CN1074352C - Injection molding and foaming process of double-color and double-hardness sole made of ethylene-ethyl acetate copolymer - Google Patents
Injection molding and foaming process of double-color and double-hardness sole made of ethylene-ethyl acetate copolymer Download PDFInfo
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- CN1074352C CN1074352C CN98119322A CN98119322A CN1074352C CN 1074352 C CN1074352 C CN 1074352C CN 98119322 A CN98119322 A CN 98119322A CN 98119322 A CN98119322 A CN 98119322A CN 1074352 C CN1074352 C CN 1074352C
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- shoe
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Abstract
The present invention relates to an injection molding and foaming method of a double-color and double-hardness combined shoe sole of EVA (ethylene vinyl acetate). Hard EVA plastic is used for making the external shape of a shoe side block, and the end face of the shoe side block is provided with more than two embedded holes in a direction opposite to a shoe; the shoe side block is placed in a preset position of a shoe-shaped mold cavity in a foaming mold. Soft EVA plastic is used as shoe sole plastic which is injected into the foaming mold and flows into the shoe side block coated by the mold cavity. A finished product is taken out by opening the mold and put into a tunnel drying oven for shaping. The present invention uses hard EVA to manufacture the shoe side block and uses the softer EVA shoe sole plastic to be injected for coating the shoe side block in order to make the shoe side block integrally combined with the shoe sole; thus, the present invention has the effect of double colors, double hardness and steady, rapid and beautiful combination.
Description
The present invention relates to the shoes manufacturing technology in the shoes of a kind of personal belongings field, particularly relate to the sole injection foaming manufacture method of EVA (ethylene vinyl acetate copolymer) the double-color and double-hardness combination in a kind of sole.
The sole of sport footwear is in designing for manufacturing, in order to try to achieve the needs that more meet ergonomics, at present can be as shown in Figure 5, at the side of sole 40 a footwear limit piece 30 is installed, and the effect of footwear limit piece 30 is to adopt the material that is stiffer than sole 40, kept the shoe-shaped profile and made more comfortable on foot, reduce the possibility that is hurt simultaneously, but the manufacture method that footwear limit piece 30 is incorporated into sole 40 is: produce sole 40 → in the position of sole 40 side absolute presupposition footwear limit pieces 30 in advance and excavate to form and be provided with interface 41, → make the footwear limit piece 30 of hard material again, and footwear limit piece 30 can be different color → coat glutinous agent such as resin in interface 41 positions of sole 40 and the opposite face of footwear limit piece 30, → footwear limit piece 30 is bonding on sole 40 to fill up interface 41 positions, form complete sole 40, and can have both double-colored, different hardness, footwear limit piece 30 is for exposing to sole 40.Yet this manufacture method has following shortcoming on making:
1, the manufacturing process trouble is loaded down with trivial details:
Need make sole 40 earlier, dig again and set out interface 41, the footwear limit piece 30 that makes is filled up gluing, its manufacturing process is complicated, and need the solid time of wait for doing behind the gluing, also need to locate carefully at waiting time in case paste and walk, so mass production efficient is poor.
2, increase cost:
Except the loaded down with trivial details increase cost of manufacturing process, a large amount of uses of glutinous agent expense that also raises the cost, and glutinous agent is to try to achieve that to protect solidity be the glutinous agent that will select character more excellent naturally, well imagining increases the cost result that is inevitable.
3, owe durable in conjunction with effect:
The resinoid bond mode, if be bad in pasting technical process, make footwear limit piece 30 and sole 40 produce the bad potential difference of adaptation easily, must take a lot of trouble the ground brute force pastes, shoes ground for years traveling is simultaneously dressed, easier of contact sunlight and rainwater so that material ageing, cause the bad scarce fraud of gummed, and produce more caducous problem built on the sand.
4, seam will appear in footwear limit piece and sole easily:
This shows that above-mentioned existing manufacture method of sole still has many defectives, and the assistant officer treats further to be improved.
Because the defective that above-mentioned existing manufacture method of sole exists, the inventor actively study innovation based on abundant practical experience and professional knowledge, through constantly studying, design, and after studying sample and improvement repeatedly, creates the present invention finally.
Main purpose of the present invention is, overcome the defective that existing manufacture method of sole exists, and provide the sole injection foaming manufacture method of a kind of ethylene vinyl acetate copolymer double-color and double-hardness combination, making it mainly is to be that sole plastics one coat to constitute with footwear limit piece, footwear limit piece is hard material, and sole is than softwood matter, piece is made in advance when the footwear limit, cooperate the sole plastics to inject and coat shaping, just make the footwear limit piece one that is different from sole color, hardness firmly be incorporated into sole, and have dress durablely do not come off, effect is attractive in appearance and the effect that can reduce cost.
The objective of the invention is to realize by following technical scheme.The sole injection foaming manufacture method of a kind of ethylene vinyl acetate copolymer double-color and double-hardness combination that proposes according to the present invention, its manufacturing process is: a: system is established footwear limit piece: making the appearance profile of footwear limit piece than the EVA plastics of hard, and footwear limit piece also forms the embedding hole that is provided with more than two simultaneously at the end face of shoes direction in opposite directions; B: insert mould: the predeterminated position of footwear limit piece being inserted shoe-shaped die cavity in the foaming mould; C: prepare the sole plastics: prepare than the EVA of softwood matter with as the sole plastics; D: injection moulding coats: above-mentioned sole plastics are injected in foaming mould, and temperature is controlled to be 160～180 ℃, and the time was controlled within 5～10 minutes, makes sole plastics inflow die cavity and coats footwear limit piece; E: die sinking: open mould to take out finished product; F: finished product: finished product is put into the tunnel baking oven finalize the design.
Purpose of the present invention can also further realize by following technical measures.The sole injection foaming manufacture method of aforesaid ethylene vinyl acetate copolymer double-color and double-hardness combination, wherein said footwear limit piece can be different colors with the sole plastics.
The present invention compared with prior art has tangible advantage and good effect.By above technical scheme as can be known, characteristic of the present invention is as follows:
1, make rapidly, effectively improve mass production efficient:
As long as produce footwear limit piece earlier than hard, allow the injection moulding of sole plastics one coat, just finished sole double-colored, two hardness, the manufacture method that existing loaded down with trivial details digging established, binded, can shorten dramatically work flow, make reliablely more rapidly, enhance productivity.
2, sound and reliable and durable in conjunction with effect:
Since footwear limit piece be at the sole plastics in the semi-fluid condition combination, plastics have covered the embedding hole with flow regime stream, contact the side face of footwear limit piece densely, thus quite reliable in conjunction with fastness, but durable is guaranteed the permanence of using.
3, yet double-color and double-hardness is in conjunction with being difficult for fading quite certainly:
Because this footwear limit piece can independently be made with coloured plastics material for being shaped in advance, not needing takes to spray paint covers up, and the utmost point is fugitive color not, keeps double-colored aesthetic easily.
4, reduce cost:
The present invention has exempted the manufacture method of the glutinous agent of a large amount of uses, saves the time cost and the glutinous agent expense of bonding process, can reduce cost, and improves profit.
In sum, it mainly is to make footwear limit piece with harder EVA for the present invention, will insert in the mould than the footwear limit piece of hard, is injected by softer EVA sole plastics to coat footwear limit piece, make footwear limit piece one be incorporated into sole, can reach double-color and double-hardness in conjunction with effect firm, rapid, attractive in appearance.No matter it is all having bigger improvement on manufacture method, on the structure or on the function, and has produced handy and practical effect, and has the effect of enhancement really, thereby is suitable for practicality more, really is a new and innovative, progressive, practical new design.
Concrete structure of the present invention is provided in detail by following examples and accompanying drawing thereof.
Fig. 1 is an element flow chart of the present invention.
Fig. 2 is footwear of the present invention limit piece stereoscopic figure.
Fig. 3 is the stereogram that sole of the present invention coats footwear limit piece.
Fig. 4 is the cutaway view that sole of the present invention coats footwear limit piece.
Fig. 5 is the exploded perspective view of existing footwear limit piece and sole integrated structure.
Below in conjunction with accompanying drawing and preferred embodiment, its concrete manufacture method of sole injection foaming manufacture method, structure, feature and the effect thereof of the ethylene vinyl acetate copolymer double-color and double-hardness combination that foundation the present invention is proposed, describe in detail as after.
See also Fig. 1, Fig. 2, shown in Figure 3, the sole injection foaming manufacture method of ethylene vinyl acetate copolymer double-color and double-hardness of the present invention combination, its manufacturing process is as follows:
A: system is established footwear limit piece:
Making the appearance profile of footwear limit piece 10 than EVA (ethylene vinyl acetate copolymer) plastics of hard, and footwear limit piece 10 also forms the embedding hole 11 that is provided with more than two simultaneously at the end face of shoes direction in opposite directions, and the shape in this embedding hole 11 is unrestricted.
B: insert mould:
C: prepare the sole plastics:
Preparation than the EVA of softwood matter with as sole plastics 20;
D: injection moulding coats:
See also shown in Figure 4, above-mentioned sole plastics 20 are injected in foaming mould, its temperature is controlled to be 160～180 ℃, time was controlled within 5～10 minutes, make sole plastics 20 inflow die cavitys and coat footwear limit piece 10, because footwear limit piece 10 forms and is provided with embedding hole 11,, live footwear limit piece 10 is chimeric firmly so the fluid of sole plastics 20 promptly forms the structure and the effect of grabbing embedding;
E: die sinking:
Open mould to take out finished product;
F: finished product:
Finished product is put into the tunnel baking oven finalize the design, form appearance and modeling structure as shown in Figure 3.
Below characteristic of the present invention is described as follows: the present invention is as long as produce footwear limit piece 10 than hard in advance, allow the 20 one injection mouldings of sole plastics coat, just finished sole double-colored, two hardness, the manufacture method that existing loaded down with trivial details digging established, binded, carried out on a large scale breaking through its scarce fraud, shorten work flow, make its manufacturing reliable more rapidly naturally, improved mass production efficient effectively; Because footwear limit piece 10 is in the semi-fluid condition combination at sole plastics 20, the flow regime stream of plastics has covered embedding hole 11, contact the side face of footwear limit piece 10 densely, so it is quite reliable in conjunction with fastness, durable, wind and weather can not cause yet and engage the problem that comes off, and can guarantee the permanence used; Because footwear limit piece 10 is for being shaped in advance, it can be independently with the coloured plastics material manufacturing, so do not need to take painting process to cover up, the utmost point is fugitive color not, even if flaw is arranged slightly, only needing slightly, touch-up paint gets final product, keep easily double-colored aesthetic, yet and make double-color and double-hardness in conjunction with quite from being difficult for fading; It can exempt the manufacture method of the glutinous agent of a large amount of uses, saves the time cost and the glutinous agent expense of bonding process, and can reduce production costs.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (2)
1, the sole injection foaming manufacture method of a kind of ethylene vinyl acetate copolymer double-color and double-hardness combination is characterized in that its manufacturing process is:
A: system is established footwear limit piece:
Making the appearance profile of footwear limit piece than the EVA plastics of hard, and footwear limit piece also forms the embedding hole that is provided with more than two simultaneously at the end face of shoes direction in opposite directions;
B: insert mould:
Footwear limit piece is inserted the predeterminated position of shoe-shaped die cavity in the foaming mould;
C: prepare the sole plastics:
Preparation than the EVA of softwood matter with as the sole plastics;
D: injection moulding coats:
Above-mentioned sole plastics are injected in foaming mould, and temperature is controlled to be 160～180 ℃, and the time was controlled within 5～10 minutes, makes sole plastics inflow die cavity and coats footwear limit piece;
E: die sinking:
Open mould to take out finished product;
F: finished product:
Finished product is put into the tunnel baking oven finalizes the design.
2, the sole injection foaming manufacture method of ethylene vinyl acetate copolymer double-color and double-hardness according to claim 1 combination is characterized in that described footwear limit piece can be different colors with the sole plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98119322A CN1074352C (en) | 1998-09-11 | 1998-09-11 | Injection molding and foaming process of double-color and double-hardness sole made of ethylene-ethyl acetate copolymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98119322A CN1074352C (en) | 1998-09-11 | 1998-09-11 | Injection molding and foaming process of double-color and double-hardness sole made of ethylene-ethyl acetate copolymer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1247798A CN1247798A (en) | 2000-03-22 |
| CN1074352C true CN1074352C (en) | 2001-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98119322A Expired - Fee Related CN1074352C (en) | 1998-09-11 | 1998-09-11 | Injection molding and foaming process of double-color and double-hardness sole made of ethylene-ethyl acetate copolymer |
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| CN (1) | CN1074352C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100411558C (en) * | 2005-05-17 | 2008-08-20 | 陈建合 | Method for making shoe soles |
| DE102007046187A1 (en) * | 2007-09-26 | 2009-04-09 | Bayer Materialscience Ag | roof module |
| CN102173073B (en) * | 2011-01-04 | 2013-08-14 | 安踏（中国）有限公司 | Method for manufacturing EVA (ethylene vinyl acetate copolymer) multi-color and multi-hardness sole |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29705868U1 (en) * | 1997-03-21 | 1997-07-24 | Wang Wayne | Multi-injection molded insole structure for footwear |
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1998
- 1998-09-11 CN CN98119322A patent/CN1074352C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29705868U1 (en) * | 1997-03-21 | 1997-07-24 | Wang Wayne | Multi-injection molded insole structure for footwear |
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| Publication number | Publication date |
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| CN1247798A (en) | 2000-03-22 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Baohong (Yangzhou) Shoe Making Co., Ltd. Assignor: Baocheng Industry Co., Ltd. Contract fulfillment period: 2009.12.25 to 2017.12.25 contract change Contract record no.: 2010990000031 Denomination of invention: Injection molding and foaming process of double-color and double-hardness sole made of ethylene-ethyl acetate copolymer Granted publication date: 20011107 License type: Exclusive license Record date: 2010.1.14 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.12.25 TO 2017.12.25; CHANGE OF CONTRACT Name of requester: BAOHONG( YANGZHOU )SHOEMAKING CO., LTD. Effective date: 20100114 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20011107 Termination date: 20120911 |