WO2000015726A1 - Tape for connecting photographic films to be developed and a method for the manufacture thereof - Google Patents

Tape for connecting photographic films to be developed and a method for the manufacture thereof Download PDF

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Publication number
WO2000015726A1
WO2000015726A1 PCT/NL1999/000570 NL9900570W WO0015726A1 WO 2000015726 A1 WO2000015726 A1 WO 2000015726A1 NL 9900570 W NL9900570 W NL 9900570W WO 0015726 A1 WO0015726 A1 WO 0015726A1
Authority
WO
WIPO (PCT)
Prior art keywords
polyester film
water
adhesive
proof paper
heatseal
Prior art date
Application number
PCT/NL1999/000570
Other languages
French (fr)
Inventor
Teunis De Gast
Original Assignee
Techn-O-Tape B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Techn-O-Tape B.V. filed Critical Techn-O-Tape B.V.
Publication of WO2000015726A1 publication Critical patent/WO2000015726A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
    • G03D13/003—Film feed or extraction in development apparatus
    • G03D13/005—Extraction out of a cassette and splicing of the film before feeding in a development apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B32B2307/7265—Non-permeable
    • 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
    • B32B2559/00—Photographic equipment or accessories
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/20—Presence of organic materials
    • C09J2400/28—Presence of paper
    • C09J2400/283—Presence of paper 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

Definitions

  • the present invention relates to a tape for connecting photographic films to be developed, which tape comprises water-proof paper bonded with a first side thereof to a first side of a polyester film, the water- proof paper is on a second side provided with heatseal adhesive, and at substantially regular intervals unique identification codes are printed on the tape.
  • Such a tape is well-known in the art. Photographic films sent to a film processing laboratory come from a large number of people who want to be certain that the film they get back is their own film. To this end the films are provided with a piece of tape carrying a unique identification code.
  • the tape has to meet a multitude of requirements. The most important ones relate to the ten- sile and tear strength, resistance to water and chemicals, temperature resistance and good readability of the code applied which may be, for example, a bar code.
  • the second side of the water-proof paper is printed by means of a laser printer. This tape is provided with a transparent polyester film which improves the strength properties.
  • the known tape has the disadvantage that the readability may leave something to be desired.
  • the object of the present invention is to provide a tape with improved readability.
  • the method mentioned in the preamble is characterized in that the polyester film has good light scattering properties, and on its second side the polyester film carries a print of thermotransfer ink.
  • the use of a printable, strongly light-scattering polyester film instead of a transparent polyester film, has been found to result in improved readability of the code. For the film processing laboratories where daily very large numbers of films are developed, this is very important since any delay is a set-back for the competi- tive position, and unreadable codes render the return of the film to the customer more difficult.
  • the polyester is strongly light-diffusing due to the presence of pig- ment, which is preferably titanium oxide, in the polyether film.
  • polyester film and the waterproof paper are bonded by means of a pressure sensitive adhesive.
  • Such a bond is relatively cheap and reliable.
  • Other manners of bonding are also possible, such as using a heatseal adhesive or co-extrusion.
  • the polyester film is provided at the second side with an agent to limit tacking to the heatseal adhesive.
  • the invention also relates to two methods of manufacturing tape according to the invention for splicing photographic films to be processed, which method comprises bonding a first side of water-proof paper with a first side of a polyester film, applying a heatseal adhesive to a second side of the water-proof paper, and printing with an ink.
  • the polyester film used is a strongly light-diffusing polyester film and
  • a first step comprised of a first and a second stage
  • the first stage involves the application of the heatseal adhesive to the second side of the water-proof paper
  • the second stage involves the provision of at least one of i) the first side of the paper provided with heatseal adhesive; and ii) the first side of the strongly light-diffusing polyester film, whose second side may or may not already have been provided with unique identifica- tion codes of thermotransfer ink, is provided with a pressure sensitive adhesive
  • the first side of the waterproof paper and the first side of the polyester film are bonded by means of the pressure-sensitive adhesive, after which, if this is not already done, the second side of the polyester film is provided with the unique identification codes of thermotransfer ink.
  • the first stage may take place before, after or during the second stage.
  • thermotransfer ink are applied on the second side of the polyester film, after the polyester film and the water-proof paper are bonded.
  • the second side of the polyester film is provided with a coating that limits its adherence to the heatseal adhesive.
  • the polyester film used is a strongly light-diffusing poly- ester film
  • thermotransfer ink at least one of i) the first side of the water-proof paper; and ii) the first side of the strongly light-diffusing polyester film whose second side may or may not already have been provided with unique identification codes of thermotransfer ink, is provided with a pressure-sensitive adhesive, and the first side of the water-proof paper and the first side of the polyester film are bonded by means of the pressure-sensitive adhes- ive ; and in a second step the second side of the water-proof paper is provided with heatseal adhesive; after which the second side of the polyester film, if this is not already done, is provided with the unique identification codes of thermotransfer ink.
  • This method makes it possible to maintain a stock of laminate of water-proof paper and polyester, and/or to have it provided with a heatseal adhesive on another location. Additional favourable embodiments of this variant and their advantages have already been described above for the first variant.
  • the resulting tape was cut to widths of 19 and 25 mm.
  • thermotransfer printer Zebraprinter 90 xill, Willet,
  • thermotransfer ink TK- FB-R-0028375-00-A, T&K Strichcode service GmbH, Bielefeld, Germany
  • the tape can be applied without problems at the temperature and pressure commonly used for heatseal adhesive (170°C (which temperature has been selected from a range of 120-200°C) ) and pressure (4-7 atm for 1 sec. ) ) .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laminated Bodies (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)

Abstract

The present invention relates to a printed tape for connecting photographic films. The tape according to the invention comprises a strongly light-diffusing polyester film on water-proof paper. The polyester film is printed with thermotransfer ink. The invention further relates to two methods of manufacturing the printed tape.

Description

Tape for connecting photograpnic films to be developed and a method for the manufacture thereof
The present invention relates to a tape for connecting photographic films to be developed, which tape comprises water-proof paper bonded with a first side thereof to a first side of a polyester film, the water- proof paper is on a second side provided with heatseal adhesive, and at substantially regular intervals unique identification codes are printed on the tape.
Such a tape is well-known in the art. Photographic films sent to a film processing laboratory come from a large number of people who want to be certain that the film they get back is their own film. To this end the films are provided with a piece of tape carrying a unique identification code. The tape has to meet a multitude of requirements. The most important ones relate to the ten- sile and tear strength, resistance to water and chemicals, temperature resistance and good readability of the code applied which may be, for example, a bar code. With the known tape, the second side of the water-proof paper is printed by means of a laser printer. This tape is provided with a transparent polyester film which improves the strength properties.
The known tape has the disadvantage that the readability may leave something to be desired.
The object of the present invention is to provide a tape with improved readability.
To this end the method mentioned in the preamble is characterized in that the polyester film has good light scattering properties, and on its second side the polyester film carries a print of thermotransfer ink. The use of a printable, strongly light-scattering polyester film instead of a transparent polyester film, has been found to result in improved readability of the code. For the film processing laboratories where daily very large numbers of films are developed, this is very important since any delay is a set-back for the competi- tive position, and unreadable codes render the return of the film to the customer more difficult.
According to a favourable embodiment, the polyester is strongly light-diffusing due to the presence of pig- ment, which is preferably titanium oxide, in the polyether film.
Thus this is a simple and relatively cheap manner of obtaining a high contrast between printed and unprinted parts on the second side of the polyester film. Conveniently, the polyester film and the waterproof paper are bonded by means of a pressure sensitive adhesive.
Such a bond is relatively cheap and reliable. Other manners of bonding are also possible, such as using a heatseal adhesive or co-extrusion.
Preferably the polyester film is provided at the second side with an agent to limit tacking to the heatseal adhesive.
This makes it easy to unroll the tape after having been rolled up, and eliminates the danger of the codes that are printed on the polyester film coming off.
The invention also relates to two methods of manufacturing tape according to the invention for splicing photographic films to be processed, which method comprises bonding a first side of water-proof paper with a first side of a polyester film, applying a heatseal adhesive to a second side of the water-proof paper, and printing with an ink.
According to a first variant the polyester film used is a strongly light-diffusing polyester film and
- in a first step, comprised of a first and a second stage, the first stage involves the application of the heatseal adhesive to the second side of the water-proof paper, and the second stage involves the provision of at least one of i) the first side of the paper provided with heatseal adhesive; and ii) the first side of the strongly light-diffusing polyester film, whose second side may or may not already have been provided with unique identifica- tion codes of thermotransfer ink, is provided with a pressure sensitive adhesive, and
- in a second step, the first side of the waterproof paper and the first side of the polyester film are bonded by means of the pressure-sensitive adhesive, after which, if this is not already done, the second side of the polyester film is provided with the unique identification codes of thermotransfer ink.
This method is very convenient if the devices for applying the heatseal adhesive and the pressure-sensitive adhesive are situated on the same location. The first stage may take place before, after or during the second stage.
One embodiment that will be employed most frequent- ly in practice, is characterized in that the identification codes of thermotransfer ink are applied on the second side of the polyester film, after the polyester film and the water-proof paper are bonded.
This means that differing demands for the tape can be accommodated by having unprinted tape in stock. That is to say that, although the apparatus for printing is not always utilized to the full, the devices for the application of adhesives can be exploited more fully.
According to a favourable embodiment, the second side of the polyester film is provided with a coating that limits its adherence to the heatseal adhesive.
This makes it easy to unroll the tape after having been rolled up, and eliminates the danger of the codes that are printed on the polyester film coming off. The application of the agent does not hinder subsequent printing with thermotransfer ink, because the latter is able to penetrate the coating agent.
According to a second variant of the method, the polyester film used is a strongly light-diffusing poly- ester film and
- in a first step, at least one of i) the first side of the water-proof paper; and ii) the first side of the strongly light-diffusing polyester film whose second side may or may not already have been provided with unique identification codes of thermotransfer ink, is provided with a pressure-sensitive adhesive, and the first side of the water-proof paper and the first side of the polyester film are bonded by means of the pressure-sensitive adhes- ive ; and in a second step the second side of the water-proof paper is provided with heatseal adhesive; after which the second side of the polyester film, if this is not already done, is provided with the unique identification codes of thermotransfer ink.
This method makes it possible to maintain a stock of laminate of water-proof paper and polyester, and/or to have it provided with a heatseal adhesive on another location. Additional favourable embodiments of this variant and their advantages have already been described above for the first variant.
The invention will now be elucidated by means of an exemplary embodiment. Printable polyester film (Petwhite crisper, Lintec, Amsterdam, the Netherlands) having a thickness of 50 μm was provided with a pressure-sensitive adhesive (P5, Lintec) at approximately 18 g/m2 and applied to waterproof paper (CP Papers, Alpha, New Jersey, USA) having a thickness of 125 μm. The water-proof paper was then provided with a coating of 25 g/m2 of a black heatseal adhesive (paper with adhesive is available as RD547 from PPI, Waterford, Ireland) . In the same processing track the polyester film was provided with a release agent on sili- cone basis (PPI) .
The resulting tape was cut to widths of 19 and 25 mm.
Despite the presence of the release agent, it was possible to print on the polyester film by means of a thermotransfer printer (Zebraprinter 90 xill, Willet,
Schiedam, the Netherlands) using thermotransfer ink (TK- FB-R-0028375-00-A, T&K Strichcode service GmbH, Bielefeld, Germany) . The result was a printed film which, after assessment according to the NEN standard using an appar- atus generally known in the art, showed an improved readability due to the increased contrast between printed and unprinted parts.
It was shown that the tape can be applied without problems at the temperature and pressure commonly used for heatseal adhesive (170°C (which temperature has been selected from a range of 120-200°C) ) and pressure (4-7 atm for 1 sec. ) ) .

Claims

1. A tape for connecting photographic films to be developed, which tape comprises water-proof paper bonded with a first side thereof to a first side of a polyester film, the water-proof paper is on a second side provided with heatseal adhesive, and at substantially regular intervals unique identification codes are printed on the tape, characterized in that the polyester film is by nature a good diffuser of light, and on its second side the polyester film carries a print of thermotransfer ink.
2. A tape according to claim 1, characterized in that the polyester is strongly light-diffusing due to the presence of pigment .
3. A tape according to claim 2, characterized in that the pigment is titanium oxide, in the polyether film.
4. A tape according to one of the preceding claims, characterized in that the polyester film and the water- proof paper are bonded by means of a pressure sensitive adhesive.
5. A tape according to one of the preceding claims, characterized in that the polyester film is provided at the second side with an agent to limit tacking to the heatseal adhesive.
6. A method of manufacturing tape according to the invention for splicing photographic films to be processed, which method comprises bonding a first side of water-proof paper with a first side of a polyester film, applying a heatseal adhesive to a second side of the water-proof paper, and printing with an ink, characterized in that the polyester film used is a strongly light-diffusing polyester film and
- in a first step, comprised of a first and a sec- ond stage, the first stage involves the application of the heatseal adhesive to the second side of the water-proof paper, and the second stage involves the provision of at least one of i) the first side of the paper provided with heatseal adhesive; and ii) the first side of the strongly light-diffusing polyester film, whose second side may or may not already have been provided with unique identification codes of thermotransfer ink, is provided with a pressure sensitive adhesive, and - in a second step, the first side of the waterproof paper and the first side of the polyester film are bonded by means of the pressure-sensitive adhesive, after which, if this is not already done, the second side of the polyester film is provided with the unique identi- fication codes of thermotransfer ink.
7. A method according to claim 6, characterized in that the identification codes of thermotransfer ink are applied on the second side of the polyester film, after the polyester film and the water-proof paper are bonded.
8. A method according to claim 6 or 7, characterized in that the second side of the polyester film is provided with a coating that limits its adherence to the heatseal adhesive.
9. A method of manufacturing tape for splicing pho- tographic films to be processed, which method comprises bonding a first side of water-proof paper with a first side of a polyester film, applying a heatseal adhesive to a second side of the water-proof paper, and printing with an ink, characterized in that the polyester film used is a strongly light-di fusing poly-ester film and
- in a first step, at least one of i) the first side of the water-proof paper; and ii) the first side of the strongly light-diffusing polyester film whose second side may or may not already have been provided with unique identification codes of thermotransfer ink, is provided with a pressure-sensitive adhesive, and the first side of the water-proof paper and the first side of the polyester film are bonded by means of the pressure-sensitive adhesive ,- and in a second step the second side of the water-proof paper is provided with heatseal adhesive; after which the second side of the polyester film, if this is not yet done, is provided with the unique identification codes of thermotransfer ink.
10. A method according to claim 9, characterized in that the identification codes of thermotransfer ink are applied on the second side of the polyester film, after the polyester film and the water-proof paper are bonded, i 11. A method according to claim 9 or 10, characterized in that the second side of the polyester film is provided with a coating that limits its adherence to the heatseal adhesive.
PCT/NL1999/000570 1998-09-15 1999-09-14 Tape for connecting photographic films to be developed and a method for the manufacture thereof WO2000015726A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1010093 1998-09-15
NL1010093A NL1010093C2 (en) 1998-09-15 1998-09-15 Tape for joining photographic films to be developed and method for their manufacture.

Publications (1)

Publication Number Publication Date
WO2000015726A1 true WO2000015726A1 (en) 2000-03-23

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ID=19767817

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1999/000570 WO2000015726A1 (en) 1998-09-15 1999-09-14 Tape for connecting photographic films to be developed and a method for the manufacture thereof

Country Status (2)

Country Link
NL (1) NL1010093C2 (en)
WO (1) WO2000015726A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06266060A (en) * 1993-03-11 1994-09-22 Fuji Photo Film Co Ltd Adhesive tape for photographic film after development, and joining and peeling method using the same
EP0721149A1 (en) * 1995-01-09 1996-07-10 Eastman Kodak Company Method for communicating scene orientation of camera film to photo finishing equipment
EP0823466A2 (en) * 1996-08-08 1998-02-11 Gilbert Bloch Paper film laminate for adhesive tape

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06266060A (en) * 1993-03-11 1994-09-22 Fuji Photo Film Co Ltd Adhesive tape for photographic film after development, and joining and peeling method using the same
EP0721149A1 (en) * 1995-01-09 1996-07-10 Eastman Kodak Company Method for communicating scene orientation of camera film to photo finishing equipment
EP0823466A2 (en) * 1996-08-08 1998-02-11 Gilbert Bloch Paper film laminate for adhesive tape

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 9443, Derwent World Patents Index; Class A89, AN 94-344266, XP002100311 *

Also Published As

Publication number Publication date
NL1010093C2 (en) 2000-03-17

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