A composite dry adhesive includes (a) an adhesive layer comprising a shape memory polymer and (b) a resistive heating layer comprising a shape memory polymer composite on the adhesive layer. The shape memory polymer composite includes conductive particles dispersed in a shape memory polymer matrix, where the conductive particles have a concentration sufficient to form a conductive path through the resistive heating layer.

A composite dry adhesive includes (a) an adhesive layer comprising a shape memory polymer and (b) a resistive heating layer comprising a shape memory polymer composite on the adhesive layer. The shape memory polymer composite includes conductive particles dispersed in a shape memory polymer matrix, where the conductive particles have a concentration sufficient to form a conductive path through the resistive heating layer.

The present disclosure relates to a UV-curable composition and adhesive film, adhesive tape and bonding member containing the same. Said UV-curable composition is a UV-curable composition catalyzable by photobase. Said UV-curable composition comprises (1) acrylic polymer and/or ethylene-vinyl acetate copolymer; (2) curable components, comprising polyfunctional mercaptan and polyfunctional epoxy resin; and a (3) photobase generator. The composition of the present disclosure can be coated into an adhesive tape or adhesive film; such adhesive tape or film possesses initial adhesion before UV curing is carried out and can have the strength of a semi-structural adhesive or a structural adhesive after UV curing is carried out.

Curable compositions include a urethane (meth)acrylate oligomer having a number—average molecular weight of at least 6000 g/mol; at least one mono(meth)acrylate monomer; a multifunctional crosslinking monomer chosen from acrylate monomers, methacrylate monomers, or combinations thereof; and an ethylene-vinyl acetate grafted terpolymer. The mono(meth)acrylate monomers may include a first mono(meth)acrylate with Tg between 50° C. and 175° C. and a second mono(meth)acrylate with Tg between −50° C. and 30° C. The curable compositions may be applied onto a surface of a substrate then cured to form a low-tack adhesive layer on the surface. The curable compositions may be cured by exposure to visible radiation, UV radiation, LED radiation, laser radiation, electron-beam radiation, peroxide, accelerator, or heat. Methods for bonding substrates include contacting a second substrate to a tow-tack adhesive layer on a first substrate, then heating the low-tack adhesive layer to bond the substrates and form a laminate.

The present invention relates to a composition of a hot-melt adhesive film and a method for producing a shoe sole. The composition of the hot-melt adhesive film comprises a hot-melt adhesive material and an electromagnetic radiation absorbing material. The hot-melt adhesive material includes ethylene vinyl acetate and thermoplastic materials. The electromagnetic radiation absorbing material is uniformly dispersed in the hot-melt adhesive material. Energy of an electromagnetic radiation can be absorbed by the electromagnetic radiation absorbing material, thereby producing thermal energy, further increasing temperature and adhering property of the hot-melt adhesive film. Therefore, a midsole and an outsole of the shoe sole can be adhered by the hot-melt adhesive film. Further, the hot-melt adhesive film is made from recyclable materials. Therefore, the hot-melt adhesive film is fully recyclable.

The present invention relates to a composition of a hot-melt adhesive film and a method for producing a shoe sole. The composition of the hot-melt adhesive film comprises a hot-melt adhesive material and an electromagnetic radiation absorbing material. The hot-melt adhesive material includes ethylene vinyl acetate and thermoplastic materials. The electromagnetic radiation absorbing material is uniformly dispersed in the hot-melt adhesive material. Energy of an electromagnetic radiation can be absorbed by the electromagnetic radiation absorbing material, thereby producing thermal energy, further increasing temperature and adhering property of the hot-melt adhesive film. Therefore, a midsole and an outsole of the shoe sole can be adhered by the hot-melt adhesive film. Further, the hot-melt adhesive film is made from recyclable materials. Therefore, the hot-melt adhesive film is fully recyclable.

A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.

A composition is described comprising semicrystalline polylactic acid polymer; polyvinyl acetate polymer having a glass transition temperature (Tg) of at least 25° C.; plasticizer; and optionally amorphous polylactic acid polymer. In another embodiment the composition further comprises nucleating agent. Also described are films comprising the composition as well as articles, such as a tape or sheet, comprising the film described herein and a layer of pressure sensitive adhesive disposed on the film.

A two-part formulation of a high strength acrylic adhesive that includes a Part A and Part B. The Part A includes at least one curable monomer of: Part A acrylate monomer, methacrylate monomer, acrylic acid monomer, methacrylic acid monomer, or a combination thereof; a Part A impact modifier; and a Part A adhesion promoter. A Part B includes impact modifier, a Part B adhesion promoter, and an induction agent. A polyvinyl acetal resin is present in at least one of Part A or Part B, and present from 1 to 30 total weight percent. A process of applying the resulting adhesive to bond substrates and a resulting structure are also provided.

Methods of bonding together substrates that do not require use of primers, mixing, fixturing, or autoclaving. These methods can include the steps of disposing an adhesive layer on a bonding surface of either substrate, the adhesive layer comprising a curable composition that is dimensionally stable at ambient conditions; either before or after disposing the adhesive layer on the bonding surface, irradiating the adhesive layer with ultraviolet radiation to initiate curing of the curable composition; placing one substrate so as to be bonded to the other substrate by the adhesive layer; and allowing the adhesive layer to cure.