CN111452404A - Light composite sole manufacturing process - Google Patents
Light composite sole manufacturing process Download PDFInfo
- Publication number
- CN111452404A CN111452404A CN201910048558.XA CN201910048558A CN111452404A CN 111452404 A CN111452404 A CN 111452404A CN 201910048558 A CN201910048558 A CN 201910048558A CN 111452404 A CN111452404 A CN 111452404A
- Authority
- CN
- China
- Prior art keywords
- tpu
- mold
- particles
- foaming
- autoclave
- 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
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000005187 foaming Methods 0.000 claims abstract description 44
- 239000002245 particle Substances 0.000 claims abstract description 42
- 238000002156 mixing Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003292 glue Substances 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 14
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 7
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 7
- 239000002270 dispersing agent Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 230000005484 gravity Effects 0.000 claims abstract description 5
- 238000005253 cladding Methods 0.000 claims abstract description 4
- 238000009738 saturating Methods 0.000 claims abstract description 4
- 239000004814 polyurethane Substances 0.000 claims description 24
- 239000003054 catalyst Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 238000004383 yellowing Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000004094 surface-active agent Substances 0.000 claims description 9
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 3
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical group [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 3
- 239000012963 UV stabilizer Substances 0.000 claims description 3
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 claims description 3
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 claims description 3
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 3
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 2
- 210000002683 foot Anatomy 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/122—Soles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention relates to a manufacturing process of a light composite sole, which comprises the following steps: supercritical foaming: adding a water dispersing agent and TPU particles into a high-pressure kettle, introducing carbon dioxide and nitrogen into the high-pressure kettle, stirring and heating the high-pressure kettle, and saturating the particles to obtain TPU foamed particles with the required specific gravity; mixing: mixing the TPU foaming particles with PU glue, wherein the PU glue is partially coated with the TPU foaming particles, and the surfaces of the TPU foaming particles are not mutually contacted; die assembly: laying the TPU film in a mold cavity of a shoe mold, filling foamed shoe materials in the mold cavity, stacking the foamed shoe materials on the TPU film, and then closing the mold; baking in an oven: placing the shoe mold into an oven for baking in a mold closing state; and (4) taking out the shoe mold from the oven, and opening the mold to obtain the composite sole which is formed by combining PU cladding, TPU foaming particle shape and TPU film. The invention can manufacture a new-type sole, and is more rich and lighter than the sole using a single foaming material and a buffer air bag in the prior art.
Description
Technical Field
The invention relates to a process for manufacturing a lightweight sole by using a composite material, in particular to a process for manufacturing a lightweight composite sole.
Background
The main function of the shoe is to protect the feet of the wearer from being punctured by foreign objects or accidentally bumped. When the shoes are worn for walking or sports, the shoes can preferentially buffer the impact vibration generated by the ground to the feet, and avoid the injuries to the feet, ankles, knees or hips caused by walking or strenuous sports.
Currently, in order to alleviate the discomfort caused by the above forces, there are two common implementations: the first one is made of EVA resin through foaming, which is heated and pressurized in mold to form the sole with proper force to compress and deform to obtain buffering effect. The second is to arrange a buffer air cushion in the sole structure, which can be compressed by force to temporarily deform to achieve the buffer effect no matter directly or indirectly applying pressure on the air cushion.
The two known sole cushioning structures described above have some practical drawbacks, as explained below:
the cushioning effect of the sole made of foamed resin is limited by the inherent limitations of the material, and particularly after a period of use, the ability of the sole to resist walking or landing after exercise is greatly reduced, and the sole cannot effectively provide sufficient cushioning, which affects the wearing comfort of the user. The adoption of the buffering of the air cushion can easily cause the air cushion to crack and leak air after being used for a period of time, even the problem of water inflow in the shoe easily occurs in water accumulation or rainy days, and the air cushion also loses the elastic shock absorption capability.
Disclosure of Invention
In view of the above, the present invention provides a manufacturing method of a lightweight composite sole.
In order to achieve the above object, the present invention provides a manufacturing process of a lightweight composite sole, which comprises the following steps:
supercritical foaming: sequentially adding a water dispersing agent and TPU particles into an autoclave, respectively introducing carbon dioxide and nitrogen into the autoclave so that the internal pressure of the autoclave is 9-11 MPa, stopping introducing the carbon dioxide and the nitrogen into the autoclave, stirring by a stirrer in the autoclave, heating the autoclave, controlling the internal temperature of the autoclave to be 100-150 ℃, heating the autoclave for 1-2 hours, saturating the TPU particles for 1.5-3 hours, finally stopping stirring by the stirrer, opening a valve of the autoclave for pressure relief, and preparing the high-pressure-resistant TPU particle material with the specific gravity of 0.1g/cm3To 0.12g/cm3The TPU foamed particles of (a);
mixing: mixing the TPU foaming particles and PU glue to form a thick foaming base material, wherein the PU glue is partially coated with the TPU foaming particles, and the surfaces of the TPU foaming particles are not mutually contacted;
die assembly: laying the TPU film in a mold cavity of a shoe mold, filling foamed shoe materials in the mold cavity, stacking the foamed shoe materials on the TPU film, and then closing the mold;
baking in an oven: putting the shoe mold into an oven for 8 to 13 minutes in a mold closing state; wherein the temperature of the oven is 100 ℃ to 140 ℃;
and (3) finished product: taking out the shoe mold from the oven, and opening the mold to obtain the composite sole which is formed by combining PU cladding, TPU foaming particle shape and TPU film.
In the mixing step, the foaming base material comprises water, a catalyst and a yellowing resistant agent, and after the PU adhesive, the water, the catalyst, the yellowing resistant agent and the TPU foaming particles are simultaneously input into the mixing tank, the mixing tank mixes the foaming base material for 3 to 5 seconds.
In the manufacturing process of the light composite sole, in the mixing step, the interior of the stirring barrel is heated to 30 ℃ to 40 ℃ for stirring and mixing of the foaming base material.
In the manufacturing process of the light composite sole, in the mixing step, the mixing mass ratio of the PU glue to the TPU foamed particles is 7: 3; the viscosity of the PU adhesive is 2000 to 3500 mPas (25 ℃).
In the above process for manufacturing a lightweight composite shoe sole, in the mixing step, the catalyst is a polyurethane catalyst, and the anti-yellowing agent is an ultraviolet absorber or an anti-UV stabilizer; the water content is 0.1-3% by mass, the catalyst is 0.8-3% by mass, and the anti-yellowing agent is 8% by mass.
The manufacturing process of the light composite sole comprises the following steps of preparing a water dispersing agent, a surfactant and an entrainer, wherein the mass ratio of the water to the surfactant to the entrainer is 1: 0.03: 0.015 to 1: 0.008: 0.04.
in the manufacturing process of the light-weighted composite shoe sole, the surfactant is sodium dodecyl sulfate or cetyl trimethyl ammonium bromide; and the entrainer is cyclopentane, n-butane, ethanol or acetone.
The method of the invention can manufacture a new type of sole, and is richer and lighter than the sole using a single foaming material and a buffer air bag in the prior art.
Detailed Description
In order to make the aforementioned objects, features and characteristics of the present invention comprehensible, embodiments accompanied with the present invention are described in detail below.
The invention provides a manufacturing process of a light composite sole, which comprises the following steps:
supercritical foaming: sequentially adding a water dispersing agent and TPU particles into an autoclave, respectively introducing carbon dioxide and nitrogen into the autoclave so that the internal pressure of the autoclave is 9-11 MPa, stopping introducing the carbon dioxide and the nitrogen into the autoclave, stirring by a stirrer in the autoclave, heating the autoclave, controlling the internal temperature of the autoclave to be 100-150 ℃, heating the autoclave for 1-2 hours, saturating the TPU particles for 1.5-3 hours, stopping stirring by the stirrer, opening a valve of the autoclave for pressure relief, and preparing the high-pressure-resistant TPU particle material with the specific gravity of 0.1g/cm3To 0.12g/cm3The TPU foamed particles of (a);
mixing: mixing the TPU foaming particles and PU glue to form a thick foaming base material, wherein the PU glue is partially coated with the TPU foaming particles, and the surfaces of the TPU foaming particles are not mutually contacted;
die assembly: laying the TPU film in a mold cavity of a shoe mold, filling foamed shoe materials in the mold cavity, stacking the foamed shoe materials on the TPU film, and then closing the mold;
baking in an oven: putting the shoe mold into an oven for 8 to 13 minutes in a mold closing state; wherein the temperature of the oven is 100 ℃ to 140 ℃;
and (3) finished product: taking out the shoe mold from the oven, and opening the mold to obtain the composite sole which is formed by combining PU cladding, TPU foaming particle shape and TPU film.
Through the steps, the TPU particles improved through supercritical foaming are prepared, the TPU foaming particles in the required specific gravity range are prepared, the TPU foaming particles and the PU glue are mixed, the polyurethane foam particles and the PU glue are subjected to die assembly, baking and other steps to prepare the light composite sole with two elasticity and buffer capacity of the foaming PU and the TPU foaming particles, meanwhile, the scratch resistance and wear resistance of the sole are improved through the TPU film, the structural strength of the shoe material is reinforced, and the phenomenon of breakage is avoided, so that the light composite sole is prepared.
The detailed characteristics of the steps of the invention are further illustrated in the following, wherein the mixing mass ratio of PU glue and TPU foaming particles in the mixing step is 7: 3; the viscosity of the PU adhesive is 2000 to 3500 mPas (25 ℃). And the foaming base material in the mixing step comprises water, a catalyst and a yellowing resistant agent, and after the PU glue, the water, the catalyst, the yellowing resistant agent and the TPU foaming particles are simultaneously input into a stirring barrel, the stirring barrel stirs and mixes the foaming base material for 3-5 seconds. The inside of the stirring tank is heated to 30 to 40 ℃ to stir and mix the foaming base material.
The catalyst is a polyurethane catalyst; wherein the anti-yellowing agent is an ultraviolet absorbent or an anti-UV stabilizer; the mass percent of the water is 0.1-3%, the mass percent of the catalyst is 0.8-3%, and the mass percent of the yellowing resistant agent is 8%.
In the supercritical foaming step, the water dispersing agent comprises water, a surfactant and an entrainer, wherein the mass ratio of the water to the surfactant to the entrainer is 1: 0.03: 0.015 to 1: 0.008: 0.04. the surfactant is sodium dodecyl sulfate or hexadecyl trimethyl ammonium bromide; and the entrainer is cyclopentane, n-butane, ethanol or acetone.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention; therefore, all the equivalent changes and modifications made according to the protection scope of the present patent application should fall within the protection scope covered by the present patent application.
Claims (7)
1. A manufacturing process of a light composite sole is characterized by comprising the following steps:
supercritical foaming: sequentially adding a water dispersing agent and TPU particles into an autoclave, respectively introducing carbon dioxide and nitrogen into the autoclave so that the internal pressure of the autoclave is 9-11 MPa, stopping introducing the carbon dioxide and the nitrogen into the autoclave, stirring by a stirrer in the autoclave, heating the autoclave, controlling the internal temperature of the autoclave to be 100-150 ℃, heating the autoclave for 1-2 hours, saturating the TPU particles for 1.5-3 hours, finally stopping stirring by the stirrer, opening a valve of the autoclave for pressure relief, and preparing the high-pressure-resistant TPU particle material with the specific gravity of 0.1g/cm3To 0.12g/cm3The TPU foamed particles of (a);
mixing: mixing the TPU foaming particles and PU glue to form a thick foaming base material, wherein the PU glue is partially coated with the TPU foaming particles, and the surfaces of the TPU foaming particles are not mutually contacted;
die assembly: laying the TPU film in a mold cavity of a shoe mold, filling foamed shoe materials in the mold cavity, stacking the foamed shoe materials on the TPU film, and then closing the mold;
baking in an oven: putting the shoe mold into an oven for 8 to 13 minutes in a mold closing state; wherein the temperature of the oven is 100 ℃ to 140 ℃;
and (3) finished product: taking out the shoe mold from the oven, and opening the mold to obtain the composite sole which is formed by combining PU cladding, TPU foaming particle shape and TPU film.
2. The process for manufacturing a lightweight composite sole according to claim 1, wherein in the mixing step, the foaming base material comprises water, a catalyst and a yellowing resistant agent, and after the PU glue, the water, the catalyst, the yellowing resistant agent and the TPU foamed particles are respectively and simultaneously input into the mixing tank, the mixing tank mixes the foaming base material for 3-5 seconds.
3. The process for manufacturing a lightweight composite shoe sole according to claim 2, wherein in the mixing step, the interior of the mixing tank is heated to 30 ℃ to 40 ℃ for mixing the foaming base material.
4. The process for manufacturing a light-weighted composite shoe sole according to claim 3, wherein in the mixing step, the mixing mass ratio of the PU adhesive to the TPU foamed particles is 7: 3; the viscosity of the PU adhesive is 2000 to 3500 mPas (25 ℃).
5. The process for manufacturing a light-weighted composite shoe sole according to claim 4, wherein in the mixing step, the catalyst is a polyurethane catalyst, and the anti-yellowing agent is an ultraviolet absorber or an anti-UV stabilizer; the water content is 0.1-3% by mass, the catalyst is 0.8-3% by mass, and the anti-yellowing agent is 8% by mass.
6. The process for manufacturing a light-weighted composite shoe sole according to any one of claims 1 to 5, wherein the water dispersant comprises water, a surfactant and an entrainer, and the mass ratio of the water to the surfactant and the entrainer is 1: 0.03: 0.015 to 1: 0.008: 0.04.
7. the process for manufacturing a light-weighted composite shoe sole according to claim 6, wherein the surfactant is sodium dodecyl sulfate or cetyltrimethyl ammonium bromide; and the entrainer is cyclopentane, n-butane, ethanol or acetone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048558.XA CN111452404A (en) | 2019-01-18 | 2019-01-18 | Light composite sole manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910048558.XA CN111452404A (en) | 2019-01-18 | 2019-01-18 | Light composite sole manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111452404A true CN111452404A (en) | 2020-07-28 |
Family
ID=71673382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910048558.XA Pending CN111452404A (en) | 2019-01-18 | 2019-01-18 | Light composite sole manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111452404A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104130439A (en) * | 2014-08-11 | 2014-11-05 | 邓婷 | Thermoplastic polyurethane elastomer foamed beads and preparation method thereof |
| CN205143627U (en) * | 2015-11-05 | 2016-04-13 | 晋江国盛鞋材有限公司 | Slippers insole, big end of slippers and slippers |
| CN105639837A (en) * | 2016-03-29 | 2016-06-08 | 丁荣誉 | Laminating popcorn polyurethane shoe material and production technology |
| US20180035755A1 (en) * | 2012-04-13 | 2018-02-08 | Adidas Ag | Soles for sports shoes |
| US20180103719A1 (en) * | 2016-10-13 | 2018-04-19 | Maoshuang Chen | Environment-friendly, cushioning and well-wrapping popcorn bridging shoes and production process thereof |
-
2019
- 2019-01-18 CN CN201910048558.XA patent/CN111452404A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180035755A1 (en) * | 2012-04-13 | 2018-02-08 | Adidas Ag | Soles for sports shoes |
| CN104130439A (en) * | 2014-08-11 | 2014-11-05 | 邓婷 | Thermoplastic polyurethane elastomer foamed beads and preparation method thereof |
| CN205143627U (en) * | 2015-11-05 | 2016-04-13 | 晋江国盛鞋材有限公司 | Slippers insole, big end of slippers and slippers |
| CN105639837A (en) * | 2016-03-29 | 2016-06-08 | 丁荣誉 | Laminating popcorn polyurethane shoe material and production technology |
| US20180103719A1 (en) * | 2016-10-13 | 2018-04-19 | Maoshuang Chen | Environment-friendly, cushioning and well-wrapping popcorn bridging shoes and production process thereof |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20200728 |