CN111513422A - Glue-free foamed sole and manufacturing method thereof - Google Patents

Glue-free foamed sole and manufacturing method thereof Download PDF

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Publication number
CN111513422A
CN111513422A CN202010349281.7A CN202010349281A CN111513422A CN 111513422 A CN111513422 A CN 111513422A CN 202010349281 A CN202010349281 A CN 202010349281A CN 111513422 A CN111513422 A CN 111513422A
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CN
China
Prior art keywords
layer
glue
sole
wear
film layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010349281.7A
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Chinese (zh)
Inventor
吴文杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Pengjun New Materials Technology Co ltd
Original Assignee
Guangdong Pengjun New Materials Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Guangdong Pengjun New Materials Technology Co ltd filed Critical Guangdong Pengjun New Materials Technology Co ltd
Priority to CN202010349281.7A priority Critical patent/CN111513422A/en
Publication of CN111513422A publication Critical patent/CN111513422A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • A43B13/12—Soles with several layers of different materials
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1271—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed parts being partially covered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
    • B29C44/145—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining the lining being a laminate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0278—Polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2437/00—Clothing
    • B32B2437/02—Gloves, shoes

Abstract

The invention belongs to the field of manufacturing processes of foamed shoe soles, and particularly relates to a glue-free foamed shoe sole which comprises a wear-resistant layer bottom sheet, wherein a thin film layer is bonded on the wear-resistant layer bottom sheet, a foaming layer is wrapped in the thin film layer, and the thin film layer is of a double-layer structure of an aliphatic TPU layer or an aliphatic TPU bottom layer compounded with an aromatic TPU surface layer and other common TPU surface layers. In addition, a corresponding manufacturing method is correspondingly provided. The aliphatic TPU film is adopted, has extremely strong viscosity after being heated and softened, can be directly and stably adhered to the sole without glue, effectively avoids the pollution caused by using the glue as an adhesive, is environment-friendly, saves manpower, is convenient to popularize and apply, and has remarkable substantive characteristics.

Description

Glue-free foamed sole and manufacturing method thereof
Technical Field
The invention relates to the field of manufacturing processes of foamed soles, in particular to a glue-free film-absorbing polyurethane sole and a manufacturing method thereof.
Background
The shoes are daily necessities of everybody, and are in the consideration in the aspects of comfort level, environmental protection, health and the like, people in life prefer to select shoes and boots with certain styles and better materials, the shoes with good looking styles can improve personal image and improve life taste, the quality of the shoe materials can influence the exertion of athletic ability, and can influence the body health, and the quality of the shoe materials can also determine the consumption of physical energy of people in the same exercise intensity.
The production steps of the foamed soles on the market at present are generally that a sole bottom sheet (such as a sole wear-resistant layer) which is processed and formed is put into a shoe mould, then glue is brushed or sprayed on the surface of the bottom sheet, then the bottom sheet is put into a mould bottom mould, then a thin film is put on the mould bottom mould, the thin film is heated and softened and vacuumized to cover the bottom sheet and the inner surface of the mould, a foaming material is injected into the thin film (bottom mould), then the shoe mould is sealed to be heated and foamed, and finally the foamed and formed soles are obtained. However, the smell of the glue is large, the glue needs to be matched with corresponding ventilation equipment during use, the health and the environmental protection of workers are not facilitated, the glue overflowing from the sole needs to be cleaned in a time-consuming and labor-consuming manner, and the production cost is increased.
Disclosure of Invention
In order to solve the problems that glue is adopted to bond the sole and a film wrapping a foaming material above the sole in the manufacturing process of a common foaming sole, the peculiar smell of the glue needs to be discharged by a matched ventilation device, the overflowed glue needs to be cleaned in time and labor, the environment is not protected, and the production cost is reduced, the glue-free foaming sole and the manufacturing method thereof are provided.
The glue-free foamed sole comprises a wear-resistant layer bottom sheet, wherein a thin film layer is bonded on the wear-resistant layer bottom sheet, a foaming layer is wrapped in the thin film layer, and the thin film layer is an aliphatic TPU layer.
Further, the film layer is an aliphatic TPU layer and a film base layer which are pressed together, the aliphatic TPU layer is fixedly bonded with the bottom sheet of the wear-resistant layer, and the film base layer is wrapped with a foaming layer.
The glue-free foaming sole with the double-layer film comprises the following steps:
the method comprises the following steps: producing an aliphatic TPU layer by using casting equipment, and then covering and fixing a film base layer on the surface of the aliphatic TPU layer by using the casting equipment or laminating equipment to form a film layer with a double-layer structure;
step two: putting the wear-resistant layer substrate into a bottom die, putting the thin film layer on the bottom die, enabling the aliphatic TPU layer to face downwards, and drying the thin film layer;
step three: vacuumizing the mould to enable the film layer to be adsorbed on the bottom sheet of the wear-resistant layer and the surface of the mould, and mutually adhering the film layer and the bottom sheet of the wear-resistant layer;
step four: filling a foaming material on the film layer, closing the mould, conveying the mould into a forming production line for heat preservation, foaming the foaming material wrapped in the film layer, tightly wrapping the foaming material by the film layer in a foaming process, and demoulding after the sole is cured;
step five: and trimming and finishing the demoulded finished product sole, and packaging and warehousing after the finished product sole is qualified.
Furthermore, the film base layer is made of aromatic TPU film.
Further, the foaming material is a polyurethane foaming material.
Further, the heat-insulating time in the fourth step is 5 min.
The scheme of the invention has the advantages that:
1. the firm bonding of the film and the sole can be realized without using glue, the pollution caused by using the glue is avoided, and the environment is protected.
2. The production and processing efficiency is high.
3. Saving material and reducing labor cost.
4. The aliphatic TPU layer wrapped on the outer side of the foaming material has a stable molecular structure, has strong yellowing resistance, and has lasting and unchanged appearance color of the sole.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a foaming mold for foaming a foamed shoe sole;
fig. 2 is a schematic structural view of a foamed sole having a double film layer.
The attached drawings are as follows:
1-bottom die, 2-vent hole, 3-bottom sheet of wear-resistant layer, 4-aliphatic TPU layer, 5-film base layer, 6-foaming layer.
Detailed Description
In order to solve the problems that glue is adopted to bond the sole and a film wrapping a foaming material above the sole in the manufacturing process of a common foaming sole, the peculiar smell of the glue needs to be discharged by a matched ventilation device, the overflowed glue needs to be cleaned in time and labor, the environment is not protected, and the production cost is reduced, the glue-free foaming sole and the manufacturing method thereof are provided.
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, the embodiment provides a glue-free foamed sole, which comprises a wear-resistant layer bottom sheet 3, wherein a thin film layer is bonded on the wear-resistant layer bottom sheet 3, a foaming layer 6 is wrapped in the thin film layer, the thin film layer is an aliphatic TPU layer 4 and a thin film base layer 5 which are pressed together, the aliphatic TPU layer 4 is bonded and fixed with the wear-resistant layer bottom sheet 3, and the foaming layer 6 is wrapped in the thin film base layer 5. Because the raw material cost of the aliphatic TPU is high, the aliphatic TPU is easy to absorb and break when the heated and vacuumized layer is vacuumized, so that a common TPU layer (such as aromatic TPU) with half of the conventional thickness is covered and fixed on the aliphatic TPU layer with half of the conventional thickness, the material cost can be saved, the heated aliphatic TPU layer can be supported, the absorption and breakage during the vacuumization can be avoided, and the processing stability of the film can be ensured.
The glue-free foaming sole with the double-layer film comprises the following steps:
the method comprises the following steps: utilizing casting equipment to produce an aliphatic TPU layer, and then utilizing the casting equipment or laminating equipment to cover and fix an aromatic TPU film (namely a film base layer 5) on the surface of the aliphatic TPU layer 4 to form a film layer with a double-layer structure;
step two: putting the wear-resistant layer bottom sheet 3 into the bottom die 1, putting the thin film layer on the bottom die 1, and drying the thin film layer with the aliphatic TPU layer 4 facing downwards;
step three: butting vacuumizing equipment with a bottom die 1, vacuumizing the die by using an exhaust hole 2, so that the film layer is adsorbed on the surfaces of the wear-resistant layer negative film 3 and the die, and the film layer and the wear-resistant layer negative film 3 are adhered to each other;
step four: filling a polyurethane foaming material on the film layer, closing the mould, conveying the mould into a forming production line, keeping the temperature for 5min to foam the foaming material wrapped in the film layer, tightly wrapping the foaming material by the film layer in the foaming process, and demoulding after the sole is cured;
step five: and trimming and finishing the demoulded finished product sole, and packaging and warehousing after the finished product sole is qualified.
Among them, a casting apparatus such as a casting film extruder is a special apparatus for producing a casting film. When the aliphatic TPU film is manufactured, the aliphatic TPU particles are input into equipment to be heated and melted, then the melted raw materials are extruded into a film by an extrusion device, and then the film can be cooled and curled by a roller mechanism. Which belongs to the common production equipment in the field and is not described in detail herein. The mould can adopt a foaming forming mould adopted in CN201911159545.6, "pore-free polyurethane film-absorbing sole foaming process".
In addition, if cost and processing difficulty do not need to be considered, a single layer of aliphatic TPU film can be used for the film layer without any problem.
The foregoing is a more detailed description of the invention than is specifically described in connection with the preferred embodiments, and it is not intended to limit the invention to the particular forms disclosed, since all equivalent variations and modifications as fall within the scope of the appended claims are intended to be embraced therein.

Claims (6)

1. The glue-free foamed sole is characterized by comprising a wear-resistant layer bottom sheet, wherein a thin film layer is bonded on the wear-resistant layer bottom sheet, a foaming layer is wrapped in the thin film layer, and the thin film layer is an aliphatic TPU layer.
2. The glue-free foamed shoe sole of claim 1, wherein the film layer comprises an aliphatic TPU layer and a film base layer which are pressed together, the aliphatic TPU layer is bonded and fixed with the bottom sheet of the wear-resistant layer, and the film base layer is wrapped with a foaming layer.
3. The glue-free foamed shoe sole of claim 2, wherein the manufacturing method comprises the following steps:
the method comprises the following steps: producing an aliphatic TPU layer by using casting equipment, and then covering and fixing a film base layer on the surface of the aliphatic TPU layer by using the casting equipment or laminating equipment to form a film layer with a double-layer structure;
step two: putting the wear-resistant layer substrate into a bottom die, putting the thin film layer on the bottom die, enabling the aliphatic TPU layer to face downwards, and drying the thin film layer;
step three: vacuumizing the mould to enable the film layer to be adsorbed on the bottom sheet of the wear-resistant layer and the surface of the mould, and mutually adhering the film layer and the bottom sheet of the wear-resistant layer;
step four: filling a foaming material on the film layer, closing the mould, conveying the mould into a forming production line for heat preservation, foaming the foaming material wrapped in the film layer, tightly wrapping the foaming material by the film layer in a foaming process, and demoulding after the sole is cured;
step five: and trimming and finishing the demoulded finished product sole, and packaging and warehousing after the finished product sole is qualified.
4. The method for manufacturing the rubber-free foamed sole according to claim 3, wherein the film base layer is made of an aromatic TPU film.
5. The method for manufacturing the glue-free foamed sole according to claim 3, wherein the foaming material is a polyurethane foaming material.
6. The method for manufacturing the glue-free foamed sole according to claim 3, wherein the heat preservation time in the fourth step is 5 min.
CN202010349281.7A 2020-04-28 2020-04-28 Glue-free foamed sole and manufacturing method thereof Pending CN111513422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010349281.7A CN111513422A (en) 2020-04-28 2020-04-28 Glue-free foamed sole and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010349281.7A CN111513422A (en) 2020-04-28 2020-04-28 Glue-free foamed sole and manufacturing method thereof

Publications (1)

Publication Number Publication Date
CN111513422A true CN111513422A (en) 2020-08-11

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1191471A (en) * 1995-06-07 1998-08-26 耐克国际有限公司 Membranes of polyurethane based on materials including polyester polyols
CN1334054A (en) * 2000-07-18 2002-02-06 美津浓株式会社 Sole with three-layer structure and its manufacture method
CN101346226A (en) * 2005-12-20 2009-01-14 耐克国际有限公司 Flexible barrier membranes employing poly (hydroxy amino ethers)
CN202618482U (en) * 2012-04-06 2012-12-26 特步(中国)有限公司 Sole with thin film on surface
CN104552674A (en) * 2013-12-10 2015-04-29 吴文杰 Shoe sole molding method
CN105538584A (en) * 2016-02-01 2016-05-04 胡广平 Shoe sole forming mold and shoe sole mold sucking forming method using same
CN107000373A (en) * 2014-09-12 2017-08-01 耐克创新有限合伙公司 Film and application thereof
US10165825B2 (en) * 2016-04-01 2019-01-01 Nike, Inc. Article of footwear with adaptive fit
US20200087512A1 (en) * 2018-09-13 2020-03-19 Nike, Inc. Multi-layered structures and uses thereof
CN110900932A (en) * 2019-11-22 2020-03-24 广东鹏骏新材料科技有限公司 Pore-free polyurethane film-absorbing sole foaming process

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1191471A (en) * 1995-06-07 1998-08-26 耐克国际有限公司 Membranes of polyurethane based on materials including polyester polyols
CN1334054A (en) * 2000-07-18 2002-02-06 美津浓株式会社 Sole with three-layer structure and its manufacture method
CN101346226A (en) * 2005-12-20 2009-01-14 耐克国际有限公司 Flexible barrier membranes employing poly (hydroxy amino ethers)
CN202618482U (en) * 2012-04-06 2012-12-26 特步(中国)有限公司 Sole with thin film on surface
CN104552674A (en) * 2013-12-10 2015-04-29 吴文杰 Shoe sole molding method
CN107000373A (en) * 2014-09-12 2017-08-01 耐克创新有限合伙公司 Film and application thereof
CN105538584A (en) * 2016-02-01 2016-05-04 胡广平 Shoe sole forming mold and shoe sole mold sucking forming method using same
US10165825B2 (en) * 2016-04-01 2019-01-01 Nike, Inc. Article of footwear with adaptive fit
US20200087512A1 (en) * 2018-09-13 2020-03-19 Nike, Inc. Multi-layered structures and uses thereof
CN110900932A (en) * 2019-11-22 2020-03-24 广东鹏骏新材料科技有限公司 Pore-free polyurethane film-absorbing sole foaming process

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何先祺 等: "《皮革工业手册 皮革化工材料分册》", 31 January 2000, 中国轻工业出版社 *

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Application publication date: 20200811

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