Abstract:
An optical film laminate which is less apt to have adhesive deficiencies or cause adhesive soils. The optical film laminate comprises an optical film layer 1 and a pressure-sensitive adhesive layer 3, wherein non-tacky powders 5 are adhered to edge surfaces of the pressure-sensitive adhesive layer.
Abstract:
A venting tape for use in venting an enclosed article space to be filled with an injected expandable foam material. The venting tape includes a polymeric film having a plurality of minute perforations formed therethrough. The perforations are sized to allow the passage of a gas therethrough yet prevent the passage of expandable foam insulation. The venting tape further includes an adhesive layer on one side of the film in a pattern enabling a substantial portion of the minute perforations to remain uncovered by the adhesive layer.
Abstract:
The present invention relates to a hot melt adhesive composition useful for articles such as plasters, bandages and tapes which are adhesively adhered to skin. The adhesive may be coated continuously and preferably, discontinuously onto a substrate. More preferably, the hot melt adhesive composition is pattern-coated. The adhesive is permanently adhered to at least one substrate of the article and removably or releasably attachable to skin. The adhesive advantageously does not cause skin irritation nor transfers adhesive to the skin upon removal.
Abstract:
An adhesive coating or layer has a differential height barrier structure deposited on the surface of one or both sides. Consequently, a highly aggressive adhesive formulation can be temporarily neutralized so as not to resist sliding of an item being positioned on the surface, until pressure is deliberately applied. Conversely, the adhesive system can be carried by decorative sheet material for easy application of the sheet material to cover a wall or floor, whereby the sheet can be slid into exact position without "sticking", before permanent adhesion. The present invention may be implemented by forming an array of discrete surface barrier structures which cover 10-30% of the active surface area of the adhesive. The barrier is preferably formed by an array of minute units of hard material or other discrete structures distributed on the adhesive surface and projecting therefrom by about 0.00025-0.0005 inch.
Abstract:
A medical patch material has a support coated with an even and porous spread of pressure sensitive hot-melt adhesive coating, formed by means of gravure printing, has a sufficient porosity and a resulting vapor permeability to skin moisture on the one hand, as well as an absolute bacteria-impermeability and reliable adherence of the patch material on the other hand. This is achieved by the fact that the pressure sensitive hot-melt adhesive spread:a) forms coherent webs in the lengthwise and transverse direction, which include island-shaped adhesive-free areas;b) that the proportion of the adhesive-free areas amounts to between 30 and 60%, preferably between 40 and 57% of the total surface, andc) that the coat weight of the adhesive amounts to between 30 and 160 g/m.sup.2, preferably between 40 and 120 g/m.sup.2.
Abstract:
A component in the form of a substrate (10) comprises spacing means (14) extending in a direction outwardly from a surface (11) of the substrate (10) which spaces the surface (11) and any substance (13), such as an adhesive, carried thereon from any other surface when located adjacent the component. The spacing means (14) has a nonadhesive contactable surface and is non-deformable in normal use of the component so as to inhibit contact between the said surface (11), or any substance (13) carried thereon, and the said other surface.
Abstract:
A double-sided adhesive-coated foam tape particularly for bonding two adjacent rigid surfaces in which fine grooves on one or both sides of the tape facilitate air venting to minimize non-contact areas. The tape is used by affixing one side of the tape--the non-grooved side if only one side of the tape is grooved--to a first rigid surface to be adhered, removing the release liner from the grooved tape surface and pressing onto the grooved tape the second rigid surface intended for bonding. The grooves in the tape are fine enough that, once the two surfaces to be bonded are in position, the grooves largely or completely disappear.
Abstract:
There is provided an adhesive closure tab with release surfaces adjacent adhesive surfaces by coating a continuous region of a tape backing with a soluble low adhesion backsize composition, drying, then solvent zone coating an adhesive on at least one strip of said tape backing previously coated with the low adhesion backsize thereby slightly dissolving said backsize so as to promote adherence of said adhesive to said backsize.
Abstract:
An edhesive tape has a flexible carrier web that has a low-adhesion face formed with a predetermined pattern of dimples, each of which contains a plurality of electrically conductive particles that can either be loose or bound together into clusters by a binder. An adhesive layer covers said face and deposited particles and can be a pressure-sensitive adhesive or a heat-activatable adhesive. When the adhesive layer is separated from the carrier web, it carries along the particles. When the particle-bearing adhesive layer is used to bond together two arrays of electrodes, facing pairs of the electrodes are electrically interconnected either by single particles or by clusters of the particles. When a binder is used to bind the electrically conductive particles into clusters, the binder can add to the strength of the adhesive bond between the electrode-bearing surfaces.
Abstract:
Residuelessly redetachable contact-adhesive sheet-like structures wherein are provided approximately calotte-shaped bonding sites which are up to about 600 .mu.m in diameter at the base where the calottes stick to the sheet-like structure and which are produced by screen or gravure printing using high-solids dispersion of adhesive substance.