CN109834901A - A kind of midsole of TPU expanded beads and the integrally formed moulding process of shoes outsole - Google Patents
A kind of midsole of TPU expanded beads and the integrally formed moulding process of shoes outsole Download PDFInfo
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- CN109834901A CN109834901A CN201910239792.0A CN201910239792A CN109834901A CN 109834901 A CN109834901 A CN 109834901A CN 201910239792 A CN201910239792 A CN 201910239792A CN 109834901 A CN109834901 A CN 109834901A
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- expanded beads
- outsole
- steam
- tpu expanded
- integrally formed
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Abstract
The invention discloses a kind of midsoles of TPU expanded beads and the integrally formed moulding process of shoes outsole, comprising the following steps: is uniformly coated with one layer of hot melt adhesive on the binding face of outsole, is then put into the outsole of gluing in the master mold of steam compression molding forming machine；TPU expanded beads are sucked into mould inside, and are full of entire mold, the steam for being passed through high temperature after molding into mold carries out steam and penetrates；Secondary mould closing, carry out the steam of high temperature and pressure by TPU expanded beads surface micro- molten, and PU glue of the brush above outsole has been subjected to heating makes its fusing, make the micro- molten mutual pressurized adhesion of TPU expanded beads in the surface of mould inside together, and be bonded together via hot melt adhesive and following outsole；Product after being pressed and molded is subjected to water-cooled shaping, the sole of integrally formed TPU expanded beads is obtained after die sinking.Indsole is molded by moulding process of the invention and the adhesive bond with outsole, one-step shaping reduce production cost, improve production efficiency.
Description
Technical field
The present invention relates to footwear material technical field more particularly to a kind of midsole of TPU expanded beads and shoes outsole one at
The moulding process of type.
Background technique
Thermoplastic polyurethane material (TPU) is because having high abrasion, many advantages, such as high resiliency, chemical resistance, therefore very
Conglomerate is widely used, and TPU foamed material light weight, elasticity is good, is widely used in the fields such as footwear material, automobile interior decoration.
The indsole molding of currently marketed TPU expanded beads relies on steam compression molding, is melted after sizing using heat completely
Glue and outsole are bonded, and technical process is more, and many treatment of details, which still rely on, manually to be completed, and the degree of automation is low
Under.For example, needing to be aligned between indsole and outsole, according to the mode of artificial treatment, take considerable time, it is poor to be also easy to generate
It is wrong.
Therefore, those skilled in the art be dedicated to developing a kind of TPU expanded beads midsole and shoes outsole one at
Indsole is pressed and molded and is reduced to one-step shaping the step of bonding with outsole, to improve production efficiency by the moulding process of type.
Summary of the invention
In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to improve production efficiencys, to subtract
Few manual operation being largely bonded.
To achieve the above object, the present invention provides a kind of midsole of TPU expanded beads and shoes outsole are integrally formed
Moulding process, comprising the following steps:
Step 1: gluing: shoes outsole is made in advance, one layer of hot melt adhesive is uniformly coated on the binding face of outsole, then
It is put into steam compression molding forming machine after the outsole of gluing is packed into master mold；
Step 2: molding: adjusting die slot, TPU expanded beads are sucked mould inside, and be full of entire mold, after molding
The steam that high temperature is passed through into mold carries out steam and penetrates；
Step 3: secondary mould closing: TPU expanded beads are penetrated again by steam in a mold, make the steam of high temperature and pressure
TPU expanded beads surface is carried out micro- molten, and hot melt adhesive of the brush above outsole has been subjected to heating makes its fusing, made in mold
The micro- molten mutual pressurized adhesion of TPU expanded beads in the surface in portion together, and is bonded in one via hot melt adhesive and following outsole
It rises；
Step 4: sizing: the product after being pressed and molded being carried out water-cooled shaping processing, is obtained after die sinking integrally formed
The sole of TPU expanded beads.
Further, in step 1, the coating thickness of hot melt adhesive is 0.1-0.5mm.
Preferably, hot melt adhesive is PU glue.
Further, for the steam compression molding forming machine used for vertical molding machine, mold is folding up and down.
Further, in step 2, die slot 5-25mm.
Further, steam pressure when molding is 0.05-0.4MPa, and the time that steam penetrates is 10-60s.
Further, steam pressure when molding is set as 0.15-0.25MPa, and steam time of break-through is 10-30s.
Preferably, steam pressure when molding is set as 0.2MPa, and steam time of break-through is 30s.
Further, the time of water-cooled shaping is 60-150s.
Further, 40-50 DEG C is first naturally cooled to before water-cooled shaping.
Technical effect:
(1) shoes indsole of the invention and the integrally formed technique of shoes outsole, by coating hot melt adhesive is put into mold in advance
It is interior, then suck TPU expanded beads again and carry out steam and penetrate molding, this avoid the later period carry out outsole fitting it is caused at
The problems such as this height, low efficiency；
(2) only need to consume less hot melt adhesive can be realized the bonding effect of equality strength to the present invention, save cost,
The discharge for reducing the pernicious gas being discharged after hot melt adhesive heating, is also reduced the harm of operator and environment；
(3) integral molding techniques of the invention can widely be used in the molding shoes field of TPU expanded beads institute, can
Artificial and equipment required for the fitting of later period outsole is largely reduced, and substantially increases production efficiency.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is the composition schematic diagram of the sole portion in product of the present invention.
In figure, 1 midsole, 2 hot melt adhesive, 3 shoes outsoles.
Specific embodiment
It is as shown in Figure 1 the sole schematic diagram of product of the invention, which is that formed shoes are molded by TPU expanded beads
It is bonded between indsole 1 and shoes outsole 3 by hot melt adhesive 2.If the degree of automation is low using manually operation, also
Need for the profile of indsole to be aligned with the installation site in outsole, and integrally formed technique of the invention can reduce it is above-mentioned
Tedious steps, the following are specific embodiments.
Embodiment 1
The midsole and the integrally formed moulding process of shoes outsole of the TPU expanded beads of the present embodiment, steps are as follows:
The one side that rubber sole is bonded with indsole is uniformly coated into one layer of PU glue with a thickness of 0.5mm, is then placed in
It in the molding lower section master mold of midsole, is put into vertical steam compression molding forming machine, the mold of the molding machine is to open and close up and down；It adjusts
Die slot opens equipment to 10mm, TPU expanded beads is sucked mould inside, and fill full entire mold, to mold after molding
It is inside passed through steam, temperature is 100-130 DEG C in mold；Secondary mould closing is then begun to, is penetrated again by steam, high-temperature steam will
Particle surface carries out slightly soluble and is bonded together, and mutual extrusion between TPU expanded beads, gap is filled, while being applied in outsole
Glue dissolve, be bonded together with TPU particle, indsole is fitted closely with outsole, and the steam pressure that steam penetrates is set as
0.15MPa, steam time of break-through are 50s；Then, water-cooled shaping is carried out after naturally cooling to 40-50 DEG C, the water cooling time is set as
90s, die sinking, obtains final moulded products.
Embodiment 2
The midsole and the integrally formed moulding process of shoes outsole of the TPU expanded beads of the present embodiment, steps are as follows:
The one side that rubber sole is bonded with indsole is uniformly coated into one layer of PU glue with a thickness of 0.3mm, is then placed in
It in the molding lower section master mold of midsole, is put into vertical steam compression molding forming machine, the mold of the molding machine is to open and close up and down；It adjusts
Die slot opens equipment to 25mm, TPU expanded beads is sucked mould inside, and fill full entire mold, to mold after molding
It is inside passed through steam, temperature is 100-130 DEG C in mold；Secondary mould closing is then begun to, is penetrated again by steam, high-temperature steam will
Particle surface carries out slightly soluble and is bonded together, and mutual extrusion between TPU expanded beads, gap is filled, while being applied in outsole
Glue dissolve, be bonded together with TPU particle, indsole is fitted closely with outsole, and the steam pressure that steam penetrates is set as
0.05MPa, steam time of break-through are 60s；Then 40-50 DEG C is naturally cooled to, carries out water-cooled shaping, the setting of water cooling time later
For 60s, die sinking obtains final moulded products.
Embodiment 3
The midsole and the integrally formed moulding process of shoes outsole of the TPU expanded beads of the present embodiment, steps are as follows:
The one side that rubber sole is bonded with indsole is uniformly coated into one layer of PU glue with a thickness of 0.2mm, is then placed in
It in the molding lower section master mold of midsole, is put into vertical steam compression molding forming machine, the mold of the molding machine is to open and close up and down；It adjusts
Die slot opens equipment to 5mm, TPU expanded beads is sucked mould inside, and fill full entire mold, to mold after molding
It is inside passed through steam, temperature is 100-130 DEG C in mold；Secondary mould closing is then begun to, is penetrated again by steam, high-temperature steam will
Particle surface carries out slightly soluble and is bonded together, and mutual extrusion between TPU expanded beads, gap is filled, while being applied in outsole
Glue dissolve, be bonded together with TPU particle, indsole is fitted closely with outsole, and the steam pressure that steam penetrates is set as
0.4MPa, steam time of break-through are 10s；Then 40-50 DEG C is naturally cooled to, carries out water-cooled shaping, the setting of water cooling time later
For 150s, die sinking obtains final moulded products.
Embodiment 4
The midsole and the integrally formed moulding process of shoes outsole of the TPU expanded beads of the present embodiment, steps are as follows:
The one side that rubber sole is bonded with indsole is uniformly coated into one layer of PU glue with a thickness of 0.3mm, is then placed in
It in the molding lower section master mold of midsole, is put into vertical steam compression molding forming machine, the mold of the molding machine is to open and close up and down；It adjusts
Die slot opens equipment to 12mm, TPU expanded beads is sucked mould inside, and fill full entire mold, to mold after molding
It is inside passed through steam, temperature is 100-130 DEG C in mold；Secondary mould closing is then begun to, is penetrated again by steam, high-temperature steam will
Particle surface carries out slightly soluble and is bonded together, and mutual extrusion between TPU expanded beads, gap is filled, while being applied in outsole
Glue dissolve, be bonded together with TPU particle, indsole is fitted closely with outsole, and the steam pressure that steam penetrates is set as
0.2MPa, steam time of break-through are 30s；Then 40-50 DEG C is naturally cooled to, carries out water-cooled shaping, the setting of water cooling time later
For 100s, die sinking obtains final moulded products.
Performance Evaluation
1, folding quality is assessed
The product after molding of above-mentioned each embodiment is carried out to the test of folding quality according to GB/T 3903.1.Through surveying
Examination, the folding of each embodiment is equal > and 200000 times, flawless, and be well combined between midsole and shoes outsole, no cracking.
2, sole bond strength is assessed
It by the product of above-mentioned each embodiment, is detected according to GB/T 532, outsole and middle bear building-up is intercepted on product
Section is closed as sample, each sample intercepts identical size, and width is 25 ± 0.5mm, and each side for clamping outsole and indsole is backward
Opposite direction separation, the power needed for stripping method measurement adhesive interface separation.
The result of above-mentioned performance test is as shown in the table:
| Embodiment | Folding number | Whether there is or not crackings | Adhesive strength |
| Embodiment 1 | >200000 | Nothing | 41.9N/cm |
| Embodiment 2 | >200000 | Nothing | 40.5N/cm |
| Embodiment 3 | >200000 | Nothing | 39N/cm |
| Embodiment 4 | >200000 | Nothing | 44.2N/cm |
The shoes outsole fitting intensity of the finished product as made from integrally formed technique is not less than 39N/cm.
By the above results, technique of the invention, the relatively manually mode of gluing, thickness is relative to traditional approach
(rubberization thickness is greater than 0.5mm) is reduced, and the feature of environmental protection is improved, using shoes indsole and the integrally formed work of shoes outsole
Skill, high in machining efficiency, product has high folding quality and stronger adhesive strength.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without
It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of midsole of TPU expanded beads and the integrally formed moulding process of shoes outsole, which is characterized in that including following step
It is rapid:
Step 1: gluing: shoes outsole is made in advance, one layer of hot melt adhesive is uniformly coated on the binding face of outsole, then will apply
The outsole of glue is put into steam compression molding forming machine after being packed into master mold；
Step 2: molding: adjusting die slot, TPU expanded beads are sucked mould inside, and be full of entire mold, Xiang Mo after molding
The steam that high temperature is passed through in tool carries out steam and penetrates；
Step 3: secondary mould closing: TPU expanded beads are penetrated again by steam in a mold, make the steam of high temperature and pressure by TPU
Expanded beads surface carries out micro- molten, and hot melt adhesive of the brush above outsole is carried out heating makes its fusing, make the table of mould inside
The micro- molten mutual pressurized adhesion of TPU expanded beads in face together, and is bonded together via hot melt adhesive and following outsole；
Step 4: sizing: the product after being pressed and molded being carried out water-cooled shaping processing, integrally formed TPU is obtained after die sinking
The sole of expanded beads.
2. the midsole of TPU expanded beads as described in claim 1 and the integrally formed moulding process of shoes outsole, feature exist
In in step 1, the coating thickness of hot melt adhesive is 0.1-0.5mm.
3. the midsole of TPU expanded beads as described in claim 1 and the integrally formed moulding process of shoes outsole, feature exist
In hot melt adhesive is PU glue.
4. the midsole of TPU expanded beads as described in claim 1 and the integrally formed moulding process of shoes outsole, feature exist
In for the steam compression molding forming machine used for vertical molding machine, mold is folding up and down.
5. the midsole of TPU expanded beads as described in claim 1 and the integrally formed moulding process of shoes outsole, feature exist
In, in step 2, die slot 5-25mm.
6. the midsole of TPU expanded beads as described in claim 1 and the integrally formed moulding process of shoes outsole, feature exist
Steam pressure when, molding is 0.05-0.4MPa, and the time that steam penetrates is 10-60s.
7. the midsole of TPU expanded beads as claimed in claim 6 and the integrally formed moulding process of shoes outsole, feature exist
Steam pressure when, molding is set as 0.15-0.25MPa, and steam time of break-through is 10-30s.
8. the midsole of TPU expanded beads as claimed in claim 7 and the integrally formed moulding process of shoes outsole, feature exist
Steam pressure when, molding is set as 0.2MPa, and steam time of break-through is 30s.
9. the midsole of TPU expanded beads as described in claim 1 and the integrally formed moulding process of shoes outsole, feature exist
In the time of water-cooled shaping is 60-150s.
10. the midsole of TPU expanded beads as claimed in claim 9 and the integrally formed moulding process of shoes outsole, feature
It is, 40-50 DEG C is first naturally cooled to before water-cooled shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239792.0A CN109834901A (en) | 2019-03-27 | 2019-03-27 | A kind of midsole of TPU expanded beads and the integrally formed moulding process of shoes outsole |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910239792.0A CN109834901A (en) | 2019-03-27 | 2019-03-27 | A kind of midsole of TPU expanded beads and the integrally formed moulding process of shoes outsole |
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| CN109834901A true CN109834901A (en) | 2019-06-04 |
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| CN201910239792.0A Pending CN109834901A (en) | 2019-03-27 | 2019-03-27 | A kind of midsole of TPU expanded beads and the integrally formed moulding process of shoes outsole |
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Cited By (5)
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| CN110667222A (en) * | 2019-09-30 | 2020-01-10 | 宁波格林美孚新材料科技有限公司 | Multilayer composite product and preparation process thereof |
| CN111820537A (en) * | 2020-05-29 | 2020-10-27 | 福建兴迅新材料科技有限公司 | ETPU shock absorption insole and rubber outsole integrated forming process |
| CN113524552A (en) * | 2021-07-28 | 2021-10-22 | 广东奔迪新材料科技有限公司 | One-step forming method of high polymer particle foamed shoe insole, shoe outsole and shoe vamp and product |
| CN114523703A (en) * | 2022-03-14 | 2022-05-24 | 泉州耐保鞋业有限公司 | Method for manufacturing double-color double-density sole |
| CN115476520A (en) * | 2022-08-26 | 2022-12-16 | 东莞市福源纺织有限公司 | Method for preventing edge burst of shoe footbed parting line |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110667222A (en) * | 2019-09-30 | 2020-01-10 | 宁波格林美孚新材料科技有限公司 | Multilayer composite product and preparation process thereof |
| CN111820537A (en) * | 2020-05-29 | 2020-10-27 | 福建兴迅新材料科技有限公司 | ETPU shock absorption insole and rubber outsole integrated forming process |
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| CN114523703B (en) * | 2022-03-14 | 2023-09-22 | 泉州耐保鞋业有限公司 | Manufacturing method of double-color double-density sole |
| CN115476520A (en) * | 2022-08-26 | 2022-12-16 | 东莞市福源纺织有限公司 | Method for preventing edge burst of shoe footbed parting line |
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Application publication date: 20190604 |