CN1103769A - Method for prodn. the sole moulded from foam plastic of poly vinyl acetate - Google Patents
Method for prodn. the sole moulded from foam plastic of poly vinyl acetate Download PDFInfo
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- CN1103769A CN1103769A CN 93120835 CN93120835A CN1103769A CN 1103769 A CN1103769 A CN 1103769A CN 93120835 CN93120835 CN 93120835 CN 93120835 A CN93120835 A CN 93120835A CN 1103769 A CN1103769 A CN 1103769A
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- eva
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Abstract
The EVA mixed granular raw material is formed into hot foamed semiproduct with predetermined size and shape through injection moulding, cross-linking and foaming, then it is put in a thermal preserving equipment with temp. of 150-240 deg.C, the high temp. foamed semiproduct is put in the well ventilated die located on the press table to undergo high pressure forming by the press, after proper time cooling a finished EVA mould forming foamed sole with special pattern, shape and size can be taken out. The whole process is quick and time saving.
Description
The present invention relates to a kind of EVA(plastic of poly vinyl acetate) finished product of foamed shoe sole, particularly relate to a kind of flow process and more simplify, and the manufacture method of the lower EVA moulded from foam sole of mould, the loss of presenting a theatrical performance as the last item on a programme.
Shoes have been the indispensable necessity of modern, and along with the prosperity of science and technology, though shoes only are people's livelihood articles for use, can't list high-tech product in, right its manufacture process but is no lack of high-tech technical method, especially compete the international economic community that is growing more intense, what people wanted is the cheap beautiful thing of thing, and the continuous increase of artificial shortage and cost, but do not have the price that increases finished product, have only from production procedure and simplify, simplifying the cost of being saved promptly is the increase of producing the article profit, so, each dealer all constantly is devoted to simplify flow process, seeks automation, rationalize, with competitiveness and the higher profit of creation that increases itself, especially labour-intensive plastic cement industries such as shoe industry are more necessary to be improved in this aspect, can recreate out another sheet Rong Jing.
EVA(plastic of poly vinyl acetate in the past) manufacture method of moulded from foam sole roughly includes following two kinds:
The manufacture process of first method is as follows:
A. batch mixing: utilize manually to weigh every basic material, again raw material is sent in the closed pressurization mixer according to certain proportion; Then mixed raw material is sent into Luntai prolongs pressure; To prolong raw material after the pressure at last through cooling, get final product the sheet mixed material.
B. semi-finished product moulding: the sheet mixed material inserted in the moulded board through HTHP make EVA foaming plate, again through the cutting machine punching press, after abrasive machine is worn into EVA foaming semi-finished product in advance;
C. going into mould handles: above-mentioned EVA foaming semi-finished product are inserted in the mould;
D. hot-forming: as above-mentioned mould to be inserted in the pressure platform that can heat cooling,, after water quench, can from mould, take out an EVA moulded from foam finished product again through the HTHP moulding of pressure platform.
In the above-mentioned manufacture process, can find following shortcoming:
1. in pheasant formation type process, be divided into manufacturing, cutting machine punching press and the abrasive machine pre-grinding moulding etc. of EVA foaming plate, need to use a large amount of labourers in the process.
After 2.EVA the foaming semi-finished product are inserted in the mould, mould is after being heated to EVA foaming semi-finished product softening (about 130 ℃～160 ℃) and extrusion forming on the pressure platform, need cooling (about 25 ℃～50 ℃) immediately, mould and pressure platform consume a large amount of energy in whole heating, the cooling procedure.
3. mould and pressure platform constantly repeat heating, cooling through for a long time, quicken loss, reduce the service life of mould and pressure platform.
The whole production cycle long, go into mould from EVA foaming semi-finished product and begin to spend 20 minutes time approximately to cooled finished product.
Second kind of manufacture method of EVA moulded from foam finished product in the past, its manufacture process is as follows:
A. batch mixing: utilize manually to weigh every basic material, again raw material is sent in the closed pressurization mixer according to certain proportion; Then mixed raw material is sent into Luntai prolongs pressure; The raw material that will prolong at last after the pressure cools off through cooling wheel, get final product the sheet mixed material, or be cut into granular mixed material through stock-cutter;
B. semi-finished product moulding: the sheet mixed material is inserted pressure platform heating pressurization make EVA mixed material crosslinked foaming become the foaming semi-finished product, the semi-finished product that will foam again place room temperature to cool off;
C. going into mould handles: above-mentioned cooled EVA foaming semi-finished product are inserted in the mould;
D. hot-forming: mould is inserted in the heatable pressure platform, through the HTHP moulding of pressure platform, again mould is moved to cooling pressure platform cooling after, can from mould, take out an EVA moulded from foam finished product.
Above-mentioned second kind of manufacture method of EVA moulded from foam finished product in the past, to make foaming half-finished artificial though reduced than first method, still has following shortcoming:
After 1.EVA the foaming semi-finished product are inserted in the mould, mould is after being heated to EVA foaming semi-finished product softening (about 130 ℃～160 ℃) and extrusion forming on the pressure platform, move to cooling pressure platform cooling (about 25 ℃～50 ℃) with being about to mould, though the pressure platform does not have the situation of the consumption energy of heating cooling, still consumes the energy in mold heated, the cooling procedure.
2. mould constantly repeats heating, cooling through for a long time, reduces the service life of mould.
3. mould is moved to the cold pressure platform from the thermal pressure platform and need consume manpower, and use two pressure platforms, increase equipment cost.
The whole production cycle long, begin need spend 20 minutes time approximately from EVA foaming semi-finished product into mould to cooled finished product.
Main purpose of the present invention is the manufacture method that is to provide a kind of EVA moulded from foam sole, and its utilizes works continuously, and shortening the whole manufacturing process time, to save manpower, and can reduce the loss of pressure platform and mould.
Based on above-mentioned purpose, the invention is characterized in an attemperator, to insert in the attemperator by the hot EVA foaming semi-finished product of EVA injection moulding machine institute moulding and be incubated, again the EVA foaming semi-finished product of insulation are inserted in the good mould of a heat radiation, mould places on the pressure platform through the exert pressure moulding, then cooling immediately get final product EVA foaming finished product, whole process had both been saved the manpower and the energy, shortened molding time again.
Manufacture method according to a kind of moulded from foam plastic of poly vinyl acetate sole provided by the present invention, mainly be to produce the required various raw materials of EVA foamed shoe sole, as polyethylene vinegar ethene particles, filler, blowing agent, crosslinking agent and pigment etc., in the differential weight type automatic feeding machine of packing into after the proper proportion mixing, processes such as heating melting, conveying, kneading mixing and extrusion through extruder, after cooling and stock-cutter cutting, make granular EVA foaming mixed material again; Again in the EVA injection moulding machine injects the mould of presenting a theatrical performance as the last item on a programme of pressurized, heated, and make hot EVA foaming semi-finished product, the semi-finished product that then EVA foamed are inserted in the attemperator and are incubated, attemperator is maintained at about between 150 ℃～240 ℃, again the foaming of the EVA in attemperator semi-finished product are inserted in the mould, mould places on the pressure platform that can force to cool off, through pressure platform high-pressure molding and cooling and shaping immediately, get final product a dimensionally stable, the special EVA foamed shoe sole finished product of shape decorative pattern; In the whole process, mould and pressure do not have the process that repeats to heat cooling, so reduce the energy that consumes, and prolong the service life of mould and pressure platform, whole manufacturing process adopts the serialization automatic control flow chart, thus save manpower, and shorten molding time and can increase output.
The present invention is described in detail below in conjunction with drawings and Examples:
Fig. 1 is the flow chart of the manufacture method of preferred embodiment EVA moulded from foam sole of the present invention.
Fig. 2 is the die cavity stereogram of presenting a theatrical performance as the last item on a programme of preferred embodiment EVA injection moulding machine of the present invention.
Fig. 3 is preferred embodiment EVA of the present invention half-finished stereogram that foams.
Fig. 4 is the stereogram of preferred embodiment mould of the present invention.
Fig. 5 is the constitutional diagram that the cooling pressure platform is forced in preferred embodiment of the present invention.
Fig. 6 is the stereogram of preferred embodiment EVA moulded from foam sole product of the present invention.
The manufacture method of a kind of moulded from foam sole of the present invention, its preferred embodiment sees also shown in Figure 1, mainly be that a mixing device (10), an EVA injection moulding machine (20), an attemperator (30), a mould (40) and a pressure platform (50) are arranged, and its manufacturing step is as follows:
A. batch mixing: mainly be to produce the required various raw materials of EVA foamed shoe sole, as EVA particles, filler, blowing agent, crosslinking agent and pigment etc., in the differential weight type automatic feeding machine according to the mixing device (10) of packing into after the proper proportion mixing, processes such as heating melting, conveying, kneading mixing and extrusion through extruder, after cooling and stock-cutter cutting, make granular EVA foaming mixed material again; The material rate of present embodiment is as follows:
EVA particles: be EVA-630,100 parts.
Filler: be calcium carbonate-9001,20 part.
Blowing agent: be blowing agent AC K1,3.2 parts.
Crosslinking agent: be crosslinking agent-DCP, 0.8 part.
Pigment: be zinc stearate, 0.8 part.
B. semi-finished product moulding: please cooperate consult shown in Figure 2, EVA foaming mixed material is in EVA injection moulding machine (20) is injected the die cavity (22) of present a theatrical performance as the last item on a programme (21) of pressurized, heated, the temperature of (21) crosslinked foaming of presenting a theatrical performance as the last item on a programme is about between 150 ℃～240 ℃, please cooperate and consult shown in Figure 3ly, and crosslinked foaming becomes hot EVA foaming semi-finished product (23) in present a theatrical performance as the last item on a programme (21); The temperature of injection machine is between 85 ℃～90 ℃ in the present embodiment, and the temperature of present a theatrical performance as the last item on a programme (21) is decided to be 180 ℃, and crosslinking time is six minutes;
C. insulation is handled: the semi-finished product that then EVA foamed are inserted insulation in the attemperator (30), and attemperator (30) can be the heat tracing platform of an incubator (as baking oven) or production line; Attemperator (30) is maintained at about between 150 ℃～240 ℃; The attemperator of present embodiment (30) is a baking oven, and holding temperature is 180 ℃;
D. going into mould handles: please cooperate and consult shown in Figure 4ly, it is good and have in the mould (40) of given shape decorative pattern the foaming semi-finished product of the EVA in the incubator (23) to be inserted a heat radiation again;
E. cold moudling: please cooperate and consult shown in Figure 5ly, mould (40) places on the pressure platform (50) that can force to cool off, through pressure platform (50) high-pressure molding and cooling forming immediately; The pressure of pressure platform is at 30～150Kg/cm
2Between, the pressure of present embodiment pressure platform (50) is 50Kg/cm
2, pressurize cool time is five minutes, please cooperate to consult shown in Figure 6ly, takes out from mould, prune again rim charge get final product a dimensionally stable, the special EVA moulded from foam sole product (60) of shape decorative pattern.
In the whole manufacturing process via the foregoing description, can understand the present invention and have following advantage:
1. mould (40) and pressure platform (50) only have cooling procedure and do not have a heating, thus reduce the consumption of energy, and mould (40) and pressure platform (50) do not have and repeat to heat the process of cooling, so can prolong the service life of mould (40) and pressure platform (50).
2. whole manufacturing process adopts the serialization automatic control flow chart, so save manpower.
3. manufacture process of the present invention is saved the time of many heating cooling, so can go into mould to cooling from foaming semi-finished product (23) and take out finished product (60) in about five minutes, has saved many molding times than manufacture method in the past, so can increase output.
In sum, the manufacture method of a kind of moulded from foam plastic of poly vinyl acetate sole of the present invention, it utilizes incubator to keep EVA half-finished temperature that foams, and the semi-finished product that can directly EVA be foamed are inserted in the mould, and can be cooled off after molded as adding by pressure, consume energy and can reach to reduce, prolong the life-span of mould and pressure platform, more can shorten numerous advantages such as manufacturing time and saving manpower, manufacture process for EVA moulded from foam finished product is a quantum jump, improve whole operating efficiency, increase output, can find out thus the practical value of the present invention on industry.
Claims (5)
1, a kind of manufacture method of moulded from foam plastic of poly vinyl acetate sole, it include a mixing device ,-EVA injection moulding machine, an attemperator, a mould and a pressure platform form, and its manufacturing step includes batch mixing, semi-finished product moulding, is incubated, goes into five steps such as mould processing, cold moudling, it is characterized in that:
EVA foaming semi-finished product after semi-finished product are shaped are to place attemperator to be incubated, and the temperature of attemperator is between 150 ℃～240 ℃; Directly insert in the mould by the semi-finished product that in the attemperator EVA foamed again, through the high pressure of pressure platform and force to make an EVA moulded from foam finished product after the cooling.
2, according to the manufacture method of the described a kind of moulded from foam plastic of poly vinyl acetate sole of claim 1, it is characterized in that: incubator is an incubator.
3, according to the manufacture method of the described a kind of moulded from foam plastic of poly vinyl acetate sole of claim 1, it is characterized in that: incubator is the heat tracing platform of production line.
4, according to the manufacture method of the described a kind of moulded from foam plastic of poly vinyl acetate sole of claim 1, it is characterized in that: the pressure platform is one can force the pressure platform that cools off.
5, according to the manufacture method of the described a kind of moulded from foam plastic of poly vinyl acetate sole of claim 1, it is characterized in that: the pressure of pressure platform is at 30～150kg/cm
2Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93120835 CN1103769A (en) | 1993-12-15 | 1993-12-15 | Method for prodn. the sole moulded from foam plastic of poly vinyl acetate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93120835 CN1103769A (en) | 1993-12-15 | 1993-12-15 | Method for prodn. the sole moulded from foam plastic of poly vinyl acetate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1103769A true CN1103769A (en) | 1995-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93120835 Pending CN1103769A (en) | 1993-12-15 | 1993-12-15 | Method for prodn. the sole moulded from foam plastic of poly vinyl acetate |
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| CN (1) | CN1103769A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998032592A1 (en) * | 1997-01-29 | 1998-07-30 | Manuel Berna Gomez | Process for fabricating expansible and cross-linkable eva (ethyl-vinyl-acetate) plates by injection |
| CN1091025C (en) * | 1999-11-10 | 2002-09-18 | 刘坤钟 | Method for moulding foaming sole |
| CN104305643A (en) * | 2014-10-18 | 2015-01-28 | 张武 | Process for manufacturing heels for cotton rubber shoes |
| CN106182857A (en) * | 2016-09-30 | 2016-12-07 | 莆田市荔欣嘉贸易有限公司 | A kind of manufacture method pressing from both sides flip-flop |
| CN109940916A (en) * | 2013-03-15 | 2019-06-28 | 耐克创新有限合伙公司 | The foaming method of thermoplastic elastomer (TPE) |
| CN111713802A (en) * | 2020-03-02 | 2020-09-29 | 清远广硕技研服务有限公司 | Sole manufacturing method and shoe |
| WO2022041933A1 (en) * | 2020-08-27 | 2022-03-03 | 茂泰(福建)鞋材有限公司 | Preparation method for double-hardness molded foamed sole, and foamed sole thereof |
| WO2022041924A1 (en) * | 2020-08-27 | 2022-03-03 | 茂泰(福建)鞋材有限公司 | Method for preparing foamed shoe sole by secondary mold pressing |
-
1993
- 1993-12-15 CN CN 93120835 patent/CN1103769A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998032592A1 (en) * | 1997-01-29 | 1998-07-30 | Manuel Berna Gomez | Process for fabricating expansible and cross-linkable eva (ethyl-vinyl-acetate) plates by injection |
| CN1091025C (en) * | 1999-11-10 | 2002-09-18 | 刘坤钟 | Method for moulding foaming sole |
| CN109940916A (en) * | 2013-03-15 | 2019-06-28 | 耐克创新有限合伙公司 | The foaming method of thermoplastic elastomer (TPE) |
| CN109940916B (en) * | 2013-03-15 | 2021-05-11 | 耐克创新有限合伙公司 | Method for foaming thermoplastic elastomer |
| CN104305643A (en) * | 2014-10-18 | 2015-01-28 | 张武 | Process for manufacturing heels for cotton rubber shoes |
| CN106182857A (en) * | 2016-09-30 | 2016-12-07 | 莆田市荔欣嘉贸易有限公司 | A kind of manufacture method pressing from both sides flip-flop |
| CN111713802A (en) * | 2020-03-02 | 2020-09-29 | 清远广硕技研服务有限公司 | Sole manufacturing method and shoe |
| WO2022041933A1 (en) * | 2020-08-27 | 2022-03-03 | 茂泰(福建)鞋材有限公司 | Preparation method for double-hardness molded foamed sole, and foamed sole thereof |
| WO2022041924A1 (en) * | 2020-08-27 | 2022-03-03 | 茂泰(福建)鞋材有限公司 | Method for preparing foamed shoe sole by secondary mold pressing |
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