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US20090320324A1 - Cushioning device - Google Patents

Cushioning device Download PDF

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Publication number
US20090320324A1
US20090320324A1 US12/163,280 US16328008A US2009320324A1 US 20090320324 A1 US20090320324 A1 US 20090320324A1 US 16328008 A US16328008 A US 16328008A US 2009320324 A1 US2009320324 A1 US 2009320324A1
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US
United States
Prior art keywords
cushioning device
gel
gel material
styrene
film material
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.)
Abandoned
Application number
US12/163,280
Other languages
English (en)
Inventor
Philip C. Yang
Charles E. Lundy, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer Consumer Care Holdings LLC
Original Assignee
Schering Plough Healthcare Products Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schering Plough Healthcare Products Inc filed Critical Schering Plough Healthcare Products Inc
Priority to US12/163,280 priority Critical patent/US20090320324A1/en
Assigned to SCHERING-PLOUGH HEALTHCARE PRODUCTS, INC. reassignment SCHERING-PLOUGH HEALTHCARE PRODUCTS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LUNDY, CHARLES E., JR., YANG, PHILIP C.
Priority to JP2011516695A priority patent/JP5244238B2/ja
Priority to BRPI0913961A priority patent/BRPI0913961A2/pt
Priority to ARP090102381A priority patent/AR072377A1/es
Priority to EP09771091A priority patent/EP2310467A2/en
Priority to AU2009262057A priority patent/AU2009262057A1/en
Priority to PCT/US2009/048756 priority patent/WO2009158560A2/en
Priority to CA2728540A priority patent/CA2728540A1/en
Priority to MX2010014523A priority patent/MX2010014523A/es
Publication of US20090320324A1 publication Critical patent/US20090320324A1/en
Priority to CO10162931A priority patent/CO6331356A2/es
Assigned to MSD CONSUMER CARE, INC. reassignment MSD CONSUMER CARE, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: SCHERING-PLOUGH HEALTHCARE PRODUCTS, INC.
Priority to US13/300,050 priority patent/US20120060304A1/en
Priority to JP2012181689A priority patent/JP2012224868A/ja
Priority to ARP130100387A priority patent/AR089933A2/es
Priority to ARP130100386A priority patent/AR089932A2/es
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/189—Resilient soles filled with a non-compressible fluid, e.g. gel, water
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/06—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings
    • A61F13/061—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings for knees
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/06—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings
    • A61F13/064—Bandages or dressings; Absorbent pads specially adapted for feet or legs; Corn-pads; Corn-rings for feet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/003—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor characterised by the choice of material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/02—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C39/10—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. casting around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/48—Wearing apparel
    • B29L2031/50—Footwear, e.g. shoes or parts thereof
    • B29L2031/507—Insoles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2437/00—Clothing
    • B32B2437/02—Gloves, shoes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2479/00—Furniture
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
    • C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
    • C09J2301/162—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer the carrier being a laminate constituted by plastic layers only
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2475/00—Presence of polyurethane
    • C09J2475/006—Presence of polyurethane in the substrate

Definitions

  • the subject invention is directed to cushioning devices comprising a pressure sensitive adhesive.
  • the invention concerns the use of pressure sensitive adhesive materials to improve the hold of soft gel cushioning devices.
  • One of the key attributes of the footwear cushions is to prevent the footwear from rubbing sensitive areas of skin, in particular in the heel area.
  • the cushion needs to stay in place firmly during movement associated with normal use of footwear.
  • Cushioning devices made of soft gels are known in the art and are desirable for their comfort, flexibility, durability and look.
  • the assignee of this invention Schering-Plough Healthcare Products, Inc., markets a cushioning device under the trade name Dr.
  • Scholl's® Gel Heel Liner which comprises a thermoplastic polyurethane (TPU) film bonded to a polyurethane (PU) gel, where the PU gel is produced in a way to have a sticky surface.
  • TPU thermoplastic polyurethane
  • PU polyurethane
  • the Heel Liner is packaged with a release film to preserve the tackiness of the PU gel sticky surface, which is then applied to the shoe to hold the liner in place.
  • the TPU film provides a nonstick surface opposite the sticky surface, which nonstick contacts the wearers foot, sock, or hosiery.
  • the subject invention provides a cushioning device comprising a layer of polyurethane gel material comprising top and bottom surfaces, at least one layer of thermoplastic polyurethane film material bonded to the one or both of said top and bottom surfaces thereof, and a layer of pressure sensitive adhesive bonded to one of said at least one thermoplastic polyurethane film material, wherein the pressure sensitive adhesive is located on a surface of the thermoplastic polyurethane film opposite to the surface contacting said bottom surface of said polyurethane gel material.
  • the subject invention also provides a gel cushioning device comprising a sticky surface, the device comprising a gel material bound to a thermoplastic film material having good compatibility with the gel material, wherein the thermoplastic film material further comprises a pressure sensitive adhesive located on a surface of the film material opposite to the surface that is bonded to the gel material.
  • the subject invention further provides gel cushioning device comprising a sticky surface, the device comprising a layer of gel material having an upper and lower surface and two layers of thermoplastic film material, each film material comprising upper and lower surfaces, wherein the upper surface of the gel material is bonded with the lower surface of one of said layers of film material and the lower surface of the gel material is bonded with the upper surface of the other of said layers of film material, wherein at least one of the layers of film material comprises a pressure sensitive adhesive on a surface opposite the surface bonded to the gel material thereby providing the sticky surface of the device.
  • the subject invention also provides a method of constructing a gel cushioning device comprising a sticky surface, which comprises loading gel material into a mold cavity comprising at least one layer of thermoplastic film material, said at least one layer of thermoplastic film material comprising upper and lower surfaces, and curing the gel material to form a solid gel, such that the cured gel material is bonded with the film material and wherein said at least one of the layer of thermoplastic film material comprises a pressure sensitive adhesive on a surface opposite the surface bonded to the gel material thereby providing the sticky surface of the device.
  • FIG. 1A depicts a cross section of a prior art cushioning element.
  • FIG. 1B depicts a cross section of an example embodiment of the cushioning element of the invention.
  • FIG. 2 depicts a cross section of a second example embodiment of the cushioning element of the invention.
  • the products of the invention comprise an advance over prior art TPU/PU molded cushioning elements in that they provide for a means to attach a pressure sensitive adhesive to a gel material to provide extra holding capabilities.
  • FIG. 1A shows a cross section of a prior art material comprising gel material ( 104 ) bonded to a film material ( 102 ). The film material provides an exterior surface that resists friction to allow for smooth contact with skin or articles of clothing.
  • FIG. 1B shows a cross section of an example embodiment of the subject invention wherein a layer of gel material having top and bottom surfaces comprises two layers of film material ( 102 , 103 ) bonded to each surface of the gel material.
  • the gel material may comprise, for example polyurethane gel, styrenic based gels, or silicone gels.
  • the gel materials useful in the invention may typically have a Shore 00 hardness of between about 10 and about 80, preferably between about 30 and about 60. In certain embodiments of the invention, the polyurethane gel materials are used and may have a Shore 00 hardness of about 50.
  • the gel material may typically have a thickness of between 0.3 and 3 mm.
  • the film material may comprise thermoplastic polymeric film material that is compatible with the gel material used in the cushion. For example, where a polyurethane gel material is used in the cushion, the film material will likely comprise a thermoplastic polyurethane film material.
  • the film material when an SEBS gel material is used in the cushion, the film material will likely comprise SEBS thermoplastic film.
  • the film materials may typically have a Shore A hardness of between about 40 to about 95 and may typically have a thickness of between 0.025 mm and 0.25 mm.
  • the individual layers of film will have the same thickness.
  • individual layers of film will have different thicknesses. In practice, varying the thickness of the film will affect the softness and flexibility of the film and will likewise affect the softness and flexibility of the final gel cushion product.
  • a thermoplastic polyurethane film is used and may be at least 0.025 mm thick.
  • polyurethane material will be understood to encompass polymers that contain a plurality of urethane linkages and comprised of either aliphatic or aromatic isocyanate prepolymers, and combinations thereof, both with either di or trifunctional polyol polymers or prepolymers.
  • the polyurethane material may optionally also contain other kinds of chemical linkages formed from the reactions of polyisocyanates, including but not limited to urea linkages, isocyanurate linkages, oxazolidone linkages, biuret linkages, allophanate linkages, combinations of these, and the like.
  • Polyurethane gel materials are typically formed by reacting polyisocyanates with polyols.
  • poly isocyanates include those formed from aliphatic or aromatic isocyanate prepolymers or combinations thereof.
  • polyols include di or trifunctional polyol polymers or prepolymers.
  • polyols used include polyether polyols such as poly(ethylene oxide) and poly(propylene oxide), modified polyether polyols, polytetramethylene glycol, condensation polyester polyols produced by reacting dicarboxylic acids with diols, lactone-type polyester polyols produced by ring opening polymerization of epsilon-caprolactone or the like, and polycarbonate polyols, vinyl polymers into which hydroxyl groups are introduced such as polyols having polyisobutylene as the main chain.
  • the gel layer can also be made from a non-foam elastomer such as the class of materials known as viscoelastic polymers or silicone gels, which show high levels of damping when tested by dynamic mechanical analysis performed in the range of ⁇ 50 degree Celsius to 100 degrees Celsius.
  • Gels material can include, but not limited to, the Kraton family of styrene-olefin-rubber block copolymers, thermoplastic polyurethanes, thermoset polyurethanes, thermoplastic poly olefins, polyamides, polyureas, polyesters and other polymer materials that reversibly soften as a function of temperature.
  • the preferred elastomers are a Kraton block copolymer of styrene/ethylene-co-butylene/styrene (SEBS) or styrene/butadiene/styrene (SBS) with mineral oil incorporated into the matrix as a plasticizer.
  • SEBS styrene/ethylene-co-butylene/styrene
  • SBS styrene/butadiene/styrene
  • pressure sensitive adhesives also known as contact adhesives
  • contact adhesives are those that form viscoelastic bonds that are aggressively and permanently tacky, adhere without the need of more than slight pressure, and require no activation by water, solvent or heat.
  • Pressure sensitive adhesives are typically available in solvent and latex or water based forms and are often based on non-crosslinked rubber adhesives, acrylics or polyurethanes.
  • the pressure sensitive adhesives may comprise acrylic and methacrylate adhesives, rubber-based pressure sensitive adhesives, styrene copolymers such as styrene-isoprene-styrene (SIS) and styrene-butadiene-styrene (SBS) copolymers with at least one tackifier, and silicones.
  • Acrylic adhesives often use an acrylate system such as ethylene ethyl acrylate (EEA) or ethylene methyl acrylate (EMA) copolymers, which are used to form hot melt PSA adhesives.
  • Natural rubber, synthetic rubber or elastomer adhesives may typically comprise a variety of materials such as silicone, polyurethane, chloroprene, butyl, polybutadiene, isoprene or neoprene. Rubber and elastomers are characterized by their high degree of flexibility and elasticity.
  • the pressure sensitive adhesive material may comprise acrylate-based adhesive materials.
  • the thickness of the layer of the pressure sensitive adhesive material may be varied by those of ordinary skill in the art according to the adhesive material used and the desired tack. In the practice of certain example embodiments of the invention, the pressure sensitive adhesive may have a thickness of between about 0.0125 mm and about 0.25 mm.
  • An additional aspect of the invention comprises a method of manufacturing a cushioning element comprising a polyurethane gel material, which method comprises the step of bonding a polyurethane gel and a thermoplastic film material, wherein the thermoplastic film material comprises a pressure sensitive adhesive.
  • the pressure sensitive adhesive layer cannot bond directly to the soft polyurethane gel during the molding process.
  • a layer of thermoplastic film material comprising the pressure sensitive adhesive layer was added to the mold and bonded to the polyurethane gel.
  • the cushioning element is prepared by a direct molding process where the gel material is applied directly to the mold, for example by injecting the gel prepolymer into the mold cavity.
  • the film material layer comprising the pressure sensitive adhesive is applied to the mold cavity with the adhesive on the side of the film material closest to the mold and then the PU gel material is injected into the mold over the film material.
  • the mold can be treated to resist bonding of the pressure sensitive adhesive or a release liner material can be applied in the mold first before the film material is applied to the mold.
  • the mold may be preheated to the desired curing temperature prior to injecting the gel material or heated after all materials are loaded into the mold.
  • the mold temperature is typically between 85-95 C and the cycle time is approximately 8 min.
  • the pressure is typically low and not critical for this type of operation provided that the pressure is high enough to fill the cavity-mold with polyurethane prepolymer.
  • the gel cushion can be manufactured by direct molding process.
  • the thin release liner laminate comprises the bottom layer assembly of the gel cushioning element and also aids in the ease of removing the formed gel cushioning element from a mold.
  • the top thermoplastic film comprises the cover layer of the liner during the molding process.
  • the release liner can be kept on the product when packaged for sale and discarded before applying the gel cushioning element to a surface, such as a shoe or other article of footwear.
  • the cushioning device may further comprise a synthetic rubber foam, a woven cotton fabric, a synthetic fiber, a knit fabric, a polyvinyl chloride film, and/or a synthetic non-woven fabric.
  • the products of the invention can be formed into any shape suitable for use as a cushioning device, for example for insertion into footwear to prevent rubbing between sensitive skin and hard or exposed surfaces of the footwear.
  • the cushioning elements can also be applied to other garments e.g., hats, helmets, protective sporting gear such as elbow and knee pads and other garments requiring extra padding for comfort, sizing and/or safety.
  • Cushioning elements according to the invention may also be applied to surfaces which come in contact with body parts to provide protection from injury such as, e.g., chairs, desks, cabinets, tables, doors and door frames, among others. Depending on the size and shape of the object to which the cushioning element is applied, certain shapes will better protect different areas of the body from contact with the object.
  • the products are molded in the shape of, e.g., circles, parabolas, stars, squares, rectangles, rounded rectangles, half-moon, among others.
  • the appropriate shape of the cushioning element can be determined based on the size and surface of the object to which the cushioning element will be applied.
  • the cushioning element can be provided as a sheet of material that the user can cut to a desired shape.
  • the sheet of material can also be provided with preformed shapes that can be removed as desired for the appropriate protection from contact with the object.
  • a human wear test was conducted to compare the unmodified polyurethane gel cushion containing a sticky gel surface with a modified polyurethane gel cushion of the present invention containing a pressure sensitive adhesive. The test was run to determine if a cushioning device according to the invention would provide appropriate adhesion performance when compared to the unmodified polyurethane gel heel liner. Prior to the wear test, a probe tack test was conducted on both devices according to ASTM D 2979-01 to measure the force required to separate an adhesive and adherend shortly after they have been contacted under a defined load of known duration and at a specified temperature.
  • the devices were also tested for shear hold according to PSTC-107 A, which measures the adhesive material's ability to remain adhered under a constant load applied parallel to the surface of the material and substrate, in particular measuring the shear adhesion when applied to a vertical standard steel panel.
  • the two devices were determined to have the following adhesion tack and shear hold:
  • the two heel liner devices have essentially the same adhesion tack and shear hold, and would be expected to have the same adhesion performance in use, i.e., the ability to stay in place in a shoe under normal wear.
  • heel liner cushions formed according to the invention was then evaluated in a wear test by volunteers who inserted the devices into their shoes and wore them for three days of normal use.
  • the test subjects were divided such that 23 subjects evaluated the unmodified heel liners while 22 subjects evaluated the heel liner modified with PSA. Both the unmodified heel liners and the modified heel liners were similar in appearance so the test subjects did not know which device they were wearing. After three days, the test subjects were asked to rate their agreement or disagreement with whether the cushion stayed in place during normal use, rating according to a seven point scale:
  • the modified heel liners produced according to the subject invention containing the PSA produced an overwhelmingly positive feed back from users.
  • the unmodified heel liners showed equivocal results of positive and negative feed back.
  • the statistical analysis (p of 0.0041) of the wear test results indicated that the liners modified with PSA according to the invention provide a better adhesion performance during wear than the unmodified version, which result was unexpected based on the probe tack and shear hold tests on the cushions.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Vibration Prevention Devices (AREA)
US12/163,280 2008-06-27 2008-06-27 Cushioning device Abandoned US20090320324A1 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
US12/163,280 US20090320324A1 (en) 2008-06-27 2008-06-27 Cushioning device
MX2010014523A MX2010014523A (es) 2008-06-27 2009-06-26 Dispositivo de almohadillado.
AU2009262057A AU2009262057A1 (en) 2008-06-27 2009-06-26 Cushioning device
CA2728540A CA2728540A1 (en) 2008-06-27 2009-06-26 Cushioning device
BRPI0913961A BRPI0913961A2 (pt) 2008-06-27 2009-06-26 dispositivo de amortecimento
ARP090102381A AR072377A1 (es) 2008-06-27 2009-06-26 Dispositivos de proteccion
EP09771091A EP2310467A2 (en) 2008-06-27 2009-06-26 Cushioning device
JP2011516695A JP5244238B2 (ja) 2008-06-27 2009-06-26 クッションデバイス
PCT/US2009/048756 WO2009158560A2 (en) 2008-06-27 2009-06-26 Cushioning device
CO10162931A CO6331356A2 (es) 2008-06-27 2010-12-27 Dispositivo amortiguador con capa de gel y metodo para la construccion del mismo
US13/300,050 US20120060304A1 (en) 2008-06-27 2011-11-18 Cushioning device
JP2012181689A JP2012224868A (ja) 2008-06-27 2012-08-20 クッションデバイス
ARP130100387A AR089933A2 (es) 2008-06-27 2013-02-07 Dispositivos de proteccion
ARP130100386A AR089932A2 (es) 2008-06-27 2013-02-07 Dispositivos de proteccion

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BR (1) BRPI0913961A2 (es)
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US20120260533A1 (en) * 2011-04-18 2012-10-18 Columbia Sportswear North America, Inc. Adhering footwear
US9011980B1 (en) 2012-03-17 2015-04-21 Studio Lab, LLC Dampening device and method of making
US20160073734A1 (en) * 2013-04-23 2016-03-17 Fleximed Ag Insole
US9560896B1 (en) 2014-02-12 2017-02-07 Soxsols, Llc Insole for footwear
US9962902B2 (en) * 2013-04-08 2018-05-08 Technogel Italia S.R.L. Padding element for seats and method of manufacturing the same
US20190374370A1 (en) * 2016-12-02 2019-12-12 Leonard Vincent Waters Shear force negating plaster
WO2020036787A1 (en) * 2018-08-13 2020-02-20 3M Innovative Properties Company Cohesive compositions and articles
CN114098208A (zh) * 2021-12-22 2022-03-01 乐清市智能装备与制造研究院 防弹头盔及基于3d打印技术防弹头盔的制造方法

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US20110283562A1 (en) * 2010-05-21 2011-11-24 George Shrum Insole for footwear
US20170055640A1 (en) * 2010-05-21 2017-03-02 Soxsols, Llc Insole for footwear
US20120260533A1 (en) * 2011-04-18 2012-10-18 Columbia Sportswear North America, Inc. Adhering footwear
US9011980B1 (en) 2012-03-17 2015-04-21 Studio Lab, LLC Dampening device and method of making
US9962902B2 (en) * 2013-04-08 2018-05-08 Technogel Italia S.R.L. Padding element for seats and method of manufacturing the same
US20160073734A1 (en) * 2013-04-23 2016-03-17 Fleximed Ag Insole
US9560896B1 (en) 2014-02-12 2017-02-07 Soxsols, Llc Insole for footwear
US10045590B2 (en) 2014-02-12 2018-08-14 Soxsols, Llc Insole for footwear
US20190374370A1 (en) * 2016-12-02 2019-12-12 Leonard Vincent Waters Shear force negating plaster
WO2020036787A1 (en) * 2018-08-13 2020-02-20 3M Innovative Properties Company Cohesive compositions and articles
CN112566974A (zh) * 2018-08-13 2021-03-26 3M创新有限公司 胶粘剂组合物和制品
CN114098208A (zh) * 2021-12-22 2022-03-01 乐清市智能装备与制造研究院 防弹头盔及基于3d打印技术防弹头盔的制造方法

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CA2728540A1 (en) 2009-12-30
MX2010014523A (es) 2011-02-22
CO6331356A2 (es) 2011-10-20
JP2011525446A (ja) 2011-09-22
AR089933A2 (es) 2014-10-01
AR089932A2 (es) 2014-10-01
EP2310467A2 (en) 2011-04-20
AR072377A1 (es) 2010-08-25
BRPI0913961A2 (pt) 2015-10-20
AU2009262057A1 (en) 2009-12-30
JP5244238B2 (ja) 2013-07-24
JP2012224868A (ja) 2012-11-15
US20120060304A1 (en) 2012-03-15
WO2009158560A2 (en) 2009-12-30

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