WO2019141787A1 - Ruban adhésif en mousse détachable - Google Patents

Ruban adhésif en mousse détachable Download PDF

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Publication number
WO2019141787A1
WO2019141787A1 PCT/EP2019/051185 EP2019051185W WO2019141787A1 WO 2019141787 A1 WO2019141787 A1 WO 2019141787A1 EP 2019051185 W EP2019051185 W EP 2019051185W WO 2019141787 A1 WO2019141787 A1 WO 2019141787A1
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WO
WIPO (PCT)
Prior art keywords
adhesive tape
sensitive adhesive
pressure
polymer foam
foam
Prior art date
Application number
PCT/EP2019/051185
Other languages
German (de)
English (en)
Inventor
Christian Buchholz
Inga Auktun
Werner Kluge-Paletta
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 WO2019141787A1 publication Critical patent/WO2019141787A1/fr

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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
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/16—Layered products comprising a layer of synthetic resin specially treated, e.g. irradiated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/245—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it being a foam layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0207—Materials belonging to B32B25/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B32B2266/0228—Aromatic vinyl resin, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B32B2266/0235—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0278—Polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/538—Roughness
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    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/54—Yield strength; Tensile strength
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    • B32B2307/72—Density
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    • B32B2307/732—Dimensional properties
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/748—Releasability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2405/00—Adhesive articles, e.g. adhesive tapes
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
    • C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
    • C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
    • 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
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
    • 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
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/20—Presence of organic materials
    • C09J2400/24—Presence of a foam
    • C09J2400/243—Presence of a foam 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
    • C09J2423/046—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
    • C09J2423/10—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
    • C09J2431/00—Presence of polyvinyl acetate
    • C09J2431/006—Presence of polyvinyl acetate 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
    • C09J2433/00—Presence of (meth)acrylic polymer
    • 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
    • C09J2467/00—Presence of polyester
    • C09J2467/006—Presence of polyester 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
    • C09J2475/00—Presence of polyurethane
    • C09J2475/006—Presence of polyurethane in the substrate

Definitions

  • the invention relates to the technical field of adhesive tapes, as they are widely used for temporary or permanent attachment of various objects and components. More specifically, the invention relates to an adhesive tape comprising a low density polyer foam. Inventive adhesive tapes are particularly suitable for mounting so-called price scanner rails in supermarkets.
  • Price scanner rails are devices that are mounted on shelves of supermarkets and similar facilities to flexibly attach price tags to them. Accordingly, they must be able to be securely and permanently affixed to different materials and be able to withstand the stresses encountered when replacing labels or goods.
  • Double-sided adhesive tapes have long been known. They usually include a carrier on which a pressure-sensitive adhesive is applied on both sides. Foamed carriers are also known from various applications.
  • WO 2004/067661 A2 describes a pressure-sensitive adhesive tape with a flat carrier material which is coated on both sides with a pressure-sensitive adhesive, wherein at least one of the pressure-sensitive adhesives is based on poly (meth) acrylic acid esters.
  • EP 2 1 16 584 A1 discloses a double-sided adhesive tape for bonding flexible printing plates, which may comprise a foamed and at least one stabilizing support, wherein at least one of the outer pressure-sensitive adhesive layers is based on poly (meth) acrylic acid ester and a resin component and is especially crosslinked.
  • WO 02/1 1985 A1 describes an adhesive tape for flexographic printing, which comprises a first adhesive layer, a substrate, and a second adhesive layer, wherein the substrate comprises a foam layer and at least one of the adhesive layers is structured.
  • the object of the invention is to combine a low-density foam with a reinforcing layer attached thereto.
  • a first and general subject of the invention is a double-sided adhesive tape comprising two outer pressure-sensitive adhesive layers, each containing at least 40% by weight of one or more poly (meth) acrylates,
  • the density of the polymer foam is 30 to 120 kg / m 3 .
  • 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 crosslinked systems, crystalline or glassy solidified polymers are usually 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.
  • G ' storage modulus
  • G " loss modulus
  • G ' is a measure of the elastic part
  • G " is a measure of the viscous part 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 subjected to a sinusoidally oscillating shear stress in a plate-and-plate arrangement.
  • 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 phase angle d.
  • a composition is especially considered as a pressure-sensitive adhesive and is in the sense of the invention particularly defined as such, if at 23 ° C in the deformation frequency range of 10 ° to 10 1 rad / sec both G 'and G "at least in part in the range of 10 third There are up to 10 7 Pa. "part” means that at least a portion of the G 'curve is within the window, the wheel through the deformation of the frequency range including 10 ° up to and including 10 1 / sec (abscissa) and the range of the G' Values of 10 3 inclusive inclusive 10 7 Pa (ordinate) is spanned, and if at least a portion of the G "curve is also within the corresponding window.
  • a “poly (meth) acrylate” is understood as meaning a polymer obtainable by free-radical polymerization of acrylic and / or methacrylic monomers and optionally further copolymerizable monomers.
  • a “poly (meth) acrylate” is understood as meaning a polymer whose monomer base consists of at least 50% by weight of acrylic acid, methacrylic acid, acrylic acid esters and / or methacrylic acid esters, acrylic esters and / or methacrylates being at least partly, preferably at least 30% by weight .-%, based on the total monomer base of the polymer concerned, are included.
  • the pressure-sensitive adhesive layers of the adhesive tape according to the invention contain poly (meth) acrylate to a total of 50 to 95 wt .-%, more preferably to a total of 60 to 93 wt .-%, each based on the total weight of the pressure-sensitive adhesive layer. It may contain one (single) poly (meth) acrylate or more poly (meth) acrylates. If the plural expression "poly (meth) acrylates" is used in this text in connection with the pressure-sensitive adhesive layers of the adhesive tape according to the invention, it is always included that the pressure-sensitive adhesive layer contains only a single poly (meth) acrylate.
  • R 1 is an H atom or a methyl group and R 2 is an alkyl radical having 1 to 20 C atoms; and ib) 1 to 20% by weight, in particular 1 to 8% by weight (based on the monomer mixture) Attributed to (meth) acrylic acid.
  • the monomers ia) are preferably selected from the group consisting of methyl acrylate, ethyl acrylate, propyl acrylate, methyl methacrylate, ethyl methacrylate, n-butyl acrylate, sec-butyl acrylate, tert-butyl acrylate, cyclopentyl methacrylate, cyclohexyl acrylate,
  • the monomers are ia) n-butyl acrylate and 2-ethylhexyl acrylate.
  • the monomer ib) is preferably acrylic acid.
  • the two outer pressure-sensitive adhesive layers of the adhesive tape of the invention are identical in their composition.
  • the poly (meth) acrylates of the pressure-sensitive adhesive layers of the adhesive tape of the invention are preferably crosslinked.
  • crosslinkers in particular those compounds are selected which are able to build up covalent, ionic or coordinative bonds.
  • the crosslinking bonds are formed without the supply of actinic radiation.
  • the poly (meth) acrylates of the pressure-sensitive adhesive mass layers are particularly preferably crosslinked with one or more crosslinkers selected from the group consisting of metal chelates, in particular aluminum and titanium chelates, multifunctional isocyanates, multifunctional amines, multifunctional alcohols or multifunctional epoxides.
  • Crosslinkers can also be present in combination with accelerators, ie with substances which increase the speed of the crosslinking reaction.
  • the pressure-sensitive adhesives prepared by the processes described can be coated to form the pressure-sensitive adhesive layers of the adhesive tape of the invention from solution or from the melt.
  • At least one of the two outer pressure-sensitive adhesive layers of the adhesive tape of the invention contains at least 20% by weight, preferably at least 25% by weight, in particular at least 30% by weight, based in each case on the total weight of the PSA layer or more adhesive resin (s). It may contain a (single) adhesive resin or more adhesive resins in the respective pressure-sensitive adhesive layer of the adhesive tape according to the invention. Both external pressure-sensitive adhesives of the adhesive tape according to the invention preferably contain at least 20% by weight, preferably at least 25% by weight, in particular at least 30% by weight, in each case based on the total weight of the pressure-sensitive adhesive layer, of one or more adhesive resins (e ).
  • the outer pressure-sensitive adhesive layers of the adhesive tape of the invention preferably each contain one or more adhesive resin (s) to a maximum of 50% by weight, more preferably to a maximum of 40% by weight, in particular to a maximum of 35% by weight, based in each case the total weight of the respective pressure-sensitive adhesive layer.
  • resins are understood as meaning those oligomeric and (low) polymeric compounds whose number-average molecular weight Mn is not more than 5,000 g / mol.
  • short-chain polymerization products which are formed in the polymerization of the above-defined monomer mixture for the preparation of the polymer component of the pressure-sensitive adhesive mass layers of the invention are not subsumed under the term "resins”.
  • Adhesive resins are characterized by the fact that they increase the bond strength of a pressure-sensitive adhesive compared to the otherwise identical pressure-sensitive adhesive not mixed with the adhesive resin.
  • the softening point of the adhesive resin is preferably at least 80 ° C., in particular at least 100 ° C.
  • the softening point is determined by ring-ball method according to DIN EN 1427: 2007 with the resin to be examined instead of bitumen, wherein at softening temperatures of above 150 ° C, the implementation 8.1 b) is applied analogously from this provision.
  • the tackifier resins are selected from the group consisting of pinene and
  • Rosin and rosin derivatives such as e.g. Rosin esters and rosin derivatives stabilized by disproportionation or hydrogenation
  • polyterpene Terpene phenol resins
  • Terpene phenol resins Alkylphenol resins and aliphatic, aromatic and aliphatic-aromatic hydrocarbon resins.
  • one of the two outer pressure-sensitive adhesive layers of the invention comprises at least 20% by weight, preferably at least 25% by weight, in particular at least 30% by weight, in each case based on the total weight of the pressure-sensitive adhesive layer, of one or more Adhesive resin (s), and the other outer PSA layer contains a total of at most 15 wt .-%, more preferably a total of at most 12 wt .-%, each based on the total weight of the pressure-sensitive adhesive layer, one or more adhesive resin (s).
  • the pressure-sensitive adhesive layer following in the sequence of polymer foam-reinforcing layer pressure-sensitive adhesive layer contains at least 20% by weight of one or more adhesive resins, ie it is the pressure-sensitive adhesive layer with the higher adhesive resin content.
  • the pressure-sensitive adhesive layers according to the invention may contain, in addition to those already mentioned, further additives which are added to express certain properties.
  • further additives include, for example, plasticizers, fillers, optionally also functional Filling materials, eg electrically or thermally conductive filling materials and flame retardants.
  • the outer pressure-sensitive adhesive layers of the adhesive tape of the invention comprise at least 95% by weight, more preferably at least 97% by weight, in particular at least 99% by weight, of the optionally crosslinked polymer or polymers and one or more several adhesive resins.
  • the coating weight of the pressure-sensitive adhesive layers of the adhesive tape according to the invention is preferably from 20 to 100 g / m 2 , more preferably from 35 to 65 g / m 2 .
  • the adhesive tape of the invention further comprises a polymer foam.
  • a polymer foam This is understood to mean a structure of gas-filled, spherical or polyhedron-shaped cells which are delimited by liquid, semi-liquid, higher-viscosity or solid cell webs and which are present in such a proportion that the density of the foam does not exceed the density of the matrix material, ie the entirety of the cell is reduced gaseous materials from which the relevant layer is constructed.
  • the matrix material of the polymer foam comprises in particular one or more polymers, preferably it consists of one or more polymers.
  • the polymers contained in the foam are referred to in their entirety as the polymer matrix of the foam.
  • the polymer matrix of the polymer foam is preferably selected from the group consisting of homo- and copolymers of ethylene, especially low and very low density polyethylenes (PE), more preferably LDPE, LLDPE and VLDPE; Ethylene-vinyl acetate copolymers (EVA); Mixtures of the polymers listed so far, in particular PE-EVA foams; polyvinyl acetates; polypropylenes; Ethylene-propylene-diene rubbers (EPDM); thermoplastic elastomers based on styrene block copolymers; Polyurethanes based on aromatic and aliphatic diisocyanates; polyvinyl chlorides; polychloroprene; Natural rubber and acrylate copolymers and mixtures of two or more of the aforementioned polymers.
  • PE low and very low density polyethylenes
  • EVA Ethylene-vinyl acetate copolymers
  • EVA Ethylene-vinyl acetate
  • the polymer matrix of the foam is selected from the group consisting of Polyethylenes, ethylene-vinyl acetate copolymers, polypropylenes and polyurethanes and mixtures of two or more of the aforementioned polymers.
  • the polymer matrix of the foam consists of a polyethylene, in particular a low density polyethylene (LDPE).
  • LDPE low density polyethylene
  • the polymers may in principle be crosslinked or uncrosslinked in the foam, preferably they are crosslinked.
  • the foaming of the polymer matrix can in principle take place in any known manner, for example with expandable microballoons, with pre-expanded microballoons or other hollow microspheres, chemically by substances which react to release gas or physically by introducing a blowing agent or propellant gas.
  • the polymer foam of the adhesive tape according to the invention is preferably foamed by introducing a propellant gas.
  • the density of the polymer foam according to the invention is 30 to 120 kg / m 3 .
  • the density of the polymer foam is preferably 35 to 100 kg / m 3 , more preferably 40 to 90 kg / m 3 , particularly preferably 50 to 85 kg / m 3 , in particular 55 to 80 kg / m 3 .
  • the thickness of the polymer foam is preferably 500 to 1500 gm, particularly preferably 800 to 1300 gm, in particular 950 to 1200 gm.
  • An inventive adhesive tape further comprises a reinforcing layer disposed between one of the outer pressure-sensitive adhesive layers and the polymer foam.
  • the thickness of the reinforcing layer is preferably 10 to 75 gm, more preferably 15 to 50 gm, in particular 18 to 30 gm.
  • the reinforcing layer is preferably a film, a scrim, a fabric or a nonwoven.
  • the reinforcing layer is particularly preferably a film, in particular a polyester film, for example a polyethylene terephthalate film. More preferably, the reinforcing layer, in particular in a design as a film, a tensile strength of more than 140 N / mm 2 and an elongation at break of more than 60%.
  • An adhesive tape according to the invention may comprise further layers in addition to the layers listed so far.
  • the adhesive tape according to the invention preferably consists of the two outer pressure-sensitive adhesive layers, each of which contains at least 40% by weight of one or more poly (meth) acrylate (s),
  • the polymeric foam and the reinforcing layer disposed between one of the outer pressure-sensitive adhesive layers and the polymer foam.
  • Layers of small thickness which merely serve to increase the bond strength, for example primer layers, are irrelevant here.
  • roughening of the polymer foam improves the PSA anchorage.
  • One way of roughening and chemically modifying the polymer structure is by wet-chemical etching of the foam material.
  • the carrier materials that is to say the polymer foam and / or the reinforcing layer-can be pretreated physically or chemically.
  • the material in question is preferably treated with flame or corona or plasma.
  • the respective material is preferably primed, reactive primers being used in a particularly preferred embodiment. Suitable primer materials are, for example, reactive primers.
  • the polymer foam is corona-treated on both sides and the reinforcing layer, in particular in the embodiment as a film, etched on both sides and / or corona-treated.
  • the total thickness of an adhesive tape according to the invention is preferably from 400 to 2000 .mu.m, more preferably from 600 to 1700 .mu.m, in particular from 750 to 1400 .mu.m, very particularly preferably from 850 to 1200 .mu.m.
  • Another object of the invention is the use of a double-sided adhesive tape according to the invention for the bonding of signage elements on shelving systems, in particular for the bonding of price scanner rails on shelving systems.
  • a double-sided adhesive tape according to the invention favors the removability of the adhesive tape according to the invention.
  • price scanner rail there is usually a break within the polymer foam, the so-called foam gaps.
  • a pressure-sensitive adhesive and a part of the foam adhere to the removed rail.
  • On the substrate (the shelf) adheres a composite of the remaining part of the foam, the film and the second pressure-sensitive adhesive.
  • this composite can be removed as a whole and without residues from the substrate, so that as a result, the tape is residue-free from the shelf base removable.
  • a 2 L glass reactor conventional for radical polymerizations was charged with 120 g of 2-ethylhexyl acrylate, 268 g of n-butyl acrylate and 12 g of acrylic acid, 150 g of acetone and 150 g of 60/95 boiling mineral spirit and mixed well. After passing nitrogen gas through with stirring for 45 minutes, the reactor was heated to 58 ° C. (internal temperature) by means of an external heating bath and 0.16 g of 2,2'-azodi (2-methylbutyronitrile) (Vazo 67) dissolved in 10 g of acetone. Subsequently, the outer heating bath was heated to 75 ° C and the reaction was carried out constantly under boiling cooling (outside temperature 75 ° C).
  • the polymer solution obtained as described above was concentrated in an extruder, mixed with 0.6 g of Polypox R16 (epoxy crosslinker) and 188 g of Dertophene T 105 (terpene phenolic resin) and melted through a die at 50 g / m 2 onto a process liner applied.
  • Polypox R16 epoxy crosslinker
  • Dertophene T 105 terpene phenolic resin
  • a polyurethane reactive primer (10 g / m 2 ) was applied to a 23 ⁇ m thick, etched polyethylene terephthalate film (PET) on one side and a foam carrier (LDPE foam with a thickness of 1000 ⁇ m and a density of 67 kg / to the surface pretreated in this way) was applied. m 3 ).
  • the two free sides of the laminate were corona treated (dose 80 Wmin / m 2 , process gas air, web speed 30 m / min, distance of the electrodes to the surface to be treated 1 mm).
  • the pressure-sensitive adhesive prepared as described above was laminated on both sides with the aid of a roller applicator, the process liner was removed.
  • the resulting adhesive tape was provided on the side of the PET film with a siliconized Glassine paper liner and rolled up and held for four weeks at 23 ° C +/- 1 ° C and 50% +/- 5% rel. Humidity stored. Peel strengths were first determined using the adhesive tape obtained as described above and other adhesive tapes listed below, followed by an application test.
  • a commercial price scanner rail on a not further pretreated shelf system (metal, powder-coated surface) was glued by the adhesive tape was first applied with the side of the PET film on the price scanner rail and the resulting composite then with the remaining side of the adhesive tape on the shelf surface, each by pressing with the hand.
  • the price scanner rail was then filled immediately, i. there were price tags, advertising prints and the like. appropriate.
  • the glued security was evaluated.
  • the bond was then left at room temperature for two weeks. Thereafter, the rail was demolished by hand from the shelving system. Thereafter, the fracture pattern was determined and the peelability evaluated by hand.
  • Density determination by means of pycnometer The measuring principle is based on the displacement of the liquid in the pycnometer. First, the empty or liquid-filled pycnometer is weighed and then the body to be measured is placed in the vessel.
  • M 2 is the mass of the pycnometer with the solid
  • the bulk density in the case of porous solids, in the present case a foam, the density based on the volume, including the pore spaces) is obtained.
  • the volume weight or the density p of the applied layer is determined by the ratio of the basis weight to the respective layer thickness: m MA [kg] kg
  • MA mass application / basis weight in [kg / m 2 ]
  • d layer thickness in [m]
  • the determination of the peel strength was carried out at a test climate of 23 ° C +/- 1 ° C temperature and 50% +/- 5% rel. Humidity.
  • the price scanner rail was glued to the shelving system so that it survived at its end. After the two weeks of storage already mentioned, the composite was pushed into a special holder which made it possible to pull the pattern upwards at an angle of 90 ° to the bond area (300 mm / min). The required force was measured with a Zwick tensile testing machine.
  • the measurement results are given in N / cm and are averaged out of three measurements.
  • the visual impression of the bonding was assessed after filling the price scanner rails. In particular, attention was paid to peeling off at the corners of the bond, as frequently occurs in the bonding of price scanner rails to shelving systems.
  • Example 1 Adhesive tape according to the invention, prepared as described above
  • Example 2 Adhesive tape made as described above but without PET film, i. the PSAs were applied to both sides of the foam carrier
  • Example 3 commercially available, double-sided foam tape tesafix® 62855; consisting of PE foam carrier and both sides applied pure acrylate adhesive
  • Example 4 Adhesive tape, prepared as described above, but density of the foam carrier was 270 kg / m 3 Table 1: Test results

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention vise à obtenir un ruban adhésif pour le collage de porte-étiquettes de prix qui exerce une force adhésive suffisante pour résister à un rechargement du rayon avec des marchandises et du porte-étiquettes avec des étiquettes et qui peut être retiré de manière simple sans laisser de résidus lors du détachement des porte-étiquettes de prix. À cet effet, un ruban adhésif double face selon l'invention comprend deux couches de masse adhésive extérieures, contenant respectivement un ou plusieurs poly(méth)acrylates à au moins 40 % en poids au total, une mousse polymère, et une couche de renforcement, disposée entre l'une des couches de masse adhésive extérieures et la mousse polymère, et est caractérisé en ce que la densité de la mousse polymère est de 30 à 120 kg/m3. L'objet de l'invention est aussi l'utilisation d'un ruban adhésif de ce type pour le collage d'éléments descriptifs sur les systèmes de rayonnage.
PCT/EP2019/051185 2018-01-19 2019-01-17 Ruban adhésif en mousse détachable WO2019141787A1 (fr)

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DE102018200877.9A DE102018200877A1 (de) 2018-01-19 2018-01-19 Wiederablösbares Schaumklebeband

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DE102021129366A1 (de) * 2021-11-11 2023-05-11 Tesa Se Klebeband zum Anbringen und Wiederablösen von Objekten von empfindlichen Substraten

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WO2001056777A1 (fr) * 2000-02-02 2001-08-09 Sylvester Michael S Ruban de mousse auto-adhesif renforce a double face
WO2002011985A1 (fr) 2000-08-08 2002-02-14 3M Innovative Properties Company Pièces pour impression flexographique à prise d'air améliorée
WO2004067661A2 (fr) 2003-01-29 2004-08-12 Tesa Ag Bandes adhesives destinees au collage de plaques de compression et procede de fabrication
EP2116584A1 (fr) 2008-05-09 2009-11-11 Tesa AG Bandes adhésives destinées au collage de plaques de pression
EP2199354A1 (fr) * 2008-12-16 2010-06-23 tesa SE Bande adhésive, notamment pour le collage de composants optoélectroniques
DE202015009135U1 (de) * 2015-10-15 2016-11-04 Tesa Se Selbstklebeartikel und dessen Verwendung zur Verklebung auf gestrichener Raufasertapete
DE102015112206A1 (de) * 2015-07-27 2017-02-02 Infiana Germany Gmbh & Co. Kg Montageklebeband und Verwendung des Montageklebebandes für die Druckindustrie

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WO2001056777A1 (fr) * 2000-02-02 2001-08-09 Sylvester Michael S Ruban de mousse auto-adhesif renforce a double face
WO2002011985A1 (fr) 2000-08-08 2002-02-14 3M Innovative Properties Company Pièces pour impression flexographique à prise d'air améliorée
WO2004067661A2 (fr) 2003-01-29 2004-08-12 Tesa Ag Bandes adhesives destinees au collage de plaques de compression et procede de fabrication
EP2116584A1 (fr) 2008-05-09 2009-11-11 Tesa AG Bandes adhésives destinées au collage de plaques de pression
EP2199354A1 (fr) * 2008-12-16 2010-06-23 tesa SE Bande adhésive, notamment pour le collage de composants optoélectroniques
DE102015112206A1 (de) * 2015-07-27 2017-02-02 Infiana Germany Gmbh & Co. Kg Montageklebeband und Verwendung des Montageklebebandes für die Druckindustrie
DE202015009135U1 (de) * 2015-10-15 2016-11-04 Tesa Se Selbstklebeartikel und dessen Verwendung zur Verklebung auf gestrichener Raufasertapete

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Publication number Priority date Publication date Assignee Title
CN112694849A (zh) * 2020-12-28 2021-04-23 苏州德佑新材料科技股份有限公司 用于电子产品摄像头的泡棉胶带及其制备方法

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