CN1566185A - Ethylene-vinyl acetates film for crosslink foaming , parts of shoes using the same and making method thereof - Google Patents

Abstract

The invention relates to an ethylene-vinyl acetates film for crosslink foaming , parts of shoes using the same and making method thereof, the EVA category film for the crosslinking foaming has a height of 0.01-2mm, preferably 0.1-1.0mm.

Description

Crosslinked foaming is with ethane-acetic acid ethyenyl ester class film and utilize the footwear parts and the method for making thereof of this film

Technical field

The present invention relates to a kind of crosslinked foaming with ethane-acetic acid ethyenyl ester (hereinafter to be referred as EVA) class film and utilize in the shoe-pad, footwear of this film in the end, the footwear end/the one-piece type sole of footwear outer bottom and upper of a shoe or upper of a shoe be with footwear parts such as members, ((general diameter is 3.0～4.0mm, highly is 4～5.0mm) different described crosslinked foaming to be generally laminar or disk shape more than 2.5～3.0mm) with EVA class film and the certain thickness that used in the past, it has 0.01～2mm, is preferably 0.1～1.0mm thickness; The footwear parts that obtain by the manufacture method of using above-mentioned film can make each layer of a molding and/or the tone and the outward appearance variation at each position, can classify simultaneously design and produce color harmony rerum natura between the different sites is so that answer degree and amount of deflection/degree of crook etc. are suitable for the difference in functionality at each position after many mechanical properties such as density, hardness, wear intensity, elasticity, the compression.

Background technology

Use is later through the processed goods manufacturing upper of a shoe parts in the past behind all multiple operation as the expansion-molded article or the foaming of main raw with the EVA basic compound, the end in the footwear, the footwear outer bottom, in shoe-pad or the footwear end/during footwear parts such as the one-piece type sole of footwear outer bottom, use and have the above thickness of 2.5mm usually and have available touch, naked eyes determine its surperficial anchor easily, and can not carry out the hard sheet shape or the disk shape of the manufacturing procedure of materials behavior shown in the present, the crosslinked foaming of lamella shape EVA basic compound, and reshape (2 operations) through overdraft foaming and molding or injection expansion molding operation (1 operation) or with its compression and make the footwear parts.

Illustrate with reference to Fig. 1 and to have utilized the footwear parts that are used in the in the past laminar crosslinked foaming in making to reshape operation (2 operations) with the compression of EVA basic compound or injection expansion molding operation (1 operation) and compression.S represents step among Fig. 1.

Foaming and molding operation (1 operation)

(1) compression foaming type forming process

A1) select material and metering (SA1) according to the volume of volume, rerum natura, frothing percentage or the mould hole part of footwear parts etc.

Above-mentioned materials is the cut-out thing or the disk shape EVA basic compound of laminar EVA basic compound.

B1) expansion ratio when the volume of having considered foam molding and the foaming of its material-mix thing and actual expansible shape is dwindled in the hole of compression molding with the open and close type mould of certain ratio design adding above-mentioned materials (SB1).

C1) the above-mentioned mould certain hour (SC1) of heating

In certain temperature (common 140～180 ℃) down during heating and pressurizing certain hour (about 6～9 minutes kinds), (the N for example because gas that in the process that whipping agent decomposes, is produced ₂, CO ₂, CO, NH ₃) wait and can form cellularstructure, and the viscosity of material of mould inside descends, thus reach foamable state.

D1) releasing is also opened mould (SD1) rapidly to the pressurization of above-mentioned mould

At this moment the volume of expanded foamed molding with the frothing percentage of shaped material matching design and mould inside goods portion shape promptly with the goods reduced volume in hole, the matching design of EVA material and the purposes of molding and difference more or less, but in general, as 2 compressions final footwear parts of final molding form about about 120～140% when reshaping with middle molding, its desired plasticity and before 2 compressions reshape operation and the suitable recompression ratio benchmark of the rerum natura variation of the molding that is changed afterwards etc. and design and when having considered that 2 compressions reshape operation the hole portion shape of the mould of the volume-diminished certain ratio designing institute of foam molding making and the decisions such as frothing percentage of material.

On the contrary, after the EVA sponge that above-mentioned 1 compression foam molding is configured as the large-sized sheet material shape is tabular, block in order to be processed into different separately footwear component shape, surface/shape grinding operation, carry out operation then with similar molding or other material adhesive etc., after this use as final footwear parts, or the compression of above-mentioned 1 compression foam molding 2 times is not reshaped and when finally the footwear parts use, because of the many sizes of molding and rerum natura all play pendulum, so:

E1) above-mentioned molding is cooled off certain hour (SE1) in the space of having removed pressure

This operation is structure and the shape for the fine cell of the intravital discrete of stable formation (cell), and for many stable in properties such as the volume that makes molding, rerum natura on the standard size of parts or finished product.

For above-mentioned E1) for the molding that obtains in the operation, it can use as the footwear parts after the additional cut-outs such as position that form beyond the product position, severing, bonding etc. following process operation through the mould structure when being shaped, if not it can be used as compression in 2 operations of conduct of following explanation reshape operation needed in the middle of molding use.

When middle molding like this is used for compression and reshapes among the operation, have 60%～70% density of final molding or 120～140% volume usually.

At above-mentioned C1)～D1) operation in, in order to add material, to improve mould and close back flowability and the plasticity of material in mould, as an example wherein, sometimes the product shaping position in the compression foaming and molding machine is optionally maintained vacuum state, this will help improving compress in the past had in the foaming and molding method, during heating and pressurizing in mould the shortcomings such as limitation of plasticity when the inhomogeneous mobile property of material and the foaming that thereupon produces.

(2) foam-injection formula forming process

Foam-injection formula forming process is mainly used disk shape EVA basic compound and is made through following foam-injection formula forming process shown in Figure 1.

A2) select material and metering (SA2) according to volume, rerum natura, the frothing percentage of footwear parts

B2) above-mentioned materials in material injecting machine by after the mechanical softening fusion, the material in the mould injects the path and joins mould hole (SB2).

Later operation is carried out according to following SC2～SE2 operation usually, but Special Circumstances are arranged also, just, above-mentioned materials in material injecting machine after the mechanical softening fusion, again with its cooling back demoulding (SB1) so that after being injected into the low temperature mould material be unlikely crosslinked foaming, and then the SB1 of compressed foaming type forming process～SE1 operation, but this example is uncommon.

C2) the above-mentioned mould certain hour (SC2) of heating

D2) releasing is also opened mould (SD2) rapidly to the pressurization of above-mentioned mould

E2) above-mentioned molding is cooled off certain hour (SE2) in the space of having removed pressure

Identical for the detailed description of these operations with the explanation of compressing foaming type forming process D1 and E1 in above-mentioned (1).

Compression reshapes operation (2 operations)

The compression of heating/cooling die formula reshapes operation

This operation is to use the operation of making desirable final molding by the middle molding of above-mentioned compression or the manufacturing of injection expansion molding operation, and it is to carry out in such a way.

F1) the middle molding of 120%～140% volume that is configured as above-mentioned final shaping thing is forced to join (SF1) in the mould

The hole of above-mentioned mould is to suit to design according to the size of final molding and shape, and mould is normally made with the aluminum alloy materials of heat conductivity excellence.

G1) close above-mentioned mould and apply certain temperature and pressure shaping (SG1) afterwards.

H1) demoulding obtains final molding (SH1) after the above-mentioned mould of cooling.

Above-mentioned F1)～H1) operation is that the compression of heating/cooling die formula reshapes operation, this operation mainly be in making footwear in the end, footwear outer bottom, the footwear end/during the thick product of many sizes of final moldinies such as the one-piece type sole of footwear outer bottom, shoe-pad or according to user's mechanical means environment and degree according to qualifications, combine with above-mentioned compression foaming and molding, injecting type foaming and molding etc. and be extensive use of as the typical method that reshapes for 2 times.

In addition, thin and to the forming accuracy of molding under the situation of upper of a shoe with parts or shoe-pad etc. when less demanding, by cooling or low temperature, the die type compression reshapes operation, carries out following manufacturing in the size of molding.

(2) compression of cooling/low temperature die type reshapes operation

F2) after the mould outside is with molding heating in the middle of above-mentioned, join in the hole of opening wide shape cooling/low temperature mould (SF2).

G2) center by above-mentioned mould applies certain pressure and cooling forming above-mentioned materials (SG2).

H2) pressure relief and make the molding demoulding (SH2) of cooling/cryogenic forming is used as final molding.

Through the crosslinked foaming EVA molding that 1 time, 2 times above-mentioned operations are made, make 1 molding because of using hard thin slice or disk, so there is following problem.

The first, sole requires different functions with parts on its different position, this a lot of mechanics of human motion research and the test by in the past be confirmed.As so general example, heel position, the sole outside, opposing hardness, the soft rerum natura of the pressure that it is desirable to walk, the driving pin is produced when landing at first, be used to support the mechanically resistant material at arc position or be used to absorb the bending of forebody and buffered material etc., the arrangement of on each position, the mechanical properties of differing materials being classified effectively with being absorbed in easily.

But the EVA molding of shape etc. must use each several part was shaped separately so that the method for rejoining after the rerum natura difference separately in order to satisfy above-mentioned requirement in the past.

As shown in FIG. 2, can pass through S1A～S5A and S1B～S5B fabrication portion molding A, B, again they are made up mutually (S6AB) 1 foam molding bonding or that handle obtains and make up (S3AB) mutually from compression or foaming and molding operation (SA3 and S3B), at last its compression is reshaped (S4AB) and obtain final molding.

But such previous methods, its manufacturing process is miscellaneous, manufacturing expense is high and owing to the exposure at bonding position, the infringement between the boudary portion, the bonding problem that reduced by the integraty of the outward appearance of bonding parts and function and commodity of occurring such as bad, will realize on a molding or parts therefore that various design will exist much to limit to.

The second, when using in the past material that variation is carried out in the color harmony appearance design, must make respectively combines behind the each several part engage or adopt on the lip-deep different sites of molding, smear, methods such as printing solve.But this will cause the scope of application of its design and the technique of expression limitation of design, and the problem of its weather resistance and productivity decline, expense increase etc.

The 3rd, when designing, manufacturing rerum natura on each position in order to improve function such as wearability, buffering absorptivity, stability and comfortable feel and classifying, if manufacturing process and the joint operation by each several part is not shaped then do not have the problem that has 2 above tones or rerum natura on parts.

The 4th, the low window member of the EVA material that is shaped as in the past crosslinked foaming and during with the end in the footwear and the integrated making crosslinked foaming of sole molding, the range of choice of material is narrow and can't carry out sufficient functional differentiation to the variant position in each molding.For example, be difficult to reshape operation, on a single finished product, realize lightweight, wearability and multipleization of different sites density etc. of final finished simultaneously by above-mentioned 1 foaming and molding operation or 2 compressions.

The 5th, as a result, under the situation of using laminar or disk shape crosslinked foaming EVA basic compound in the past, cause making unit price by the increase of manufacturing process of appending and mould number etc. and uprise, and be difficult to realize the variation of each position rerum natura of molding, can't realize the variation that designs.

The 6th, particularly under the situation of using lamellar material, inhomogeneous and its size deviation in surface is more than certain thickness, usually deviation (the big place of 2.5mm～3.0mm) for example, on the footwear parts position during, be difficult to prevent the mutual infringement of tone/rerum natura and be difficult to ensure quality product reproducibility and the consistency that is used to produce in enormous quantities through above-mentioned 1 foaming and molding operation or 2 compression molding operations.

This is because consider and by foaming or compression molding described shape is carried out accurate control so that meet the standard of product from the angle that the X-Y-Z shape shaft of above-mentioned lamellar material must be controlled fully, and this is in the vivid characteristic of material in the past and utilize that the utmost point is difficult to realize on its characteristic of forming process.

The 7th, above-mentioned 1 compression foam molding is configured as after the EVA sponge of large-sized sheet material shape it is blocked and carries out surface/shape grinding operation, and then when carrying out using with the operation of molding of the same race or other material adhesive etc. and as final footwear parts, be accompanied by above-mentionedly block, rubbish output that grinding operation produces is very serious level.

Summary of the invention

The present invention proposes in order to solve the above problems, one of its purpose is to provide a kind of operation of being oversimplified, wherein, make 0.01～2.0mm thickness with crosslinked foaming EVA basic compound, it is desirable to the film of 0.1～1.0mm thickness, and, preferential manufacturing reproduces EVA foam molding rerum natura in the same manner for can being similar to, the footwear parts of producing usefulness in enormous quantities, adaptation is joining before and after the mould inside and the image of continually varying material changes along with the carrying out process respectively of above-mentioned each operation, can the single molding on single foam molding in, outer different sites or all going up are found more than one rerum natura or tone.

Two of the object of the invention is to provide a kind of manufacture method, the operation that utilization is oversimplified, by the required rerum natura of graduation design/manufacturings on the footwear parts that privileged site contacted of pin part, the variation of while many mechanical properties of realization on a final molding and improve functional, durability of product and stability.

Three of the object of the invention is, solve limitation in the past and on the different sites of footwear parts, realize various color harmony design effectively, and simplify its decoration process, improve functions of components according to different uses simultaneously, thereby improve function and the value and the commodity of final article of footwear.

Four of the object of the invention is, a kind of operation by more simplifying is provided, had wearability, impact absorbency than more effectively produce in the past, prevent bending, improve pin comfort, improve functional member manufacturing method such as supporting power.

Five of the object of the invention is, provide a kind of, with the single foaming and molding operation of simplifying be shaped in the past the footwear end and the incorporate form of sole or a molding of form separately, and realize the variation design of tone, the manufacture method that the graduation of different sites rerum natura is formed in the molding can realizing simultaneously being difficult to realize with once integral type crosslinked foaming forming process with in the past manufacture method.

Six of the object of the invention is, provides a kind of by footwear parts manufacturing process being simplified and reduce required mould number, and can reduce the monovalent manufacture method of manufacturing of high professional qualification footwear.

Seven of the object of the invention is, a kind of parts forming process that reliability is arranged by simplification is provided, reduce the fraction defective when producing in batches and easily design high professional qualification footwear required many rerum naturas and function, make the manufacture method of the product quality variance homogenizing between each parts simultaneously.

Eight of the object of the invention is, when different rerum naturas on each positions of a kind of plan and suitable footwear parts, design are provided, to being used to find the parts of this point and the manufacture method that operation is controlled easily.

Nine of the object of the invention is, by easily to the different rerum naturas at each position of above-mentioned footwear parts, the manufacture method of planning, being suitable for and controlling, provide a kind of, thereby and be shaped intravital different sites size as thin as a wafer or the method in the parts of the mixed design in its thin position and the thick position shape that in the past was difficult to be shaped with one of parts etc. with single molding with the generally held standard of in the past technical field applicable to shoe-pad, upper of a shoe or upper of a shoe not only applicable in the thick parts of molding equidimensions such as the end in the footwear.

Ten of the object of the invention is, provides that a kind of to use the foaminess material of EVA resin and other kind simultaneously be the manufacture method of materials such as foaminess rubber-like or thermoplastic resin.

11 of the object of the invention is, a kind of manufacture method that can fundamentally reduce the industrial waste that produces in the above-mentioned course of processing of in the past extensively using is provided.

To achieve these goals, the invention provides a kind of crosslinked foaming EVA class film, wherein, in the EVA based composition, above-mentioned composition is the EVA resinoid, as linking agent use dicumyl peroxide (below, be called for short DCP), use JTR-M as whipping agent, use by TiO as pigment ₂, stearic acid and MgCO ₃, the material that constitutes of ZnO, and manufacture the film shape that thickness is 0.01mm～2.0mm.

In addition, the invention provides a kind of film, wherein, in the EVA based composition, above-mentioned composition is the EVA resinoid, and contains ethylene-butene copolymer and polyisoprene rubber more than 2 kinds, use DCP or TAC as linking agent, use ACDC, use as pigment to be selected from TiO as whipping agent ₂, stearic acid, CaCO ₃, more than one inorganicss among the ZnO constitute a group, and manufacture the film shape that thickness is 0.01mm～2.0mm.

In addition, the invention provides a kind of film, it is characterized in that, above-mentioned composition and staple fibre, fabric, non-woven fabrics, imitation leather, foaminess rubber compound and/or thermoplastic resin composition together are shaped simultaneously through calendering procedure.

In addition, the invention provides a kind of film, it is characterized in that, the thickness of above-mentioned film is 0.1～1.0mm.

In addition, the invention provides a kind of film, it is characterized in that, handle with interior low temperature process at 30～80 degree Celsius during the above-mentioned film of calendaring molding.

In addition, the invention provides a kind of footwear member manufacturing method, is to utilize the method for crosslinked foaming with EVA based composition manufacturing footwear parts, it is characterized in that comprise: a1) blocking thickness is the block operation of the crosslinked foaming of 0.01～2mm with the basic compound film; B1) stacked-clustered operation of folding and/or make up in the mould cavitation layer through the above-mentioned film that blocks operation; C1) cover the lid of above-mentioned mould, the heating of heating, pressurizeing-pressurization operation, and d1) remove the pressurization of above-mentioned mould after, remove the foaming and molding operation that lid foams.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, the thickness of above-mentioned eva film is 0.1～1.0mm.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, when making above-mentioned film, perhaps to mixing staple fibre of EVA basic compound etc. or one bonding and molding fabric, non-woven fabrics, imitation leather, foaminess rubber stock and/or thermoplastic resin composition and improve the rerum natura characteristic and carry out variation.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, and at above-mentioned b1) film that uses in stacked-clustered operation together uses fabric and/or non-woven fabrics, and is natural/the imitation leather class, rubber-like.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that having: in the non-woven fabrics of the mixing shaping water-soluble polymer of above-mentioned eva film or film shaped operation; Above-mentioned shaping thing is processed into the operation of band shape or wire; Weave or the operation of weaving and the operation of removing with above-mentioned water-soluble polymer dissolving and from fabric with above-mentioned machining object, by this method, the rerum natura characteristic of above-mentioned film improves and variation.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, use 2 the above films, and their rerum natura and/or tones each other are different.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, use 2 the above films, and be the film that is printed with rule, random pattern and/or literal more than one of them.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, above-mentioned film is to be equipped with the more than one film that a plurality of holes or cut-out have a plurality of holes with variform.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, stacked and/or builtup film, make at above-mentioned b1) finish parts in stacked-clustered operation after, the bow portion at the inside line at pin rear portion or pin middle part compares with other position by hardization so that increase anchorage force, and the buffering absorbing power of the outside at pin rear portion or pin forward middle part or elasticity, restoring force are bigger relatively than above-mentioned position.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, stacked and/or be combined in above-mentioned b1) finish after the parts in stacked-clustered operation, make the hardness of the part that the position with the toe bending joins big, and make the rerum natura characteristic differenceization of the intravital different sites of single shaping so that its buffering absorbing power is big and make bow portion have anchorage force.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, at above-mentioned b1) in stacked-clustered operation, to use cooling forming be laminar and/or disk shape or foaming before the crosslinked foaming of state with EVA basic compound material with above-mentioned film is together stacked and/or make up.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, be used in above-mentioned b1) being to use more than in the film in stacked-clustered operation carry out stacked through the crosslinked foaming that is shaped in advance with EVA basic compound preform as required and/or make up.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that above-mentioned preform is a three-dimensional shape.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, during stacked above-mentioned film, another film of pigment that is combined with the color harmony visual effect different with stacked film or additive is inserted into the top or back or the side of stacked thin film layer.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, the also additional operation that is included in behind inner insert structure body of stacked film and the foaming and molding again its removal is so that form the spatial operation in stacked inside.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, an also additional film of the above-mentioned foamed process of process or the molding of comprising put in the mould of finishing product usefulness the compression of compressing/reshaping and reshaped operation.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, also comprise film or molding through above-mentioned foamed process are put in the mould of finishing product usefulness the operation of compressing/reshaping.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, also comprise: bb) at above-mentioned b1) in stacked-clustered operation, in certain position and/or layer, mix crosslinked foaming with foaminess thermoplastic resin and/or elastomeric material beyond the EVA basic compound and carry out stacked/or hybrid laminated-clustered operation of making up; Ee) will be through above-mentioned e1) compression reshape operation, by the joint operation of the footwear components bonding of different mutually material formings.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, be used in above-mentioned bb) material in hybrid laminated-clustered operation is positioned at the orlop in mould hole.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, in the footwear parts through the aforesaid method manufacturing, use EVA basic compound preform by integrally formed through the crosslinked foaming that is shaped in advance.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, above-mentioned preform is a three-dimensional shape.

In addition, the invention provides a kind of footwear member manufacturing method, it is characterized in that, in the footwear parts by above-mentioned manufacture method manufacturing, below top, the side of its sole etc. outermost layer or be perforated or layer that severing becomes definite shape the layer with certain tone, pattern and/or literal of one deck is integrally formed down with it, and be perforated or intercepted layer the back side and anterior layer make a distinction and expose externally.

In addition, the invention provides a kind of footwear parts, make by aforesaid method.

Description of drawings

Fig. 1 be expression utilize in the past thin slice shape or 1,2 forming process figure of the manufacturing processed of the footwear parts of disc EVA basic compound;

Fig. 2 be expression utilize in the past thin slice shape or the process picture sheet of the manufacturing processed of the footwear parts that constitute by rerum natura or mutually different 2 parts of tone of disc EVA basic compound manufacturing;

Fig. 3 is that expression utilizes film shape EVA basic compound of the present invention to make the signal process picture sheet of the process of footwear parts;

Fig. 4 is that expression utilizes the material that utilizes film shape EVA basic compound and be shaped in advance of the present invention to make the signal process picture sheet of the process of footwear parts;

Fig. 5 is the sectional view of footwear parts that utilizes the film shape EVA basic compound manufacturing of embodiments of the invention 1;

Fig. 6 a～6b is the sectional view and the enforcement figure of footwear parts that utilizes the film shape EVA basic compound manufacturing of the different color harmony rerum naturas of having of embodiments of the invention 2;

Fig. 7 is the sectional view of shoe-pad that utilizes the film shape EVA basic compound manufacturing of the different color harmony rerum naturas of having of embodiments of the invention 3.

Fig. 8 a, 8b are the sectional views of footwear parts that utilizes the preform manufacturing of the film shape EVA basic compound of the embodiment of the invention 4 and waveform.

Fig. 9 utilizes the EVA resin film of the embodiment of the invention 5 and foaminess rubber together to make the sectional view of the footwear parts at the end and footwear outer bottom in the footwear.

Figure 10 a, 10b, 10c utilize the film shape EVA basic compound that is perforated and prints of the embodiment of the invention 6 or the rear view of the footwear parts that rubber is made.

Figure 11 a and 11b are the illustration figure of the footwear parts of embodiments of the invention 7.

Figure 12 is the sectional view of expression embodiments of the invention 8.

Figure 13 a～13d is the sectional view of Production Example of the footwear parts of expression embodiments of the invention 9.

Figure 14 a～14c is the sectional view of Production Example of the footwear parts of expression embodiments of the invention 10.

Figure 15 a～15c is the sectional view of Production Example of the footwear parts of expression embodiments of the invention 11.

Figure 16 a～16c is the sectional view of Production Example of the footwear parts of expression embodiments of the invention 12.

Figure 17 a and 17b are the sectional views of Production Example of the footwear parts of expression embodiments of the invention 13.

Figure 18 a and 18b are the sectional views of Production Example of the footwear parts of expression embodiments of the invention 14.Figure 19 a～19d is the sectional view of Production Example of the footwear parts of expression embodiments of the invention 15.

Embodiment

Describe embodiment of ideal of the present invention with reference to the accompanying drawings in detail.

At first should be noted that in the accompanying drawings and all use the prosign mark as far as possible for identical textural factor or parts etc.Omitted in the declarative procedure of the present invention for the specifying of relevant known function or structure division, so that make aim of the present invention clearer.

As crosslinked foaming EVA molding shaped material of the present invention, thickness is the composed as follows of 0.01～2mm film of being preferably 0.1～1.0mm.Promptly, to have according to the purposes of user's variant production and the VA (vinyl acetate content) that function is selected and the EVA resin (MI3.0g/mm in following example of MI (melt indexg/mm) numerical value, VA 22～23%) as main component, and add characteristic and the requirements to satisfy the finished product and manufacturing process such as linking agent, whipping agent, pigment, promotor, additive and rubber-like therein.

An example that exemplifies wherein is as follows.

Example 1

The EVA basic compound (melt index 3.0g/10min, VA content22～23wt%); 100phr

DCP purity 98% as linking agent; 0.66phr

As whipping agent is JTR-M; 1phr

Stearic acid; 1phr

ZnO；1phr

75Ca-St；1phr

MgCO ₃；8phr

TiO ₂；1phr

Example 2

EVA basic compound (melt index 3.0g/10min, VA content 22～23wt%); 50phr

Ethene-butylene interpolymer 1 (Tafmer940); 15phr

Ethene-butylene interpolymer 2 (Tafmer610); 30phr

Polyisoprene rubber; 5phr

DCP purity 98% as linking agent; 0.78phr

ACDC as whipping agent; 2phr

TAC as whipping agent; 0.2phr

Stearic acid; 1phr

ZnO；3phr

CaCO ₃；5phr

As pigment TiO ₂4.5phr

The following describes the embodiment of crosslinked foaming of the present invention with EVA class film, crosslinked foaming of the present invention can produce by thin type calendaring molding operation most effectively with EVA class film, and the manufacturing process that particularly can be connected the crosslinked foaming EVA class thin slice in the past that is combined with above-mentioned materials or disk shape material is terminal and make.

Use can be considered the different qualities of each material effectively and carry out the banbury mixers etc. of the mixing operation that cooperatively interacts between the effective starting material under the environment of producing in batches, with above-mentioned thin-film material once mixing after, meet each operation field condition and common open type or the airtight forming roll mixing machine that constitutes by 2 rollers by selected specification, 2 precisions of above-mentioned materials are mixing, add pigment or tone simultaneously and each material is well dispersed in the middle of the starting material with high density dyeing batching or other additive etc.

Crosslinked foaming in the past EVA class thin plate and disk material, only by such operation just fully through above-mentioned each 1 foaming and molding method, promptly foaming and molding methods such as foaming and molding or injection forming are made above-mentioned common crosslinked foaming EVA molding with reference to explanation in compression back normal pressure or the vacuum, but because of the frothing function of above-mentioned materials poor, so if this material is that its inhomogeneous and above-mentioned uneven degree in surface is to use sense of touch easily, visual discrimination be generally 2.5mm～3.0mm, and under the situation of the lamellar material of hardization after the normal temperature cooling, only carry out above-mentioned unlimited shape for several times or airtight shape roll-type repeatedly and cooperate the machine operation can form above-mentioned materials.

On the contrary, under the situation of disk shape material, after mixing with the roll-type cooperation machine that is positioned at above-mentioned cooperation, mixing end with extruding formation method with material forming, make to form the shape of this material through operations such as cooling, cut-out, dryings then, then it is joined in the material injector and can carry out the injecting type foaming and molding.

Under the situation of this material of the present invention, use the roll-type that is positioned at above-mentioned cooperation, mixing operation end to cooperate machine for the embodiment that implements the following stated, its calendaring molding is constituted its material afterwards by the molding shown in this material manufacturing embodiment, use this method to produce the molding that can't make with the form and the foaming and molding method of crosslinked foaming EVA compound-material with foaming and molding in the past, wherein above-mentioned roll-type cooperates the operation after the machine as follows.

After roll-type cooperates machine operation or prepare after carry out, film shape EVA basic compound material list alone becomes shape and uses the calendaring molding operation, perhaps prepare according to the needs of molding and its film shape EVA basic compound and other material such as fabric, non-woven fabrics, imitation leather, foaminess rubber compound, thermoplastic resin composition etc. carried out the one calendaring molding.

After this, alone become the example of shape, make by roll-type to cooperate 4 roll calendars of the material of machine through inverted L shape with calendaring molding as film shape EVA basic compound material list.The main effect of the 3rd, the 4th at this moment last roller is the film of various size of illustrating in this specification sheets that is shaped, so being controlled at the first half of calendaring molding operation to greatest extent is very important in the interval temperature rising that takes place of above-mentioned roller particularly, for the whipping agent that prevents to be dispersed in this thin-film material produces foaming in the course of processing, with the temperature of whole calendaring molding operation be controlled at as far as possible 30～80 ℃ with interior be ideal.This will be according to the kind that is dispersed in the whipping agent in the material, kick off temperature, so that difference with the difference of the forming operation temperature condition of molding foaming and molding etc. and more or less after this.Also have, when temperature is higher than said temperature, in the manufacturing process of film, can foam in early days, and temperature when being lower than said temperature film be cured in early days and can curl or the back operation in fracture takes place or chap.Through the material after the above-mentioned calendaring molding roller in succession through cooling roller, deburring, curl or block to a series of series-operations such as suitable sizes and finish material into film shape.In addition, under the situation of one-piece type calendaring molding, connect materials such as the fabric integrally formed with this thin-film material, non-woven fabrics by the end at stack, composition makes its structure of 2 or 4 help rolls of integrally formed usefulness each other, and colds pressing before and after making it.

Film of the present invention is by precise form, and its thickness is 0.01～2mm, be preferably 0.1～1.0mm, therefore it than common thickness be more than the 2.5mm and can with in sense of touch, visually differentiate the laminar or flaky material of circle of the hard plate shape of its surface inhomogeneity easily and compare, its thickness is very various and thin, and is processed into the degree that is difficult to differentiate with vision and sense of touch its surfaceness equably.

Discrepant film such as hardness and/or tone can manufacture the ratio of components of principal constituent and ancillary component etc. for different, and can add pigment manufacturing, and according to the variation of above-mentioned materials condition of surface, can in mould, drop into before the material or carry out can not carrying out before for the operation of heating and pressurizing closing molding in the past, in the operation of following specification sheets illustrated operation etc. in partly.

This will be different from greatly, drop into the adding-mould that carries out material after the weight of material with manual or automatic method weighing in mould to close-forming process heating and pressurizing, in the past and method etc.

In the present invention, because can be promptly by such operation, for make mechanical characteristics on the footwear parts different sites have inside and outside difference or the diversified footwear parts design and with rerum natura and different a plurality of film severings such as tone, to be somebody's turn to do by the pellicular cascade of severing again and/or be combined in the hole of mould, the operation of following the heating and pressurizing mould and foaming obtains final molding, so economical simply again.Footwear parts of the present invention be meant upper of a shoe with in the end, footwear outer bottom, the footwear in the member, shoe-pad, footwear the end/footwear outer bottom one bodily form sole etc., but be not limited to wherein any.

Be used to make an example of the compression foaming and molding operation of footwear parts of the present invention with reference to Fig. 3 explanation, at first, before compressing the foaming and molding step, prepare a plurality of crosslinked foaming eva films.Design such as the rerum natura of above-mentioned film and/or tone and pattern is identical or different sometimes.Block above-mentioned film then, and make film and the mould that dwindles the certainty ratio design according to volume, the shape of final molding after blocking match (Sa1).

Then, each film of severing join carry out stacked in the mould and/or the combination (Sb1).As employed mould at this moment, its size is generally about 130～150% of final molding, and the structure that is suitable for the free demoulding of molding when its design/making is become the molding foaming and molding, also have, consider the volume of final molding and shape and use the mould hole portion that dwindles manufacturing, be i.e. 50～60% of the goods specification mould hole portion for example.Also prepare mould during the sponge molding of machining large sheet material shape with identical principle, for the foam sponge molding of molding in the middle of the above-mentioned individual component shape or large-sized sheet material type, all are the management of classifying when compounding ingredient and the designing mould according to whether carrying out for molding being made final parts after 1 foaming and molding that 2 compressions reshape to the control of its frothing percentage and density.

It (is 140～160 ℃ under the situation of compression foaming and molding usually that above-mentioned mould is applied certain temperature and pressure, under the situation of injection forming be 160～170 ℃, wherein, said temperature and heat-up time are variant according to size and shape, the purposes of molding and the mechanical conditions of different work field etc. of material mix proportion, mould) (Sc1) after, remove rapidly pressurization and also open mould (Sd1).At this moment, above-mentioned mould is opened simultaneously, and whipping agent is decomposed and is contained in high temperature N in the material in heating process ₂, CO ₂Deng gas expansion and make molding be foamed into shape, carry out the accurate position that forms owing to the structure of mould etc. that cuts off in the process that the molding of promptly repairing above-mentioned 1 compression foaming and molding is shaped reshaping operation without 2 compressions then, perhaps carry out the additional process of surface washing etc., and it is configured as the molding of individual component shape of the final parts of footwear; Perhaps do not carry out 2 compressions and reshape operation and the molding of above-mentioned 1 the compression foaming and molding of severing, and be configured as moldinies such as large-sized sheet material shape as the finished product through follow-up simple manufacturing procedure such as shape or surface grinding.Use above-mentioned subsequent handling respectively after all coolings under suitable state of above-mentioned occasion, size, volume and many rerum naturas of contraction with the stable formation body.

The molding of above-mentioned 1 compression foaming and molding is used for 2 compressions when reshaping, the compression ratio when considering to be shaped for 2 times with the proportion of about 120～140% volumes of final molding or 60～70%, and according to cooperating and the material of design and the condition of mould form.

Therefore, the cooling certain hour in the space of pressure relief and under normal temperature of molding in the middle of above-mentioned is compressed later on reshape operation (Se1).Be about to above-mentioned in the middle of molding forcibly join in the mould of the shape that is designed to be suitable for final molding and size, warm working pressurizes after the closing molding.Cool off above-mentioned mould at last, so, then can obtain final molding if force constant compression to reshape the new shape demoulding afterwards of material.This is that to have utilized one of total characteristic that EVA, PE or foaminess rubber etc. are had be the high crystalline structural performance of resin, is well-known for this point.In the step of the above-mentioned film shape of severing EVA resin, certainly use it blocked the method that is complementary with mould, but also can use simultaneously will be selected side or the crosslinked foaming that is suitable for designing desired position or size such as the end mould internal cutting off method that is inserted in the mould with eva film and effectively utilizes the tone split-frame that is positioned at mould etc. to cut off.From the position of proofreading and correct material with more strengthen the angle that reshapes after foaming, this will be an alternative embodiment of the invention.

Make by above operation under the situation of the rerum natura of each film single foam molding identical with tone etc., also can carry out strict control, the perfect homogeneous of rerum natura or sameization at each position of the footwear parts after so be shaped by the molding of above-mentioned 1 compression foaming and molding or through 2 recompressions can help carrying out large batch of production.Sameization for the rerum natura on the identical single molding of such rerum natura tone, in the past, the material fusion is joined airtight mould inside, foaming and molding is the injection molding method of parts form then, ratio is the common thickness that has more than the 2.5mm, and available sense of touch, hard sheet shape or disk shape material that vision is also differentiated its surfaceness easily join in the mould above-mentioned 1 compression foaming and molding method of its foaming and molding or 2 recompression moulding methodes that molding is further contracted and reshapes at mould inner pressure, the flowability of fused shaped material in the mould hole or the advantage of the filling homogeneity of material etc. have been improved owing to have, so help obtaining rerum natura, the single molding that tone is identical, but manufacturing method according to the invention can realize above-mentioned 1 compression foaming and molding method or use recompressing moulding methodes 2 times of this molding with simpler operation.

Particularly, when having the parts of rerum natura and tone more than 2 kinds with the molding manufacturing through single foaming and molding operation, manufacturing method according to the invention can be produced material shape institute senior footwear parts that can not have, that color harmony rerum natura built-up type designs with in the past 1 compression foaming and molding method, foam-injection formula moulding method or 2 recompression moulding methodes and each moulding method at an easy rate with simpler operation.

As shown in Figure 4, each film severing that above-mentioned rerum natura and/or design etc. are identical or different is also put in the mould, prepares film shape EVA basic compound of the present invention is configured as in advance by vacuum forming or compression molding etc. in advance the materials A (Sa2) of definite shape simultaneously.Such materials A is called preform.

Then, with above-mentioned materials A with select film shape material B as required or in the past laminar or disk shape EVA basic compound, in mould inner stacks and/or combination (Sb2).

Then, the above-mentioned mould of heating and pressurizing (Sc2), the releasing pressurization is also opened mould and is carried out foaming and molding (Sd2).Cool off after the above-mentioned molding, reshape operation and through the accurate additional process of cutting off position that i.e. finishing forms owing to the structure of mould etc. or washing surface etc. without 2 compressions, use or tabular etc. molding severing is become component shape as the final parts of footwear, then with its grinding or through using with final parts such as the manufacturing procedure of other material joint such as similar or rubber etc. as footwear.In addition, when after the cooling of above-mentioned molding it being used as the middle molding of 2 recompression moulding methodes, can be with final molding mould, the operation compression by above-mentioned explanation reshapes (Se2), obtains desirable footwear parts after the cooling and the demoulding at last.The parts that obtain by such method have the buffering of absorption, prevent that bending etc. is functional, the footwear parts that can obtain having various color harmony rerum natura unitized design thus.In the present invention for crosslinked foaming EVA class film, (because the thin thickness of film of the shape of molding in the time of also must on the X-Y-Z axle, controlling foaming, so in fact need not control the Z axle), but it is because of the selection diversity and the preprocess of the homogeneity and the multiple size of material shape shape, so will be than previous methods easy and can carry out stricter control to the control of designed foaming and molding shape.

Utilization has been carried out can using laminar and/or disk shape material in the past simultaneously in the method for crosslinked foaming with EVA basic compound thin film fabrication footwear parts of each operation of the present invention, obtains desirable footwear functions of components or designability easily.For example, in the operation (Sb1 or Sb2) of mould inner stacks-combination, can on the rerum natura distinct portions, use film, and fill remaining part with material substance in the past.At this moment, disk shape material is without foamed process and with cooling off injecting type (melting material in the material injector, and after being injected in the cooling die, shaped material under heating mould and the state that do not foam not, the method of finally demould) be shaped, with its with thin-film material of the present invention combination after can be used as the part use of foam forming material.

Except crosslinked foaming is used the EVA basic compound, can use other material that adds the operation of wherein can foaming in the footwear member manufacturing method of the present invention.As the one example, with the mixing foaming and molding that carries out after cooperating of EVA basic compound, for example natural rubber, ethylene-propylene rubber(EPR) etc. are 0.01～2mm with thickness, are preferably in the material-mix operation of crosslinked foaming with the EVA basic compound of film shape of 0.1～1.0mm and carry out the use of mixing back in the compressible thermoplastic resin that reshapes, staple fibre or an amount of rubber-like then.

When optionally using above-mentioned materials to form the forming operation of thing, can combine with other high crystalline resin etc. and make above-mentioned materials with reshaping property, also can be before and after the compression foamed process of above-mentioned materials, partly carry out the operation that combines with fabric, non-woven fabrics, other type thermoplastic resin, when carrying out these binding operations, it is desirable to the also additional bonding process that is used for bonding each material.

More than the characteristic of Shuo Ming footwear member manufacturing method of the present invention is, [foaming and molding operation (Sd1 or Sd2)] or [compression reshapes operation (Se1 or Se2)] that be connected with this operation, and in the upper of a shoe manufacturing process of [final molded component] that obtain by these operations, by before the metamorphosis that will follow shaped material, the material of state is given preparation work and processibility and even processing before the shape of 1 foam forming material and the foaming and molding operation, can satisfy easily in molding, the requirement that outside different sites has different color harmony rerum natura/functions.

Like this invention has the advantages that, can be by the image design of material before the design foaming such as molding design analysis device in the past, and under the materials behavior before the foaming required for it is effectively implemented, utilize film shape EVA basic compound of the present invention, can realize preprocess, up to its trickle part to material.

In the past, wait each operation and on the foaming and molding operation characteristic of the vivid continually varying EVA basic compound of material through [laminar/disk shape of the inhomogeneous shape prepared of amount by weight]-[being generally the middle molding of 120～140% volumes of final molding]-[being compressed the final parts that reshape], this will be different from the past greatly can't carry out prior form manufacturing procedure to material under the foam material state, in this operation, utilize the thickness and its surperficial roughness that have usually more than the 2.5mm can use vision easily, hard sheet shape that sense of touch is differentiated out or the flaky material of circle only can be controlled the cumulative volume and the face shaping of single molding.

Embodiment 1

When preparing EVA basic compound material film, make the identical film of cooperation ratio of principal constituent and ancillary component, preparing following thickness is the film shape EVA basic compound material of 0.5mm.Under situation about not specifying, thin-film material is the EVA basic compound, is following material.

W1: white, hardness shore C50+/-2 behind 1 compression foamed process or after recompression is shaped

By the form that each positions of designed footwear parts dwindles, the above-mentioned W1 material of severing.For example join 10 intercepted W1 film overlaies above-mentioned materials etc. in the mould then and fill up mould.

Then, each operation through above explanation, if i.e. explanation simply, the molding that cooling obtains behind the overdraft foamed process, do not carry out 2 compressions to reshape operation then and in the forming process since the portion of the formation such as structure of mould carry out accurate severing and promptly repair, perhaps carry out the additional process of surface washing etc., use at last as the final parts of footwear, perhaps in advance reshape middle molding in the operation used as 2 compressions, each component shape of greenware condition or be configured as big shape sponge plate shape after through blocking, operations such as grinding and obtain each component shape of greenware condition, and then reshape operation through overdraft, obtain product shown in Figure 5.

Embodiment 2

When preparing EVA basic compound material film, the cooperation ratio of principal constituent and ancillary component is hierarchical and make the different film of each proportioning, so that have the shape and the rerum natura of desirable final molding, preparing following thickness is the film shape EVA basic compound material of 0.5mm.

1. W1: white, behind 1 compression foamed process or in recompression back hardness shore C50+/-2 that are shaped

2. B1: blueness, behind 1 compression foamed process or in recompression back hardness shore C65+/-2 that are shaped

3. W2: white, behind 1 compression foamed process or in recompression back hardness shore C40+/-2 that are shaped

To have the form that different hardness and tone dwindle, the above-mentioned W1 of severing, B1, W2 material on designed each position of footwear parts.For example join 6 W1 films, 1 B1 film, 3 W2 film overlaies above-mentioned materials etc. in the mould then and fill up mould.

Cool off the molding that behind the overdraft foamed process, obtains then, do not carry out that 2 compressions reshape operation and the precision cut-out is carried out in the forming process because the position of formation such as structure of mould promptly repaired, perhaps carry out the additional process of surface washing etc., use at last, perhaps reshape after middle the molding use of operation again through overdraft and reshape operation and 3 parts producing final molding have the end in the footwear of different rerum naturas and tone used as 2 compressions as the final parts of footwear.Final molding according to such embodiment is illustrated among Fig. 6 a, Fig. 6 b, wherein the sole of Fig. 6 a is that the position of the footwear parts that contact with sole can absorb the buffered sole more well, the sole of Fig. 6 b is bendability and the buffering absorptivity that strengthens the footwear forebody, reduces the sole of the fatigue of pin.

In addition, in the present embodiment, can adopt film severing in advance and then be inserted into method in the mould, utilize the tone discrete blocks that is positioned at mould and in the method (material cut-out moulding method) of mould severing but also can adopt.

Utilize these methods will have the advantage of the position correction problem that solves material.

Cut off moulding method in order to be suitable for above-mentioned materials, utilization can form the differentiation tone or the section boundaries frame of concaveconvex shape at mould hole portion's inner bottom surface or sideway stance etc., in the frame inboard or outside left pressurize in advance and fill up film with single form and aspect or rerum natura.

In the present embodiment, can operate at one or more frames position, and on fill up foaming and molding after the different film of rerum natura, the outside surface that then can just can obtain final molding by foaming and molding operation once effectively is designed to visually diversified footwear parts.

The process sequence figure of these examples has been described in Fig. 6 d～6e.

Embodiment 3

The end etc., compare relatively during than the shoe-pad that approaches in the overall dimension of making final molding and footwear, has the pin forebody about 3/4 can absorb buffering for heel when wearing footwear, from heel, and in order to make bow portion have anchorage force, prepare following material.

1. W3: white, behind 1 compression foamed process or in recompression back hardness shore C30+/-2 that are shaped

2. R1: redness, behind 1 compression foamed process or in recompression back hardness shore C25+/-2 that are shaped

Be positioned at heel and pin forebody central authorities

3. B2: blueness, behind 1 compression foamed process or in recompression back hardness shore C40+/-2 that are shaped

Join the bow position

On each position of designed footwear parts, to have the form that different hardness and tone dwindle, the above-mentioned W3 of severing, R1, B2 material.Then above-mentioned materials etc. is for example joined 2 W3 films, 2 R1 films, 1 B2 film overlay in the mould, and later operation is identical with embodiment 2, at this moment also can use compression according to Fig. 1 explanation to reshape that the cooling die formula reshapes method in the operation.Shoe-pad shown in the Fig. 7 that finishes through above-mentioned each operation is because of its absorption impact and bendability excellence, so applicable in the city shoe in the past and the commodity value height.

Embodiment 4

When making the footwear parts, make on the part of specific rerum natura requiring,, be used for stacked-clustered operation with the molding (W3) of parts manufacturing, 3D shape of forming process in advance of the cooling punching press vacuum method of formationing-in advance of the method for the foregoing description 2.

1. W4: white, waveform is behind 1 compression foamed process or in recompression back hardness shore C 55+/-2 that are shaped

2. W2: redness, behind 1 compression foamed process or in recompression back hardness shore C40+/-2 that are shaped

3. B3: blueness, behind 1 compression foamed process or in recompression back hardness shore C50+/-2 that are shaped

4. R2: redness, behind 1 compression foamed process or in recompression back hardness shore C65+/2 that are shaped

When above-mentioned materials etc. is joined mould, 1 W4 film, 6 B3 films, 3 W2 films, 1 R2 film combinations are got up to join in the mould.Behind the molding of cooling through obtaining behind the overdraft foamed process, do not carry out that 2 compressions reshape operation and the precision cut-out is carried out in the forming process because the position of formation such as structure of mould promptly repaired, perhaps carry out the additional process of surface washing etc., use at last, perhaps reshape the middle molding of operation and the operation of use etc. is identical with embodiment 1 used as 2 compressions as the final parts of footwear.Can be with sidewards or endways joining in the mould during stacked above-mentioned W3 material.In Fig. 8 a and Fig. 8 b, represented each result.

Embodiment 5

In order to make the footwear outer bottom with foaminess rubber, and with footwear in the end type sole that together is made into one, prepare following material.

1. W1: white, behind 1 compression foamed process or in recompression back hardness shore C50+/-2 that are shaped

2. W2: white, behind 1 compression foamed process or in recompression back hardness shore C40+/-2 that are shaped

3. EPR: black, foaminess

To have the form that different hardness and tone dwindle on each position, the above-mentioned W1 of severing, W2, EPR material.Then above-mentioned materials etc. is for example joined 7 W1 films, 3 W2 films, 1 EPR film overlay in the mould, different material like this stacked is called hybrid laminated-clustered operation.And later operation is identical with embodiment 2.

Manufacture after the body, they must be bonded to each other together when above-mentioned EVA resin material layer and EPR layer are crosslinked mutually in the material that cooperates.Such footwear parts in Fig. 9, have been represented.

Embodiment 6

In the stacked-clustered operation of the footwear component manufacturing method of embodiment 1, embodiment 2 or embodiment 4, spread by film at the orlop of mould with various form punching, and in the above whole of one deck or part go up will become with different tones or design and printing or get up to spread with the film combinations that different tones are shaped, upper and lower, the side etc. that can obtain final molding like this seems various effect, luxuriant in design footwear parts from the outside.

Be laid down on undermost material according to the method described above and preferably utilize main cooperation to have the thin film fabrication of the EVA basic compound of wearability, in Figure 10 a, 10b, 10c, represented its effect.

Embodiment 7

According to desired pattern of product and structure, cut off the different tones of aequum or the film shape material of shape, make up stacked being inserted in the mould then.Represented this embodiment in Figure 11 a and Figure 11 b, wherein Figure 11 a is the example of the simple layered manner of stacked thin-film material by different tone severings, and Figure 11 b is the example of the shape layered manner of stacked thin-film material by different tones or shape severing.Other operation is with identical in above-mentioned described explanation, so omit detailed description thereof in the present embodiment.

Embodiment 8

Figure 12 represents embodiment of ideal of the present invention, be when stacking material stacked material surface cooperate pigment with desirable texture and tone, thereby make the example of the tone molding that can enjoy various visual effect.After forming shape material (C1 or C2), the film that combination is combined with pigment overleaf or on the given desired location such as side is inserted in the mould.In the present embodiment, other operation is with identical in above-mentioned described explanation, so omission is to the detailed description of this part.

Embodiment 9 (structural part insertion moulding method-attach most importance to) with side breakthrough form molding

Consider the function of product or construction or design and when needing the specified shape space in the inside and outside portion of product, the structural part that will make of the thermotolerance material is inserted into when laminate film shape crosslinked foaming EVA material to be removed this structural part on the desirable position and after product shaping and only guarantees that the space that shape portion is occupied is the example of single molding.

Figure 13 a～13d has represented this embodiment, will be anti-in the stacked thin film layer of combination in crosslinked foaming with the structural part of the material of the forming temperature of EVA material, light-duty, the easy and molding demoulding (hollow tubular aluminum casting molding for example, the injection forming thing of heat-resistant resin etc.) be inserted on desired pattern of design and the position as the thermotolerance material, and the combination of itself and bulk material joined the hole portion of mould, heating then, pressure expansion are shaped.At this moment because of described insert structure part is to insert with size and form that the position that forms than when foaming dwindles, so separate from molding easily behind the foamed process.Thus, not only form the outside of foam molding, and can form inner forming face, if be applied on its position, to be shaped in advance after other parts again in conjunction with etc. design on, outside structure various footwear parts in then can obtaining effectively, and go at the spatial interpolation of being guaranteed by shape portion can various form utilization behind the functional parts such as injected material or air bag.

Embodiment 10 (function built in type at the bottom of the single molding of multiple rerum natura)

Variation as the foregoing description 5, be by with the characteristic that is suitable for product and structure, the materials behavior cut-out of the desired information of design, combination, stacked minimum film shape crosslinked foaming material step with rerum natura more than 2 kinds (hardness, wear intensity), material before the foaming and molding is integrated, and foaming and molding and make the single molding method of the bonding operation that does not form thing, the character of desired each the film shape material of the function of product is as follows.

1. RP (general thin shape crosslinked foaming EVA based composition): recompression back hardness shore C 60+/-2 that are shaped

2. HEP (snappiness film shape crosslinked foaming EVA based composition): recompression back hardness shore C 45+/-2 that are shaped

3. HAP (high abrasion film shape crosslinked foaming EVA based composition): recompression back wear intensity 135+/-2 that are shaped

Figure 14 a～Figure 14 c is the figure of expression present embodiment.Other operation is with identical in above-mentioned described explanation, so omit detailed description thereof in the present embodiment.

Embodiment 11 (multiple rerum natura monomer molding-buffering absorbs built in type)

Be the example different with the foregoing description 10, Figure 15 a～15c has represented this embodiment, and the character of desired each the film shape material of the function of product is as follows.

1. RP (general thin shape crosslinked foaming EVA based composition): recompression back hardness shoreC60+/-2 that are shaped

2. LAP (buffering absorbing membrane shape crosslinked foaming EVA based composition): recompression hardness Cshore45+/-2 afterwards that are shaped

Other operation is with identical in above-mentioned described explanation, so omit detailed description thereof in the present embodiment.

Embodiment 12 (the single molding of multiple rerum natura-effectively utilized is used to realize the single molding producing method for soles of the vacuum foaming machine of complicated shape)

Be the another example different with the foregoing description 10, Figure 16 a～Figure 16 c is the figure of this embodiment of expression, and the character of desired each the film shape material of the function of product is as follows.

1. RP (in the city shoe end with film shape crosslinked foaming EVA based composition): recompress hardness shore C 60+/-2

2. HECP (snappiness cushioning material with film shape crosslinked foaming EVA based composition): recompression is hardness C shore45+/-2 afterwards

According to present embodiment, has the effect that replaces air bag for giving functional or finish different cushion plate functions by the stacked of material and with the design sample that the compression forming method of common EVA based composition is difficult to make.

Embodiment 13 (the stacked and side packing method of the single molding of multiple rerum natura)

Present embodiment shown in Figure 17 a and Figure 17 b is that the mode shown in the foregoing description 11 is increased the example of packing high abrasion film and improving the flank wear degree of molding.

It is a kind of size according to the said products, is inserted into the mode in the mould after stacked material periphery centers on film form height wearing and tearing EVA materials (HAP).

Embodiment 14 (pattern punching shape moulding method effectively utilize the single molding of vacuum foaming machine at the bottom of manufacture method)

Example shown in Figure 18 a～Figure 18 b is the variation of the foregoing description 6, is to be that material behind the shape of product punches to obtain desirable method of patterning to the film shape material of flush type is configured as three-dimensional shape in advance with the method for injection etc.The words that describe particularly, film shape material after rolling sucked by vacuum or method such as injection is configured as after the shape of product in advance at the shape material of the being prepared desirable pattern that punches, in mould, insert and correction position then according to above-mentioned shape.Then, pattern-forming is inserted into material packs in the bottom material, operation afterwards is with identical in above-mentioned explanation, so omit the detailed description to this part.In addition, also can adopt in the operation of present embodiment pattern perforated material and bottom material combined and be inserted into the method for mould.The method of present embodiment be suitable for will be on the tram of the side of product or curved face part the situation of formed patterns.

Embodiment 15 (the single molding forming method of minimum thickness and maximum ga(u)ge)

Present embodiment is applicable to following situation: in the stacked-clustered operation of the footwear component manufacturing method of embodiment 1, embodiment 2 or embodiment 4, when must be in the same molding integrally formed situation of the size at the thick position of the shape of molding and thin size; If be set forth in upper component and the footwear examples of applications at the end, then the whole position of foam molding approaches and forms with size, requirement will have the example of the upper of a shoe of the thick size of part on privileged site, and the overall dimensions of upper of a shoe shape foam molding be 1.0mm and need privileged site simultaneously or its position repeatedly with the situation of the upper component that is shaped about 10.0mm; Perhaps in contrast to this, preceding foot is that 15mm, rear feet are the situation that the end is shaped in the footwear that must or need repeatedly approximately to be shaped with the 1.0mm size of 25mm and the privileged site between them or its position.

As above-mentioned situation, if total size of molding has very big deviation on different positions, then such design in the past compression foaming or foam-injection when mould inside carries out heating and pressurizing, because mobile deficiency, when using lamellar material, material will exceedingly press to the high position of size and be broken in thin position, perhaps when using disk shape material or injection forming, flowing of material is cut off easily, therefore when producing in batches, occurs owing to the product unshaped causes high fraction defective.

This is because usefulness material shape in the past is to be not easy to realize, in order to make forming dimension in the shape of molded component is 1.0mm and during according to common in the past frothing percentage contrast die design, must be in the mould hole of about 0.7mm flow into the fused shaped material in the space, and lot of materials is only filled up once more be used to be shaped thick size position.

This operation is in order to implement such example, at first severing or be shaped the in advance film about the 0.7mm at minimum size position of above-mentioned thin position and thick position integratedly can being accommodated, be used to during foaming and molding to be shaped.At the back side of this film or inner laminated-combination by severing or by after forming process is removed other position at minimum size position in advance, again it is put into mould internal heating pressurization carrying out foaming and molding.

In Figure 19 a～19d, represented to be used for to implement the process and the result of the operation of above-mentioned example, and thus in single foam molding, can obtain being designed to the very big footwear parts of different sites size difference effectively by the one step foaming operation.

In the above description, the present invention particularly utilizes the method that film shape crosslinked foaming is stacked with it with the EVA based composition, molding is made in foaming, be not limited to the above embodiments, accompanying drawing and footwear industrial field, can carry out various changes and distortion in the scope that does not break away from the technology of the present invention thought, Application for Field is conspicuous for those of ordinary skill in addition in this field.

Embodiment 16

Use as thin-film material, is the one-piece type material of one calendaring moldings such as fabric, non-woven fabrics, imitation leather, foaminess rubber compound, thermoplastic resin composition by accurate calendaring molding operation with film shape EVA basic compound and other general material, an example that manufactures body is, the color harmony rerum natura at the different surfaces position of shaped material and molding is manufactured various form.

It is that 40inch, thickness are 0.5m/m that above-mentioned film shape EVA basic compound is processed into width, and become the material of one as carrying out calendaring molding with it, use by the PVA fineness be the width of staple fibre manufacturing of 0.7～1.0 (fineness 0.7～1.0 denier) as 40inch, thickness as the non-woven fabrics of 0.5m/m or PVA width as 40inch, thickness thin-film material as 0.3m/m, these 2 kinds of materials are integrated by their physical bond.Then it is processed as band shape or linear material.

With film or nonwoven cloth material and EVA basic compound calendaring molding is that one-piece type major cause is, when weaving above-mentioned cloth in order to replenish the possibility that prevents that film shape EVA basic compound from increasing, thus serve as the enhancing material with tensile strength, this is to select to carry out according to the thickness of film shape EVA basic compound material certainly.The EVA basic compound of the above-mentioned fabrics shape by such operation manufacturing after foaming and molding when being molding, the expansion that hinders material for non-woven fabrics that not make with it the non-foaminess material that uses be the water-soluble poval composition or film, and the material of above-mentioned fabrics shape in water Celsius about 10～30 ℃ by certain hour, dissolve the non-woven fabrics of the water-soluble poval composition that exists on the fabric form material or film thus and remove these materials and shape from above-mentioned cloth.Air seasoning is through the material of above-mentioned operation, and combine with of the present invention various embodiment of above-mentioned explanation and make the single EVA molding that to finish with in the past thin slice shape, disc material and manufacturing process with outward appearance that various tone arranges, other molding operation in the present embodiment is identical with the above embodiments, specifies so omit.

As described above, the film that constitutes with the EVA basic compound by crosslinked foaming of the present invention, not only has 0.01～2mm, be preferably the multiple thickness of 0.1～1.0mm, and evenly be processed into its surperficial roughness deviation and be difficult to the naked eye the degree differentiated with sense of touch, and can carry out multiple prior processing operation and realize various image design the materials behavior before the foaming and molding operation.With this material foaming and molding the time, the distribution of the above-mentioned material of processing in advance or being shaped in advance is because of the characteristic homogeneous of above-mentioned film shape, so by utilizing the footwear component manufacturing method of film of the present invention, and the operation of the simplification of the fine part by can be controlled to the footwear parts is made footwear parts of the present invention.

The second, by the operation that is simplified, in the footwear parts that privileged site the contacted part of pin, introduce required rerum natura, can improve final molded item quality reliability and weather resistance simultaneously.

The 3rd, compare with previous methods, have and give multiple color tones, pattern, literal with the manufacturing expense that is dirt cheap to the footwear parts and introduce the effect of new design.

The 4th, have by the operation that is simplified than the low-down manufacturing expense of previous methods give easily or increase footwear impact absorbency, wearability, elasticity, bendability, prevent bending and improve various functional effects such as anchorage force.

The 5th, the integrated making of the end and footwear outer bottom or need distinguish high rigidity and soft position on a molding time in footwear does not engage the different parts of rerum natura in addition, thereby has with the operation more simplified the integrated effect that becomes parts of these parts.

The 6th, the simple and required high price mould number of footwear parts manufacturing process reduces, and makes the effect that unit price descends thereby have to make.

The 7th, have by the better way operation and reduce the substandard products incidence, and can ideally realize desirable all multi-functionally, and can stably reproduce the effect of these functions when producing in batches.

The 8th, the easy degree of the different mechanical properties that provides on each of footwear parts position and functional, tone, design is provided, can leap and surpass the effect of the manufacture method of limitation in the past.

The 9th, on the thin parts of size, also reproduce above-mentioned effect easily, and with the footwear parts purposes of different functional, design effects and foam molding will not only resemble in the past, be used for material for sole of shoe in the past, and also can be used in upper of a shoe etc., the diversified manufacture method of purposes.

The tenth, the effect of the footwear parts of environment-friendly type with crosslinked foaming EVA manufacture method is provided, promptly since before can will prior processing foamed shaping after the material of state residual material cooperate the operation characteristic of processing again, so can be from source cut-out 1 foam molding is configured as big shape sheet material and its severing is become the sponge waste of being discharged after the parts form in the past.

Claims (27)

1, a kind of crosslinked foaming ethane-acetic acid ethyenyl ester class film, it is characterized in that in this ethane-acetic acid ethyenyl ester based composition, described composition is the EVA resinoid, use dicumyl peroxide as linking agent, as whipping agent by being selected from JTR-M, stearic acid, MgCO ₃, TiO ₂, CaCO ₃And more than one the inorganics among one group of the ZnO constitutes, and manufactures the film shape that thickness is 0.01mm～2.0mm.

2, a kind of crosslinked foaming EVA class film, it is characterized in that, in the EVA based composition, described composition is the EVA resinoid, and contain ethylene-butene copolymer and polyisoprene rubber more than 2 kinds, use dicumyl peroxide or TAC as linking agent, use ACDC, use as pigment to be selected from TiO as whipping agent ₂, stearic acid, CaCO ₃, more than one the inorganics among one group of the ZnO, and manufacture the film shape that thickness is 0.01mm～2.0mm.

3, film according to claim 1 and 2 is characterized in that, described composition and staple fibre, fabric, non-woven fabrics, imitation leather, foaminess rubber compound and/or thermoplastic resin composition together are shaped simultaneously by calendering procedure.

4, film according to claim 1 and 2 is characterized in that, the thickness of described film is 0.1～1.0mm.

5, according to any described film in the claim 1～4, it is characterized in that, handle with interior low temperature process at 30～100 degree Celsius during the described film of calendaring molding.

6, a kind of footwear member manufacturing method is to utilize the method for crosslinked foaming with ethane-acetic acid ethyenyl ester based composition manufacturing footwear parts, it is characterized in that, comprising: a1) severing thickness is the severing operation of the crosslinked foaming of 0.01～2mm with the basic compound film; B1) the stacked-clustered operation of and/or combination folded in the mould cavitation layer through the film of described severing operation; C1) cover the lid of described mould, the heating of heating, pressurizeing-pressurization operation, and d1) remove pressurization to described mould after, remove the foaming and molding operation that lid foams.

7, footwear member manufacturing method according to claim 6 is characterized in that, the thickness of described ethane-acetic acid ethyenyl ester film is 0.1～1.0mm.

8, footwear member manufacturing method according to claim 6, it is characterized in that, when making described film, perhaps mixing staple fibre etc. in the ethane-acetic acid ethyenyl ester basic compound, perhaps with fabric, non-woven fabrics, imitation leather, foaminess rubber stock and/or thermoplastic resin composition's one bonding and molding, thereby the rerum natura characteristic is improved and variation.

9, footwear member manufacturing method according to claim 6 is characterized in that, comprising: the non-woven fabrics of mixing water-soluble polymer or film shaped operation in described ethane-acetic acid ethyenyl ester film; Described shaping thing is processed into the operation of band shape or wire; The operation that weaves or weave with described machining object, and with the described water-soluble polymer dissolving and the operation of removing from fabric, thereby the rerum natura characteristic of described film is improved and variation.

10, footwear member manufacturing method according to claim 6 is characterized in that, and at described b1) film that uses in stacked-clustered operation together uses fabric and/or non-woven fabrics, and is natural/the imitation leather class, rubber-like.

11, footwear member manufacturing method according to claim 6 is characterized in that, uses 2 the above films, and their rerum natura and/or tones each other are different.

12, footwear member manufacturing method according to claim 6 is characterized in that, uses 2 the above films, and is the film that is printed with rule, random pattern and/or literal more than one of them.

13, footwear member manufacturing method according to claim 6 is characterized in that, described film is with the variform punching or cuts off the more than one film that a plurality of holes are arranged.

14, footwear member manufacturing method according to claim 6, it is characterized in that, stacked and/or builtup film, make at described b1) finish parts in stacked-clustered operation after, the bow portion at the inside line at pin rear portion or pin middle part compares with other position by hardization so that increase supporting power, and the buffering absorbing power of the outside at pin rear portion or pin forward middle part or elasticity, restoring force are bigger relatively than described position.

15, footwear member manufacturing method according to claim 14, it is characterized in that, stacked and/or builtup film, make at described b1) finish parts in stacked-clustered operation after, make the hardness of the part that the position with the toe bending joins little, and make the rerum natura characteristic differenceization of the intravital different sites of single shaping so that its buffering absorbing power is big and make bow portion have supporting power.

16, footwear member manufacturing method according to claim 6, it is characterized in that, at described b1) in stacked-clustered operation, to use cooling forming be laminar and/or disk shape or foaming before the crosslinked foaming of state with ethane-acetic acid ethyenyl ester basic compound material with described film is together stacked and/or make up.

17, footwear member manufacturing method according to claim 6, it is characterized in that, be used in described b1) being to use more than in the film in stacked-clustered operation carry out stacked through the crosslinked foaming that is shaped in advance with ethane-acetic acid ethyenyl ester basic compound preform as required and/or make up.

18, footwear member manufacturing method according to claim 17 is characterized in that, described preform is a three-dimensional shape.

19, footwear member manufacturing method according to claim 6, it is characterized in that, during stacked described film, another film of pigment that is combined with the color harmony visual effect different with stacked film or additive is inserted into the top or back side or the side of stacked thin film layer.

20, footwear member manufacturing method according to claim 6 is characterized in that, also additionally it is removed after being included in inner insert structure body of stacked film and foaming and molding, so that form the spatial operation in stacked inside again.

21, according to any described footwear member manufacturing method in the claim 6～20, it is characterized in that an also additional film of the described foamed process of process or the molding of comprising put in the mould of finishing product usefulness the compression of compressing/reshaping and reshaped operation.

22, footwear member manufacturing method according to claim 21, it is characterized in that, also comprise: bb) at described b1) in stacked-clustered operation, in certain position and/or layer, mix crosslinked foaming with foaminess thermoplastic resin and/or elastomeric material beyond the ethane-acetic acid ethyenyl ester basic compound and carry out stacked/or hybrid laminated-clustered operation of making up; Ee) will be through described e1) compression reshape operation, by the joint operation of the footwear components bonding of different mutually material formings.

23, footwear member manufacturing method according to claim 22 is characterized in that, is used in described bb) material in hybrid laminated-clustered operation is positioned at the orlop in mould hole.

24, a kind of footwear parts is characterized in that, method manufacturing according to claim 17 is integrally formed with ethane-acetic acid ethyenyl ester basic compound preform through the crosslinked foaming that is shaped in advance.

25, footwear parts according to claim 23 is characterized in that, described preform is a three-dimensional shape.

26, a kind of footwear parts, it is characterized in that, has following design: make by the described method of claim 13, below top, the side of its sole etc. outermost layer or be perforated or layer that severing becomes definite shape the layer with certain tone, decorative pattern and/or literal of one deck is integrally formed down with it, and be perforated or by severing layer the back side and anterior layer make a distinction and expose externally.

27, a kind of footwear parts is characterized in that, are to make according to any described manufacture method in the claim 6～23.

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