EP3568446A1 - Procédé pour coller des profilés sur des surfaces de substrat - Google Patents

Procédé pour coller des profilés sur des surfaces de substrat

Info

Publication number
EP3568446A1
EP3568446A1 EP18700400.7A EP18700400A EP3568446A1 EP 3568446 A1 EP3568446 A1 EP 3568446A1 EP 18700400 A EP18700400 A EP 18700400A EP 3568446 A1 EP3568446 A1 EP 3568446A1
Authority
EP
European Patent Office
Prior art keywords
plasma
acrylate
adhesive
meth
poly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP18700400.7A
Other languages
German (de)
English (en)
Inventor
Arne Koops
Martin Geelink
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tesa SE
Original Assignee
Tesa SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tesa SE filed Critical Tesa SE
Publication of EP3568446A1 publication Critical patent/EP3568446A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/02—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers involving pretreatment of the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4825—Pressure sensitive adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
    • B29C65/5021—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
    • B29C66/028—Non-mechanical surface pre-treatments, i.e. by flame treatment, electric discharge treatment, plasma treatment, wave energy or particle radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/52—Joining tubular articles, bars or profiled elements
    • B29C66/524—Joining profiled elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
    • C09J133/04—Homopolymers or copolymers of esters
    • C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C09J133/10—Homopolymers or copolymers of methacrylic acid esters
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/383—Natural or synthetic rubber
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/385—Acrylic polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/483—Reactive adhesives, e.g. chemically curing adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C09J2423/046—Presence of homo or copolymers of ethene in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C09J2423/048—Presence of homo or copolymers of ethene in the pretreated surface to be joined
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/106—Presence of homo or copolymers of propene in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/108—Presence of homo or copolymers of propene in the pretreated surface to be joined
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/16—Presence of ethen-propene or ethene-propene-diene copolymers
    • C09J2423/166—Presence of ethen-propene or ethene-propene-diene copolymers in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/16—Presence of ethen-propene or ethene-propene-diene copolymers
    • C09J2423/168—Presence of ethen-propene or ethene-propene-diene copolymers in the pretreated surface to be joined
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2427/00—Presence of halogenated polymer
    • C09J2427/006—Presence of halogenated polymer in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2427/00—Presence of halogenated polymer
    • C09J2427/008—Presence of halogenated polymer in the pretreated surface to be joined
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2453/00—Presence of block copolymer
    • C09J2453/006—Presence of block copolymer in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2453/00—Presence of block copolymer
    • C09J2453/008—Presence of block copolymer in the pretreated surface to be joined

Definitions

  • the invention relates to a method for bonding profiles on substrate surfaces.
  • Adhesion is usually referred to as the physical effect which brings about the cohesion of two phases brought into contact at their interface on the basis of intermolecular interactions occurring there. Adhesion thus determines the adhesion of the adhesive to the substrate surface, which can be determined as tack ("tack”) and as bond strength. [Um Um] In order to specifically influence the adhesion of an adhesive, plasticizers and / or tackifying resins ( so-called “tackifiers”) added.
  • a simple definition of adhesion may be "the interaction energy per unit area” [in mN / m], which is not measurable due to experimental constraints such as ignorance of the true contact surfaces, and often surface energy (OFE) with "polar” and "
  • This simplified model has become widely accepted in practice, often measuring the energy and its components by measuring the static contact angles of different test liquids, and assigning the surface tensions of these liquids to polar and nonpolar portions. From the observed contact angles of the droplets on the test surface, the polar and nonpolar portions of the surface energy of the test surface are determined. This can be done, for example, according to the OWKR model.
  • An industrially customary alternative method is the determination by means of test inks according to DIN ISO 8296.
  • a surface may also have small or medium polar parts of the surface energy without the surface energy being "high.”
  • a guideline may be that, as soon as the polar fraction of the OFE is greater than 3 mN / m, the surface is in the sense of this Invention is to be referred to as "polar".
  • polar This roughly corresponds to the practical lower detection limit. Basically, there are no hard limits for terms such as high and low energy.
  • the limit is set at 38 mN / m and 38 dyn / cm (at room temperature, respectively). This is a value above which, for example, the printability of a surface is usually sufficient.
  • the physical pretreatment of substrates to improve bonding strengths is common especially in liquid reactive kiefestoffen.
  • An object of the physical pretreatment can also be a cleaning of the substrate, for example of oils, or roughening to increase the effective area.
  • Activation usually implies an improvement in wettability, printability or anchoring of a coating.
  • Activation usually implies an improvement in wettability, printability or anchoring of a coating.
  • the method according to the invention is characterized in that a pressure-sensitive adhesive layer, which is specified further below, is plasma-treated on a first adhesive side and a profile surface of a profile is likewise plasma-treated and the first adhesive side and the profile surface, which are both plasma-treated, are glued to one another , Then, a second adhesive side of the pressure-sensitive adhesive layer is also plasma-treated, the plasma treatment may be the same or different from the plasma treatment of the first adhesive side and the plasma-treated second adhesive side is glued to the substrate surface.
  • a plasma treatment is described for example in EP 0 497 996 B1.
  • a double-pin electrode is selected, with a separate channel for pressurizing each pin electrode. Between the two tips of the electrodes, a corona discharge is created, which ionizes the gas stream flowing through the channels and converts it into a plasma.
  • This plasma then passes to the surface to be treated, where it in particular performs a surface oxidation, which improves the wettability of the surface.
  • the type of physical treatment is referred to here as indirect, because the treatment is not performed at the place of production of the electrical discharge.
  • the treatment of the surface takes place at or near atmospheric pressure, but the pressure in the electrical discharge space or gas channel may be increased.
  • an atmospheric pressure plasma which is an electrically activated homogeneous reactive Gas, which is not in thermal equilibrium, is at a pressure close to ambient pressure in the effective range. In general, the pressure is 0.5 bar more than the ambient pressure.
  • the electrical discharges and ionization processes in the electric field activate the gas and generate highly excited states in the gas constituents.
  • the gas used and the gas mixture are called process gas.
  • gaseous substances such as siloxane, acrylic acids or solvents or other constituents can also be added to the process gas.
  • Components of the atmospheric pressure plasma can be highly excited atomic states, highly excited molecular states, ions, electrons, unchanged constituents of the process gas.
  • the atmospheric pressure plasma is not generated in a vacuum but usually in an air environment. This means that if the process gas itself is not already air, the outflowing plasma contains at least components of the surrounding air.
  • filamentary discharge channels with accelerated electrons and ions form due to the applied high voltage.
  • the light electrons hit the surface at high speed
  • the reaction of a plasma with the surface of the substrate increases the plasma constituents directly "built-in.”
  • an excited state or an open binding site and radicals can be generated on the surface, which then continue to react secondarily, for example with atmospheric oxygen from the ambient air
  • noble gases no chemical bonding of the process gas atoms or molecules to the substrate is to be expected, where activation of the substrate takes place exclusively via secondary reactions.
  • the essential difference is that during the plasma treatment there is no direct action of discrete discharge channels on the surface.
  • the effect thus takes place homogeneously and gently above all via reactive gas constituents.
  • free electrons may be present, but not accelerated, because the treatment takes place outside the generating electric field.
  • the plasma treatment is thus less destructive and more homogeneous than a corona treatment, since no discrete discharge channels strike the surface.
  • the plasma apparatus of EP 0 497 996 B1 has quite high gas flows in the range of 36 m 3 per hour, at 40 cm electrode width per gap.
  • the high flow rates result in a short residence time of the activated components on the surface of the substrate.
  • only those components of the plasma reach the substrate, which are correspondingly durable and can be moved by a gas flow. For example, electrons can not be moved by a stream of gas, so they do not matter.
  • a disadvantage of the above-mentioned plasma treatment is the fact that the plasma impinging on the substrate surface has high temperatures of at least 120 ° C. in the most favorable case. Frequently, however, the resulting plasma has high temperatures of some 100 ° C.
  • the known plasma guns lead to a high thermal input into the substrate surface. The high temperatures may cause damage to the substrate surface, resulting in addition to the activating unwanted by-products known as LMWOM, Low Molecular Weight Oxidized Materials. This highly oxidized and water-soluble polymer scrap, which is no longer covalently bonded to the substrate, leads to a low resistance to humid climates.
  • a low temperature discharge configuration is understood to mean a configuration that generally generates low temperature plasma.
  • a process gas in an electric field which is generated for example by a piezo element, passed and thereby excited to the plasma.
  • a plasma discharge space is the space in which the plasma is excited. The plasma exits from an exit from the plasma discharge space.
  • a low-temperature plasma is understood here to mean a plasma which has a temperature when it strikes the surface of at most 70 ° C., preferably at most 60 ° C., more preferably at most 50 ° C. Due to the low temperature, the surfaces are less damaged, and in particular there are no unwanted by-products, the so-called LMWOMs (Low-Molecular-Weight-Oxidized-Materials). These LMWOMs lead to a reduction in the adhesive force of the adhesive on the substrate surface, in particular in moist, warm ambient conditions.
  • the low temperature of the plasma also has the advantage that a plasma nozzle of the plasma generator can be moved over the treatment surface at a very small distance of less than 2 mm and this distance can be maintained constant, regardless of the properties of the surface.
  • the substrate surface can thereby be activated at the same distance from the plasma nozzle as the adhesive surface, which leads to a significant acceleration of the process.
  • the distance of the plasma jet exit from the surface of the substrate had to be adapted to each material. This is done according to the prior art in that the treatment distance is increased or decreased to the material surface. However, this is associated with an increased expenditure of time and a complication of the activation process.
  • the low-temperature plasma is conveniently generated by a plasma nozzle based on a piezoelectric effect.
  • a process gas is guided past a piezoelectric material in a plasma discharge space.
  • the piezoelectric material is caused to vibrate as a primary region via two electrodes by a low-voltage AC voltage.
  • the vibrations are transmitted to the further secondary region of the piezoelectric material. Due to the opposite polarization directions of the multilayer piezoceramic electric fields are generated.
  • the resulting potential differences allow the generation of plasmas with low temperatures of at most 70 ° C, preferably 60 ° C, more preferably at most 50 ° C. Low heat generation can only occur through the mechanical work in the piezoceramic. In common plasma nozzles with This can not be achieved by arcing-like discharges since the discharge temperature is above 900 ° C. for exciting the process gas.
  • the substrate surfaces used according to the invention are LSE substrate surfaces such as Apo 1.2 or HighSolid.
  • the LSE surfaces are low-energy, that is non-polar surfaces in contrast to high-energy, that is polar surfaces.
  • adhesive adheres better to high-energy surfaces. According to the invention, however, an adhesive bond to low-energy surfaces is produced. But low-energy surfaces have the advantage that dirt, water, etc. are less liable to them. They are therefore very suitable as paints, in particular car paints.
  • the wettability of a surface is described by the surface energy.
  • a drop of water is applied to the surface, and the contact angle of the water drop is measured. Measuring methods are known according to DIN 53364 or ASTM D 2578-84.
  • Non-polar substrates are characterized in particular by a surface energy of less than 35 dyn / cm 2 .
  • Low-surface-energy materials include UV-curable coatings, powder coatings, and polyolefins such as polypropylene (PP), high-pressure polyethylene (LDPE), low-density polyethylene (HDPE), ultra-high molecular weight Polyethylene (UHMWPE) and polymers of ethylene-propylene-diene
  • a pressure-sensitive adhesive or a pressure-sensitive adhesive As is common in common usage, understood a substance which is permanently tacky and tacky at least at room temperature. It is characteristic of a pressure-sensitive adhesive that it can be applied by pressure to a substrate and adhere there, whereby the pressure to be applied and the duration of this pressure are not further defined. In general, but basically depending on the precise nature of the pressure-sensitive adhesive and the substrate, the temperature and the humidity, the application of a short-term, minimal pressure, which does not exceed a slight touch for a short moment to achieve the adhesion effect ranges in In other cases, a longer-term exposure time of higher pressure may be necessary.
  • Pressure-sensitive adhesives have special, characteristic viscoelastic properties which lead to permanent tackiness and adhesiveness. Characteristic of them is that when they are mechanically deformed, it comes both to viscous flow processes as well as to build elastic restoring forces. Both processes are in a certain ratio with regard to their respective proportions, depending on the exact composition, the structure and the degree of crosslinking of the PSA as well as on the speed and duration of the deformation and on the temperature.
  • the proportional viscous flow is necessary to achieve adhesion. Only the viscous components, often caused by macromolecules with relatively high mobility, allow good wetting and good flow onto the substrate to be bonded. A high proportion of viscous flow leads to a high pressure tack (also referred to as tack or surface tack) and thus often to a high adhesion. Strongly networked systems, crystalline or glassy solidified polymers are generally not or at least only slightly tacky due to the lack of flowable components.
  • the proportional elastic restoring forces are necessary to achieve cohesion. They are caused for example by very long-chained and strongly entangled as well as by physically or chemically crosslinked macromolecules and allow the transmission of forces acting on an adhesive bond forces. They result in an adhesive bond being able to withstand a sustained load acting on it, for example in the form of a permanent shearing load, to a sufficient extent over a relatively long period of time.
  • the variables storage modulus (G ') and loss modulus (G ") which can be determined by means of dynamic mechanical analysis (DMA) are used
  • Proportion, G is a measure of the viscous component of a substance. Both quantities depend on the deformation frequency and the temperature.
  • the sizes can be determined with the help of a rheometer.
  • the material to be examined is exposed to a sinusoidal oscillating shear stress in a plate-and-plate arrangement, for example.
  • shear stress controlled devices the deformation as a function of time and the time lag of this deformation are compared with the introduction of the shear stress measured. This time offset is referred to as the phase angle ⁇ .
  • a composition is especially considered as a pressure-sensitive adhesive and is defined as such in the sense of the invention, especially when at 23 ° C in the deformation frequency range of
  • a "poly (meth) acrylate” is understood as meaning a polymer whose monomer base contains at least 50% by weight of acrylic acid, methacrylic acid, acrylic acid esters and / or Methacrylic acid esters, wherein acrylic acid esters and / or methacrylic acid ester at least partially, preferably at least 50 wt .-%, based on the total monomer of the polymer in question, are included.
  • a "poly (meth) acrylate” is understood as meaning a polymer which can be obtained by radical polymerization of acrylic and / or methacrylic monomers and optionally further copolymerizable monomers.
  • the poly (meth) acrylate or poly (meth) acrylates to 40 to 70 wt .-%, based on the total weight of the PSA included.
  • the PSA preferably contains from 45 to 60% by weight, based on the total weight of the PSA, of at least one poly (meth) acrylate.
  • the glass transition temperature of the poly (meth) acrylates which can be used according to the invention is preferably ⁇ 0 ° C., more preferably between -20 and -50 ° C.
  • the glass transition temperature of polymers or of polymer blocks in block copolymers is determined in the context of this invention by means of dynamic scanning calorimetry (DSC).
  • DSC dynamic scanning calorimetry
  • approx. 5 mg of an untreated polymer sample are weighed into an aluminum pan (volume 25 ⁇ _) and closed with a perforated lid.
  • a DSC 204 F1 from Netzsch is used. It is worked for the purpose of inertization under nitrogen.
  • the sample is first cooled to -150 ° C, then heated at a heating rate of 10 K / min to +150 ° C and cooled again to -150 ° C.
  • the subsequent second heating curve is driven again at 10 K / min and recorded the change in heat capacity.
  • Glass transitions are recognized as steps in the thermogram. The glass transition temperature is obtained as follows (see FIG. 1):
  • the respective linearly extending area of the measurement curve before and after the stage is extended in the direction of rising (range before the stage) or falling (range after stage) temperatures.
  • a regression line 5 parallel to the ordinate is laid so that it intersects the two extension lines, so that two surfaces 3 and 4 (between the one extension line, the equalization line and the measurement curve) of the same content arise. The intersection of the thus positioned regression line with the trace gives the glass transition temperature.
  • the poly (meth) acrylates of the PSA are obtainable by at least partial incorporation of functional, preferably crosslinkable with epoxy groups monomers.
  • functional groups especially carboxylic acid, sulfonic acid or phosphonic acid groups
  • monomers having acid groups especially carboxylic acid, sulfonic acid or phosphonic acid groups
  • acid groups especially carboxylic acid, sulfonic acid or phosphonic acid groups
  • monomers having acid groups especially carboxylic acid, sulfonic acid or phosphonic acid groups
  • / or hydroxy groups and / or acid anhydride groups and / or epoxy groups and / or amine groups particular preference is given to monomers containing carboxylic acid groups.
  • the polyacrylate comprises copolymerized acrylic acid and / or methacrylic acid. All of these groups have a crosslinking ability with epoxide groups, whereby the polyacrylate is advantageously accessible to thermal crosslinking with incorporated epoxides.
  • monomers which can be used as comonomers for the poly (meth) acrylates in addition to acrylic acid and / or methacrylic acid esters having up to 30 carbon atoms per molecule, for example vinyl esters of carboxylic acids containing up to 20 carbon atoms, vinyl aromatic with up to 20 C atoms, ethylenically unsaturated nitriles, vinyl halides, vinyl ethers of alcohols containing 1 to 10 C atoms, aliphatic hydrocarbons having 2 to 8 C atoms and having one or two double bonds or mixtures of these monomers.
  • the properties of the relevant poly (meth) acrylate can be influenced in particular by varying the glass transition temperature of the polymer by different weight proportions of the individual monomers.
  • the poly (meth) acrylate (s) of the invention may preferably be recycled to the following monomer composition: a) acrylic acid esters and / or methacrylic acid esters of the following formula
  • R 1 H or CH 3 and R "is an alkyl radical having 4 to 14 C atoms, b) olefinically unsaturated monomers having functional groups of the kind already defined for reactivity with epoxy groups, c) optionally further acrylates and / or methacrylates and / or olefinically unsaturated monomers which are copolymerizable with component (a).
  • the proportions of the respective components (a), (b), and (c) are preferably selected such that the polymerization product has a glass transition temperature of ⁇ 0 ° C, more preferably between -20 and -50 ° C (DSC). It is particularly advantageous, the monomers of component (a) in a proportion of 45 to 99 wt .-%, the monomers of component (b) in a proportion of 1 to 15 wt .-% and the monomers of component (c) in a proportion of 0 to 40 wt .-% to choose (the data are based on the monomer mixture for the "base polymer", ie without addition of any additives to the finished polymer, such as resins etc).
  • the monomers of component (a) are, in particular, plasticizing and / or nonpolar monomers.
  • Preferably used as monomers (a) are acrylic and methacrylic acid esters having alkyl groups consisting of 4 to 14 C atoms, particularly preferably 4 to 9 C atoms.
  • Examples of such monomers are n-butyl acrylate, n-butyl methacrylate, n-pentyl acrylate, n-pentyl methacrylate, n-amyl acrylate, n-hexyl acrylate, n-hexyl methacrylate, n-heptyl acrylate, n-octyl acrylate, n-octyl methacrylate, n-nonyl acrylate and their branched isomers such as isobutyl acrylate, isooctyl acrylate, isooctyl methacrylate, 2-ethylhexyl acrylate or 2-ethylhexyl methacrylate.
  • the monomers of component (b) are, in particular, olefinically unsaturated monomers having functional groups, in particular having functional groups capable of undergoing reaction with epoxide groups.
  • component (b) preference is given to using monomers having functional groups which are selected from the group comprising: hydroxyl, carboxy, sulfonic or phosphonic acid groups, acid anhydrides, epoxides, amines.
  • monomers of component (b) are acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, crotonic acid, aconitic acid, dimethylacrylic acid, ⁇ -acryloyloxypropionic acid, trichloroacrylic acid, vinylacetic acid, vinylphosphonic acid, maleic anhydride, hydroxyethyl acrylate, in particular 2-hydroxyethyl acrylate, hydroxypropyl acrylate, in particular 3 Hydroxypropyl acrylate, hydroxybutyl acrylate, in particular 4-hydroxybutyl acrylate, hydroxyhexyl acrylate, in particular 6-hydroxyhexyl acrylate, hydroxyethyl methacrylate, in particular 2-hydroxyethyl methacrylate, hydroxypropyl methacrylate, in particular 3-hydroxypropyl methacrylate,
  • Hydroxyhexyl methacrylate especially 6-hydroxyhexyl methacrylate, allyl alcohol, glycidyl acrylate, glycidyl methacrylate.
  • component (c) all vinylically functionalized compounds which are copolymerizable with component (a) and / or component (b) can be used as component (c).
  • the monomers of component (c) can serve to adjust the properties of the resulting PSA.
  • Exemplary monomers of component (c) are: Methyl acrylate, ethyl acrylate, propyl acrylate, methyl methacrylate, ethyl methacrylate, benzyl acrylate, benzyl methacrylate, sec-butyl acrylate, ie / f-butyl acrylate, phenyl acrylate, phenyl methacrylate, isobornyl acrylate, isobornyl methacrylate, ie / f-butylphenyl acrylate, ie / f-butylaphenyl methacrylate, dodecyl methacrylate, isodecyl acrylate, lauryl acrylate , n-undecyl acrylate, stearyl acrylate, tridecyl acrylate, behenyl acrylate, cyclohexyl methacrylate, cyclopentyl methacrylate,
  • Ethylene glycol acrylate ethylene glycol monomethyl acrylate, methoxy polyethylene glycol methacrylate 350, methoxy polyethylene glycol methacrylate 500, propylene glycol monomethacrylate, butoxy diethylene glycol methacrylate, ethoxy triethylene glycol methacrylate, octafluoropentyl acrylate, octafluoropentyl methacrylate, 2,2,2-trifluoroethyl methacrylate, 1,1,1,3,3,3-
  • Macromonomers such as 2-polystyrene ethyl methacrylate (weight average molecular weight M w , as determined by GPC, from 4000 to 13000 g / mol), poly (methyl methacrylate) ethyl methacrylate (Mw from 2000 to 8000 g / mol).
  • Monomers of component (c) may advantageously also be chosen such that they contain functional groups which promote a subsequent radiation-chemical crosslinking (for example by electron beams, UV).
  • Suitable copolymerizable Photoinitiators are, for example, benzoin acrylate and acrylate-functionalized benzophenone derivatives.
  • Monomers which promote electron beam crosslinking are, for example, tetrahydrofurfuryl acrylate, N-he / f-butylacrylamide and allyl acrylate.
  • polyacrylates is understood in the context of the invention to be synonymous with “poly (meth) acrylates"
  • poly (meth) acrylates can be carried out by methods familiar to the person skilled in the art, in particular advantageously by conventional free-radical polymerizations or controlled free-radical polymerizations.
  • the polyacrylates can be prepared by copolymerization of the monomeric components using the usual polymerization initiators and optionally regulators, being polymerized at the usual temperatures in bulk, in emulsion, for example in water or liquid hydrocarbons, or in solution.
  • the polyacrylates by polymerization of the monomers in solvents in particular in solvents having a boiling range of 50 to 150 ° C, preferably from 60 to 120 ° C, using the usual amounts of polymerization initiators, generally at 0.01 to 5 wt .-%, in particular from 0.1 to 2 wt .-% (based on the total weight of the monomers) are prepared.
  • radical sources are peroxides, hydroperoxides and azo compounds, for example dibenzoyl peroxide, cumene hydroperoxide, cyclohexanone peroxide, di-i-butyl peroxide, cyclohexylsulfonylacetyl peroxide, diisopropyl percarbonate, ⁇ -butyl peroctoate, benzpinacol.
  • the free-radical initiator used is 2,2'-azobis (2-methylbutyronitrile) (Vazo® 67 TM from DuPont) or 2,2'-azobis (2-methylpropionitrile) (2,2-azobisisobutyronitrile; AIBN; Vazo® 64 TM from DuPont).
  • Suitable solvents for the preparation of the poly (meth) acrylates are alcohols such as methanol, ethanol, n- and iso-propanol, n- and iso-butanol, preferably isopropanol and / or isobutanol, and hydrocarbons such as toluene and in particular gasoline having a boiling range of 60 up to 120 ° C in question.
  • alcohols such as methanol, ethanol, n- and iso-propanol, n- and iso-butanol, preferably isopropanol and / or isobutanol
  • hydrocarbons such as toluene and in particular gasoline having a boiling range of 60 up to 120 ° C in question.
  • ketones such as, preferably, acetone, methyl ethyl ketone, methyl isobutyl ketone and esters, such as ethyl acetate, and mixtures of solvents of the type mentioned, with mixtures containing isopropanol, in particular in amounts of from 2 to 15% by weight, preferably from 3 to 10% by weight. , based on the solvent mixture used, are preferred.
  • a concentration takes place, and the further processing of the polyacrylates takes place essentially solvent-free.
  • the concentration of the polymer can be done in the absence of crosslinker and accelerator substances.
  • the polymers can be converted into a compounder after the concentration step.
  • concentration and the compounding can also take place in the same reactor.
  • the weight-average molecular weights M w of the polyacrylates are preferably in a range from 20,000 to 2,000,000 g / mol, very preferably in a range from 100,000 to 1,500,000 g / mol, most preferably in a range from 150,000 to 1,000,000 g / mol.
  • the data of the average molecular weight Mw and the polydispersity PD in this document refer to the determination by gel permeation chromatography.
  • suitable polymerization regulators such as thiols, halogen compounds and / or alcohols in order to set the desired average molecular weight.
  • the details of the number-average molar mass M n and the weight-average molar mass M w in this document refer to the determination by gel permeation chromatography (GPC). The determination is carried out on 100 ⁇ clear filtered sample (sample concentration 4 g / l). The eluent used is tetrahydrofuran with 0.1% by volume of trifluoroacetic acid. The measurement takes place at 25 ° C.
  • the flow rate is 1, 0 ml per minute
  • Calibration is carried out with polyacrylates against PMMA standards (polymethyl methacrylate calibration) and otherwise (resins, elastomers) against PS standards (polystyrene calibration) preferably a K value of from 30 to 90, particularly preferably from 40 to 70, measured in toluene (1% strength solution, 21 ° C.)
  • the K value according to Fikentscher is a measure of the molecular weight and the viscosity of the polymer.
  • the principle of the method is based on the capillary-viscometric determination of the relative solution viscosity. For this purpose, the test substance is dissolved in toluene by shaking for 30 minutes, so that a 1% solution is obtained.
  • the flow time is measured at 25 ° C and determined therefrom in relation to the viscosity of the pure solvent, the relative viscosity of the sample solution.
  • polydispersity PD ⁇ 4 a narrow molecular weight distribution
  • these compositions have a particularly good shear strength.
  • the lower polydispersity allows for easier melt processing, since the flow viscosity is lower compared to a more widely dispersed polyacrylate with largely similar application properties.
  • Narrowly distributed poly (meth) acrylates can be advantageously prepared by anionic polymerization or by controlled radical polymerization, the latter being particularly well suited. Also via / V-Oxyle can be produced corresponding polyacrylates. Furthermore, atom transfer radical polymerization (ATRP) can advantageously be used for the synthesis of narrowly distributed polyacrylates, preference being given to initiating monofunctional or difunctional secondary or tertiary halides and to abstraction of the halide (s) Cu, Ni, Fe -, Pd, Pt, Ru, Os, Rh, Co, Ir, Ag or Au complexes are used.
  • ATRP atom transfer radical polymerization
  • the monomers for preparing the poly (meth) acrylates preferably contain proportionally functional groups which are suitable for entering into linking reactions with epoxide groups. This advantageously allows thermal crosslinking of the polyacrylates by reaction with epoxides.
  • linking reactions are meant in particular addition and substitution reactions.
  • the epoxide group-containing substances are preferably multifunctional epoxides, ie those having at least two epoxide groups; Accordingly, it is preferable in total to an indirect linkage of the blocks carrying the functional groups.
  • the poly (meth) acrylates of the PSA are preferably crosslinked by linking reactions - especially in the sense of addition or substitution reactions - of functional groups contained in them with thermal crosslinkers. It is possible to use all thermal crosslinkers which ensure both a sufficiently long processing time, so that there is no gelling during the processing process, in particular the extrusion process, as well as a rapid post-crosslinking of the polymer to the desired degree of crosslinking at lower temperatures than Processing temperature, especially at room temperature, lead.
  • a combination of polymers containing carboxyl, amine and / or hydroxyl groups and isocyanates, in particular aliphatic or amine-deactivated trimerized isocyanates, as crosslinkers is possible.
  • Suitable isocyanates are in particular trimerized derivatives of MDI [4,4-methylene di (phenyl isocyanate)], HDI [hexamethylene diisocyanate, 1,6-hexylene diisocyanate] and / or IPDI [isophorone diisocyanate, 5-isocyanato-1-isocyanatomethyl-1, 3, 3-trimethylcyclohexane], for example the types Desmodur® N3600 and XP2410 (in each case BAYER AG: aliphatic polyisocyanates, low-viscosity HDI trimers). Also suitable is the surface-deactivated dispersion of micronized trimerized IPDI BUEJ 339®, now HF9® (BAYER AG).
  • isocyanates such as Desmodur VL 50 (polyisocyanates based on MDI, Bayer AG), Basonat F200WD (aliphatic polyisocyanate, BASF AG), Basonat HW100 (water-emulsifiable polyfunctional isocyanate based on HDI, BASF AG), Basonat HA 300 (allophanate-modified polyisocyanate on isocyanurate, HDI-based, BASF) or Bayhydur VPLS2150 / 1 (hydrophilic modified IPDI, Bayer AG).
  • Desmodur VL 50 polyisocyanates based on MDI, Bayer AG
  • Basonat F200WD aliphatic polyisocyanate, BASF AG
  • Basonat HW100 water-emulsifiable polyfunctional isocyanate based on HDI, BASF AG
  • Basonat HA 300 allophanate-modified polyisocyanate on isocyanurate, HDI-based, BASF
  • the poly (meth) acrylates of the PSA are preferably crosslinked by means of epoxide (s) or by means of one or more epoxide group-containing substance (s).
  • the epoxide group-containing substances are in particular multifunctional epoxides, ie those having at least two epoxide groups; Accordingly, there is an overall indirect linkage of the functional groups bearing blocks of poly (meth) acrylates.
  • the epoxide group-containing substances can be both aromatic and aliphatic compounds.
  • Highly suitable multifunctional epoxides are oligomers of epichlorohydrin, polyether polyhydric alcohols (especially ethylene, propylene and butylene glycols, polyglycols, thiodiglycols, glycerol, pentaerythritol, sorbitol, polyvinyl alcohol, polyallylalcohol and the like), epoxy ethers of polyhydric phenols [especially resorcinol, hydroquinone, bis - (4-hydroxyphenyl) -methane, bis (4-hydroxy-3-methylphenyl) -methane, bis (4-hydroxy-3,5-dibromophenyl) -methane, bis (4-hydroxy-3,5- difluorophenyl) methane, 1,1-bis (4-hydroxyphenyl) ethane, 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (4-hydroxy-3-methylphenyl) propane, 2 , 2-bis (4-hydroxy-3-chlor
  • Very suitable ethers are, for example, 1,4-butanediol diglycidyl ether, polyglycerol-3-glycidyl ether, cyclohexanedimethanol diglycidyl ether, glycerol triglycidyl ether, neopentylglycol diglycidyl ether, pentaerythritol tetraglycidyl ether, 1,6-hexanediol diglycidyl ether, polypropylene glycol diglycidyl ether, trimethylolpropane triglycidyl ether, pentaerythritol tetraglycidyl ether, bisphenol A diglycidyl ether and bisphenol F diglycidyl ether.
  • crosslinking system a crosslinking accelerator system
  • the crosslinker-accelerator system comprises at least one substance containing epoxide groups as crosslinker and at least one substance accelerating at a temperature below the melting temperature of the polymer to be crosslinked for crosslinking reactions by means of compounds containing epoxide groups as accelerator.
  • amines (formally as substitution products of ammonia, in the following formulas these substituents are represented by "R" and include in particular alkyl and / or aryl radicals and / or other organic radicals), particularly preferably such amines, which undergo no or only minor reactions with the building blocks of the polymers to be crosslinked.
  • both primary (NRh), secondary (NR2H) and tertiary amines (NR3) can be selected as accelerators, of course also those which have a plurality of primary and / or secondary and / or tertiary amine groups.
  • particularly preferred accelerators are tertiary amines such as triethylamine, triethylenediamine, benzyldimethylamine, dimethylamino-methylphenol, 2,4,6-tris (N, N-dimethylaminomethyl) phenol, N, N'-bis (3- (dimethylamino ) propyl) urea.
  • multifunctional amines such as diamines, triamines and / or tetramines can also be used as accelerators.
  • diethylenetriamine, triethylenetetramine, trimethylhexamethylenediamine are excellent.
  • amino alcohols are preferably used as accelerators.
  • Secondary and / or tertiary amino alcohols are particularly preferably used, wherein in the case of several amine functionalities per molecule, preferably at least one, preferably all amine functionalities are secondary and / or tertiary.
  • triethanolamine N, N-bis (2-hydroxypropyl) ethanolamine, N-methyldiethanolamine, N-ethyldiethanolamine, 2-aminocyclohexanol, bis (2-hydroxycyclohexyl) methylamine, 2- (diisopropylamino) ethanol, 2- ( Dibutylamino) ethanol, N-butyldiethanolamine, N-butylethanolamine, 2- [bis (2-hydroxyethyl) amino] -2- (hydroxymethyl) -1,3-propanediol, 1 - [bis (2-hydroxyethyl) amino] -2- propanol, triisopropanolamine, 2- (dimethylamino) ethanol, 2- (diethylamino) ethanol, 2- (2-dimethylaminoethoxy) ethanol, ⁇ , ⁇ , ⁇ '-trimethyl-N'-hydroxyethylbisaminoethyl ether,
  • the PSA further contains at least one synthetic rubber.
  • the synthetic rubber or synthetic rubbers in the PSA are present at from 15 to 50% by weight, based on the total weight of the PSA.
  • the PSA preferably contains from 20 to 40% by weight, based on the total weight of the PSA, of at least one synthetic rubber.
  • At least one synthetic rubber of the PSA is a block copolymer having a structure AB, ABA, (AB) n , (AB) n X or (ABA) n X,
  • the blocks A independently of one another for a polymer formed by polymerization of at least one vinyl aromatic
  • the blocks B independently of one another for a polymer formed by polymerization of conjugated dienes having 4 to 18 C atoms and / or isobutylene, or for a partially or fully hydrogenated derivative of such a polymer;
  • all of the synthetic rubbers of the pressure-sensitive adhesive composition are block copolymers having a structure as set forth above.
  • the PSA may thus also contain mixtures of various block copolymers having a structure as above.
  • Suitable block copolymers thus comprise one or more rubbery blocks B (soft blocks) and one or more glassy blocks A (hard blocks). More preferably, at least one synthetic rubber of the PSA is a block copolymer having a structure AB, ABA, (AB) sX or (AB) 4 X, where A, B and X are as defined above. Very particular preference is given to all synthetic rubbers of the PSA block copolymers having a structure AB, AB-A, (AB) 3X or (AB) 4 X, where A, B and X are as defined above.
  • the synthetic rubber of the pressure sensitive adhesive is a mixture of block copolymers having a structure AB, ABA, (AB) sX or (AB) 4 X, which preferably comprises at least AB diblock copolymers and / or triblock copolymers ABA.
  • Block A is generally a vitreous block having a preferred glass transition temperature (Tg, DSC) above room temperature. More preferably, the Tg of the glassy block is at least 40 ° C, especially at least 60 ° C, most preferably at least 80 ° C and most preferably at least 100 ° C.
  • the proportion of vinylaromatic blocks A in the total block copolymers is preferably from 10 to 40% by weight, particularly preferably from 20 to 33% by weight.
  • Vinylaromatics for the construction of block A preferably comprise styrene, ⁇ -methylstyrene and / or other styrene derivatives. The block A can thus be present as a homo- or copolymer. More preferably, block A is a polystyrene.
  • the vinyl aromatic block copolymer further generally has a rubbery block B or soft block having a preferred Tg of less than room temperature.
  • the Tg of the soft block is particularly preferably less than 0 ° C., in particular less than -10 ° C., for example less than -40 ° C. and very particularly preferably less than -60 ° C.
  • Preferred conjugated dienes as monomers for soft block B are, in particular, selected from the group consisting of butadiene, isoprene, ethylbutadiene, phenylbutadiene, piperylene, pentadiene, hexadiene, ethylhexadiene, dimethylbutadiene and the Farnese isomers and any desired mixtures of these monomers.
  • Block B can also be present as a homopolymer or as a copolymer.
  • the conjugated dienes are particularly preferred as monomers for the soft block B selected from butadiene and isoprene.
  • the soft block B is a polyisoprene, a polybutadiene or a partially or fully hydrogenated derivative of one of these two polymers, in particular polybutylene-butadiene; or a polymer of a mixture of butadiene and isoprene.
  • the block B is a polybutadiene.
  • the PSA moreover contains at least one tackifier which is compatible with the poly (meth) acrylate and which can also be referred to as an adhesion promoter or adhesive resin.
  • a "tackifier” is understood, according to the general expert understanding, to be an oligomeric or polymeric resin which increases the auto-adhesion (tack, inherent tack) of the PSA in comparison to the otherwise non-tackified, otherwise identical PSA.
  • a "tackifier compatible with the poly (meth) acrylate” is understood to mean a tackifier which alters the glass transition temperature of the system obtained after thorough mixing of poly (meth) acrylate and tackifier in comparison with the pure poly (meth) acrylate Only one Tg could be assigned to the blend of poly (meth) acrylate and tackifier A tackifier incompatible with the poly (meth) acrylate (s) would be added in the system obtained after thorough mixing of poly (meth) acrylate and tackifier two Tg lead, one of which the poly (meth) acrylate and the other would be attributable to the resin domains.
  • the determination of the Tg is carried out in this context calorimetrically by means of DSC (differential scanning calorimetry).
  • the poly (meth) acrylate compatible resins of the composition preferably have a DACP of less than 0 ° C, more preferably of at most -20 ° C, and / or preferably a MMAP of less than 40 ° C, more preferably of maximum 20 ° C, on.
  • DACP DACP
  • MMAP is the mixed methylcyclohexane aniline cloud point.
  • test substance (the adhesive resin sample to be tested) is weighed and mixed with 10 ml of dry aniline (CAS [62-53-3],> 99.5%, Sigma-Aldrich # 51788 or equivalent) and 5 ml_ dry methylcyclohexane (CAS [108- 87-2],> 99%, Sigma-Aldrich # 300306 or equivalent).
  • the sample glass is shaken until the test substance has completely dissolved.
  • the solution is heated to 100 ° C.
  • the sample glass with the resin solution is then introduced into a cloud point measuring device Chemotronic Cool from Novomatics and tempered there to 1 10 ° C. With a cooling rate of 1, 0 K / min is cooled.
  • the cloud point is optically detected.
  • the temperature is recorded at which the turbidity of the solution is 70%. The result is given in ° C.
  • the lower the MMAP value the higher the aromaticity of the test substance.
  • DACP is the diacetone cloud point.
  • test substance the adhesive resin sample to be investigated
  • xylene mixture of isomers, CAS [1330-20-7],> 98.5%, Sigma-Aldrich # 320579 or similar
  • the test substance is dissolved and then cooled to 80 ° C. Any escaped xylene is filled in with additional xylene, so that again 5.0 g of xylene are present.
  • diacetone alcohol (4-hydroxy-4-methyl-2-pentanone, CAS [123-42-2], 99%, Aldrich # H41544 or comparable
  • the sample glass is shaken until the test substance has completely dissolved.
  • the solution is heated to 100 ° C.
  • the sample glass with the resin solution is then introduced into a cloud point measuring device Chemotronic Cool from Novomatics and tempered there to 1 10 ° C. With a cooling rate of 1, 0 K / min is cooled.
  • the cloud point is optically detected.
  • the temperature is recorded at which the turbidity of the solution is 70%. The result is given in ° C.
  • the lower the DACP value the higher the polarity of the test substance.
  • the tackifier compatible with the poly (meth) acrylates is preferably a terpene-phenolic resin or a rosin derivative, more preferably a terpene-phenolic resin.
  • the PSA may also contain mixtures of several tackifiers.
  • rosin derivatives rosin esters are preferred.
  • the PSA preferably contains from 7 to 25% by weight, based on the total weight of the PSA, of at least one tackifier compatible with the poly (meth) acrylates.
  • the tackifier compatible with the poly (meth) acrylates is particularly preferred or tackifiers compatible with the poly (meth) acrylates are present at from 12 to 20% by weight, based on the total weight of the PSA.
  • the tackifier of the PSA compatible with the poly (meth) acrylates is / are compatible or at least partially compatible with the synthetic rubber, in particular with its soft block B.
  • compatible applies accordingly The compatibility is better when the molecular weight (s) are lower For a given polymer, it may be possible that the low molecular weight components of the resin molecular weight distribution are compatible with the polymer, the higher molecular weight but not .This is an example of partial compatibility.
  • the weight ratio of poly (meth) acrylates to synthetic rubbers in the pressure-sensitive adhesive is preferably from 1: 1 to 3: 1, in particular from 1.8: 1 to 2.2: 1.
  • the weight ratio of tackifiers which are compatible with the poly (meth) acrylates to synthetic rubbers in the pressure-sensitive adhesive is preferably not more than 2: 1, in particular not more than 1: 1. At least this weight ratio is preferably 1: 4.
  • the synthetic rubber is dispersed in the pressure-sensitive adhesive in the poly (meth) acrylate.
  • the synthetic rubber is preferably dispersed in the PSA in the poly (meth) acrylate. Accordingly, poly (meth) acrylate and synthetic rubber are preferably in each case homogeneous phases.
  • the poly (meth) acrylates and synthetic rubbers contained in the pressure-sensitive adhesive are preferably chosen so that they are not miscible to homogeneity at 23 ° C.
  • the PSA is therefore at least microscopically and preferably at least at room temperature in at least two-phase morphology before.
  • poly (meth) acrylate (s) and synthetic rubber (e) in a temperature range from 0 ° C to 50 ° C, in particular from -30 ° C to 80 ° C, not homogeneously miscible with each other, so that the PSA in these temperature ranges at least microscopically present at least two phases.
  • components are defined as "not homogeneously miscible with one another", even if the formation of at least two stable phases can be detected physically and / or chemically, at least microscopically, after intensive mixing, one phase being rich in one component and the second
  • negligible amounts of one component in the other which does not preclude the formation of multiphase, is considered to be insignificant in this regard small amounts of poly (meth) acrylate components are present in the synthetic rubber phase, provided that they are not essential amounts which influence the phase separation.
  • phase separation may in particular be realized in such a way that discrete regions ("domains") which are rich in synthetic rubber - ie essentially formed of synthetic rubber - in a continuous matrix which is rich in poly (meth) acrylate - thus substantially
  • a suitable analysis system for a phase separation is, for example, scanning electron microscopy, but phase separation can also be recognized, for example, by the fact that the different phases have two mutually independent glass transition temperatures in differential scanning calorimetry (DDK, Phase separation is present according to the invention if it can be clearly demonstrated by at least one of the analytical methods.
  • the fine structure may also have additional multiphase, where the A blocks form one phase and the B blocks form a second phase.
  • the pressure-sensitive adhesive layer used is preferably designed as an adhesive tape.
  • An adhesive tape is here understood to mean an outer shape whose one dimension, the thickness is significantly smaller than the other two dimensions, the width and length.
  • plastic strand As a profile is understood in particular a pulled as an extrusion process plastic strand.
  • various carriers such as coated metal strips or glass threads, be coated by the molten plastic.
  • PP polypropylene
  • PE polyethylene
  • ABS acrylonitrile-butadiene-styrene
  • PVVC polyvinyl chloride
  • TPV TPV
  • SEBSplusPP thermoplastic elastomers
  • the PSA is preferably foamed.
  • the foaming can be carried out by means of any chemical and / or physical methods.
  • a foamed PSA is preferably obtained by the introduction and subsequent expansion of microballoons.
  • microballoons is understood as meaning elastic hollow microspheres which are expandable in their ground state and which have a thermoplastic polymer shell These spheres are filled with low-boiling liquids or liquefied gas Hydrocarbons of lower alkanes, for example isobutane or isopentane suitable, which are included as a liquefied gas under pressure in the polymer shell.
  • the outer polymer shell By a physical action on the microballoons, for example by a heat - especially by heat or heat generated, for example, by ultrasound or microwave radiation - softened on the one hand, the outer polymer shell, at the same time, the liquid propellant located in the shell is in its gaseous state.
  • the microballoons expand irreversibly and expand in three dimensions. The expansion is completed when the internal and external pressures equalize. As the polymeric shell is preserved, this results in a closed-cell foam. If foamed by means of microballoons, then the microballoons can be fed to the formulation as a batch, paste or as uncut or blended powder. Dosing points are conceivable, for example, before or after the addition point of the poly (meth) acrylate, for example together as a powder with the synthetic rubber or as a paste at a later time.
  • microballoons there are a variety of types of microballoons available commercially, which differ essentially by their size (6 to 45 ⁇ diameter in the unexpanded state) and their start-up temperatures required for expansion (75 to 220 ° C).
  • microballoons are also available as aqueous dispersion having a solids or microballoon content of about 40 to 45% by weight, and also as polymer-bound microballoons (masterbatches), for example in ethylvinyl acetate having a microballoon concentration of about 65% by weight.
  • microballoon slurry systems are available, in which the microballoons are present with a solids content of 60 to 80 wt .-% as an aqueous dispersion.
  • microballoon dispersions the microballoon slurries and the masterbatches, like the DU types, are suitable for producing a foamed PSA.
  • a foamed PSA can also be produced with so-called pre-expanded microballoons.
  • pre-expanded microballoons are commercially available, for example under the designation Dualite ® or with the type designation DE (Dry Expanded).
  • the density of a foamed PSA is preferably from 200 to 1000 kg / m 3 , more preferably from 300 to 900 kg / m 3 , in particular from 400 to 800 kg / m 3 .
  • the polymer foam particularly preferably contains microballoons which, in the unexpanded state at 25 ° C., have a diameter of from 3 ⁇ m to 40 ⁇ m, in particular from 5 ⁇ m to 20 ⁇ m, and / or after expansion, a diameter of 10 ⁇ to 200 ⁇ , in particular from 15 ⁇ to 90 ⁇ have.
  • the polymer foam contains up to 30 wt .-% microballoons, in particular between 0.5 wt .-% and 10 wt .-%, each based on the total mass of the polymer foam.
  • “Expandable” microballoons include not yet expanded microballoons as well as partially expanded but still further expandable microballoons.
  • the proportion of microballoons in a given volume of PSA is determined by computed tomography (CT).
  • CT computed tomography
  • a high-resolution X-ray microtomograph was used.
  • the computed tomography allows a clear differentiation of gas (pores generated by the microballoons) and solid (adhesive mass matrix), which can also be graphically presented excellent.
  • the adhesive tapes are, in particular, those of the ⁇ CX ⁇ range from tesa SE, currently available, for example, under the trade name "ACX plus 7812".
  • Such adhesive tapes comprise a carrier layer, which is also referred to as a hard phase.
  • the hard phase polymer base is preferably selected from the group consisting of polyvinyl chlorides (PVC), polyethylene terephthalates (PET), polyurethanes, polyolefins, polybutylene terephthalates (PBT), polycarbonates, polymethyl methacrylates (PMMA), polyvinyl butyrals (PVB), ionomers, and mixtures of two or more the polymers listed above.
  • the polymer base of the hard phase is particularly preferably selected from the group consisting of polyvinyl chlorides, polyethylene terephthalates, polyurethanes, polyolefins and mixtures of two or more of the polymers listed above.
  • the hard phase is essentially a polymer film whose polymer base is selected from the above materials.
  • a "polymer film” is understood to mean a thin, flat, flexible, windable web whose material base is essentially formed by one or more polymer (s).
  • Polyurethanes are broadly understood to mean polymeric substances in which repeating units pass through Urethane groups -NH-CO-O- are linked together.
  • Polyolefins are understood as meaning polymers containing at least 50% of repeating units of the general structure - [- CH 2 -CR 1 R 2 -] n-, in which R 1 is a hydrogen atom and R 2 is a hydrogen atom or a linear or branched, saturated aliphatic
  • R 1 is a hydrogen atom
  • R 2 is a hydrogen atom or a linear or branched, saturated aliphatic
  • these are particularly preferably polyethylenes, in particular ultrahigh molecular weight polyethylenes (UHMWPE).
  • polymer base is understood to mean the polymer or polymers which make up the largest proportion by weight of all polymers present in the respective layer or phase.
  • the thickness of the hard phase is in particular ⁇ 150 ⁇ .
  • the thickness of the hard phase 10 to 150 ⁇ , more preferably 30 to 120 ⁇ and in particular 50 to 100 ⁇ , for example 70 to 85 ⁇ .
  • the term "thickness" is understood to mean the extent of the respective layer or phase along the z-ordinate of an imaginary coordinate system in which the plane spanned by the machine direction and the cross direction to the machine direction forms the xy plane.
  • the thickness of the hard phase is determined in accordance with DIN EN ISO 4593.
  • the thickness measurement of the hard phase is carried out in accordance with DIN EN ISO 4593.
  • Such adhesive tapes may further comprise a soft phase comprising a polymeric foam, a viscoelastic composition and / or an elastomeric composition.
  • the polymer base of the soft phase is preferably selected from polyolefins, polyacrylates, polyurethanes and mixtures of two or more of the polymers listed above.
  • the adhesive tape consists only of a soft phase.
  • polymer foam is meant a structure of gas-filled spherical or polyhedron-shaped cells delimited by liquid, semi-liquid, highly viscous or solid cell stems, and the main constituent of the cell stems is a polymer or a mixture of several polymers. is understood a material that features in addition to features of pure elasticity (returning to the initial state after external mechanical action) also features a viscous liquid, such as the appearance internal friction during deformation.
  • polymer-based pressure-sensitive adhesives are regarded as viscoelastic compositions.
  • an “elastomeric mass” is meant a material having rubbery behavior and can be repeatedly stretched at 20 ° C to at least twice its length and immediately resumes its initial dimension after cancellation of the compulsion required for the elongation.
  • the polymer base of the soft phase is particularly preferably selected from polyolefins, polyacrylates and mixtures of two or more of the polymers listed above. If polyolefins belong to the polymer base of the soft phase, these are preferably selected from polyethylenes, ethylene-vinyl acetate copolymers (EVA) and mixtures of polyethylenes and ethylene-vinyl acetate copolymers (PE / EVA blends).
  • EVA ethylene-vinyl acetate copolymers
  • PE / EVA blends ethylene-vinyl acetate copolymers
  • the polyethylenes may be different types of polyethylene, for example HDPE, LDPE, LLDPE, blends of these types of polyethylene and / or mixtures thereof.
  • the soft phase comprises a foam and in each case a pressure-sensitive adhesive layer of the inventive pressure-sensitive adhesive disposed above and below the foamed layer, wherein the polymer base of the foam consists of one or more polyolefin (s).
  • the polymer base of the foam is particularly preferably composed of one or more polyethylene (s), ethylene-vinyl acetate copolymer (s) and mixtures of one or more polyethylene (s) and / or ethylene-vinyl acetate copolymer (s).
  • the polymer base of the foam consists of one or more polyethylene (s).
  • the polyolefin-based foam itself is not or only very slightly tacky.
  • the bond with the hard phase or the substrate is therefore advantageously effected by the pressure-sensitive adhesive layers.
  • the foaming of the polyolefin-based starting material of the foam is preferably caused by added propellant gas in the sense of physical foaming and / or by a chemical foaming agent, for example by azodicarboxylic acid diamine.
  • the soft phase is a pressure-sensitive adhesive polymer foam of the PSA according to the invention.
  • Pressure-sensitive adhesive foam means that the foam itself is a pressure-sensitive adhesive and thus an order of an additional pressure-sensitive adhesive layer is not required. This is advantageous because fewer layers need to be joined together in the manufacturing process and the risk of separation phenomena and other undesirable phenomena at the layer boundaries is reduced.
  • the per se adhesive tacky polymer foam is coated on top and / or bottom side with a pressure-sensitive adhesive, wherein the polymer base of this pressure-sensitive adhesive preferably consists of polyacrylates.
  • a pressure-sensitive adhesive preferably consists of polyacrylates.
  • other or otherwise pretreated adhesive layers ie for example pressure-sensitive adhesive layers and / or heat-activatable layers based on polymers other than poly (meth) acrylates, can be laminated to the foamed layer.
  • Suitable base polymers are natural rubbers, synthetic rubbers, acrylate block copolymers,
  • Vinylaromatic block copolymers in particular styrene block copolymers, EVA, polyolefins, polyurethanes, polyvinyl ethers and silicones.
  • these layers contain no appreciable proportions of migratable constituents that are so well compatible with the material of the foamed layer that they diffuse in a significant amount in the foamed layer and change the properties there.
  • the soft phase of the adhesive tape may contain one or more fillers.
  • the filler (s) may be in one or more layers of the soft phase.
  • the soft phase preferably comprises a polymer foam, and the polymer foam contains partially or fully expanded microballoons.
  • the polymer foam of the soft phase of the adhesive tape - if it comprises a polymer foam - is preferably characterized by the substantial absence of open-cell cavities.
  • the polymer foam has a proportion of voids without their own polymer shell, ie of open-cell cavities, of not more than 2% by volume, in particular not more than 0.5% by volume.
  • the polymer foam is thus preferably a closed-cell foam.
  • the soft phase of the adhesive tape also powdered and / or granular fillers, dyes and pigments, especially abrasive and reinforcing fillers such as chalks (CaCO 3), titanium dioxides, zinc oxides and carbon blacks also in high proportions, that is from 0.1 to 50 wt .-%, based on the total mass of the soft phase.
  • abrasive and reinforcing fillers such as chalks (CaCO 3), titanium dioxides, zinc oxides and carbon blacks also in high proportions, that is from 0.1 to 50 wt .-%, based on the total mass of the soft phase.
  • flame retardant fillers such as ammonium polyphosphate; electrically conductive fillers such as Leitruß, carbon fibers and / or silver coated balls; thermally conductive materials such as boron nitride, alumina, silicon carbide; ferromagnetic additives such as iron (III) oxides; further additives for increasing the volume, such as, for example, blowing agents, glass full spheres, glass hollow spheres, carbonized microspheres, hollow phenolic microspheres, microspheres of other materials; Silicic acid, silicates, organically renewable raw materials such as wood flour, organic and / or inorganic nanoparticles, fibers; Anti-aging agents, light stabilizers, antiozonants and / or compounding agents may be included in the soft phase.
  • thermally conductive materials such as boron nitride, alumina, silicon carbide
  • ferromagnetic additives such as iron (III) oxides
  • further additives for increasing the volume such as, for example, blowing agents,
  • anti-aging agents it is possible to use both primary, eg 4-methoxyphenol or Irganox® 1076, and secondary anti-aging agents, eg Irgafos® TNPP or Irgafos® 168 from BASF, if appropriate also in combination with one another.
  • Phenothiazine (C radical scavenger) and hydroquinone methyl ether in the presence of oxygen and oxygen itself can be used as further anti-aging agents.
  • the thickness of the soft phase is preferably 200 to 1800 ⁇ , more preferably 300 to 1500 ⁇ , in particular 400 to 1000 ⁇ .
  • the thickness of the soft phase is determined according to ISO 1923.
  • the combination of hard and soft phase or also provided in the hard and / or soft phase layers to each other to the adhesive tape can be done for example by lamination, lamination or coextrusion. It is possible that hard and soft phases are directly, that is, directly, interconnected. It is likewise possible for one or more adhesion-promoting layer (s) to be arranged between hard and soft phase.
  • the tape may also contain additional layers.
  • At least one of the layers to be bonded together are several of the layers to be joined together, and most preferably all of the layers to be interconnected with corona (with air or nitrogen), plasma (air, nitrogen or other reactive gases or reactive compounds which can be used as aerosol) or flame pretreatment methods.
  • corona with air or nitrogen
  • plasma air, nitrogen or other reactive gases or reactive compounds which can be used as aerosol
  • a functional layer is preferably applied, which has, for example, release properties or UV stabilizing properties.
  • This functional layer preferably consists of a film having a thickness of ⁇ 20 ⁇ m, particularly preferably ⁇ 10 ⁇ m, in particular of ⁇ 8 ⁇ m, for example of ⁇ 5 ⁇ m or a lacquer having a thickness of ⁇ 10 ⁇ m, particularly preferably of ⁇ 6 ⁇ m , in particular of ⁇ 3 ⁇ , for example of ⁇ 1, 5 ⁇ .
  • Both the The film and the paint preferably contain a UV absorber, and / or the polymer base of the film or paint contains UV-absorbing and / or UV-repellent groups.
  • Films can be applied to the backside of the hard phase by lamination, lamination or coextrusion.
  • the film is preferably a metallized film.
  • the polymer base of the film is preferably selected from the group consisting of polyarylenes, polyvinyl chlorides (PVC), polyethylene terephthalates (PET), polyurethanes, polyolefins, polybutylene terephthalates (PBT), polycarbonates, polymethyl methacrylates (PMMA), polyvinyl butyrals (PVB), ionomers and mixtures of two or more of the polymers listed above.
  • "Main ingredient” here means "ingredient with the largest weight fraction based on the total weight of the film.”
  • all listed materials of the film preferably have a high content of UV stabilizers.
  • the adhesive tape is in a sequence directed to the substrate of a functional layer (as described above); a hard phase and a soft phase consisting of a pressure-sensitive adhesive layer of the pressure-sensitive adhesive of the invention, a polymer foam whose polymer base consists of one or more polyolefins, and a further pressure-sensitive adhesive layer of the pressure-sensitive adhesive of the invention.
  • the lower pressure-sensitive adhesive layer may be covered with a release liner, but this is not expected to be adhesive tape.
  • the adhesive tapes are preferably foamed masses, in particular of the type described above, which may additionally have one (or more) intermediate carriers.
  • Fig. 1 is a heat flow / temperature graph for determining the
  • Fig. 2 is a schematic product structure of profile, ACX plus 7812 tape and LSE
  • tesa® ACXplus 7812 is an acrylic foam adhesive tape for the bonding of exterior parts.
  • tesa® ACXplus 7812 typically has the following composition:
  • Block polystyrene content 31% by weight, Kraton Polymers
  • the fabrication experiment described below was carried out with an OPENAIR plasma rotation system (system: RD1004, FG5001) from Plasmatreat, Steinhagen / Germany.
  • the nozzle attachment used has a diameter of 10 mm and an exit angle of 5 ° (Art. PTF 2646).
  • the profiles 1 produced were cut into 150 mm test specimens and determined for their peel strength (90 ° T-Peel) on a Zwick tensile testing machine.
  • the known phenomenon is due to an over-treatment of the PP / EPDM profile surface 2.
  • the highly oxidized "polymer scrap" LMWOM produced by unfavorable parameters lies on the polymer surface and is no longer covalently bound to the bulk of the polymer matrix LMWOM is readily soluble in water and thus promotes moisture migration into the interfaces 2
  • Heat resistance can be dramatically affected by over-treatment in the combination of materials described above, and moisture / heat build-up can also raise bonds that break under adhesion to a cohesive failure.
  • the LMWOMs have a particularly strong effect on the hydrophilic test liquids, so that the measurement of the surface tension is falsified.
  • Functional groups covalently bonded to the pretreated polymer matrix are not solubilized and also give different contact angles compared to over-treated surfaces.
  • the functionalization on the profile surface 2 is identical to the functionalized LMWOMs (see FIGS. 3a, 3b). A distinction is only laboriously possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention concerne un procédé pour coller des profilés (1) sur des surfaces de substrat LSE (7), consistant à traiter au plasma, une surface de profilé (2) et une première surface de collage (3) d'une couche de substance adhésive renfermant : a) entre 40 et 70 % en poids, par rapport au poids total de la substance adhésive, d'au moins un poly(méth)acrylate ; b) entre 15 et 50 % en poids, par rapport au poids total de la substance adhésive, d'au moins un caoutchouc de synthèse, et c) au moins un agent d'adhésivité compatible avec le(s) poly(méth)acrylate(s), et à coller la surface de profilé (2) et la première surface de collage (3) l'une sur l'autre, à traiter au plasma une deuxième surface de collage (4) de la couche de substance adhésive et à coller cette deuxième surface de collage (4) traitée au plasma sur la surface de substrat LSE (7).
EP18700400.7A 2017-01-12 2018-01-08 Procédé pour coller des profilés sur des surfaces de substrat Withdrawn EP3568446A1 (fr)

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DE102017200471.1A DE102017200471A1 (de) 2017-01-12 2017-01-12 Verfahren zur Verklebung von Profilen auf Substratoberflächen
PCT/EP2018/050379 WO2018130496A1 (fr) 2017-01-12 2018-01-08 Procédé pour coller des profilés sur des surfaces de substrat

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US11479026B2 (en) * 2019-08-09 2022-10-25 The Boeing Company System and method for improving thermoset-thermoplastic interface adhesion
US11633925B2 (en) 2019-08-09 2023-04-25 The Boeing Company System and method for improving thermoset-thermoplastic interface adhesion
EP3851423A1 (fr) 2020-01-14 2021-07-21 Hilti Aktiengesellschaft Utilisation de mélanges de résine réactive à polarité prédéfinie pour ajuster la robustesse d'une composition de mortier ainsi que procédé de réglage de la robustesse d'une composition de mortier
CN114085630A (zh) * 2021-11-24 2022-02-25 苏州德佑新材料科技股份有限公司 一种涂布胶的制备方法

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EP1076081A1 (fr) * 1999-08-12 2001-02-14 3M Innovative Properties Company Ruban adhésif autocollant permettant une vitesse de déroulage élevée à faible niveau de bruit
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KR101981695B1 (ko) * 2011-05-06 2019-05-23 테사 소시에타스 유로파에아 플라즈마 처리에 의해 기재 상에서의 감압 접착제 화합물의 접착 성질을 향상시키는 방법
MX2013012755A (es) * 2011-05-06 2013-12-16 Tesa Se Metodo para incrementar el poder adhesivo de una capa adhesiva sensible a la presion que tiene una superficie superior y una superficie inferior.
DE102012220286A1 (de) * 2012-11-07 2014-05-08 Tesa Se Verfahren zur Erhöhung der adhäsiven Eigenschaften von Haftklebemassen auf Untergründen mittels Plasmabehandlung
DE102013215297A1 (de) * 2013-08-02 2015-02-05 Tesa Se Haftklebemasse
DE102014217821A1 (de) * 2014-09-05 2016-03-10 Tesa Se Verfahren zur Erhöhung der Adhäsion zwischen der ersten Oberfläche eines ersten bahnförmigen Materials und einer ersten Oberfläche eines zweiten bahnförmigen Materials
DE102016224684A1 (de) 2016-12-12 2018-06-14 Tesa Se Verfahren zur Herstellung einer Klebverbindung zwischen einer Klebmasseschicht und einer LSE-Substratoberfläche

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WO2018130496A1 (fr) 2018-07-19
CN110382646A (zh) 2019-10-25
DE102017200471A1 (de) 2018-07-12
US20210284869A1 (en) 2021-09-16

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