CN113386378A - Integrated forming process of composite sole - Google Patents
Integrated forming process of composite sole Download PDFInfo
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- CN113386378A CN113386378A CN202110716798.XA CN202110716798A CN113386378A CN 113386378 A CN113386378 A CN 113386378A CN 202110716798 A CN202110716798 A CN 202110716798A CN 113386378 A CN113386378 A CN 113386378A
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- film
- tpu
- molding process
- sole
- composite
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/14—Multilayered parts
- B29D35/142—Soles
Abstract
The invention discloses an integrated molding process of a composite sole, which comprises the following steps: the method comprises the following steps: after cleaning the bottom plate, brushing a treating agent on the bottom plate, drying, brushing glue, and heating to completely melt the glue; step two: heating a mould corresponding to the bottom plate to 70-80 ℃; step three: placing the negative film processed in the step one on a heated die bottom die to enable the negative film to be matched with the die bottom die, and placing a TPU film (thermoplastic polyurethane film) above the negative film; step four: after the TPU film is placed flatly, the hand buckle is fastened and fixed, the bottom surface of the TPU film is completely attached to the bottom sheet and the periphery of the inner mold core is vacuumized. This integrated into one piece technology of compound sole adopts rubber or TPU preparation outsole, uses polyurethane preparation insole, can satisfy the quality west of sole and can require, and simultaneously integrated into one piece can guarantee production efficiency, reduces simultaneously to use chemical treatment agent, environmental protection more.
Description
Technical Field
The invention relates to the technical field of sole processing, in particular to an integrated forming process of a composite sole.
Background
The sole materials that can buy on the current market are of a wide variety, and the style is various, mainly includes rubber, PU (polyurethane for short), Thermoplastic Polyurethane (TPU) etc. and every sole material all has different advantages and disadvantages, and wherein, the PU sole has density low, and elasticity is good, and the compression ratio is good, is difficult to warp, and size stability is good and other material can't the substitutional advantage, but the antiskid nature is not good. The rubber sole has the advantages of good wear resistance, good skid resistance, good hardness and bending property, and water resistance, but has the defects of heavier weight, poor air permeability and hygroscopicity and the like. Generally, the market demands for shoe soles are usually a combination of advantages, and therefore, the combination of shoe soles, such as PU and rubber or TPU, becomes one of the better solutions, i.e. rubber or TPU is used for making the outsole, and polyurethane is used for making the midsole;
the reference publication number is CN105212425A, which discloses a high-heeled shoe and a heel and sole assembly thereof, wherein the heel and sole assembly of the high-heeled shoe comprises a middle bottom plate, and a damping sheet is arranged on the upper side of the heel part of the middle bottom plate; and the heel is fixed on the lower side of the heel part of the middle bottom plate and is of an integral structure with the middle bottom plate. In the heel and sole assembly of the high-heeled shoe, the damping sheet is arranged on the upper side of the heel part of the middle bottom plate, the heel part of the middle bottom plate is a main supporting part of the middle bottom plate, and the damping sheet is arranged on the heel part of the middle bottom plate, so that the vibration of the high-heeled shoe can be greatly reduced, and the comfort level of people wearing the high-heeled shoe is improved. In addition, the heel and the middle base plate are of an integrated structure, namely the heel and the middle base plate are processed and formed in an integrated mode, the heel and the middle base plate do not need to be connected through screws, the structure is simple, the process is simplified, and time and labor are saved.
Meanwhile, the Chinese patent application with the comparative publication number of CN106313409A provides a PU sole film-covering forming process, which comprises the steps of firstly flatly placing film paper on a bottom die of a die, pressing a middle frame to cover the bottom die, and fastening a hand buckle for fixing; then, vacuumizing the inner cavity of the mold to enable the film paper to be completely attached to the bottom mold; heating the mould to make the temperature of the mould reach 60-70 ℃; and finally, pouring polyurethane foaming stock solution into the mold cavity to foam and form the polyurethane foaming stock solution in the mold cavity, and cooling and demolding to obtain the film-coated PU foamed sole. Can effectively solve the problems of air bubbles, material shortage, foaming lines, pocks and capillary holes generated in the production process of the PU foamed sole, and increase the brightness effect of the product.
The conventional production process of the combined sole generally comprises the steps of firstly making the outsole and the polyurethane midsole, and then bonding the outsole and the polyurethane midsole by using an adhesive, wherein in the process, the polyurethane needs to be heated to generate heat to be bonded with a bottom sheet, if the heating temperature is too high, the polyurethane is easily burnt, and if the temperature is too low, the outsole and the polyurethane material are easily separated, so that the bonding effect of the formed sole is influenced, the sole can be repaired only by secondary processing such as manual repair and paint spraying, more manpower and material resources are consumed, the production cost is increased, and the production delivery period is prolonged. The excessive use of glue also causes environmental pollution. In addition, the process of manufacturing the midsole by using polyurethane is generated by foaming through chemical reaction, so that the problems of defects such as bubbles, shortage of materials and the like and the remained foaming lines in the product are difficult to solve.
Therefore, we propose an integral forming process of composite shoe sole to solve the above mentioned problems.
Disclosure of Invention
The invention aims to provide an integrated forming process of a composite sole, which aims to solve the problems that the outsole and a polyurethane midsole are generally prepared and then are bonded by using an adhesive in the production process of the conventional combined sole proposed by the background technology, the polyurethane needs to generate heat through heating and is bonded with a bottom sheet, if the heating temperature is too high, the polyurethane is easy to be burnt, and if the temperature is too low, the outsole and the polyurethane material are easy to separate, so that the bonding effect of the sole forming is influenced, the outsole and the polyurethane material can be repaired only through secondary processing such as manual repair, paint spraying and the like, more manpower and material resources are consumed, the production cost is increased, and the production period is prolonged. The excessive use of glue also causes environmental pollution. In addition, the process of manufacturing the midsole by using polyurethane is generated by foaming through chemical reaction, so that the problems of defects such as bubbles, shortage of materials and the like and the remained foaming lines in the product are difficult to solve.
In order to achieve the purpose, the invention provides the following technical scheme: an integrated molding process of a composite shoe sole, the molding process comprising the steps of:
the method comprises the following steps: after cleaning the bottom plate, brushing a treating agent on the bottom plate, drying, brushing glue, and heating to completely melt the glue;
step two: heating a mould corresponding to the bottom plate to 70-80 ℃;
step three: placing the negative film processed in the step one on a heated die bottom die to enable the negative film to be matched with the die bottom die, and placing a TPU film (thermoplastic polyurethane film) above the negative film;
step four: after the TPU film is placed flatly, the hand buckle is fastened and fixed, and the bottom surface of the TPU film is completely attached to the bottom sheet and the periphery of the inner mold through vacuumizing;
step five: pouring the well-regulated foaming stock solution of the first insole into the mold cavity, foaming and shaping, further bonding the bottom sheet and the TPU film through heat and pressure generated during foaming, and cooling to obtain the first insole;
step six: replacing the mold with the bottom plate and the first insole, filling the well-regulated foaming stock solution of the second insole into the mold cavity from the side surface of the mold, foaming and shaping, further bonding the bottom mold through heat and pressure generated during foaming, cooling and demolding to obtain the composite sole lining;
step seven: and covering the TPU film on the outer edges of the first midsole and the second midsole in a hot laminating manner, completely wrapping the lining of the composite sole, and finally manufacturing the composite sole.
Further, the step one specifically includes the following steps:
A. cleaning the negative film by using a cleaning agent;
B. uniformly brushing the prepared treating agent on the negative, and drying at 25-35 ℃;
C. uniformly stirring the mixed glue and 2% of curing agent, brushing the mixture on the dried bottom plate, and drying the bottom plate again at the temperature of between 30 and 50 ℃;
D. and C, uniformly stirring the mixed glue and 3% of curing agent, brushing the mixture on the negative plate dried in the step C, and heating the mixture to 35-65 ℃ to completely melt the glue on the negative plate.
Further, the bottom sheet is a rubber bottom or a TPU bottom, and the treating agent is prepared by mixing rubber treating water or TPU treating water and 3% of rubber treating agent B powder and stirring until the B powder is completely melted
Further, the TPU film is formed by combining a right edge film, a middle film and a left edge film, the middle film is positioned in the middle of the right edge film and the left edge film, and the bottom surface of the middle film is attached to the top surface of the bottom sheet.
Further, the thickness of the TPU thin film is 0.03-0.04 mm.
Further, the vacuum degree in the vacuum pumping in the fourth step is maintained in the range of 0.15-0.25 mbar.
Further, the first middle sole is light and elastic PU (polyurethane) with the density of 0.23 g/cubic centimeter; the second midsole is PU (polyurethane) with stable quality and 0.35 g/cubic centimeter of density.
Further, the rubber treatment water is a mixed solution of butanone and ethyl acetate.
Further, the TPU treatment water consists of butanone, toluene and cyclohexanone.
Compared with the prior art, the invention has the beneficial effects that: according to the integrated forming process of the composite sole, the rubber or TPU is adopted to manufacture the outsole, the polyurethane is used to manufacture the midsole, the requirement of the sole on the quality and the western energy can be met, meanwhile, the integrated forming is realized, the production efficiency can be ensured, the use of chemical treatment agents is reduced, and the environment is protected;
1. the stability of the product is improved by the integral molding in the mold, and a composite material is provided according to the requirements of different parts of the sole;
2. the first midsole is covered by the TPU film, so that the smoothness and the attractiveness of the surface of the composite sole are improved; 3. the labor is saved, the use of chemical treatment agents is reduced, and the environment is protected.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a structural diagram of a first midsole of the present invention in a foamed state;
FIG. 3 is a structural diagram illustrating a foamed state of the second midsole of the present invention.
In the figure: 1. a negative film; 2. a right edge film; 3. an intermediate film; 4. a left edge film; 5. a first midsole; 6. a second midsole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides the following technical solutions: an integrated forming process of a composite sole is characterized in that: the molding process comprises the following steps:
the method comprises the following steps: after the bottom sheet 1 is cleaned, the bottom sheet 1 is a rubber bottom or a TPU bottom, the bottom sheet 1 is coated with a treating agent prepared by brushing rubber treating water or TPU treating water and 3% of rubber treating agent B powder and stirring until the B powder is completely melted, the treating agent is dried and then coated with glue, and the glue is heated to be completely melted, and the method specifically comprises the following steps:
A. cleaning the negative film 1 by using a cleaning agent;
B. uniformly brushing the prepared treating agent on the bottom sheet 1, and drying at 25-35 ℃;
C. uniformly stirring the mixed glue and 2% of curing agent, brushing the mixture on the dried bottom sheet 1, and drying the mixture again at the temperature of between 30 and 50 ℃;
D. c, uniformly stirring and brushing the mixed glue and 3% of curing agent on the bottom sheet 1 dried in the step C, and heating to 35-65 ℃ to completely melt the glue on the bottom sheet 1;
step two: heating a mould corresponding to the bottom sheet 1 to 70-80 ℃;
step three: placing the bottom sheet 1 processed in the step one on a heated die bottom die, enabling the bottom sheet 1 to be matched with the die bottom die, placing a TPU (thermoplastic polyurethane) film formed by combining a right edge film 2, a middle film 3 and a left edge film 4 above the bottom sheet 1, and attaching the bottom surface of the middle film 3 to the top surface of the bottom sheet 1;
step four: after the TPU film is placed flatly, the hand buckle is fastened and fixed, the bottom surface of the TPU film is completely attached to the film 1 and the periphery of the inner mold through vacuumizing, so that the vacuum degree is maintained within the range of 0.15-0.25 mbar;
step five: pouring the prepared foaming stock solution of the first midsole 5 into a mold cavity, foaming and shaping, further bonding the bottom sheet 1 and the TPU film through heat and pressure generated during foaming, and cooling to obtain the first midsole 5;
step six: replacing a mould with a bottom plate 1 and a first insole 5, filling the well-regulated foaming stock solution of a second insole 6 into the mould cavity from the side surface of the mould, foaming and shaping, further bonding a bottom mould through heat and pressure generated during foaming, cooling and demoulding to obtain the composite sole lining;
step seven: and covering the TPU film on the outer edges of the first midsole 5 and the second midsole 6 in a hot laminating mode, completely wrapping the composite sole liner, and finally manufacturing the composite sole.
Further, the thickness of the TPU thin film is 0.03-0.04 mm.
Further, the first midsole 5 is PU (polyurethane) having a light weight and elasticity with a density of 0.23 g/cc; the second midsole 6 is a mass-stable PU (polyurethane) having a density of 0.35 g/cc.
Further, the rubber treatment water is a mixed solution of butanone and ethyl acetate.
Furthermore, the TPU treatment water consists of butanone, toluene and cyclohexanone.
Example (b):
firstly, selecting a bottom sheet 1 made of TPU bottom, cleaning the bottom sheet 1 by using a cleaning agent for the bottom sheet 1, mixing rubber treatment water formed by combining butanone and ethyl acetate with 3% of rubber treatment agent B powder, and stirring until the B powder is completely melted to prepare the treatment agent;
uniformly brushing the prepared treating agent on the bottom sheet 1, drying at 30 ℃, uniformly stirring and brushing the prepared glue and 2% of curing agent on the dried bottom sheet 1, drying again at 42 ℃, uniformly stirring and brushing the prepared glue and 3% of curing agent on the bottom sheet 1 dried in the step C, and heating to 60 ℃ to completely melt the glue on the bottom sheet 1;
as shown in fig. 2, a mold corresponding to a film 1 is heated to 80 ℃, the processed film 1 is placed on a heated mold bottom mold, so that the film 1 is matched with the mold bottom mold, and a TPU film formed by combining a right edge film 2, a middle film 3 and a left edge film 4 is placed above the film 1, so that the bottom surface of the middle film 3 is attached to the top surface of the film 1;
after the TPU film is placed flatly, the hand buckle is fastened and fixed, so that the upper die and the lower die of the die are fixed, the bottom surface of the film is completely attached to the bottom sheet 1 and the periphery of the inner core of the die by vacuumizing, and the vacuum degree is maintained within the range of 0.15-0.25 mbar;
pouring a prepared foaming stock solution of a first insole 5 made of PU with light weight and elasticity and the density of 0.23 g/cubic centimeter into a mold cavity, foaming and shaping, further bonding the bottom sheet 1 and the TPU film through heat and pressure generated during foaming, and cooling to obtain the first insole 5;
replacing a mould with a bottom sheet 1 and a first insole 5, filling a well-regulated foaming stock solution with stable quality and a second insole 6 made of PU with the density of 0.35 g/cubic centimeter into the mould cavity from the side surface of the mould, foaming and shaping, further bonding a bottom mould through heat and pressure generated during foaming, cooling and demoulding to obtain the composite sole lining;
and covering the right edge film 2 and the left edge film 4 at the edge of the TPU film on the outer edges of the first midsole 5 and the second midsole 6 in a hot laminating manner, completely wrapping the lining of the composite sole, and finally manufacturing the composite sole.
Those not described in detail in this specification are within the skill of the art. The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. An integrated forming process of a composite sole is characterized in that: the molding process comprises the following steps:
the method comprises the following steps: after the bottom sheet (1) is cleaned, coating a treating agent on the bottom sheet (1), drying, coating glue, and heating to completely melt the glue;
step two: heating a mould corresponding to the bottom sheet (1) to 70-80 ℃;
step three: placing the negative film (1) processed in the step one on a heated die bottom die, enabling the negative film (1) to be matched with the die bottom die, and placing a TPU film (thermoplastic polyurethane film) above the negative film (1);
step four: after the TPU film is placed flatly, the hand buckle is fastened for fixing, and the bottom surface of the TPU film is completely attached to the bottom sheet (1) and the periphery of the inner core of the mold by vacuumizing;
step five: pouring the prepared foaming stock solution of the first insole (5) into the mold cavity, foaming and shaping, further bonding the bottom sheet (1) and the TPU film through heat and pressure generated during foaming, and cooling to obtain the first insole (5);
step six: replacing a mould with a bottom plate (1) and a first insole (5), filling the well-regulated foaming stock solution of a second insole (6) into the mould cavity from the side surface of the mould, foaming and shaping, further bonding the bottom plate by heat and pressure generated during foaming, cooling and demoulding to obtain the composite sole lining;
step seven: and covering the TPU film on the outer edges of the first midsole (5) and the second midsole (6) in a hot laminating mode, completely wrapping the composite sole liner, and finally manufacturing the composite sole.
2. The integrated molding process of a composite shoe sole according to claim 1, wherein: the first step specifically comprises the following steps:
A. washing the negative (1) with a detergent;
B. uniformly brushing the prepared treating agent on the negative (1), and drying at 25-35 ℃;
C. uniformly stirring the mixed glue and 2% of curing agent, brushing the mixed glue and 2% of curing agent on the dried bottom sheet (1), and drying again at the temperature of 30-50 ℃;
D. and C, uniformly stirring the mixed glue and 3% of curing agent, brushing the mixture on the bottom plate (1) dried in the step C, and heating the mixture to 35-65 ℃ to completely melt the glue on the bottom plate (1).
3. The integrated molding process of a composite shoe sole according to claim 2, wherein: the bottom sheet (1) is a rubber bottom or a TPU bottom, and the treating agent is prepared by mixing rubber treating water or TPU treating water and 3% of rubber treating agent B powder and stirring until the B powder is completely melted.
4. The integrated molding process of a composite shoe sole according to claim 1, wherein: the TPU film is formed by combining a right edge film (2), a middle film (3) and a left edge film (4), the middle film (3) is positioned in the middle of the right edge film (2) and the left edge film (4), and the bottom surface of the middle film (3) is attached to the top surface of the bottom sheet (1).
5. The integrated molding process of a composite shoe sole according to claim 4, wherein: the thickness of the TPU film is 0.03-0.04 mm.
6. The integrated molding process of a composite shoe sole according to claim 1, wherein: the vacuum degree in the vacuum pumping in the fourth step is maintained in the range of 0.15-0.25 mbar.
7. The integrated molding process of a composite shoe sole according to claim 1, wherein: the first middle sole (5) is light and elastic PU (polyurethane) with the density of 0.23 g/cubic centimeter; the second middle sole (6) is PU (polyurethane) with stable quality and density of 0.35 g/cubic centimeter.
8. The integrated molding process of a composite shoe sole according to claim 3, wherein: the rubber treatment water is a mixed solution formed by combining butanone and ethyl acetate.
9. The integrated molding process of a composite shoe sole according to claim 3, wherein: the TPU treatment water consists of butanone, toluene and cyclohexanone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110716798.XA CN113386378A (en) | 2021-06-28 | 2021-06-28 | Integrated forming process of composite sole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110716798.XA CN113386378A (en) | 2021-06-28 | 2021-06-28 | Integrated forming process of composite sole |
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| CN113386378A true CN113386378A (en) | 2021-09-14 |
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| CN202110716798.XA Pending CN113386378A (en) | 2021-06-28 | 2021-06-28 | Integrated forming process of composite sole |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523703A (en) * | 2022-03-14 | 2022-05-24 | 泉州耐保鞋业有限公司 | Method for manufacturing double-color double-density sole |
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| CN109938444A (en) * | 2017-12-20 | 2019-06-28 | 孙兴娥 | Functional shoe |
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2021
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| CN104552674A (en) * | 2013-12-10 | 2015-04-29 | 吴文杰 | Shoe sole molding method |
| 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 |
| CN107698828A (en) * | 2017-10-08 | 2018-02-16 | 界首市旭升塑胶制品有限公司 | A kind of preparation method of the hard sole of wear-resisting height |
| CN109938444A (en) * | 2017-12-20 | 2019-06-28 | 孙兴娥 | Functional shoe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114523703A (en) * | 2022-03-14 | 2022-05-24 | 泉州耐保鞋业有限公司 | Method for manufacturing double-color double-density sole |
| CN114523703B (en) * | 2022-03-14 | 2023-09-22 | 泉州耐保鞋业有限公司 | Manufacturing method of double-color double-density sole |
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