High capacity easy release extended use adhesive devices

{
  "publication_number": "US10150892B2",
  "country": "US",
  "kind": "B2",
  "title": "High capacity easy release extended use adhesive devices",
  "abstract": "The invention provides novel devices, systems, designs, materials and fabrication methods that enable high-load capacity, easy release, and suitable for extended/repeated use in a variety of applications.",
  "claims": [
    "1. A releasable surface-adhesive device, comprising: an adhesive pad, comprising: a planar backing layer; a planar layer of an elastic material having an adhesive surface on at least one side for adhering to a target surface, wherein a side of the planar layer of the elastic material opposing the adhesive surface is applied onto the backing layer, and wherein the backing layer has a higher in-plane stiffness than the planar layer of the elastic material.",
    "2. The releasable surface-adhesive device of claim 1, wherein the planar layer of the elastic material comprises two or more separate smaller elastic material layer units.",
    "3. The releasable surface-adhesive device of claim 1, further comprising a flexible tether attached to and extending from the backing layer of the adhesive pad.",
    "4. The releasable surface-adhesive device of claim 3, wherein an angle between the tether and the adhesive pad is adjustable.",
    "5. The releasable surface-adhesive device of claim 3, further comprising a holding component attached to the tether for connecting an object to the device.",
    "6. The releasable surface-adhesive device of claim 3, wherein the tether comprises at least one of fabric, rope, fiber, plastic sheet, tubing, rods, metal foil, chains, non-woven textile, cable, and leather.",
    "7. The releasable surface-adhesive device of claim 3 wherein the tether is attached to the adhesive pad away from an edge of the adhesive pad.",
    "8. The releasable surface-adhesive device of claim 3, wherein the tether is attached to the adhesive pad at the center of the adhesive pad.",
    "9. The releasable surface-adhesive device of claim 1, wherein the planar layer of the elastic material has a uniform thickness between 0.0001 cm to 0.1 cm.",
    "10. The releasable surface-adhesive device of claim 9, wherein the elastic material has an elastic modulus between 0.05 MPa to 50 MPa.",
    "11. The releasable surface-adhesive device of claim 10, wherein the elastic material comprises at least one of a siloxane-based elastomer, an urethane-based elastomer, an acrylate-based elastomer, a polydimethylsiloxane (PDMS), a block copolymer elastomer, a polyurethane, styrene-butadiene-styrene, and a natural rubber.",
    "12. The releasable surface-adhesive device of claim 11, wherein the backing layer comprises at least one of a fabric, foil, sheet, and film.",
    "13. A method comprising: attaching a flexible tether to the adhesive pad of the releasable surface-adhesive device of claim 1."
  ],
  "description_excerpt": "The invention generally relates to designs, devices, materials and methods useful for weight-bearing. More particularly, the invention relates to designs, devices, systems, materials and fabrication methods that provide adhesive devices that are high-load bearing, easy release, and suitable for extended/repeated use in a variety of applications.\n\nAdhesive materials that can support high capacity loads have traditionally been sought. Pressure sensitive adhesives (PSAs) are self-adhesives that form a bond when pressure is applied to marry the adhesive with the adherend. Typically, no solvent, water, or heat is necessary to activate or stimulate the adhesive to perform. Conventional PSAs have found use in pressure sensitive tapes, labels, note pads, automobile interior trims, and a wide variety of other products. There has been continued effort among the scientific community to create and produce synthetic materials and devices that mimic the performance of animals, such as geckos, in Nature.\n\nPSAs typically rely on ubiquitous surface force interactions, such as van der Waals forces, to transfer stress across an interface. Pressure sensitive adhesives can adhere to a surface because the adhesive is soft enough to flow, or wet, the adherend. The adhesive needs to be hard enough to resist flow when stress is applied to the bond at the interface. PSAs exhibit viscoelastic (viscous and elastic) properties, both of which may be used for creating proper bonding.",
  "cpc": [
    "C09D 5/20",
    "A44B 18/0069",
    "B32B 2307/748",
    "B32B 37/12",
    "B32B 37/16",
    "B32B 5/02",
    "B32B 7/00",
    "B32B 7/10",
    "C09J 175/04",
    "C09J 183/04",
    "C09J 2201/28",
    "C09J 2201/622",
    "C09J 2203/00",
    "C09J 2301/16",
    "C09J 2301/204",
    "C09J 2301/312",
    "C09J 2400/263",
    "C09J 2427/001",
    "C09J 2427/006",
    "C09J 2433/00",
    "C09J 2475/00",
    "C09J 2483/00",
    "C09J 2483/006",
    "C09J 7/00",
    "C09J 7/048",
    "C09J 7/205",
    "C09J 7/21",
    "C09J 7/22",
    "C09J 7/30",
    "C09J 7/38",
    "C09J 7/40",
    "Y10T 24/33",
    "Y10T 428/24612",
    "Y10T 428/2481",
    "Y10T 428/2848"
  ],
  "ipc": [
    "C09D 5/20",
    "C09J 7/00",
    "C09J 7/21",
    "C09J 7/30",
    "C09J 7/38",
    "A44B 18/00",
    "B32B 37/12",
    "B32B 37/16",
    "B32B 7/00"
  ],
  "assignees": [
    "University of Massachusetts Amherst"
  ],
  "inventors": [
    "Alfred J. Crosby",
    "Michael D. Bartlett",
    "Andrew B. Croll",
    "Daniel King"
  ],
  "filing_date": "2017-01-20",
  "publication_date": "2018-12-11",
  "grant_date": "2018-12-11",
  "priority_date": "2010-10-21",
  "application_number": "US-201715411734-A",
  "family_id": "46207638",
  "cited_by_count": 4,
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