Rubber and plastic puncture-proof multifunctional shoe sole and preparation method thereof

A puncture-proof and multi-functional technology, which is applied in the direction of shoe soles, footwear, and other household appliances, etc., can solve the problems of EVA foam soles such as airtightness, slipping and grinding of soles, slipping and odor, etc., and achieve good anti-slip performance and surface Good smoothness and resilience

Pending Publication Date: 2020-08-18

软慕新材料科技(苏州)有限公司 +1

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AI-Extracted Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a rubber-plastic elastomer puncture-resistant multifunctional sole and its preparation method to solve the problems of the exis...

Method used

3), prepare protective layer, select the high tenacity spinning line of pulping treatment, three-dimensional weaving, build three-dimensional cloth space, promote cloth thickness simultaneously, tenacity strengthens substantially simultaneously; The anti-puncture cloth cutting molding of choosing, for subsequent use . Sizing and dyeing penetrating agent is added to the pulping process to improve the uniformity of the single cross-sectional area of the spinning yarn, the uniformity is improved, and the overall strength stability is improved, and then the three-dimensional weaving of the textile-formed fabric, the single-layer fabric can reach the same as the ordinary textile fabric of the raw material With several layers of superimposed toughness, the overall toughness and strength are greatly improved, and the high-tenacity yarn is made of textile fiber and TPU.

In this embodiment, described contact layer, protective layer, elastic layer, the outer edge of contact layer is provided with the flanging that turns down, and the outer edge of described protective layer is provided with the flanging that turns down, and elastic layer and protective layer After lamination, it is embedded in the hem of the protective layer, and then attached to the contact layer and embedded in the hem of the contact layer. After the contact layer, protective layer, and elastic layer are laminated, the lower end of the hem of the contact layer and the lower end of the hem of the protective layer respectively flush with the bottom surface of the elastic layer. It achieves fit and alignment, better integrity, and after molding, the overall strength is better and the service life is longer.

In this embodiment, described cork layer is cork granule molding, and thickness is 1.2mm, and hardness is Shore A38; Described protective layer is three-dimensional weaving clot...

Abstract

The invention discloses a rubber and plastic puncture-proof multifunctional shoe sole and a preparation method thereof. The shoe sole comprises a shoe sole body, the shoe sole body comprises an upperlayer, a middle layer and a lower layer, the upper layer is a contact layer, the middle layer is a protective layer, the lower layer is an elastic layer, the contact layer is a cork layer formed by cork particles, the protective layer is an anti-puncture cloth filling layer, and the elastic layer is an EVA rubber elastomer layer. In order to give full play to the advantages of the EVA rubber elastomer and the softwood, a comfortable casual shoe sole is provided for consumers, the problems that EVA materials are not resistant to abrasion and poor in tensile strength are solved, and meanwhile the rebound resilience of the materials is enhanced; the airtight problem of the EVA rubber composite elastomer is solved; in order to prevent the problems that dust enters the shoe and the foot protection effect is poor due to the eyelet network structure of the outer bottom layer, the middle layer uses the air-permeable puncture-proof cloth material with proper thickness as the functional layer, so that the dust can be prevented from entering the shoe, and the foot can be protected from being stabbed by sharp objects.

Application Domain

SolesDomestic articles

Technology Topic

EngineeringFoot protection +3

Image

Examples

Experimental program(2)

Example Embodiment

[0036] Example one

[0037] As shown in the figure, a rubber-plastic puncture-proof multifunctional shoe sole and a preparation method thereof include a sole body 1, the sole body comprising a three-layer structure of upper, middle and lower, the upper layer is the contact layer 2, the middle is the protective layer 3, and the lower layer is The elastic layer 4, the contact layer is a cork layer formed by cork particles, the protective layer is a puncture-proof cloth filled layer, and the elastic layer is a composite layer of EVA and rubber.

[0038] In this embodiment, the cork layer is compression molding of cork particles with a thickness of 1.2mm and a hardness of Shore A38; the protective layer is a three-dimensional woven cloth with a thickness of 1.2mm; the thickness of the elastic layer is 9.6mm, The hardness is Shore A50. The three-dimensional weaving process of the protective layer achieves the technical effect of increasing the toughness and strength of a single layer by several times. At the same time, the sense of space is more abundant than the general textile process, and the air permeability effect is better.

[0039] In this embodiment, the cork layer of the contact layer is a cork spliced surface material with a thickness of 1.2mm and a hardness of Shore A38; the thickness of the protective layer is 1.2mm; the thickness of the elastic layer is 9.6mm, and the hardness is Shore A38. A50.

[0040] In this embodiment, the thickness ratio of the contact layer, the protective layer, and the elastic layer is 6:7:37.

[0041] In this embodiment, the contact layer, the protective layer, the elastic layer, the outer edge of the contact layer is provided with a downturned edge, the outer edge of the protective layer is provided with a downturned edge, after the elastic layer and the protective layer are attached Embedded in the folded edge of the protective layer, and then attached to the contact layer and embedded in the folded edge of the contact layer. After the contact layer, the protective layer, and the elastic layer are laminated, the lower end of the contact layer and the lower end of the protective layer The bottom end of the layer is flush. Realize the fit and alignment, the integrity is better, after the compression molding, the overall strength is better, and the service life is longer.

[0042] In this embodiment, the structure obtained after the elastic layer is molded and foamed with an EVA rubber-plastic elastomer is provided with a network line-like cross-distributed hole group structure 5, and the hole diameter is 0.5 mm.

[0043] In this embodiment, the perforation group structure is concentrated on the arch and forefoot. The perforation group structure is designed at the main sweat vapor evaporation position to maximize the protection of sweat vapor while reducing the processing of the number of perforation groups. There are few or no perforation groups in other areas to ensure the actual tensile strength of the overall sole and simplify processing. Craft.

[0044] A rubber-plastic puncture-proof multifunctional shoe sole and a preparation method thereof include the following steps:

[0045] 1). Preparation of contact layer: take 45 parts by mass of cork particles processed and crushed from cork raw materials, 45 parts by mass of single-component FZ-506 polyurethane, and 6 parts by mass of lubricant stearic acid, and put the above materials into the mixture The mixer performs a rubber mixing process to prepare a rubber mixture, and then performs compression molding, and the prepared raw material is trimmed and formed for use.

[0046] 2) Preparation of the elastic layer: primary banburying: adding the EVA5110J, EPDM, modified starch, POE, zinc oxide, and zinc stearate to the internal mixer for banburying for 6 minutes, and the temperature is maintained at 110°C; Banburying: add blowing agent AC to the internal mixer and banbury for 3 minutes; triple banbury: add the crosslinking agent and continue to banbury for 3 minutes to obtain the mixture; pull the obtained mixture on the open mixer and foam on the flat plate On the machine, a special template is used for molding and foaming to obtain an elastic shoe material with a thickness and structure suitable for the middle layer. The molding and foaming conditions: time 6min, molding temperature 170℃.

[0047] 3) Prepare the protective layer, choose pulped high-tenacity spinning yarns and three-dimensional textiles to create three-dimensional fabric space, while increasing the thickness of the fabric, and the toughness is greatly enhanced at the same time; the selected puncture-resistant fabric is cut into shape for use. The pulping process adds the dye penetrant to improve the uniformity of the toughness of the single cross-sectional area of the spinning line, the uniformity is improved, the overall strength stability is improved, and then the three-dimensional weaving fabric is formed, and the single-layer fabric can reach the same raw material as the ordinary textile fabric. The overall toughness and toughness strength of several layers are greatly improved, and the high-tenacity spinning yarn is made of textile fiber and TPU.

[0048] 4). Place the substrates prepared in steps 1), 2), and 3) from bottom to top in order of elastic layer, protective layer, and contact layer. Glue between the layers, neatly fit, and heat-molded to obtain the Need products.

[0049] In this embodiment, in the step 4), the heating molding process is performed, the heating temperature is 170° C., the molding pressure is 5 MPa, the molding time is 30 seconds, and the mold is trimmed to obtain the desired product.

[0050] In this embodiment, the modified starch is made by grafting corn starch with vinyl acetate and contains ester groups that can be chemically cross-linked with EVA, thus actually introducing hydrophilic hydroxyl groups into the EVA elastomer Therefore, to realize that the composite elastic layer has better hygroscopicity, in a specific test, under a standard environment, the amount accounts for 5% of its own weight.

[0051] In this embodiment, in the step 1), stearic acid and modified starch are simultaneously added to the internal mixer. Ensure that the two are fully mixed to ensure that the roller does not stick during the banburying process.

[0052] In this embodiment, in the step 2), the blowing agent AC is added to the internal mixer at a temperature of 120°C in the internal mixing environment, and the resulting mixture is drawn on the open mixer; added to the template on the flat foaming machine The above pull tab is molded and foamed to obtain an outer elastic shoe material with a thickness suitable for the requirements. The molding and foaming conditions are: the foaming time is 6 minutes, the temperature is 170° C., and the pressure is 8 MPa. Then, the finished EVA rubber-plastic elastomer foamed shoe material with the thickness and structure of the elastic layer meeting the requirements can be obtained, the thickness is generally 9.6-10.5mm, and it is cut into the sole shape of the required size.

[0053] In this embodiment, the molding material of the anti-puncture layer is provided with three uniformly distributed through holes in the front and back. In the glue application process, the glue flows into the through hole, and it is in contact with the upper and lower adjacent layers to achieve additional sag bonding. After compression molding, the overall connection quality is stable and better, the material is more comfortable, and the service life is longer. .

Example Embodiment

[0054] Example two

[0055] In this embodiment, the cork layer is compression molding of cork particles with a thickness of 1.6mm and a hardness of Shore A40; the protective layer is a three-dimensional woven cloth with a thickness of 1.8mm; the thickness of the elastic layer is 10.5mm, The hardness is Shore A60. The three-dimensional weaving process of the protective layer achieves the technical effect of increasing the toughness and strength of a single layer by several times. At the same time, the sense of space is more abundant than the general textile process, and the air permeability effect is better.

[0056] In this embodiment, the cork layer of the contact layer is a cork spliced surface material with a thickness of 1.6mm and a hardness of Shore A40; the thickness of the protective layer is 1.8mm; the thickness of the elastic layer is 10.5mm, and the hardness is Shore A40. A60.

[0057] In this embodiment, the structure obtained after the elastic layer is molded and foamed with an EVA rubber-plastic elastomer is provided with a network line-like cross-distributed hole group structure, and the hole diameter is 0.8 mm.

[0058] 1). Preparation of contact layer: take 50 parts by mass of cork particles processed and crushed from cork raw materials, 50 parts by mass of single-component FZ-506 polyurethane, and 10 parts by mass of lubricant stearic acid, and put the above materials into the mixture The mixer performs a rubber mixing process to prepare a rubber mixture, and then performs compression molding, and the prepared raw material is trimmed and formed for use.

[0059] 2) Preparation of the elastic layer: one-time banburying: adding the EVA5110J, EPDM, modified starch, POE, zinc oxide, and zinc stearate to the internal mixer for banburying for 6 minutes, and the ambient temperature is kept at 120°C; Secondary banburying: continue to add the blowing agent AC to the internal mixer for banburying for 3 minutes; three banburying: add the crosslinking agent into the internal mixer and continue banburying for 3 minutes to obtain the mixture; pull the obtained mixture on the open mixer , Use a special template to mold and foam on a flat foaming machine to obtain an elastic shoe material with a thickness and structure suitable for the middle layer. Molding foaming conditions: time 6min, molding temperature 170℃.

[0060] In this embodiment, in the step 4), the heating molding process, the heating temperature is 170° C., the molding pressure is 9 MPa, the continuous pressing is 30 seconds, and the mold is trimmed to obtain the desired product.

[0061] In this embodiment, the modified starch is made by grafting corn starch with vinyl acetate and contains ester groups that can be chemically cross-linked with EVA, thus actually introducing hydrophilic hydroxyl groups into the EVA elastomer Therefore, it is realized that the composite elastic layer has better moisture absorption than pure EVA material. In the actual test, in a standard environment, and the temperature parameter is increased by 5 degrees Celsius alone, the specific moisture absorption accounted for 8% of its own weight.

PUM

Property	Measurement	Unit
Thickness	1.2	mm
Thickness	9.6	mm
Thickness	1.6	mm

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