CN220800217U - Light high-elastic air bag module and shoes - Google Patents
Light high-elastic air bag module and shoes Download PDFInfo
- Publication number
- CN220800217U CN220800217U CN202322313312.5U CN202322313312U CN220800217U CN 220800217 U CN220800217 U CN 220800217U CN 202322313312 U CN202322313312 U CN 202322313312U CN 220800217 U CN220800217 U CN 220800217U
- Authority
- CN
- China
- Prior art keywords
- layer
- composite
- module
- air
- sole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001125 extrusion Methods 0.000 claims abstract description 84
- 239000000463 material Substances 0.000 claims abstract description 76
- 239000002131 composite material Substances 0.000 claims abstract description 70
- 238000005187 foaming Methods 0.000 claims abstract description 53
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 claims abstract description 30
- 239000004952 Polyamide Substances 0.000 claims description 21
- 229920002647 polyamide Polymers 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 12
- 230000008093 supporting effect Effects 0.000 claims description 10
- 230000035939 shock Effects 0.000 claims description 7
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 6
- 229920005672 polyolefin resin Polymers 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009736 wetting Methods 0.000 claims description 3
- 239000005038 ethylene vinyl acetate Substances 0.000 description 23
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 23
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 22
- 239000007789 gas Substances 0.000 description 19
- 238000007731 hot pressing Methods 0.000 description 18
- 230000004888 barrier function Effects 0.000 description 14
- 229920002614 Polyether block amide Polymers 0.000 description 13
- VPRUMANMDWQMNF-UHFFFAOYSA-N phenylethane boronic acid Chemical compound OB(O)CCC1=CC=CC=C1 VPRUMANMDWQMNF-UHFFFAOYSA-N 0.000 description 13
- 230000008569 process Effects 0.000 description 11
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 10
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 10
- 239000004698 Polyethylene Substances 0.000 description 7
- 229920001971 elastomer Polymers 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 4
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000001739 rebound effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Landscapes
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The utility model provides a lightweight high-elastic air bag module and a shoe, wherein the lightweight high-elastic air bag module comprises: the outer layer is a composite co-extrusion film, a closed inner cavity is defined by the composite co-extrusion film, the inner layer is made of a supercritical foaming material, and the inner cavity is filled with the supercritical foaming material; the composite co-extrusion film comprises an ethylene vinyl alcohol copolymer layer. The utility model has the advantages that: the air bag module has stronger air locking capability, is not easy to deform, has better rebound resilience and better stability, and can meet the functional requirements of more professional sports scenes; the problems that the air escape exists in the independent air cushion material, the air pressure of the air cushion is reduced, the resilience force is reduced and the like are overcome, and the inherent performance of the supercritical foaming material is improved in a simpler mode.
Description
Technical Field
The utility model relates to the field of cushioning materials, in particular to a light high-elastic air bag module and a shoe.
Background
The technology of the Air cushion for the sports shoes is invented by NIKE company 1978 and is widely applied to soles at present, wherein the Air cushion in the form of Air sole is formed by filling rubber or elastomer bags with high-pressure gas to seal the rubber or elastomer bags, thereby forming a soft Air bag.
The air cushion in the Zoom shape is thinner and is closer to the ground, so that the reaction speed can be faster. Among the Nike brand air cushions, the Zoom type air cushion has better elasticity, and is often arranged on the half sole part of the basketball shoes and matched with other cushioning technologies for use.
Reebok also uses more air cushions, and the core damping technology DMX is an air cushion technology, and is divided into a plurality of air chambers which are communicated with each other, and air between the air chambers can flow mutually in motion so as to play the effects of damping and partial pressure.
The conventional air cushion material for shoes is usually made of TPU, PVC, rubber and other materials, and has the defects of easy air leakage, hard material, low rebound resilience, poor foot comfort and the like when worn for a long time, although the cushioning effect is good.
The concrete steps are as follows: (1) The pressure of the air in the air cushion is 0.06-0.1MPa, the air pressure cannot be too high, otherwise, the air cushion is easy to bulge and deform, so that the air cushion leaks air, and the rebound resilience is reduced; (2) If the air pressure in the air cushion is required to be increased, high-strength fiber materials are required to be compounded in the air cushion wall layer to avoid the deformation of the air cushion, and the supporting force is provided for the upper and lower air cushion walls, but the compounding difficulty is high, the cost is high, and the internal air pressure is limited to be lifted; (3) The air in the common air cushion is not blocked, and the air is easy to flow under the condition of uneven compression, so that the air cushion is deformed unevenly to cause the stability of the sole to be reduced; (4) For the air cushion with the independent barrier layer in the air cushion, the gas barrier property is still not good enough, after the air cushion is worn for a period of time, the problems that cracks are easy to generate on the barrier layer and the like exist, and the defects that the gas escapes, the air pressure of the air cushion is reduced, the resilience force is reduced, the supporting property is gradually lost and the like.
Disclosure of utility model
Aiming at the defects of easy air leakage, hard material, low rebound resilience, poor foot comfort and the like of the air cushion for shoes in the prior art when being worn for a long time, the utility model provides a light high-elasticity air bag module and shoes. The light high-elastic air bag module is simple in processing mode and obvious in performance improvement.
The technical scheme of the utility model is as follows: a lightweight high-elastic airbag module, comprising: the outer layer is a composite co-extrusion film, a closed inner cavity is defined by the composite co-extrusion film, the inner layer is made of a supercritical foaming material, and the inner cavity is filled with the supercritical foaming material; the composite coextruded film includes an ethylene vinyl alcohol copolymer layer.
Further, the composite co-extrusion film comprises 5-11 layers of co-extrusion films, and the ethylene vinyl alcohol copolymer layer is arranged in the middle of the composite co-extrusion film.
Further, the co-extruded film further comprises at least one of a polyolefin resin layer and a polyamide layer; the polyolefin resin comprises at least one of polypropylene, polyethylene, and ethylene-octene copolymer.
Further, the total thickness of the composite co-extrusion film is 50-300 mu m, wherein the thickness of the ethylene vinyl alcohol copolymer layer is 2-20 mu m, the tensile strength of the composite co-extrusion film is more than or equal to 15MPa, the elongation at break is more than or equal to 500%, the haze is less than or equal to 25, the friction coefficient is less than or equal to 0.5, the wetting tension is more than or equal to 38, the heat sealing temperature is 120-150 ℃, the heat sealing strength is more than or equal to 15MPa, the oxygen transmission rate is less than or equal to 3.0cc/m 2.24 h.atm, and the water vapor transmission rate is less than or equal to 5.0g/m 2 h.
The utility model also provides a shoe comprising the lightweight high-elastic air bag module. The airbag module is arranged at the sole part.
Further, the sole comprises an airbag module layer, wherein the airbag module layer specifically comprises a half sole airbag area and is used for accommodating the airbag module; the airbag module in the half sole airbag area protrudes out of rebound energy, and the airbag module in the rear sole airbag area protrudes out of shock absorption performance.
Further, the support module layer is arranged above the air bag module layer, the support module layer is made of hard materials, holes with corresponding sizes are formed in the support module layer according to the shape of the air bag module layer and are used for being embedded in the outer sides of different partitions of the air bag module, and the air bag module layer forms support.
Further, the sole is arranged below the airbag module layer, and the shape of the sole is set into a shell for accommodating different airbag modules according to the shape of the airbag module layer so as to ensure that a single airbag area can independently play a role.
Further, a supporting module layer is arranged below the air bag module layer and above the shoe outsole.
The utility model has the advantages that: the air bag module has stronger air locking capability, is not easy to deform, has better rebound resilience and better stability, and can meet the functional requirements of more professional sports scenes; the problems that the air escape exists in the independent air cushion material, the air pressure of the air cushion is reduced, the resilience force is reduced and the like are overcome, and the inherent performance of the supercritical foaming material is improved in a simpler mode.
The air bag module has wider overall performance adjustable range than that of a common air cushion, so that the air bag module has wider application range than that of a traditional air cushion, and can be suitable for soles or sole parts of different purposes.
Drawings
FIG. 1 is a schematic view of a single airbag module
FIG. 1 (a) is a front view of an airbag module, and FIG. 1 (b) is a cross-sectional view of the airbag module;
FIG. 2 is a schematic diagram of a single airbag module configuration;
FIG. 3 is a schematic illustration of a whole shoe including a plurality of bladder modules;
FIG. 4 is a schematic view of a sole including a plurality of bladder modules;
fig. 5 is an exploded view of an entire shoe including a plurality of airbag modules.
Detailed Description
The following description of the embodiments of the present utility model will be made in detail and with reference to the accompanying drawings, wherein it is apparent that the embodiments described are only some, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
According to the utility model, the composite co-extruded film with excellent air tightness and high strength and the supercritical foaming material are adopted for composite body molding, more than 10 7 cells are usually arranged in each cubic centimeter of the supercritical fluid foaming material, so that gas can be locked in the cells, the gas does not flow in the air bags, the composite film with high air tightness is overlapped to cooperate, the module has stronger gas locking capability, the inside of the module can lock larger pressure (0.5-0.8 MPa) by adjusting different pressures in the air bags, the air bags are not easy to deform, the rebound resilience is better, and the stability is better, so that the functional requirements of professional sports scenes are met.
The composite co-extrusion film comprises 5-11 layers of co-extrusion films, the total thickness of the composite co-extrusion film is 50-300 mu m, and the composite co-extrusion film is more light and thin compared with 800-1200 mu m of the traditional air cushion for shoes; the ethylene vinyl alcohol copolymer (EVOH) layer in the co-extrusion film is arranged in the middle position, so that the co-extrusion film has higher gas barrier property; the rest of the co-extrusion film comprises at least one type of polyolefin resin layer and Polyamide (PA) layer; the polyolefin resin includes: at least one of polypropylene (PP), polyethylene (PE), and ethylene-octene copolymer (POE).
The film made of the materials is subjected to 5-11 layers of coextrusion, compounding and blow molding to form a composite coextrusion film; when the EVOH is used in the middle layer, the characteristics of excellent gas barrier property, excellent body adhesion property, high transparency, excellent sealing property and the like can be better exerted.
The overall physical properties of the obtained composite co-extrusion film are as follows: the thickness is 50-300um, wherein the EVOH layer has a thickness of 2-20um, the tensile strength of the composite co-extruded film is more than or equal to 15MPa, the elongation at break is more than or equal to 500%, the haze is less than or equal to 25, the friction coefficient is less than or equal to 0.5, the wetting tension is more than or equal to 38, the heat sealing temperature is 120-150 ℃, the heat sealing strength is more than or equal to 15MPa, the oxygen transmission rate is less than or equal to 3.0cc/m 2.24 h.atm, and the water vapor transmission rate is less than or equal to 5.0g/m 2.24 h.
The material for supercritical foaming in the utility model comprises the following components: at least one of aliphatic thermoplastic polyurethane or aromatic Thermoplastic Polyurethane (TPU), polyether ester elastomer (TPEE), polyamide Elastomer (PEBA), ethylene vinyl acetate copolymer (EVA) and blending modified materials thereof.
The principle of the utility model is mainly to form a cell structure which is uniformly arranged and wraps gas inside by utilizing supercritical foaming, and compared with the material obtained by the common foaming process, the supercritical foaming has lighter density and better rebound resilience. The utility model is the sharp research and discovers that the air bag structure formed by the composite co-extrusion film with the EVOH middle layer and the supercritical foaming material body has physical properties far superior to those of the two materials, and the practical performance of the composite co-extrusion film for the middle sole is better; the problems that the air escape exists in the independent air cushion material, the air pressure of the air cushion is reduced, the resilience force is reduced and the like are overcome, and the inherent performance of the supercritical foaming material is improved in a simpler mode.
As shown in fig. 1 and 2, the air bag module comprises an outer layer 1 and an inner layer 2, wherein the outer layer 1 adopts the composite co-extrusion film, an inner cavity is surrounded by the composite co-extrusion film, and a supercritical foaming material is filled in the inner cavity to serve as the inner layer 2.
Specifically, the preparation method of the light high-elastic air bag module comprises the following steps:
s1, performing plastic suction molding on a selected film material in a heating die to obtain a composite co-extrusion film;
S2, placing the selected polymer material into two composite co-extrusion films after supercritical foaming, hot-pressing and plastic-sucking forming the two composite co-extrusion films together, and sealing the edges by using a high-frequency or hot-pressing process; an airbag module is obtained.
The performance of the final air bag module can be regulated in multiple aspects of film materials, supercritical foaming processes and the like, and the obtained air bag module has wider range of application than that of a conventional air cushion due to wider regulating range of overall performance than that of the conventional air cushion, so that the air bag module is applicable to soles or sole parts of different purposes.
In this regard, the present utility model also provides a shoe including the airbag module, as shown in fig. 3 and 4, the sole includes an airbag module layer 3, and the airbag module layer specifically includes a half sole airbag region 31 and a half sole airbag region 32, where the half sole airbag region 31 is divided into two parts, i.e., an inner side 311 and an outer side 312, and the half sole airbag region 32 is divided into two parts, i.e., an inner side 321 and an outer side 322. The half sole airbag region 31 mainly stands out for rebound performance, and the rear sole airbag region 32 mainly stands out for shock absorbing performance. The inner side and the outer side of the half sole air bag area 31 and the rear sole air bag area 32 can be designed with slightly different functional parameters, and different air bags can be arranged, namely, the whole sole part can be provided with a plurality of air bags in a combined mode so as to meet different movement requirements.
Fig. 5 is an exploded view of a shoe with an airbag module, a support module layer 4 is provided above an airbag module layer 3, the support module layer 4 may be a carbon plate or other hard material, the support module layer 4 is located above the airbag module layer, and is beneficial to support the airbag module layer 3, so that the airbag module layer 3 can better exert the action effect of a plurality of airbag modules, the support module layer 4 can be integrally provided with the airbag module layer 3 according to needs, and the shape of the support module layer 4 can be designed into different shapes according to the lower airbag module layer 3, for example: holes of corresponding size are provided for embedding outside the different sections of the airbag module 3 to ensure the functioning of the individual airbag modules. The sole 5 is arranged below the air bag module 4, the sole material can be polyurethane sole or other sole materials for shoes, the shape of the sole 5 is adjusted according to the shape of the air bag module 4, and the sole is arranged to accommodate the shape of the outer shell of different air bag modules 4 so as to ensure that a single air bag area can play a role.
In addition, a supporting module layer 4 can be additionally arranged below the air bag module 4 and above the outsole 5 so as to strengthen the whole supporting effect on the air bag module layer 3 and achieve better shock absorption and rebound effects.
The airbag module performance of the present utility model is illustrated by a number of specific examples.
The airbag module of the specifications shown in fig. 1 was used in the test of each of the examples and the comparative examples. The test content comprises: density, hardness, energy regression, peak acceleration; proper hardness indicates support, energy regression and peak acceleration represent rebound resilience and shock absorption respectively; energy regression and Peak acceleration were tested by ASTM1976, the larger the Energy regression Return value, the better the rebound resilience, the smaller the Peak acceleration Peak G represents the shock absorption.
Example 1
The adopted composite co-extrusion film comprises 5 layers of co-extrusion films, wherein the arrangement sequence of materials of the layers of co-extrusion films from outside to inside is EVA/POE/EVOH/POE/EVA, the third layer contains a high gas barrier layer of EVOH, the thickness is 2 mu m, and the total thickness of the composite co-extrusion film is 50 mu m.
The material used for supercritical foaming is PEBA, and the density of the obtained foaming material is 0.07g/cm 3, the hardness is 32C, the energy regression is 79.8 percent, and PeakG 8.93.93.
Placing the obtained PEBA foaming material into two composite co-extrusion films, hot-pressing and plastic-sucking forming the two composite co-extrusion films together, and sealing the edge by using a high-frequency or hot-pressing process; the obtained airbag module is tested, the internal air pressure is 0.5MPa, the density is 0.08g/cm 3, the hardness is 39C, the energy is regressed to 83.5 percent, and PeakG 7.08.08.
Example 2
The adopted composite co-extrusion film comprises 7 layers of co-extrusion films, wherein the arrangement sequence of materials of the layers of co-extrusion films from outside to inside is EVA/PA/POE/EVOH/POE/PA/EVA, the fourth layer of high-gas barrier layer containing EVOH has the thickness of 4 mu m, and the total thickness of the composite co-extrusion film is 100 mu m.
The material used for supercritical foaming is PEBA, and the density of the obtained foaming material is 0.07g/cm 3, the hardness is 32C, the energy regression is 79.8 percent, and PeakG 8.93.93.
Placing the obtained PEBA foaming material into two composite co-extrusion films, hot-pressing and plastic-sucking forming the two composite co-extrusion films together, and sealing the edge by using a high-frequency or hot-pressing process; the obtained airbag module is tested, the internal air pressure is 0.6MPa, the density is 0.09g/cm 3, the hardness is 42C, and the energy is recovered to 85.7 percent, peakG 7.56.56.
Example 3
The adopted composite co-extrusion film comprises 9 layers of co-extrusion films, wherein the arrangement sequence of materials of all the layers of co-extrusion films from outside to inside is EVA/PE/PA/POE/EVOH/POE/PA/PE/EVA, the fifth layer contains a high gas barrier layer of EVOH, the thickness is 8 mu m, and the total thickness of the composite co-extrusion film is 150 mu m.
The material used for supercritical foaming is PEBA, and the density of the obtained foaming material is 0.07g/cm 3, the hardness is 32C, the energy is regressed to 79.8%, and PeakG 8.93.93.
Placing the obtained PEBA foaming material into two composite co-extrusion films, hot-pressing and plastic-sucking forming the two composite co-extrusion films together, and sealing the edge by using a high-frequency or hot-pressing process; the obtained airbag module is tested, the internal air pressure is 0.7MPa, the density is 0.11g/cm 3, the hardness is 45C, the energy is recovered to 85.2 percent, and the energy is recovered to PeakG 7.93.93.
Example 4
The adopted composite co-extrusion film comprises 11 layers of co-extrusion films, wherein the arrangement sequence of materials of the layers of co-extrusion films from outside to inside is EVA/PE/PP/PA/POE/EVOH/POE/PA/PP/PE/EVA, the sixth layer of high-gas barrier layer containing EVOH has the thickness of 20 mu m, and the total thickness of the composite co-extrusion film is 300 mu m.
The material used for supercritical foaming is PEBA, and the density of the obtained foaming material is 0.07g/cm 3, the hardness is 32C, the energy is regressed to 79.8%, and PeakG 8.93.93.
Placing the obtained PEBA foaming material into two composite co-extrusion films, hot-pressing and plastic-sucking forming the two composite co-extrusion films together, and sealing the edge by using a high-frequency or hot-pressing process; the obtained airbag module is tested, the internal air pressure is 0.8MPa, the density is 0.15g/cm 3, the hardness is 50C, and the energy is returned to 82.5 percent, peakG 8.12.12.
Example 5
The adopted composite co-extrusion film comprises 7 layers of co-extrusion films, wherein the arrangement sequence of materials of the layers of co-extrusion films from outside to inside is EVA/PA/POE/EVOH/POE/PA/EVA, the fourth layer of high-gas barrier layer containing EVOH has the thickness of 4 mu m, and the total thickness of the composite co-extrusion film is 100 mu m.
The material used for supercritical foaming is aliphatic TPU, and the density of the obtained foaming material is 0.09G/cm 3, the hardness is 37C, the energy is returned to 78.7%, and the Peak G is 8.85.
Placing the obtained TPU foaming material into two composite co-extrusion films, hot-pressing and plastic-sucking forming the two composite co-extrusion films together, and sealing the edge by using a high-frequency or hot-pressing process; the obtained airbag module is tested, the internal air pressure is 0.6MPa, the density is 0.11G/cm 3, the hardness is 42C, the energy is returned to 83.8%, and the Peak G is 8.33.
Example 6
The adopted composite co-extrusion film comprises 7 layers of co-extrusion films, wherein the arrangement sequence of materials of the layers of co-extrusion films from outside to inside is EVA/PA/POE/EVOH/POE/PA/EVA, the fourth layer of high-gas barrier layer containing EVOH has the thickness of 8 mu m, and the total thickness of the composite co-extrusion film is 150 mu m.
The material used for supercritical foaming is aliphatic TPU, and the density of the obtained foaming material is 0.09G/cm 3, the hardness is 37C, the energy is returned to 78.7%, and the Peak G is 8.85.
Placing the obtained TPU foaming material into two composite co-extrusion films, hot-pressing and plastic-sucking forming the two composite co-extrusion films together, and sealing the edge by using a high-frequency or hot-pressing process; the obtained airbag module is tested, the internal air pressure is 0.7MPa, the density is 0.11G/cm 3, the hardness is 42C, the energy is returned to 82.1%, and the Peak G is 8.42.
Example 7
The adopted composite co-extrusion film comprises 7 layers of co-extrusion films, wherein the arrangement sequence of materials of the layers of co-extrusion films from outside to inside is EVA/PA/POE/EVOH/POE/PA/EVA, the fourth layer of high-gas barrier layer containing EVOH has the thickness of 4 mu m, and the total thickness of the composite co-extrusion film is 100 mu m.
The material used for supercritical foaming is TPEE, and the obtained foaming material has the density of 0.12G/cm 3, the hardness of 35C, the energy regression of 73.4 percent and Peak G9.67.
Placing the obtained TPU foaming material into two composite co-extrusion films, hot-pressing and plastic-sucking forming the two composite co-extrusion films together, and sealing the edge by using a high-frequency or hot-pressing process; the air bag module is tested, and the coated functional module has internal air pressure of 0.6MPa, density of 0.15G/cm 3, hardness of 40C, energy regression of 79.5% and Peak G of 8.96.
Example 8
The adopted composite co-extrusion film comprises 7 layers of co-extrusion films, wherein the arrangement sequence of materials of the layers of co-extrusion films from outside to inside is EVA/PA/POE/EVOH/POE/PA/EVA, the fourth layer of high-gas barrier layer containing EVOH has the thickness of 4 mu m, and the total thickness of the composite co-extrusion film is 100 mu m.
The material used for supercritical foaming is EVA/PEBA/SEBS/POE blending, the density of the obtained foaming material is 0.13G/cm 3, the hardness is 36C, the energy is regressed to 70.2%, and the Peak G is 10.41.
Placing the obtained EVA/PEBA/SEBS/POE blending foaming material into two composite co-extrusion films, hot-pressing and plastic-sucking forming the two composite co-extrusion films together, and sealing the edge by using a high frequency or hot-pressing process; the obtained airbag module was tested, the internal air pressure was 0.6MPa, the density was 0.15G/cm 3, the hardness was 42C, the energy was 76.3% by weight, and the Peak G9.79.
Comparative example 1
The adopted composite co-extrusion film comprises 7 layers of co-extrusion films, wherein the arrangement sequence of materials of the layers of co-extrusion films from outside to inside is EVA/PA/POE/EVOH/POE/PA/EVA, the fourth layer of high-gas barrier layer containing EVOH has the thickness of 4 mu m, and the total thickness of the composite co-extrusion film is 100 mu m.
The above-mentioned co-extruded films were prepared into an air bag having the shape shown in fig. 1 by a die, and the gas filled therein was air or nitrogen. The resulting balloon was tested by ASTM1976 at a maximum pressure of 0.1MPa and the impact test results were as follows: hardness 20-25C, energy Return 65.35%.
Comparative example 2
The material for supercritical foaming is PEBA, the density of the obtained foaming material is 0.07g/cm 3, the hardness is 32C, the energy is regressed to 79.8%, and PeakG 8.93.93.
Comparative example 3
The material for supercritical foaming is aliphatic TPU, the density of the obtained foaming material is 0.09G/cm 3, the hardness is 37C, the energy is returned to 78.7%, and the Peak G is 8.85;
Comparative example 4
The material for supercritical foaming is TPEE, the density of the obtained foaming material is 0.12G/cm 3, the hardness is 35C, the energy is regressed by 73.4%, and the Peak G is 9.67.
Comparative example 5
The material for supercritical foaming is EVA/PEBA/SEBS/POE blend, the density of the obtained foaming material is 0.13G/cm 3, the hardness is 36C, the energy is regressed to 70.2%, and the Peak G is 10.41.
The above embodiments can show that, compared with the air cushion filled with air only, the air bag module of the utility model has higher overall hardness and energy regression value, which indicates better supporting property and rebound resilience performance; after the composite co-extruded film is compounded with the supercritical foaming material, compared with the original supercritical foaming material, the density and the hardness are increased to a certain extent and are all in the required range, but the important energy regression numerical value is improved, the Peak G numerical value is reduced, and the rebound performance and the shock absorption performance are further improved.
It can also be seen from examples 1-4 that the more pronounced the increase in airbag module hardness as the composite coextruded film thickness increases, the greater the energy regression value tends to increase and decrease, with the greatest increase in energy regression and less increase in density at a total composite coextruded film thickness of 100 um.
Example 9
A shoe using the air bag parameter set of example 2, wherein the sole including the air bag module 31 portion had a measured energy return of 85.1% and an air bag pressure of 0.7Mpa; the sole containing the portion of the bladder module 32 measured a Peak G of 8.51 and a bladder pressure of 0.6MPa.
The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the utility model, may be made by those skilled in the art without departing from the scope of the utility model.
Claims (10)
1. The light high-elastic air bag module is characterized by comprising an outer layer and an inner layer, wherein the outer layer is a composite co-extrusion film, a closed inner cavity is defined by the composite co-extrusion film, the inner layer is made of a supercritical foaming material, and the inner cavity is filled with the supercritical foaming material; the composite coextruded film includes an ethylene vinyl alcohol copolymer layer.
2. The lightweight high-elastic airbag module of claim 1, wherein: the composite co-extrusion film comprises 5-11 layers of co-extrusion films, and an ethylene-vinyl alcohol copolymer layer is arranged in the middle of the composite co-extrusion film.
3. The lightweight high-elastic airbag module of claim 2, wherein: the coextruded film further includes at least one of a polyolefin resin layer and a polyamide layer.
4. A lightweight high-elastic airbag module as claimed in any one of claims 1 to 3, characterized in that: the total thickness of the composite co-extrusion film is 50-300 mu m, wherein the thickness of the ethylene vinyl alcohol copolymer layer is 2-20 mu m, the tensile strength of the composite co-extrusion film is more than or equal to 15MPa, the elongation at break is more than or equal to 500%, the haze is less than or equal to 25, the friction coefficient is less than or equal to 0.5, the wetting tension is more than or equal to 38, the heat sealing temperature is 120-150 ℃, the heat sealing strength is more than or equal to 15MPa, the oxygen transmission rate is less than or equal to 3.0cc/m 2.24 h.atm, and the water vapor transmission rate is less than or equal to 5.0g/m 2 h.
5. A shoe has a sole; the method is characterized in that: a sole comprising an airbag module as claimed in any one of claims 1 to 4.
6. The shoe of claim 5, wherein: the sole comprises an airbag module layer, wherein the airbag module layer comprises a half sole airbag area and is used for accommodating an airbag module; the airbag module in the half sole airbag area protrudes out of rebound energy, and the airbag module in the rear sole airbag area protrudes out of shock absorption performance.
7. The shoe of claim 6, wherein the half sole bladder area is divided into a medial side and a lateral side, and both inner and outer sides of the half sole bladder area and the half sole bladder area accommodate bladder modules; the functional parameters of the airbag modules of different parts are different according to different movement requirements.
8. The shoe according to claim 7, wherein a supporting module layer is provided above the air bag module layer, the supporting module layer being made of a hard material, and the supporting module layer being provided with holes of a corresponding size for being embedded outside different sections of the air bag module according to the shape of the air bag module layer, thereby supporting the air bag module layer.
9. A shoe according to any one of claims 6 to 8 wherein a sole is provided beneath the layer of air-bag modules, the sole being shaped to accommodate the outer shells of different air-bag modules in accordance with the shape of the layer of air-bag modules to ensure that the individual air-bag regions function independently.
10. The shoe of claim 9 wherein a support module layer is further provided below the bladder module layer and above the outsole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322313312.5U CN220800217U (en) | 2023-08-28 | 2023-08-28 | Light high-elastic air bag module and shoes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322313312.5U CN220800217U (en) | 2023-08-28 | 2023-08-28 | Light high-elastic air bag module and shoes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220800217U true CN220800217U (en) | 2024-04-19 |
Family
ID=90673186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322313312.5U Active CN220800217U (en) | 2023-08-28 | 2023-08-28 | Light high-elastic air bag module and shoes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220800217U (en) |
-
2023
- 2023-08-28 CN CN202322313312.5U patent/CN220800217U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102631113B1 (en) | Airbag for article of footwear | |
| JP3824335B2 (en) | Cushioning device having an improved flexible barrier membrane | |
| BE1004230A5 (en) | LOAD CARRYING shock absorbing device with improved gas-tight material FOR CONTROLLING THE DIFFUSION PUMPS. | |
| US4936029A (en) | Load carrying cushioning device with improved barrier material for control of diffusion pumping | |
| KR100836230B1 (en) | Process for Improving Interfacial Adhesion in a Laminate | |
| US4999931A (en) | Shock absorbing system for footwear application | |
| US4670995A (en) | Air cushion shoe sole | |
| WO2020018475A1 (en) | Airbag for article of footwear | |
| CN113645868A (en) | Sole structure for an article of footwear | |
| CN1140569A (en) | Multi-celled cushion and method of its manufacture | |
| TW201012405A (en) | Article of footwear | |
| AU2002245852A1 (en) | Process for improving interfacial adhesion in a laminate | |
| EP0699520B1 (en) | Gas inflated bladder for cushioning | |
| CN220800217U (en) | Light high-elastic air bag module and shoes | |
| KR20210034641A (en) | Outsole structure for articles of footwear | |
| CN117122126A (en) | Light high-elastic air bag module, manufacturing method thereof and shoe | |
| US20240130471A1 (en) | Article of footwear including a sole structure | |
| US20220267555A1 (en) | Foamed articles and methods of making the same | |
| KR20110075570A (en) | Process manufacture of insole |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |