阅读说明：本技术 一种eva橡胶材质鞋子及其生产工艺 (EVA rubber shoe and production process thereof ) 是由 汪志红 于 2021-07-16 设计创作，主要内容包括：本发明公开了一种EVA橡胶材质鞋子及其生产工艺,包括鞋底以及鞋面,所述鞋底与所述鞋面一体射出成型结构,所述鞋底以及所述鞋面由EVA橡胶材料制成,所述鞋面包括限位壁以及包围部,所述限位壁与所述包围部形成放置空腔,人体的脚部设于所述放置空腔内。(The invention discloses an EVA rubber shoe and a production process thereof, and the EVA rubber shoe comprises a sole and a vamp, wherein the sole and the vamp are of an integrally injection molding structure, the sole and the vamp are made of EVA rubber materials, the vamp comprises a limiting wall and an enclosing part, a placing cavity is formed by the limiting wall and the enclosing part, and the foot of a human body is arranged in the placing cavity.)

1. The EVA rubber material shoe is characterized in that: comprises a sole (10) and an upper (20), the sole (10) and the upper (20) are of an integrated structure,

the vamp (20) comprises a limiting wall (21) and an enclosing part (22), the limiting wall (21) and the enclosing part (22) form a placing cavity (23),

the feet of the human body are arranged in the placing cavity (23),

the surrounding part (22) comprises a ventilation surface (221) and a ventilation wall (222), the ventilation surface (221) is provided with a plurality of ventilation holes (223), the ventilation wall (222) is provided with a plurality of slotted holes (224),

the air holes (223) can enable the air in the placing cavity (23) to play a role of circulation, the slotted holes (224) can enable the moisture in the placing cavity (23) to be discharged outwards through the slotted holes (224),

the sole (10) surface is equipped with a plurality of antislip strips (11), antislip bump (12) are equipped with on antislip strip (11) surface.

2. The surfaces of the limiting wall (21) and the surrounding part (22) at the inner side of the placing cavity (23) are provided with a plurality of friction salient points (25), the friction salient points (25) increase the friction force with the human body,

spacing hole (24) are evenly equipped with on spacing wall (21) both sides, spacing area can be connected in spacing hole (24), spacing area can strengthen human foot and be in place the stability in cavity (23).

3. The shoe made of the EVA rubber material according to claim 1, wherein: the sole (10) and the upper (20) are made of EVA rubber material.

4. A production process of EVA rubber material shoes is characterized in that: the method comprises the following steps:

s1, mixing and molding materials: adding EVA raw materials, mixing in an internal mixer, adding color filler, cross-linking agent, foaming agent and foaming auxiliary agent, mixing for 20-25min, uniformly mixing, and discharging to obtain EVA rubber composite material;

s2, EVA rubber granulation: the EVA rubber composite material to be granulated is automatically fed into a feeding machine through an automatic feeding machine, the feeding machine uniformly and orderly feeds the material into a plastic granulator main machine, the plastic granulator main machine realizes a granulation extrusion strip drawing process, a stainless steel cooling water tank in the plastic granulator main machine cools plastic strips extruded by a die head, a hobbing type granulator in the main machine can control the size of EVA rubber composite material particles through variable frequency control, and the particles are sucked into a storage bin through a draught fan for standby application;

s3, molding and shaping by an injection molding machine: pouring the granulated EVA rubber composite material into a material preparation barrel of an injection machine for injection process production, wherein the injection gun temperature of the injection machine is 94-100 ℃, the mold temperature of the injection machine is 170-190 ℃, the vulcanization time is 500-1200s, and cooling and demolding are carried out to obtain a shoe product;

s4, passing through an incubator: the shoe to be molded is placed into a thermostat after being demoulded, and the time for placing the thermostat is as follows: 15-40min, the temperature of the constant temperature box is 55-95 ℃;

s5, trimming: trimming the shoe product, adopting liquid nitrogen to enable burrs of the product to become brittle at low temperature, and using a bullet to beat the burrs so as to quickly remove the burrs;

s6, quality inspection: the product has clean surface, no flying, burr and the like, no impurities, no obvious scratches, no bubble-shaped protrusions, natural surface lines, no visible particles on the surface, no refraction defect, no sprue gate imprint, no flow mark and the like, and after a hot air aging test for 72 hours at 700C, the product has hardness change of not more than +/-15% IRHD, tensile strength change rate of not more than +/-30% and elongation at break of not more than-50%, according to the specific shape of a sample, no crack is generated by visual observation, and after a low-temperature test, the sample is not cracked by knocking, and after a high-temperature test, the sample has good elasticity and is not cracked;

s7, packaging and shipping: and packaging the products after the product inspection, and then discharging the products after loading.

5. The production process of the EVA rubber material shoes according to claim 3, characterized in that: the proportion of the EVA raw material, the color filler Talcum, the cross-linking agent DCP, the foaming agent AC and the foaming auxiliary agent AC is 20: 2: 2: 1: 1.

6. the production process of the EVA rubber material shoes according to claim 3, characterized in that: the temperature of the internal mixer in the step S1 is 50-60 ℃.

7. The production process of the EVA rubber material shoes according to claim 3, characterized in that: the grain diameter of the granules granulated in the step S2 is 2-4 mm.

8. The production process of the EVA rubber material shoes according to claim 3, characterized in that: the molding time of the injection molding machine in the step S3 is 8-20 min.

9. The production process of the EVA rubber material shoes according to claim 3, characterized in that: the color filler can be any color filler of any color.

Technical Field

The invention relates to the technical field of shoes, in particular to an EVA rubber shoe and a production process thereof.

Background

Shoes are the wearing article that people used commonly among the daily life, and traditional shoes all comprise two portions of sole and vamp, and traditional production technology vamp and sole are the separation preparation completion, and the rethread glue is the completion of vamp and sole bonding together and is connected, and traditional connected mode loses the adhesion stress easily at the in-process that uses, breaks away from between vamp and the sole and leads to the unable normal use of shoes.

Most of traditional shoes are made of plastic materials, but the plastic materials have no buffering effect, if people accidentally kick the shoes with the plastic materials, the feet of human bodies are damaged by the shoes without the buffering effect, plastics are difficult-to-degrade materials and can exist for decades to hundreds of years, so that the environmental protection performance of the shoes is poor, the shoes made of the plastics are easy to damage during collision, the use reliability of the shoes is reduced, the production process of the shoes is complex, the production cost is high, and the main defects of the traditional technology are overcome.

Disclosure of Invention

The invention solves the problem that the integral injection molding structure of the sole and the vamp increases the integral stability of the shoe.

The invention provides the following technical scheme: the EVA rubber material shoe is characterized in that: the shoe comprises a sole and a vamp, the sole and the vamp are of an integrally formed structure, the vamp comprises a limiting wall and an enclosing part, the limiting wall and the enclosing part form a placing cavity, the foot of a human body is arranged in the placing cavity, the enclosing part comprises a breathable surface and a breathable wall, the breathable surface is provided with a plurality of air holes, the breathable wall is provided with a plurality of slotted holes, the air holes can enable air in the placing cavity to play a circulating role, the slotted holes can enable moisture in the placing cavity to be discharged outwards through the slotted holes, the surface of the sole is provided with a plurality of anti-slip strips, the surfaces of the anti-slip strips are provided with anti-slip salient points, the surfaces of the limiting wall and the enclosing part on the inner side of the placing cavity are provided with a plurality of friction salient points which increase the friction force with the human body, and limiting holes are uniformly formed in two sides of the limiting wall, the limiting hole can be connected with a limiting belt, and the limiting belt can strengthen the stability of the human foot in the placement cavity.

Further, the sole and the vamp are made of EVA rubber materials.

The invention has the beneficial effects that: when the shoe is used, the sole and the vamp are integrally formed in an injection mode, so that the overall stability of the shoe body is enhanced, the limiting wall and the surface of the surrounding part in the cavity are provided with a plurality of friction bumps, and the friction bumps increase friction force to play an anti-skidding role.

The invention solves the problem that the shoes made of the EVA rubber material have the buffer effect and better protect the feet of the human body.

The invention provides the following technical scheme: a production process of EVA rubber material shoes is characterized in that: the method comprises the following steps:

s1, mixing and molding materials: adding EVA raw materials, mixing in an internal mixer, adding color filler, cross-linking agent, foaming agent and foaming auxiliary agent, mixing for 20-25min, uniformly mixing, and discharging to obtain EVA rubber composite material;

s2, EVA rubber granulation: the EVA rubber composite material to be granulated is automatically fed into a feeding machine through an automatic feeding machine, the feeding machine uniformly and orderly feeds the material into a plastic granulator main machine, the plastic granulator main machine realizes a granulation extrusion strip drawing process, a stainless steel cooling water tank in the plastic granulator main machine cools plastic strips extruded by a die head, a hobbing type granulator in the main machine can control the size of EVA rubber composite material particles through variable frequency control, and the particles are sucked into a storage bin through a draught fan for standby application;

s3, molding and shaping by an injection molding machine: pouring the granulated EVA rubber composite material into a material preparation barrel of an injection machine for injection process production, wherein the injection gun temperature of the injection machine is 94-100 ℃, the mold temperature of the injection machine is 170-190 ℃, the vulcanization time is 500-1200s, and cooling and demolding are carried out to obtain a shoe product;

s4, passing through an incubator: the shoe to be molded is placed into a thermostat after being demoulded, and the time for placing the thermostat is as follows: 15-40min, the temperature of the constant temperature box is 55-95 ℃;

s5, trimming: trimming the shoe product, adopting liquid nitrogen to enable burrs of the product to become brittle at low temperature, and using a bullet to beat the burrs so as to quickly remove the burrs;

s6, quality inspection: the product has clean surface, no flying, burr and the like, no impurities, no obvious scratches, no bubble-shaped protrusions, natural surface lines, no visible particles on the surface, no refraction defect, no sprue gate imprint, no flow mark and the like, and after a hot air aging test for 72 hours at 700C, the product has hardness change of not more than +/-15% IRHD, tensile strength change rate of not more than +/-30% and elongation at break of not more than-50%, according to the specific shape of a sample, no crack is generated by visual observation, and after a low-temperature test, the sample is not cracked by knocking, and after a high-temperature test, the sample has good elasticity and is not cracked;

s7, packaging and shipping: and packaging the products after the product inspection, and then discharging the products after loading.

The invention has the beneficial effects that: when the shoe is used, the shoe is integrally injection-molded, the shoe is made of EVA rubber materials, the EVA rubber materials have a good buffering effect, the anti-collision performance of the shoe body is improved, and the foot of a human body can be better protected.

Description of the drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic cross-sectional structure of the present invention.

FIG. 3 is a schematic view of the production process of the present invention.

Detailed Description

As shown in fig. 1 to 2, the shoe made of EVA rubber material includes a sole 10 and an upper 20, the sole 10 and the upper 20 are integrally formed, and the sole 10 and the upper 20 are made of EVA rubber material.

The vamp 20 comprises a limiting wall 21 and a surrounding part 22, and the limiting wall 21 and the surrounding part 22 form a placement cavity 23.

In practice, the feet of the human body are arranged in the placing cavity 23.

The surrounding portion 22 includes a ventilation surface 221 and a ventilation wall 222, the ventilation surface 221 is provided with a plurality of ventilation holes 223, and the ventilation wall 222 is provided with a plurality of slots 224.

In practical implementation, the ventilation holes 223 can allow air in the placing cavity 23 to circulate, and the slots 224 can allow moisture in the placing cavity 23 to be discharged outwards through the slots 224.

Spacing wall 21 both sides are all equipped with spacing hole 24, spacing area can be connected in spacing hole 24, spacing area can strengthen human foot and be in place the stability in the cavity 23.

The surfaces of the limiting wall 21 and the surrounding part 22 on the inner side of the placing cavity 23 are provided with a plurality of friction salient points 25, and the friction force between the friction salient points 25 and a human body is increased.

The surface of the sole 10 is provided with a plurality of anti-slip strips 11, and the surface of each anti-slip strip 11 is provided with anti-slip convex points 12.

When the shoe is used, the sole and the vamp are integrally formed in an injection mode, so that the overall stability of the shoe body is enhanced, the limiting wall 21 in the placement cavity 23 and the surface of the surrounding part 22 are provided with a plurality of friction salient points 25, and the friction salient points 25 increase friction force to play a role in skid resistance.

As shown in fig. 3, a production process of EVA rubber shoes includes the following steps:

s1, mixing and molding materials: adding EVA raw materials, mixing in an internal mixer, adding color filler, cross-linking agent, foaming agent and foaming auxiliary agent, mixing for 20-25min, uniformly mixing, and discharging to obtain the EVA rubber composite material.

S2, EVA rubber granulation: will treat the automatic feed machine that sends into of EVA rubber combined material of granulation through automatic feeding machine in, the feeder is in sending into the plastic granulator host computer with the material is even orderly, the plastic granulator host computer realizes granulation extrusion brace process, the plastic strip cooling of extruding the die head of stainless steel cooling trough in the plastic granulator host computer, hobbing cutter formula pelleter passes through frequency conversion control in the host computer, can control the size of EVA rubber combined material particle, inhale the storage silo with the particle through the draught fan, for use.

S3, molding and shaping by an injection molding machine: and pouring the granulated EVA rubber composite material into a material preparation barrel of an injection machine for injection process production, wherein the injection gun temperature of the injection machine is 94-100 ℃, the mold temperature of the injection machine is 170-190 ℃, and the vulcanization time is 500-1200s, and cooling and demolding are carried out to obtain the shoe product.

S4, passing through an incubator: the shoe to be molded is placed into a thermostat after being demoulded, and the time for placing the thermostat is as follows: 15-40min, and the temperature of the constant temperature box is 55-95 ℃.

S5, trimming: the method comprises the following steps of trimming the surface of the shoe, adopting liquid nitrogen to enable burrs of the product to become brittle at a low temperature, using a bullet to beat the burrs, and quickly removing the burrs.

S6, quality inspection: the shoe is clean in surface, free of flying, burrs and the like, free of impurities, obvious scratches, bubble-shaped bulges, natural in surface lines, free of visible particles on the surface, free of refraction defects, gate marks, flow marks and the like, after a hot air aging test for 72 hours, the hardness of the shoe is changed by not more than +/-15% IRHD under a 700C temperature test, the tensile strength change rate is not more than +/-30%, the tensile elongation change rate is not more than-50%, all or part of the sample is in a long strip shape according to the specific shape of the sample, the shoe is elongated by 10%, and the shoe is placed in the north-south or east-west direction for three months under the deformation condition, no crack is generated through visual observation during the period, no crack is generated after a low-temperature test, no crack is generated when the sample is knocked, and no crack phenomenon is generated after a high-temperature test.

S7, packaging and shipping: and packaging the products after the product inspection, and then discharging the products after loading.

In the specific implementation, the filler in step S1 is Talcum, the crosslinking agent is DCP, the foaming agent is AC, and the foaming aid is ZnO.

In the specific implementation, the proportion of the EVA raw material, the filler Talcum, the crosslinking agent DCP, the foaming agent AC and the foaming auxiliary agent AC is 20: 2: 2: 1: 1.

in the specific implementation, the temperature of the internal mixer in the step S1 is 50-60 ℃.

In specific implementation, the particle size of the granules granulated in the step S2 is 2-4 mm.

In the specific implementation, the molding time of the injection molding machine in the step S3 is 8-20 min.

Example 1

The manufacturing process of the EVA rubber material shoes comprises the following steps: adding an EVA raw material, mixing in an internal mixer, adding a color filler, a cross-linking agent, a foaming agent and a foaming auxiliary agent, mixing, wherein the filler is Talcum, the cross-linking agent is DCP, the foaming agent is AC, the foaming auxiliary agent is ZnO, and the proportion of the EVA raw material, the filler, the Talcum, the cross-linking agent DCP, the foaming agent AC and the foaming auxiliary agent AC is 20: 2: 2: 1: 1, the temperature of an internal mixer is 50 ℃, the mixing time is 20min, and the EVA rubber composite material is obtained after uniform mixing and discharging.

The color filler can be any color filler of any color.

The EVA rubber composite material to be granulated is automatically fed into a feeding machine through an automatic feeding machine, the feeding machine uniformly and orderly feeds the material into a main machine of a plastic granulator, the main machine of the plastic granulator realizes a granulating, extruding and strip-drawing process, a stainless steel cooling water tank in the main machine of the plastic granulator cools plastic strips extruded by a die head, a rotary cutter type granulator in the main machine can control the size of particles of the EVA rubber composite material through variable frequency control, the particle size of the granules is 2mm, a draught fan sucks the particles into a storage bin, the granulated EVA rubber composite material is poured into a material preparation barrel of an injection machine for injection process production, the injection machine has an injection gun temperature of 94 ℃, the injection machine has a die temperature of 170 ℃, the injection machine has a die pressing time of 8min and a vulcanization time of 500s, and shoe products are obtained after cooling and demoulding;

the shoe to be molded is placed into a thermostat after being demoulded, and the time for placing the thermostat is as follows: 15min, the temperature of the constant temperature box is 55 ℃; trimming the shoe product, adopting liquid nitrogen to make burrs of the product become brittle at low temperature, and striking the burrs by using a bullet to quickly remove the burrs; the product is subjected to quality inspection, the surface of the product is clean and tidy, no flying occurs, burrs and the like exist, no impurities exist, no obvious scratch or bubble-shaped protrusion exists, the surface lines of the product are natural, no visible particles exist on the surface, no refraction defect, no pouring gate mark, no flow mark and the like exist, after the product is subjected to a hot air aging test for 72 hours at 700 ℃, the hardness change of the product is not more than +/-15% IRHD, the tensile strength change rate is not more than +/-30%, the tensile elongation change is not more than-50%, no crack appears according to the specific shape of a sample, after the low-temperature test, the sample is not broken when being knocked, after the high-temperature test, the sample is good in elasticity, no crack appears when being bent, the product after the quality inspection is packaged, and then the product is shipped after being loaded.

Example 2

The manufacturing process of the EVA rubber material shoes comprises the following steps: adding an EVA raw material, mixing in an internal mixer, adding a color filler, a cross-linking agent, a foaming agent and a foaming auxiliary agent, mixing, wherein the filler is Talcum, the cross-linking agent is DCP, the foaming agent is AC, the foaming auxiliary agent is ZnO, and the proportion of the EVA raw material, the filler, the Talcum, the cross-linking agent DCP, the foaming agent AC and the foaming auxiliary agent AC is 20: 2: 2: 1: 1, the temperature of an internal mixer is 55 ℃, the mixing time is 24min, and the EVA rubber composite material is obtained after uniform mixing and discharging.

The EVA rubber composite material to be granulated is automatically fed into a feeding machine through an automatic feeding machine, the feeding machine uniformly and orderly feeds the material into a main machine of a plastic granulator, the main machine of the plastic granulator realizes a granulating, extruding and strip-drawing process, a stainless steel cooling water tank in the main machine of the plastic granulator cools plastic strips extruded by a die head, a rotary cutter type granulator in the main machine can control the size of particles of the EVA rubber composite material through variable frequency control, the particle size of the granules is 3mm, the particles are sucked into a storage bin through a draught fan, the granulated EVA rubber composite material is poured into a material preparation barrel of an injection machine for injection process production, the injection machine has the injection gun temperature of 96 ℃, the injection machine has the mold temperature of 180 ℃, the injection machine has the mold pressing time of 14min and the vulcanization time of 650s, and the shoes are obtained after cooling and demolding.

The shoe to be molded is placed into a thermostat after being demoulded, and the time for placing the thermostat is as follows: 22min, the temperature of the constant temperature box is 65 ℃; trimming the shoe product, adopting liquid nitrogen to enable burrs of the product to become brittle at low temperature, and using a bullet to beat the burrs so as to quickly remove the burrs; the product is subjected to quality inspection, the surface of the product is clean and tidy, no flying, burr and the like exist, no impurities exist, no obvious scratch or bubble-shaped bulge exists, the surface lines of the product are natural, no visible particles exist on the surface, no refraction defect, no sprue mark, no flow mark and the like exist, after the product is subjected to a hot air aging test for 72 hours at 700 ℃, the hardness change of the product is not more than +/-15 percent IRHD, the tensile strength change rate is not more than +/-30 percent, the tensile elongation change rate is not more than-50 percent, all or a part of the sample is in a long strip shape according to the specific shape of the sample, the sample is elongated by 10 percent, the product is placed in a south-north or east-west direction for three months under the deformation condition, no crack appears through visual observation during the period, after the low-temperature test, no crack phenomenon appears when the sample is knocked, after the high-temperature test, the sample has good elasticity, no bending phenomenon exists, and the product after the quality inspection is packaged, then the goods are delivered after loading.

Example 3

The process of the EVA rubber material shoes comprises the following steps: adding an EVA raw material, mixing in an internal mixer, adding a color filler, a cross-linking agent, a foaming agent and a foaming auxiliary agent, mixing, wherein the filler is Talcum, the cross-linking agent is DCP, the foaming agent is AC, the foaming auxiliary agent is ZnO, and the proportion of the EVA raw material, the filler, the Talcum, the cross-linking agent DCP, the foaming agent AC and the foaming auxiliary agent AC is 20: 2: 2: 1: 1, the temperature of an internal mixer is 60 ℃, the mixing time is 25min, and the EVA rubber composite material is obtained after uniform mixing and discharging.

The EVA rubber composite material to be granulated is automatically fed into a feeding machine through an automatic feeding machine, the feeding machine uniformly and orderly feeds the material into a plastic granulator main machine, the plastic granulator main machine realizes a granulating, extruding and strip-drawing process, a stainless steel cooling water tank in the plastic granulator main machine cools plastic strips extruded by a die head, a rotary cutter type granulator in the main machine can control the size of EVA rubber composite material particles, the particle size of granules is 4mm, a draught fan sucks the particles into a storage bin, the granulated EVA rubber composite material is poured into a material preparation barrel of an injection machine for injection process production, the injection machine has an injection gun temperature of 100 ℃, the injection machine has a die temperature of 190 ℃, the injection machine has a die pressing time of 20min and a vulcanization time of 1200s, and the shoes are obtained after cooling and demoulding.

Putting the formed shoes into a thermostat after demolding, wherein the time for putting the thermostat is as follows: 40min, the temperature of the constant temperature box is 95 ℃; trimming the shoe product, adopting liquid nitrogen to enable burrs of the product to become brittle at low temperature, and using a bullet to beat the burrs so as to quickly remove the burrs; the product is subjected to quality inspection, the surface of the product is clean and tidy, no flying, burr and the like exist, no impurities exist, no obvious scratch or bubble-shaped bulge exists, the surface lines of the product are natural, no visible particles exist on the surface, no refraction defect, no sprue mark, no flow mark and the like exist, after the product is subjected to a hot air aging test for 72 hours at 700 ℃, the hardness change of the product is not more than +/-15 percent IRHD, the tensile strength change rate is not more than +/-30 percent, the tensile elongation change rate is not more than-50 percent, all or a part of the sample is in a long strip shape according to the specific shape of the sample, the sample is elongated by 10 percent, the product is placed in a south-north or east-west direction for three months under the deformation condition, no crack appears through visual observation during the period, after the low-temperature test, no crack phenomenon appears when the sample is knocked, after the high-temperature test, the sample has good elasticity, no bending phenomenon exists, and the product after the quality inspection is packaged, then the goods are delivered after loading.

When the shoe is used, the shoe is integrally injection-molded, the shoe is made of EVA rubber materials, the EVA rubber materials have a good buffering effect, the anti-collision performance of the shoe body is improved, and the foot of a human body can be better protected.