# US 2014/0154944 A1 · Adhesive tape, preferably self-adhesive tape, comprising of at least two layers a and b laminated directly on one another, with at least one or both layers a or b being an adhesive > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0154944 A1 - Document ID: US20140154944A1 - Status: Published application - Kind: A1 - Application number: 14/114,582 - Filed: 2012-05-04 - Published: 2014-06-05 - Earliest claimed: 2011-05-06 - Assignees: Tesa SE - Applicants: Tesa SE - Inventors: Arne Koops; Hermann Neuhaus-Steinmetz; Uwe Schümann; Thomas Schubert; Olga Kirpicenok; Kirstin Weiland; Dennis Perlbach; Sarah Reich - Web page: https://patentgrep.com/patent/US20140154944A1 ## CPC - C09J 7/20: characterised by their carriers - C09J 7/10: without carriers - C09J 7/38: Pressure-sensitive adhesives [PSA] - B29C 59/08: by flame treatment {; using hot gases} - B29C 59/10: by electric discharge treatment - B29C 59/14: by plasma treatment {(plasma tubes per se H01J)} - C09J 2301/302: the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C - C09J 2400/226: in the substrate - C09J 2400/228: in the pretreated surface to be joined - Y10T 428/28: Web or sheet containing structurally defined element or component and having an adhesive outermost layer - Y10T 428/2809: including irradiated or wave energy treated component - Y10T 442/674: Nonwoven fabric with a preformed polymeric film or sheet - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) - B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Adhesive tape having at least two layers A and B laminated directly on one another, with at least one or both layers A or B being an adhesive, and the interfaces of the layers A and B laminated on one another being subjected to a physical method, the physical method being selected from the group consisting of corona discharge, dielectric barrier discharge, flame pretreatment and plasma treatment, before the layers are laminated to one another, with the two methods differing from one another. ## Claims ### Claim 1 An adhesive tape, comprising at least two layers A and B laminated directly to one another, at least one or both layers A or B being an adhesive, and the interfaces of the layers A and B that are laminated to one another being subjected to a physical method, the physical method being selected from the group consisting of corona discharge, dielectric barrier discharge, flame pretreatment and plasma treatment, before the layers are laminated to one another, and the treatment applied to one of said at least two layers differing from the treatment applied to the other. ### Claim 2 (depends on 1) The adhesive tape as claimed in claim 1, wherein the interfaces laminated to one another possess an acid-base interaction or donor-acceptor interaction that is intensified or generated by the different types of physical treatments of the interfaces, one of which is treatment with an acidically modifying gas and the other being treatment with a basically modifying gas. ### Claim 3 (depends on 1) The adhesive tape as claimed in claim 1, wherein the first physical treatment is a corona treatment in air and the second physical treatment is a corona treatment in N2, the O2 content of the N2 atmosphere being <1000 ppm. ### Claim 4 (depends on 1) The adhesive tape as claimed in claim 1, wherein at least one of the layers A or B is viscoelastic. ### Claim 5 (depends on 1) The adhesive tape as claimed in claim 1, wherein the adhesive is a pressure-sensitive adhesive. ### Claim 6 (depends on 1) The adhesive tape as claimed in claim 1, wherein the layer B is a carrier substrate in the form of a film, foam, fabric, nonwoven, or paper carrier. ### Claim 7 (depends on 1) The adhesive tape as claimed in claim 1, wherein the layer B is an adhesive bonding component. ### Claim 8 (depends on 1) The adhesive tape as claimed in claim 1, wherein the physical methods differ with respect to the dose which is suitable for each of the interfaces. ### Claim 9 (depends on 1) The adhesive tape as claimed in claim 1, wherein the treatment time for the interfaces of the layers A and B is different. ### Claim 10 (depends on 1) The adhesive tape as claimed in claim 1, wherein the physical methods differ with respect to the process selected. ### Claim 11 (depends on 1) The adhesive tape as claimed in claim 1, wherein in the case of the physical methods the following pure, or mixtures of, process gases form a treatment atmosphere: N2, O2, H2, CO2, Ar, He, ammonia, ethylene, optionally with steam or other volatile constituents being added. ### Claim 12 (depends on 1) The adhesive tape of claim 1 consisting of said two layers A and B laminated directly to one another.