WO2024015785A1 - Dispersion strengthened shoe material - Google Patents
Dispersion strengthened shoe material Download PDFInfo
- Publication number
- WO2024015785A1 WO2024015785A1 PCT/US2023/069956 US2023069956W WO2024015785A1 WO 2024015785 A1 WO2024015785 A1 WO 2024015785A1 US 2023069956 W US2023069956 W US 2023069956W WO 2024015785 A1 WO2024015785 A1 WO 2024015785A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- dispersion strengthened
- rubber
- thermoplastic
- strengthened material
- materials
- Prior art date
Links
- 239000000463 material Substances 0.000 title claims abstract description 107
- 239000006185 dispersion Substances 0.000 title claims abstract description 49
- 229920001971 elastomer Polymers 0.000 claims abstract description 36
- 239000005060 rubber Substances 0.000 claims abstract description 34
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 229920002943 EPDM rubber Polymers 0.000 claims description 33
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 31
- 239000000203 mixture Substances 0.000 claims description 19
- 239000002245 particle Substances 0.000 claims description 12
- 239000012815 thermoplastic material Substances 0.000 claims description 11
- 239000004014 plasticizer Substances 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 4
- 239000004604 Blowing Agent Substances 0.000 claims description 3
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical group C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 claims description 2
- 239000004156 Azodicarbonamide Substances 0.000 claims description 2
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical group NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 claims description 2
- 235000019399 azodicarbonamide Nutrition 0.000 claims description 2
- 238000011065 in-situ storage Methods 0.000 claims description 2
- 229920006124 polyolefin elastomer Polymers 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 229920001169 thermoplastic Polymers 0.000 abstract description 12
- 239000004416 thermosoftening plastic Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 30
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 27
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 9
- -1 polyethylene Polymers 0.000 description 6
- 239000008240 homogeneous mixture Substances 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000004073 vulcanization Methods 0.000 description 5
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 4
- 239000005977 Ethylene Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 150000001993 dienes Chemical class 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 150000002978 peroxides Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OJOWICOBYCXEKR-KRXBUXKQSA-N (5e)-5-ethylidenebicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(=C/C)/CC1C=C2 OJOWICOBYCXEKR-KRXBUXKQSA-N 0.000 description 2
- HECLRDQVFMWTQS-RGOKHQFPSA-N 1755-01-7 Chemical compound C1[C@H]2[C@@H]3CC=C[C@@H]3[C@@H]1C=C2 HECLRDQVFMWTQS-RGOKHQFPSA-N 0.000 description 2
- INYHZQLKOKTDAI-UHFFFAOYSA-N 5-ethenylbicyclo[2.2.1]hept-2-ene Chemical compound C1C2C(C=C)CC1C=C2 INYHZQLKOKTDAI-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 210000002683 foot Anatomy 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229920003048 styrene butadiene rubber Polymers 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229920012485 Plasticized Polyvinyl chloride Polymers 0.000 description 1
- 235000021355 Stearic acid Nutrition 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 210000003423 ankle Anatomy 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 239000010690 paraffinic oil Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000010059 sulfur vulcanization Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
- B29B7/90—Fillers or reinforcements, e.g. fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/22—Component parts, details or accessories; Auxiliary operations
- B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
- B29B7/286—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring properties of the mixture, e.g. temperature, density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/72—Measuring, controlling or regulating
- B29B7/726—Measuring properties of mixture, e.g. temperature or density
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
- B29B7/7476—Systems, i.e. flow charts or diagrams; Plants
- B29B7/7495—Systems, i.e. flow charts or diagrams; Plants for mixing rubber
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
- B29B7/06—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
- B29B7/10—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
- B29B7/18—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft
- B29B7/183—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with more than one shaft having a casing closely surrounding the rotors, e.g. of Banbury type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/22—Mixtures comprising a continuous polymer matrix in which are dispersed crosslinked particles of another polymer
Definitions
- the present invention generally relates to materials used for the construction of shoes and, more specifically, to a dispersion strengthened material for shoe outsoles, midsoles and insoles .
- Footwear articles are most often made from polymer compositions containing elastomers .
- Some popular polymers include rubber, hydrogenated nitrile butadiene rubber, nitrile butadiene rubber, ethylene propylene diene monomer rubber, styrene-butadiene rubber .
- Uses of such materials are typically limited by the structural and/or performance limitations of the polymer compositions . Structural and/or performance limitations are typically addressed by increasing the quantity of the material or by expanding the material to create a foam.
- Rubber has been commonly used in the world, ranging from the simplest industries, such as households, to many other important industrial products, including shoes .
- Rubber has its own history, dating back to about 1600 B . C .
- Natural rubber is often vulcanized, a process by which the rubber is heated and sulfur, peroxide or bisphenol are added to improve resilience and elasticity, and to prevent it from perishing .
- Vulcanization greatly improves the durability and utility of rubber .
- the successful development of vulcanization is most closely associated with Charles Goodyear .
- Carbon black is often used as an additive to rubber to improve its strength, especially in vehicle tires .
- EPDM rubber ethylene propylene diene monomer rubber
- EPDM is an M-Class rubber under ASTM standard D-1418 ; the M class comprises elastomers having a saturated chain of the polyethylene type (the M deriving from the more correct term polymethylene) .
- EPDM is made from ethylene, propylene, and a diene comonomer that enables cross-linking via sulfur vulcanization .
- the earlier relative of EPDM is EPR, ethylene propylene rubber
- EPDM ethylidene norbornene
- DCPD dicyclopentadiene
- VNB vinyl norbornene
- EPDM is derived from polyethylene into which 45-85 wt% of propylene has been copolymerized to reduce the formation of the typical polyethylene crystallinity.
- EPDM is a semi- crystalline material with ethylene-type crystal structures at higher ethylene contents, becoming essentially amorphous at ethylene contents that approach 50 wt% .
- Rubbers with saturated polymer backbones, such as EPDM have much better resistance to heat, light, and ozone than unsaturated rubbers such as natural rubber, SBR, or neoprene
- EPDM polychloroprene
- EPDM has good low- temperature properties, with elastic properties to temperatures as low as -40 C depending on the grade and the formulation.
- EPDM is typically compounded with fillers such as carbon black and calcium carbonate, with plasticizers such as paraffinic oils, and has useful rubbery properties only when cross-linked. Cross- linking mostly takes place via vulcanization with sulfur, but is also accomplished with peroxides (for better heat resistance) or with phenolic resins .
- EVA Ethylene- vinyl acetate
- PEVA ethylene-vinyl acetate
- VA vinyl acetate
- the EVA copolymer which is based on a low proportion of VA (approximately up to 4% ) may be referred to as vinyl acetate modified polyethylene . It is a copolymer and is processed as a thermoplastics material, just like low density polyethylene . It has some of the properties of a low density polyethylene, but increased gloss (useful for film) , softness and flexibility.
- the EVA copolymer which is based on a medium proportion of VA (approximately 4% to 30% ) , is referred to as thermoplastic ethylene-vinyl acetate copolymer and is a thermoplastic elastomer material . It is not vulcanized, but has some of the properties of a rubber or of plasticized polyvinyl chloride, particularly at the higher end of the range . Both filled and unfilled EVA materials have good low temperature properties and are tough . The materials with approximately 11% VA are used as hot melt adhesives .
- the EVA copolymer which is based on a high proportion of VA (greater than 60% ) , is referred to as ethylene-vinyl acetate rubber .
- EVA is an elastomeric polymer that produces materials which are " rubber- like" in softness and flexibility. The material has good clarity and gloss, low- temperature toughness, stress-crack resistance, waterproof properties, and resistance to UV radiation .
- EVA materials are currently used for some types of shoes and sandals that have low performance expectations ; an example is and some flip flops . While these shoes are soft in feel, they wear quickly and are not suitable for applications where the user expects the shoe to perform under high loads .
- shoe materials relates to the necessity for shoes to have excellent cushioning properties .
- foamed materials such as EVA are used for shoe sole members to satisfy these requirements .
- a material having low stiffness (being soft) and high cushioning properties is usually deformed greatly when subj ected to a load. Therefore, shoes that include a foam product of a high expansion ratio may be excessively deformed when subj ected to a high load. In this case, there are problems that the deformation greatly impairs agility and increases the risk of injury to the wearer; especially sports shoes, such as basketball shoes and running shoes, of which the shoe soles are liable to be subj ected to a high load, and are required to include a shoe sole member having a relatively small amount of strain
- the invention involves a material useful for the production of shoes and shoe components .
- the material is constructed as a dispersion strengthened material including at least two materials that are typically considered to be non- compatible with respect to each other, e . g . a thermoplastic and a rubber .
- the non-compat ible materials are combined in a manner that disperses one of the materials, preferably the rubber, throughout a matrix of the thermoplastic .
- the properties of both materials, the softness of the thermoplastic and the toughness and durability of the rubber are utilized to provide the properties of the resulting dispersion strengthened material . Accordingly, it is an objective of the present invention to provide a dispersion strengthened material for shoes .
- Fig . 1 illustrates a representative formulation for mixing one embodiment of the present dispersion strengthened material
- Fig . 2 is a perspective view of a shoe outsole constructed from the present dispersion strengthened material ;
- Fig . 3 is a section taken along lines 3-3 of Fig . 2 illustrating the rubber material dispersed throughout the thermoplastic material ; and Fig . 4 is a test report of a sample of the dispersion strengthened material .
- the dispersion strengthened material 100 includes a thermoplastic material (EVA) 104 and a rubber
- EPDM EPDM
- wwiitthh each combined iinnttoo aa material having properties suitable for use in the construction of shoes .
- the major challenge to blending EPDM 106 and EVA 104 is the incompatibility between the materials .
- the present invention provides a homogenous mixture wherein the
- EPDM is distributed throughout the EVA matrix to define a dispersion strengthened material 100.
- the EVA thermoplastic 104 provides a lightweight material that may be foamed or polmersor expanded plastic tthhaatt iiss highly compressive and thus absorbs shock, while the EPDM rubber material 106 provides high wear, surface adhesion, foot and ankle support and UV resistance .
- the dispersion strengthened material 100 once mixed, can be processed much like existing materials used for shoe construction .
- the materials may be mixed in a suitable mixing machine, such as a Brabender (not shown) operating at about
- the material may also be mixed in a screw type extruder and extruded as a shape or plate which can be further processed by cutting into strips or shapes for molding in a compression press which may include vulcanization of the EPDM while in situ within the EVA matrix .
- Internal mixers and the like may be utilized in place of the Brabender or the extruder without departing from the scope of the invention . It should be generally noted that particle size will affect the ability of the thermoplastic and the rubber to homogenize, and that smaller particle size will typically allow a more homogenous mixture .
- FIG. 1 an exemplary embodiment is illustrated including (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104 Ethylene Vinyl Acetate from (EVA) 104
- Thermoplastic Elastomer (TPE) 108 as about 11% of the mixture for a plasticizer, (POE) 110 Polyolefin Elastomer from the Dow Chemical Company, trade name Engage 8150, as about 13% of the mixture for a plasticizer, Talcum. Powder
- Azodicarbonamide as about 2% of the mixture for a blowing agent
- Dicumyl Peroxide as about .5% of the mixture for a vulcanizing agent and cross linker
- EVA 104 may range from about 5% of the mixture to about 95% of the mixture with the EPDM 106 making up the reciprocal percentage and the additive chemicals varied to correspond to the respective amount of the EVA and EPDM.
- EPDM 106 with respect to the EVA 104 will result in a harder dispersion strengthened material, while higher percentages of EVA will result in a softer dispersion strengthened material . Further, it should be noted that the term "about” as used herein refers to approximately or nearly, complying with industry norms for weight measurements .
- a sheet of test criteria completed for the present dispersion strengthened material is illustrated.
- the material exceeds current specifications for materials utilized for shoe outsoles, insoles and midsoles .
- Notable parameters were the fatigue bending test 124. While it remains unknown how many cycles the material will withstand, the material was tested to over 50, 000 cycles without a failure .
- the resilience 126 which far exceeded the minimum with a 44 ; showing the material is highly flexible and compressible with a compression test 128 of 56.33.
- the material exhibited low losses in the abrasion test 130 and exhibited high tensile strength 132, requiring 4 .95 Mpa (Megapascal ) to break the dispersion strengthened material 100.
- an outsole 140 constructed from the dispersion strengthened material is illustrated.
- Fig 3 illustrates the distributed EPDM particles 106 positioned throughout the EVA 104 substrate .
- the harder EPDM particles interact with the top surface 142 of the outsole 140, as well as the ground engaging surface 144 along with the EVA 104 .
- the EPDM particles 106 are also distributed throughout the central portion 146 of the outsole 140, compression of the outsole 140 is also affected by making the dispersion strengthened material 100 harder than pure EVA and softer than pure EPDM.
- Those skilled in the art will recognize that varying the amounts of EVA and EPDM will allow the hardness, wear resistance and compression, as well as other parameters, to be modified to suit particular needs .
- the present invention has other uses besides shoes such, but not limited to, yoga mats, exercise mats, slip- resistant floor mats, baby changing mats, work station mats, protective padding e . g . automotive and sports, practice dummies for contact sports, internal insulation and waterproofing . It should also be noted that the present combination provides the ability to recycle materials that heretofore unable to be recycled because the incompatibility of the materials .
Abstract
The invention involves a system and method for constructing a material useful for the production of shoes and shoe components. The material is constructed as a dispersion strengthened material including at least two materials that are typically considered to be non- compatible with respect to each other, e. g. a thermoplastic and a rubber. The non-compatible materials are combined in a manner that disperses one of the materials, preferably the rubber, throughout a matrix of the thermoplastic. In this manner, the properties of both materials, the softness of the thermoplastic and the toughness and durability of the rubber, are utilized to provide the properties of the resulting dispersion strengthened material.
Description
DISPERSION STRENGTHENED SHOE MATERIAL
FIELD OF INVENTION
The present invention generally relates to materials used for the construction of shoes and, more specifically, to a dispersion strengthened material for shoe outsoles, midsoles and insoles .
BACKGROUND INFORMATION
Footwear articles are most often made from polymer compositions containing elastomers . Some popular polymers include rubber, hydrogenated nitrile butadiene rubber, nitrile butadiene rubber, ethylene propylene diene monomer rubber, styrene-butadiene rubber . Uses of such materials are typically limited by the structural and/or performance limitations of the polymer compositions . Structural and/or performance limitations are typically addressed by increasing the quantity of the material or by expanding the material to create a foam.
Rubber has been commonly used in the world, ranging from the simplest industries, such as households, to many other important industrial products, including shoes .
Rubber has its own history, dating back to about 1600 B . C .
Rubber has been collected for a long time in its native
Central and South America . Since then, rubber has become one of the most important materials used widely and daily in our lives .
Natural rubber is often vulcanized, a process by which the rubber is heated and sulfur, peroxide or bisphenol are added to improve resilience and elasticity, and to prevent it from perishing . Vulcanization greatly improves the
durability and utility of rubber . The successful development of vulcanization is most closely associated with Charles Goodyear . Carbon black is often used as an additive to rubber to improve its strength, especially in vehicle tires .
EPDM rubber (ethylene propylene diene monomer rubber) is a type of synthetic rubber that is used in many applications . EPDM is an M-Class rubber under ASTM standard D-1418 ; the M class comprises elastomers having a saturated chain of the polyethylene type (the M deriving from the more correct term polymethylene) . EPDM is made from ethylene, propylene, and a diene comonomer that enables cross-linking via sulfur vulcanization . The earlier relative of EPDM is EPR, ethylene propylene rubber
(useful for high-voltage electrical cables ) , that contains no diene units and can only be cross-linked using radical methods such as peroxides . Dienes used in the manufacture of EPDM rubbers are ethylidene norbornene (ENB) , dicyclopentadiene (DCPD) , and vinyl norbornene (VNB) . EPDM is derived from polyethylene into which 45-85 wt% of propylene has been copolymerized to reduce the formation of the typical polyethylene crystallinity. EPDM is a semi- crystalline material with ethylene-type crystal structures at higher ethylene contents, becoming essentially amorphous at ethylene contents that approach 50 wt% . Rubbers with saturated polymer backbones, such as EPDM, have much better resistance to heat, light, and ozone than unsaturated rubbers such as natural rubber, SBR, or neoprene
(polychloroprene) . This makes it suitable to be utilized in external harsh environments . As such, EPDM can be formulated to be resistant to temperatures as high as
150 °C, and, properly formulated, can be used outdoors for
many years or decades without degradation. EPDM has good low- temperature properties, with elastic properties to temperatures as low as -40 C depending on the grade and the formulation.
As with most rubbers, EPDM is typically compounded with fillers such as carbon black and calcium carbonate, with plasticizers such as paraffinic oils, and has useful rubbery properties only when cross-linked. Cross- linking mostly takes place via vulcanization with sulfur, but is also accomplished with peroxides ( for better heat resistance) or with phenolic resins .
Ethylene- vinyl acetate (EVA) , also known as poly
( ethylene-vinyl acetate) (PEVA) , is the copolymer of ethylene and vinyl acetate . The weight percent of vinyl acetate usually varies from 10% to 40%, with the remainder being ethylene . There are three different types of EVA copolymer, which differ in the vinyl acetate (VA) content and the way the materials are used.
The EVA copolymer which is based on a low proportion of VA (approximately up to 4% ) may be referred to as vinyl acetate modified polyethylene . It is a copolymer and is processed as a thermoplastics material, just like low density polyethylene . It has some of the properties of a low density polyethylene, but increased gloss (useful for film) , softness and flexibility.
The EVA copolymer, which is based on a medium proportion of VA (approximately 4% to 30% ) , is referred to as thermoplastic ethylene-vinyl acetate copolymer and is a thermoplastic elastomer material . It is not vulcanized, but has some of the properties of a rubber or of plasticized polyvinyl chloride, particularly at the higher end of the range . Both filled and unfilled EVA materials
have good low temperature properties and are tough . The materials with approximately 11% VA are used as hot melt adhesives .
The EVA copolymer, which is based on a high proportion of VA (greater than 60% ) , is referred to as ethylene-vinyl acetate rubber . EVA is an elastomeric polymer that produces materials which are " rubber- like" in softness and flexibility. The material has good clarity and gloss, low- temperature toughness, stress-crack resistance, waterproof properties, and resistance to UV radiation . EVA materials are currently used for some types of shoes and sandals that have low performance expectations ; an example is and some flip flops . While these shoes are soft in feel, they wear quickly and are not suitable for applications where the user expects the shoe to perform under high loads .
One drawback of shoe materials relates to the necessity for shoes to have excellent cushioning properties . Generally, foamed materials such as EVA are used for shoe sole members to satisfy these requirements .
A material having low stiffness (being soft) and high cushioning properties is usually deformed greatly when subj ected to a load. Therefore, shoes that include a foam product of a high expansion ratio may be excessively deformed when subj ected to a high load. In this case, there are problems that the deformation greatly impairs agility and increases the risk of injury to the wearer; especially sports shoes, such as basketball shoes and running shoes, of which the shoe soles are liable to be subj ected to a high load, and are required to include a shoe sole member having a relatively small amount of strain
( amount of deformation) when subj ected to a high load.
When the expansion ratio of the foam product in the shoe
sole member is made low, the amount of strain to the shoe sole member becomes relatively small; however, the cushioning properties of the shoe sole member are also lowered in normal use, causing a hard wearing feeling when the foot fits into the shoe .
Thus, what is needed in the art of shoes is a combination of materials that are considered to be non- compatible chemically, but if combined, could produce a combination of properties that would be beneficial to the production of household goods, such as shoes, to provide the desired cushioning from soft materials and wear properties from harder materials . The material should be practical to manufacture with known manufacturing machinery and should be amenable to the manufacturing processes used for the production of shoes .
SUMMARY OF THE INVENTION
Briefly, the invention involves a material useful for the production of shoes and shoe components . The material is constructed as a dispersion strengthened material including at least two materials that are typically considered to be non- compatible with respect to each other, e . g . a thermoplastic and a rubber . The non-compat ible materials are combined in a manner that disperses one of the materials, preferably the rubber, throughout a matrix of the thermoplastic . In this manner, the properties of both materials, the softness of the thermoplastic and the toughness and durability of the rubber, are utilized to provide the properties of the resulting dispersion strengthened material .
Accordingly, it is an objective of the present invention to provide a dispersion strengthened material for shoes .
It is a further objective of the present invention to provide a dispersion strengthened material including a thermoplastic matrix having rubber particles dispersed throughout the EVA matrix .
It is yet a further objective of the present invention to provide a dispersion strengthened material including about 50% EVA thermoplastic and about 10% EPDM rubber, the remainder being made up of , vulcani zing agent and filler .
Other objectives and advantages of this invention will become apparent from the following description taken in conjunction with the accompanying drawings wherein are set forth, by way of illustration and example , certain embodiments of this invention . The drawings constitute a part of this specification, include exemplary embodiments of the present invention, and illustrate various objects and features thereof .
BRIEF DESCRIPTION OF THE FIGURES
Fig . 1 illustrates a representative formulation for mixing one embodiment of the present dispersion strengthened material ;
Fig . 2 is a perspective view of a shoe outsole constructed from the present dispersion strengthened material ;
Fig . 3 is a section taken along lines 3-3 of Fig . 2 illustrating the rubber material dispersed throughout the thermoplastic material ; and
Fig . 4 is a test report of a sample of the dispersion strengthened material .
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
While the present invention is susceptible of embodiment in various forms, there is shown in the drawings and will hereinafter be described a presently preferred embodiment with the understanding that the present disclosure is to be considered an exemplification of the invention and is not intended to limit the invention to the specific embodiments illustrated.
Referring ggeenneerraallllyy ttoo Figs . 1-3, a dispersion strengthened material 100 and method for making the dispersion strengthened material 102 are illustrated and described. The dispersion strengthened material 100 includes a thermoplastic material (EVA) 104 and a rubber
(EPDM) 106, which are generally considered to be incompatible, wwiitthh each combined iinnttoo aa material having properties suitable for use in the construction of shoes .
The major challenge to blending EPDM 106 and EVA 104 is the incompatibility between the materials . Thus, the present invention provides a homogenous mixture wherein the
EPDM is distributed throughout the EVA matrix to define a dispersion strengthened material 100. When evenly distributed, the EVA thermoplastic 104 provides a lightweight material that may be foamed or polmersor expanded plastic tthhaatt iiss highly compressive and thus absorbs shock, while the EPDM rubber material 106 provides high wear, surface adhesion, foot and ankle support and UV resistance . The dispersion strengthened material 100, once mixed, can be processed much like existing materials used for shoe construction .
The materials may be mixed in a suitable mixing machine, such as a Brabender (not shown) operating at about
50 revolutions per minute for a suitable time period, which may be between two minutes and thirty minutes at temperatures up to 195 degrees Celsius . The material may also be mixed in a screw type extruder and extruded as a shape or plate which can be further processed by cutting into strips or shapes for molding in a compression press which may include vulcanization of the EPDM while in situ within the EVA matrix . Internal mixers and the like may be utilized in place of the Brabender or the extruder without departing from the scope of the invention . It should be generally noted that particle size will affect the ability of the thermoplastic and the rubber to homogenize, and that smaller particle size will typically allow a more homogenous mixture . Should smaller particles not be available, mixing up to and at an elevated temperature will aid in providing a homogenous mixture . It should be noted that while a homogenous mixture is desired, there may be applications for the present dispersion strengthened material where a non-homogenous mixture would be beneficial, particularly if the EPDM 106 can be concentrated in areas of high wear or high compression .
Referring to Fig. 1 , an exemplary embodiment is illustrated including (EVA) 104 Ethylene Vinyl Acetate from
BASF-YPC Company Limited, material grade 6110M in a quantity of 53% of the mixture is mixed with (EPDM) 106
Ethylene Propylene Diene Monomer from Dow Chemical Company, trade name Nordel IP3745P, as about 11% of the mixture,
Thermoplastic Elastomer (TPE) 108 as about 11% of the mixture for a plasticizer, (POE) 110 Polyolefin Elastomer from the Dow Chemical Company, trade name Engage 8150, as
about 13% of the mixture for a plasticizer, Talcum. Powder
112 as about 6% of the mixture for a filler, (AC) 114
Azodicarbonamide as about 2% of the mixture for a blowing agent, (DCP) 116 Dicumyl Peroxide as about .5% of the mixture for a vulcanizing agent and cross linker, ( ZnO) 118
Zinc Oxide as about . 85% of the mixture as an activator to boost vulcanization, and (ST) 120 Stearic Acid as about .5% of the mixture for a lubricant . It should be noted that this is currently the preferred embodiment . It should also be noted that other combinations of EVA 104 and EPDM 106 may be utilized without departing from the scope of the invention . EVA 104 may range from about 5% of the mixture to about 95% of the mixture with the EPDM 106 making up the reciprocal percentage and the additive chemicals varied to correspond to the respective amount of the EVA and EPDM.
It should also be noted that increasing the percentage of
EPDM 106 with respect to the EVA 104 will result in a harder dispersion strengthened material, while higher percentages of EVA will result in a softer dispersion strengthened material . Further, it should be noted that the term "about" as used herein refers to approximately or nearly, complying with industry norms for weight measurements .
Referring to Fig . 4 , a sheet of test criteria completed for the present dispersion strengthened material is illustrated. In the test criteria it can be seen that the material exceeds current specifications for materials utilized for shoe outsoles, insoles and midsoles . Notable parameters were the fatigue bending test 124. While it remains unknown how many cycles the material will withstand, the material was tested to over 50, 000 cycles without a failure . Also notable is the resilience 126
which far exceeded the minimum with a 44 ; showing the material is highly flexible and compressible with a compression test 128 of 56.33. Still, the material exhibited low losses in the abrasion test 130 and exhibited high tensile strength 132, requiring 4 .95 Mpa (Megapascal ) to break the dispersion strengthened material 100.
Referring to Figs . 2 and 3, an outsole 140 constructed from the dispersion strengthened material is illustrated.
Fig 3 illustrates the distributed EPDM particles 106 positioned throughout the EVA 104 substrate . As shown, the harder EPDM particles interact with the top surface 142 of the outsole 140, as well as the ground engaging surface 144 along with the EVA 104 . Because the EPDM particles 106 are also distributed throughout the central portion 146 of the outsole 140, compression of the outsole 140 is also affected by making the dispersion strengthened material 100 harder than pure EVA and softer than pure EPDM. Those skilled in the art will recognize that varying the amounts of EVA and EPDM will allow the hardness, wear resistance and compression, as well as other parameters, to be modified to suit particular needs . It should also be noted that the present invention has other uses besides shoes such, but not limited to, yoga mats, exercise mats, slip- resistant floor mats, baby changing mats, work station mats, protective padding e . g . automotive and sports, practice dummies for contact sports, internal insulation and waterproofing . It should also be noted that the present combination provides the ability to recycle materials that heretofore unable to be recycled because the incompatibility of the materials .
It is to be understood that while a certain form of the invention is illustrated, it is not to be limited to
the specific form or arrangement herein described and shown . It will be apparent to those skilled in the art that various changes may be made without departing from the scope of the invention, and the invention is not to be considered limited to what is shown and described in the specification and any drawings/ figures included herein.
One skilled in the art will readily appreciate that the present invention is well adapted to carry out the obj ectives and obtain the ends and advantages mentioned, as well as those inherent therein. The embodiments, methods, procedures and techniques described herein are presently representative of the preferred embodiments, are intended to be exemplary, and are not intended as limitations on the scope . Changes therein and other uses will occur to those skilled in the art which are encompassed within the spirit of the invention and are defined by the scope of the appended claims . Although the invention has been described in connection with specific preferred embodiments, it should be understood that the invention as claimed should not be unduly limited to such specific embodiments .
Indeed, various modifications of the described modes for carrying out the invention, which are obvious to those skilled in the art, are intended to be within the scope of the following claims .
Claims
1. A dispersion strengthened material ( 100) comprising: a thermoplastic material ( 104) in a solid form; a rubber material (106) in the form of particles distributed throughout the thermoplastic material (104 ) so that the rubber material (106) particles are distributed throughout the matrix in a spaced apart arrangement supported by the thermoplastic material ( 104) .
2. The dispersion strengthened material ( 100) as claimed in claim 1 wherein at least a portion of the rubber material (106) particles are positioned on an outer surface of the thermoplastic material .
3. The dispersion strengthened material ( 100) as claimed in claim 1 wherein the rubber material (106) is vulcanized in situ after being distributed throughout the thermoplastic material ( 104) .
4. The dispersion strengthened material (100) as claimed in claim 1 wherein the thermoplastic material (104) is Ethylene Vinyl Acetate (EVA) .
5. The dispersion strengthened material (100) as claimed in claim 1 wherein the rubber material (106) is
Ethylene Propylene Diene Monomer (EPDM) .
6. The dispersion strengthened material (100) as claimed in claim 3 wherein the rubber material is vulcanized in a compression press.
7. The dispersion strengthened material (100) as claimed in claim 3 wherein the thermoplastic material is foamed.
8. The dispersion strengthened material (100) as claimed in claim 1 wherein the dispersion strengthened material (100) is used in the construction of a shoe.
9. The dispersion strengthened material (100) as claimed in claim 8 wherein the rubber material (106) is concentrated in areas of high wear with respect to the shoe .
10. The dispersion strengthened material ( 100) as claimed in claim 1 wherein the rubber material (106) particles are homogenous in size with respect to each other.
11. The dispersion strengthened material ( 100) as claimed in claim 1 wherein the rubber material (106) particles vary in size with respect to each other .
12. The dispersion strengthened material ( 100) as claimed in claim 1 wherein the thermoplastic material (104 ) comprises fifty percent or more of the dispersion strengthened material ( 100) .
13. The dispersion strengthened material ( 100) as claimed in claim 1 wherein the rubber material (106) comprises about ten percent or more of the dispersion strengthened material ( 100) .
14. The dispersion strengthened material ( 100) as claimed in claim 1 including a plasticizer .
15. The dispersion strengthened material (100) as claimed in claim 14 wherein the plasticizer (108) is a thermoplastic elastomer.
16. The dispersion strengthened material (100) as claimed in claim 14 wherein the plasticizer (108) is a polyolefin elastomer.
17. The dispersion strengthened material (100) as claimed in claim 1 including a blowing agent.
18. The dispersion strengthened material (100) as claimed in claim 17 wherein the blowing agent is
Azodicarbonamide (114) as about 2% of the mixture.
19. The dispersion strengthened material (100) as claimed in claim 1 including a vulcanizing agent.
20. The dispersion strengthened material (100) as claimed in claim 19 wherein the vulcanizing agent is dicumyl peroxide as about .5% of the mixture.
21. The dispersion strengthened material (100) as claimed in claim 1 wherein the thermoplastic material (104) may range from about 5% of the mixture to about 95% of the mixture with the rubber material (106) making up the reciprocal percentage.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US202263368479P | 2022-07-14 | 2022-07-14 | |
US63/368,479 | 2022-07-14 | ||
US202318333771A | 2023-06-13 | 2023-06-13 | |
US18/333,771 | 2023-06-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2024015785A1 true WO2024015785A1 (en) | 2024-01-18 |
Family
ID=89537426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2023/069956 WO2024015785A1 (en) | 2022-07-14 | 2023-07-11 | Dispersion strengthened shoe material |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2024015785A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080275187A1 (en) * | 2005-10-27 | 2008-11-06 | Exxonmobil Chemical Patents Inc. | Low Permeability Thermoplastic Elastomer Composition |
US20100331452A1 (en) * | 2007-10-11 | 2010-12-30 | Exxonmobil Chemical Patents Inc. | Efficient mixing process for producing thermoplastic elastomer composition |
CN104448521B (en) * | 2014-11-18 | 2016-09-28 | 安踏(中国)有限公司 | A kind of EVA composite foam material and preparation method thereof |
US20200281314A1 (en) * | 2018-09-07 | 2020-09-10 | Skechers U.S.A., Inc. Ii | Foamed sole components and method for making a sole with foamed sole components |
US20210371633A1 (en) * | 2020-05-29 | 2021-12-02 | Exxonmobil Chemical Patents Inc. | Sequential, Double Elastomer Vulcanization System, Method and Composition |
US20230272214A1 (en) * | 2022-02-25 | 2023-08-31 | Industrial Technology Research Institute | Thermoplastic vulcanizate and method for preparing the same |
-
2023
- 2023-07-11 WO PCT/US2023/069956 patent/WO2024015785A1/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080275187A1 (en) * | 2005-10-27 | 2008-11-06 | Exxonmobil Chemical Patents Inc. | Low Permeability Thermoplastic Elastomer Composition |
US20100331452A1 (en) * | 2007-10-11 | 2010-12-30 | Exxonmobil Chemical Patents Inc. | Efficient mixing process for producing thermoplastic elastomer composition |
CN104448521B (en) * | 2014-11-18 | 2016-09-28 | 安踏(中国)有限公司 | A kind of EVA composite foam material and preparation method thereof |
US20200281314A1 (en) * | 2018-09-07 | 2020-09-10 | Skechers U.S.A., Inc. Ii | Foamed sole components and method for making a sole with foamed sole components |
US20210371633A1 (en) * | 2020-05-29 | 2021-12-02 | Exxonmobil Chemical Patents Inc. | Sequential, Double Elastomer Vulcanization System, Method and Composition |
US20230272214A1 (en) * | 2022-02-25 | 2023-08-31 | Industrial Technology Research Institute | Thermoplastic vulcanizate and method for preparing the same |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN109438821B (en) | High-thermal-conductivity graphene modified EVA (ethylene-vinyl acetate) foam material and preparation method thereof | |
US5906872A (en) | Chemical bonding of rubber to plastic in articles of footwear | |
CN107245183B (en) | Composition for preparing composite foaming material for sports shoe sole and preparation method | |
Simpson | Rubber basics | |
EP3248495B1 (en) | Outer sole and shoes | |
WO2008083451A1 (en) | Polymer composition, microporous rubber-like foamed vulcanizate, and microporous rubber-like foamed shoe sole | |
JP6824936B2 (en) | Compositions, thermoplastic vulcanized products produced from compositions and products produced from compositions | |
CN112029186B (en) | Composite response foaming rubber-plastic sole, preparation method thereof and sports shoe | |
CN110982166A (en) | High-elasticity wear-resistant EVA (ethylene-vinyl acetate copolymer) foamed shoe material and preparation method thereof | |
CN101218291A (en) | Peroxide-cured thermoplastic vulcanizates | |
KR101203677B1 (en) | Ethylene vinyl acetate resin composition for MASAI SENSOR | |
CN110903629A (en) | High-elasticity wear-resistant polyurethane foamed shoe material and preparation method thereof | |
CN111100369B (en) | Foaming material for shoes, preparation method and shoes | |
CN111718587A (en) | Low-compression permanent deformation thermoplastic elastomer material and preparation method thereof | |
JP2957829B2 (en) | Method for producing composite material comprising vulcanized elastomer combined with thermoplastic elastomer containing polyamide block, composite material obtained by this method, and sports equipment using this material | |
WO2024015785A1 (en) | Dispersion strengthened shoe material | |
DK168577B1 (en) | Crosslinkable polymeric material, process for making such a crosslinkable material and cured material obtained by crosslinking the polymeric material | |
KR20090080962A (en) | Reactively-coupled articles and related methods | |
US3891725A (en) | Vulcanizable chlorinated elastomer composition | |
CN100502712C (en) | Anti-slip sole material | |
US20220087361A1 (en) | Rubber foam for shoe sole | |
KR0163984B1 (en) | Method of manufacturing thermoplastic elastomers | |
KR20120103196A (en) | The composition of rubber sheet and manufacturing method thereof | |
JPH11245339A (en) | Composite structure containing elastomer and thermoplastic polymer, and article containing it | |
CN211657504U (en) | Shoes with removable sole |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23840461 Country of ref document: EP Kind code of ref document: A1 |