摘要:
A method of making a pressure sensitive adhesive article includes depositing a layer of liquid adhesive material onto a substrate, and depositing a layer of non-adhesive liquid material onto the liquid adhesive material, wherein the non-adhesive liquid material covers only a portion of the liquid adhesive layer. The liquid layers can be cured which allows winding the article onto a spool. The pressure sensitive adhesive article includes a substrate with a liquid adhesive layer deposited onto the substrate. At least one liquid non-adhesive structure is deposited onto a portion of the liquid adhesive layer, and the structure can have a theoretical angle of contact with the adhesive layer which is greater than 0°.
摘要:
Three-dimensional flexible adhesive film structures are described which exhibit tack on demand characteristics. The film is capable of showing minimal or no tack under normal handling conditions, but when pressed against a target surface, exhibits the desired adhesion.
摘要:
A high Tg acrylic polymer is provided as well as an epoxy-blend thereof for use as a pressure sensitive adhesive. The high Tg acrylic polymer comprises a copolymer of an alkyl (meth)acrylate monomer having a Tg>20null C., a C1-30 (meth)acrylate monomer, an nitrogen-containing polar monomer, and a polymerizable epoxy-containing monomer, with the polymer having a Tg>50null C. When blended with an epoxy resin, the resulting mixture exhibits desirable pressure sensitive adhesive properties and may be thermocured.
摘要:
A flexible pressure-sensitive food grade wrap film, and a process for manufacturing the film. The film includes a substrate overcoated with a pressure-sensitive adhesive, a release overprinted on the adhesive that prevents the adhesive from clinging to the surface of an article or to itself without applying pressure, and, optionally, a release coating on the opposite side of the substrate. Once pressure is applied to the film, the film flexibility allows the adhesive to contact the surface of the article or itself and subsequently adhere to hold the film in place or to form a sealed pouch around an article. The pressure-activated contact and adhesion to an article or to itself are designed to form a tight, spill-resistant physical bond that seals liquid or solid contents in a container, or forms a sealed pouch around a solid article.
摘要:
An adhesive wrapping film having a continuous tackifier layer (A) on at least one side surface of a substrate layer (B) whose surface has a concavo-convex form, wherein a thickness of the tackifier layer at the concave portion of the substrate layer is larger than that at the convex portion of the substrate layer, and a thickness of the substrate layer BAV, a thickness of the tackifier layer at the concave portion of the substrate layer Amax a ten-point average roughness of the surface of the tackifier layer corresponding to a height of the convex portion of the tackifier layer RZ(A) and a ten-point average roughness of the surface of the substrate layer corresponding to a height of the convex portion of the substrate layer RZ(B) satisfy a relation of the following conditional expressions (1) and (2): (1) Amax
摘要:
The present invention relates to a sheet adhesive by pressure application including a substrate covered with an adhesive on a front surface, and non-adherent elements protruding with respect to the front surface and likely to yield by application of a pressure. The substrate includes a meshing of channels opening at least at one edge of the sheet, and the non-adherent elements are bands forming roofs above the channels.
摘要:
Electrically conductive elements on two substrates can be electrically interconnected by an adhesive tape containing electrically conductive particles, most of which are substantially uniformly spaced from their six nearest neighbors. Preferably the particles are spherical and of substantially equal diameter slightly exceeding the thickness of the adhesive layer. The adhesive tape can be made by forming a dense monolayer of the particles, covering a stretchable adhesive layer with that dense monolayer, biaxially stretching the adhesive layer to separate each particle from other particles of the monolayer, and then embedding the particles either into that adhesive layer or into the adhesive layer of another tape.
摘要:
A pressure-sensitive adhesive tape or sheet is reliably repositionable by having a plurality of spaced clumps of particles uniformly distributed over at least one surface of the pressure-sensitive adhesive layer with the tips of the clumps of particles being substantially free from adhesive, which particles are smaller than the thickness of the pressure-sensitive adhesive layer. Preferred particles are glass beads which may be from 5 to 15 .mu.m in diameter when the thickness of the pressure-sensitive adhesive layer is about 25 .mu.m. Each clump preferably contains from 5 to about 100 particles. The pressure-sensitive adhesive layer can be covered with a carrier web which has a low adhesion surface that is formed with depressions that protect the clumps of particles.
摘要:
The laminate of an embodiment is a laminate including an antireflection film and a protection film bonded onto the antireflection film, wherein the surface of the antireflection film includes a plurality of protrusions; the protection film includes a supporting film and an adhesive layer; the adhesive layer includes an adhesive agent, a copolymer, and a carboxyl group-containing monomer; the weight average molecular weight of the copolymer is 1000000 or more and 2000000 or less; the copolymer includes the (meth)acrylic acid alkyl ester with the alkyl group having 4 or less carbon atoms in the largest weight proportion among the monomer components; the acid number of the copolymer is 16 mg KOH/g or more and 120 mg KOH/g or less; and the mixing amount of the epoxy cross-linking agent in relation to 100 parts by weight of the copolymer is 1.5 parts by weight or more.
摘要:
A laminate and process of making the laminate is disclosed comprising: a surgical mesh having first and second surfaces; and an adhesive structure having adhesive and non-adhesive surfaces, wherein the non-adhesive surface of the adhesive structure is laminated to at least one of said first and second surfaces of said surgical mesh, and the adhesive surface of said adhesive structure has protrusions extending therefrom comprising a resin having a Young's modulus of greater than 17 MPa, which protrusions are of sufficiently low diameter to promote adhesion by increasing physical attractive forces between the adhesive structure and a target surface, as measured by shear adhesion.