CN1156083A

CN1156083A - Producing method for foamed EVA shoe insole and peripheral contour

Info

Publication number: CN1156083A
Application number: CN 96101232
Authority: CN
Inventors: 纪正贤
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-02-01
Filing date: 1996-02-01
Publication date: 1997-08-06

Abstract

A method for manufacturing the insole of foam EVA and its peripheral contour includes such steps as rolling the mixture of EVA resin and foaming agent into long and flat plate, cutting it into several blanks of the insole reduced proportionally, and putting it in high-temp. mould at 180 deg.C for thermally pressing and expanding. The finished insole has pattern and arc moulding on side periphery and bottom, accepting edge convex upward on top surface, and a decorative belt on the inside periphery of the insole and accepting edge. Its advantages include high physical performance, toughness and tension strength, and saving energy.

Description

The manufacture method of the end and periphery contour thereof in the EVA foaming footwear

The present invention relates to a kind of human lives needs the manufacture method of individual and household supplies field footwear, particularly relate to a kind of in the fork sole by EVA (ethene vinyl acetate vinegar resin) and the foaming composite material via being rolled into a long and flat offset plate, then cut into germule of the scaled down middle end, be heated foaming again to finish bottom structure in the foaming, its again in this foaming end lateral border frame establish and glue together a decorative panel strip, and finish the manufacture method of the end in the EVA foaming footwear of end periphery panel profile in the foaming footwear and periphery contour thereof.

The sole of general motion footwear is glued together by middle level EVA foamed material layer (being commonly called as the middle end) and bottom abrasive rubber material layer (being commonly called as the big end) to form, and the EVA foamed material layer at the end has preferable elasticity and toughness in being somebody's turn to do, its main material consists of: the materials such as EVA (ethylene vinyl acetate resin), CAP blowing agent and DCP bridging agent of predetermined ratio are mixed stirring, and the foaming of heating becomes the rubber-like foamed material layer, so as to middle bottom material, with comfort and the increase elasticity shock-absorbing effect that the foot dress is provided as sport footwear; But the middle end of known sport footwear, is because of the difference of its manufacture method and structure, cause and have a strong impact on the gummed structure that bottom side edge and frame in this are established decorative panel strip, and cause the increase of product fraction defective and manufacturing cost, and the manufacture method and the structure thereof at the end in the relevant known sport footwear, then can consult the Taiwan patent gazette and announce " accurately end polychrome chimb profile method for making in the foaming footwear of embossing " patent case No. 157875, be designated hereinafter simply as and quote case as proof, this quotes the manufacturing technology feature of case as proof, as shown in Figure 1 to Figure 3, the end in its footwear (12) is with predetermined angle expanded material plate (10) to be cut into thicker sidepiece (heel position) and thin sidepiece (sole position) by the array cut-off knife, and then cutting into the thick embryo in the end (12) in the footwear of preliminary dimension with cutting die, it needs numerous and diverse cutting step just can finish the shape at the end in the wedge shape foaming footwear; In addition, the thick embryo periphery of the end (12) also needs edging typing, the smooth lateral margin that is glued at the middle end (12) of profile decorative panel strip (15) one that just frame can be established in these known footwear; But quoting as proof in the severing of the thick embryo of the case end (12) in footwear and the edging type-approval process, this can produce a large amount of waste material chips, not only cause the waste of material and increase the cost of handling waste material, and in this severing and edging processing procedure, can destroy the moulding skin membrane of end expanded material plate in this, and this skin membrane has preferable rerum natura, toughness and tensile strength, so quote cutting and edging processing procedure labor intensive and increase cost not only of case as proof, and it does not have the value on the industry; Moreover, the middle end (12) of quoting case as proof, there is no foaming-formed embossing lines, and wherein the end face periphery of the end (12) is rectangular shape but not the circular-arc edge of accepting, so profile decorative panel strip (15) and vamp that itself and frame are established all are not easy smooth gummed, and the difficult value that has on the industry of being suitable for that is called.

In view of this, the inventor is constantly studied improvement based on actual manufacturing experience and the professional knowledge of being engaged in sport footwear for many years, and through designing repeatedly, manufacture experimently and testing, founds finally and finish the present invention.

The objective of the invention is to; overcome the defective of prior art; and the manufacture method of the end in a kind of EVA foaming footwear and periphery contour thereof is provided; make it need not to cut and the manufacturing process of edging typing; promptly can protect the skin membrane at the end in the foaming footwear, have the effect of rerum natura, toughness and the tensile strength of end structure in the increase.

Another object of the present invention is to, the manufacture method of the end in a kind of EVA foaming footwear and periphery contour thereof is provided, make it only need processing procedure of a molding tool and once typing just can finish product of the middle end, not only can reduce the generation of waste material, also can reduce the manufacturing cost of mould, more can save repeatedly the energy waste of heating in the mould, pressurization and cooling.

A further object of the present invention is, the manufacture method of the end in a kind of EVA foaming footwear and periphery contour thereof is provided, make it make full use of the particle that cuts of offset plate, and filling increase in the heel position foaming thickness of end germule, and then can reduce this offset plate waste disposal and reach the industry practical value that material resource utilizes again.

The objective of the invention is to realize by following technical scheme.The manufacture method of the end and periphery contour thereof in a kind of EVA foaming footwear, it is by rivet bucker the foaming mixture material to be rolled into the offset plate of a long and flat, then, utilizes and carries a cutter this offset plate is cut into end germule in several scaled down footwear; It is characterized in that: end germule is that the interior one hot pressing of mould of directly inserting 180 ℃ of high temperature expand into end finished product in the foaming footwear in these scaled down footwear, and but the appropriate location foaming of the lateral margin at the end and bottom surface has the embossing lines or is the moulding of specific arc in these foaming footwear, the end face periphery ring at the end is provided with the edge of accepting of a projection in other these foaming footwear, and in these foaming footwear the end with accept the intermarginal arc surface that generally is a level and smooth shape, the lateral surface that makes the end in these foaming footwear and accept edge gets so that the decorative panel strip that smooth gummed frame is established.

Purpose of the present invention also can further be realized by following technical measures.The manufacture method of the end and periphery contour thereof in the aforesaid EVA foaming, when the thickness of its front and back end of germule, the end is identical in the wherein said scaled down footwear, then need before it is inserted the mould of foamable, at an amount of glue utmost point particle of side interpolation of this germule.

The present invention compared with prior art has tangible advantage and good effect.By above technical scheme as can be known, the present invention has improved the known drawback of quoting case as proof effectively, it is earlier the EVA of predetermined ratio and the composite material that foams to be stirred the back and be rolled into an offset plate, the offset plate that this is not foamed cuts into germule of the scaled down middle end again, end germule was then inserted foamable typing in a molding tool during this was scaled down, the present invention makes this germule of scaled down middle end finish the thicker heel part of Shi Nengyou (as wedge shape) in foaming, so can in this reduce in scale, cut particle by the heel position quantitative offset plate of interpolation of end germule, or directly on the offset plate that forms wedge shape, cut scaled down in end germule, make this germule of scaled down middle end finish the thicker heel part of Shi Nengyou (as wedge shape) in foaming, and can make the end in the comfortable and foaming footwear being convenient to wear, and end end face periphery foaming has the circular-arc edge of accepting in the made footwear of the present invention, is more convenient for processing the smooth one that composes with the decorative panel strip of establishing with its upper end frame; It has improved the known case of quoting as proof and has cut the method for making of expanded material plate with cutting die, quoting case as proof because of this is cutting and edging is finalized the design in the processing procedure at the end in these footwear that foamed, its destroyed the skin membrane of end foaming layer in these footwear, but the present invention constitutes end structure in the complete foaming footwear again with end germule in scaled down earlier through the one step foaming moulding, so the present invention need not to cut and the manufacturing process of edging typing, promptly can protect the skin membrane at the end in the foaming footwear, and and then have an effect of rerum natura, toughness and the tensile strength of end structure in the increase; It only needs the processing procedure of a molding tool and once typing just can finish product of the middle end, not only can reduce the generation of waste material, also can reduce the manufacturing cost of mould, more can save repeatedly the energy waste of heating in the mould, pressurization and cooling; It makes full use of the particle that cuts of this offset plate, and the foaming thickness at the heel position of end germule in increasing with its filling, and then can reduce this offset plate waste disposal and reach the industry practical value that material resource utilizes again.

In sum, the present invention for fork sole in a kind of by EVA (ethylene vinyl acetate resin) and foaming composite material via being rolled into a long and flat offset plate, then cut into germule of the scaled down middle end, be heated foaming again and make the structure at the end in the foaming, its again in this foaming the lateral border frame at the end establish and glue together a decorative panel strip, and finish the manufacture method of end periphery panel profile in the foaming footwear.Its really own drawback of improving prior art, i.e. the present invention need not the end in the own foaming footwear of finalizing the design of severing edging, and also there is not the energy waste that needs the interior heating of two apotypes to pressurize in its manufacture process; Further, but end periphery foaming has the embossing lines or is shaped to the moulding of specific arc in the foaming footwear of the present invention, and can significantly improve the value on its industry, and therefore, the present invention is the invention for having progressive and practicality really.

Concrete manufacture method of the present invention and relevant structure thereof are provided in detail by following examples and accompanying drawing thereof.

Fig. 1 is the structure stereoscopic figure of the thick embryo in the end and profile decorative panel strip thereof in the foaming footwear that cutting die cuts in the known patent case.

Fig. 2 be among Fig. 1 in the foaming footwear the thick embryo in the end cut the situation schematic diagram.

Fig. 3 is the profile of A-A among Fig. 2.

Fig. 4 is the manufacturing flow chart of preferred embodiment of the present invention.

Fig. 5 be the present invention on offset plate, cut scaled down in the schematic diagram of end germule material.

Fig. 6 is the structure stereoscopic figure of the end and profile decorative panel strip thereof in the foaming footwear of the present invention.

See also Fig. 4; Fig. 5; shown in Figure 6; the manufacture method of the end and periphery contour thereof in the EVA foaming footwear of the present invention; the structural feature of end finished product is in its manufacturing process and the foaming footwear thereof; at first with the EVA (ethylene vinyl acetate resin) of predetermined ratio; materials such as CAP blowing agent and DCP bridging agent are mixed stirring; by rivet bucker this foaming mixture material is rolled into the offset plate (20) of a long and flat then; then; utilize guillotine that offset plate (20) is cut into end germule (22) in several scaled down footwear; the present invention finishes the thicker heel part of Shi Nengyou for making this scaled down middle end germule (22) in foaming; wedge shape for example; so can be in this be scaled down the quantitative offset plate (20) of the heel position interpolation of end germule (22) cut particle; or directly on the offset plate that generally is wedge shape (20), cut several scaled down in end germule (22); make this scaled down middle end germule (22) finish the thicker heel part of Shi Nengyou in foaming; and this scaled down in end germule (22) be to insert the finished product that one hot pressing in the mould of 180 ℃ of high temperature expand into the end (25) in the foaming footwear; in these foaming footwear the end (25) but lateral margin and appropriate location, bottom surface foaming embossing lines (251) is arranged; and the end in the foaming footwear (25) directly foaming become the moulding of specific arc; and need not via known complicated cutting and the step of edging typing; what in addition the end face periphery ring at the end (25) was provided with a projection in these foaming footwear accepts edge (252); and in the foaming footwear end (25) and accept between edge (252) to generally being the arc surface of a level and smooth shape; so that the end (25) get so that the decorative panel strip (30) that smooth gummed frame is established with the lateral surface of accepting edge (252) in the foaming footwear; and the decorative panel strip that this frame is established (30) is to be used for coating the lateral margin of (25) at the bottom of the foaming footwear and to accept the vamp (not shown); the then glue-bondable wear-resisting rubber soles in appropriate location, bottom side as for the end (25) in the foaming footwear; because the present invention is earlier to cut germule of the scaled down middle end; be shaped to end structure in the complete foaming footwear through one step foaming again; so the present invention need not to cut and the finished product of the middle end of this own foaming and setting of edging; can protect the skin membrane at the end (25) in the foaming footwear, and and then can increase in the rerum natura of end structure; toughness and tensile strength.

Claims

1. the manufacture method of the end and periphery contour thereof in the EVA foaming footwear, it is by rivet bucker the foaming mixture material to be rolled into the offset plate of a long and flat, then, utilizes and carries a cutter this offset plate is cut into end germule in several scaled down footwear; It is characterized in that:

End germule is that the interior one hot pressing of mould of directly inserting 180 ℃ of high temperature expand into end finished product in the foaming footwear in these scaled down footwear, and but the appropriate location foaming of the lateral margin at the end and bottom surface has the embossing lines or is the moulding of specific arc in these foaming footwear, the end face periphery ring at the end is provided with the edge of accepting of a projection in other these foaming footwear, and in these foaming footwear the end with accept the intermarginal arc surface that generally is a level and smooth shape, the lateral surface that makes the end in these foaming footwear and accept edge gets so that the decorative panel strip that smooth gummed frame is established.

2. the manufacture method of the end and periphery contour thereof in foaming according to the described EVA of claim, when it is characterized in that the thickness of its front and back end of germule, the end in the described scaled down footwear is identical, then need before it is inserted the mould of foamable, at an amount of offset plate particle of side interpolation of this germule.