Abstract:
Methods of making adhesive articles providing air egress by supplying a route for the air to flow out from under the construction are described. One method includes providing a release liner comprising a moldable layer having a release surface and a back surface; applying a first pattern of a first non-adhesive material to a first portion of the release surface; applying a second pattern of a second non-adhesive material to a second portion of the release surface, wherein the second pattern partially overlaps the first pattern; embedding at least one of the first or second non-adhesive materials into the moldable layer; and transferring an adhesive layer having a front and back surface and end edges onto the release liner, wherein the front surface of the adhesive layer is adhered to the release surface of the release liner.
Abstract:
This invention relates to an adhesive article which provides air egress. Air egress is provided by supplying a route, such as areas of no initial adhesion for the air to flow out from under the construction. The invention relates to an adhesive article comprising a facestock having a front surface and a back surface, a continuous layer of adhesive having an upper surface and a lower surface wherein the upper surface of the adhesive layer is adhered to the back surface of the facestock, and a plurality of spaced-apart non-adhesive material which is in contact with the lower surface of the adhesive layer wherein the lower surface of the adhesive layer has a Sheffield roughness of at least about 10 and the adhesive article provides air egress. The invention also relates to methods of preparing the adhesive articles. These articles have usefulness as industrial graphics images, as well as decorative coverings, etc. The articles provide air egress and optionally repositionability and slideability.
Abstract:
A method of selectively applying pressure-sensitive adhesive to a nonwoven web and thereby forming a cleaning sheet having adhesive free peaks and adhesive containing valleys includes coating an adhesive transfer roll with adhesive, transferring a portion of the adhesive to raised regions of a female pattern forming roll, separating the adhesive between the adhesive transfer roll and the female pattern forming roll, and transferring the adhesive from the raised regions of the female pattern forming roll to the web. An apparatus for selectively applying pressure-sensitive adhesive to a nonwoven web and forming a cleaning sheet is also described.
Abstract:
The method of the present invention is directed to masking or protecting a substrate utilizing a protection sheet (10) having a contact surface containing a plurality of protrusions (14) spaced apart by a plurality valleys (12), and an opposing back surface containing a plurality of hollow portions corresponding to the protrusions (14). The valleys (12) of the contact surface of the protection sheet (10) are coated with a pressure sensitive adhesive (16), while the protrusions (14) provide spacing which prevents premature sticking of the protection sheet (10) onto the substrate. The invention is particularly suited for use in automotive repair applications.
Abstract:
A flame retardant article foamed substrate is described, the article comprising a polymeric foam material comprising a polymer, antimony-free fire retardant and a plurality of microspheres, the foam material having an outer surface; and an adhesive layer on the outer surface, the adhesive layer is preferably formulated without fire retardant. The polymeric foam material is selected from the group consisting of elastomers, rubbers, thermoplastic elastomers, rubber based and acrylic adhesives, polyolefin polymers, acrylate polymers and methacrylate polymers, acrylate and methacrylate copolymers, and combinations thereof. The adhesive layer may comprise a pressure sensitive adhesive, a heat-activated adhesive, or the like. Viscoelastic or elastic microfibers may be incorporated into the foam material, into the adhesive layer, or both to impart stretch release properties to the finished article.
Abstract:
A method of making a three-dimensional film structure having controllable contact properties comprises making separable surface elements on a top portion of a film structure and stretching the film structure to separate the separable surface elements, thereby obtaining a desired surface structure which delivers a certain contact property such as a pressure sensitive adhesive property. The separable surface elements are provided using a cut film surface, a stemmed film, or a layer of particles.
Abstract:
This invention relates to an adhesive article which provides air egress. Air egress is provided by supplying a route, such as areas of no initial adhesion for the air to flow out from under the construction. The invention relates to an adhesive article comprising a facestock having a front surface and a back surface, a continuous layer of adhesive having an upper surface and a lower surface wherein the upper surface of the adhesive layer is adhered to the back surface of the facestock, and a plurality of spaced-apart non-adhesive material which is in contact with the lower surface of the adhesive layer wherein the lower surface of the adhesive layer has a Sheffield roughness of at least about 10 and the adhesive article provides air egress. The invention also relates to methods of preparing the adhesive articles. These articles have usefulness as industrial graphics images, as well as decorative coverings, etc. The articles provide air egress and optionally repositionability and slideability.
Abstract:
A pressure sensitive adhesive sheet includes a transparent sheet base material, a first pressure sensitive adhesive layer, and a second pressure sensitive adhesive layer, and a pressure sensitive adhesive strength by a pressure of 1 N/cm2 or less is 0 N/25 mm. The first pressure sensitive adhesive layer includes a first silicone-based pressure sensitive adhesive and the second pressure sensitive adhesive layer has a second silicone-based pressure sensitive adhesive and a plurality of protrusions formed of a plurality of fine particles. A first sheet surface is a surface to adhere to an adherend. An average particle diameter of the fine particles is 2 μm or more and 15 μm or less and a coverage ratio of the first sheet surface with the fine particles is 10% or more and 70% or less.
Abstract:
The disclosed cleaning surface includes a reactivatable adhesive to capture and hold dirt, dust, and debris and a spacing element to allow for the cleaning surface to glide over a surface to be cleaned. The reactivatable adhesive can be washed clean, but once dry, it regains the ability to capture and hold dirt, dust, and debris, so that the cleaning surface is reusable. The disclosed cleaning surface combines the ability of using adhesive to greatly enhance the capture of dirt, dust, and debris, while also being reusable. The reactivatable adhesive is a reactivatable pressure sensitive adhesive which is a polymerized precursor comprising a monomer component which contains one or more alkyl acrylates, the alkyl groups of which have an average of 4-14 C atoms, at least 2.0 phr of hydrophobic silica, one or more polymerization initiators, one or more crosslinker compounds, and which is essentially free from polar comonomers.