A dry adhesive article comprising: (i) a substrate comprising a primary surface and (ii) a layer of nanofibers disposed on the primary surface of the substrate in a random orientation, the layer comprising a polyacrylate block copolymer; wherein, the layer of nanofibers exhibit pressure-sensitive adhesion.

The present disclosure provides a core-sheath filament. The core-sheath filament includes an adhesive core and a non-tacky sheath, wherein the sheath exhibits a melt flow index of less than 15 grams per 10 minutes. The present disclosure also provides a method of printing an adhesive. The method includes a) melting a core-sheath filament in a nozzle to form a molten composition, and b) dispensing the molten composition through the nozzle onto a substrate. Steps a) and b) are carried out one or more times to form a printed adhesive. The core-sheath filament includes an adhesive core and a non-tacky sheath. Further, methods are provided, including receiving, by a manufacturing device having one or more processors, a digital object comprising data specifying an article; and generating, with the manufacturing device by an additive manufacturing process using a core-sheath filament, the article including a printed adhesive based on the digital object. A system is also provided, including a display that displays a 3D model of an article; and one or more processors that, in response to the 3D model selected by a user, cause a 3D printer to create a physical object of an article including a printed adhesive, using a core-sheath filament.

An adhesive-backed film with an adhesive layer having thermoplastic or thermoset filaments partially projecting therefrom, to promote fluid egress and repositionability.

A heat insulation sheet includes: a heat insulation layer formed as a nanofiber web form having a plurality of pores by electrospinning a polymeric material; and an adhesion layer laminated on one or both sides of the heat insulation layer and formed as a nanofiber web form by electrospinning an adhesion material, to thereby be made thin and have a plurality of fine pores, and to thus improve heat insulation performance.

Propylene-based elastomer compositions that include a blend of a majority polymer fraction having a higher Mw and a minority polymer fraction having a lower Mw, methods of making same, and hot melt adhesives including such compositions. The polymer blend compositions can include: a major polymer fraction having a Mw of about 100,000 to about 300,000 and a melt flow rate of about 0.1 g/10 min to about 70.0 g/10 min, according to ASTM D1238; and a minor polymer fraction having a Mw of about 5,000 to about 60,000 and a Brookfield viscosity of about 500 cP to about 50,000 cP, according to ASTM D-3236 (190 C.), wherein an amount of the at least one other polyolefin comonomer in the minor polymer fraction is at least 7 wt % less than an amount of the at least one other polyolefin comonomer in the major polymer fraction.

A construction composite comprising a construction article having a planar surface and a non-woven layer of pressure-sensitive adhesive disposed on the planar surface.

A pressure sensitive adhesive composite material may include a pressure sensitive adhesive layer that may include a pressure sensitive adhesive material, and a scrim layer that may include a grid of fibers. The scrim layer may be encased within the pressure sensitive adhesive layer. The pressure sensitive adhesive composite material may include a grid region of the fibers coated with the pressure sensitive adhesive material, and a plurality of window regions of the pressure sensitive adhesive material between the fibers. An average thickness of the plurality of widow regions is less than an average thickness of the grid region.

The invention relates to a method of producing a fibrillary dry adhesive material having a plurality of fibrils. Furthermore, the invention relates to a fibrillar dry adhesive material in particular having liquid super-repellency.

Disclosed herein, in part, are nanometers-thin and uniformly thick polymer films comprising an electrochemically polymerized polymer and a polyelectrolyte. Methods of preparing said nanometers-thin and uniformly thick polymer films are also provided.

A dry adhesive microfiber array comprising a plurality of fibers with tips adapted to contact a surface, where the dry adhesive is capable of adhering to the surface at elevated temperatures. The bonding strength of the dry adhesive remains constant or increases with increasing substrate/dry adhesive/carrier temperature. The dry adhesive can be debonded without leaving a residue on the surface of the substrate. In addition, the effect of temperature on bonding strength of the dry adhesive is reversible.