Abstract: A hot melt adhesive and a laminar structure fabricated from a blend comprising a modified or unmodified ethylenic copolymer, a modified or unmodified butene-1 homopolymer or copolymer, a stabilizer and one or more of: a tackifying resin compatible with the major amount of modified polymer, a wax, and atactic polypropylene.

Abstract: A silicone release paper comprises a porous and highly absorbent paper substrate integrated with a radiation-insensitive hardened hot melt barrier coating, upon which coating a radiation-cured silicone coating layer has been secured. The barrier coating is formed of a material having a viscosity sufficiently low that the material permeates the porous paper substrate. A pressure-sensitive adhesive may be provided on the side of the paper opposite to that on which the silicone coating layer has been secured.

Abstract: Cover with a self-adhesive finish on one side and strip-like application of adhesive, characterized in that the cover is in the form of extensible folds and only one of the outer surfaces of the folded structure carries adhesive.

Abstract: A polyethylene composite film suitable for packaging, which is superior in moistureproofness, flex-o-crack resistance, tearability and heat-sealing property, is provided comprising an oriented polyethylene film such that the degree of cross-linking inwardly decreases across the thickness of the film and at least one lamination layer, provided on one side of the oriented polyethylene film consisting of a lamination material having a heat shrinkage of less than 5% at 120.degree. C.

Abstract: An electrically conductive article comprising a dielectric substrate, such as a fabric, e.g., fiberglass fabric, and an electrically conductive inorganic nickel sulfide layer which is adherent to the substrate and has good electrical conductivity and stable electrical characteristics at high temperature. Such article is produced by contacting a porous dielectric substrate, such as fiberglass fiber, with an aqueous solution containing a soluble nickel salt, such as nickel sulfate, and a sulfur donor, such as sodium thiosulfate, drying the resulting wet substrate at ambient temperature, and heating the resulting substrate at elevated temperature of about 100.degree. C. to about 400.degree. C. to form an electrically conductive layer of nickel sulfide on the substrate.

Abstract: There is provided a radiation-curable adhesive tape comprising a radiation-curable adhesive layer which is formed on a radiation transmitting substrate. The radiation-curable adhesive layer is composed of an acrylic adhesive and radiation-curable compound having carbon-carbon double bonds. The radiation-curable tape can be used preferably in processing steps for the production of semiconductor wafer, ceramics and glass employing a direct picking-up system.

Abstract: This invention is directed to polyethylene bags or film. More particularly, this invention is directed to a sealable transparent film structure for hot-fill having one or more layers, at least one layer comprising a blend of(a) from about 20 to 50 parts by weight of a terpolymer of ethylene, propylene, and butene or hexene, or from about 20 to 50 parts by weight of a propylene modified rubber and 3% maleic anhydride,(b) from about 20 to 75 parts by weight of polypropylene, and(c) from about 20 to 75 parts by weight of Hmw-HDPE resin.

Abstract: Novel flame-retardant conformable adhesive tapes consisting essentially of: (1) a water-impermeable chlorinated polyethylene backing layer from about 1 to 3 mils thick; (2) an evenly tearable synthetic fiber cloth or scrim; (3) a flame-retardant adhesive layer, preferably a rubber-based adhesive; and (4) a thin tie coat layer between the backing and the scrim which, when applied as a molten mass, at least partially fills the interstices between the fibers of the scrim so as to provide surface contact with the underlying adhesive layer, the tie coat providing a strong bond at both the tie coat/backing interface and the tie coat/scrim and adhesive interfaces, thereby providing a laminar product possessing the desired anchorage and structural stability and integrity.The tape is particularly useful in wrapping irregular surfaces, e.g. as a wire harness wrap, where high conformability is essential to good adhesive contact.

Abstract: A carpet cushion of compressible materials such as urethane foam, natural fibers or felt material has a pressure sensitive adhesive pre-coated on only one side, preferably the side which will be adhered down to a floor. A scrim webbing or other spacer element is laid into the pressure sensitive adhesive after the adhesive has been applied. The spacer element enables the movement of the carpet cushion around on the floor for positioning prior to sticking down to the floor, and when the cushion is rolled for storage and shipment, the spacer element enables the cushion to be rolled without any release film between the rolled layers. In the rolled form of the cushion, the spacer element or scrim webbing prevents the adhesive from strongly adhering to the adjacent opposite surface of the cushion in the roll.

Abstract: A method of imparting heat resisting properties to synthetic plastics materials comprises incorporating in the material an organic antioxidant each molecule of which contains a reactive hydrogen atom and does not become an oxidation radical when the hydrogen atom is replaced by a free radical obtained from the polymer.

Abstract: Normally tacky and pressure-sensitive adhesive, having excellent long-term adhesion to plasticized vinyl substrates, is prepared from a representative blend of dioctyl phthalate plasticizer and a copolymer of isoctyl acrylate, N-vinyl pryrrolidone, and acrylic acid; alternatives for each component are disclosed. In a preferred embodiment of the invention, the adhesive is coated in a thin layer on a sheet backing material to form a normally tacky and pressure-sensitive adhesive tape.

Abstract: A removable self-adhesive sheet with a writable surface, for application to written surfaces to and from which it can be repeatedly applied and removed a large number of times always maintaining good adhesion but without compromising the written surface.

Abstract: An article can be releasably attached to a fabric or other foraminous substrate by means of a pressure-sensitive adhesive tape fastener, the backing of which has an array of bluntly pointed stems protruding beyond the pressure-sensitive adhesive. The back face of the fastener can have an adhesive layer by which it can be adhered to a sanitary napkin, and the napkin can be releasably attached to an undergarment by allowing the stems to penetrate into openings in the fabric of the undergarment until the pressure-sensitive adhesive becomes releasably bonded to the fabric. The fastener can be more supple and less obtrusive than are "Velcro" fasteners and can be produced at significantly lower cost.

Abstract: A 10 to 200 .mu.m thick film comprised of high density polyethylene having a density of 0.935 g/cm.sup.3 or more, the high density polyethylene type film having a film surface roughness of 0.001 to 0.15 .mu.m, a coefficient of C axis orientation of the cyrstals in the film (Fc) of 0.10 to 0.50, a difference .DELTA.n of the birefringence of the amorphous portions and crystalline portions in the film of 0.1000 to 0.1070, and a transparency of a haze of less than 10%. Such a film can be produced by passing an original material film through three heating rolls, designated as, for example, the first heating roll (hereinafter referred to as "R.sub.1 "), the second heating roll (hereinafter referred to as "R.sub.2 "), and the third heating roll (hereinafter referred to as "R.sub.3 "), in accordance with the order of the passage of the original material film, at a temperature of R.sub.2 higher than the temperatures of R.sub.1 and R.sub.3 and a temperature of R.sub.2 of 105.degree. C.

Abstract: A contamination control mat configuration and tool for removing sheets therefrom provide for more effective and efficient removal of contamination control sheets. The shape of the mat has a perimeter defining a closed plane figure having an axis extending in a direction about which the closed plane figure is substantially symmetric. The figure has at least one converging portion at an end of the closed plane figure converging toward and terminating adjacent the tab wherein the tab extends away from the figure substantially in the same direction as the axis. The tool is a roller having a rotatable roller bar supported by a bracket and handle and further including an apparatus for applying an adhesive to the roller bar.

Abstract: Novel collapsible cores for adhesive tape rolls adapted to inhibit telescoping or migration of the adhesive tape off the roll after tape roll manufacture; and adhesive tape rolls prepared therefrom.

Abstract: A plastic sealing tape for resealable flexible packaging comprising a tape having a first section provided with a permanent high-tack adhesive, and a second section being provided with a low-tack adhesive and being folded onto itself with the interposition of a layer of silicone, the second section having a free end being adhesive free.

Abstract: Oriented polyester films primer coated with a hydrolyzed amino silane are disclosed. These silanes in the unhydrolyzed state have the formula:XSi(R.sup.2).sub.a (R.sup.3).sub.bwherein X is a radical selected from the group consisting of H.sub.2 NR.sup.1 HNR.sup.1 -- and H.sub.2 NR.sup.1 HNR.sup.1 HNR.sup.1 --; the R.sup.1 's are the same or different groups selected from the group consisting of C.sub.1 and C.sub.8 alkyl or phenyl; R.sup.2 is a hydrolyzable group selected from the group consisting of C.sub.1 to C.sub.8 alkoxy, an acetoxy group or a halide; R.sup.3 is a nonreactive, nonhydrolyzable group selected from the group consisting of C.sub.1 to C.sub.3 alkyl or phenyl; (a) is an integer ranging from 1 to 3; (b) is an integer ranging from 0 to 2, with the sum of (a) and (b) being 3.The hydrolyzed aminosilane is applied to the film as an aqueous solution at any suitable stage during manufacture of the film, i.e., before or during the stretching operation, or it may also be applied to the finished film.

Abstract: An impregnation-printed molded article comprises an article molded of a composition consisting of a thermoplastic polyester resin (A) and, in mixture therewith, a thermoplastic polymer compound (B) containing as a polymer skelton component unit at least one kind of material from the group consisting of butadienes, styrenes, acrylonitriles, and acrylates, said molded article being impregnation-printed.

Abstract: Powders of tetrafluoroethylene copolymer having a non-spherical particle shape, a frictional packing ratio of 20 to 100% and an average particle size of 5 to 500 .mu.m. The powders are useful for powder coatings, particularly roto-moulding, roto-lining and electrostatic coating.