# US 9,434,862 B2 · Pressure-sensitive adhesive for pressure-sensitive adhesive tape, tape cassette, and tape printer

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- Number: US 9,434,862 B2
- Document ID: US9434862B2
- Status: Granted
- Kind: B2
- Application number: 14/809,449
- Filed: 2015-07-27
- Published: 2015-11-19
- Granted: 2016-09-06
- Earliest claimed: 2011-10-07
- Assignees: Brother Kogyo Kabushiki Kaisha
- Applicants: Brother Kogyo Kabushiki Kaisha
- Inventors: Takahiro Norimatsu
- Web page: https://patentgrep.com/patent/US9434862B2

## CPC

- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 27/36: comprising polyesters
- B41J 2/32: using thermal heads
- B41J 2/325: by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet
- B41J 3/4075: {Tape printers; Label printers}
- B41J 15/044: {Cassettes or cartridges containing continuous copy material, tape, for setting into printing devices}
- C09J 7/20: characterised by their carriers
- C09J 7/255: {Polyesters}
- C09J 7/38: Pressure-sensitive adhesives [PSA]
- C09J 201/00: Adhesives based on unspecified macromolecular compounds
- B32B 2250/02: 2 layers
- B32B 2255/10: on synthetic resin layer or on natural or synthetic rubber layer
- B32B 2367/00: Polyesters, e.g. PET, i.e. polyethylene terephthalate
- B32B 2405/00: Adhesive articles, e.g. adhesive tapes
- C09J 2301/312: parameters being the characterizing feature
- C09J 2467/006: in the substrate
- Y10T 428/1476: Release layer
- Y10T 428/28: Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T 428/2848: Three or more layers
- Y10T 428/31786: Of polyester [e.g., alkyd, etc.]
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

There is provided a double-sided pressure-sensitive adhesive tape which includes a first pressure-sensitive adhesive layer formed by using any of different types of adhesive samples. Thereby the first pressure-sensitive adhesive layer is adjusted so as to satisfy conditions that, slow peel strength when a printing tape made of a PET film is peeled off from the substrate film of the double-sided pressure-sensitive adhesive tape by 5 mm at peel rate of 0.5 mm/minute is 0.45 N/20 mm or higher and storage modulus of the adhesive layer is in a range from 90.7 kPa to 435 kPa. By improving adhesiveness to the printing tape under environmental temperature from a low temperature to a normal temperature, the double-sided pressure-sensitive adhesive layer renders the printing tape less apt to peel off.

## Claims

### Claim 1

Adhesive for an adhesive tape, the adhesive being applied on a first surface of a substrate film of the adhesive tape so as to form a first adhesive layer which is stuck onto a polyethylene terephthalate film,
wherein the adhesive is adjusted so as to satisfy conditions that, a first double-sided adhesive tape, in which the first adhesive layer and a second adhesive layer formed by applying the adhesive on a second surface of the substrate film are provided, is used and a peeling length of the polyethylene terephthalate film from the first adhesive layer when the first double-sided adhesive tape is stuck around an outer circumference of a polypropylene tube having an outer diameter of φ6mm with an end portion of the first double-sided adhesive tape overlapped by approximately 5 mm is 1 mm or shorter, the polypropylene tube being stored for 24 hours under an environment of a temperature of 50 degrees C. and a humidity of 90%, and
wherein a storage modulus of the first adhesive layer is in a range lower than 435 kPa at 5 degrees C.

### Claim 2

An adhesive tape comprising:
a substrate film; and
adhesive being applied on a first surface of the substrate film so as to form a first adhesive layer onto which a polyethylene terephthalate film is stuck,
wherein the adhesive is adjusted so as to satisfy conditions that, a first double-sided adhesive tape, in which the first adhesive layer and a second adhesive layer formed by applying the adhesive on a second surface of the substrate film are provided, is used and a peeling length of the polyethylene terephthalate film from the first adhesive layer when the first double-sided adhesive tape is stuck around an outer circumference of a polypropylene tube having an outer diameter of φ6mm with an end portion of the first double-sided adhesive tape overlapped by approximately 5 mm is 1 mm or shorter, the polypropylene tube being stored for 24 hours under an environment of a temperature of 50 degrees C. and a humidity of 90%, and
wherein a storage modulus of the first adhesive layer is in a range lower than 435 kPa at 5 degrees C.

### Claim 3 (depends on 2)

The adhesive tape according to claim 2, wherein the second adhesive layer is formed by applying the adhesive on the second surface of the substrate film.

### Claim 4

Adhesive for an adhesive tape, the adhesive being applied on a first surface of a substrate film of the adhesive tape so as to form a first adhesive layer which is stuck onto a polyethylene terephthalate film,
wherein a number of peeling segments in each of which whole width of the polyethylene terephthalate film of a printed tape peeled-off from the first adhesive layer in a half cut portion when a tape cassette in which a second double-sided adhesive tape formed by adhering a release sheet on a second adhesive layer applied on a second surface, the polyethylene terephthalate film and an ink ribbon are assembled, is stored and kept for two hours under an environment of −5 degrees C., twenty half cuts are continuously provided at an interval of 20 mm while the printed tape is formed by adhering the first adhesive layer of the second double-sided adhesive tape to the polyethylene terephthalate film on which printing is conducted by the ink ribbon, and the number of peeling segments is immediately counted under the environment of 5 degrees C. is 10 or lower, and
wherein a storage modulus of the first adhesive layer is in a range higher than 90.7 kPa at 5 degrees C.

### Claim 5

An adhesive tape comprising:
a substrate film; and
adhesive being applied on a first surface of the substrate film so as to form a first adhesive layer onto which a polyethylene terephthalate film is stuck,
wherein a number of peeling segments in each of which whole width of the polyethylene terephthalate film of a printed tape peeled-off from the first adhesive layer in a half cut portion when a tape cassette in which a second double-sided adhesive tape formed by adhering a release sheet on a second adhesive layer applied on a second surface, the polyethylene terephthalate film and an ink ribbon are assembled, is stored and kept for two hours under an environment of −5 degrees C., twenty half cuts are continuously provided at an interval of 20 mm while the printed tape is formed by adhering the first adhesive layer of the second double-sided adhesive tape to the polyethylene terephthalate film on which printing is conducted by the ink ribbon, and the number of peeling segments is immediately counted under the environment of −5 degrees C. is 10 or lower, and
wherein a storage modulus of the first adhesive layer is in a range higher than 90.7 kPa at 5 degrees C.

### Claim 6 (depends on 5)

The adhesive tape according to claim 5, wherein the second adhesive layer is formed by applying the adhesive on the second surface of the substrate film.