CN114098229A - Preparation process of corrosion-resistant safety shoes - Google Patents
Preparation process of corrosion-resistant safety shoes Download PDFInfo
- Publication number
- CN114098229A CN114098229A CN202111430911.4A CN202111430911A CN114098229A CN 114098229 A CN114098229 A CN 114098229A CN 202111430911 A CN202111430911 A CN 202111430911A CN 114098229 A CN114098229 A CN 114098229A
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- Prior art keywords
- corrosion
- shoe
- sole
- resistant
- finished
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- Pending
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 47
- 230000007797 corrosion Effects 0.000 title claims abstract description 47
- 238000002360 preparation method Methods 0.000 title claims description 6
- 239000000463 material Substances 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 239000000853 adhesive Substances 0.000 claims abstract description 14
- 230000001070 adhesive effect Effects 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000009958 sewing Methods 0.000 claims abstract description 14
- 238000007493 shaping process Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 238000004806 packaging method and process Methods 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims abstract description 6
- 238000005187 foaming Methods 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 10
- 229920002943 EPDM rubber Polymers 0.000 claims description 7
- 229920000459 Nitrile rubber Polymers 0.000 claims description 7
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 7
- 239000004800 polyvinyl chloride Substances 0.000 claims description 7
- 239000011241 protective layer Substances 0.000 claims description 7
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 229920003051 synthetic elastomer Polymers 0.000 claims description 4
- 239000005061 synthetic rubber Substances 0.000 claims description 4
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 claims description 4
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims 1
- 238000004080 punching Methods 0.000 abstract description 6
- 238000007689 inspection Methods 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 9
- 238000000465 moulding Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000011265 semifinished product Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000379 polymerizing effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D8/00—Machines for cutting, ornamenting, marking or otherwise working up shoe part blanks
- A43D8/02—Cutting-out
- A43D8/04—Stamping-out
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D100/00—Setting or removing eyelets, buttons, lacing-hooks, or elastic gussets in shoes
- A43D100/08—Setting buttons on footwear
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D11/00—Machines for preliminary treatment or assembling of upper-parts, counters, or insoles on their lasts preparatory to the pulling-over or lasting operations; Applying or removing protective coverings
- A43D11/12—Machines for forming the toe part or heel part of shoes, with or without use of heat
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
- A43D25/06—Devices for gluing soles on shoe bottoms
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
- A43D25/20—Arrangements for activating or for accelerating setting of adhesives, e.g. by using heat
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D51/00—Machines for lip-setting
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D86/00—Machines for assembling soles or heels onto uppers, not provided for in groups A43D25/00 - A43D83/00, e.g. by welding
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
One or more embodiments of the present disclosure provide a process for manufacturing a corrosion-resistant safety shoe, which includes processing a fabric into a sheet material corresponding to a shape of a punching mold by a punching machine, sewing by a worker, stacking to form a large sheet material, punching a shoe buckle at a position corresponding to the large sheet material by a small punch, adding a bottom sheet, placing a steel plate for protecting a head, placing the steel plate into a foot mold, placing the foot mold into a heating furnace for heating and shaping, removing the mold by a worker after heating and shaping, placing a semi-finished shoe into a finished mold, attaching a sole to the shoe, wherein the sole sequentially includes an outsole, a midsole and an insole from bottom to top, a corrosion-resistant mesh is sandwiched between the outsole and the midsole, and sequentially bonded by a corrosion-resistant adhesive, and then heat-bonding the sole to the shoe, and finally completing packaging and inspection of a finished product, the high corrosion resistance is achieved while the technological manufacturing of the main materials of each layer of the sole and the comfort of the sole are not influenced.
Description
Technical Field
One or more embodiments of the specification relate to the technical field of labor protection shoe preparation, in particular to a corrosion-resistant labor protection shoe preparation process.
Background
The labor protection shoes are shoes with safety protection function on feet, and have various types, such as toe protection, puncture prevention, insulation, acid and alkali resistance and the like, particularly in the chemical industry or other operation places where acid, alkali and other corrosive liquids, such as acid and alkali splash, exist in the working environment, and have certain danger when working for a long time, so that certain requirements are met on equipment of workers working in the environments.
Disclosure of Invention
In view of the above, it is an object of one or more embodiments of the present disclosure to provide a process for manufacturing corrosion-resistant safety shoes, which addresses all or one of the problems of the background art.
In view of the above, one or more embodiments of the present disclosure provide a process for manufacturing a corrosion-resistant safety shoe, including:
blanking, namely processing the cloth into sheet stock in a shape corresponding to that of the blanking die by a blanking machine;
sewing combination, namely manually sewing the punched sheet materials, superposing the punched sheet materials to form a large sheet material;
buckling, namely, buckling the corresponding position of the large sheet material by a small punch to finish the semi-finished shoe;
processing the sewed sole, namely adding a bottom sheet to the finished semi-finished shoe and putting the semi-finished shoe into a steel plate for protecting the head;
shaping, namely manually sleeving the semi-finished shoe into a foot-shaped mold, and putting the semi-finished shoe into a heating furnace for heating and shaping;
demolding, and manually demolding the mold after the heating and shaping are completed;
adding a sole, placing a semi-finished product shoe into a finished product die, adhering the sole, wherein the sole sequentially comprises an outsole, a midsole and an insole from bottom to top, corrosion-resistant hanging nets are sandwiched between the outsole and the midsole and between the midsole and the insole, are sequentially bonded through a corrosion-resistant adhesive, and are welded and shaped on the shoe through heating;
and (6) packaging and inspecting a finished product.
Preferably, the corrosion resistant adhesive is a neoprene adhesive.
Preferably, the outsole is made of synthetic rubber.
Preferably, the midsole is mainly formed by foaming EVA materials, and EVA resin, tetrafluoroethylene, nitrile rubber, polyvinyl chloride and ethylene propylene diene monomer rubber are injected into a foaming mould and then are subjected to high-temperature heating and then are molded at one time.
Preferably, the insole is made by EVA one-time foaming molding.
Preferably, the corrosion-resistant netting is made of a carbon fiber material.
Preferably, in the sole sewing process, a protective layer is adhered to the semi-finished vamp layer and is formed by polymerizing polyurethane rubber, nitrile rubber, polyvinyl chloride and ethylene propylene diene monomer.
Preferably, the protective layer is designed to have a honeycomb structure at a position directly above the steel plate.
As can be seen from the above, in one or more embodiments of the present disclosure, a process for manufacturing a corrosion-resistant safety shoe includes processing a fabric into a sheet material corresponding to a shape of a punching mold by a punching machine, sewing the sheet material by a worker, stacking the sheet material to form a large sheet material, punching a shoe buckle on a corresponding position of the large sheet material by a small punch, adding a bottom sheet, placing a steel plate for protecting a head, inserting the steel plate into a foot mold, placing the foot mold into a heating furnace for heating and molding, manually removing the mold after the heating and molding, placing a semi-finished shoe into a finished product mold, adhering a shoe sole to the shoe sole, wherein the shoe sole sequentially includes an outsole, a midsole and an insole from bottom to top, a corrosion-resistant mesh is sandwiched between the outsole and the midsole, and the midsole and the insole are sequentially adhered by a corrosion-resistant adhesive, and the shoe sole is welded and molded on the shoe by heating, and finally completing packaging and inspection of a finished product, the process flow is reasonable and orderly, the head protection steel plate is embedded to play a role in protecting key parts, the key parts which need to be protected most, namely the sole position, are bonded by using the corrosion-resistant adhesive, and the corrosion-resistant hanging net is embedded and laminated at the bonding joint parts of all the layers, so that the process manufacturing of the main materials of all the layers of the sole and the comfort of the sole are not influenced, and the good corrosion resistance is achieved.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort from these drawings.
FIG. 1 is a flow chart of an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.
It is to be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
A preparation process of corrosion-resistant safety shoes comprises the following steps:
blanking, namely processing the cloth into sheet stock in a shape corresponding to that of the blanking die by a blanking machine;
sewing combination, namely manually sewing the punched sheet materials, superposing the punched sheet materials to form a large sheet material;
buckling, namely, buckling the corresponding position of the large sheet material by a small punch to finish the semi-finished shoe;
processing the sewed sole, namely adding a bottom sheet to the finished semi-finished shoe and putting the semi-finished shoe into a steel plate for protecting the head;
shaping, namely manually sleeving the semi-finished shoe into a foot-shaped mold, and putting the semi-finished shoe into a heating furnace for heating and shaping;
demolding, and manually demolding the mold after the heating and shaping are completed;
adding a sole, placing a semi-finished product shoe into a finished product die, adhering the sole, wherein the sole sequentially comprises an outsole, a midsole and an insole from bottom to top, corrosion-resistant hanging nets are sandwiched between the outsole and the midsole and between the midsole and the insole, are sequentially bonded through a corrosion-resistant adhesive, and are welded and shaped on the shoe through heating;
and (6) packaging and inspecting a finished product.
The invention passes the above process steps, including blanking process, sewing combination, striking, sewing, shaping, demoulding, adding sole, finished product packaging inspection, processing cloth into sheet material corresponding to the shape of the blanking die by a blanking machine, sewing by manpower, overlapping, combining into large sheet material, striking shoe buckle on the corresponding position of the large sheet material by a small punch, adding a bottom sheet, putting in a steel plate for head protection, then sleeving in a foot-shaped die, putting in a heating furnace for heating and shaping, after finishing heating and shaping, manually removing the die, then putting the semi-finished product shoe into the finished product die, adhering the shoe sole, the shoe sole sequentially comprises an outsole, a midsole and an insole from bottom to top, a corrosion-resistant hanging net is sandwiched between the outsole and the midsole, and between the midsole and the insole, and sequentially adhering by a corrosion-resistant adhesive, and then heating to shape the shoe sole on the shoe by heat, and finally, finished product packaging and inspection are completed, the process flow is reasonable and orderly, the protective steel plate is embedded into the head part to play a role in protecting key parts, namely the sole position, which needs to be protected most, bonding of each layer is carried out by using a corrosion-resistant adhesive, and the corrosion-resistant hanging net is embedded into the bonding joint part of each layer, clamped and overlapped to use, so that good corrosion resistance is achieved while the process manufacturing and the sole comfort of the main materials of each layer of the sole are not influenced.
In the embodiment of the invention, the corrosion-resistant adhesive is a chloroprene rubber adhesive, has high bonding strength and corrosion resistance, and is suitable for bonding various rubber materials.
In the embodiment of the invention, the outsole is made of synthetic rubber, most of the synthetic rubber has the characteristics of wear resistance, toughness and skid resistance, and is particularly suitable for safety shoes with severe working conditions.
In the embodiment of the invention, the midsole is mainly formed by foaming EVA materials, the EVA resin foaming materials are common materials applied to shoe materials, have the properties of softness, good elasticity, chemical corrosion resistance and the like, and are applied to the sole midsole of the invention, and particularly, the EVA resin, the tetrafluoroethylene, the nitrile rubber, the polyvinyl chloride and the ethylene propylene diene monomer rubber are injected into a foaming mould and then are heated at high temperature for one-step forming, wherein the added tetrafluoroethylene, the nitrile rubber, the polyvinyl chloride and the ethylene propylene diene monomer rubber firstly meet the requirement of process compatibility, and the corrosion resistance of the materials is further improved to a great extent.
In the embodiment of the invention, the insole is made of EVA through one-step foaming molding, has the performances of softness, good elasticity, chemical corrosion resistance and the like, and is applied to the insole of the sole.
In the embodiment of the invention, the corrosion-resistant hanging net is made of the carbon fiber material, the composite material formed by the carbon fiber material and the resin has the flexibility processability and the high corrosion resistance, is processed into the hanging net structure, and is clamped and embedded into the bonding joint parts of all layers of the sole, so that the wearing comfort is not influenced while the high corrosion resistance is achieved, and the corrosion-resistant hanging net is not limited by the manufacturing process of the main material.
In the embodiment of the invention, in the sole sewing process, a protective layer is adhered to the semi-finished shoe upper layer and is formed by polymerizing polyurethane rubber, nitrile rubber, polyvinyl chloride and ethylene propylene diene monomer rubber, so that the effect of overall protection of the upper layer is achieved.
In the embodiment of the invention, the protective layer is designed to be in a honeycomb structure at the position right above the steel plate, so that the effect of further enhancing the buffer protection is achieved at the key protection part.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.
It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (8)
1. The preparation process of the corrosion-resistant labor protection shoes is characterized by comprising the following steps of:
blanking, namely processing the cloth into sheet stock in a shape corresponding to that of the blanking die by a blanking machine;
sewing combination, namely sewing the punched sheet materials manually, overlapping and combining into a large sheet material;
buckling, namely, buckling the corresponding position of the large sheet material by a small punch to finish the semi-finished shoe;
processing the sewed sole, namely adding a bottom sheet to the finished semi-finished shoe and putting the semi-finished shoe into a steel plate for protecting the head;
shaping, namely manually sleeving the semi-finished shoe into a foot-shaped mold, and putting the semi-finished shoe into a heating furnace for heating and shaping;
demolding, and manually demolding the mold after the heating and shaping are completed;
adding a sole, placing the semi-finished shoe into a finished product mold, adhering the sole, wherein the sole sequentially comprises an outsole, a midsole and an insole from bottom to top, corrosion-resistant hanging nets are sandwiched between the outsole and the midsole and between the midsole and the insole, are sequentially bonded through a corrosion-resistant adhesive, and are welded and shaped on the shoe through heating;
and (6) packaging and inspecting a finished product.
2. The process for preparing a corrosion-resistant safety shoe according to claim 1, wherein the corrosion-resistant adhesive is a neoprene adhesive.
3. The process for preparing a corrosion-resistant safety shoe according to claim 1, wherein the outsole is made of synthetic rubber.
4. The process for preparing a corrosion-resistant safety shoe according to claim 1, wherein the midsole is mainly formed by foaming an EVA material, and the EVA resin, tetrafluoroethylene, nitrile rubber, polyvinyl chloride and ethylene propylene diene monomer rubber are injected into a foaming mold and then are subjected to high-temperature heating and then are molded at one step.
5. The process of claim 1, wherein the insole is formed by foaming EVA at a time.
6. The process for preparing a corrosion-resistant safety shoe according to claim 1, wherein the corrosion-resistant suspension net is made of a carbon fiber material.
7. The process for preparing the corrosion-resistant labor insurance shoes according to claim 1, wherein a protective layer is adhered on the semi-finished shoe upper layer in sole sewing, and the protective layer is polymerized by polyurethane rubber, nitrile rubber, polyvinyl chloride and ethylene propylene diene monomer.
8. The process for preparing a corrosion-resistant safety shoe according to claim 7, wherein the protective layer is designed to have a honeycomb structure at a position right above the steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430911.4A CN114098229A (en) | 2021-11-29 | 2021-11-29 | Preparation process of corrosion-resistant safety shoes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111430911.4A CN114098229A (en) | 2021-11-29 | 2021-11-29 | Preparation process of corrosion-resistant safety shoes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114098229A true CN114098229A (en) | 2022-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111430911.4A Pending CN114098229A (en) | 2021-11-29 | 2021-11-29 | Preparation process of corrosion-resistant safety shoes |
Country Status (1)
| Country | Link |
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| CN (1) | CN114098229A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6911408U (en) * | 1969-03-21 | 1969-11-06 | Kaspar Niessen Nachf Ohg | SAFETY SHOES WITH NATURAL UPPER LEATHER LARGE RESISTANT AGAINST AGRESSIVE LIQUIDS. |
| CN102241953A (en) * | 2010-05-11 | 2011-11-16 | 张苏侠 | Preparation method of phenolic resin-chloroprene rubber adhesive |
| CN202496519U (en) * | 2012-03-08 | 2012-10-24 | 刘裕喜 | Smashing-proof and puncture-proof device for shoe |
| CN204444435U (en) * | 2015-02-06 | 2015-07-08 | 佛山星期六科技研发有限公司 | A kind of have base plate in the footwear of carbon fiber composite structure |
| CN105330912A (en) * | 2015-11-13 | 2016-02-17 | 吴江市风尚鞋厂 | High temperature and corrosion resisting sizing material for rubber sole and preparing technology thereof |
| CN106108256A (en) * | 2016-06-28 | 2016-11-16 | 特步(中国)有限公司 | A kind of high-grade sport shoes automation and intelligentification processing technology |
| CN106750871A (en) * | 2017-03-08 | 2017-05-31 | 广东国立科技股份有限公司 | A kind of preparation method of the multi-functional EVA type movement leisure shoe soles of polychrome |
| CN212414919U (en) * | 2020-05-26 | 2021-01-29 | 四川猫王鞋业有限公司 | Insulating shoes for electric power construction |
| CN214630293U (en) * | 2021-03-03 | 2021-11-09 | 浙江海纳鞋业有限公司 | Corrosion-resistant and pressure-resistant safety shoe |
-
2021
- 2021-11-29 CN CN202111430911.4A patent/CN114098229A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6911408U (en) * | 1969-03-21 | 1969-11-06 | Kaspar Niessen Nachf Ohg | SAFETY SHOES WITH NATURAL UPPER LEATHER LARGE RESISTANT AGAINST AGRESSIVE LIQUIDS. |
| CN102241953A (en) * | 2010-05-11 | 2011-11-16 | 张苏侠 | Preparation method of phenolic resin-chloroprene rubber adhesive |
| CN202496519U (en) * | 2012-03-08 | 2012-10-24 | 刘裕喜 | Smashing-proof and puncture-proof device for shoe |
| CN204444435U (en) * | 2015-02-06 | 2015-07-08 | 佛山星期六科技研发有限公司 | A kind of have base plate in the footwear of carbon fiber composite structure |
| CN105330912A (en) * | 2015-11-13 | 2016-02-17 | 吴江市风尚鞋厂 | High temperature and corrosion resisting sizing material for rubber sole and preparing technology thereof |
| CN106108256A (en) * | 2016-06-28 | 2016-11-16 | 特步(中国)有限公司 | A kind of high-grade sport shoes automation and intelligentification processing technology |
| CN106750871A (en) * | 2017-03-08 | 2017-05-31 | 广东国立科技股份有限公司 | A kind of preparation method of the multi-functional EVA type movement leisure shoe soles of polychrome |
| CN212414919U (en) * | 2020-05-26 | 2021-01-29 | 四川猫王鞋业有限公司 | Insulating shoes for electric power construction |
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| Title |
|---|
| 周永凯: "《现代实用鞋靴材料学》", 31 March 2014, 中国轻工业出版社 * |
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Application publication date: 20220301 |