CN113598480A - Waterproof dirt-resistant sole and shoe and production method thereof - Google Patents
Waterproof dirt-resistant sole and shoe and production method thereof Download PDFInfo
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- 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
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- 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
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Abstract
The invention belongs to the technical field of shoemaking, and particularly relates to a waterproof and dirt-resistant sole, a pair of shoes and a production method of the waterproof and dirt-resistant sole. The sole composed of the outsole, the TPU waterproof film layer and the midsole can be made into films with various colors according to needs, so that the sole presents different colors and hierarchical effects. The sole provided by the technical scheme of the invention can realize three materials, three lines and three colors, and has excellent hydrolysis resistance, tear resistance and bending resistance. The TPU waterproof film is thin and conformable, and can form excellent laminating effect with EVA, rubber or PU. The unique manufacturing process provided by the invention enables the rough edges of the shoe initial products to be the TPU waterproof film layers, so that the trimming is simple and quick, and compared with the traditional method, the trimming surface at the trimming position of the shoe finished products is greatly reduced, and the attractiveness is enhanced. In addition, the quantity of the trimmed waste TPU waterproof film layer is controllable, the material waste of the shoe is reduced, the material utilization rate is improved, and the production cost is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of shoemaking, and particularly relates to a waterproof and dirt-resistant sole, a pair of shoes and a production method of the waterproof and dirt-resistant sole.
Background
Along with the improvement of the living standard of people, the shoe consumption requirements are more and more diversified, the shoe consumption requirements are not limited to the wearing and walking comfort, and the functional requirements of the consumers on individuation, attractiveness, water resistance, dirt resistance and the like of the appearance of the shoe are continuously improved. How to improve the production efficiency of shoes and the utilization rate of shoe making materials and how to reduce the pollution of the shoe making industry to the environment also becomes a new subject faced by the traditional industry.
The structure of the shoe can be generally divided into two major parts, namely a sole and an upper. For the sole, the sole is mostly produced by respectively producing an outsole and a midsole, and then respectively coating the outsole and the midsole with treated water and glue for bonding. When the sole has the color design, the operation such as color spraying is required to be carried out on the sole, the process is complicated, and a lot of waste such as leftover materials are easily generated. Later, a new injection molding process is gradually developed, the produced outsole is placed into a midsole mold, and then a midsole material is poured into the midsole mold, so that a production mode of forming the midsole on the outsole is achieved. In order to obtain the waterproof sole, a process is also developed, wherein a TPU film is completely coated outside a middle sole made of rubber, PU or EVA and the like to form a middle sole of the TPU film, then a rubber or TPU outer sole is attached, and the middle sole vamp and the vamp are cold bonded together by using an adhesive.
However, the method has many defects, such as low production efficiency, easy glue failure of the sole, single appearance, high labor cost, serious material waste and the like. More information about the above-described solutions can also be found in the following documents.
The invention patent application TW201414435A in Taiwan area of China integral forming manufacturing method of double-hardness foaming sole discloses a manufacturing method of integral forming of foaming sole, a first blank and a second blank are respectively rolled and taken out, and are cut into a first primary shape object and a second primary shape object, wherein, the hardness of the first blank is higher than that of the second blank; placing the first primary shape object into a patterned shoe body mould, and primarily pressing into a first molded object; putting the second primary shape object into a plane mould to be initially pressed into a second molded object; taking the second formed object out of the plane mould and placing the second formed object at a preset position corresponding to the first formed object; simultaneously placing the first molded object and the second molded object in a mold; covering the mold, and foaming and vulcanizing the first molding material and the second molding material in the mold at a proper temperature for a proper time; after foaming and vulcanization are completed, the mold is opened and an integrally formed article having a predetermined shape of the first formed article and the second formed article is taken out. The method for manufacturing the sole has high requirements on the components of the two blanks, and needs to carry out hot pressing twice and carry out foaming and vulcanization on the two materials, so that the operation process is not easy to control, the production efficiency is low, and the yield is low.
The invention discloses a method for manufacturing a multi-layer sole and shoes thereof, and the method comprises the following steps: A. firstly, manufacturing a midsole lining with the same size and shape as the midsole; B. then, the insole liner is placed into a mold cavity in a mold, and shoe outsole manufacturing materials are injected; C. then taking out the inner lining of the middle sole when the shoe outsole is immature, and vertically arranging a plurality of steel cores in the grooves of the unformed shoe outsole; then implanting the material of the shoe midsole into the grooves to form the shoe midsole; D. and taking out the steel core, starting an injection molding machine, and performing injection molding on the insole in the mold in a through hole formed by taking out the steel core at the temperature of 250-300 ℃ and under the pressure of 120-150 tons to form an insole tightly combined with the outsole, so that the outsole and insole integrated forming structure is obtained. E. Carrying out film covering treatment on the integrated structures of the shoe outsole and the shoe midsole; F. and cleaning the surface to obtain the multi-layer sole. The manufacturing method connects the outsole and the middle sole by the connecting structure formed between the molded midsole and the injection molded outsole through the preset position of the steel core, the manufacturing process is complicated, more raw materials are applied, and the process is not easy to control.
The invention discloses a formula and a manufacturing method of an injection molded foaming sneaker sole imitating PU foaming and disclosed by Chinese invention patent CN101805475B, and the manufacturing method comprises the following post-treatment processes of material weighing, banburying, open mixing, granulation, injection molding, constant temperature box shaping, QC inspection, surface treatment, physical property sampling and testing, packaging and warehousing, shipment or rubber outsole to be combined and the like. The method is only a method for manufacturing the middle sole or the large sole or the sole with the large sole or the middle sole, the appearance and the color of the finished product are single, and the design feeling is poor.
Other existing integrally-formed sole manufacturing methods probably pay attention to consumption requirements of layers and colors, but due to overflow of foaming materials in the injection molding process, redundant leftover materials need to be trimmed and removed in the post-processing process, in the process, even if the process is operated by skilled workers, a lot of defective products are generated, and the wider cut surface left after trimming affects the attractiveness of the sole. The color requirements still need to be fulfilled by post-treatment of the paint.
Disclosure of Invention
In view of the above-mentioned technical problems in the background art, it is desirable to provide a waterproof and dirt-resistant sole, a shoe and a method for producing the same. The waterproof and dirt-resistant sole adopts an integrated forming technology to achieve the purpose of improving the production efficiency of the sole and the shoe, and the sole needs to have the advantages of layering, novel color, shock absorption, comfort and wear resistance. The production method of the waterproof dirt-resistant sole and the waterproof dirt-resistant shoe depends on manual technology as little as possible, has few applied raw materials and simple procedures, and particularly aims to achieve the purposes of high production efficiency, high yield and low material waste.
In order to achieve the above object, according to a first aspect of the present invention, the inventor provides a waterproof and dirt-resistant sole, which includes an outsole, a waterproof film layer and a midsole, wherein the waterproof film layer is tightly attached to the outsole and covers a lower half portion of the midsole, the lower half portion is an area of the midsole near the outsole, and the waterproof film layer is TPU.
It will be appreciated that the waterproof and dirt-resistant sole is made up of three parts and that the waterproof membrane layer provides a two-way covering of the outsole and midsole. Because the waterproof film layer is a film, under the condition of pressure, the waterproof film layer is pressed and attached to the corresponding attaching surfaces of the outsole and the midsole. The waterproof membrane layer is TPU. TPU (thermoplastic polyurethanes) is named as thermoplastic polyurethane, is also called as a waterproof moisture-permeable film, has excellent characteristics of high tension, toughness and aging resistance, is a mature environment-friendly high-molecular polymer, and can be used for jointing clothing and shoe material fabrics. The TPU can bear water pressure of more than 10000mm, the thickness of the TPU can be as thin as 0.012mm, and the TPU has incomparable physical performance on waterproof property compared with other materials. If the thermoplastic polyurethane is heated at the same time, the TPU material of the waterproof film layer has an adhesive effect due to thermal softening. Therefore, the sole eliminates the need for additional steps and materials for applying an adhesive to the outsole and the midsole after the outsole and the midsole are treated.
In addition, TPU also has good abrasion resistance, puncture resistance, buckling strength and low temperature impact strength, and the resistance to tearing and crack propagation of TPU is the best of the plastic materials. Preferably, the thickness of the waterproof membrane layer is 0.2-0.5 mm.
Due to the excellent noise reduction and shock absorption performance and the consideration of the injection molding process in the integrated production of the sole, the fluidity of the long foam in the milky white stage of the foaming material is good, which is beneficial to the distribution of the raw materials in the mold. Preferably, the material of the middle sole is foamed PU.
Preferably, the outsole is of a hollow or closed structure. The technical scheme of the invention has no special requirements on the overall shape and structure of the outsole and even the thickness of the outsole. For example, the outsole may be a thin or thick material suitable for the sole region, and may be provided with various designs of patterns, designs, or indentations on the side facing the ground. Therefore, the outsole can be a complete shoe type closed structure or an incomplete partial shoe type hollow structure. When the outsole is of a hollow structure, it can be known that the hollow part of the outsole is filled with the TPU waterproof film through negative pressure adsorption. As an exemplary embodiment, the material of the outsole is selected from one of rubber, PU or TPU.
In a second aspect of the invention, the inventors provide a waterproof dirt-resistant shoe comprising a sole according to the first aspect of the invention. The waterproof and dirt-resistant shoe has excellent waterproof function because of the TPU waterproof film layer coated on the outer layer of the sole. Dirt resistance means that dirt on the sole can be easily removed, and waterproof is realized by the sole of the invention, wherein the foamed PU with the TPU coated on the sole can be directly wiped to remove dirt without leaving any mark.
In a third aspect of the present invention, the present inventors provide a method for manufacturing waterproof and dirt-resistant footwear, comprising the steps of:
placing the pretreated outsole in a mold cavity of a shoe making machine, wherein the outsole is made of one material selected from rubber, PU (polyurethane) or TPU (thermoplastic polyurethane);
fixedly placing a waterproof membrane with a proper size on the upper part of the outsole;
heating the waterproof membrane;
applying a proper negative pressure to make the waterproof film adhere to the outsole;
injecting a preset amount of foaming PU slurry to the upper part of the waterproof membrane to obtain a midsole;
the vamp part of the last of the mold arranged on the shoe making machine is tightly attached to the insole with certain pressure;
cooling, solidifying, demoulding and trimming burrs to obtain the waterproof and dirt-resistant shoe.
The method for manufacturing waterproof and dirt-proof shoes provided by the invention is the method for manufacturing soles, which is the biggest difference from the prior art. The pretreated outsole is an outsole prefabricated member which is polished or washed after surface impurities and foreign matters are removed. The size of the outsole corresponds to the size of the shoe of the preset size to be manufactured, and correspondingly, the size of the mold cavity of the mold for manufacturing the shoe is also equivalent, and the mold release agent is coated in advance. The material of the large bottom can be selected from one of rubber, PU or TPU. And fixing the waterproof membrane with proper size cutting on the upper part of the outsole by using a positioning nail, a positioning frame or a positioning buckle and other structures, so that a cavity with the shape of the outsole is formed between the waterproof membrane and the outsole. And heating the waterproof membrane until the waterproof membrane is in a softened but unmelted state, starting a negative pressure equipment switch communicated with the mold cavity, applying proper negative pressure to enable the waterproof membrane to be attached to the outsole, and obtaining an outsole groove which is consistent with the outline of the outsole structure and matched with the mold cavity and has a certain accommodating space. Injecting a preset amount of foaming PU slurry into the groove of the outsole, and then attaching the vamp part of a mold last which is arranged on a shoe making machine in advance to the insole with a certain pressure, wherein the process is completed by means of the closing action of the mold. The pressure that the upper die pushed down makes foaming PU thick liquids in the big end recess not only with the waterproof membrane closely laminates, forms the foaming PU integration insole of cladding waterproof membrane, still makes the upper portion in the foaming PU integration insole of cladding waterproof membrane because the limit value of pressure and die cavity leads to foaming PU thick liquids to upwards spill over certain height and laminate completely with the bottom of vamp. And cooling, solidifying and demoulding to obtain the initial waterproof and dirt-resistant shoe. The primary product can be described as a vamp, foamed PU coated with TPU film (the TPU film is exposed and the foamed PU is coated) and a sole coated with TPU film from top to bottom. A circle of rough edges are formed at the connecting position of the foaming PU integrated insole coated with the waterproof film and the vamp, and the size of the waterproof film is measured and calculated, so that the quantity of the rough edges can be controlled in a minimum range to reduce the waste of materials.
In a preferred embodiment, the waterproof membrane is made of TPU, and the thickness of the waterproof membrane is 0.2-0.5 mm. Besides the requirement of the TPU for the attachment of the two-way coating of the outsole and the midsole, the lower half of the midsole is coated by the TPU to form a coated waterproof dirt-resistant layer, the thinner the thickness is, the better the coating is, and the bonding capability, the impact resistance protection and the waterproof dirt-resistant performance need to be considered. Through continuous test comparison, the thickness of the waterproof film layer is preferably 0.2-0.5 mm.
As a preferred embodiment, in the step of heating the waterproof film, a heating lamp tube is used for heating, the heating temperature is 140-. In this temperature range, the 0.2-0.5mm thick TPU waterproof film layer can be softened by heating to a desired softening degree, and further, the TPU waterproof film layer can be prevented from being broken by being excessively heated.
The cooling and solidifying time affects the opening and stability and the curing degree of the foamed PU, so that the time cannot be too short, otherwise, the opening effect or the curing degree of the foamed PU can be poor, and the indexes of rebound resilience, compression permanent deformation and the like of the finished sole of the later-stage shoe can be affected. However, the cooling and solidifying time is not too long, and in addition to affecting the production efficiency of the shoe, the curing degree is also affected by too long a cooling and solidifying time, which is 200 seconds and 300 seconds as a preferred embodiment.
Different from the prior art, the technical scheme at least has the following beneficial effects:
the sole composed of the outsole, the TPU waterproof membrane layer and the midsole can be made into films with various colors according to needs, so that the sole presents different colors and hierarchical effects. Further, the film can be processed into effects of dazzling, matte, transparent or gradient colors and the like according to needs. Therefore, the sole provided by the technical scheme of the invention can realize three materials (an upper foaming PU material, a middle TPU waterproof film coated with the foaming PU material, a lower TPU waterproof film coated with a outsole material), three lines and three colors. The TPU waterproof film is thin and conformable, and can form an excellent laminating effect with EVA, rubber or PU. Due to the excellent waterproof performance, tearing resistance and crack propagation resistance of the TPU material, the dirt-resistant waterproof sole provided by the invention has excellent hydrolysis resistance, tearing resistance and bending resistance. According to the unique manufacturing process provided by the third aspect of the invention, the rough edges of the shoe initial product are the TPU waterproof film layers, so that trimming is simple and rapid, and compared with the traditional method, the trimming surface of the trimmed shoe finished product is greatly reduced, and the attractiveness is enhanced. In addition, the quantity of the trimmed waste TPU waterproof film layer is controllable, the material waste of the shoe is reduced, the material utilization rate is improved, and the production cost is greatly reduced.
Drawings
FIG. 1 is a conventional waterproof sole for shoes according to the background art;
FIG. 2 is a schematic view of a preliminary product of a manufacturing process of another conventional waterproof sole according to the background art;
fig. 3 shows a waterproof and dirt-proof sole according to an embodiment of the present invention.
Description of reference numerals:
1. the PU middle sole is completely coated by the TPU film;
2. a rubber outsole;
11. foaming PU middle sole;
12. a TPU outsole;
101. a foamed PU layer;
102. a foamed PU layer is coated in the TPU waterproof film;
103. the TPU waterproof film coats the large bottom layer.
Detailed Description
To explain technical contents, structural features, and objects and effects of the technical solutions in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present application.
Embodiment 1 waterproof sole provided by the prior art
Referring to fig. 1, a waterproof sole of the prior art is shown. The waterproof sole consists of two parts, namely a PU middle sole 1 and a rubber big sole 2 which are completely covered by a TPU film from top to bottom. When the shoe is manufactured into the shoe, the vamp and the PU middle sole of the waterproof sole which is completely covered by the TPU film are adhered and fixed by the adhesive.
Although the shoe sole manufactured by the method has a certain waterproof effect, the shoe sole can only show double-layer, double-grain and double-color effects. In addition, the method of cold-stick attachment of adhesives is also prone to adhesive failure during wear.
Example 2 another waterproof shoe sole initial product provided by the prior art
Referring to fig. 2, a schematic view of another waterproof shoe sole of the prior art is shown. The waterproof sole consists of two parts, namely a foamed PU middle sole 11 and a TPU big sole 12 from top to bottom. As the shoe is manufactured by adopting the integral molding injection molding process, the periphery of the foaming PU insole is provided with more burrs which are formed by solidifying the overflowing foaming PU aside. When this deckle edge is pruned in the later stage, need the technical worker to master the degree of cooperation of pruning limit machine and the operation of hand motion radian, the operation requires highly to the technical skill degree to finished product cut surface after the pruning broad, the pleasing to the eye degree of shoes is not high. In addition, the shoe is the same as the shoe in the embodiment 1, only can present the shoe soles with double-layer, double-grain and double-color effects, and has no substantial effect on the abundance of the styles of the shoe soles.
Example 3 waterproof dirt-resistant shoe sole, shoe and method for producing the same
Referring to fig. 3, a schematic view of a waterproof and dirt-proof sole according to an embodiment of the present invention is shown. The waterproof and dirt-resistant sole is composed of three layers, wherein the upper part is a foamed PU layer 101, the middle TPU waterproof film is coated with a foamed PU layer 102, and the lower TPU waterproof film is coated with a large bottom layer 103. Specifically, waterproof resistant dirty sole includes the outsole, waterproof rete (the material is TPU), insole (the material is foaming PU), the outsole is hugged closely to waterproof rete to the cladding in the latter half of insole forms TPU waterproof membrane inner cladding foaming PU layer 102, the latter half is the region that the insole is close to the outsole, waterproof rete is TPU. The waterproof film layer is tightly attached to the outsole and filled in the hollow part of the hollow rubber outsole. In different embodiments, the outsole may also be a flat or concave-convex closed structure processed to have a carving effect and various pattern effects. In other embodiments, the material of the outsole may be one of PU or TPU. The thickness of the TPU waterproof film used for the waterproof film layer is 0.05mm, and the color is brown.
The method for manufacturing the waterproof and dirt-resistant shoe of the embodiment comprises the following steps:
the rubber outsole after polishing, cleaning, impurity removal and other pretreatment is placed in a mold cavity of a shoe making machine, and the mold cavity is coated with a common mold release agent in advance. In different embodiments, the outsole material may also be selected from one of PU or TPU;
fixedly placing a TPU waterproof film cut into a proper size on the upper part of the outsole by using a fixing frame, wherein the thickness of the TPU waterproof film used for the waterproof film layer is 0.05 mm;
heating the waterproof membrane by using a heating lamp tube, setting the heating temperature to be 140-;
applying appropriate negative pressure (1-2 atmospheres) to make the waterproof film tightly fit on the outsole. Obtaining a big bottom groove which is consistent with the outline of the big bottom structure and is matched with the die cavity and provided with a certain accommodating space;
injecting a preset amount of foaming PU slurry into a big bottom groove which is formed in the upper part of the waterproof membrane, has the same contour with the big bottom structure and is matched with the mold cavity and provided with a certain accommodating space, so as to obtain a middle bottom;
by means of the closing action of the mould, the vamp part of the mould last arranged on the shoe making machine is tightly attached to the insole;
cooling and solidifying for 200s, and demolding to obtain the initial product of the waterproof and dirt-resistant shoe. The primary product can be described as a vamp, a foamed PU layer 101, a TPU waterproof film coated with a foamed PU layer 102 (the TPU film is exposed, and the foamed PU is coated inside) and a TPU waterproof film coated with a large bottom layer 103 from top to bottom. Forming a circle of rough edges at the place where the foaming PU integrated insole of the coating waterproof film is connected with the vamp, trimming the rough edges of the TPU waterproof film, wherein the time for trimming one shoe rough edge is about 30s, and obtaining the waterproof and dirt-resistant shoe.
Example 4
The difference from the example 3 is that the thickness of the TPU waterproof film used for the waterproof film layer is 0.2mm, and the color is blue dazzling color.
Example 5
The difference from the example 3 is that the thickness of the TPU waterproof film used for the waterproof film layer is 0.5mm, and the color is yellow.
Example 6
The difference from the example 3 is that the thickness of the TPU waterproof film used for the waterproof film layer is 0.3mm, and the color is transitional purple.
Example 7
The difference from the example 3 is that the thickness of the TPU waterproof film used for the waterproof film layer is 0.55mm, and the color is yellow.
The shoes prepared in examples 1 to 7 were subjected to the visual effect-based consumer interest survey, the bending resistance, the tear resistance, the hydrolysis resistance, the slip-resistant coefficient of static friction and the yellowing rating test, respectively, according to the following test methods:
the method for testing the bending resistance comprises the following steps: placing a waterproof and dirt-resistant sole sample to be tested on a GOTECH bending instrument, bending the waterproof and dirt-resistant sole sample to 45 degrees at normal temperature, bending 100 times per minute, and continuously bending 125000 times, wherein the sole is qualified without being damaged.
The tear resistance test is carried out by adopting a GOTECH tensile tester, the waterproof and dirt-resistant sole to be tested is cut into long strips with the width of 1cm and the length of 15cm, and the width is 25N/cm2The tensile force of (2) was tested at a rate of 150mm/min and the tensile force at break was recorded.
The hydrolysis resistance is tested by adopting a GOTECH hydrolysis meter, the waterproof and dirt-resistant sole to be tested is cut into strips with the width of 1cm and the length of 15cm and is placed in the hydrolysis meter, the testing conditions are that the temperature is 60 ℃, the humidity is 95 percent, the testing time is continuously carried out for 7 days, and the result is qualified that the sole does not crack and the color is not transparent.
The yellowing grade is tested by adopting a GOTECH 7035EUA yellowing resistance test box. The specific test method comprises the following steps:
1. cutting a waterproof and dirt-resistant sole to be tested into a long strip with the width of 1cm and the length of 15cm, placing the long strip in a sample box, and covering the head end and the tail end of the sample with shading sheets at positions of 20mm respectively;
2. opening a door of the test chamber, placing the sample in a turntable area between two concentric circles with the diameters of 75mm and 300mm, wherein the irradiated surface of the sample faces a light source;
3. the height between the bottom edge of the bulb and the surface of the sample is measured by using a straight steel ruler, the fixing button below the rotary disc is unscrewed, the rotary disc is moved to enable the surface of the sample to be parallel to the bottom edge of the bulb and keep a distance of about 250 +/-2 mm, and the fixing button is locked and fastened. And then judging the result according to the gray card.
The test results are shown in table one:
TABLE-results of the Performance test of shoes comprising soles according to examples 1 to 7
As can be seen from the comparative analysis of the data in the table I, the soles manufactured by the prior art can only present the visual effects of two colors, two layers and two grains in the visual effect. Example 1 failed the 125000 test in terms of bending resistance and also failed the hydrolysis resistance test. In the whole, the Chinese TPU film is completely coated in the traditional technology, and then the middle sole and the large sole are subjected to cold bonding, so that the anti-tearing performance of the sole is flat, and the anti-tearing performance of the sole of the technical scheme of the invention is obviously improved.
It should be noted that, although the above embodiments have been described herein, the invention is not limited thereto. Therefore, based on the innovative concepts of the present invention, the technical solutions of the present invention can be directly or indirectly applied to other related technical fields by making changes and modifications to the embodiments described herein, or by using equivalent structures or equivalent processes performed by the contents of the present specification and the attached drawings, which are included in the scope of the present invention.
Claims (10)
1. The utility model provides a waterproof resistant dirty sole, its characterized in that includes the undersole, waterproof rete and insole, the undersole is hugged closely to waterproof rete, and the cladding in the latter half of insole, the latter half is the region that the insole is close to the undersole, waterproof rete is TPU.
2. The waterproof and dirt resistant sole of claim 1, wherein the waterproof membrane layer has a thickness of 0.2-0.5 mm.
3. The waterproof and dirt-resistant sole of claim 1, wherein the midsole is made of foamed PU.
4. The waterproof and dirt-resistant sole of claim 1, wherein the outsole is a hollowed or closed structure.
5. The waterproof and dirt-resistant sole according to claim 4, wherein the outsole is made of one material selected from rubber, PU and TPU.
6. A waterproof and dirt-resistant shoe, characterized by comprising the sole according to any one of claims 1 to 5.
7. A method for manufacturing waterproof and dirt-resistant shoes is characterized by comprising the following steps:
placing the pretreated outsole in a mold cavity of a shoe making machine, wherein the outsole is made of one material selected from rubber, PU (polyurethane) or TPU (thermoplastic polyurethane);
fixedly placing a waterproof membrane with a proper size on the upper part of the outsole;
heating the waterproof membrane;
applying a proper negative pressure to make the waterproof film adhere to the outsole;
injecting a preset amount of foaming PU slurry to the upper part of the waterproof membrane to obtain a midsole;
the vamp part of the last of the mold arranged on the shoe making machine is tightly attached to the insole with certain pressure;
cooling, solidifying, demoulding and trimming burrs to obtain the waterproof and dirt-resistant shoe.
8. The manufacturing method according to claim 7, wherein the waterproof film is made of TPU and has a thickness of 0.2-0.5 mm.
9. The manufacturing method according to claim 7, wherein in the step of heating the waterproof film, a heating lamp tube is used for heating, the heating temperature is 140-150 ℃, and the heating time is 3 s.
10. The method as claimed in claim 7, wherein the time for cooling and solidifying is 200-300 s.
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| CN202011145943.5A CN113598480A (en) | 2020-10-23 | 2020-10-23 | Waterproof dirt-resistant sole and shoe and production method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114158827A (en) * | 2021-12-14 | 2022-03-11 | 晋江市无极激光工艺品工贸有限公司 | Method for manufacturing imitation Ru-kiln crack shoes |
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| TWM499789U (en) * | 2015-01-23 | 2015-05-01 | Horng Shing Products Co Ltd | Shoe big sole structure |
| CN205390523U (en) * | 2016-03-21 | 2016-07-27 | 福建省晋江市东风鞋塑有限公司 | Double -deck wear -resisting sole |
| CN106393543A (en) * | 2016-09-14 | 2017-02-15 | 佛山市南海创意鞋材有限公司 | Integrated forming technology for combined shoe sole |
| CN207023404U (en) * | 2017-08-07 | 2018-02-23 | 福建泉州中博新材料有限公司 | A kind of secondary MD footwear materials of overlay film shaping |
| CN210329530U (en) * | 2019-08-07 | 2020-04-17 | 广州市露积塑料制品有限公司 | Novel waterproof polyurethane sole and finished shoe |
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| TWM499789U (en) * | 2015-01-23 | 2015-05-01 | Horng Shing Products Co Ltd | Shoe big sole structure |
| CN205390523U (en) * | 2016-03-21 | 2016-07-27 | 福建省晋江市东风鞋塑有限公司 | Double -deck wear -resisting sole |
| CN106393543A (en) * | 2016-09-14 | 2017-02-15 | 佛山市南海创意鞋材有限公司 | Integrated forming technology for combined shoe sole |
| CN207023404U (en) * | 2017-08-07 | 2018-02-23 | 福建泉州中博新材料有限公司 | A kind of secondary MD footwear materials of overlay film shaping |
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| CN114158827A (en) * | 2021-12-14 | 2022-03-11 | 晋江市无极激光工艺品工贸有限公司 | Method for manufacturing imitation Ru-kiln crack shoes |
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