CN113246364B - Breathable warm-keeping type fly-knitted vamp - Google Patents
Breathable warm-keeping type fly-knitted vamp Download PDFInfo
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- CN113246364B CN113246364B CN202110519556.1A CN202110519556A CN113246364B CN 113246364 B CN113246364 B CN 113246364B CN 202110519556 A CN202110519556 A CN 202110519556A CN 113246364 B CN113246364 B CN 113246364B
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- tpu
- surface layer
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- composite wire
- vamp
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Classifications
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- 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
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0205—Uppers; Boot legs characterised by the material
- A43B23/0225—Composite materials, e.g. material with a matrix
-
- 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
- B29C44/34—Auxiliary operations
- B29C44/3403—Foaming under special conditions, e.g. in sub-atmospheric pressure, in or on a liquid
-
- 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
- B29C44/34—Auxiliary operations
- B29C44/3415—Heating or cooling
- B29C44/3426—Heating by introducing steam in the mould
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/06—CO2, N2 or noble gases
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/08—Supercritical fluid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
Abstract
The invention discloses a breathable warm-keeping type flying-woven vamp, which is woven by TPU composite wires, wherein the TPU composite wires comprise wires positioned in a core part and a TPU surface layer formed by supercritical foaming and coated on the periphery of the wires of the core part, and the TPU surface layer comprises the following components: 90-93% of thermoplastic polyurethane, 0.5-0.7% of antioxidant and uvioresistant agent, 0.2-0.4% of fire retardant, 2-3% of antibacterial agent, 1.5-2.1% of filling agent and 2-4% of lubricating agent.
Description
Technical Field
The invention relates to the technical field of vamps, in particular to a breathable warm-keeping type flying knitted vamp.
Background
The shoes are necessities for life, the variety is numerous, in the general leisure field, the knitted vamp has light and breathable properties and good heat preservation performance, the forming degree is high, the foot feeling is comfortable and popular with people, the breathable degree of the vamp is usually increased by means of gaps and holes reserved during weaving, but the gaps or holes are large in size, the breathable property is good, and meanwhile, the heat preservation performance is easy to cause to be insufficient, and improvement is needed.
Disclosure of Invention
In order to solve at least one technical defect, the invention provides the following technical scheme:
the application file discloses a fly to knit vamp with good ventilative warm-keeping type to the vamp is woven to TPU composite wire, and TPU composite wire is including the wire rod that is located the core and the TPU top layer of cladding at the supercritical foaming shaping of core wire rod periphery, and the component on TPU top layer includes: 90-93% of thermoplastic polyurethane, 0.5-0.7% of antioxidant and uvioresistant agent, 0.2-0.4% of flame retardant, 2-3% of antibacterial agent, 1.5-2.1% of filler and 2-4% of lubricant.
This vamp adopts the compound wire rod of TPU to weave the shaping, and the TPU top layer of the compound wire rod of TPU is the supercritical foaming shaping, there are a plurality of microbubbles in the wire rod top layer, weave fashioned vamp with this wire rod, at the walking in-process, the vamp receives the extrusion, one in the bubble rises one and contracts the ventilative dynamics that increases shoes, and the TPU top layer includes the antiseptic, the existence of microbubble has increased the external area of contact of antiseptic, one rises one and contracts the process and is favorable to disinfecting to the interior gas of shoes, above-mentioned vamp gas permeability is good, the warmth retention preferred.
Preferably, the components of the TPU skin layer include: 91% of thermoplastic polyurethane, 0.7% of antioxidant and uvioresistant agent, 0.4% of flame retardant, 3% of antibacterial agent, 2.1% of filler and 2.8% of lubricant.
The components of the TPU surface layer comprise: 93 percent of thermoplastic polyurethane, 0.5 percent of antioxidant and uvioresistant agent, 0.2 percent of flame retardant, 2 percent of antibacterial agent, 1.5 percent of filler and 2.8 percent of lubricant.
The components of the TPU surface layer comprise: 90% of thermoplastic polyurethane, 0.7% of antioxidant and uvioresistant agent, 0.2% of flame retardant, 3% of antibacterial agent, 2.1% of filler and 4% of lubricant.
Further, the supercritical foaming molding process flow is as follows: the preformed body formed by coating the TPU material on the periphery of the core wire is placed in a high-pressure reaction kettle, carbon dioxide is used as a fluid medium, the fluid medium is pressurized and heated to be in a supercritical state so as to be dissolved into a TPU surface layer of the preformed body, and then the pressure is quickly released and the temperature is raised to foam the TPU surface layer to form the TPU composite wire.
The scheme discloses a specific flow of a supercritical foaming process, which comprises the steps of coating a TPU material on the periphery of a core wire to form a preformed body, and then carrying out the working procedures of dissolving a supercritical medium, releasing pressure, raising temperature, foaming and the like.
Furthermore, the temperature in the reaction kettle is 60-75 ℃, the pressure is 35-40MPa, and the time is 3-5h, and the temperature, the pressure, the time and the like of a supercritical medium are preferably selected in the scheme, so that the subsequent foaming molding of the TPU surface layer is facilitated.
And further, releasing the pressure of the reaction kettle, taking out the TPU composite wire, placing the TPU composite wire into a foaming box, introducing steam, heating and foaming for 30min-1h, wherein in the step, more air bubbles are in the TPU surface layer, which is beneficial to improving the air permeability of the shoe.
Furthermore, the antibacterial agent is in a metal particle type, so that the antibacterial performance and the physical performance of the wire rod are improved, and the molding is facilitated.
Further, the antibacterial agent is silver nanoparticles.
Furthermore, the filler comprises one or more of talcum powder, carbon black and titanium dioxide, and the performance such as strength is improved.
Furthermore, the same content of antioxidant and uvioresistant agent is beneficial to maintaining the shape, the color and the like of the shoes.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention improves the structure of the wire rod, the supercritical foaming TPU surface layer is formed on the surface of the wire rod, a plurality of micro bubbles are contained in the wire rod, and the wire rod is used for weaving the formed vamp, so that the air permeability is good, and the heat retention is good.
Detailed Description
The present invention will be further described with reference to the following specific examples.
In the following examples:
antioxidant: cyanox 1790;
anti-ultraviolet agent: benzoic acid-based anti-uv agents;
flame retardant: mixing antimony trioxide, sodium dodecyl sulfate and the like;
antibacterial agents: nano silver particles;
filling agent: talc powder;
lubricant: a polysiloxane;
thermoplastic polyurethane: polyester type thermoplastic polyurethane particles are prepared by taking polyester polyol, 4' -diphenylmethane diisocyanate (MDI) and 1, 4-butanediol as raw materials.
In practice, the molding of the preform is referred to patent document No. CN 104452306B.
The thickness of the TPU surface layer is about 1.5mm, and the silk thread is about 0.3 mm.
Example 1
The preparation method comprises the following steps:
firstly, the components of a TPU surface layer: 90% of thermoplastic polyurethane, 0.7% of antioxidant and uvioresistant agent, 0.2% of flame retardant, 3% of antibacterial agent, 2.1% of filler and 4% of lubricant.
Adding the components of the TPU surface layer into a hopper, drying and dehumidifying for 1h, starting an extruder, preheating a machine head to 190 ℃, opening and drawing to enable the pretreated silk thread to pass through the mouth shape of the machine head, enabling the TPU component materials to enter the extruder head in a molten viscous state, and coating the TPU component materials on the periphery of the silk thread to form a preformed body, wherein the thickness of the TPU surface layer is about 0.2mm at the moment.
Secondly, placing the preformed body in a high-pressure reaction kettle, introducing carbon dioxide as a fluid medium, pressurizing and heating to enable the fluid medium to be in a supercritical state so as to be dissolved in the TPU surface layer of the preformed body, introducing water vapor, maintaining the pressure at 0.2MPa, heating to enable the TPU surface layer to be foamed, and conducting 30min to form a TPU composite wire, wherein the thickness of the TPU surface layer is about 1.5 mm.
Thirdly, weaving the TPU composite wires to form the vamp, and carrying out steam shaping.
Example 2
The preparation method comprises the following steps:
firstly, the components of a TPU surface layer: 93 percent of thermoplastic polyurethane, 0.5 percent of antioxidant and uvioresistant agent, 0.2 percent of flame retardant, 2 percent of antibacterial agent, 1.5 percent of filler and 2.8 percent of lubricant.
Adding the components of the TPU surface layer into a hopper, drying and dehumidifying for 1h, starting an extruder, preheating a machine head to 190 ℃, opening and drawing to enable the pretreated silk thread to pass through the mouth shape of the machine head, enabling the TPU component materials to enter the extruder head in a molten viscous state, and coating the TPU component materials on the periphery of the silk thread to form a preformed body, wherein the thickness of the TPU surface layer is about 0.2mm at the moment.
Secondly, placing the preformed body in a high-pressure reaction kettle, introducing carbon dioxide as a fluid medium, pressurizing and heating to enable the fluid medium to be in a supercritical state so as to be dissolved in the TPU surface layer of the preformed body, introducing water vapor, maintaining the pressure at 0.2MPa, heating to enable the TPU surface layer to be foamed, and conducting 40min to form the TPU composite wire, wherein the thickness of the TPU surface layer is about 1.5 mm.
Thirdly, weaving the TPU composite wires to form the vamp, and carrying out steam shaping.
Example 3
The preparation method comprises the following steps:
firstly, the components of a TPU surface layer: 91% of thermoplastic polyurethane, 0.7% of antioxidant and uvioresistant agent, 0.4% of flame retardant, 3% of antibacterial agent, 2.1% of filler and 2.8% of lubricant.
Adding the components of the TPU surface layer into a hopper, drying and dehumidifying for 1h, starting an extruder, preheating a machine head to 190 ℃, opening and drawing to enable the pretreated silk thread to pass through the mouth shape of the machine head, enabling the TPU component materials to enter the extruder head in a molten viscous state, and coating the TPU component materials on the periphery of the silk thread to form a preformed body, wherein the thickness of the TPU surface layer is about 0.2mm at the moment.
Secondly, placing the preformed body in a high-pressure reaction kettle, introducing carbon dioxide as a fluid medium, pressurizing and heating to enable the fluid medium to be in a supercritical state so as to be dissolved in the TPU surface layer of the preformed body, introducing water vapor, maintaining the pressure at 0.2MPa, heating to enable the TPU surface layer to be foamed, and forming the TPU composite wire for 1 hour, wherein the thickness of the TPU surface layer is about 1.5 mm.
Thirdly, weaving the TPU composite wires to form the vamp, and carrying out steam shaping.
Comparative example 1
The second step was eliminated compared to example 3.
Detection
The shoe uppers prepared above were tested for air permeability according to GB/T5453 (determination of textile fabric air permeability) on the shoe uppers prepared in examples 1-3, comparative example 1, as shown in the following table:
the above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (5)
1. Have good ventilative warm type and fly to knit vamp, its characterized in that weaves the vamp with TPU composite wire, and TPU composite wire includes the wire rod that is located the core and the cladding at the TPU top layer of the supercritical foaming shaping of core wire rod periphery, and the component on TPU top layer includes: 90-93% of thermoplastic polyurethane, 0.5-0.7% of antioxidant and uvioresistant agent, 0.2-0.4% of flame retardant, 2-3% of antibacterial agent, 1.5-2.1% of filler and 2-4% of lubricant;
the supercritical foaming forming process flow comprises the following steps: placing a preformed body formed by coating a TPU material on the periphery of a core wire in a high-pressure reaction kettle, pressurizing and heating by taking carbon dioxide as a fluid medium to enable the fluid medium to be in a supercritical state so as to be dissolved into a TPU surface layer of the preformed body, and then quickly releasing pressure and heating to enable the TPU surface layer to be foamed to form a TPU composite wire;
the temperature in the reaction kettle is 60-75 ℃, the pressure is 35-40MPa, and the time is 3-5 h;
and (3) decompressing the reaction kettle, taking out the TPU composite wire, placing the TPU composite wire in a foaming box, introducing steam, heating and foaming for 30min-1 h.
2. The flying-woven shoe upper with good ventilation and warm keeping properties of claim 1, wherein: the antimicrobial agent is of the metal particle type.
3. The flying-woven shoe upper with good ventilation and warm keeping functions of claim 2, wherein: the antibacterial agent is nano silver particles.
4. The flying-woven shoe upper with good ventilation and warm keeping functions of claim 1, wherein: the filler comprises one or more of talcum powder, carbon black and titanium dioxide.
5. The flying-woven shoe upper with good ventilation and warm keeping properties of claim 1, wherein: the contents of antioxidant and uvioresistant agent are the same.
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CN202110519556.1A CN113246364B (en) | 2021-05-13 | 2021-05-13 | Breathable warm-keeping type fly-knitted vamp |
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CN202110519556.1A CN113246364B (en) | 2021-05-13 | 2021-05-13 | Breathable warm-keeping type fly-knitted vamp |
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CN113246364B true CN113246364B (en) | 2022-09-13 |
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CN113968034A (en) * | 2021-11-03 | 2022-01-25 | 特步(中国)有限公司 | Method for manufacturing foaming knitted element and method for manufacturing foaming shoe upper |
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CN210143951U (en) * | 2019-04-14 | 2020-03-17 | 泉州市万胜新材料科技有限公司 | Reflective silver antibacterial warm-keeping breathable vamp |
WO2020147093A1 (en) * | 2019-01-18 | 2020-07-23 | 加久企业股份有限公司 | Preparation process for lightweight composite sole |
CN212046308U (en) * | 2020-03-12 | 2020-12-01 | 东莞市百思兰鞋材科技有限公司 | Waterproof ventilative vamp with developments water-proof effects |
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WO2016077221A1 (en) * | 2014-11-10 | 2016-05-19 | The North Face Apparel Corp. | Footwear and other articles formed by jet extrusion processes |
CN104452306B (en) * | 2014-12-10 | 2017-01-11 | 东莞市雄林新材料科技股份有限公司 | TPU composite material and preparation method thereof |
TWI617432B (en) * | 2017-04-11 | 2018-03-11 | Li Cheng Enterprise Co Ltd | Method for preparing foamed fabric |
CN109401277A (en) * | 2018-09-21 | 2019-03-01 | 宁波格林美孚新材料科技有限公司 | A kind of E-TPU composite material and preparation method with antibacterial functions |
CN109485900A (en) * | 2018-10-26 | 2019-03-19 | 福建省安职教育服务有限公司 | A kind of preparation method of antibacterial and deodouring polyurethane body |
CN211994519U (en) * | 2019-12-23 | 2020-11-24 | 浙江尚正纺织科技有限公司 | Three-proofing composite fabric |
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2021
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101215394A (en) * | 2008-01-15 | 2008-07-09 | 泉州公元纺织有限公司 | Degradable environment-friendly type polypropylene(PP) foam plastic and preparation method thereof |
WO2020147093A1 (en) * | 2019-01-18 | 2020-07-23 | 加久企业股份有限公司 | Preparation process for lightweight composite sole |
CN210143951U (en) * | 2019-04-14 | 2020-03-17 | 泉州市万胜新材料科技有限公司 | Reflective silver antibacterial warm-keeping breathable vamp |
CN212046308U (en) * | 2020-03-12 | 2020-12-01 | 东莞市百思兰鞋材科技有限公司 | Waterproof ventilative vamp with developments water-proof effects |
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