Provided is a PSA sheet that can be used on a metal adherend because it has anti-metal-corrosive properties and can also maintain good removability while preventing or inhibiting adherend surface contamination even when prolongedly adhered to the adherend. A PSA sheet having a PSA layer is provided. The PSA layer comprises at least 95% base polymer by weight and has a chloride ion amount of less than 300 μg per gram of pressure-sensitive adhesive layer, determined by hot water extraction.

Provided is a method for preparing a PSA composition for protecting Low-E glass plates from degradation and corrosion. A PSA composition preparation method is provided for Low-E glass plate protection. The method comprises a step of obtaining an aqueous liquid, and a step of obtaining a polymer-containing liquid comprising the aqueous liquid and a polymer. Here, the aqueous liquid satisfies at least (a) having an electrical conductivity below 300 μS/cm or (b) having a chloride ion concentration below 35 μg/mL.

Provided is a Low-E glass plate protective sheet having excellent long-term reliability. A Low-E glass plate protective sheet is provided. The protective sheet has a PSA layer. The PSA layer has a chloride ion amount of 105 μg or less per gram of PSA, determined by hot water extraction.

The present invention relates to an adhesive tape of thickness 40 to 300 μm that can be redetached without residue or destruction by stretching essentially in the plane of the bond, comprising at least one carrier of thickness 10 to 150 μm comprising at least one layer based on preferably uncrosslinked thermoplastic polyurethane that has typically been produced by means of extrusion and has a Shore A hardness of not more than 87, where the carrier has a ratio of force at 400% elongation F.sub.400% to breaking force F.sub.break of not more than 45%, and on which a pressure-sensitive adhesive layer is disposed on at least one side, and wherein the adhesive tape has a ratio of stripping force F.sub.strip to breaking force F.sub.break of less than 60%. The invention also relates to an adhesive tape of thickness 40 to 300 μm that can be redetached without residue or destruction by stretching essentially in the plane of the bond, comprising at least one carrier of thickness 10 to 150 μm comprising at least one layer based on preferably uncrosslinked polyurethane that has been produced from a dispersion and has a modulus at 100% elongation of not more than 1.8 MPa, where the carrier has a ratio of force at 400% elongation F.sub.400% to breaking force F.sub.break of not more than 30%, and on which a pressure-sensitive adhesive layer is disposed on at least one side, and wherein the adhesive tape has a ratio of stripping force F.sub.strip to breaking force F.sub.break of less than 60%. The invention also relates to a process for producing the adhesive tapes and to the use thereof for bonding of components in electronic devices.

A tape includes: a flexible backing layer having two major surfaces, wherein the backing layer has a thickness of greater than 25 micrometers; and an acrylic-based pressure sensitive adhesive layer disposed on one major surface of the backing layer, wherein the acrylic-based pressure sensitive adhesive comprises the reaction of one or more (C8-C20)alkyl acrylates with one or more reinforcing monomers having a homopolymer Tg of at least 50° C., wherein the acrylic-based pressure sensitive adhesive has a tan δ of at least 0.5 measured at 80° C. and an oscillating frequency of 1 radian/second, and wherein the acrylic-based pressure sensitive adhesive layer has a thickness of at least 5 micrometers; wherein, when disposed on an aluminum substrate, the tape displays clean removal from the aluminum substrate according to the Clean Removal Test described in the Examples Section, and a leakage distance of less than 762 micrometers according to the Chromic Acid Anodization-Leakage Distance Test described in the Examples Section. A method of anodizing an aluminum surface includes: providing a substrate having an aluminum surface; applying a tape as described herein to mask the aluminum surface and form a masked substrate; and exposing the masked substrate to an electrolyte solution including chromic acid under conditions effective to form aluminum oxide.

Disclosed are a method, a device and/or a system of cast vinyl film and, more particularly, to a method and system to provide a repositionable translucent cast vinyl film with an air-egress adhesive layer. In one aspect, a method includes mixing a solvent based polyvinyl chloride (PVC) organosol with a stabilizer and an additive to get a desired shade of pellucid tint of a translucent thermoplastic stretch wrap film. Further, the method includes casting the polyvinyl chloride (PVC) organosol onto a film carrier and moving the film carrier through a plurality of ovens at varying temperatures to cure into a solid film. The cured solid film is laminated to an air-egress liner casted with a solvent-borne acrylic pressure-sensitive adhesive to provide ease of installation. The adhesive includes an air release patterning to allow escape of air from back of the film while repositioning the film around a complex shaped surface.

Disclosed is a semiconductor device manufacturing method, including a preparation step of preparing a laminated body in which a supporting member, a temporary fixation material layer that generates heat upon absorbing light, and a semiconductor member are laminated in this order, and a separation step of irradiating the temporary fixation material layer in the laminated body with incoherent light and thereby separating the semiconductor member from the supporting member.

With present invention, as disclosed in U.S. Provisional Patent Application No. 63/350,647 filed on Jun. 9, 2022, we describe a new tempered glass for touch and non-touch screens. Unlike existing protecting films, our development offers increased flexibility, reusability, and an easier application process. The advantages described above result in the reduction of the tedious work associated with the installation of a screen protector. Thus, allowing the users of the electronic devices the opportunity to install them themselves without the help of third parties. Our newly developed film includes a protective film, a tempered glass screen protector with electroplating AF coating, an adhesive layer, and a release liner. It also includes specially made stickers to clean the surface before application and the adhesive layer of the protector for re-application. The proposed protector can also be cleaned using regular soap, water, paper, or a towel cloth to remove dust and be re-utilized.

A film-based article including a film layer having first and second major sides, an adhesive layer comprising a first surface adjacent to the second major side of the film and a second surface opposite the first surface, wherein the second surface of the adhesive layer comprises a structured surface comprising a plurality of outwardly extending protrusions, each having a base, wherein the bases of the plurality of protrusions comprise at least approximately 6 percent of a total surface area of the second surface of the adhesive layer, and an ink layer applied to the first major side of the film layer at an ink laydown of at least 100 percent.

A repositionable self-adhesive protective paper configured to protect the valuable surface during building processes is disclosed. The protective paper uses a protection material such as sturdy paper to protect the surface. The surface could be floors, walls, and countertops. The protective paper has a top surface and a bottom surface. The bottom surface is coated with an adhesive layer on at least two edges. The adhesive layer is configured to easily adhere and remain the protective paper in place. Further, the protective paper uses one or more strips of tape to secure the non-adhesive edges to the surface. After completing the building processes, the adhesive layers are removed from the protected surface without any residues or damages.