CN112625320A - Preparation method of semi-finished blank for shoe outsole and forming method of shoe outsole - Google Patents

Preparation method of semi-finished blank for shoe outsole and forming method of shoe outsole Download PDF

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Publication number
CN112625320A
CN112625320A CN202011580817.2A CN202011580817A CN112625320A CN 112625320 A CN112625320 A CN 112625320A CN 202011580817 A CN202011580817 A CN 202011580817A CN 112625320 A CN112625320 A CN 112625320A
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China
Prior art keywords
phr
semi
die holder
lower die
mixing
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CN202011580817.2A
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Chinese (zh)
Inventor
施剑军
蒋益道
郑诏阳
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GUANGZHOU ZENGWEI RUBBER CO Ltd
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GUANGZHOU ZENGWEI RUBBER CO Ltd
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Priority to CN202011580817.2A priority Critical patent/CN112625320A/en
Publication of CN112625320A publication Critical patent/CN112625320A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/02—Copolymers with acrylonitrile
    • 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
    • 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
    • B29D35/0054—Producing footwear by compression moulding, vulcanising or the like; Apparatus therefor
    • B29D35/0063—Moulds
    • 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
    • B29D35/122—Soles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C08L9/06—Copolymers with styrene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/20—Oxides; Hydroxides
    • C08K3/22—Oxides; Hydroxides of metals
    • C08K2003/2296—Oxides; Hydroxides of metals of zinc
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

The invention relates to a method for forming a shoe outsole and a method for preparing a semi-finished blank used in the method, wherein a forming die is provided with a lower die holder 10, an upper die holder 30 which can be covered on the lower die holder 10 and a middle plate element 20; placing a semi-finished blank 60 on a lower die 10 and covering a lower die cavity 101, then placing a spacer 40 on the semi-finished blank 60, placing a buffer sheet 50 on the spacer 40, closing a middle plate 20 on the buffer sheet 50, opening the die after the die is closed for the first hot pressing, taking out the middle plate 20, the buffer sheet 50 and the spacer 40, and cleaning the residual semi-finished blank; and (3) placing the flaky basic material 70 on the lower die holder 10, closing the upper die holder 30 again, and performing hot press molding to obtain the shoe outsole. In the forming process, the buffer sheet 50 and the spacing sheet 40 are arranged between the lower die holder 10 and the middle plate member 20, so that direct collision of the lower die holder 10 and the middle plate member 20 is effectively reduced, the service life of the die is prolonged, and the defective product rate caused by the color overflowing problem is effectively reduced.

Description

Preparation method of semi-finished blank for shoe outsole and forming method of shoe outsole
Technical Field
The invention relates to a method for forming an outsole of a shoe, and belongs to the technical field of shoes.
Background
The shoes are the first level of the contact between the feet and the ground, are necessary for every person in daily life, and the quality of a pair of shoes depends on the design of the soles. The sole generally includes an outsole and a midsole. The outsole is the bottommost part of the shoe, and the midsole is the place where the foot is stepped on, namely the contact position of the sole after the shoe is put in.
CN211542118U discloses a mold capable of producing shoe soles, which belongs to the prior art, and as shown in fig. 1, comprises a lower mold 1, a middle mold 2 and an upper mold 3, wherein the lower mold 1, the middle mold 2 and the upper mold 3 are all made of alloy steel materials. The following problems arise in use: (1) because the lower die 1, the middle die 2 and the upper die 3 are all made of steel, the middle die 2 and the lower die 1 are directly made of steel in the using process, the loss of the die is large, and the service life of the die is shortened; (2) in the process of manufacturing the outsole, when the outsole is provided with a plurality of colors and the color separation positions are dense, the manufactured outsole has a color overflow phenomenon due to the deformation caused by the repeated use of the middle mold and the fit of the middle mold and the lower mold in use. When the color requirement for the outsole is high, the defective rate of manufacturing the outsole is high due to the color bleeding problem, and the defective rate even exceeds 50%.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for forming an outsole, which is characterized by comprising the following steps:
the method comprises the following steps: preparing a forming die, wherein the forming die is provided with a lower die base and an upper die base which can be covered on the lower die base, the lower die base is provided with a top surface facing the upper die base and a lower die cavity concavely arranged from the top surface, the upper die base is provided with a bottom surface facing the lower die base and an upper die cavity concavely arranged from the bottom surface, the forming die also comprises a middle plate piece, the middle plate piece is provided with a first side surface opposite to the lower die base and another second side surface opposite to the first side surface, and the second side surface is opposite to the upper die base;
preparing an isolating sheet and a buffer sheet, wherein the melting point of the isolating sheet is greater than 180 ℃, the hardness of the buffer sheet is 80-100 HA (Shore hardness), and the melting point is greater than 180 ℃;
step three: preparing a semi-finished blank; the blank is made of rubber material;
step four: heating the mold to 140-170 ℃, then placing the semi-finished blank on a lower mold and covering a lower mold cavity, then placing a spacer on the semi-finished blank, wherein the spacer covers the semi-finished blank, and then placing a buffer sheet on the spacer, wherein the buffer sheet covers the lower mold cavity; closing the middle plate and the upper die holder on the buffer sheet to form a closed die; wherein the spacing sheet and the buffer sheet are positioned between the middle plate and the lower die;
step five: the closed die is pressed at 140-150 kg/cm2Hot pressing for 10-20 seconds at 150-170 ℃;
step six: opening the die, taking out the middle plate, the buffer sheet and the spacing sheet, and cleaning residual semi-finished blanks except the semi-finished blanks which correspond to the lower die cavities and are pressed in;
step seven: at the lower diePlacing a sheet-shaped basic material on the base, covering the lower die cavity with the basic material, closing the upper die base, and performing hot press molding for 7-12 minutes under the pressure of a press machine of 140-150 kg/cm2Left and right; the hot pressing temperature is 150-170 ℃;
step eight: and opening the mold again to prepare the shoe outsole.
In a preferred embodiment, the thickness of the spacer is 0.01 to 0.05mm, and the thickness of the buffer sheet (50) is 0.5 to 1 mm.
In yet another preferred embodiment, the separator is a PET fluorine film.
In still another preferred embodiment, the buffer sheet is prepared by the following process: (1) firstly, plasticating 30-40 wt% of nitrile rubber, 30-40 wt% of butadiene rubber and 20-30 wt% of styrene butadiene rubber to be used as main rubber; (2) adding the main rubber into an internal mixer, adding 70-80 PHR of white smoke, 3-5 PHR of zinc oxide, 1-5 PHR of zinc stearate, 4-7 PHR of a flame retardant and 3-7 PHR of mica powder, and mixing at 60-80 ℃ for 3-5 minutes; (3) adding 4-10 PHR of polyethylene glycol and 1-3 PHR of wax, mixing at 90-120 ℃, mixing for 2-5 minutes, and discharging; (4) adding 1-3 PHR of sulfur accelerator and 2-4 PHR of sulfur into the cooled rubber material, uniformly mixing on an open mill at 50-80 ℃ for 5-8 minutes, forming and cutting to obtain the buffer sheet.
In another preferred embodiment, the base material is natural rubber or synthetic rubber.
In a further preferred embodiment, the semi-finished blank is preferably prepared by a method,
(1) plasticating 25-30 wt% of butadiene rubber, 16-20 wt% of styrene-butadiene rubber, 20-25 wt% of solution-polymerized styrene-butadiene rubber and 30-38 wt% of isoprene rubber by an internal mixer and an open mill, wherein the internal mixing temperature is 120-140 ℃, and cooling to be used as main rubber;
(2) adding the main rubber into an internal mixer for mixing, wherein the mixing temperature is 60-80 ℃;
(3) adding 60-70 PHR of white smoke, 1-4 PHR of resin, 3.5-5 PHR of zinc oxide and 0.5-1 PHR of stearic acid, and mixing at 110-140 ℃;
(4) adding 1-3 PHR of an anti-aging agent, 2-4 PHR of an active agent, 3-6 PHR of a coupling agent, 0.5-1 PHR of wax and 4-7 PHR of polyethylene glycol, mixing at the temperature of 110-140 ℃, and discharging after mixing to serve as a base rubber for later use;
(5) adding 1-3 PHR of sulfur accelerator and 2-4 PHR of sulfur into the base rubber, uniformly mixing, and cooling to obtain a semi-finished blank, wherein the open mixing temperature is 50-80 ℃.
The invention has the following beneficial effects:
1. when the traditional process is used for production, the color separation operation using the traditional middle plate becomes very complicated and the product color overflow is very difficult to control because the color separation part at the bottom is small. After the forming method disclosed by the invention is used, the production operation difficulty is reduced, so that the time is saved, the productivity is improved, the operation requirement of operators is reduced, the product color overflowing condition can be well controlled, the quality is further improved, defective products are reduced, and the waste is reduced.
2. In the forming process, the buffer sheet is arranged between the lower die holder and the middle plate, so that direct metal collision of the lower die holder and the middle plate is effectively reduced, and the service life of the die is prolonged.
3. Compared with a general formula, the sheet semi-finished blank prepared by the optimized process has lower viscosity, and after hot pressing, the semi-finished blank is not easy to adhere to a spacer sheet contacted with the semi-finished blank, so that the defective rate caused by adhesion is reduced, meanwhile, the blank is easier to cut off, and the color separation effect is better.
Drawings
FIG. 1 is a schematic view of a prior art outsole mold;
FIG. 2 is a schematic view of an outsole preparation mold and material preparation in accordance with an embodiment of the invention;
FIG. 3 is a schematic view of a first closing of the outsole preparation mold according to an embodiment of the invention;
FIG. 4 is a schematic view of the second closing of the outsole forming mold according to the embodiment of the invention;
FIG. 5 is a schematic view of an outsole made according to an embodiment of the invention.
The reference numbers in the figures denote:
1-lower die, 2-middle die, 3-upper die, 10-lower die holder, 20-middle plate, 30-upper die holder, 301-upper die cavity, 101-lower die cavity, 40-spacing sheet, 50-buffer sheet, 60-semi-finished blank, 70-sheet foundation material, 6-lighter part of shoe outsole color and 7-darker part of shoe outsole color.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
A preferred embodiment of the method for forming an outsole of a shoe of the present invention comprises the steps of:
the method comprises the following steps: as shown in fig. 2, a forming mold is prepared, the forming mold has a lower mold base 10 and an upper mold base 30 capable of covering the lower mold base 10, the lower mold base 10 has a top surface facing the upper mold base 30 and a lower mold cavity 101 recessed from the top surface, the upper mold base 30 has a bottom surface facing the lower mold base 10 and an upper mold cavity 301 recessed from the bottom surface, and the lower mold cavity 101 and the upper mold cavity 301 can be designed to include various shapes and combinations of shapes according to requirements. The forming mold further includes a middle plate 20, wherein the middle plate 20 has a first side surface opposite to the top surface of the lower mold base 10 and a second side surface opposite to the first side surface, and the second side surface is opposite to the bottom surface of the upper mold base 30. The upper die holder 30, the middle plate 20 and the lower die holder 10 are made of metal, preferably steel or iron.
Step two, preparing a spacer 40 and a buffer sheet 50, wherein the thickness of the spacer 40 is preferably 0.01-0.05 mm, and the thickness of the buffer sheet is preferably 0.5-1 mm; the spacer 40 should have a melting point greater than 180 degrees celsius and is preferably a PET fluorine film. The buffer sheet 50 HAs a certain hardness, preferably 80-100 HA (Shore hardness), and the melting point is greater than 180 ℃.
The buffer sheet 50 is preferably prepared by the following process:
(1) firstly, plasticating butadiene-acrylonitrile rubber (30-40 wt%), butadiene rubber (30-40 wt%) and butadiene-styrene rubber (20-30 wt%) through an internal mixer and an open mill, carrying out internal mixing at the temperature of 120 ℃, and standing at normal temperature for more than 24 hours to be used as main rubber;
(2) adding the plasticated main rubber into an internal mixer, adding white smoke (70-80 PHR, wherein PHR represents the added parts per 100 parts (by mass) of rubber), zinc oxide (3-5 PHR), zinc stearate (1-5 PHR), a flame retardant (4-7 PHR) and mica powder (3-7 PHR), and mixing at the temperature of 60-80 ℃ for 3-5 minutes;
(3) adding polyethylene glycol (4-10 PHR) and wax (1-3 PHR), mixing at 90-120 ℃, discharging after mixing for 2-5 minutes, and cooling for 24 hours for later use;
(4) and adding a sulfur accelerator (1-3 PHR) and sulfur (2-4 PHR) into the cooled rubber material according to the weight, uniformly mixing on open mill at the open mill temperature of 50-80 ℃ for 5-8 minutes, then placing into a mold for molding and cutting to obtain the buffer sheet 50.
In order to be specially adapted to the preparation process of the shoe outsole, the preparation process of the buffer sheet is optimized after a plurality of experiments, the prepared buffer sheet 50 not only has proper hardness, can effectively play a role of buffering between the upper die base and the middle plate so as to reduce direct collision between the upper die base and the middle plate and effectively prolong the service life of the die, but also has relatively high melting point and is not deformed after bearing high temperature of 200 ℃ for 3 minutes.
Step three: a semi-finished blank 60 is prepared, the blank 60 being of a rubber material, preferably prepared using the following process:
(1) firstly, 25-30 wt% of butadiene rubber, 16-20 wt% of styrene-butadiene rubber, 20-25 wt% of solution polymerized styrene-butadiene rubber and 30-38 wt% of isoprene rubber are plasticated by an internal mixer and an open mill, the internal mixing temperature is 120 ℃, and the mixture is placed at normal temperature for 24 hours and used as a main rubber.
(2) And adding the plasticated main rubber into an internal mixer for mixing at the temperature of 60-80 ℃ for 3-5 minutes.
(3) Adding white smoke (60-70 PHR), resin (1-4 PHR), zinc oxide (3.5-5 PHR) and stearic acid (0.5-1 PHR), and mixing at 110-140 ℃ for 3-5 minutes;
(4) adding an anti-aging agent (1-3 PHR), an active agent (2-4 PHR), a coupling agent (3-6 PHR), wax (0.5-1 PHR) and polyethylene glycol (4-7 PHR), mixing at the mixing temperature of 110-140 ℃, discharging after mixing for 2-5 minutes, and cooling for 24 hours to serve as a mixing base rubber for later use;
(5) adding a sulfur accelerator (10-30 PHR) and sulfur (10-30 PHR) into the base rubber, uniformly mixing on an open mill at the open mill temperature of 50-80 ℃ for 1-2 minutes, and then taking out the base rubber and cooling to obtain a semi-finished blank 60 with the thickness of 0.5-1 mm.
The sheet-shaped semi-finished blank 60 prepared by the preferred process has a lower viscosity than a general formula, so that the semi-finished blank 60 is not easily adhered to the spacer 40 in contact with the semi-finished blank after hot pressing, the defective rate caused by adhesion is reduced, the blank is more easily cut, the cleaning process in the step six is easier, and the color separation effect is better. That is, the sheet-like semi-finished blank 60 prepared by the above-described preferred process is a result of special research for the forming method of the present invention.
Step four: heating the mold to over 150 ℃, preferably 150-160 ℃, then placing the semi-finished blank 60 on the lower mold 10 and covering the lower mold cavity 101, then placing the partition sheet 40 on the semi-finished blank 60, wherein the partition sheet 40 covers the semi-finished blank 60, then placing the buffer sheet 50 on the partition sheet 40, and the area of the buffer sheet 50 is not less than that of the lower mold cavity 101 and covers the lower mold cavity 101; sequentially closing the middle plate 20 and the upper die base 30 on the buffer sheet 50 to form a closed die; wherein the spacer 40 and the buffer sheet 50 are located between the middle plate member 20 and the lower mold 10 (as shown in fig. 3).
Step five: putting the closed die in a press under the pressure of 140-150 kg/cm2And hot pressing for 10-20 seconds at 150-170 ℃.
Step six: and opening the closed mold, sequentially taking out the middle plate 20, the buffer sheet 50 and the spacing sheet 40, pressing the semi-finished blank 60 at the position corresponding to the lower mold cavity 101 into the lower mold cavity 101, and cleaning the residual semi-finished blank 60 except the semi-finished blank which corresponds to the lower mold cavity 101 and is pressed into the lower mold cavity.
Step seven: a sheet of basic material 70, which can be a general basic material of a shoe outsole, such as natural rubber or synthetic rubber, is placed on the lower mold base 10, as shown in fig. 4, the basic material 70 covers the lower mold cavity 101, then the upper mold base 30 is closed,hot press molding for 7-12 min at oil press pressure of 140-150 kg/cm2Left and right; the hot pressing temperature is 150-170 ℃.
Step eight: the mold is opened again to prepare an outsole as shown in fig. 5, in which the darker colored portion 7 of the outsole corresponds to the primer 70 portion and the lighter colored portion 6 corresponds to the semi-finished blank 60 portion.
In the forming process, the buffer sheet and the spacing sheet are arranged between the lower die holder and the middle plate, so that direct collision between the metal lower die holder and the metal middle plate is effectively reduced, the service life of the die can be prolonged by nearly one time compared with the traditional process, the color overflow problem of the traditional process is also solved, the reject ratio of the color overflow problem in the traditional process is more than 50 percent, and the occurrence rate of non-color-overflow defective products is reduced to be less than 10 percent.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (8)

1. A method for preparing a semi-finished blank for an outsole, characterized in that it comprises the following steps:
(1) plasticating 25-30 wt% of butadiene rubber, 16-20 wt% of styrene-butadiene rubber, 20-25 wt% of solution-polymerized styrene-butadiene rubber and 30-38 wt% of isoprene rubber by an internal mixer and an open mill, wherein the internal mixing temperature is 120-140 ℃, and cooling to be used as main rubber;
(2) adding the main rubber into an internal mixer for mixing, wherein the mixing temperature is 60-80 ℃;
(3) adding 60-70 PHR of white smoke, 1-4 PHR of resin, 3.5-5 PHR of zinc oxide and 0.5-1 PHR of stearic acid, and mixing at 110-140 ℃;
(4) adding 1-3 PHR of an anti-aging agent, 2-4 PHR of an active agent, 3-6 PHR of a coupling agent, 0.5-1 PHR of wax and 4-7 PHR of polyethylene glycol, mixing at the temperature of 110-140 ℃, and discharging after mixing to serve as a base rubber for later use;
(5) adding 1-3 PHR of sulfur accelerator and 2-4 PHR of sulfur into the base rubber, uniformly mixing, and cooling to obtain a semi-finished blank, wherein the open mixing temperature is 50-80 ℃.
2. A method for forming an outsole, characterized by comprising the steps of:
the method comprises the following steps: preparing a forming die, wherein the forming die is provided with a lower die holder (10) and an upper die holder (30) capable of covering the lower die holder (10), the lower die holder (10) is provided with an upper surface facing the upper die holder (30) and a lower die cavity (101) concavely arranged from the upper surface, the upper die holder (30) is provided with a bottom surface facing the lower die holder (10) and an upper die cavity (301) concavely arranged from the bottom surface, the forming die also comprises a middle plate piece (20), the middle plate piece (20) is provided with a first side surface opposite to the lower die holder (10) and another second side surface opposite to the first side surface, and the second side surface is opposite to the upper die holder (30);
step two, preparing a spacer (40) and a buffer sheet (50), wherein the melting point of the spacer (40) is higher than 180 ℃, the hardness of the buffer sheet (50) is 80-100 HA, and the melting point is higher than 180 ℃;
step three: preparing a semi-finished blank (60); the semi-finished blank (60) is prepared by a preparation method according to claim 1;
step four: heating the mold to 140-170 ℃, then placing the semi-finished blank (60) on the lower mold (10) and covering the lower mold cavity (101), then placing the partition sheet (40) on the semi-finished blank (60), wherein the partition sheet (40) covers the semi-finished blank (60), then placing the buffer sheet (50) on the partition sheet (40), and the buffer sheet (50) covers the lower mold cavity (101); closing the middle plate (20) and the upper die holder (30) on the buffer sheet (50) to form a closed die; wherein the spacing sheet (40) and the buffer sheet (50) are positioned between the middle plate (20) and the lower die (10);
step five: the closed die is pressed at 140-150 kg/cm2Hot pressing for 10-20 seconds at 150-170 ℃;
step six: opening the die, taking out the middle plate (20), the buffer sheet (50) and the isolation sheet (40), and cleaning residual semi-finished blanks except the semi-finished blanks which correspond to and are pressed into the lower die cavity (101);
step seven: placing a sheet-shaped basic material (70) on the lower die holder (10), covering the lower die cavity (101) with the basic material (70), then closing the upper die holder (30), and performing hot press molding for 7-12 minutes under the oil press pressure of 140-150 kg/cm2Left and right; the hot pressing temperature is 150-170 ℃;
step eight: and opening the mold again to prepare the shoe outsole.
3. The molding method according to claim 2, wherein: the thickness of the spacer (40) is 0.01 to 0.05 mm.
4. The molding method according to claim 2, wherein: the thickness of the buffer sheet (50) is 0.5 to 1 mm.
5. The molding method according to claim 2, wherein: the spacer (40) is a PET fluorine film.
6. The molding method according to claim 2, wherein: the buffer sheet (50) is prepared by a process comprising: (1) firstly, plasticating 30-40 wt% of nitrile rubber, 30-40 wt% of butadiene rubber and 20-30 wt% of styrene butadiene rubber to be used as main rubber;
(2) adding the main rubber into an internal mixer, adding 70-80 PHR of white smoke, 3-5 PHR of zinc oxide, 1-5 PHR of zinc stearate, 4-7 PHR of a flame retardant and 3-7 PHR of mica powder, and mixing at 60-80 ℃ for 3-5 minutes;
(3) adding 4-10 PHR of polyethylene glycol and 1-3 PHR of wax, mixing at 90-120 ℃, mixing for 2-5 minutes, and discharging;
(4) adding 1-3 PHR of sulfur accelerator and 2-4 PHR of sulfur into the cooled rubber material, mixing uniformly on an open mill at 50-80 ℃ for 5-8 minutes, molding and cutting.
7. The molding method according to claim 2, wherein: the bottom material is natural rubber or artificial synthetic rubber.
8. The molding method according to claim 2, wherein: the upper die holder (30), the middle plate (20) and the lower die holder (10) are made of metal materials.
CN202011580817.2A 2020-12-28 2020-12-28 Preparation method of semi-finished blank for shoe outsole and forming method of shoe outsole Pending CN112625320A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2465940Y (en) * 2001-02-05 2001-12-19 宝成工业股份有限公司 Shoe mould device
CN205467273U (en) * 2016-01-22 2016-08-17 青岛双星名人实业股份有限公司注射鞋厂 Isolated mould of tectorial membrane is moulded to PU post forming sole heat
CN105906881A (en) * 2016-06-23 2016-08-31 福建省晋江市华银鞋材有限公司 Antibacterial sole material and preparing method thereof
CN107163321A (en) * 2017-05-31 2017-09-15 合肥绿洁环保科技有限公司 A kind of environmentally friendly vehicle yielding rubber element

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2465940Y (en) * 2001-02-05 2001-12-19 宝成工业股份有限公司 Shoe mould device
CN205467273U (en) * 2016-01-22 2016-08-17 青岛双星名人实业股份有限公司注射鞋厂 Isolated mould of tectorial membrane is moulded to PU post forming sole heat
CN105906881A (en) * 2016-06-23 2016-08-31 福建省晋江市华银鞋材有限公司 Antibacterial sole material and preparing method thereof
CN107163321A (en) * 2017-05-31 2017-09-15 合肥绿洁环保科技有限公司 A kind of environmentally friendly vehicle yielding rubber element

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