WO2010009854A1 - Adhesive tape comprising a fabric support - Google Patents
Adhesive tape comprising a fabric support Download PDFInfo
- Publication number
- WO2010009854A1 WO2010009854A1 PCT/EP2009/005255 EP2009005255W WO2010009854A1 WO 2010009854 A1 WO2010009854 A1 WO 2010009854A1 EP 2009005255 W EP2009005255 W EP 2009005255W WO 2010009854 A1 WO2010009854 A1 WO 2010009854A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- adhesive
- adhesive tape
- fabric
- tape according
- styrene
- Prior art date
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Classifications
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- 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
- B32B5/06—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 characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
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- 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
- B32B5/22—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
- B32B5/26—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 also being fibrous or filamentary
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- 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
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- 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
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/042—Acrylic polymers
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- 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
- B32B2255/02—Coating on the layer surface on fibrous or filamentary layer
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- 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
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- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0246—Acrylic resin fibres
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- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
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- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
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- 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
- B32B2307/40—Properties of the layers or laminate having particular optical properties
- B32B2307/402—Coloured
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- 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
- B32B2307/70—Other properties
- B32B2307/71—Resistive to light or to UV
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- 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
- B32B2307/70—Other properties
- B32B2307/712—Weather resistant
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- 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
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- 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
- C09J2400/26—Presence of textile or fabric
- C09J2400/263—Presence of textile or fabric in the substrate
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- 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
- C09J2433/00—Presence of (meth)acrylic polymer
- C09J2433/006—Presence of (meth)acrylic 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
- C09J2453/00—Presence of block copolymer
-
- 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
Definitions
- the invention relates to an adhesive tape with a carrier made of a fabric.
- Fabric adhesive tapes consisting of a woven textile as a carrier material and a one-side applied layer of a self-adhesive, belong to one of the oldest types of self-adhesive systems as roll goods. Initially used in the medical field, in the second half of the last century they partly replaced soft PVC insulating tapes with the taping of cable harnesses in automobiles. Because of the extraordinary property combination of flexibility and conformability, high mechanical strength and simultaneous cross-tearability by hand, the range of applications has been greatly expanded. Tissue tapes can be used for bandaging, repairing, covering, fixing, marking etc. and can be cut to size by hand without scissors, knives or other aids. They are therefore universal tapes (so-called "multi-purpose tapes” or "general purpose tapes”), which are used on a variety of substrates, whether polar or non-polar, rough or smooth, and are used for almost all imaginable applications.
- the adhesive is almost exclusively made from natural or synthetic rubber formulations.
- natural rubber as the main constituent of the first industrially available self-adhesive compositions
- the carrier materials used are dense woven textiles made of preferably (modified) natural fibers such as cotton, viscose rayon, viscose, etc.
- fabric adhesive tapes made of uncoated fabric, as raw fabric or dyed in the yarn, only one side coated with adhesive produced. Due to the open fabric structure, however, the rubber adhesive on the reverse side is easily attackable: oxygen, aggressive substances such as solvents etc. have almost unhindered access.
- More Asian origin are fabric adhesive tapes with a lighter, open, net-like fabric of 40 to 100 mesh on which a 50 to 200 micron thick PE film is extruded. Fabric and film usually form a stable, load-bearing composite. Because of their positioning in terms of price and characteristics, they are also referred to as "midgrades.” As an example, tesa® 4688 can be considered here.
- duct tapes • Originating from North America, the so-called "duct tapes” have spread globally using very open fabrics, scrims or knits of 25 to 40 mesh with a basis weight of 15 to 40 g / m 2
- the durability of the film and textile carrier composite is determined solely by the adhesive strength and aging stability of the adhesive.
- This type of fabric tape is the lowest category in terms of price and is usually used in the color silver
- An example of the large number of commercial duct tapes is tesa® 4662.
- Such adhesive tapes generally have a total thickness of 200 to 400 .mu.m, wherein the adhesive layer contributes about 50 to 250 microns, and are structurally designed in principle for indoor applications.
- Rubber adhesives with reactive double bonds in the elastomers are destroyed by UV light and ozone and lose their original adhesive properties.
- a high quality but expensive fabric adhesive tape having a dense 200 to 250 mesh viscose acetate fabric is described in US 3,853,598 A1.
- the fabric is provided with a polyacrylate primer layer to which an adhesive of synthetic and natural rubber is applied. Due to the very high mesh count fabric and the polyacrylate primer fabric finish, the tape has good and very easy hand tearability. However, there are no indications of outdoor suitability.
- the selected adhesive and in particular the upper side unprotected fabric based on modified natural fibers speak against it. Explicit only medical, that is called indoor applications.
- a technical adhesive tape in particular for the construction sector, is described in EP 1 548 080 A1.
- a weather-stable adhesive is used with a UV-crosslinked acrylate adhesive on a band-shaped carrier, but the Selecting substrates with papers, films, fabrics or nonwovens made of PE, PP or PET does not reveal any orientation towards outdoor applications.
- UV-crosslinkable acrylate adhesives there is the latent risk that, under the influence of sunlight, an incomplete crosslinking set during production continues to run, and thus the adhesive properties change negatively during the period of use.
- EP 1 736 582 A1 describes a polyester high-density multifilament fabric having excellent water resistance for umbrella coverings and the like. With a basis weight of at most 45 g / m 2 , such a carrier for a universal adhesive tape is far too thin and would not meet the customer expectations for a universal fabric adhesive tape in terms of feel and appearance. Notes on tape applications are missing.
- non-woven fabrics are also used instead of fabrics.
- weathering resistances and even good hand tearability can be achieved using PET fibers or filaments (see, for example, EP 0 389 212 A1 or EP 0 410 674 A1), but because of the low mechanical strengths, such systems are not an option for Universal
- improvements can still be achieved by the incorporation of filaments or loops as in EP 1 124 680 A1, the production is complex and costly, without the carrier comes close to the estimated, characteristic properties of tissue.
- PE-coated fabric tapes such as in US 4,705,715 A1, US Pat. No. 4,654,254 A1, WO 2006/107054 A1, JP 2003 253 543 A1, EP 0 848 048 A1 or described in DE 602 17 908 T vary in product composition, but generally have in terms of habit, the mechanical strength and the UV stability of the PE films and the adhesives used clear deficits compared to the desired weather-resistant universal fabric tape.
- a technical adhesive tape with the focus on the use as a cable winding tape for automobiles is described in DE 20 2004 019 761 U.
- a plastic layer of polyurethane, in particular thermoplastic polyurethane (TPU), applied and coated with a standard in this field standard adhesive On a textile support such as fleece, fabric or suede, a plastic layer of polyurethane, in particular thermoplastic polyurethane (TPU), applied and coated with a standard in this field standard adhesive.
- TPU thermoplastic polyurethane
- the production is expensive and problematic for universal tapes, but also on cable taping tailor-made properties can be a use as General Purpose adhesive tape in the outdoor area not advisable.
- the product structure according to the invention gives no UV resistance and - explicitly described in Example 1 (fabric tape) - insufficient hand tearability. The latter is not surprising to those skilled in such PU coatings. With an elongation at break of 30 to 40% in Example 1 described, the carrier made of fabric and PU layer is so soft and elastic that overstretching of the adhesive tape rather than tearing and straight-line tearing is achieved during normal hand tearing.
- EP 1 074 595 A1 describes a polyester fabric tape which is hand-tearable by the selection of special yarns and defined fabric construction (maximum 2500 dtex / cm as the titer of the longitudinal yarns per unit length) as well as by fixing the warp yarns as necessary by the adhesive coating , Thus, special conditions must be met in order to achieve at least a tear strength of less than 10 N in the transverse direction.
- the description of the yarn and fabric parameters is noticeably less than 100 g / m 2 , which is not surprisingly inherently less strong by reducing the weight per unit area, but only in the following by the adhesive layer, the the warp threads must be fixed in place, hand tearable.
- a tear propagation resistance of below 10 N is erroneously linked to the property of hand tearability.
- the force for the initial tearing of the carrier is of great importance for easy hand tearability, but this is significantly influenced by further parameters such as the tensile-elongation behavior of the wearer, the cutting technology and good used, etc. on which no information can be found in the disclosure.
- DE 10 2005 044 942 A1 describes a transversely tearable adhesive tape with an uncoated textile fabric carrier based on polyester or polyamide, wherein the reduction of the fiber strength and thus the hand tearability by targeted damage to the yarn (in the case of PET with alkalis, in the case of polyamide with acids) he follows.
- slip solid chemicals such as silicates
- the hand tearability is to be further improved.
- the alkalization of PET fabric for example, is accompanied by a marked loss of strength, which is negatively affected by aging, thermal stress, bending and / or tensile loads, and with an increase in gas and vapor permeability.
- a change in the corresponding measured values of a maximum of 50% is used, for example for the maximum tensile strength and elongation at break in the longitudinal direction and the bond strength on steel according to AFERA 5001.
- Also significant changes in the appearance such as visible destruction or tears, Ver- or discoloration, detachment of the substrates are to be avoided.
- the invention relates to an adhesive tape with a support made of 80 to 250 mesh PET fabric with a grammage of 50 to 150 g / m 2 , on top of which a plastic coating, preferably an aqueous acrylate paste with an application weight of 15 to 75 g / m 2 is applied and on the underside of which the plastic coating equipped side opposite, a UV-stabilized self-adhesive is applied with 70 to 200 g / m 2 , wherein the adhesive tape preferably has a thickness of at least 150 microns.
- adheresive tape encompasses all planar structures such as two-dimensionally extended bands and two-dimensional bands limited width, band sections and the like, ultimately punched or labels.
- the colored plastic surface finish makes the tape look high quality.
- the universal fabric tape according to the invention suitable for long-term outdoor applications is characterized by the following structure and manufacture, the description being considered as an example and can be used by a person skilled in modified form without thereby abandoning the scope of this application.
- the tissue carrier is particularly advantageous if the coloring coating is applied in two lines in succession with two different formulations.
- the main portion is applied as a coloring base coat with 10 to 60 g / m 2 directly on the fabric.
- an acrylate binder having a glass transition point of 0 ° C. and less, a soft and elastic coating is obtained which has a positive effect on the flexibility and the grip of the wearer and promotes a cuddly adhesive bonding of the tissue adhesive tape.
- These sometimes slightly blocking (pressure-sticking) paint coats are applied in a second line 5 to 20 g / m 2 of a hard, resistant top coat.
- the so-called topcoat is preferably selected from acrylate dispersions in which hardening comonomers such as, for example, styrene, methacrylate, acrylonitrile have been copolymerized.
- hardening comonomers such as, for example, styrene, methacrylate, acrylonitrile have been copolymerized.
- plastic films such as vinyl acetates, etc., which can be applied from dispersion or organosol, can be used as a topcoat.
- the support according to the invention as a composite system of a PET fabric and more preferably acrylate coating not only has very good resistance to a variety of stresses, as they occur in connection with outdoor applications, but also compared to the raw fabric improved handling: easy penetration and tearability in the transverse direction without use of cutting tools as well as flexibility for contour-adapted bonding.
- This composite carrier With this composite carrier, a premium-grade tissue adhesive tape is obtained. The result is a high-quality appearance compared to the duct tapes and midgrades. Both the (acrylate) plastic coating and the higher mesh count of the fabric delimits the fabric tape according to the invention against the PE tapes coated with Duct Tapes and Midgrades.
- 70 to 200 g / m 2 , in particular 80 to 150 g / m 2 , of a UV- and moisture-resistant self-adhesive are applied to the opposite side as adhesive layer in order to ensure secure bonding in interior and exterior applications on smooth, structured and rough substrates ,
- Modified acrylate adhesives and completely or partially hydrogenated styrene-butadiene-styrene block copolymer systems (SBC) or styrene-1-styrene block copolymer systems, in particular formulations with partially hydrogenated styrene-butadiene / butylene-styrene (SBBS) as the elastomer component are particularly advantageous as adhesives.
- tissue adhesive tapes are obtained which adhere well and securely to the different adhesive substrates.
- a bond strength in the fresh state maximum one week after production
- a bond strength in the fresh state of 3.5 N / cm minimum
- polyethylene as non-polar substrate
- a bond strength in the fresh state of at least 2 N / cm is reached, as required at least 50% over six months.
- the adhesive tape can be removed without residue or with minimal residues without destroying the carrier after up to six months of use.
- Such universal fabric tapes according to the invention can be easily cut to length in the transverse direction with a straight tear edge without fraying by hand.
- the fabric tape In the machine direction, however, the fabric tape has high strengths and can thus be used for many bandaging and fixing applications where tensile strength is important. Usually a slightly higher initial force is required for tearing the edge, wherein the further tearing can then be done easily and evenly. This slightly increased tearing strength advantageously protects the fabric tape against accidental tearing during handling and in the final application.
- the universal tissue adhesive tape according to the invention proves to be extremely stable and suitable for long-term use of at least six months. While, in particular, the duct tapes break down into their constituents after a few weeks on direct exposure to sunlight and rain, the functionality and product integrity of the fabric tape according to the invention remain the same:
- such an adhesive tape When using a carrier material according to the invention, such an adhesive tape has a high-quality appearance.
- a dense fabric structure as with apparel fabrics, instead of open, thinned, net-like structures as in the Duct Tapes, combines with a high-quality plastic surface that is significantly different from the "cheap" PE film surfaces of the Midgrades and Duct Tapes combined with a surprisingly positive combination high tensile strength / hand and tearability and weather resistance to both UV, sunlight and moisture.
- Suitable adhesives include: polyacrylates and systems based on rubbers without unsaturated double bonds, but also known rubber adhesives with correspondingly improved UV stabilization.
- PET fabric tapes have been used since the nineties, whereby in addition to the resistance to rot and higher endurance and peak temperature resistance, the high mechanical strengths (for example tensile, but also anti-abrasion) were decisive.
- PET fabric tapes such as tesa®51006 or 51026 are not hand tearable, but must be cut to length with knives, scissors, dispensers, etc.
- hand-tearable PET fabric adhesive tapes were introduced a decade ago, with a marked reduction in basis weight to 70 g / m 2 and less and additional processing such as quenching (friction calendering) to lower the strength - such fabrics
- quenching frequency calendering
- they are very thin and are perceived by the users rather than foil-like than as tissue, so that a suitability for the high-quality universal tissue adhesive tapes is eliminated. The suitability in outdoor applications is not ensured.
- PET fabrics in the desired grammage range of 50 to 150 g / m 2 , in particular 70 to 130 g / m 2 , at thicknesses of less than 100 to 250 microns to produce with satisfactory hand and tear properties.
- the strengths are purposefully reduced so that a balanced ratio of the remaining maximum tensile force in the warp direction and the tearability can be adjusted.
- the fabric may be constructed so that the warp that must be severed in the later fabric when transversely torn is selected so that the individual warp yarns allow this without undue effort: either the yarn cross section is reduced so that tearing is possible without problems is, or through the choice of material for the chain acceptable cut-through behavior is set.
- MD machine direction
- the number of threads per unit length should be selected to achieve the desired maximum MD of at least 40 N / cm and a maximum of 100 N / cm.
- a maximum tensile strength MD 60 to 80 N / cm is to be aimed for.
- PET yarn of 75 denier or finer denier is suitable for the warp, but also brittle materials which result in breakage of the warp when the energy is impulsively introduced during tearing: PET fibers with suitable comonomers or crystallization or else warp yarn based on PA6 .6.
- PET fibers with suitable comonomers or crystallization or else warp yarn based on PA6 .6 In order to obtain in such chains a tissue with the desired feel and appearance, the weft threads must be correspondingly thicker and heavier.
- the basis weight increases in the range of 70 g / m 2 and more, on the other hand, the desired thicknesses for the fabric achieved from 100 to 250 microns;
- the fabric also has a high-quality finish, despite the thin warp threads, because the thicker weft threads determine the look.
- PET shotgames starting at 150 are possible, but a 300 denier is particularly advantageous in terms of look and feel
- PET as a material for the yarn.
- a further possibility of producing a base fabric according to the invention with an acceptable transverse and tearability in the transverse direction is, in particular for the warp, to use yarns of a fiber mixture, wherein at least one of these types of fibers is soluble and thus subsequently removable.
- a yarn with sufficient strength for the spinning and weaving process would be present, and thinning and weakening would occur only in a subsequent process step, resulting in the desired transverse tearability to the fabric.
- fiber blends a variety of combinations are conceivable, with the use of resistant polymers as a permanent warp yarn such as PET fibers in combination with water-soluble or chemically or enzymatically degradable materials such as polyvinyl alcohol, polylactates and the like.
- the mixing proportions should be selected so that the final strength of the (warp) yarn is within the target range.
- textile layers can be applied to the fabric carrier, wherein all layers and the fabric are sewn in particular by threads running parallel to one another.
- the other textile layers may consist of fabrics which are similar to those used according to the invention, but they may be formed from other fabrics or nonwovens.
- the color coating according to the invention markedly improves the hand tearability of the raw tissue with suitable formulations, so that related claims on the tissue itself can be reduced.
- this coating penetrates into the tissue at least with half the thickness of the fabric due to the three-dimensionally structured surface. After drying or hardening of the plastic layer, the warp and weft threads are geometrically fixed, similar to what EP 1 074 595 A1 urges for the warp threads through the adhesive coating.
- plastic coatings In principle, a variety of systems are possible for the plastic coatings: organosols, radiation-crosslinkable prepolymer systems, non-adhesive hotmelts, polymer solutions, etc.
- aqueous dispersions are preferred and established for reasons of cost, availability and existing standard application technologies in the textile sector.
- polyurethanes for example, polyurethanes, (ethylene) vinyl acetate, PVC, styrene-butadiene or acrylate systems can be selected.
- acrylates are to be preferred. These are thickened depending on the existing coating technology and dispersed with appropriate color pastes / pigments to produce the colorant one-sided coating.
- the glass transition temperature for the binder in the color paste should be below room temperature, in particular in the range of 0 C C or lower.
- a hard, chemically resistant topcoat is favorable.
- Such a topcoat not only protects the layers underneath but, if properly selected, also acts as a barrier layer against the adhesive, which in the subsequent adhesive tape roll is in direct contact with the topcoat Interactions such as migration of components of the adhesive into the plastic coating or vice versa are undesirable because they lead to changes in the respective properties and in extreme cases, the defined interface between the adhesive and plastic surface is dissolved. The consequence of this would be a strong mounting of the adhesive and thus high unwinding forces.
- Topcoats in particular acrylate-based, having a glass transition temperature above room temperature, in particular from 30 to 50 0 C and above, are suitable, as well as chemically or thermally crosslinking systems, if the final film properties are in the same range.
- the topcoat must not be too hard, so that no cracks occur during bonding around tight radii due to bending or bending in the topcoat, thus damaging the closed lacquer layer.
- the coloring plastic coating is at 15 to 75 g / m 2 , in particular 20 to 50 g / m 2 , to apply overall, in order to achieve a good color, closed layer and a uniform surface structure.
- it has proved favorable to apply the base coat pigmented with 70 to 95% of the total amount as a coloring layer and the topcoat with 5 to 30% as unpigmented , transparent topcoat.
- care must be taken that on the one hand the adhesion of the base coat to the raw fabric is high and, on the other hand, the bond between the base coat and the topcoat so that the subsequent adhesive tape does not tearing or peeling off the coloring plastic layer, for example during unrolling from the role.
- topcoat and the adhesive can be dispensed with an additional release coating.
- one or more release additives may be added to the topcoat or else a separate release coating / printing may be selected.
- a unwinding force at take-off speeds of 0.3 m / min
- additional anti-adhesive components can normally be dispensed with.
- the adhesive coating is in principle a series of adhesive systems in question. In addition to good adhesion and adhesive properties on a wide range of different substrates, the adhesive must provide sufficient stability against UV radiation, sunlight, oxygen, moisture, etc., ie, requirements that occur in outdoor applications.
- Adhesives based on silicones such as polyisobutylene, bitumen, polyurethanes, polyvinyl acetates and acrylates can be used, but also established natural and synthetic rubber adhesives, if in particular the sensitivity of the elastomers in the double bonds is eliminated by appropriate light and aging inhibitors.
- acrylates and stabilized natural and synthetic rubber systems are used. Since the adhesive layer is protected by the carrier material against moisture, UV radiation, etc., and only a small part, especially at the edge of the adhesive tape, is even directly attacked, the requirements for the adhesive are lower than, for example, with adhesive tapes with open fabrics or UV permeable films as a carrier material.
- Acrylic adhesives are stable to UV radiation per se, stick very well to polar substrates, but have weaknesses on non-polar substrates. These deficiencies can be at least partially compensated for by admixing with the pure acrylates suitable resins or additives which improve the flow and adhesion to non-polar substrates such as polyethylene or polypropylene.
- Acrylate adhesives can be applied both from solution, as a hotmelt, as a prepolymer or as a dispersion. In the case of dispersions, due to the moisture contact in outdoor applications, sufficient water resistance of the adhesive must be ensured. While dispersions used to have pronounced moisture sensitivities because of the emulsifiers, modern acrylate dispersions are significantly improved and suitable for such applications.
- UV-crosslinkable acrylates When using radiation-crosslinkable, in particular UV-crosslinkable acrylates, it must be ensured that the degree of crosslinking remains stable and can not change significantly in outdoor use. Crosslinking under the influence of solar radiation could alter adhesive properties, such as reducing the bond strength, so that applications may not be safely operated over longer periods of time.
- rubber adhesives are predominantly used for universal woven tapes since they show a good combination of adhesive strength, tack and cohesion and a balanced adhesive behavior on virtually all relevant adhesive substrates and are therefore predestined for this purpose.
- elastomers composed of butadiene or isoprene units are very sensitive to UV light, ozone, etc. as well as thermally induced oxidation.
- the scaffold polymer is attacked at the double bonds and partially crosslinked, but also degraded, which can lead to massive changes in adhesive properties: softening of the adhesive to honey-like flow or laking by three-dimensional networking, that is, complete loss of self-adhesive properties.
- Rubber adhesives can be found, inter alia, in standard works for adhesive tapes, such as Donatas Satas'"Handbook of Pressure Sensitive Adhesive Technology.” Even though natural rubber adhesives, which are standard for conventional universal tapes (Duct Tapes, Midgrades, Premium Tapes), However, because of UV protecting additives such as carbon black, titanium dioxide, light stabilizers such as HALS (Hindered Amine Light Stabilizer) and the like, the variety of double bonds in the backbone remains a weak point, so that such high-demand systems are not the first Represent choice.
- UV protecting additives such as carbon black, titanium dioxide, light stabilizers such as HALS (Hindered Amine Light Stabilizer) and the like.
- both 1, 2 and 1, 4-linked dienes are incorporated in the diene block.
- the proportion of 1,2-dienes can be controlled by the process control. Since the 1, 2-linked dienes contain a terminal double bond, while the double bond is in the 1, 4-linked dienes in the main chain, a selective hydrogenation of the terminal and thus more reactive double bonds is possible.
- the adhesive preferably consists of
- At least one block copolymer P2 having one or more terminal blocks consisting of vinylaromatic compounds and at least one block consisting of conjugated dienes in which at least 95% of the double bonds are hydrogenated.
- the block copolymers have a Polyvinylaromatenanteil of 10 wt .-% to 35 wt .-%.
- the proportion of the two vinylaromatic block copolymers in total based on the total adhesive is 20 to 70 wt .-%, preferably 30 to 60 wt .-%, most preferably 35 to 55 wt .-%.
- the dienes are incorporated in the diene block both 1, 2 and 1, 4-linked.
- the proportion of 1,2-linked dienes can be controlled by the solvent, the temperature or the catalyst. Since the 1, 2-linked dienes contain a terminal double bond, while the double bond is located in the 1, 4-linked dienes in the main chain, a selective hydrogenation of the terminal and thus more reactive double bonds is possible.
- the block copolymers used are polymers comprising blocks of vinylaromatic (A) blocks such as styrene and others formed by polymerization of 1,3-dienes (B blocks) such as butadiene and isoprene or a mixture from both.
- the B blocks are polymerized so that they have a high proportion of vinyl groups by a 1,2-linkage of more than 20%, which are hydrogenated in contrast to the double bonds in the main chain.
- the non-hydrogenated block copolymer is an SBS
- SBBS styrene-butadiene / butylene-styrene
- block copolymers may be used whose vinylic double bonds, formed by 1, 2-linkage, are hydrogenated to more than 80%, while the double bonds in the main chain are hydrogenated to a maximum of only 30%.
- the second component used are block copolymers which on the one hand comprise blocks of vinylaromatics (A blocks) such as, for example, styrene and on the other those formed by polymerization of 1,3-dienes (B blocks) such as butadiene and isoprene or a mixture from both, with the entire double bonds of the B blocks are hydrogenated to a proportion of over 95%.
- a blocks such as, for example, styrene
- B blocks 1,3-dienes
- B blocks such as butadiene and isoprene or a mixture from both
- the block copolymers may have linear ABA structure. It is also possible to use block copolymers of radial form as well as star-shaped and linear multiblock copolymers. As a further component AB two-block copolymers can be used. Instead of the preferred polystyrene blocks and polymer blocks based on other aromatics-containing homopolymers and copolymers (preferably Ce to C 12 aromatics) with glass transition temperatures of greater than about 75 0 C are used, such as ⁇ -methylstyrene-containing aromatic blocks.
- the two elastomers, partially hydrogenated P1 and at least 95% hydrogenated P2, according to the invention are present in a ratio (weight proportions) of 25:75 to a ratio of 90:10, preferably in the range of 40:60 and 80: 20th
- Adhesive resins which are compatible with the elastomer block of the vinylaromatic block copolymers serve as tackifiers.
- Suitable tackifier resins include, inter alia, preferably nonhydrogenated, partially or fully hydrogenated resins based on rosin or rosin derivatives, hydrogenated polymers of dicyclopentadiene, non-hydrogenated, partially, selectively or completely hydrogenated hydrocarbon resins based on C 5 , C 5 / C 9 or C 9 monomer streams, or polyterpene resins based on ⁇ -pinene and / or ⁇ -pinene and / or ⁇ -limonene.
- the aforementioned adhesive resins can be used both alone and in admixture.
- Both solid and liquid resins can be used at room temperature.
- additives can typically be used:
- Plasticizers such as plasticizer oils or low molecular weight liquid polymers such as low molecular weight polybutenes
- Sunscreens such as UV absorbers or hindered amines
- Fillers such as fibers, carbon black, zinc oxide, titanium dioxide, micro-solid spheres, solid or hollow glass spheres, silica, silicates, chalk
- correspondingly useful elastomers include, but are not limited to, those based on pure hydrocarbons such as unsaturated polydienes such as natural or synthetically produced polyisoprene or polybutadiene, chemically substantially saturated elastomers such as saturated ethylene-propylene copolymers, ⁇ -olefin copolymers, polyisobutylene, butyl rubber, ethylene Propylene rubber and chemically functionalized hydrocarbons such as halogen-containing, acrylate-containing or vinyl ether-containing polyolefins, to name but a few.
- pure hydrocarbons such as unsaturated polydienes such as natural or synthetically produced polyisoprene or polybutadiene, chemically substantially saturated elastomers such as saturated ethylene-propylene copolymers, ⁇ -olefin copolymers, polyisobutylene, butyl rubber, ethylene Propylene rubber and chemically functionalized hydrocarbons such as halogen-containing, acrylate-
- the preparation and coating of the adhesive can be carried out from solution, dispersion and from the melt. Preference is given to working from solution and from the melt. Particularly preferred is the preparation of the adhesive from the melt, using batch as well as continuous processes are used. Particularly advantageous is the continuous production by means of an extruder.
- a universal fabric tape according to the invention requires a certain layer thickness for the adhesive in order to securely adhere even to rough or structured adhesive substrates such as wood, stone, concrete, etc.
- the desired adhesive behavior is achieved.
- the absolute amount of the effective layer thickness depends on the structure of the fabric: Depending on the roughness of the side to be coated, amounts of up to 50 g / m 2 are required, solely to fill in the depressions in the tissue, without this part of the adhesive
- a rough orientation for the mass requirement for the desired adhesive behavior is an "effective" layer thickness of 60 to 150 ⁇ m.
- the coating technology must be selected.
- Drying, crosslinking, curing of the adhesive layer follow as needed and are well known in the art.
- the adhesive tape according to the invention is particularly suitable for outdoor applications in, for example, the home and garden. If the tape is exposed to UV rays and the weather, the benefits come into play. Even pest attacks can damage the tape little.
- the determination of the bond strength was carried out as follows. As a defined primer, a steel surface, a polyethylene surface (PE) and a 150 grit sandpaper were used. The glued surface element to be examined was cut to a width of 20 mm and a length of about 25 cm, provided with a handling section and immediately thereafter pressed five times with a steel roller of 4 kg at a feed rate of 10 m / min on the selected primer. Immediately thereafter, the glued surface element was at an angle deducted from 180 ° from the primer with a tensile testing device (Zwick) and measured the force required for this at room temperature. The measured value (in N / cm) was the average of three individual measurements.
- Zwick tensile testing device
- the samples were glued in 20 mm wide and 25 cm long on a glass plate with a thickness of 4 mm and rolled five times with a 2 kg roll.
- the samples were stored with the glass side up in a UV chamber with xenon lamp at an irradiance of 300 W / m 2 . Each day, a new strip was removed from each UV chamber per sample and removed from the glass plate after conditioning to room temperature for 1 hour.
- the strips were visually evaluated after reconditioning to room temperature, then stripped at 90 ° and 180 ° and evaluated for tearing and residue.
- the manufacturer for example, company Atlas
- a black pigmented acrylic dispersion at a coverage of 35 g / m 2 is coated.
- T g -value soft and Blocking-prone coating is then immediately coated with a transparent topcoat based on a hard acrylate dispersion with a coverage of 10 g / m 2 covering and dried so that the self-crosslinking topcoat is cured.
- the tearability and especially the tearability in weft direction from the edge are significantly improved by this coating.
- the carrier material is "hand-tearable”.
- Example 1 The support material of Example 1 is mixed with 110 g / m 2 of a synthetic rubber
- Hot melt adhesive coated consisting of
- elastomer content 3/4 Tuftec® P 1500, a partially hydrogenated SBS block copolymer from Asahi with 30% by weight block polystyrene content, and 1/4 Kraton® G 1657, a SEBS block copolymer from Kraton with a Diblock content of 35% by weight and a block polystyrene content of 13% by weight
- Tuftec® P 1500 a partially hydrogenated SBS block copolymer from Asahi with 30% by weight block polystyrene content
- Kraton® G 1657 a SEBS block copolymer from Kraton with a Diblock content of 35% by weight and a block polystyrene content of 13% by weight
- Tinuvin P 1% by weight of Tinuvin P.
- the material meets all criteria for a premium fabric tape according to the invention.
- a raw fabric with a rib weave is used here alternatively, that a 22-gauge PA 6,6-Gam is used as warp and a 150 uses the PET yarn with a thread count in the warp of 42 cm “1 and 44 cm “1 in the shot
- the maximum tensile force is at 40 N / cm on the edge of the desired target area, but this is associated with excellent cross-tearability.
- Tear strength can be counterbalanced by a thicker warp yarn and / or increasing the
- the adhesive coating is carried out as in Example 2.
- a 90 g PET fabric with plain weave has a thread count of 50 cm -1 in the warp with a standard yarn and a thread count of 32 cm 1 in the weft with a yarn of 150.
- the support has a maximum tensile force of 118 N / cm and can only be tearing under unacceptable high force and therefore not suitable for use with the universal fabric tape insert
- the backing material is classified as "non-hand tearable”.
- the adhesive coating is carried out as in Example 2.
- Counterexample 5 corresponds to a commercial fabric tape made of cellulosic with a standard natural rubber adhesive.
- a 150 mesh viscose fabric (about 110 g / m 2 gray fabric; symmetrical plain weave with Nm50-yarns in warp and weft) with upper, pigmented acrylate (60 g / m 2) and rear-side natural rubber coating (110 g / m 2, no special UV -Stabilmaschine) can be easily torn, sticks well on different surfaces, but has serious shortcomings in the UV and weathering tests after a short exposure time. Because of its composition, the tape is easily attacked and destroyed by microorganisms, it is unsuitable for outdoor use.
- Example 2 with a good combination of hand tearability, high mechanical strengths, balanced adhesion, weather resistance, and residue-free resistance to repellency after extended use, is a true premium outdoor fabric adhesive tape. With limitations on residue-free resistibility and lower adhesive strength on nonpolar substrates This is also the case for example 1.
- the specified bond strength target values can be set by optimizing the resin content in terms of type and amount.
- Example 3 has weaknesses in the mechanical tensile load in the warp direction due to reduced physical strength values, but this can be counteracted with appropriate modification of the fabric construction. By contrast, the counterexamples lack either the essential properties of hand tearability (No. 4) or the required UV and weather resistance (No. 5).
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09777306A EP2303977A1 (en) | 2008-07-23 | 2009-07-20 | Adhesive tape comprising a fabric support |
DE112009001098.9T DE112009001098B4 (en) | 2008-07-23 | 2009-07-20 | Adhesive tape with a carrier made of a fabric |
CN2009801218877A CN102057004A (en) | 2008-07-23 | 2009-07-20 | Adhesive tape comprising a fabric support |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008034368.4 | 2008-07-23 | ||
DE102008034368 | 2008-07-23 |
Publications (1)
Publication Number | Publication Date |
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WO2010009854A1 true WO2010009854A1 (en) | 2010-01-28 |
Family
ID=41381723
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/005255 WO2010009854A1 (en) | 2008-07-23 | 2009-07-20 | Adhesive tape comprising a fabric support |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2303977A1 (en) |
CN (1) | CN102057004A (en) |
DE (1) | DE112009001098B4 (en) |
WO (1) | WO2010009854A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019180052A1 (en) * | 2018-03-23 | 2019-09-26 | Tesa Se | Weather-resistant adhesive which flows on well, and adhesive tapes based thereon |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1548080A1 (en) * | 2003-12-18 | 2005-06-29 | Coroplast Fritz Müller GmbH & Co. KG | Technical adhesive tape and process for its manufacture |
DE202004019761U1 (en) * | 2004-12-22 | 2006-05-04 | Coroplast Fritz Müller Gmbh & Co. Kg | Technical adhesive tape useful for securing and/or insulating automobile cable harnesses comprises a textile support, a pressure-sensitive adhesive layer and a polyurethane coating |
EP2045303A1 (en) * | 2007-10-05 | 2009-04-08 | Scapa France | Abrasion-resistant adhesive tape |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10252089A1 (en) * | 2002-11-08 | 2004-05-27 | Tesa Ag | Adhesive and use of the same for a PSA strip made of at least one layer, which can be removed again without leaving any residue and without destruction by stretching it in the bonding plane |
-
2009
- 2009-07-20 EP EP09777306A patent/EP2303977A1/en not_active Withdrawn
- 2009-07-20 DE DE112009001098.9T patent/DE112009001098B4/en not_active Expired - Fee Related
- 2009-07-20 CN CN2009801218877A patent/CN102057004A/en active Pending
- 2009-07-20 WO PCT/EP2009/005255 patent/WO2010009854A1/en active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1548080A1 (en) * | 2003-12-18 | 2005-06-29 | Coroplast Fritz Müller GmbH & Co. KG | Technical adhesive tape and process for its manufacture |
DE202004019761U1 (en) * | 2004-12-22 | 2006-05-04 | Coroplast Fritz Müller Gmbh & Co. Kg | Technical adhesive tape useful for securing and/or insulating automobile cable harnesses comprises a textile support, a pressure-sensitive adhesive layer and a polyurethane coating |
EP2045303A1 (en) * | 2007-10-05 | 2009-04-08 | Scapa France | Abrasion-resistant adhesive tape |
Non-Patent Citations (1)
Title |
---|
See also references of EP2303977A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019180052A1 (en) * | 2018-03-23 | 2019-09-26 | Tesa Se | Weather-resistant adhesive which flows on well, and adhesive tapes based thereon |
Also Published As
Publication number | Publication date |
---|---|
DE112009001098A5 (en) | 2011-03-10 |
EP2303977A1 (en) | 2011-04-06 |
CN102057004A (en) | 2011-05-11 |
DE112009001098B4 (en) | 2021-12-09 |
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