EP0786695A1 - Packaging for photographic paper - Google Patents

Packaging for photographic paper Download PDF

Info

Publication number
EP0786695A1
EP0786695A1 EP97100410A EP97100410A EP0786695A1 EP 0786695 A1 EP0786695 A1 EP 0786695A1 EP 97100410 A EP97100410 A EP 97100410A EP 97100410 A EP97100410 A EP 97100410A EP 0786695 A1 EP0786695 A1 EP 0786695A1
Authority
EP
European Patent Office
Prior art keywords
layer
paper
flanges
leader
heat sealed
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
Application number
EP97100410A
Other languages
German (de)
French (fr)
Other versions
EP0786695B1 (en
Inventor
Helmut Wleklinski
Georg Fryda
Rene Degroeve
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Agfa Gevaert NV
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0786695A1 publication Critical patent/EP0786695A1/en
Application granted granted Critical
Publication of EP0786695B1 publication Critical patent/EP0786695B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C3/00—Packages of films for inserting into cameras, e.g. roll-films, film-packs; Wrapping materials for light-sensitive plates, films or papers, e.g. materials characterised by the use of special dyes, printing inks, adhesives

Definitions

  • Photographic paper is often used in the form of large rolls, the width of which corresponds to the width of the desired image format, e.g. 7, 10, 13 cm etc.
  • the rolls are packed light-tight.
  • they are usually placed in a cassette which is connected to the processing machine.
  • the paper roll must be inserted into the cassette while removing the packaging material in the dark.
  • the photo paper is wrapped on a round paper tube.
  • a round, opaque flange which corresponds to the size of the roll and has a round opening in the middle corresponding to the sleeve, is attached to the right and left and welded along its opening to the edge of the sleeve.
  • An opaque jacket is sealed to the end of the photo paper, wrapped around the photo paper and welded at its edges to the round edges of the flanges.
  • the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the case is pulled out of the cassette.
  • the cassette can then be docked to the copier and copying can begin.
  • the material for the flanges is made up of several layers:
  • an approximately 130 ⁇ m thick paper layer is provided as a support; This is followed by at least one black-colored layer as a light barrier, at least one aluminum layer as a vapor barrier, at least one layer that increases the puncture resistance and furthest away from the paper carrier a layer that enables welding to the jacket or the paper sleeve.
  • the layers following the paper together have e.g. a thickness of 120 ⁇ m.
  • the object of the invention was to avoid this disadvantage.
  • This object is achieved in that a e.g. 20 to 60 ⁇ m thick layer of a synthetic polymer is applied by extrusion.
  • This layer which is preferably made of polyethylene, gives the material a tension which prevents the flange from collapsing inwards.
  • the plastic layer is preferably 30 to 50 ⁇ m thick and consists of HDPE (high density poly ethylene).
  • a heat-resistant varnish is also applied to the polymer layer in order to prevent the polymer layer from melting when the flange and outer jacket are welded together.

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Packages (AREA)
  • Laminated Bodies (AREA)
  • Packaging Of Special Articles (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)

Abstract

Daylight packaging for photographic paper supplied in the form of large rolls having a width which corresponds with the format of the photographs to be printed, comprises a core sleeve onto which the photographic paper is wound; two circular side flanges heat sealed to the core sleeve to form a reel; and a leader attached at one end to the outer end of the paper and free at the other end, the leader being heat sealed to the side flanges at the outer periphery to seal the package. The side flanges have a multi-layer structure comprising a paper support e.g. about 130 mu m thick, at least one black-coloured layer as light barrier, at least one aluminium layer as vapour barrier, at least one layer serving to increase the resistance to puncturing, at least one layer furthest separated from the paper support to enable the flanges to be heat sealed to the leader and to the core sleeve, and on the other side of the paper support, a layer of a synthetic resin applied by extrusion which imparts a tension to the material to prevent the flanges collapsing inwards.

Description

Fotografisches Papier wird häufig in Form großer Rollen verwendet, deren Breite der Breite des gewünschten Bildformates entspricht, z.B. 7, 10, 13 cm usw. Die Rollen sind lichtdicht verpackt. Um sie verwenden zu können, werden sie üblicherweise in eine Kassette eingelegt, die an die Verarbeitungsmaschine angeschlossen wird. Um jede Vorbelichtung zu vermeiden, auch an den Bildkanten, muß das Einlegen der Papierrolle in die Kassette unter Entfernung des Verpackungsmaterials im Dunkeln vorgenommen werden.Photographic paper is often used in the form of large rolls, the width of which corresponds to the width of the desired image format, e.g. 7, 10, 13 cm etc. The rolls are packed light-tight. In order to be able to use them, they are usually placed in a cassette which is connected to the processing machine. To avoid any pre-exposure, even at the edges of the picture, the paper roll must be inserted into the cassette while removing the packaging material in the dark.

Das Einlegen der Papierrolle in die Kassette im Dunkeln ist lästig, fehleranfällig und oft, z.B. bei sogenannten Minilabs nicht möglich, weil diese Verarbeitungsmaschinen mit geringer Kapazität häufig dort aufgestellt sind, wo es in der unmittelbaren Umgebung keine verdunkelbaren Räume gibt.Inserting the paper roll into the cassette in the dark is annoying, prone to errors and often, e.g. not possible with so-called minilabs, because these processing machines with small capacities are often installed where there are no black-out rooms in the immediate vicinity.

Um diesem Mangel abzuhelfen, ist eine Tageslichtverpackung (DLL von "daylight-loading") entwickelt worden, bei der die Rolle mitsamt Verpackungsmaterial in die Kassette eingelegt wird. Diese Verpackung ist wie folgt gestaltet:In order to remedy this deficiency, a daylight packaging (DLL from "daylight-loading") has been developed, in which the roll together with the packaging material is inserted into the cassette. This packaging is designed as follows:

Das Fotopapier ist auf eine runde Papierhülse gewickelt. Jeweils rechts und links wird ein in der Größe mit der Rollengröße korrespondierender runder, lichtundurchlässiger Flansch, der in der Mitte eine mit der Hülse korrespondierende runde Öffnung hat, angebracht und entlang seiner Öffnung mit dem Hülsenrand verschweißt. Eine lichtundurchlässige Mantelallonge wird an das Ende des Fotopapiers gesiegelt, um das Fotopapier gewickelt und an ihren Kanten mit den runden Kanten der Flansche verschweißt.The photo paper is wrapped on a round paper tube. A round, opaque flange, which corresponds to the size of the roll and has a round opening in the middle corresponding to the sleeve, is attached to the right and left and welded along its opening to the edge of the sleeve. An opaque jacket is sealed to the end of the photo paper, wrapped around the photo paper and welded at its edges to the round edges of the flanges.

Beim Einlegen in die Kassette wird so verfahren, daß das freie Ende der Mantelallonge aus dem Kassettenmaul ragt.When inserting it into the cassette, proceed in such a way that the free end of the outer jacket protrudes from the cassette mouth.

Nach dem Einlegen in die Kassette wird die Mantelallonge durch Ziehen an dem aus der Öffnung der Kassette herausragenden Ende der Mantelallonge von den Flanschen an den Schweißnähten gelöst und aus der Kassette gezogen. Sodann kann die Kassette an die Kopiervorrichtung angedockt und mit dem Kopieren begonnen werden.After inserting it into the cassette, the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the outer side of the case is pulled out of the cassette. The cassette can then be docked to the copier and copying can begin.

Das Material für die Flansche ist aus mehreren Schichten aufgebaut:The material for the flanges is made up of several layers:

Außen ist z.B. eine etwa 130 µm starke Papierschicht als Träger vorgesehen; es folgen wenigstens eine schwarzeingefärbte Schicht als Lichtsperre, wenigstens eine Aluminiumschicht als Dampfsperre, wenigstens eine Schicht, die den Durchstoßwiderstand erhöht und am weitesten vom Papierträger entfernt eine Schicht, die das Verschweißen mit der Mantelallonge bzw. mit der Papierhülse ermöglicht. Die auf das Papier folgenden Schichten haben zusammen z.B. eine Stärke von 120 µm.Outside is e.g. an approximately 130 µm thick paper layer is provided as a support; This is followed by at least one black-colored layer as a light barrier, at least one aluminum layer as a vapor barrier, at least one layer that increases the puncture resistance and furthest away from the paper carrier a layer that enables welding to the jacket or the paper sleeve. The layers following the paper together have e.g. a thickness of 120 µm.

Diese Verpackung erfüllt zwar alle Forderungen nach leichter Handhabbarkeit, Lichtdichtigkeit und Widerstandsfähigkeit gegen das Durchstoßen, zeigt aber einen gravierenden Nachteil, denn bei bestimmten Belichtungsmaschinen (Printern) fallen, wenn das Fotopapier weitgehend abgerollt ist, die äußeren Bereiche der Flansche nach innen und werden beim Rückspulen des Fotopapiers mit eingewickelt. Abgesehen von möglichen Schädigungen wird dadurch der Wickeldurchmesser der Fotopapierrollen größer als es der zugehörigen Papierlänge entspricht. Bei Printern mit einer Restlängenbestimmung werden dann fehlerhafte Restlängen gemeldet.Although this packaging fulfills all requirements for easy handling, light tightness and resistance to puncturing, it shows a serious disadvantage, because with certain exposure machines (printers), when the photo paper is largely unrolled, the outer areas of the flanges fall inwards and become rewound of the photo paper wrapped with. Apart from possible damage, the winding diameter of the photo paper rolls is larger than the corresponding paper length. In the case of printers with a remaining length determination, incorrect remaining lengths are then reported.

Aufgabe der Erfindung war, diesen Nachteil zu vermeiden.The object of the invention was to avoid this disadvantage.

Diese Aufgabe wird dadurch gelöst, daß außen auf den Papierträger der Flansche eine z.B. 20 bis 60 µm starke Schicht eines synthetischen Polymers durch Extrusion aufgebracht wird. Diese vorzugsweise aus Polyethylen bestehende Schicht verleiht dem Material eine Spannung, die verhindert, daß der Flansch nach innen einfällt.This object is achieved in that a e.g. 20 to 60 µm thick layer of a synthetic polymer is applied by extrusion. This layer, which is preferably made of polyethylene, gives the material a tension which prevents the flange from collapsing inwards.

Vorzugsweise ist die Kunststoffschicht 30 bis 50 µm stark und besteht aus HDPE (high density poly ethylene).The plastic layer is preferably 30 to 50 μm thick and consists of HDPE (high density poly ethylene).

In einer bevorzugten Ausführungsform wird auf die Polymerschicht noch ein hitzebeständiger Lack aufgetragen, um ein Schmelzen der Polymerschicht beim Verschweißen von Flansch und Mantelallonge zu verhindern.In a preferred embodiment, a heat-resistant varnish is also applied to the polymer layer in order to prevent the polymer layer from melting when the flange and outer jacket are welded together.

Claims (3)

Tageslichtverpackung für fotografisches Papier in Form von Rollen bestehend aus seitlichen kreisförmigen Flanschen und einer mit den Flanschen verschweißten Mantelallonge, die an einem Ende mit dem Anfang der Papierrolle verbunden und am anderen Ende frei ist, wobei die Flansche ein konzentrisches, kreisförmiges Loch aufweisen, dessen Rand mit dem Rand der Rollenhülse verschweißt ist und die auf einer Seite eines Papierträgers wenigstens eine schwarz eingefärbte Schicht als Lichtsperre, wenigstens eine Aluminiumschicht als Dampfsperre, wenigstens eine Schicht, die den Durchstoßwiderstand erhöht und am weitestens vom Papierträger entfernt eine Schicht aufweist, die das Verschweißen mit der Mantelallonge und der Rollenhülse ermöglicht, dadurch gekennzeichnet, daß auf der anderen Seite des Papierträgers eine Schicht eines synthetischen Polymers durch Extrusion aufgebracht ist, die dem Material eine Spannung verleiht, die ein nach innen Fallen des Flansches (von der Rolle aus gesehen) verhindert.Daylight packaging for photographic paper in the form of rolls consisting of circular flanges on the sides and a shell-length that is welded to the flanges, which is connected at one end to the beginning of the paper roll and is free at the other end, the flanges having a concentric, circular hole, the edge of which is welded to the edge of the roll sleeve and which has at least one black-colored layer on one side of a paper carrier as a light barrier, at least one aluminum layer as a vapor barrier, at least one layer that increases the puncture resistance and, most distant from the paper carrier, has a layer that welds with the jacket and the roller sleeve enables, characterized in that on the other side of the paper carrier a layer of a synthetic polymer is applied by extrusion, which gives the material a tension that prevents the flange from falling inwards (from the roller a us seen) prevented. Tageslichtverpackung nach Anspruch 1, dadurch gekennzeichnet, daß die Polymerschicht 20 bis 60 µm stark ist und aus Polyethylen besteht.Daylight packaging according to claim 1, characterized in that the polymer layer is 20 to 60 µm thick and consists of polyethylene. Tageslichtverpackung nach Anspruch 1, dadurch gekennzeichnet, daß auf die Polymerschicht ein hitzebeständiger Lack aufgetragen ist.Daylight packaging according to claim 1, characterized in that a heat-resistant lacquer is applied to the polymer layer.
EP97100410A 1996-01-25 1997-01-13 Packaging for photographic paper Expired - Lifetime EP0786695B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19602526 1996-01-25
DE19602526A DE19602526A1 (en) 1996-01-25 1996-01-25 Packaging for photographic material

Publications (2)

Publication Number Publication Date
EP0786695A1 true EP0786695A1 (en) 1997-07-30
EP0786695B1 EP0786695B1 (en) 2000-12-06

Family

ID=7783581

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97100410A Expired - Lifetime EP0786695B1 (en) 1996-01-25 1997-01-13 Packaging for photographic paper

Country Status (4)

Country Link
US (1) US5775501A (en)
EP (1) EP0786695B1 (en)
JP (1) JPH09211789A (en)
DE (2) DE19602526A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921436A1 (en) * 1997-12-04 1999-06-09 Agfa-Gevaert N.V. A light-tight packgage for a roll of light-sensitive material
EP0971263A1 (en) * 1998-07-10 2000-01-12 Agfa-Gevaert AG Light-tight package for photosensitive strip material
US6048676A (en) * 1997-12-04 2000-04-11 Agfa-Gevaert Light-tight package for a roll of light-sensitive material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2797804A (en) * 1955-01-27 1957-07-02 Eastman Kodak Co Light-and moistureproof protection for rolls of light-sensitive photographic material
FR1290447A (en) * 1960-04-22 1962-04-13 Gevaert Photo Prod Nv Separator tapes for photographic plates
DE3627981A1 (en) * 1985-08-19 1987-02-26 Fuji Photo Film Co Ltd EASY-TO-OPEN PACKING MATERIAL FOR PHOTOGRAPHIC PHOTO-SENSITIVE MATERIALS
EP0350093A1 (en) * 1988-07-08 1990-01-10 Agfa-Gevaert N.V. Packaged rolled web of light-sensitive material and method of packaging same
EP0444611A2 (en) * 1990-02-26 1991-09-04 Fuji Photo Film Co., Ltd. Package for photographic film cartridge

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH052239A (en) * 1991-02-20 1993-01-08 Konica Corp Magazine for roll-state photosensitive material
JP3223257B2 (en) * 1991-03-27 2001-10-29 株式会社フェローテック Manufacturing method of thermoelectric conversion module
US5161685A (en) * 1991-07-31 1992-11-10 Eastman Kodak Company Flexible light-tight enclosure for photosensitive web roll
JP3042812B2 (en) * 1993-01-18 2000-05-22 富士写真フイルム株式会社 Rolled photosensitive material package and manufacturing method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2797804A (en) * 1955-01-27 1957-07-02 Eastman Kodak Co Light-and moistureproof protection for rolls of light-sensitive photographic material
FR1290447A (en) * 1960-04-22 1962-04-13 Gevaert Photo Prod Nv Separator tapes for photographic plates
DE3627981A1 (en) * 1985-08-19 1987-02-26 Fuji Photo Film Co Ltd EASY-TO-OPEN PACKING MATERIAL FOR PHOTOGRAPHIC PHOTO-SENSITIVE MATERIALS
EP0350093A1 (en) * 1988-07-08 1990-01-10 Agfa-Gevaert N.V. Packaged rolled web of light-sensitive material and method of packaging same
EP0444611A2 (en) * 1990-02-26 1991-09-04 Fuji Photo Film Co., Ltd. Package for photographic film cartridge

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
H.CORNELISSEN ET AL.: "Roll package", RESEARCH DISCLOSURE, vol. 229, no. 32, 10 May 1983 (1983-05-10), HAVANT GB, pages 190, XP002029731 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0921436A1 (en) * 1997-12-04 1999-06-09 Agfa-Gevaert N.V. A light-tight packgage for a roll of light-sensitive material
US6048676A (en) * 1997-12-04 2000-04-11 Agfa-Gevaert Light-tight package for a roll of light-sensitive material
EP0971263A1 (en) * 1998-07-10 2000-01-12 Agfa-Gevaert AG Light-tight package for photosensitive strip material
US6095330A (en) * 1998-07-10 2000-08-01 Agfa-Gevaert N.V. Light-tight packaging entity for strip-shaped light sensitive material

Also Published As

Publication number Publication date
EP0786695B1 (en) 2000-12-06
DE19602526A1 (en) 1997-07-31
US5775501A (en) 1998-07-07
JPH09211789A (en) 1997-08-15
DE59702697D1 (en) 2001-01-11

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