US20020098347A1 - Multilayer adhesive tape - Google Patents
Multilayer adhesive tape Download PDFInfo
- Publication number
- US20020098347A1 US20020098347A1 US09/207,814 US20781498A US2002098347A1 US 20020098347 A1 US20020098347 A1 US 20020098347A1 US 20781498 A US20781498 A US 20781498A US 2002098347 A1 US2002098347 A1 US 2002098347A1
- Authority
- US
- United States
- Prior art keywords
- interlayer
- adhesive tape
- backing layer
- tape according
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000002390 adhesive tape Substances 0.000 title claims description 26
- 239000011229 interlayer Substances 0.000 claims abstract description 79
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims abstract description 48
- 239000010410 layer Substances 0.000 claims abstract description 40
- 239000004971 Cross linker Substances 0.000 claims abstract description 37
- 239000000203 mixture Substances 0.000 claims abstract description 33
- 239000004952 Polyamide Substances 0.000 claims abstract description 25
- 229920002647 polyamide Polymers 0.000 claims abstract description 25
- 244000043261 Hevea brasiliensis Species 0.000 claims abstract description 16
- 229920003052 natural elastomer Polymers 0.000 claims abstract description 16
- 229920001194 natural rubber Polymers 0.000 claims abstract description 16
- 229920003048 styrene butadiene rubber Polymers 0.000 claims abstract description 8
- 239000000126 substance Substances 0.000 claims abstract description 8
- 239000000470 constituent Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 15
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 12
- 238000010894 electron beam technology Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 125000002723 alicyclic group Chemical group 0.000 claims description 7
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 6
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- GTELLNMUWNJXMQ-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;prop-2-enoic acid Chemical class OC(=O)C=C.OC(=O)C=C.OC(=O)C=C.CCC(CO)(CO)CO GTELLNMUWNJXMQ-UHFFFAOYSA-N 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229920001577 copolymer Polymers 0.000 claims description 5
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 238000003490 calendering Methods 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 3
- 239000013066 combination product Substances 0.000 claims description 2
- 229940127555 combination product Drugs 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 description 9
- 238000004132 cross linking Methods 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 7
- 230000003712 anti-aging effect Effects 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000005060 rubber Substances 0.000 description 5
- 230000001588 bifunctional effect Effects 0.000 description 4
- 239000004014 plasticizer Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000013032 Hydrocarbon resin Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- FQUNFJULCYSSOP-UHFFFAOYSA-N bisoctrizole Chemical compound N1=C2C=CC=CC2=NN1C1=CC(C(C)(C)CC(C)(C)C)=CC(CC=2C(=C(C=C(C=2)C(C)(C)CC(C)(C)C)N2N=C3C=CC=CC3=N2)O)=C1O FQUNFJULCYSSOP-UHFFFAOYSA-N 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 239000006232 furnace black Substances 0.000 description 2
- 229920006270 hydrocarbon resin Polymers 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- WJQOZHYUIDYNHM-UHFFFAOYSA-N 2-tert-Butylphenol Chemical compound CC(C)(C)C1=CC=CC=C1O WJQOZHYUIDYNHM-UHFFFAOYSA-N 0.000 description 1
- QHPQWRBYOIRBIT-UHFFFAOYSA-N 4-tert-butylphenol Chemical compound CC(C)(C)C1=CC=C(O)C=C1 QHPQWRBYOIRBIT-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229920009087 Platamid® M 1276 Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- 229920006097 Ultramide® Polymers 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 235000019241 carbon black Nutrition 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000001227 electron beam curing Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000006235 reinforcing carbon black Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000001550 time effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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
- C09J133/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Adhesives based on derivatives of such polymers
- C09J133/04—Homopolymers or copolymers of esters
- C09J133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09J133/08—Homopolymers or copolymers of acrylic acid esters
-
- 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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic 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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/12—Layered products comprising a layer of natural or synthetic rubber comprising natural rubber
-
- 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
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/14—Layered products comprising a layer of natural or synthetic rubber comprising synthetic rubber copolymers
-
- 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
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- 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
- C09J7/22—Plastics; Metallised plastics
- C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/241—Polyolefin, e.g.rubber
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
-
- 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
- B32B2270/00—Resin or rubber layer containing a blend of at least two different 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
- 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
- C09J2301/122—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 only on one side of the carrier, e.g. single-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
- C09J2301/10—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
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/16—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer
- C09J2301/162—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the structure of the carrier layer the carrier being a laminate constituted by plastic layers only
-
- 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
- C09J2407/00—Presence of natural rubber
- C09J2407/006—Presence of natural rubber 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
- C09J2409/00—Presence of diene rubber
- C09J2409/006—Presence of diene rubber 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
- C09J2477/00—Presence of polyamide
- C09J2477/006—Presence of polyamide in the substrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2809—Web or sheet containing structurally defined element or component and having an adhesive outermost layer including irradiated or wave energy treated component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2848—Three or more layers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2852—Adhesive compositions
- Y10T428/2878—Adhesive compositions including addition polymer from unsaturated monomer
- Y10T428/2891—Adhesive compositions including addition polymer from unsaturated monomer including addition polymer from alpha-beta unsaturated carboxylic acid [e.g., acrylic acid, methacrylic acid, etc.] Or derivative thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31725—Of polyamide
Definitions
- the invention relates to an adhesive tape which has been given a pressure-sensitive adhesive coating, having an elastomeric backing layer, a single- or double-sided energy-elastic interlayer and a pressure-sensitive adhesive layer on one or both sides.
- interlayers between the actual backing layer and the pressure-sensitive adhesive coating are known.
- One of the purposes of these interlayers is to prevent or lessen the migration of constituents from the backing layer into the pressure-sensitive adhesive. Migration of this kind may lead to structural alterations in the pressure-sensitive adhesive layer and/or to deposits on the surface of the pressure-sensitive adhesive, and hence to a reduction in the adhesion.
- a further function of the interlayers is to smooth out uneven backing surfaces.
- interlayers especially if they are energy-elastically deformable—may have the function of absorbing stress peaks greater than the average force acting on the bond area and of distributing such peak stresses over the area of the bond in order thereby to counter fracture of the bond.
- a disadvantage of the interlayers consisting of polyamides is that, while they often fulfil the barrier, smoothing and force-absorbing function, at the same time their adhesion to the underlying backing is inadequate. At relatively high stress levels, especially in the case of stresses in which peel forces become active, there is a possibility that the adhesive tape might suffer delamination, instances of which may lead to complete failure of the bond.
- the object of the invention therefore, was to provide an adhesive tape which, with an elastomeric backing layer, has an energy-elastic interlayer anchored securely on the backing layer.
- an adhesive tape which has been given a single- or double-sided pressure-sensitive adhesive treatment and has an elastomeric backing layer, the polymeric framework of the backing layer consisting essentially of natural rubber or of a mixture of natural rubber with at least one styrene-butadiene rubber.
- the styrene-butadiene rubber of the backing layer can be a random copolymer having a styrene content of about 23% by weight.
- the natural rubber or mixture of natural rubber with styrene-butadiene rubber that is used for the backing layer is crosslinkable by means of electron beams.
- the backing layer comprises an electron beam-crosslinkable, polyfunctional crosslinker, preferably oligoacrylate or oligovinyl ether, which is partially soluble in the polymeric framework and whose physical forces of interaction with the polymeric framework are so low that it tends towards diffusion to the surface of the backing layer where, together with its fraction which is not dissolved in the polymeric framework, it forms a thin film which contacts the entire area of the polyamide interlayer.
- polyfunctional crosslinker preferably oligoacrylate or oligovinyl ether
- the electron beam-crosslinkable polyfunctional crosslinker is at least partially soluble in the polyamide and is therefore able to diffuse into it. Irradiation with electrons crosslinks the pure framework of the backing, the framework of the backing together with the crosslinker, the pure crosslinker dispersed in the backing, the crosslinker present like a film on the surface of the backing, and those fractions of the crosslinker that have diffused into the polyamide interlayer, this crosslinking possibly taking place with attachment to the polyamide, so that an indissoluble, predominantly covalent attachment of the interlayer to the backing is achieved.
- the combined product can be irradiated, for example, with an electron accelerator of the scanner type at a radiation dose of from 10 to 200 kGy, preferably from 50 to 100 kGy and, with particular preference, 80 kGy.
- the required acceleration voltage depends on the thickness of the combined product that is to be crosslinked. To achieve sufficient homogeneity of crosslinking, the combined product can be irradiated from both sides.
- the crosslinked combined product composed of backing, crosslinker film and polyamide interlayer preferably carries, on the interlayer, a polyacrylate-based pressure-sensitive adhesive, which may or may not be crosslinked.
- the pressure-sensitive adhesive can be crosslinked separately on an auxiliary support or in combination with interlayer and backing by means of a chemical reaction, via an inherent mechanism and/or physically by irradiation with electrons in the course of the crosslinking of the backing with the interlayer.
- the crosslinker which is supplied to the backing, diffuses onto its surface as a soluble fraction and is deposited there, inter alia, as an insoluble fraction, and which, following partial diffusion into the adjacent polyamide interlayer, brings about anchorage of the interlayer to the backing following its crosslinking with electron beams, is a polyfunctional—especially di-, tri- or tetrafunctional—oligoacrylate or an oligovinyl ether having terminal, electron beam-crosslinkable vinyl groups.
- the base compound carrying the vinyl groups may, for example, be an ethoxylated or non-ethoxylated polyol, an oligoether, or an oligourethane having terminal OH groups.
- crosslinker can be admixed alone or in a blend with one or more other crosslinkers of the same or different functionality to the backing formulation.
- a bifunctional urethane acrylate having an average molecular weight of 5000 or a tetrafunctional oligoether acrylate having an average molecular weight of 1000 or a trifunctional oligoether acrylate, such as ethoxylated trimethylolpropane triacrylate can be employed per se. It is also possible, however, to blend the bifunctional urethane acrylate or the tetrafunctional oligoether acrylate in equal or unequal parts with the trifunctional ethoxylated trimethylolpropane triacrylate.
- the crosslinker or the mixture of different crosslinkers is added to the backing formulation in an amount of from 5 to 20% by weight, especially 7% by weight.
- customary anti-ageing agents which, depending on the particular application, may originate from the class of the discolouring or non-discolouring anti-ageing agents, in particular in the range from 0 tp 10 phr, and also with known light stabilizers or ozone protectants. Blending with plasticizers is also possible.
- the natural rubber or the mixture of natural rubber and styrene-butadiene rubber can be admixed with reinforcing, semi-reinforcing or non-reinforcing carbon blacks, in particular at from 0 to 50 phr, with zinc oxide, in particular at from 0 to 50 phr, and/or with other fillers, such as silica, silicates or chalk. Fillers other than those mentioned can also be used. It is possible in addition to add resins from the class of the phenolic resins and/or hydrocarbon resins, in the range, in particular, of from 0 to 50 phr.
- the backing layer has a thickness of from 400 to 3000 ⁇ m, in particular from 500 to 1400 ⁇ m.
- the backing mixture is preferably prepared in an internal mixer of the kind typically used for elastomer compounding. Processing takes place preferably without solvent.
- the electron beam-crosslinkable polyfunctional crosslinker and the desired fillers may be added to the natural rubber or to the mixture of natural rubber with styrene-butadiene rubber at the same time.
- the resulting mixture can subsequently be extruded or calendered to the desired thickness on customary commercial machines. This gives a backing layer thickness that is within the ranges set out above.
- the interlayer consists of a polyamide or of a mixture of polyamides in which polyfunctional oligoacrylates are partly soluble; for example, it consists of an amorphous ternary copolyamide having alicyclic units, which copolyamide may have been blended with minor amounts of a partially crystalline polyaminoamide.
- a polyamide which includes alicyclic segments or a mixture of polyamides whose excess component includes alicyclic segments it is possible to use a polyamide which includes alicyclic segments or a mixture of polyamides whose excess component includes alicyclic segments.
- the interlayer can be produced in a separate operation from the solution or without solvent, by extrusion with or without an auxiliary support, specifically in a thickness of from 5 to 40 ⁇ m, especially 8 ⁇ m. If an auxiliary support is used, the interlayer can be peeled from this support again with no restrictions.
- the pressure-sensitive adhesive consists preferably of copolymers of 2-ethylhexyl acrylate, butyl acrylate, methyl acrylate and acrylic acid, preferably with a composition of from 50 to 70% by weight 2-ethylhexyl acrylate and/or butyl acrylate, from 20 to 40% by weight methyl acrylate, and from 0 to 10% by weight acrylic acid.
- the addition of further, known components is possible in order to obtain certain properties, especially the addition of further comonomers, crosslinkers, tackifier resins and anti-ageing agents.
- the pressure-sensitive adhesive can be processed as a solution, dispersion or melt. It can be applied directly or by the transfer technique to the interlayer. Chemical crosslinking of the pressure-sensitive adhesive with crosslinking agents and/or physical crosslinking with electron beams is advantageous.
- the applied weight of the pressure-sensitive adhesive can likewise be chosen arbitrarily in dependence on the intended use, within the range from 10 to 250 g/m 2 , preferably from 40 to 150 g/m 2 .
- one or both pressure-sensitive adhesive layers may be covered with a release paper, preferably with a double-sidedly anti-adhesively coated masking paper or with a polyolefin-based film.
- the film can have been antiadhesively treated on both sides.
- the backing layer, one or both interlayers and one or both coats of the pressure-sensitive adhesive are brought together by a laminating process.
- the backing layer is first of all shaped by a calendering process on the ready-formed interlayer, which is supported by an auxiliary support.
- the other side of the backing layer is then covered, if desired, with a second interlayer, including auxiliary support, or, in the case of an auxiliary support provided on both sides with an interlayer, is joined with the second interlayer on the other side while the laminate is being wound up into a roll.
- a second interlayer including auxiliary support, or, in the case of an auxiliary support provided on both sides with an interlayer
- the unreacted crosslinker present on the surface of the interlayer is able to diffuse into the pressure-sensitive adhesive and bring about a deterioration in the force of its adhesion to substrates encountered in practice.
- fractions of the crosslinker which have already been crosslinked, on the surface of the interlayer may reduce the spontaneous adhesion of the pressure-sensitive adhesive on the interlayer. It is therefore advantageous for the laminate composed of backing and interlayer to be irradiated with electrons before the crosslinker has diffused to the interlayer surface opposite the backing.
- the auxiliary support or supports is or are peeled off, and, finally, the pressure-sensitive adhesive is applied directly or by the transfer technique to one or both interlayers.
- the present invention describes the construction of a self-adhesive tape which exploits the electron beam crosslinkability of a polyfunctional (at least bifunctional) crosslinker which is partially soluble, and therefore diffuses to the surface of the backing, and is partially insoluble, and therefore becomes deposited, inter alia, on the surface of the backing, this crosslinker being in uninterrupted contact with that fraction that has remained in the backing as well as with that fraction which has diffused into the interlayer.
- the self-adhesive tape backing of the invention consists of natural rubber or of a mixture of natural rubber with a styrene-butadiene rubber, and the interlayer of the invention consists of polyamide which comprises alicyclic segments and in which the polyfunctional crosslinker is soluble.
- the firm connection of the two layers, brought into contact with one another preferably by dry lamination, is brought about essentially by the electron-beam curing of the polyfunctional crosslinker.
- the resulting anchorage of the interlayer on the backing ensures that there is no delamination of the adhesive tape, even under high stresses.
- the basis was a backing layer having the composition in Table 1.
- TABLE 1 Composition of the backing layer for Example 1 Constituents Parts by weight Natural rubber (standard Malaysian rubber CV 50) 41 Polyisoprene having a molecular weight of 2900, 8 as plasticizer Liquid hydrocarbon resin having a viscosity of 7 from 20 to 40 Pas at 25° C., as plasticizer Prepared chalk 30.7 Semi-active furnace black N 772 6.5 Anti-ageing agent 2,2′-methylenebis(4-methyl-6- 0.8 tert-butylphenol) Polyfunctional crosslinker 6
- the framework polymer used was a viscosity-stabilized standard Malaysian rubber CV 50, the following being employed alternatively as the polyfunctional crosslinker:
- a tetrafunctional oligoether acrylate having an average molecular weight of 1,000 and a viscosity of 3.5 Pas at 25° C. (Ebecryl 80 from UCB Chemicals)
- fillers chalk and carbon black, and also two plasticizers and a phenolic anti-ageing agent.
- the interlayer was prepared from an aqueous/alcoholic solution of a mixture of 65 parts by weight of an amorphous ternary copolyamide having alicyclic units (Ultramid 1C from BASF) and 35 parts by weight of a partially crystalline polyiminoamide (Platamid M 1276 from Atochem) by spreading and drying in a coat thickness of 8 ⁇ m on a polyethylene terephthalate film.
- an amorphous ternary copolyamide having alicyclic units Ultramid 1C from BASF
- a partially crystalline polyiminoamide Platinum M 1276 from Atochem
- the backing mixture was shaped and applied by means of a calender to an auxiliary support coated on both sides with the interlayer, the resulting assembly being 0.5 mm thick and being wound up into a roll so that the reverse side of the backing comes into contact with the interlayer that was facing away from the backing during its shaping.
- the auxiliary support employed was a 25 to 50 ⁇ m thick polyethylene terephthalate film. In the course of storage in roll form, there is partial diffusion of the crosslinker from the backing into the interlayer on both sides of the laminate.
- the crosslinked backing described above which is now attached firmly on both sides to an interlayer, was coated on both sides with a pressure-sensitive adhesive.
- the pressure-sensitive adhesive was applied in a dry film thickness of 50 ⁇ m to an anti-adhesively treated auxiliary support and was dried at a temperature of more than 100° C. in order to induce crosslinking.
- the dried, crosslinked pressure-sensitive adhesive was laminated by the transfer technique onto the interlayer exposed after the backing had been unrolled, following removal of the auxiliary support for the interlayer.
- the pressure-sensitive adhesive employed was a copolymer of methyl acrylate with 2-ethylhexyl acrylate and acrylic acid which crosslinks at a temperature upwards of 100° C. with 0.5% of an acetylacetone-based chelate formed with titanium.
- the copolymer described has the following composition:
- a double-sided pressure-sensitive adhesive tape was produced by the procedure described in Example 1.
- the backing used was a mixture having the following composition: TABLE 3 Composition of the backing layer for Example 2 Constituents Parts by weight Natural rubber (standard Malaysian rubber CV 50) 62.7 Prepared chalk 24.7 Semi-active furnace black N 772 6.2 Anti-ageing agent 2,2′-methylenebis(4-methyl-6- 1.4 tert-butylphenol) Polyfunctional oligoacrylate 5
- the polyfunctional oligoacrylate used was ethoxylated trimethylolpropane triacrylate having a viscosity of 25° C. of 80 mPas (Ebecryl 160 from UCB Chemicals).
- the interlayer employed is again the mixture of two polyamides described in Example 1.
- the pressure-sensitive adhesive employed was an acrylate-based copolymer having the composition described in Example 1.
- the uncrosslinked laminate comprising the backing and the interlayers was stored for different periods of time at 20° C. and 40° C., and only then was crosslinked with electron beams.
- the pressure-sensitive adhesive was then laminated by the transfer technique onto the interlayers and the overall construction was stored at 70° C. for one week in order, for the purpose of optimum adhesion, to allow the pressure-sensitive adhesive to flow onto the interlayers.
- the samples produced in this way were subjected to a shear load at 70° C.
- one pressure-sensitive adhesive side of a sample was reinforced with a 50 ⁇ m thick aluminium foil. From this assembly there was cut a 13 mm wide and over 20 mm long strip which along a length of 20 mm of its pressure-sensitive adhesive, free side was bonded to a finely polished steel plate and rolled firm 4 times with a roller weighing 2 kp.
- the table shows that a significant drop in the shear stability occurs only when the laminate composed of backing and interlayer is stored for more than 4 weeks at a temperature of up to 40° C. prior to electron beam (EB) crosslinking, so that it can be assumed that in the case of the exemplary construction the diffusion of the oligoacrylate to the surface of the interlayer takes more than 4 weeks. Before this time, no reduction is expected in the adhesion of the pressure-sensitive adhesive (PSA) on the interlayer as a result of crosslinked oligoacrylate in the case of the exemplary construction.
- PSA pressure-sensitive adhesive
Abstract
Description
- The invention relates to an adhesive tape which has been given a pressure-sensitive adhesive coating, having an elastomeric backing layer, a single- or double-sided energy-elastic interlayer and a pressure-sensitive adhesive layer on one or both sides.
- The use of interlayers between the actual backing layer and the pressure-sensitive adhesive coating is known. One of the purposes of these interlayers is to prevent or lessen the migration of constituents from the backing layer into the pressure-sensitive adhesive. Migration of this kind may lead to structural alterations in the pressure-sensitive adhesive layer and/or to deposits on the surface of the pressure-sensitive adhesive, and hence to a reduction in the adhesion. A further function of the interlayers is to smooth out uneven backing surfaces.
- In the case of the bonded adhesive tape, interlayers—especially if they are energy-elastically deformable—may have the function of absorbing stress peaks greater than the average force acting on the bond area and of distributing such peak stresses over the area of the bond in order thereby to counter fracture of the bond.
- For example, it is known for this application to use thin layers of polymers which are in an energy-elastic state thermodynamically owing to their high glass transition temperature and/or their partial crystallinity. Polyamides in particular meet the requirements that are placed on an interlayer.
- A disadvantage of the interlayers consisting of polyamides, however, is that, while they often fulfil the barrier, smoothing and force-absorbing function, at the same time their adhesion to the underlying backing is inadequate. At relatively high stress levels, especially in the case of stresses in which peel forces become active, there is a possibility that the adhesive tape might suffer delamination, instances of which may lead to complete failure of the bond.
- The object of the invention, therefore, was to provide an adhesive tape which, with an elastomeric backing layer, has an energy-elastic interlayer anchored securely on the backing layer.
- To achieve this object the invention proposes an adhesive tape which has been given a single- or double-sided pressure-sensitive adhesive treatment and has an elastomeric backing layer, the polymeric framework of the backing layer consisting essentially of natural rubber or of a mixture of natural rubber with at least one styrene-butadiene rubber.
- The styrene-butadiene rubber of the backing layer can be a random copolymer having a styrene content of about 23% by weight. The natural rubber or mixture of natural rubber with styrene-butadiene rubber that is used for the backing layer is crosslinkable by means of electron beams.
- In accordance with the invention the backing layer comprises an electron beam-crosslinkable, polyfunctional crosslinker, preferably oligoacrylate or oligovinyl ether, which is partially soluble in the polymeric framework and whose physical forces of interaction with the polymeric framework are so low that it tends towards diffusion to the surface of the backing layer where, together with its fraction which is not dissolved in the polymeric framework, it forms a thin film which contacts the entire area of the polyamide interlayer.
- In that case the electron beam-crosslinkable polyfunctional crosslinker is at least partially soluble in the polyamide and is therefore able to diffuse into it. Irradiation with electrons crosslinks the pure framework of the backing, the framework of the backing together with the crosslinker, the pure crosslinker dispersed in the backing, the crosslinker present like a film on the surface of the backing, and those fractions of the crosslinker that have diffused into the polyamide interlayer, this crosslinking possibly taking place with attachment to the polyamide, so that an indissoluble, predominantly covalent attachment of the interlayer to the backing is achieved.
- It is advantageous if the combined product composed of backing, crosslinker film and polyamide is irradiated with electrons before the latter has diffused to that side of the polyamide which is opposite the rubber backing.
- The combined product can be irradiated, for example, with an electron accelerator of the scanner type at a radiation dose of from 10 to 200 kGy, preferably from 50 to 100 kGy and, with particular preference, 80 kGy. The required acceleration voltage depends on the thickness of the combined product that is to be crosslinked. To achieve sufficient homogeneity of crosslinking, the combined product can be irradiated from both sides.
- The crosslinked combined product composed of backing, crosslinker film and polyamide interlayer preferably carries, on the interlayer, a polyacrylate-based pressure-sensitive adhesive, which may or may not be crosslinked.
- The pressure-sensitive adhesive can be crosslinked separately on an auxiliary support or in combination with interlayer and backing by means of a chemical reaction, via an inherent mechanism and/or physically by irradiation with electrons in the course of the crosslinking of the backing with the interlayer.
- The crosslinker which is supplied to the backing, diffuses onto its surface as a soluble fraction and is deposited there, inter alia, as an insoluble fraction, and which, following partial diffusion into the adjacent polyamide interlayer, brings about anchorage of the interlayer to the backing following its crosslinking with electron beams, is a polyfunctional—especially di-, tri- or tetrafunctional—oligoacrylate or an oligovinyl ether having terminal, electron beam-crosslinkable vinyl groups. The base compound carrying the vinyl groups may, for example, be an ethoxylated or non-ethoxylated polyol, an oligoether, or an oligourethane having terminal OH groups.
- In accordance with the invention the crosslinker can be admixed alone or in a blend with one or more other crosslinkers of the same or different functionality to the backing formulation.
- For example, a bifunctional urethane acrylate having an average molecular weight of 5000 or a tetrafunctional oligoether acrylate having an average molecular weight of 1000 or a trifunctional oligoether acrylate, such as ethoxylated trimethylolpropane triacrylate, can be employed per se. It is also possible, however, to blend the bifunctional urethane acrylate or the tetrafunctional oligoether acrylate in equal or unequal parts with the trifunctional ethoxylated trimethylolpropane triacrylate.
- Preferably, the crosslinker or the mixture of different crosslinkers is added to the backing formulation in an amount of from 5 to 20% by weight, especially 7% by weight.
- To increase the durability of the backing it can be admixed with customary anti-ageing agents, which, depending on the particular application, may originate from the class of the discolouring or non-discolouring anti-ageing agents, in particular in the range from 0 tp 10 phr, and also with known light stabilizers or ozone protectants. Blending with plasticizers is also possible.
- In order establish specifically the desired properties of the backing it is possible if desired to use fillers. For instance, the natural rubber or the mixture of natural rubber and styrene-butadiene rubber can be admixed with reinforcing, semi-reinforcing or non-reinforcing carbon blacks, in particular at from 0 to 50 phr, with zinc oxide, in particular at from 0 to 50 phr, and/or with other fillers, such as silica, silicates or chalk. Fillers other than those mentioned can also be used. It is possible in addition to add resins from the class of the phenolic resins and/or hydrocarbon resins, in the range, in particular, of from 0 to 50 phr. Depending on the intended application of the adhesive tape, all of these additives referred to can be employed either alone or in any desired combination with one another to produce the backing, in order to obtain optimum tailoring to the utility. Through the use of these additives it is also readily possible to provide the black coloration of the backing which is generally required by the industry.
- The backing layer has a thickness of from 400 to 3000 μm, in particular from 500 to 1400 μm.
- The backing mixture is preferably prepared in an internal mixer of the kind typically used for elastomer compounding. Processing takes place preferably without solvent. The electron beam-crosslinkable polyfunctional crosslinker and the desired fillers may be added to the natural rubber or to the mixture of natural rubber with styrene-butadiene rubber at the same time. The resulting mixture can subsequently be extruded or calendered to the desired thickness on customary commercial machines. This gives a backing layer thickness that is within the ranges set out above.
- In a preferred embodiment the interlayer consists of a polyamide or of a mixture of polyamides in which polyfunctional oligoacrylates are partly soluble; for example, it consists of an amorphous ternary copolyamide having alicyclic units, which copolyamide may have been blended with minor amounts of a partially crystalline polyaminoamide. In that case it is possible to use a polyamide which includes alicyclic segments or a mixture of polyamides whose excess component includes alicyclic segments.
- In this context, the interlayer can be produced in a separate operation from the solution or without solvent, by extrusion with or without an auxiliary support, specifically in a thickness of from 5 to 40 μm, especially 8 μm. If an auxiliary support is used, the interlayer can be peeled from this support again with no restrictions.
- The pressure-sensitive adhesive consists preferably of copolymers of 2-ethylhexyl acrylate, butyl acrylate, methyl acrylate and acrylic acid, preferably with a composition of from 50 to 70% by weight 2-ethylhexyl acrylate and/or butyl acrylate, from 20 to 40% by weight methyl acrylate, and from 0 to 10% by weight acrylic acid.
- The addition of further, known components is possible in order to obtain certain properties, especially the addition of further comonomers, crosslinkers, tackifier resins and anti-ageing agents. The pressure-sensitive adhesive can be processed as a solution, dispersion or melt. It can be applied directly or by the transfer technique to the interlayer. Chemical crosslinking of the pressure-sensitive adhesive with crosslinking agents and/or physical crosslinking with electron beams is advantageous. The applied weight of the pressure-sensitive adhesive can likewise be chosen arbitrarily in dependence on the intended use, within the range from 10 to 250 g/m2, preferably from 40 to 150 g/m2. Furthermore, one or both pressure-sensitive adhesive layers may be covered with a release paper, preferably with a double-sidedly anti-adhesively coated masking paper or with a polyolefin-based film. The film can have been antiadhesively treated on both sides.
- Also embraced by the concept of the invention are processes for producing an adhesive tape of the invention.
- In one preferred production process the backing layer, one or both interlayers and one or both coats of the pressure-sensitive adhesive are brought together by a laminating process.
- In a second preferred process, the backing layer is first of all shaped by a calendering process on the ready-formed interlayer, which is supported by an auxiliary support. The other side of the backing layer is then covered, if desired, with a second interlayer, including auxiliary support, or, in the case of an auxiliary support provided on both sides with an interlayer, is joined with the second interlayer on the other side while the laminate is being wound up into a roll. As soon as the crosslinker film on the backing surface has come into contact with the polyamide of the interlayer, the dissolution and diffusion of the crosslinker into the polyamide begins. Experience has shown that the unreacted crosslinker present on the surface of the interlayer is able to diffuse into the pressure-sensitive adhesive and bring about a deterioration in the force of its adhesion to substrates encountered in practice. Likewise, fractions of the crosslinker which have already been crosslinked, on the surface of the interlayer, may reduce the spontaneous adhesion of the pressure-sensitive adhesive on the interlayer. It is therefore advantageous for the laminate composed of backing and interlayer to be irradiated with electrons before the crosslinker has diffused to the interlayer surface opposite the backing. In the next step of the process the auxiliary support or supports is or are peeled off, and, finally, the pressure-sensitive adhesive is applied directly or by the transfer technique to one or both interlayers.
- The present invention describes the construction of a self-adhesive tape which exploits the electron beam crosslinkability of a polyfunctional (at least bifunctional) crosslinker which is partially soluble, and therefore diffuses to the surface of the backing, and is partially insoluble, and therefore becomes deposited, inter alia, on the surface of the backing, this crosslinker being in uninterrupted contact with that fraction that has remained in the backing as well as with that fraction which has diffused into the interlayer. The self-adhesive tape backing of the invention consists of natural rubber or of a mixture of natural rubber with a styrene-butadiene rubber, and the interlayer of the invention consists of polyamide which comprises alicyclic segments and in which the polyfunctional crosslinker is soluble. The firm connection of the two layers, brought into contact with one another preferably by dry lamination, is brought about essentially by the electron-beam curing of the polyfunctional crosslinker. The resulting anchorage of the interlayer on the backing ensures that there is no delamination of the adhesive tape, even under high stresses.
- The diffusion of the crosslinker to the surface of the backing and further into the polyamide interlayer, this diffusion preceding irradiation with electrons, takes place spontaneously at room temperature and can be accelerated by elevated temperature. The highest level of adhesion of the pressure-sensitive adhesive on the interlayer is obtained when irradiation with electrons is carried out before the crosslinker has diffused to the interlayer surface facing the pressure-sensitive adhesive. The time required by the crosslinker to reach that surface is of course influenced by the composition and thickness of the interlayer, by the structure of the crosslinker, by its solubility in the interlayer and by the temperature. Experience has shown that, with an adhesive tape construction in the preferred embodiment of the invention, there is no adverse effect on the adhesion of the pressure-sensitive adhesive in the above sense until the uncrosslinked combination product of backing and interlayer with free, diffusable crosslinker is stored at a temperature of up to 40° C. for more than 4 weeks.
- In the text below the invention will be elucidated further, with examples, without wishing thereby to restrict the invention unnecessarily.
- The basis was a backing layer having the composition in Table 1.
TABLE 1 Composition of the backing layer for Example 1 Constituents Parts by weight Natural rubber (standard Malaysian rubber CV 50) 41 Polyisoprene having a molecular weight of 2900, 8 as plasticizer Liquid hydrocarbon resin having a viscosity of 7 from 20 to 40 Pas at 25° C., as plasticizer Prepared chalk 30.7 Semi-active furnace black N 772 6.5 Anti-ageing agent 2,2′-methylenebis(4-methyl-6- 0.8 tert-butylphenol) Polyfunctional crosslinker 6 - The framework polymer used was a viscosity-stabilized standard Malaysian rubber CV 50, the following being employed alternatively as the polyfunctional crosslinker:
- a) a bifunctional urethane acrylate having an average molecular weight of 5,000 and a viscosity of 40 Pas at 25° C. (Ebecryl 230 from UCB Chemicals),
- b) a trifunctional oligoether acrylate based on a trimethylolpropane having a viscosity of 80 mPas at 25° C. (Ebecryl 160 from UCB Chemicals),
- c) a mixture of equal parts of both of these
- d) a tetrafunctional oligoether acrylate having an average molecular weight of 1,000 and a viscosity of 3.5 Pas at 25° C. (Ebecryl 80 from UCB Chemicals)
- e) a tetrafunctional oligoether acrylate having an average molecular weight of 1000 and a viscosity of 3.5 Pas at 25° C. in a mixture with the ethoxylated trimethylolpropane triacrylate (Ebecryl 160 from UCB Chemicals) in equal parts.
- Also used were the fillers chalk and carbon black, and also two plasticizers and a phenolic anti-ageing agent.
- The constituents were mixed together in an internal mixer under the conditions customary in the rubber industry.
- The interlayer was prepared from an aqueous/alcoholic solution of a mixture of 65 parts by weight of an amorphous ternary copolyamide having alicyclic units (Ultramid 1C from BASF) and 35 parts by weight of a partially crystalline polyiminoamide (Platamid M 1276 from Atochem) by spreading and drying in a coat thickness of 8 μm on a polyethylene terephthalate film.
- The backing mixture was shaped and applied by means of a calender to an auxiliary support coated on both sides with the interlayer, the resulting assembly being 0.5 mm thick and being wound up into a roll so that the reverse side of the backing comes into contact with the interlayer that was facing away from the backing during its shaping. The auxiliary support employed was a 25 to 50 μm thick polyethylene terephthalate film. In the course of storage in roll form, there is partial diffusion of the crosslinker from the backing into the interlayer on both sides of the laminate.
- Both sides of the laminate of backing and interlayers were then crosslinked with electron beams over the course of 24 hours with a radiation dose of 100 kGy.
- The crosslinked samples produced in this way were examined for the adhesion of the interlayer to the backing, which was compared with that of uncrosslinked samples. For this purpose, the auxiliary support for the interlayers was first of all removed. Then one side of the laminate was reinforced with a pressure-sensitive adhesive tape. On the other side of the sample, a 30 mm wide strip of a filament-reinforced pressure-sensitive adhesive tape which is obtainable commercially as tesapack 4588 was stuck onto the interlayer, avoiding air-inclusion bubbles, and a roller weighing 5 kp was rolled over the assembly 4 times. On test strips cut to a width of 20 mm, the peeled strength of the interlayer—now bonded to the filament-reinforced pressure-sensitive adhesive tape—from the backing was measured using a tensile testing machine at a peel rate of 300 mm/min.
TABLE 2 Peel force of interlayer from backing Peel force [N/cm] Non-EB- Backing/interlayer crosslinked laminate EB Crosslinker with which backing/interlayer crosslinked the backing was blended laminate at 100 kGy None 0.2 0.4 Ebecryl 230 0.6 2 Ebecryl 160 0.3 >6 1 part by wt. Ebecryl 160 + 0.2 >6 1 part by wt. Ebecryl 230 1 part by wt. Ebecryl 160 + 0.4 >6 1 part by wt. Ebecryl 80 - The crosslinked backing described above, which is now attached firmly on both sides to an interlayer, was coated on both sides with a pressure-sensitive adhesive. The pressure-sensitive adhesive was applied in a dry film thickness of 50 μm to an anti-adhesively treated auxiliary support and was dried at a temperature of more than 100° C. in order to induce crosslinking.
- To produce the adhesive tape of the invention the dried, crosslinked pressure-sensitive adhesive was laminated by the transfer technique onto the interlayer exposed after the backing had been unrolled, following removal of the auxiliary support for the interlayer.
- The pressure-sensitive adhesive employed was a copolymer of methyl acrylate with 2-ethylhexyl acrylate and acrylic acid which crosslinks at a temperature upwards of 100° C. with 0.5% of an acetylacetone-based chelate formed with titanium. The copolymer described has the following composition:
- 30% by weight methyl acrylate
- 60% by weight 2-ethylhexyl acrylate
- 10% by weight acrylic acid
- A double-sided pressure-sensitive adhesive tape was produced by the procedure described in Example 1. The backing used was a mixture having the following composition:
TABLE 3 Composition of the backing layer for Example 2 Constituents Parts by weight Natural rubber (standard Malaysian rubber CV 50) 62.7 Prepared chalk 24.7 Semi-active furnace black N 772 6.2 Anti-ageing agent 2,2′-methylenebis(4-methyl-6- 1.4 tert-butylphenol) Polyfunctional oligoacrylate 5 - The polyfunctional oligoacrylate used was ethoxylated trimethylolpropane triacrylate having a viscosity of 25° C. of 80 mPas (Ebecryl 160 from UCB Chemicals).
- The interlayer employed is again the mixture of two polyamides described in Example 1.
- The pressure-sensitive adhesive employed was an acrylate-based copolymer having the composition described in Example 1.
- In order to study the time effect in the diffusion of the uncrosslinked oligoacrylate through the interlayers to their surfaces, the uncrosslinked laminate comprising the backing and the interlayers was stored for different periods of time at 20° C. and 40° C., and only then was crosslinked with electron beams.
- The pressure-sensitive adhesive was then laminated by the transfer technique onto the interlayers and the overall construction was stored at 70° C. for one week in order, for the purpose of optimum adhesion, to allow the pressure-sensitive adhesive to flow onto the interlayers. The samples produced in this way were subjected to a shear load at 70° C. For this purpose one pressure-sensitive adhesive side of a sample was reinforced with a 50 μm thick aluminium foil. From this assembly there was cut a 13 mm wide and over 20 mm long strip which along a length of 20 mm of its pressure-sensitive adhesive, free side was bonded to a finely polished steel plate and rolled firm 4 times with a roller weighing 2 kp. The end of the vertically positioned sample that protrudes beyond the steel plate was subjected to a weight of 10 N. The test was conducted in a drying cabinet at 70° C. The fracture behaviour of the samples under load was observed.
TABLE 4 Shear stabilities at 70° C. of backing/interlayer laminates stored for different periods in the uncrosslinked state. Storage period of the backing/interlayer laminate prior to Shear stability [min] EB crosslinking Storage at 20° C. Storage at 40° C. no storage >20,000 min 2 weeks >20,000 min >20,000 min 4 weeks >20,000 min >20,000 min 12 weeks 800 min 900 min adhesive fracture adhesive fracture between PSA and between PSA and interlayer interlayer - The table shows that a significant drop in the shear stability occurs only when the laminate composed of backing and interlayer is stored for more than 4 weeks at a temperature of up to 40° C. prior to electron beam (EB) crosslinking, so that it can be assumed that in the case of the exemplary construction the diffusion of the oligoacrylate to the surface of the interlayer takes more than 4 weeks. Before this time, no reduction is expected in the adhesion of the pressure-sensitive adhesive (PSA) on the interlayer as a result of crosslinked oligoacrylate in the case of the exemplary construction.
Claims (14)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19757426.2 | 1997-12-23 | ||
DE19757426A DE19757426A1 (en) | 1997-12-23 | 1997-12-23 | Multi-layer tape |
DE19757426 | 1997-12-23 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020098347A1 true US20020098347A1 (en) | 2002-07-25 |
US6436530B1 US6436530B1 (en) | 2002-08-20 |
Family
ID=7853108
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/207,814 Expired - Fee Related US6436530B1 (en) | 1997-12-23 | 1998-12-09 | Multilayer adhesive tape |
Country Status (5)
Country | Link |
---|---|
US (1) | US6436530B1 (en) |
EP (1) | EP0926213B1 (en) |
JP (1) | JP3957905B2 (en) |
DE (2) | DE19757426A1 (en) |
ES (1) | ES2179417T3 (en) |
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US20030195284A1 (en) * | 2002-04-10 | 2003-10-16 | Paik Syng L. | Low bio-burden elastic bandage |
US20080050598A1 (en) * | 2005-01-21 | 2008-02-28 | Bateman Stuart A | Activation method using modifying agent |
CN101845284A (en) * | 2009-03-06 | 2010-09-29 | 德莎欧洲公司 | The pressure sensitive adhesive that is used for bonding printing plates |
US8142592B2 (en) * | 2008-10-02 | 2012-03-27 | Mylan Inc. | Method for making a multilayer adhesive laminate |
US8389596B2 (en) | 2010-02-26 | 2013-03-05 | Kraft Foods Global Brands Llc | Low-tack, UV-cured pressure sensitive adhesive suitable for reclosable packages |
US8398306B2 (en) | 2005-11-07 | 2013-03-19 | Kraft Foods Global Brands Llc | Flexible package with internal, resealable closure feature |
US8557343B2 (en) | 2004-03-19 | 2013-10-15 | The Boeing Company | Activation method |
US8763890B2 (en) | 2010-02-26 | 2014-07-01 | Intercontinental Great Brands Llc | Package having an adhesive-based reclosable fastener and methods therefor |
US9532584B2 (en) | 2007-06-29 | 2017-01-03 | Kraft Foods Group Brands Llc | Processed cheese without emulsifying salts |
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DE19846902A1 (en) * | 1998-10-12 | 2000-05-04 | Beiersdorf Ag | Electron beam crosslinking and UV crosslinking of mass layers as well as products that are produced with these mass layers |
US6743273B2 (en) * | 2000-09-05 | 2004-06-01 | Donaldson Company, Inc. | Polymer, polymer microfiber, polymer nanofiber and applications including filter structures |
WO2003101729A2 (en) * | 2002-05-29 | 2003-12-11 | Gary Blake | Laminated product and method for its preparation |
US20050058811A1 (en) * | 2003-09-16 | 2005-03-17 | Crum Jesse D. | Joined web business form construction having removable elements |
US20080220194A1 (en) * | 2007-03-08 | 2008-09-11 | Ross Alan Spalding Burnham | Kit for adhesive products |
DE102007012599A1 (en) * | 2007-03-13 | 2008-09-18 | Tesa Ag | Dihydrazide crosslinked water-based styrene-butadiene copolymer dispersion PSA, in particular for soft film adhesive tapes |
US20100175555A1 (en) * | 2008-09-12 | 2010-07-15 | Ismael Ferrer | Polyamide Fine Fibers |
EP2803712A1 (en) | 2013-05-17 | 2014-11-19 | 3M Innovative Properties Company | Multilayer Pressure Sensitive Adhesive Assembly |
DE102019202569A1 (en) | 2019-02-26 | 2020-08-27 | Tesa Se | Adhesive tape comprising at least two different adhesive compositions which are separated from one another by a barrier layer |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4440829A (en) * | 1982-06-29 | 1984-04-03 | Protective Treatments, Inc. | Coated bonding tapes having improved peel strength combined with low temperature flexibility |
JPS59124935A (en) * | 1982-12-29 | 1984-07-19 | Japan Atom Energy Res Inst | Method of radiation curing of natural rubber latex |
JPH07105433B2 (en) * | 1986-05-20 | 1995-11-13 | 三井東圧化学株式会社 | Wafer processing film attachment method |
US4952447A (en) * | 1988-10-28 | 1990-08-28 | Plastomeric, Inc. | Barrier layer in between polyurethane foam and vinyl skin |
BR9206560A (en) * | 1991-10-01 | 1995-03-28 | Minnesota Mining & Mfg | Composite tape, and process for the manufacture of pressure sensitive adhesive tape by melt processing |
JP2726350B2 (en) * | 1992-02-24 | 1998-03-11 | リンテック株式会社 | Adhesive sheet for attaching wafer |
DE4319142A1 (en) * | 1993-06-09 | 1994-12-15 | Huels Chemische Werke Ag | Process for the production of composite articles from polyamides and elastomers |
DE19603919A1 (en) * | 1995-02-23 | 1996-08-29 | Beiersdorf Ag | Pressure-sensitive self-adhesive tape, e.g. for mounting vehicle mirrors |
US5612107A (en) * | 1995-02-24 | 1997-03-18 | Avery Dennison Corporation | Mottle prevention film or coating |
NL1001657C2 (en) | 1995-11-15 | 1997-05-21 | Avery Dennison Corp | Adhesive film. |
JPH09153471A (en) * | 1995-11-30 | 1997-06-10 | Mitsui Toatsu Chem Inc | Adhesive film for dicing semiconductor wafer and use thereof |
JPH09239905A (en) * | 1996-03-12 | 1997-09-16 | Yokohama Rubber Co Ltd:The | Rubber/polyamide type rein laminate |
DE19716996C1 (en) | 1997-04-23 | 1998-06-04 | Beiersdorf Ag | Production of 2-sided pressure-sensitive adhesive tape |
-
1997
- 1997-12-23 DE DE19757426A patent/DE19757426A1/en not_active Ceased
-
1998
- 1998-12-09 US US09/207,814 patent/US6436530B1/en not_active Expired - Fee Related
- 1998-12-09 DE DE59804789T patent/DE59804789D1/en not_active Expired - Fee Related
- 1998-12-09 ES ES98123545T patent/ES2179417T3/en not_active Expired - Lifetime
- 1998-12-09 EP EP98123545A patent/EP0926213B1/en not_active Expired - Lifetime
- 1998-12-18 JP JP36115398A patent/JP3957905B2/en not_active Expired - Fee Related
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JP2010215907A (en) * | 2009-03-06 | 2010-09-30 | Tesa Se | Pressure-sensitive adhesive for bonding printing plates |
US20150114558A1 (en) * | 2009-03-06 | 2015-04-30 | Tesa Se | Pressure-sensitive adhesives for bonding printing plates |
US9260637B2 (en) * | 2009-03-06 | 2016-02-16 | Tesa Se | Pressure-sensitive adhesives for bonding printing plates |
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US8962777B2 (en) * | 2009-03-06 | 2015-02-24 | Tesa Se | Pressure-sensitive adhesives for bonding printing plates |
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EP2226372B2 (en) † | 2009-03-06 | 2024-01-03 | tesa SE | Pressure-sensitive adhesive masses for bonding printing plates |
US9096780B2 (en) | 2010-02-26 | 2015-08-04 | Intercontinental Great Brands Llc | Reclosable fasteners, packages having reclosable fasteners, and methods for creating reclosable fasteners |
US9382461B2 (en) | 2010-02-26 | 2016-07-05 | Intercontinental Great Brands Llc | Low-tack, UV-cured pressure sensitive adhesive suitable for reclosable packages |
US8389596B2 (en) | 2010-02-26 | 2013-03-05 | Kraft Foods Global Brands Llc | Low-tack, UV-cured pressure sensitive adhesive suitable for reclosable packages |
US8763890B2 (en) | 2010-02-26 | 2014-07-01 | Intercontinental Great Brands Llc | Package having an adhesive-based reclosable fastener and methods therefor |
US10287077B2 (en) | 2010-02-26 | 2019-05-14 | Intercontinental Great Brands Llc | Low-tack, UV-cured pressure sensitive adhesive suitable for reclosable packages |
Also Published As
Publication number | Publication date |
---|---|
DE59804789D1 (en) | 2002-08-22 |
US6436530B1 (en) | 2002-08-20 |
EP0926213B1 (en) | 2002-07-17 |
DE19757426A1 (en) | 1999-07-01 |
JPH11256114A (en) | 1999-09-21 |
ES2179417T3 (en) | 2003-01-16 |
JP3957905B2 (en) | 2007-08-15 |
EP0926213A1 (en) | 1999-06-30 |
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