CN1621213A - Manufacturing method of foam with air holes - Google Patents
Manufacturing method of foam with air holes Download PDFInfo
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- CN1621213A CN1621213A CN 200310115254 CN200310115254A CN1621213A CN 1621213 A CN1621213 A CN 1621213A CN 200310115254 CN200310115254 CN 200310115254 CN 200310115254 A CN200310115254 A CN 200310115254A CN 1621213 A CN1621213 A CN 1621213A
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Abstract
The making process of foamed body with air permeable holes includes the steps of setting the material to be foamed inside a mold with needles, heating and pressurizing the mold for foaming and cross-linking, cooling the mold and demolding. The foamed body may be further cut to required sizes. Or, the material may be first heated and pressurized inside one first mold to form the initial blank, and then foamed and cross-linked in the second mold with needles to obtain the foamed body with air permeable holes.
Description
Technical field
The present invention relates to a kind of foaming body pad, particularly relate to a kind of manufacture method of foaming body of the tool air-vent that can in the foaming body moulding, just be formed with most air-vents.
Background technology
The general shoe-pad sheet made from polyurethanes (PU) material, after moulding, can form most pores by nature, so good air permeability, the manufacturing cost that but the price of polyurethanes material is expensive, meeting increases the shoe-pad sheet, review and then have the cheap advantage of cost when adopting ethene-vinyl acetate copolymer (EVA) material, therefore in addition but but can't breathe freely, perforate is to improve its gas permeability.As shown in Figure 1, the manufacture method of existing a kind of ethene-vinyl acetate copolymer shoe-pad sheet is to prepare the die shoe 2 that a upper bolster 1 and an end face are concaved with a die cavity 201 earlier, then, should go up, die shoe 1,2 closures, and the stock 3 of an ethene-vinyl acetate copolymer inserted (can adopt overflows presses or shoot mode) in this die cavity 201, treat that this stock 3 is subjected on this, die shoe 1,2 heating, pressurization and finish foaming, after the cross-linking reaction, on being somebody's turn to do, die shoe 1,2 can be mutually away from unlatching, and the stock 3 that reaction is finished can expansion molding be a foaming body 4 outside mould just, then, this foaming body 4 being cutd open sheet sanction type again is most shoe-pad sheets 5, in order to improve the gas permeability of shoe-pad sheet 5, can in the end utilize number solid needle 6 extruding transpierce shoe pads 5 again or utilize number hollow needle 7 excision transpierce shoe pads 5, so that shoe-pad sheet 5 forms most pores 501 that run through, and make shoe-pad sheet 5 have air permeability and good.
Above-mentioned manufacture method still has following disappearance:
When one, utilizing solid needle 6 extruding transpierce shoe pads 5, the real meat part of meeting compacting shoe-pad sheet 5, and shoe-pad sheet 5 is followed the string.
When two, utilizing hollow needle 7 excision transpierce shoe pads 5, the waste material 502 that is excised by hollow needle 7 can't reclaim use again, causes the waste of material.
Three, this stock 3 is to be subjected to these upper and lower die holder 1,2 heating, pressurization and to finish foaming, crosslinked, but when the volume of stock 3, when thickness is big, part reaction the closer to the die cavity inner surface is very fast, and the reaction of the part of convergence central authorities is slower, in order to reach complete reaction, must prolong heat time heating time, expends the energy.
No matter four is to form with solid needle 6 to run through pore 501, or runs through pore 501 with hollow needle 7 formation, these inner ring surfaces that run through pore 501 can pierce through and produce coarse scratch because of extruding, excision, and pass is not complete.
Summary of the invention
A purpose of the present invention is to provide and contains two kinds of blowing agents that are applicable to the differential responses temperature in a kind of stock, and the die unit that cooperates two different heating temperature, and most peckers are set in the second die unit inside, after foam-in-mould is finished, just can on a foaming body, form the manufacture method of the foaming body of most tool air-vents that run through air-vent.
Another object of the present invention, being to provide a kind of utilizes the reaction time can control stock not finish foaming, cross-linking reaction fully in first die unit, and most peckers are set in the second die unit inside, and after the foam-in-mould of second die unit is finished, just can on a foaming body, form the manufacture method of the foaming body of most tool air-vents that run through air-vent.
Another purpose of the present invention is to provide a kind of manufacture method of utilizing single mold just can form the foaming body of most tool air-vents that run through air-vent on a foaming body.
The manufacture method of the foaming body of tool air-vent of the present invention, be to prepare first and second die unit earlier, this first and second die unit respectively has first and second die holder, can produce first and second die cap closed mutually or that separate with this first and second die holder, can form first and second die cavity when closed toward each other, this second die unit has more majority and is attached at the two pecker on one wherein of second die holder and second die cap, and these peckers are applied in second die cavity, and the volume of this second die cavity is greater than first die cavity.Again a stock is inserted in this first die cavity, and immediately to heating of this first die unit and pressurization, and make that stock foams, cross-linking reaction.Be separated from each other unlatching at this first die holder and first die cap, with regard to inflatable moulding one first idiosome, the volume of this first idiosome is greater than first die cavity, still less than second die cavity.When more just idiosome insert in this second die cavity and pierced through by these peckers, and immediately to this heating of second die unit and pressurization, this second mold heated temperature is greater than the heating-up temperature of first mould, and makes just that idiosome foams fully, cross-linking reaction.After foam-in-mould, cross-linking reaction are finished, this second die unit is cooled off, lowers the temperature.At last, when this second die holder and second die cap are separated from each other unlatching, just can obtain one and have the foaming body that majority runs through air-vent.And above-mentioned stock can be selected for use and contain two kinds of blowing agents that are applicable to the differential responses temperature, or control stock with the reaction time and in first die unit, do not finish foaming, cross-linking reaction fully, but in second die unit, continue to finish foaming, cross-linking reaction.In addition, also can with one not the stock of foaming insert one be provided with in the mould of most peckers after, again to this die unit heating and pressurization, when stock foams fully, cross-linking reaction, and after mould cooled off, lowers the temperature, just can be made into one and have the foaming body that majority runs through air-vent, again this foaming body is cutd open sheet sanction type at last.
The manufacture method of the foaming body of tool air-vent of the present invention not only can be produced the product of good air permeability, and more can save the energy, foaming soon and fully, give birth to waste material because of being heated evenly, reacting---etc. effect, can reach the purpose of invention really.
The present invention is described in detail below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the manufacturing process schematic diagram of existing a kind of ethene-vinyl acetate copolymer shoe-pad sheet.
Fig. 2 is the flow chart of the present invention's first preferred embodiment.
Fig. 3 is the phase I foaming flow chart of the above-mentioned preferred embodiment of the present invention.
Fig. 4 is the second stage foaming flow chart of the above-mentioned preferred embodiment of the present invention.
Fig. 5 is that the foaming body of the above-mentioned preferred embodiment of the present invention cuts open the shaping schematic view of sheet sanction type for number shoe-pad sheet.
Fig. 6 is the flow chart of the present invention's second preferred embodiment.
Fig. 7 is the flow chart of the present invention's the 3rd preferred embodiment.
The specific embodiment
For convenience of description, following embodiment, components identical is represented with identical label.
Consult Fig. 2, Fig. 3 and Fig. 4, manufacture method first preferred embodiment of the foaming body of tool air-vent of the present invention comprises the following steps:
Step 1: preparation one first and second die unit 10,20.This first and second die unit 10,20 respectively has first and second die cap 12,22 that first and second die holder 11,21, can be closed mutually with this first and second die holder 11,21 or separates, and can form first and second die cavity 13,24 when closed each other.This second die unit 20 has more majority and is installed in pecker 23 on second die cap, the 22 1 mould end faces 221, and these peckers 23 can be extended on these second die holder, 21 1 mould bottom surfaces 211 and are applied in second die cavity 24 by this mould end face 221, and this mould bottom surface 211 is concaved with the shrinkage pool 212 that majority can embed the location for pecker 23, and the volume of this second die cavity 24 is greater than first die cavity 13.
Step 2: as shown in Figure 3, a stock 100 is inserted in this first die unit 10, this stock 100 contains two kinds of first and second blowing agent I, II (Foaming Agent) of being applicable to the differential responses temperature.In the present embodiment, these stock 100 Main Ingredients and Appearances are ethene-vinyl acetate copolymer.
Step 3: to this 10 heating of first die unit and pressurization, when arriving the reaction temperature of this first blowing agent I, the first blowing agent I in this stock 100 will foam, cross-linking reaction, at this moment, the temperature of first die unit 10 still is not enough to touch the second blowing agent II, so second blowing agent II unreacted still.
Step 4: when the first blowing agent I in the stock 100 has finished foaming, cross-linking reaction, can drive first die unit 10 opens, just can in first die cavity 13, jump out and have the first idiosome 200 of a predetermined expansion multiplying power, just the volume of idiosome 200 is greater than first die cavity 13, still less than second die cavity 24.
Step 5: as shown in Figure 4, before this still uncolled curing of idiosome 200 just, to be somebody's turn to do first idiosome 200 immediately again and be set on the mould bottom surface 211 of second die holder 21, and it is closed to drive 20 generations of second die unit, the first idiosome 200 that is installed with in second die cavity 24 can be pierced through by these peckers 23.
Step 6: to this 20 heating of second die unit and pressurization, when arriving the reaction temperature of this second blowing agent II, the second blowing agent II will foam in mould, cross-linking reaction.After above-mentioned first idiosome 200 produces foaming, cross-linking reaction effect, can expand and be full of whole second die cavity 24 gradually.
Step 7: after treating that this first idiosome 200 has been finished foaming, cross-linking reaction in mould, can cool off, lower the temperature this second die unit 20 again, and make the first idiosome 200 after the expansion obtain typing.
Step 8: drive this second die unit 20 and open, and make these peckers 23 away from sub second die holder 21 time, just can be made into one and have the foaming body 300 that majority runs through air-vent 310 with second die cap 22.
As shown in Figure 5, after again this foaming body 300 being cutd open sheet sanction type, can be made into the shoe-pad sheet 400 that majority has air-vent 410.
Via above explanation, can again advantage of the present invention be summarized as follows:
One, these peckers 23 of the present invention are before just idiosome 200 begins foaming, cross-linking reaction, just run through this idiosome 200 just, so after these foaming body 300 foaming, crosslinked the finishing, will be formed with naturally and run through air-vent 310, do not need to carry out again perforate processing fully, can not produce waste material yet because of perforate processing.
Two, air-vent 310 of the present invention is to form in the process of foaming, cross-linking reaction at this first idiosome 200, so the hole wall of air-vent 310 can form an epithelium top layer by nature, can make these air-vents 310 produce preferable structural strength, and be easy to keep pass, in order to circulation of air.
Three, utilize these peckers 23 to extend to second die holder 21 and when running through just idiosome 200 by second die cap 22, the heating-up temperature of second die holder 21, second die cap 22 can conduct to the inside of idiosome 24 just by these peckers 23, even just idiosome 200 has bigger volume, thickness, then just the reaction of idiosome 200 is fast, the reaction time short, relatively also saves the energy.
Four, utilize these peckers 23 to run through the effect of idiosome 200 just, can make being heated evenly of first idiosome 200, foaming, cross-linking reaction complete, the rerum natura of the foaming body 300 after the foaming is more even.
Again as shown in Figure 6, the manufacture method of second embodiment of the invention includes the following step: (A) prepare first and second die unit identical with first embodiment.(B) stock is inserted in this first die unit, only contain a kind of blowing agent in this stock.(C),, impel stock not finish foaming, cross-linking reaction fully when stock has arrived reaction temperature and controlled the time of reacting to this heating of first die unit and pressurization.(D) this first die unit is opened, just can be mould outside the incomplete idiosome just of expansion molding one foaming, the volume of this first idiosome is greater than first die cavity, still less than second die cavity.(E) insert the first idiosome of uncolled curing in second die unit and pierced through by these peckers.(F), and make first idiosome in mould, continue to finish foaming, cross-linking reaction to this heating of second die unit and pressurization.(G) after idiosome was finished foaming, cross-linking reaction in mould originally, can cool off, lower the temperature this second die unit again.(H) this second die unit is opened, just can be obtained one and have the foaming body that majority runs through air-vent.And this foaming body also can cut into most shoe-pad sheets through cuing open sheet again.Briefly, second embodiment of the invention is to utilize the time control stock of reaction not finish foaming, cross-linking reaction fully in first die unit, and continues to finish foaming, cross-linking reaction in the inside of second die unit.
And for example shown in Figure 7, the manufacture method of third embodiment of the invention includes the following step: (A) preparation one die unit, this die unit inside has most peckers.(B) insert in this die unit without the stock (can be the liquid raw material of solid-state raw material or fusion) of foaming one, and pierced through by these peckers.(C), and make stock in mould, finish foaming, cross-linking reaction to this die unit heating and pressurization.(D) when stock is finished foaming, cross-linking reaction in mould after, can cool off, lower the temperature this die unit again.(E) this die unit is opened, just can be obtained one and have the foaming body that majority runs through air-vent.(F) this foaming body is cutd open sheet sanction type.So utilize single die unit, also can be made into foaming body with air-vent with most peckers.
What deserves to be mentioned is, stock of the present invention is not limited to ethene-vinyl acetate copolymer, also can use styrene butadiene ribber (Styrene Butadiene Rubber, be called for short SBR) or acrylonitrile butadiene rubber (AcrylonitrileButadiene Rubber, be called for short ABR) composition of deciding, in addition, though the present invention explains with the application of shoe-pad sheet, but also can be applicable to other article, as the shoulder pad of the cushion pad in the knapsack shoulder belt, dress ornament, the filler of knee-pad---or the like.
Claims (5)
1, a kind of manufacture method of foaming body of tool air-vent is characterized in that comprising the following steps:
(A) preparation one first and second die unit, this first and second die unit respectively has first and second die holder, can produce first and second die cap closed mutually or that separate with this first and second die holder, can form first and second die cavity when closed toward each other, this second die unit has more majority and is attached at the two pecker on one wherein of second die holder and second die cap, and these peckers are applied in second die cavity, and the volume of this second die cavity is greater than first die cavity;
(B) stock is inserted in this first die cavity, this stock contains two kinds of blowing agents that are applicable to the differential responses temperature;
(C), and make that wherein a kind of blowing agent foams, cross-linking reaction to heating of this first die unit and pressurization;
(D) this first die unit is opened, just can be mould outside the first idiosome of expansion molding one, at the beginning of this volume of idiosome greater than first die cavity, but less than second die cavity;
(E) just idiosome is inserted in second die cavity and pierced through by these peckers;
(F) to heating of this second die unit and pressurization, this second mold heated temperature is greater than first mould, and makes that another kind of blowing agent foams, cross-linking reaction;
(G) after this first idiosome is finished foaming, cross-linking reaction in mould, can cool off, lower the temperature this second die unit again;
(H) this second die unit is opened, and just can obtain one and have the foaming body that majority runs through air-vent.
2, the manufacture method of the foaming body of tool air-vent as claimed in claim 1 is characterized in that: more comprise one in the later step (I) of step (H), this step (I) is this foaming body to be cutd open sheet sanction type.
3, a kind of manufacture method of foaming body of tool air-vent is characterized in that comprising the following steps:
(A) preparation one first and second die unit, this first and second die unit respectively has first and second die holder, can produce first and second die cap closed mutually or that separate with this first and second die holder, can form first and second die cavity when closed toward each other, this second die unit has more majority and is attached at the two pecker on one wherein of second die holder and second die cap, and these peckers are applied in second die cavity, and the volume of this second die cavity is greater than first die cavity;
(B) stock is inserted in this first die cavity, only contain a kind of blowing agent in this stock;
(C) to this heating of first die unit and pressurization, and make stock arrive reaction temperature, after the process scheduled time, stock is not finished foaming, cross-linking reaction fully;
(D) this first die unit is opened, can be mould outside the first idiosome of expansion molding one, this just the volume of idiosome greater than first die cavity, but less than second die cavity;
(E) just idiosome is inserted in second die cavity and pierced through by these peckers;
(F), and make idiosome continuation just in mould, finish foaming, cross-linking reaction to this heating of second die unit and pressurization;
(G) after this first idiosome is finished foaming, cross-linking reaction in mould, can cool off, lower the temperature this second die unit again;
(H) this second die unit is opened, and just can obtain one and have the foaming body that majority runs through air-vent.
4, the manufacture method of the foaming body of tool air-vent as claimed in claim 3 is characterized in that: more comprise one in the later step (I) of step (H), this step (I) is that this foaming body is cutd open sheet sanction type.
5, a kind of manufacture method of foaming body of tool air-vent is characterized in that comprising the following steps:
(A) preparation one die unit, this die unit inside has most peckers;
(B) insert in this die unit without the stock of foaming one, and pierced through by these peckers;
(C), and make stock in mould, finish foaming, cross-linking reaction to this die unit heating and pressurization;
(D) when stock is finished foaming, cross-linking reaction in mould after, can cool off, lower the temperature this die unit again;
(E) this die unit is opened, just can be obtained one and have the foaming body that majority runs through air-vent;
(F) this foaming body is cutd open sheet sanction type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200310115254XA CN100346956C (en) | 2003-11-26 | 2003-11-26 | Manufacturing method of foam with air holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200310115254XA CN100346956C (en) | 2003-11-26 | 2003-11-26 | Manufacturing method of foam with air holes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1621213A true CN1621213A (en) | 2005-06-01 |
| CN100346956C CN100346956C (en) | 2007-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200310115254XA Expired - Fee Related CN100346956C (en) | 2003-11-26 | 2003-11-26 | Manufacturing method of foam with air holes |
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| Country | Link |
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| CN (1) | CN100346956C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189730A (en) * | 2010-03-11 | 2011-09-21 | 刘坤钟 | Manufacturing method of foaming synthetic leather with embossed pattern |
| CN102189731A (en) * | 2010-03-11 | 2011-09-21 | 刘坤钟 | Manufacturing method of foaming synthetic leather |
| CN110000982A (en) * | 2019-03-21 | 2019-07-12 | 福建钜闽机械有限公司 | A kind of safe handling method of Novel EVA secondary frothing forming machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04339637A (en) * | 1990-08-23 | 1992-11-26 | Jsp Corp | Manufacture of in-mold foam molded body |
| JP3596927B2 (en) * | 1994-09-19 | 2004-12-02 | 株式会社カネカ | Method for producing foam molded article having design pattern |
| JP2002018882A (en) * | 2000-07-11 | 2002-01-22 | Seki Seisakusho:Kk | Method and equipment for manufacturing plastic molded article having foamed resin layer |
| CN1413847A (en) * | 2001-10-26 | 2003-04-30 | 参联国际贸易有限公司 | Method for manufacturing solid tyre which with foaming material in it and its device |
| CN1442286A (en) * | 2002-03-01 | 2003-09-17 | 黄淑如 | Centrifugal type filling foaming method of foamed tyre |
| CN1207135C (en) * | 2003-03-21 | 2005-06-22 | 湖北大学 | Method for making microporous foamed engineering plastic by mould pressing |
| KR100908599B1 (en) * | 2007-02-23 | 2009-07-21 | 정상근 | Socket box with semi-punched fixing piece and its manufacturing method |
-
2003
- 2003-11-26 CN CNB200310115254XA patent/CN100346956C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102189730A (en) * | 2010-03-11 | 2011-09-21 | 刘坤钟 | Manufacturing method of foaming synthetic leather with embossed pattern |
| CN102189731A (en) * | 2010-03-11 | 2011-09-21 | 刘坤钟 | Manufacturing method of foaming synthetic leather |
| CN110000982A (en) * | 2019-03-21 | 2019-07-12 | 福建钜闽机械有限公司 | A kind of safe handling method of Novel EVA secondary frothing forming machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100346956C (en) | 2007-11-07 |
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Granted publication date: 20071107 Termination date: 20091228 |