CN205409883U

CN205409883U - PU puffed rice sole

Info

Publication number: CN205409883U
Application number: CN201521073479.8U
Authority: CN
Inventors: 丁荣誉
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-22
Filing date: 2015-12-22
Publication date: 2016-08-03
Anticipated expiration: 2025-12-22

Abstract

The utility model provides a PU puffed rice sole, includes the insole shoes material and the big end of shoes, insole shoes material includes that a PU basic unit and a plurality of evenly mixes and locates the intraformational TPU puffed rice foaming particle of this PU base. The utility model has the advantages of simple structure, therefore, the clothes hanger is strong in practicability, through setting up the mixture of TPU puffed rice granule in current PU raw materials, adopt current PU's production technology, thereby it is equipped with TPU puffed rice granule to mix uniformly in the feasible PU sole that makes, thereby carry out the performance improvement to current PU sole effectively, can improve the compliance of PU sole effectively, it is lighter to make its weight, the gas permeability is stronger, make its advantage that has PU sole and novel TPU foaming sole concurrently, need not purchase novel board again when putting into production simultaneously, both can reduce energy consumption and cost, the color and the style that can improve again and expand the sole.

Description

A kind of PU puffed rice sole

Technical field

This utility model relates to a kind of footwear material, refers in particular to a kind of PU puffed rice sole.

Background technology

Along with successfully bidding for 2008 Olympics in Beijing, increasing Chinese start to make earnest efforts the various sports of what, and high performance sport shoes the most just becomes commodity in short supply.As the rubber that continues, the forth generation material for sole of shoe of the Hou of PVC, SBS, TPU (Polyurethane Thermoplastic Elastomer) has more excellent elasticity, wearability, tear resistance and bendability, is one of high sole preferred material of special purpose shoes such as football boot, ice skates, climbing boot etc. of various requirement.

The material being currently used for athletic shoe sole production mainly has PVC, PU, EVE and TPU, and TPU therein is highlighted by what performance and has environmental protection concept, starts to show up prominently.PVC's is cheap, but hardening when temperature is low easy to break splits, easily deliquescing again during temperature height, and PVC can discharge harmful dioxin to have medical research to prove, the large-scale sporting goods manufacturer such as NIKE of advanced country etc. is the most progressively with material substitution PVC such as TPU；PU material weight is light, heat-resist, abrasion resistance is good, life-span length, price are relatively low, but the cost of investment of special project is high (machine, mould and raw material), and finished product is difficult to again recycle；The pliability of EVE, elastic good, chemicals-resistant and tinctorial property are excellent, but production technology is relative complex, use to enclose and are confined in the enclosing of medium-to-high grade sport shoes.And TPU has that wearability is strong, tensile strength and the advantage such as elongation at break is high, against weather is good, although at hardness, weight and Shortcomings in price, but in general, the application market of TPU is the most extensive.

For now, " ClimaCoolTM " up-to-date series exploitation of Adidas (adidas) gas venting system of 360 degree.The sole of these series of products, stiffener, protectiveness toe cap and shock absorbing part all have employed TPU elastomer.The fine mesh face of breathing freely of sole makes fresh air be able to from bottom and flows to shoes, and meanwhile, special shoe pad plays the effect of fan, makes the air in footwear keep circulation, and its result is that the heat making generation decreases 20%.

It is TPU foam process that existing TPU is applied to the technique employed in the production of footwear material, and so-called " TPU foam process " similarly is puffed rice in fact, TPU is made graininess, these granules can be thought of as the corn of.Then throw in a machine, this machine is similar to corn popper, then after High Temperature High Pressure, these Semen Maydiss become puffed rice, use steam mould pressing process that the puffed rice granule of about 2000 is processed into required sole shape afterwards, expanded beads outermost layer slightly melts and adhesion becomes stable shaped in this process, and internal porosity structure is unaffected simultaneously.After sole receives pressure, being compressible to half size, significantly alleviate the shaking force that sole is born, after compression stress disappears, sole can be promptly restored to original shape.

Above TPU makes sole process and generally requires and purchase novel board, and needs to carry out long-time steam mold pressing, and complicated process of preparation and cost and energy consumption are higher.

Utility model content

This utility model provides a kind of PU puffed rice sole, and its main purpose is the relatively costly defect overcoming existing TPU foamed shoe sole to exist.

For solving above-mentioned technical problem, this utility model adopts the following technical scheme that

A kind of PU puffed rice sole, including midsole shoe material and the footwear big end, said midsole footwear material includes a PU basic unit and a plurality of uniformly mixes the TPU puffed rice expanded beads being located in this PU basic unit.

Further, described TPU puffed rice expanded beads is rounded or oval spherical.

Further, a diameter of 30 μm of described TPU puffed rice expanded beads～300 μm.

Further, said midsole footwear material includes one first end face, one first bottom surface being oppositely arranged in parallel with this first end face and is extended to an arc joint face of the first bottom surface periphery by this first end face periphery, the described footwear big end, is provided with one for housing the cell body of midsole shoe material, this cell body includes a notch suitable with described first end face size, be positioned at immediately below this notch and the bottom land suitable with described first bottom surface size and being extended to bottom land by this notch and the curved wall that formed, and this curved wall is coated on the outer wall of described arc joint face.

Further, the described footwear big end, is provided with a transparent air cushion in the outside of its cell body position.

Further, the top of described transparent air cushion is provided with one and upwardly extends and for accepting the binding face of vamp.

Further, described TPU puffed rice expanded beads at least includes one first tone TPU material puffed rice expanded beads, and described PU basic unit is one second tone PU material base layer.

Compared to the prior art, what this utility model produced has the beneficial effects that:

1, this utility model simple in construction, practical, by arranging, TPU puffed rice granule is mixed in existing PU raw material, use the production technology of existing PU, it is provided with TPU puffed rice granule so that mix equably in the PU sole prepared, thus effectively existing PU sole is carried out improved properties, the flexibility of PU sole can be effectively improved, make its weight lighter, breathability is higher, make it with PU sole and the advantage of novel TPU foamed shoe sole, need not again purchase novel board producing when simultaneously, both energy consumption and cost can have been reduced, can improve and expand again color and the style of sole.

2, in this utility model, by sole being arranged to by the middle end of footwear big end cladding PU puffed rice, owing to middle bottom materials is softer, so that user is in donning process, can help to disperse the pressure of sole, alleviate step pressure and can absorb walking time the concussion that is subject to, thus eliminate largely caused by long-time donning process pain, bring comfortable happy experience to user.

3, in this utility model, described TPU puffed rice granule can increase the rich of sole color by using different tones with PU raw material, be conducive to improving the multiformity of product, such that it is able to provide another kind to prepare double-color sole or the new technology of polychrome sole, and the double-color sole prepared or polychrome sole not only have the excellent damping character that other techniques cannot produce, and need not repeatedly more preferable mould, such that it is able to greatly save equipment cost, and improve production efficiency.

4 it addition, in this utility model, described PU rice krispies embroidered shoes material also has the property that

A, ultralight density: density range is between 0.15-0.25g/cm3, thus corresponding existing PU footwear material, its matter is lighter；

B, high resilience: the resilience of PU rice krispies embroidered shoes material is up to more than 60%；

C, high-wearing feature: the abrasion loss test value of PU rice krispies embroidered shoes material is less than 53mm3；

D, high folding resistance: PU rice krispies embroidered shoes material folding number is higher than 120,000 times；

E, cryogenic property are good: at subzero 20 DEG C, and PU rice krispies embroidered shoes material still maintains good pliability；

F, the feature of environmental protection: PU rice krispies embroidered shoes material and whole preparation technology are environmental protection.

G, yellowing resistance: PU rice krispies embroidered shoes material color inhibition.

Accompanying drawing explanation

Fig. 1 is the structural representation of PU puffed rice sole described in this utility model.

Fig. 2 is the generalized section one of PU puffed rice sole described in this utility model.

Fig. 3 is the generalized section two of PU puffed rice sole described in this utility model.

Detailed description of the invention

Detailed description of the invention of the present utility model is described with reference to the accompanying drawings.

With reference to Fig. 1, Fig. 2 and Fig. 3.A kind of PU puffed rice sole, including midsole shoe material 1 and the footwear big end 2, said midsole footwear material 1 includes a PU basic unit 10 and a plurality of uniformly mixes the TPU puffed rice expanded beads 11 being located in this PU basic unit 10.Wherein, described TPU puffed rice expanded beads 11 is rounded or oval spherical.A diameter of 30 μm of described TPU puffed rice expanded beads 11～300 μm.By arranging, TPU puffed rice granule is mixed in existing PU raw material; use the production technology of existing PU; it is provided with TPU puffed rice granule so that mix equably in the PU sole prepared; thus effectively existing PU sole is carried out improved properties; the flexibility of PU sole can be effectively improved; make that its weight is lighter, breathability is higher; make it with PU sole and the advantage of novel TPU foamed shoe sole; need not again purchase novel board producing when simultaneously; both energy consumption and cost can be reduced, color and the style of sole can be improved and expand again.

With reference to Fig. 1, Fig. 2 and Fig. 3.Said midsole footwear material 1 includes one first end face 12, one first bottom surface 13 being oppositely arranged in parallel with this first end face 12 and the arc joint face 14 being extended to the first bottom surface 13 periphery by this first end face 12 periphery, the described footwear big end 2, is provided with one for housing the cell body 20 of midsole shoe material 1, this cell body 20 includes a notch suitable with described first end face 12 size, it is positioned at immediately below this notch and the bottom land suitable with described first bottom surface 13 size and being extended and the curved wall that formed to bottom land by this notch, this curved wall is coated on the outer wall of described arc joint face 14.It is coated with the middle end of PU puffed rice by being arranged to by sole by the footwear big end 2, owing to middle bottom materials is softer, so that user is in donning process, can help to disperse the pressure of sole, alleviate step pressure and can absorb walking time the concussion that is subject to, thus eliminate largely caused by long-time donning process pain, bring comfortable happy experience to user.

With reference to Fig. 1, Fig. 2 and Fig. 3.The described footwear big end 2, is provided with a transparent air cushion 21 in the outside of its cell body 20 position, and the top of this transparent air cushion 21 is provided with one and upwardly extends and for accepting the binding face 22 of vamp.With reference to Fig. 1, Fig. 2 and Fig. 3.Described TPU puffed rice expanded beads 11 at least includes one first tone TPU material puffed rice expanded beads, and described PU basic unit 10 is one second tone PU material base layer.Described TPU puffed rice granule can increase the rich of sole color by using different tones with PU raw material, be conducive to improving the multiformity of product, such that it is able to provide another kind to prepare double-color sole or the new technology of polychrome sole, and the double-color sole prepared or polychrome sole not only have the excellent damping character that other techniques cannot produce, and need not repeatedly more preferable mould, such that it is able to greatly save equipment cost, and improve production efficiency.

With reference to Fig. 1, Fig. 2 and Fig. 3.The preparation method of midsole shoe material 1 of the present utility model is the preparation technology of a kind of PU rice krispies embroidered shoes material, and it comprises the following steps:

A, selection are got the raw materials ready: choose TPU puffed rice expanded beads 11 and PU raw material；With TPU puffed rice expanded beads 11 be 60% weight ratio, PU raw material be 40% weight ratio, under 50～70 degree Celsius, be stirred mixing form material rice mixed liquor.In this step, described TPU puffed rice expanded beads 11 first uses following technique to be prepared from: by physical blowing method, use gas phase Differential Principle, supercritical fluid is permeated TPU feed stock material, form polymer/gas homogenous system, utilize intensification voltage drop method, destroy the poised state of material internal polymer/gas homogenous system, TPU material internal forms nuclei of bubbles sizing of growing up, and obtains TPU material puffed rice expanded beads.After gas phase differential pretreatment, the granule of 5 mm in sizes can expand as puffed rice, in this process, the volume of the oval granule including encapsulated bubble will increase 2-3 times, its inner cell is wrapped in substantial amounts of gas, cell diameter is from 30 microns to 300 microns, and these encapsulated bubble can give expanded beads with excellent elasticity and resilience effect.

B, foaming: material rice mixed liquor step a prepared is poured in footwear material mould, coordinate foaming agent foam molding.

The PU rice krispies embroidered shoes material using above-mentioned technique to prepare also has the property that

1, ultralight density: density range is between 0.15-0.25g/cm3, thus corresponding existing PU footwear material, its matter is lighter；

2, high resilience: the resilience of PU rice krispies embroidered shoes material is up to more than 60%；

3, high-wearing feature: the abrasion loss test value of PU rice krispies embroidered shoes material is less than 53mm3；

4, high folding resistance: PU rice krispies embroidered shoes material folding number is higher than 120,000 times；

5, cryogenic property is good: at subzero 20 DEG C, and PU rice krispies embroidered shoes material still maintains good pliability；

6, the feature of environmental protection: PU rice krispies embroidered shoes material and whole preparation technology are environmental protection.

7, yellowing resistance: PU rice krispies embroidered shoes material color inhibition.

Above are only detailed description of the invention of the present utility model, but design concept of the present utility model is not limited thereto, all changes utilizing this design that this utility model carries out unsubstantiality, the behavior invading this utility model protection domain all should be belonged to.

Claims

1. a PU puffed rice sole, including midsole shoe material and the footwear big end, it is characterised in that: said midsole footwear material includes a PU basic unit and a plurality of uniformly mixes the TPU puffed rice expanded beads being located in this PU basic unit.

2. a kind of PU puffed rice sole, it is characterised in that: described TPU puffed rice expanded beads is rounded or oval spherical.

3. a kind of PU puffed rice sole, it is characterised in that: a diameter of 30 μm of described TPU puffed rice expanded beads～300 μm.

4. a kind of PU puffed rice sole, it is characterized in that: said midsole footwear material includes one first end face, one first bottom surface being oppositely arranged in parallel with this first end face and the arc joint face being extended to the first bottom surface periphery by this first end face periphery, the described footwear big end, is provided with one for housing the cell body of midsole shoe material, this cell body includes a notch suitable with described first end face size, it is positioned at immediately below this notch and the bottom land suitable with described first bottom surface size and being extended and the curved wall that formed to bottom land by this notch, this curved wall is coated on the outer wall of described arc joint face.

5. a kind of PU puffed rice sole, it is characterised in that: the described footwear big end, is provided with a transparent air cushion in the outside of its cell body position.

6. a kind of PU puffed rice sole, it is characterised in that: the top of described transparent air cushion is provided with one and upwardly extends and for accepting the binding face of vamp.

7. a kind of PU puffed rice sole, it is characterised in that: described TPU puffed rice expanded beads at least includes one first tone TPU material puffed rice expanded beads, and described PU basic unit is one second tone PU material base layer.