Abstract: A tamper evident packaging material is described. The material is formed from a substrate having a weak skin layer and at least one additional layer. A pressure sensitive adhesive is applied to the weak skin layer. An electron beam cured coating having a non-migratory slip agent is disposed on the surface of the substrate opposite the weak skin layer. The weak skin layer has a lower Z tear strength than the affinity that the pressure sensitive adhesive has for itself and for the weak skin layer, such that at least part of the weak skin layer separates from the at least one additional layer when the pressure sensitive adhesive is sealed against the weak skin layer of a second substrate and the two substrates are subsequently pulled apart.

Abstract: A water based, cold seal, cohesive coating for bonding one or more substrates together to form a flexible package to contain an article, especially useful for snack food packaging. The cohesive coating includes about 25% to about 90% by weight of a natural rubber latex emulsion, about 10% to about 75% by weight of a non-self-crosslinking acrylic emulsion, about 0.01% to about 10% by weight water, and one or more ingredient selected from an anti-foam agent, ammonia, a surfactant, an anti-blocking agent, an inert filler, and a conditioning agent, so that in combination the components total 100% by weight of the composition. The use of a non-self-crosslinking acrylic emulsion provides an improved cold seal cohesive that may be employed with current high temperature converting systems and provides improved adhesion to substrates, enhanced cohesion to itself, reduced blocking and avoids seal deadening.

Abstract: Medical pressure-sensitive adhesive sheets having a pressure-sensitive adhesive layer on at least one side of a support so as to have an appropriate tack strength and acceptable processability. The pressure-sensitive adhesive layer is formed with a pressure-sensitive adhesive composed mainly of an acrylic polymer and a compatible component that is compatible with the acrylic polymer. The support layer contains a compatible component that is compatible with the acrylic polymer. The amount of the compatible component contained in the support layer is 70% or less of the amount of the compatible component contained in the pressure-sensitive adhesive layer and the support layer has an elongation of 200% or more without containing any compatible component.

Abstract: The present invention relates to an adhesive tape and to a method for its manufacture, the tape comprising: (A) a heat-activatable adhesive resin layer, wherein the resin is a polymer of one or more monomers selected from the group consisting of olefins, and (B) a pressure-sensitive adhesive layer, comprising an acrylic-type pressure sensitive adhesive, wherein said pressure sensitive adhesive layer is permanently and directly bonded to a first major surface of said heat-activatable adhesive layer. The present invention also relates to an intermediate article comprising the heat-activatable adhesive resin layer (A) releasably bonded to a support layer, to a composite article comprising the adhesive tape and a rubber article bonded to the second major surface of the heat-activatable layer (A), and to a vehicle comprising the composite article.

Abstract: A laminated product is provided which has no problems concerning hygienic safety or environment accompanying the use of solvent-based adhesives and which has been tenaciously bonded in a degree equal or superior to that attainable with conventional CR solvent-based adhesives. The laminated product is obtained by bonding a porous organic material and a cloth with an adhesive comprising, as major ingredients, a polychloroprene latex which is obtained by polymerizing 100 parts by mass of chloroprene with more than 0 part by mass and less than 2 parts by mass of an ethylenically unsaturated carboxylic acid in the presence of from 0.5 to 4 parts by mass of a polyvinyl alcohol and then adding a pH adjustor and a radical scavenger and which has a gel content in the chloroprene polymer of from 10 to 60 mass % and a pH of from 6 to 10, a tackifier resin and a metal oxide.

Abstract: [An object of the present invention is] to provide transfer tape that maintains strong adhesive strength but can be reliably cut at a stipulated position. The adhesive film contains needle-shaped particles. If the adhesive strength is made high, then the adhesion between the adhesive ingredients is increased, thus forming a film that is difficult to cut. If a force is applied to the band-shaped ribbon in a direction outside the plane in which the adhesive coating is applied, then the film of the adhesive coating becomes thin and the needle-shaped particles rupture the film and cut the adhesive film. Moreover, the cut adhesive film draws the cut end to the needle-shaped particles, and as a result it is cut completely without stringiness.

Abstract: An improvement applicable to a method for the production of a multi-layer identity card of plastic wherein the card comprises one or more card core layers bonded under the action of pressure and heat and printed on either side or on opposite sides with a covering layer applied to the printed side or sides of the card core. In accordance with the improvement a thermoplastic polymer adhesive is applied between and in direct contact with each covering layer and the respective printed side of the card core, the thermoplastic adhesive coating possessing at least one additive that increases the friction between the covering layer and the printed card core during lamination so as to prevent displacement of the printed card core in relation to the covering layer or layers.

Abstract: The invention relates to a self-adhesive or heat-sealable security information medium designed to be applied to a page of a security document and to receive printing and/or writing, comprising an adhesive layer and at least one covering layer that covers the adhesive layer, characterized in that the cohesive strength of the covering layer is less than the adhesive strength of the adhesive layer. The invention also relates to a method for the security protection of a page of a security document and to a security protection feature used in the security protection method. The invention also relates to a page of a security document possessing said security protection feature and to a passport possessing said page.

Abstract: An adhesive tape comprising a backing and a layer of adhesive on the backing. The backing comprises a biaxially oriented substrate which comprises an isotactic polypropylene composition. The tapes and backings of this invention can be severed readily using commercial tape dispensers having metal or plastic cutting teeth to produce cleanly serrated cut edges on the tape. The biaxially oriented substrate is preferably made from a resin comprising an isotactic polypropylene homopolymer having a melt flow rate greater than 8 grams/10 minutes, more preferably greater than 12 grams/10 minutes, and still more preferably greater than about 20 grams/10 minutes. One preferred way to obtain such a resin is to blend: A) at least one isotactic polypropylene homopolymer “A” having a weight average molecular weight of at least 350,000 grams/mole and melt a flow rate of about 0.5–8 grams/10 minutes, more preferably about 0.

Abstract: To provide an adhesive film that can be easily released leaving substantially no adhesive residue and without damaging the adherend surface when released from an adherend. A base material comprising at least a first resin film with a breaking elongation in the lengthwise direction of 300 to 1500% and a breaking strength of at least 2 kg/12 mm, and a second resin film with a lower breaking elongation and a higher flexural modulus than the first resin film is used. The second resin film can break before the first resin film when the base material is stretched.

Abstract: A laminate is provided that can easily attain safety standards, such as impact resistance, while cost reduction is aimed for, for example, when the laminate is provided on a display viewing surface. A display apparatus using the laminate is also provided. By using a filter for a display having a specified parameter, for example, containing a transparent adhesive layer or a transparent resin layer having a specified Young's modulus and a specified thickness, impact resistance is enhanced. By using the filter for a display containing an impact absorption layer having a specified penetration and a specified thickness, impact resistance is enhanced.

Abstract: A pressure sensitive adhesive optical film with a pressure sensitive adhesive layer laminated on at least one surface of an optical film, wherein the pressure sensitive adhesive layer has a value of no more than 5 N/25 mm for a P0 which is initial 90° peel strength at 23° C. and by a peeling speed of 300 mm/minute after an autoclave processing under a condition of 50° C.×5 atm×15 minutes, and a ratio (P1/P0) of a P1 to a P0 is no less than 2, which P1 is 90° peel strength after heating by a peeling speed of 300 mm/minute and at 23° C. after the pressure sensitive adhesive layer is given the above-mentioned autoclave processing and is furthermore given a heat-treatment at 80° C. for 2 hours.

Abstract: Adhesive tape for the flying splice of flat web material wound up into rolls, said tape having an adhesive face and a nonadhesive reverse and also two longitudinal edges (L1, L2), and having a main carrier coated unilaterally on the face with a self-adhesive composition, only part of the nonadhesive reverse being provided with at least one self-adhesive system, wherein the main carrier is composed, at least in the region of the self-adhesive system, of splittable material.

Abstract: A method of masking at least one edge of a part of a surface that is to be treated, especially in a vehicle, includes the steps of using an adhesive masking strip made of an elongate cellular material resistant to a surface treatment and at least one adhesive region. The adhesive masking strip is a half ellipse having at least one groove, at least part of the wall of which groove has a region inclined by an angle of less than 45° with respect to the at least one adhesive region. The at least one adhesive region of the adhesive masking strip is applied to at least part of the edge of the surface that is to be treated, by an operator guiding said strip by inserting part of at least one finger in the groove. After the treatment, the adhesive strip is detached from the surface.

Abstract: A device for fastening surfaces together in an effective, efficient, and preferably reversible bond is disclosed. This device is particularly useful in the construction industry for fastening roll goods, such as wall coverings, or mill work, such as moldings, to surfaces, such as walls. The fastening device comprises a susceptor sheet, preferably having a thickness of no greater than about 2 mils, and a heat-activateable adhesive on at least one surface of the susceptor, wherein adhesive is placed on the substrate in a very carefully and specifically-defined manner. The fastening device is activated by induction heating, preferably by a hand-held induction tool. The method of fastening surfaces together utilizing the fastening device described above is also disclosed.

Abstract: A lever device includes an elongated body and a double-sided stretch releasing adhesive attached to the body, whereby the body can be firmly adhesively bonded to a surface and cleanly removed from the surface without damaging the surface by stretching the adhesive. The device may include a base, a body member pivotally connected with the base, and stretch releasing adhesive arranged to attach the base and/or body member to a surface or object. The base may be pivotally connected with an end of the body member or to the middle of the body member.

Abstract: A laminate tape useful for insulating pipes, lines and the like is constructed of a tacky first layer containing asphalt and an insulative filler such as granulated cork adhered to a flexible second layer that is less tacky. The flexible second layer contains a rubber such as butyl rubber.

Abstract: A redetachable self-adhesive device a) whose reverse face is bonded with a strip of a double-sidedly adhering adhesive sheet in such a way that one end of the adhesive sheet projects beyond the device as a grip tab, b) the adhesive sheet is such that the bond made with it is redetachable by stretching pulling on the grip tab of the strip in the direction of the bond plane, wherein c) on its reverse face (2) the device (1), in the region (3A, 3B) situated against the grip tab (6) of the adhesive sheet strip (5) or and also partly against the free adhesive composition, has an average roughness Ra of 0.4–25 ?m.

Abstract: The present invention relates to an acrylic pressure-sensitive adhesive composition containing an acrylic polymer and a tackifier obtained by acid modification of a tackifier resin inherently free of an acid component; a pressure-sensitive adhesive tape including a substrate made of a film comprising an olefin polymer or a thermoplastic resin containing a carbonyl oxygen atom in the molecular skeleton, and the acrylic pressure-sensitive adhesive composition on at least one surface of the substrate, and the like. The invention provides an acrylic pressure-sensitive adhesive composition having high adhesive strength (particularly initial adhesive strength) to an adherend having lower polarity, such as an olefin polymer heretofore been considered poorly adhesive, wherein degradation of the adhesive strength after heating and preservation has been suppressed, as well as a pressure-sensitive adhesive tape comprising the composition.

Abstract: A carpet tape construction 10 designed for use on top of a layer of padding 100 and beneath the abutting edges of two segments of carpet 200 which form a seam 203 to prevent the peaking of the seam 203 in a finished carpet installation. The tape construction 10 includes a tape backing member 30 having a coating 50, hot melt adhesive provided on surface top 31 and a heat activated contact adhesive 60 on the bottom 32 surface of the backing member 30 so that the hot melt adhesives 50, an the heat activated contact adhesive 60 will penetrate and bond the carpet segments 200, 200 and the padding 100 to the backing member 30.