CN1236904C - Producing method for ethane vinyl acetate foaming shoes material - Google Patents

Producing method for ethane vinyl acetate foaming shoes material Download PDF

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CN1236904C
CN1236904C CN 02132049 CN02132049A CN1236904C CN 1236904 C CN1236904 C CN 1236904C CN 02132049 CN02132049 CN 02132049 CN 02132049 A CN02132049 A CN 02132049A CN 1236904 C CN1236904 C CN 1236904C
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mould
foaming
temperature
vinyl acetate
cooling
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CN1481985A (en
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陈锦龙
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QINGLU SHOES MAKING Ltd
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QINGLU SHOES MAKING Ltd
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Abstract

The present invention relates to a producing method for an ethane vinyl acetate foaming shoe material. The producing procedure of the present invention is characterized in that raw materials are directly poured in a mold which is especially designed, and a foaming flat pressing table which is especially designed is matched for carrying out one time foaming and forming until an expected ultimate finished product is produced. The producing method for an ethane vinyl acetate foaming shoe material has the following particular steps: (1), mixing the materials; (2), banburying; (3) beginning smelting; (4), pumping granules; (5), weighing the materials; (6), foaming in a mold; (7), cooling; (8), collecting. A shoe shape which is integrally formed has no surplus edges, and integration is beautiful. The present invention has no waste of surplus materials, such as material feeding grooves, material discharge heads, material tail ends, etc., which enables manpower and time required by finishing and processing to be reduced, and the loss of the materials for cleaning a jet gun barrel to be saved. The producing method for an ethane vinyl acetate foaming shoe material has the advantages of full use of raw materials, simple operation of processes, production cost reduction, environmental protection pollution reduction, effective use of energy source and excess waste avoidance, and breakthrough progress economic benefit is provided for industry.

Description

The manufacture method of ethane vinyl acetate foaming shoes material
Technical field
The invention relates to a kind of manufacture method of ethane vinyl acetate foaming shoes material, be meant a kind of " the in-molded method of macromolecule " especially, be called for short again [foam-in-mould method], its procedure for producing is meant that raw material directly pours mould into, and cooperates the foaming concora crush platform of particular design to carry out one step foaming to be formed into required final finished; Implementation step is: (one) batching, (two) sharp flow processs such as grain, (five) pound material, (six) foam-in-mould, (seven) cooling, (eight) arrangement of taking out by (banburying), (three) roller (opening refining), (four); Foamed forming process via above step, and carry out one step foaming by the foaming concora crush platform that cooperates particular design and be formed into required final finished, the footwear type integral body of its gained is comparatively attractive in appearance, can not only one-body moldedly there be surplus limit, and can improve ground hopper, the material consumption that penetrates clouts such as stub bar and material tail is useless, and reduce the manpower time-consuming processing in man-hour, and can save and clean the loss of penetrating the gun barrel materials, raw material can make full use of, flow operations is simple, more reduces production costs, and reduces environmental pollution and effectively use the energy, avoid excessively consuming giving up, industry is provided the economic benefit of breakthrough.
Background technology
As shown in Figure 1, manufacturing process for general using ethylene vinyl acetate copolymer (EVA) foaming shoe material: batching → profit takes (banburying) → roller (opening refining) → slice → pound material → concora crush platform foaming → cool sheet → open skin → itemize → tiltedly cut → severing → grain base to process and (be included in copy platform edging, chamfering, fall waist, sweep palm fibre etc.) → concora crush platform thermoforming → arrangement (comprises deburring, cut the hole, clean, packing etc.), it more than is the tradition foaming secondary hot pressing method of forming (being called for short traditional method), it mainly is to make the foaming semi-finished product earlier, afterwards, become finished product by semi-finished product through hot pressing again.Its major defect is:
This traditional manufacturing process, the flow process complexity, raw material availability only has an appointment 45%, and loss is about 55%, with present worldwide production measuring and calculating, the waste material that loss in every month is about 5,000,000 tons, not only cause about 5,000,000 tons the waste in every month of whole world petroleum-based energy, but also the environmental issue that causes serious waste disposal to bring, therefore to have a raw material availability low for traditional method technology, the production cost height, serious environmental is polluted, a large amount of defectives that consume problems such as giving up of the energy but also cause.
Based on above distinct disadvantage, so industry been has just has been researched and developed another kind of shooting foaming once-through method (promptly being commonly called as method of radiation), consult shown in Figure 2, its processing procedure is: batching → profit is taken (banburying) → roller (opening refining) → take out grain (granulation) → spice (S material and L expect) → shot foamed moulding (injection) → cooling (cooling) → arrangement (comprising deburring, comparison, cleaning, packing etc.), and the step of its enforcement is:
One, batching:, select used raw material according to the requirement of final finished; Determine required prescription, carry out weigh batching according to prescription;
Two, the sharp (Kneading that takes; Or title banburying close mixing): it is sharp by in the machine (banbury) that load weighted raw material is poured into adding pressure type, carries out mixing under the condition of uniform temperature, time;
Three, roller (opening refining): the sharp raw material that has mixed in the machine of taking, be the enterprising one-step melting of uniform temperature roller machine (mill), so that each component can be uniformly dispersed, compared to traditional method, method of radiation is owing to there is the further mixing of taking out the grain and the process of ejaculation of process back segment, therefore, method of radiation only needs one section roller machine just can reach to final mixing purpose;
Four, take out grain: through profit take, the softening raw material of roller after mixing, utilize grit maker to make master batch (masterbatch), be beneficial to the charging of ejaculator gun barrel;
Five, spice (S material, the L material): take in profit for avoiding each batch material, roller, take out board or conditional instability in the operating process, it is different to cause that crosslinking agent (bridging agent) and blowing agent consume, and the expansion ratio difference that makes, can influence finished size and quality, be necessary composition of raw materials is adjusted, be set at the expansion ratio big (being the L material) and the raw material of expansion ratio little (S material) and separate batching, profit is taken, roller and take out grain, therefore before penetrating, needing that raw material is carried out multiplying power determines, multiplying power requirement according to the rules then, determine the consumption proportion of S material and L material, and weigh respectively, spice mixing in mixer, expansion ratio is stable to be reached to required multiplying power;
Six, penetrate (injection) foaming: use special-purpose ejaculator, with the pellet after evenly of spice, charging by screw rod (ejaculation gun barrel), softening, directly injection enters and configures pressure, temperature and adding in the mould of sulphur time (crosslinking time), make pellet after softening in mould with certain pressure, temperature and time is finished the crosslinked foaming moulding, add the end of sulphur time, the automatic moment die sinking of mould, finished product will be owing to its pressure in the airtight inner formation of mould, strength by the moment pressure release, automatically jump out mould, finish foamed forming process, but in the manufacturing process of method of radiation, consumption is given up in the die feeding ditch, the material loss that penetrates stub bar and material tail occupies 15% approximately, when being that in addition material that raw material uses is not changed, loss that clean to penetrate gun barrel materials etc. because of need accounts for 15%, comprehensively adds the General Logistics Department, and the method for radiation of conventional art is that material loss accounts for 30%;
Seven, cooling (cooling) typing: the finished product of just having finished foaming, temperature is higher, for preventing finished product sharply cooling contraction in normal temperature, cause the outward appearance distortion, and the inside residual thermal stress of Chan Shenging can't be eliminated therefrom, need the finished product that temperature is higher to put into the cooling of cooling streamline rapidly, general cooling streamline, can make temperature divide the 3-4 section to carry out the gradient cooling cooling from high to low, with the stabilized contraction process, eliminate inner residual thermal stress, reduce the contraction in back segment processing or use, guaranteed quality is stable;
Eight, arrangement: the finished product behind the cooling streamline, need ambient stable after 24 hours, can put in order, arrangement comprises deburring, than subsequent treatment such as plate, washing and packings.
Cooperate and to consult Fig. 3-shown in Figure 5, for mould that above-mentioned method of radiation used 1 and therefore prepared moulding footwear 16 (this with footwear in the end be example) above-mentioned traditional method of radiation mould 1 on, counterdie 10,11 die parting line 12 all designs the middle part in the finished product outer rim, that is last, counterdie 10,11 cover after, according to die parting line 12 die cavity 13 is divided into up and down half and half, last, counterdie 10, each group of the top and bottom of 11 liang of relative far-ends is provided with one and penetrates heating plate 14, this each ejaculation heating plate 14 is a monoblock and last, counterdie 10, the plate body of 11 collocation, the temperature that the temperature design of heating plate 14 its heating is single control shows, yet, each position thickness and shape specification for footwear type finished product have nothing in common with each other, this just requires the required temperature conditions of different foamings to adapt to, to provide each position energy same adding in the sulphur time (crosslinking time), reach the crosslinked effect identical with foaming, but in traditional method of radiation technology, because the material temperature that penetrates and the temperature of crosslinked foaming moulding are more or less the same, therefore single heating plate only has single temperature control, can not cooperate the required foaming condition of the different thickness of footwear type (as the height of temperature, the length of time etc.) demand that provides relative adaptation to cooperate; Therefore, for making moulding footwear 16 demoulding smoothly of method of radiation, so in the collocation, counterdie 10,11 must be assigned half and half female parts, so that cover the die cavity 13 that the back forms a tool footwear type relatively, thus, moulding footwear 16 finished products that method of radiation obtained just respectively have most respectively last, counterdie 10, in 11, though can make finished product like this when adding that the sulphur time, (crosslinking time) finished die sinking, the moment demoulding, prevent the distortion of outward appearance, but on, counterdie 10, die parting line 12 between 11 makes moulding footwear 16 periphery surplus limit 17 occur, has influenced whole (as shown in Figure 4) attractive in appearance, simultaneously and increased the difficulty of deburring, and finished product is when being taken out by mould 1, when initial injection, be ground hopper, penetrating parts such as stub bar and material tail all has unnecessary defective material 15 (as shown in Figure 5), all must remake defective material 15 to handle, and the material loss of this part promptly occupies about 15%, when the raw material material of footwear material is not changed, must clear up the ejaculation gun barrel again again in addition, and the loss of cleaning ejaculation gun barrel materials etc. then accounts for 15%.
And, procedure for producing in traditional method of radiation is to utilize special-purpose ejaculator, feed injection is gone in the mould 1, and foaming is to required final finished, its raw material availability of processing procedure about 70% for method of radiation, the proportion of goods damageds about 30%, compare with traditional method, though method of radiation makes moderate progress in more traditional method aspect technological process and the raw material availability, but the special-purpose apparatus expensive that penetrates machine still has shortcoming in the utilization of mould, and at production cost, environmental protection, in the energy problem, still improvement that can't making a breakthrough property, so further developing of method of radiation still is subjected to very big restriction.
The inventor all has the distinct disadvantage of production cost, environmental protection, energy aspect at above traditional processing procedure, and the spy is concentrated on studies, and utilization great amount of manpower and material resources resource is developed technical scheme of the present invention.
Summary of the invention
Main purpose of the present invention provides a kind of manufacture method of ethane vinyl acetate foaming shoes material, a kind of by innovating " the macromolecule foam-in-mould method of forming ", needn't use expensive special-purpose ejaculator, can directly raw material be poured in the mould, and the foaming concora crush platform of cooperation particular design, make it once be foamed into required finished product, reach the purpose that flow operations is simple, raw material makes full use of, reduces production costs, reduces environmental pollution, effectively use the energy and avoid excessive consumption to give up.
The object of the present invention is achieved like this: a kind of manufacture method of ethane vinyl acetate foaming shoes material, it is a kind of [the macromolecule foam-in-mould method of forming] (being called for short [foam-in-mould method] again), the procedure for producing of so-called foam-in-mould method is meant that raw material directly pours mould into, and cooperates foaming concora crush platform to carry out one step foaming to be formed into desired final finished; Implementation step is:
(1) batching: according to the requirement of the physical property of final finished, color etc., select used raw material, determine required prescription,, carry out weigh batching according to raw material variety and the quantity that prescription requires;
(2) sharp by (banburying): it is sharp by in the machine (banbury) that every batch of load weighted all raw materials are poured into adding pressure type successively by a graded, under the condition of uniform temperature, time, carry out mixing, its objective is and make various raw materials under soft state, mix to physical property, and control certain temperature and time, avoiding producing some disadvantageous chemical reactions, mainly is the cross-linking reaction and the blowing agent decomposition reaction of crosslinking agent;
(3) the sharp raw material that has mixed in the machine of taking of roller (opening refining), the enterprising one-step melting of roller machine (mill) that uniform temperature is arranged, so that each component can be uniformly dispersed, and because after the roller step, have through taking out the further mixing of a step, therefore, only need one section roller machine, just can reach to final mixing purpose in the enforcement of foam-in-mould method;
(4) take out grain (granulation): through profit take, the softening raw material of roller after mixing, utilize grit maker, make it become the master batch of laminar normal temperature;
(5) pound material: according to the different capabilities requirement of mould size, weighing pellet;
(6) foam-in-mould: load weighted pellet is poured in the mould with the measuring cup holding again, and this mould is the particular design that has preset pressure, temperature and added sulphur time (crosslinking time);
(7) cooling: the finished product of just having finished foaming via the previous step gained, its temperature is higher, easily cause the outward appearance distortion for prevent that finished product from sharply cooling off to shrink in normal temperature, and the inside residual thermal stress that produces therefrom can't be eliminated, just finished product that must temperature is higher is put into the streamline cooling rapidly, wherein when cooling step, be general streamline, can divide the 3-4 section to carry out the gradient cooling cooling from high to low according to temperature, with the stabilized contraction process, eliminate inner residual thermal stress, reduce the contraction in back segment processing or use, guaranteed quality is stable;
(8) arrangement: need after normal temperature stablize twenty four hours, can to put in order through the finished product behind the streamline, put in order comprise deburring, than the processing of final steps such as plate, washing and packing.
Describe in detail below in conjunction with the preferred embodiment conjunction with figs..
Description of drawings
Fig. 1 is the manufacturing process calcspar of the tradition foaming secondary hot pressing method of forming.
Fig. 2 is the manufacturing process calcspar of traditional shooting foaming once-through method (being method of radiation).
Fig. 3 is the mould structure schematic diagram of traditional method of radiation.
Fig. 4 has the schematic diagram that has more surplus limit for the emitted moulding footwear of traditional method of radiation.
Fig. 5 has defective material schematic diagrames such as stub bar, material tail, ground hopper for the emitted moulding footwear of traditional method of radiation.
Fig. 6 is a manufacturing process calcspar of the present invention.
Fig. 7 is a mould structure schematic diagram of the present invention.
The specific embodiment
Consult Fig. 6-shown in Figure 7, the present invention is a kind of manufacture method of ethane vinyl acetate foaming shoes material, promptly a kind of [the macromolecule foam-in-mould method of forming], be called for short again [foam-in-mould method], the procedure for producing of so-called " foam-in-mould method " is meant that raw material directly pours mould into, and cooperates the foaming concora crush platform of particular design to carry out one step foaming to be formed into required final finished; Implementation step is:
One, batching: according to the requirement of final finished physical property, color etc., select used raw material, determine required prescription, raw material variety and quantity according to the prescription requirement, carry out weigh batching, because batching is for the known technology of those skilled in the art, so do not describe in detail;
Two, the sharp (Kneading that takes; Or banburying close mixing): it is sharp by in the machine (banbury) to pour adding pressure type successively into by a graded in every batch of load weighted all raw materials, under the condition of uniform temperature, time, carry out mixing, the purpose that profit is taken is that various raw materials are mixed to physical property under soft state, and control certain temperature and time, avoiding producing some disadvantageous chemical reactions, mainly is the cross-linking reaction and the blowing agent decomposition reaction of crosslinking agent;
Three, roller (Rolling; Or open and refine open mixing): take the raw material that has mixed in the machine through profit, in that the enterprising one-step melting of roller machine (mill) of uniform temperature is arranged, so that each component can be uniformly dispersed; With the contrast of traditional method, the foam-in-mould method since have through the back take out the further mixing of a step, therefore, the foam-in-mould method only needs one section roller machine, just can reach to final mixing purpose;
Four, take out grain (Pelleting; Or granulation making pellet): through profit take, the softening raw material of roller after mixing, utilize grit maker, make it become the master batch of laminar normal temperature, particle thickness is controlled in the 2mm, laminar pellet helps it in foam-in-mould mould internal softening process, the operation of the discharge of pellet clearance air and filling pellet, it is bad bad with the excessive contained side that causes of pellet to reduce exhaust;
Five, pound material: according to the requirement of the different capabilities of mould size, weighing pellet;
Six, foam-in-mould (Blown-in-mold): load weighted pellet is poured in the mould 2 with the measuring cup holding again, and this mould 2 is to have preset pressure, temperature and added the sulphur time (crosslinking time); And this mould 2 (as shown in Figure 7), it is to establish by the patrix 20 and the counterdie 21 of the predetermined footwear type of tool to form, and be, counterdie 20, on 21, respectively be equipped with some plate bodys 220 below, 221, the 222 last heating plates 22 that link, and by some plate bodys 230,231, the 232 following heating plates 23 that link, on, following heating plate 22, each plate body 220 of 23,221,222,230,231,232 all respectively connect temperature control equipment (drawing does not indicate) in addition, some heat transfer rates blind rivet 200 (blind rivet 200 is made of aluminium matter or copper heat transfer nail) faster is installed in patrix 20 in addition, blind rivet 200 can be set as shapes such as L type or T type, for can help the moment die sinking time, the smooth demoulding of foaming finished product, secondly again on each, following heating plate 22,23 plate body 220,221,222,230,231,232 is single temperature control, make, following heating plate 22, each plate body 220 of 23,221,222,230,231,232 different parts corresponding to the footwear type, default different temperature conditions is (as the temperature height, time length etc.), cooperate the distribution setting of blind rivet 200 simultaneously, with different thickness respective temperature partly at footwear, pressure demand is done suitable adjustment and collocation, and out of the ordinary different partly all can samely the adding in the sulphur time (crosslinking time) that can satisfy the footwear of desiring foaming really reaches the crosslinked foaming same effect.So, mould 2 facilities of the present invention are when using operation, after upper and lower mould 20,21 covers relatively, the inner die cavity 24 that forms the footwear type, and die cavity 24 major parts are positioned at counterdie 21 parts, and the die parting line 25 that covers the upper and lower mould 20,21 in back just is positioned at die cavity 24 top edges, makes in these footwear behind the end shaping and demoulding, and its periphery can one-body moldedly can not produce superfluous material; Making it does not more influence the attractive in appearance of footwear type integral body when the deburring operation.So, impose certain pressure, temperature by 22,23 pairs of upper and lower moulds 20,21 of upper and lower heating plate, and after one period scheduled time, promptly finish softening and crosslinked foaming moulding, finish when adding the sulphur time, mould 2 automatic moment die sinkings, finished product will be owing to the strength of the airtight inner pressure moment pressure release that forms of the die cavity 24 of its mould 2, and assisting by the blind rivet 200 in the patrix 20, and allow footwear type finished product jump out mould 2 automatically, finish foamed forming process, it can not only one-body moldedly can not produce superfluous material, and footwear type integral body is comparatively attractive in appearance; The material consumption that foam-in-mould method of the present invention again do not have ground hopper, penetrate clouts such as stub bar and material tail is useless, and the manpower and the time of required cost when handling, and can save and clean the loss of penetrating the gun barrel materials, and raw material can be made full use of;
Seven, cooling (cooling): the finished product of just having finished foaming via the previous step gained, its temperature is higher, and easily cause the outward appearance distortion for prevent that finished product from sharply cooling off to shrink in normal temperature, and the inside residual thermal stress that produces therefrom can't be eliminated, just finished product that must temperature is higher is put into the cooling of cool stream waterline rapidly, be general cool stream waterline, can divide the 3-4 section to carry out the gradient cooling cooling from high to low according to temperature, with the stabilized contraction process, eliminate inner residual thermal stress, the contraction of minimizing in back segment processing or use, guaranteed quality is stable;
Eight, arrangement: the finished product behind the cool stream waterline; Need can to put in order after normal temperature is stablized 24 hours, arrangement comprises deburring, than the processing of final steps such as plate, washing and packing.Therefore, [the macromolecule foam-in-mould method of forming] of the present invention finishes foamed forming process via above step, and carry out one step foaming by the foaming concora crush platform that cooperates particular design and be formed into required final finished, the foaming shoe material of moulding its can not only be one-body molded, can not produce superfluous material, footwear type integral body is comparatively attractive in appearance, the foam-in-mould method does not have ground hopper, the material consumption that penetrates clouts such as stub bar and material tail is useless, and defective material is when handling, the manpower of required cost and time, more can save and clean the loss of penetrating the gun barrel materials, raw material can be made full use of, and flow operations be simple, and then can reduce production costs, and can reduce environmental pollution and effectively use the energy, avoid excessive consumption useless, industry is provided the economic benefit of breakthrough.
Via above explanation, the present invention has the following advantages as can be known:
1, reduce cost, stabilizing quality: the raw material availability of foam-in-mould method of the present invention is high, makes stream Journey shortens, and can reduce each Connection between Processes time error and cause affecting the stable of quality, and equipment investment is low, because of This, its cost of material, cost of labor, equipment cost are all lower, meet the requirement of high economic benefit.
2, raw material takes full advantage of, reduces the handling problem of waste material and waste material, is beneficial to environmental protection: environmental issue Each country, the common problems of concern of each enterprise, macromolecule foam-in-mould method of the present invention is because raw material Utilization rate does not produce the waste material of unfavorable environmental protection basically up to more than 95%, has both saved the expense of waste disposal With, be conducive to again the protection of environment, global environmental protection cause has been made a greatly contribution.
3, the energy fully uses, and effectively promotes industrial competitiveness: foam-in-mould method of the present invention is because its flow process Short, equipment is simple, can reduce the use of producing the energy, simultaneously, raw material availability increases substantially, and is industry Sustainable development lay the foundation.
4, unique no die parting line mould design and foam-in-mould board temperature of heating plate segmentation control design And the technical foundation of macromolecule foam-in-mould technology; And formed shoe does not have the surplus limit of die parting line, also do not have ground hopper, Penetrate stub bar and material tail, clean the loss of penetrating the gun barrel materials, except can reducing waste material, save surplus limit, residual The processing of material has promoted production efficiency especially greatly; Can make approximately compared to traditional method of radiation twenty four hours 65 pairs, use method of the present invention then can produce about 140 pairs output in identical twenty four hours, not only Output tradition doubles abovely, and its product quality is better than the production quality of traditional foaming or method of radiation.
5, foam-in-mould method of the present invention is used the die device of innovative design, and this foam-in-mould forming technique is Directly pour raw material into special mould inside, therefore counterdie inside, need counterdie inside to have specifically Enough spaces are in order to load raw material, but the mould that in the past designed has not had enough spaces in its counterdie, must establish Method changes aspect Design of Dies and designed idea in the past, whole mould inside space (being die cavity) design lower Mould is to be fit to the characteristics of foam process in the macromolecule.
6, foam-in-mould board temperature of heating plate of the present invention is segmentation control design, and foam-in-mould method raw material is Be heated to temperature requiredly from normal temperature, need long process, if utilize the single temperature control of traditional heating plate System, variant position can not reach its temperature required condition synchronously, so need to temperature of heating plate be designed to segmentation, Separately be configured to separately independent control, to satisfy different parts the different demand conditions of temperature be only, therefore, The present invention namely cooperates segmentation, separately independently controls separately the heating plate that forms of setting up, to satisfy not on mould With the demand of the forming temperature of the required different condition in position, guarantee that variant position can add the sulphur time same Reach the crosslinked effect identical with foaming in (crosslinking time).
7, again according to the shape of required foamed product, the different requirements of specification, the die cavity shape of foaming molding mold Shape, specification are not identical yet, that is the length at each position of die cavity, width, thickness and shape are different, In the foamed product thicker part, die cavity inner space thickness larger part just, the raw material at this position needs higher temperature Degree or longer sulfur foam time; The raw material that foaming forming technique of the present invention requires to be dispersed in the die cavity can Reach simultaneously sulfuration and finish, and when mould moment die sinking, can make the smooth demoulding of foamed product, to guarantee Moment, the foamed product outward appearance was normal and stable, therefore special in the patrix of its corresponding site the distributing installation speed of conducting heat Spend faster blind rivet (by aluminium matter or the copper heat transfer nail of making). Be set as L-type or the shape such as T-shaped by blind rivet, When helping the moment die sinking, the smooth demoulding of foamed product, so also just overcome die cavity not mean allocation in upper, Lower intermode, and be designed to most of misgivings that when counterdie, may cause the unfavorable finished product demoulding thereby the present invention Overcome, so the distinctive blind rivet of the present invention has more the double effects that improves heat-transfer effect and stripping result.
8, the present invention only need change the upper and lower mould of group and get final product when mold exchange more, does not need whole group of mould to change, no Only the die change operation comparatively saves time, and mould can be common to the upper and lower mould collocation of different size.
In sum, the present invention really can reach desired purpose and use effect, and in like product It is known, formerly public more to have had no identical inventive features, so the present invention has novelty, creativeness and practicality.

Claims (4)

1, a kind of manufacture method of ethane vinyl acetate foaming shoes material, it is the macromolecule foam-in-mould method of forming, its procedure for producing is directly to pour raw material into mould; And cooperate foaming concora crush platform to carry out one step foaming to be formed into desired final finished, its concrete implementation step is as follows:
(1) batching: according to the requirement of the physical property and the color of final finished, select used raw material, determine required prescription,, carry out weigh batching according to raw material variety and the quantity that prescription requires;
(2) banburying: every batch of load weighted all raw materials are poured into carry out mixingly in the adding pressure type banbury, various raw materials are mixed under soft state, and the control temperature and time, avoid the cross-linking reaction of crosslinking agent and the decomposition reaction of blowing agent;
(3) open refining: the raw material that will in banbury, mix, at the enterprising one-step melting of mill, so that each component is uniformly dispersed;
(4) take out grain: will be through banburying, open the softening raw material of refining after mixing, utilize grit maker, make it become the master batch of laminar normal temperature;
(5) pound material: according to the different capabilities requirement of mould size, weighing pellet;
(6) foam-in-mould: load weighted pellet with the measuring cup holding, is poured in the mould again, and this mould is to have preset pressure, temperature and added the sulfur-crosslinked time;
(7) cooling: the finished product of finishing foaming via step (six) gained, its temperature is higher, cause the outward appearance distortion in order to prevent that finished product from sharply cooling off to shrink in normal temperature, and the inside residual thermal stress that produces therefrom can't be eliminated, finished product that must temperature is higher is put into the streamline cooling rapidly, wherein when cooling step, divide the 3-4 section to carry out the gradient cooling cooling from high to low according to temperature, with the stabilized contraction process, eliminate inner residual thermal stress, the contraction of minimizing in back segment processing or use, guaranteed quality is stable;
(8) arrangement: need to put in order after normal temperature is stablized 24 hours through the finished product behind the streamline, this arrangement comprises deburring, than plate, washing and packing again;
Being somebody's turn to do the mould facility that is used in (six) foam-in-mould step is patrix and the counterdie that is provided with predetermined footwear type, connect respectively in the above and below of this upper and lower mould and to establish the upper and lower heating plate that links by some plate bodys, each plate body of this upper and lower heating plate all distinctly connects temperature control equipment, form temperature of heating plate and be designed to separately independently temperature control separately of segmentation, demand with the forming temperature condition that satisfies the required different condition in the different thickness positions of footwear type, guarantee that variant position can add in the sulfur-crosslinked time same, have the crosslinked effect identical with foaming; In the patrix of the mould that is used in this foam-in-mould step, some heat transfer rates blind rivet faster is installed.
2, according to the manufacture method of the described ethane vinyl acetate foaming shoes material of claim 1, it is characterized in that: these (four) take out a step and take out grain, particle thickness is controlled in the 2mm, and be laminar pellet, help it in foam-in-mould mould internal softening process, the operation of the discharge of pellet clearance air and filling pellet, bad bad to reduce exhaust with the excessive contained side that causes of pellet.
3, according to the manufacture method of the described ethane vinyl acetate foaming shoes material of claim 1, it is characterized in that: this blind rivet is made of aluminium matter or copper heat transfer nail.
4, according to the manufacture method of the described ethane vinyl acetate foaming shoes material of claim 1, it is characterized in that: this blind rivet becomes L type or T type shape.
CN 02132049 2002-09-09 2002-09-09 Producing method for ethane vinyl acetate foaming shoes material Expired - Fee Related CN1236904C (en)

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Application Number Priority Date Filing Date Title
CN 02132049 CN1236904C (en) 2002-09-09 2002-09-09 Producing method for ethane vinyl acetate foaming shoes material

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CN102875884A (en) * 2012-09-24 2013-01-16 吴江市信许塑料鞋用配套有限公司 Preparation method for ultralight antibacterial deodorant sole material
CN102850606A (en) * 2012-09-24 2013-01-02 吴江市信许塑料鞋用配套有限公司 Preparation method of wear-resistant foaming sole material
CN105148494A (en) * 2015-08-04 2015-12-16 江西开辟体育用品有限公司 Boxing fighting gloves and manufacturing method
CN106739056A (en) * 2016-12-19 2017-05-31 东莞市广信知识产权服务有限公司 A kind of shoemaking sole moulding device
CN114228027A (en) * 2021-12-13 2022-03-25 东莞市博发体育用品有限公司 Method for manufacturing cushion containing dynamic massage bubbles

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