摘要:
A strip material from which portions may be severed and used together as a releasably engageable fastener. The strip material comprises a bonding layer in which are embedded a plurality of U-shaped monofilaments. Each U-shaped monofilament includes two headed stem portions adapted to engage the headed stem portions of another portion of the strip material. The U-shaped monofilaments are disposed in generally straight rows longitudinally of the strip material with a percentage of the center to center spacing dimensions between adjacent longitudinal rows being less than a maximum dimension equal to the diameter of the heads plus the diameter of the stems so that slippage of heads longitudinally of the strip material between these closely spaced rows will be restricted, and with the center to center spacing dimension between the rest of the adjacent rows being greater than the maximum dimension and being selected to help provide a desired level of engagement and disengagement forces between the portions. The U-shaped monofilmanets are also disposed in zig-zag rows transverse of the strip material and are spaced and shaped so that slippage of heads transversely of the strip material between the zig-zag rows will also be restricted and to help provide a desired level of engagement and disengagement forces between the portions. Thus, upon engagement the rows of headed stem portions of one portion of the strip material cannot readily slip between the rows of headed stem portions on another portion of the strip material.
摘要:
A method and apparatus for forming a mechanical fastener. A preferred embodiment of the method includes moving a substrate along a web path, where the substrate includes a first major surface and a plurality of stems extending from the first major surface of the substrate and each of the stems includes a stem end, radiantly heating the stem ends to form softened ends, and thereafter deforming the softened ends into convex heads with a deformable surface. A preferred embodiment of the apparatus includes a web conveyor, where the web conveyor defines a web path, a heating source located adjacent the web conveyor and a deformable surface located down the web path from the heating source, where the deformable surface includes a durometer hardness of greater than 10 Shore OO and less than 70 Shore A.
摘要:
A mechanical fastener including a plurality of engaging stems located in unordered arrangements, which repeat on a substrate. A preferred embodiment of the invention provides a mechanical fastener with a plurality of repeating unordered arrangements, where the arrangements repeat in more than one direction. The unordered arrangements of the engaging stems allow pairs of the fasteners to interengage with themselves, or in other words, to self-mate. Additionally, the unordered arrangements of engaging stems allow the fasteners to interengage at any relative angular orientation with a relatively constant engagement force, and a relatively constant disengagement force regardless of their angular orientation. The unordered arrangements of engaging stems also allow pairs of fasteners to interengage at any relative planar position with a relatively constant engagement force and a relatively constant disengagement force regardless of their planar position.
摘要:
A strip material from which a portion may be severed to form a portion of a fastener. The strip material comprising a polymeric bonding layer; a multiplicity of flexible, resilient, generally U-shaped monofilaments, each monofilament including a central elongate bight portion embedded in the bonding layer, two stem portions extending from the opposite ends of the bight portion and projecting generally normal to an exposed major surface of the bonding layer, and enlarged heads at the ends of the stem portions opposite the bight portion, resiliently elastic material attached to the surface of the bonding layer opposite its exposed major surface, and pressure sensitive adhesive means along an attachment surface of the resiliently elastic material opposite the bonding layer for adhering the strip material to a substrate. The combination of the bonding layer, the monofilaments, the layer of resiliently elastic material and the pressure sensitive adhesive means are highly transparent when viewed from an angle at which the exposed major surface of the bonding layer can be seen after strip material is adhered to a substrate so that the color of the substrate will be fairly clearly seen through the strip material.
摘要:
A friction control article including a backing layer having a first surface with an array of at least 100 upstanding stems per square inch and a second surface. At least a portion of the upstanding stems is an elastomeric material and the stems have an aspect ratio of at least 1.25. The first surface has a static coefficient of friction when dry of at least 0.6 and a static coefficient of friction when wet within 20% of the static coefficient of friction when dry. The first surface has a peel strength and a tensile strength of substantially zero when engaged with another slip control article. The first surface has a relatively high shear strength when engaged with another slip control article. The high shear forces are due primarily to the frictional properties of the elastomeric materials, not a mechanical interlock of the stems, such as on a mechanical fastener.
摘要:
A patch is provided for repairing articles such as bicycle tire inner tubes. The patch includes a backing; and a pressure sensitive adhesive layer having an average thickness of greater than about 0.076 mm disposed on the backing. The patch has a maximum thickness of no greater than about 0.64 mm, a T-Peel strength from an organic polymeric substrate of greater than about 0.18 kN/m after 1 hour dwell time at 22.degree. C., and a static shear strength of at least about 50 minutes from stainless steel at 70.degree. C. with a 7.6 kPa load.
摘要:
There is provided an article having frictional properties that do not substantially degrade when water is present, comprising a backing layer having a first surface with an array of at least 100 flexible, upstanding stems per square inch, that occupy no greater than 24.8% of a total area of the first surface of the backing layer, molded at least partially integrally to the first surface, each stem having an aspect ratio of at least 1.25 and having at least a portion of the stem formed of an elastomeric material having a Shore hardness of less than about 90 A, wherein the first surface has a static coefficient of friction when dry of at least 0.6 and a static coefficient of friction when wet within 20% of the static coefficient of friction when dry.
摘要:
In one aspect, the invention provides a method of making a thermal interface material comprising the steps of: (a) providing a polymeric hot melt pressure sensitive adhesive having a number average molecular weight of greater than 25,000; (b) melt-blending the polymer with at least 25 weight percent of a thermally conductive filler to form a mixture; and (c) forming the mixture of hot melt pressure sensitive adhesive and thermally conductive filler as a film. In another aspect, the invention may further comprise the steps of: providing a fire retardant and/or microfiber forming material; and/or irradiating the film with gamma or electron beam (E-beam) radiation or a combination of both to form a thermal interface material.
摘要:
A stem web is disclosed that comprises a backing layer having a first surface and a second surface, and an array of 600 to 20000 upstanding stems projecting from the first surface of the backing. The stems comprise a height from 0.3 and 2.0 millimeters and a shore hardness less than 90A. In one embodiment, the stem web further comprises a reinforcing layer secured to the second surface. In one embodiment, the stem web is secured to a tool to be passed across a surface to be cleaned to capture lint and hair.
摘要:
A method of producing an adhesive article including the steps of applying release coating compound(s) to a second side of a liner backing; applying an adhesive onto a first side of said coated liner backing; crosslinking said adhesive with E-Beam radiation applied through the second side of said liner backing; and winding said article into a roll.