, and meanwhile, the mixture can be directly produced by die casting or injection molding without an adhesive, so that the production efficiency is improved, and the production cost is reduced.
Drawings
FIG. 1 is a flow chart of the present invention;
Detailed Description
Example 1
The invention discloses a method for making soles by using leather waste, which comprises the following steps of raw materials of leather waste, rubber and thermoplastic plastics:
the method comprises the following steps: classifying and splitting the leather waste according to colors, and grinding the obtained leather waste to obtain leather powder for later use; grinding the thermoplastic to obtain thermoplastic fragments for later use;
step two: uniformly mixing leather powder, rubber and thermoplastic fragments, and putting the mixture into a milling machine for milling to obtain a base material;
step three: and D, placing the base material obtained in the step two on a die frame for cutting, then placing the base material into a die, and feeding the base material into a forming machine for die-casting forming to obtain a finished product.
As a preferred technical scheme of the invention, the grinding size of the leather powder in the first step is 0.2 mm; the ground size of the thermoplastic chips was 0.5 mm.
As a preferred technical solution of the present invention, the weight ratio of the leather powder to the rubber and thermoplastic plastic chips in the second step is: leather 0.5%, rubber and thermoplastic chips 99.5%.
The rubber is Styrene Butadiene Rubber (SBR), and the thermoplastic plastic is EVA.
As a preferable technical scheme of the invention, the milling time in the second step is 5min, and the milling temperature is 170 ℃.
As a preferred technical scheme of the invention, the die-casting molding in the second step can adopt a vacuum forming machine.
As a preferable technical scheme of the invention, the time for molding processing in the third step is 5min, and the molding temperature is 170 ℃.
As a preferable technical scheme of the invention, the finished product obtained by die-casting in the third step is the sole.
Example 2
The invention discloses a method for making soles by using leather waste, which comprises the following steps of raw materials of leather waste, rubber and thermoplastic plastics:
the method comprises the following steps: classifying and splitting the leather waste according to colors, and grinding the obtained leather waste to obtain leather powder for later use; grinding the thermoplastic to obtain thermoplastic fragments for later use;
step two: uniformly mixing leather powder, rubber and thermoplastic fragments, and putting the mixture into a milling machine for milling to obtain a base material;
step three: and D, placing the base material obtained in the step two on a die frame for cutting, then placing the base material into a die, and feeding the base material into a forming machine for die-casting forming to obtain a finished product.
As a preferred technical scheme of the invention, the leather powder grinding size in the first step is 0.5 mm; the ground size of the thermoplastic chips was 3 mm.
As a preferred technical solution of the present invention, the weight ratio of the leather powder to the rubber and thermoplastic plastic chips in the second step is: 25% of leather and 75% of rubber and thermoplastic fragments.
The rubber is Styrene Butadiene Rubber (SBR), and the thermoplastic plastic is PVC.
As a preferable technical scheme of the invention, the milling time in the second step is 20min, and the milling temperature is 200 ℃.
As a preferred technical scheme of the invention, the die-casting molding in the second step can be an injection molding machine.
As a preferable technical scheme of the invention, the time for molding processing in the third step is 20min, and the molding temperature is 200 ℃.
As a preferred technical scheme of the invention, the finished product obtained by die casting in the third step is a midsole.
Example 3
The invention discloses a method for making soles by using leather waste, which comprises the following steps of raw materials of leather waste, rubber and thermoplastic plastics:
the method comprises the following steps: classifying and splitting the leather waste according to colors, and grinding the obtained leather waste to obtain leather powder for later use; grinding the thermoplastic to obtain thermoplastic fragments for later use;
step two: uniformly mixing leather powder, rubber and thermoplastic fragments, and putting the mixture into a milling machine for milling to obtain a base material;
step three: and D, placing the base material obtained in the step two on a die frame for cutting, then placing the base material into a die, and feeding the base material into a forming machine for die-casting forming to obtain a finished product.
As a preferred technical scheme of the invention, the leather powder grinding size in the first step is 0.4 mm; the ground size of the thermoplastic chips was 1.5 mm.
As a preferred technical solution of the present invention, the weight ratio of the leather powder to the rubber and thermoplastic plastic chips in the second step is: leather 20%, rubber and thermoplastic chips 80%.
The rubber is Styrene Butadiene Rubber (SBR), and the thermoplastic plastic is polyethylene.
As a preferable technical scheme of the invention, the milling time in the second step is 10min, and the milling temperature is 180 ℃.
As a preferred technical scheme of the invention, in the second step, a transmission forming machine is selected for die-casting forming.
As a preferable technical scheme of the invention, the time for molding processing in the third step is 15min, and the molding temperature is 190 ℃.
As a preferable technical scheme of the invention, the finished product obtained by die-casting in the third step is other shoe accessories.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore are not to be construed as limiting the invention, and further, the terms "first", "second", etc., are used only for descriptive purposes and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features indicated, whereby the features defined as "first", "second", etc., may explicitly or implicitly include one or more of such features, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements, and the specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations
Although the present invention has been described in detail with reference to the specific embodiments, the present invention is not limited to the above embodiments, and various changes and modifications without inventive changes may be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.

Claims (8)

1. A method for making sole with leather waste, the raw material includes leather waste, rubber, thermoplastic plastics, its production step is as follows:
the method comprises the following steps: classifying and splitting the leather waste according to colors, and grinding the obtained leather waste to obtain leather powder for later use; grinding the thermoplastic to obtain thermoplastic fragments for later use;
step two: uniformly mixing leather powder, rubber and thermoplastic fragments, and putting the mixture into a milling machine for milling to obtain a base material;
step three: and D, placing the base material obtained in the step two on a die frame for cutting, then placing the base material into a die, and feeding the base material into a forming machine for die-casting forming to obtain a finished product.
2. A method for making soles from leather waste according to claim 1, characterized in that: the grinding size of the leather powder in the first step is 0.2-0.5 mm; the ground size of the thermoplastic chips is 0.5 to 3 mm.
3. A method for making soles from leather waste according to claim 2, characterized in that: the weight ratio of the leather powder to the rubber and thermoplastic plastic chips in the second step is as follows: leather 0.5-25 wt% and rubber and thermoplastic plastic chips 75-99.5 wt%.
4. A method for making soles from leather waste according to claim 3, characterized in that: the rubber is Styrene Butadiene Rubber (SBR), and the thermoplastic plastic is one of EVA, PVC, polyethylene, polycarbonate and polypropylene.
5. A method for making soles from leather waste according to claim 4, characterized in that said method comprises the following steps: the milling time in the second step is 5-20min, and the milling temperature is 170-200 ℃.
6. A method for making soles from leather waste according to claim 5, characterized in that said method comprises the following steps: in the second step, the die-casting molding can be one of vacuum molding, injection molding or traditional molding machine.
7. A method of making a sole using leather waste according to claim 6, wherein: the time for molding and processing in the third step is 5-20min, and the molding temperature is 170-200 ℃.
8. A method of making a sole using leather waste according to claim 6, wherein: the finished product obtained by die-casting in the third step can be a sole, a middle sole or other shoe accessories.
CN202111180197.8A 2021-10-11 2021-10-11 Method for making sole by using leather waste Pending CN113861534A (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
CN202111180197.8A CN113861534A (en) 2021-10-11 2021-10-11 Method for making sole by using leather waste

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4834762A (en) * 1986-08-07 1989-05-30 Ein (America) Inc. Animal protein resin-plastic compositions and manufactures incorporating animal skins and/or leather and/or gelatin powder therein, the powder therein, and method of producing the same
US4858337A (en) * 1985-10-04 1989-08-22 La Crosse Footwear, Inc. Vulcanized rubber footwear product
CA1260256A (en) * 1985-10-04 1989-09-26 Tarachand S. Barma Vulcanized rubber footwear product
US20090249656A1 (en) * 2008-04-08 2009-10-08 Brown Shoe Company, Inc. Shoe sole and method
CN112063036A (en) * 2020-09-23 2020-12-11 中国皮革制鞋研究院有限公司 Protein filler composite EVA (ethylene-vinyl acetate copolymer) foamed shoe material and preparation method thereof
CN112848611A (en) * 2020-12-24 2021-05-28 北京服装学院 Recycling process of leather waste

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4858337A (en) * 1985-10-04 1989-08-22 La Crosse Footwear, Inc. Vulcanized rubber footwear product
CA1260256A (en) * 1985-10-04 1989-09-26 Tarachand S. Barma Vulcanized rubber footwear product
US4834762A (en) * 1986-08-07 1989-05-30 Ein (America) Inc. Animal protein resin-plastic compositions and manufactures incorporating animal skins and/or leather and/or gelatin powder therein, the powder therein, and method of producing the same
US20090249656A1 (en) * 2008-04-08 2009-10-08 Brown Shoe Company, Inc. Shoe sole and method
CN112063036A (en) * 2020-09-23 2020-12-11 中国皮革制鞋研究院有限公司 Protein filler composite EVA (ethylene-vinyl acetate copolymer) foamed shoe material and preparation method thereof
CN112848611A (en) * 2020-12-24 2021-05-28 北京服装学院 Recycling process of leather waste

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
虞福荣: "《橡胶模具实用手册》", 31 December 1996, 化学工业出版社 *
詹明荣: "《铣工现场操作技能》", 31 May 2008, 国防工业出版社 *

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Application publication date: 20211231