GB2360228A - Conductive adhesive tape - Google Patents
Conductive adhesive tape Download PDFInfo
- Publication number
- GB2360228A GB2360228A GB0103614A GB0103614A GB2360228A GB 2360228 A GB2360228 A GB 2360228A GB 0103614 A GB0103614 A GB 0103614A GB 0103614 A GB0103614 A GB 0103614A GB 2360228 A GB2360228 A GB 2360228A
- Authority
- GB
- United Kingdom
- Prior art keywords
- conductive adhesive
- conductive
- tape
- film
- adhesive tape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002390 adhesive tape Substances 0.000 title claims abstract description 25
- 229910052751 metal Inorganic materials 0.000 claims abstract description 48
- 239000002184 metal Substances 0.000 claims abstract description 48
- 229920006267 polyester film Polymers 0.000 claims abstract description 22
- 239000000853 adhesive Substances 0.000 claims abstract description 19
- 230000001070 adhesive effect Effects 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- -1 poly(ethylene terephthalate) Polymers 0.000 claims description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 6
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 230000003064 anti-oxidating effect Effects 0.000 abstract description 6
- 239000012790 adhesive layer Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 239000011888 foil Substances 0.000 description 34
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000007888 film coating Substances 0.000 description 2
- 238000009501 film coating Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/314—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive layer and/or the carrier being conductive
-
- 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
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
- C09J2400/163—Metal 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
- C09J2467/00—Presence of polyester
- C09J2467/006—Presence of polyester in the substrate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Inorganic Chemistry (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
Abstract
A conductive adhesive tape (2) which is formed by vapor coating a conductive metallic film (22) on a web of polyester film (21), and then coating a layer of conductive adhesive (23) on the conductive metallic film (22) so as to interpose the conductive metal film (22) between the polyester film (21) and the conductive adhesive layer (23), and so as to improve the anti-oxidation and flexibility performance of the conductive adhesive tape (2).
Description
2360228 CONDUCTIVE ADHESIVE TAPE
Field of the Invention
This invention relates to a conductive adhesive tape, and particularly to a conductive adhesive tape formed by vapor coating a conductive metallic film. on a web of polyester film, e.g., a poly(ethylene terephthalate) (PET) web substrate, then coating a layer of conductive adhesive on the conductive metallic film, so that the anti-oxidation and flexibility performance of the conductive adhesive tape are improved and the cost of manufacturing is reduced.
Background of the Invention "Foil tape" is a kind of adhesive tape including a metal foil adapted to adhere between two or more conductive objects for electrical connection, which has been commonly and widely applied on computer monitors, TV screens, mobile phones, or any equipment that needs to meet TCO-99 (or 95, 92) and/or MPR 11, for electromagnetic interference (EM1) shielding and static dissipation. For example, in the application of the foil tapes illustrated in Fig. 1 or 2, the foil tapes T are each of a predetermined length and adhere to a metal frame around a cathode ray tube (CRT) 8, so as to dissipate the static electrical charge of the CRT through the tapes T and to establish an EMI shielding to the CRT.
Typically, a conventional foil tape 1 is substantially of the construction illustrated in Fig. 3, mainly comprising a metal foil 11 made of ductile metal, e.g., aluminum or copper, having a thickness D, of approximate 50 microns and a layer of conductive or non-conductive adhesive 12 having a thickness D2 of approximate 30 microns evenly applied on the metal foil 11. Due to the construction and the manufacturing process of the conventional foil tape 1, a pre-prepared metal foil (e.g., aluminum or copper foil) must be provided in advance as it is exposed to air for a long period of time before it is manufactured into a completed foil tape, rendering the metal foil 11 oxidized on opposite sides thereof. This deteriorates the electrical conductivity of the foil tape. Otherwise, in order to prevent the metal foil from oxidation, it is necessary to proceed with an anti-oxidation treatment to the metal foil.
In order to maintain a desired tensile strength, the conventional foil tape 1 is thicker (generally 50 microns or more), so that the metal foil 11 will not be damaged or rigid, it adversely influences the capability of the foil tape to flex with the contour of the object to which it is applied. Since the conventional foil tape 1 requires thicker metal foil 11, the management, transportation and storage of the metal foil 11 is more complicated and costly, and the cost of manufacturing the foil tape is high.
Summary of the Invention
To solve the aforementioned problems, the primary objective of the present invention is to provide a conductive adhesive tape in which the thickness of the metal film and total thickness of the tape are reduced, thus reducing the occurrence of oxidation to the metal film, improving the flexibility of the tape and reducing the cost of manufacturing.
Specifically, the conductive adhesive tape of the present invention comprises a web of polyester film, a conductive metal film which is formed by vapor coating a conductive metal on a web of polyester film, and a conductive adhesive which is evenly applied on the metal film; whereby the web of polyester film provides sufficient tensile strength required by the tape, so that the thickness of the metal film and total thickness of the tape are significantly reduced, and so that the flexibility of the tape is improved. Since the metal film is interposed between a web of polyester film and conductive adhesive, it is insulated from the open air so that the anti oxidation and the electrically conductivity of the tape are improved.
The other objects, features, and functions of this invention will be better understood through the detailed description of the preferable embodiment of this invention accompanied by the following drawings.
Description of the Drawings
Fig. 1 is a schematic view showing the state of four separate foil tapes respectively applied on the periphery of a computer monitor or a TV screen; Fig. 2 is a schematic view showing the state that four elongated strips of foil tapes are applied on the periphery of a computer monitor or a TV screen; Fig. 3 is a schematic view showing the construction of a conventional foil tape; Fig. 4 is cross-sectional schematic view showing the construction of the conductive adhesive tape of one preferable embodiment of the present invention.
List of Reference Numerals 1 a conventional foil tape 11 a metal foil 12 a conductive adhesive 2 a conductive adhesive tape of the present invention 21 a web of polyester film 22 conductive metallic film coating 23 a conductive adhesive DI thickness of the metal foil of a conventional foil tape D2 thickness of the conductive adhesive of a conventional foil tape D3 thickness of the web of polyester film D4 thickness of the metal film coating Ds thickness of the conductive adhesive S a screen T foil tapes of conductive adhesive tapes Detailed Description of the Invention
Now, with reference to Fig. 4, one of the preferred embodiments of the conductive adhesive tape 2 in accordance with the present invention primarily comprises a web of polyester film 2 1, a conductive metal film 22 and a layer of conductive adhesive 23, wherein the polyester film 21 can be a web material made of polyethylene tere(phthalate) having first and second surfaces and a thickness D3 of 25 microns. The conductive metal film 22 (e.g. copper or aluminum film) formed by vapor coating or sputtering metallic material onto the second surface of the polyester film 2 1, having a thickness D4 approximately of 15 microns. The conductive adhesive 23 can be any conventional conductive adhesive. The adhesive is applied on the conductive metal film 22 of a thickness D5 of 30 microns.
Since the web of polyester film 21 (e.g., PET web) has good flexibility and tensile strength, it can provide the conductive adhesive tape 2 of the present invention with the strength essential to maintain the construction of the tape. Also, the conductive metal film 22 is directly coated on the second surface of the polyester flhn 21 by way of vapor coating, the conductive metal film 22, when coated on the polyester film substrate 2 1, has only one side exposed to the air. The conductive adhesive 23 is immediately applied on the conductive metal film 22 when the metal film 22 is formed by vapor coating, so that the conductive metal film 22 is interposed between the polyester film 21 and the conductive adhesive 23 to insulate the conductive metal film 22 from air. A large reduction of oxidation of the conductive metal film 22 therefore is achieved. In use, the surface of the conductive adhesive 23 can be directly applied between the objects to be electrically connected. Since the polyester film 21 covers the conductive metal film 22, it can protect the conductive metal film 22 from surface oxidation or corrosion when the conductive adhesive tape 23 is applied.
Since the polyester film 21 has good flexibility and tensile strength, the thickness of the conductive metal film 22 can be greatly reduced without decreasing the strength essential to the tape. The reduced thickness of the conductive metal film 22 increases the flexibility of the conductive adhesive tape 2 and greatly improves the tape's ability to conform to a contour of the surface of an object on which the tape is applied, without any occurrence of flagging at the corners of the tape 2.
Since the polyester web material (e.g., PET web) is much cheaper than metal foil, the present invention results in a reduction of raw materials and manufacturing costs. Further, in manufacturing, since the conductive adhesive can be immediately applied on the conductive metal film when the conductive metallic film is formed on the polyester web material by way of vapor coating, no anti-oxidation treatment is required to the conductive metal film, the need to manage and store metal foils is eliminated, and the cost of manufacturing is reduced.
Provided below is a Comparison Table between a Conductive Adhesive Tape in accordance with the preferable embodiment of the invention and the existing Foil Tape:
Item Existing Foil Tape Conductive Adhesive Tape of the Invention a Thickness (Backing) 0.05 mm (50 microns) 0.04 mm (40 microns) b Thickness (Total) 0.08 mm (80 microns) 0.07 mm (70 microns) c Adhesion to Steel 0.99 kg/in 1.05 kg/in d Contact Resistance 0.7 A 0.7 A c Flagging No No In conclusion, this invention apparently provides an improved conductive adhesive tape, so that the total thickness and the thickness of the conductive metal film are reduced, and so that the characteristic of anti-oxidation of the metal film and the flexibility of the tape are improved and the cost for manufacturing is reduced.
While representative embodiments and details have been shown for the purpose of illustrating the invention, they are not intended to limit the scope of the invention, which is limited only by the claims.
Claims (5)
1 A conductive adhesive tape, comprising: a web of polyester film having a first surface and a second surface; a conductive metal film which is directly coated on the second surface of the polyester film; and a layer of conductive adhesive which is applied onto the conductive metal film.
2. The conductive adhesive tape of Claim 1, wherein the polyester film is made of poly(ethylene terephthalate) web material having a thickness of 25 microns.
3. The conductive adhesive tape of Claim 1, wherein the conductive metal film is formed by an aluminum vapor coating on the second surface of the polyester film, and has a thickness of 15 microns.
4. The conductive adhesive tape of claim 1 comprising: a web of poly(ethylene terephthalate) film having a first surface and a second surface, and having a thickness of 25 microns; an aluminum. metal film directly vapor-coated on the second surface of the polyester film, and having a thickness of 15 microns; and a layer of conductive adhesive applied on the conductive metal film and having a thickness of 30 microns.
5. A conductive adhesive tape as claimed in Claim 1 substantially as herein described with reference to Figure 4 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW89204029 | 2000-03-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0103614D0 GB0103614D0 (en) | 2001-03-28 |
| GB2360228A true GB2360228A (en) | 2001-09-19 |
Family
ID=21665238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0103614A Withdrawn GB2360228A (en) | 2000-03-14 | 2001-02-14 | Conductive adhesive tape |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2001311063A (en) |
| DE (1) | DE10110394A1 (en) |
| GB (1) | GB2360228A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10231065A1 (en) * | 2002-03-22 | 2003-10-23 | Tesa Ag | Pressure sensitive adhesive tape and method of manufacture |
| SE0402471D0 (en) * | 2004-10-12 | 2004-10-12 | Anders Lundblad | Electrochemical device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0256756A2 (en) * | 1986-08-05 | 1988-02-24 | Minnesota Mining And Manufacturing Company | Electrically conductive tape |
| WO1995012301A1 (en) * | 1993-10-28 | 1995-05-04 | Brady Usa, Inc. | Dissipative cover tape for surface mount device packaging |
| US5676812A (en) * | 1990-03-24 | 1997-10-14 | Canon Kabushiki Kaisha | Electronic equipment with an adhesive member to intercept electromagnetic waves |
| JPH10145080A (en) * | 1996-11-08 | 1998-05-29 | Nitto Denko Corp | Electromagnetic shield tape and electromagnetic shield wire |
| GB2338911A (en) * | 1998-07-02 | 2000-01-12 | Samsung Display Devices Co Ltd | Conductive adhesive tape and CRT employing the same |
-
2001
- 2001-02-14 GB GB0103614A patent/GB2360228A/en not_active Withdrawn
- 2001-03-03 DE DE10110394A patent/DE10110394A1/en not_active Withdrawn
- 2001-03-13 JP JP2001070530A patent/JP2001311063A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0256756A2 (en) * | 1986-08-05 | 1988-02-24 | Minnesota Mining And Manufacturing Company | Electrically conductive tape |
| US5676812A (en) * | 1990-03-24 | 1997-10-14 | Canon Kabushiki Kaisha | Electronic equipment with an adhesive member to intercept electromagnetic waves |
| WO1995012301A1 (en) * | 1993-10-28 | 1995-05-04 | Brady Usa, Inc. | Dissipative cover tape for surface mount device packaging |
| JPH10145080A (en) * | 1996-11-08 | 1998-05-29 | Nitto Denko Corp | Electromagnetic shield tape and electromagnetic shield wire |
| GB2338911A (en) * | 1998-07-02 | 2000-01-12 | Samsung Display Devices Co Ltd | Conductive adhesive tape and CRT employing the same |
Non-Patent Citations (1)
| Title |
|---|
| PAJ abstract of JP10145080A * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10110394A1 (en) | 2001-09-20 |
| JP2001311063A (en) | 2001-11-09 |
| GB0103614D0 (en) | 2001-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6943288B1 (en) | EMI foil laminate gasket | |
| US11037703B2 (en) | Shielding tape with multiple foil layers | |
| US5434354A (en) | Independent twin-foil shielded data cable | |
| US4968854A (en) | Dual elastomer gasket shield for electronic equipment | |
| KR102293407B1 (en) | Electromagnetic shielding film, circuit board and manufacturing method of electromagnetic shielding film | |
| US20050039936A1 (en) | Electromagnetic wave shielding window, manufacturing apparatus having the same, transport system having the same, building construction having the same, and electromagnetic wave shielding method | |
| US5804762A (en) | EMI shielding gasket having shear surface attachments | |
| JP2020510985A (en) | Electromagnetic wave shielding film, its manufacturing method and application | |
| WO1995007600A2 (en) | Laminated shielding material and method for shielding an enclosure therewith | |
| JPH0282434A (en) | cathode ray tube | |
| JP3103597U (en) | Metal-coated fiber cloth for electromagnetic wave shielding | |
| JP2000090748A (en) | Cable with shield | |
| US20020142157A1 (en) | Electroconductive adhesive tape | |
| GB2360228A (en) | Conductive adhesive tape | |
| KR100267814B1 (en) | Conductive adhesive tape | |
| US20060199004A1 (en) | Electroconductive adhesive tape | |
| CN2616010Y (en) | Anti-electromagnetic wave coating structure improvement for flexible cables | |
| JP2006210763A (en) | EMI shielding filter for display | |
| JPH0745998Y2 (en) | Electromagnetic shielding laminate | |
| KR100278057B1 (en) | Conductive Adhesive Tape | |
| CN217849916U (en) | Composite film with insulation shielding function | |
| WO1995000327A1 (en) | Corrosion resistant emi shielding material | |
| JPH05304387A (en) | Flexible shielding sheet | |
| JPS6240138A (en) | cathode ray tube | |
| JP3065412B2 (en) | Electromagnetic wave shielding window |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |