EP0738916A1 - Lichtdicht verpackte lichtempfindliche Filmrolle - Google Patents

Lichtdicht verpackte lichtempfindliche Filmrolle Download PDF

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Publication number
EP0738916A1
EP0738916A1 EP96200862A EP96200862A EP0738916A1 EP 0738916 A1 EP0738916 A1 EP 0738916A1 EP 96200862 A EP96200862 A EP 96200862A EP 96200862 A EP96200862 A EP 96200862A EP 0738916 A1 EP0738916 A1 EP 0738916A1
Authority
EP
European Patent Office
Prior art keywords
rims
lighttightly
roll
cover
packaged
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
EP96200862A
Other languages
English (en)
French (fr)
Other versions
EP0738916B1 (de
Inventor
Dirk Peeters
Danny Van Geyte
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 NV
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 NV filed Critical Agfa Gevaert NV
Priority to EP19960200862 priority Critical patent/EP0738916B1/de
Publication of EP0738916A1 publication Critical patent/EP0738916A1/de
Application granted granted Critical
Publication of EP0738916B1 publication Critical patent/EP0738916B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/67—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material
    • B65D85/671—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form
    • B65D85/672—Containers, packaging elements or packages, specially adapted for particular articles or materials for web or tape-like material wound in flat spiral form on cores
    • 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

  • the present invention relates to a lighttightly packaged roll of light-sensitive strip material wound on a hollow supporting core, and more in particular to such roll which is intended for daylight loading of a dispenser magazine which, after its loading, can be placed in a suitable exposure apparatus, e.g. a phototypesetter or a COM (computer output microfilm) system.
  • a suitable exposure apparatus e.g. a phototypesetter or a COM (computer output microfilm) system.
  • Lighttightly packaged rolls of light-sensitive strip material wound on a hollow supporting core comprise a lighttight flexible end cover for each end surface of the roll, each end cover having a central opening and being lighttightly attached to a corresponding end of the core, a lighttight flexible circumferential cover secured to the coiled strip material and covering the outermost convolution of the roll.
  • Corresponding ends of end covers and circumferential cover are lighttightly fitted to each other so as to obtain a lighttight and/or moisture-tight wrapping. Examples of this kind of wrapping are disclosed in US-A 4 148 395 and 4 505 387.
  • An improved roll packaging which overcomes problems with dimensional tolerances of the roll of wound strip material is disclosed in US-A 4 733 777.
  • the latter roll package comprises a lighttight flexible end cover for each end surface of the roll, each end cover having a diameter in excess of the diameter of the roll of wound material, and a lighttight flexible circumferential cover having a width in excess of the width of the strip material.
  • the inside faces of the rims of the circumferential cover are sealed to the corresponding inside faces of the rims of the end covers extending beyond the perimeter of the roll of wound strip material.
  • a roll package as described is supported between two rigid flanges having a hub engaging the corresponding core opening, and the roll thus supported is packed in a rectangular cardboard box for storage and shipping.
  • Contact of the flanges with the sealed rims of the wrapping material locates said rims in parallel planes, normal to the axis of the roll. Since the flanges have a diameter, or circumscribe a diameter if they are rectangular, which is larger than the diameter of the rims in their normal planes, there is no contact between the edges of the rims and the adjacent walls of the packaging box.
  • the flanges which usually are made of a hard plastic such as polystyrene or polyvinyl chloride, are considered as an undesirable load.
  • a lighttightly packaged roll of light-sensitive strip material wound on a hollow supporting core which comprises a lighttight flexible end cover for each end surface of the roll, each end cover having a central opening and being lighttightly attached to a corresponding end of the core and each end cover further having a diameter in excess of the diameter of the roll of wound material, and a lighttight flexible circumferential cover secured to the coiled strip material and covering the outermost convolution thereof, said circumferential cover having a width in excess of the width of the strip material, the inside faces of the rims of the circumferential cover being fitted to the corresponding inside faces of the rims of the end covers extending beyond the perimeter of the roll of wound strip material, is characterized thereby that the fitted rims of the lighttight wrapping thus formed have a bending all along their circumference towards the outer surface of said wrapping.
  • the bending of the fitted rims of the lighttight wrapping can occur either towards the circumferential portion of the wrapping or to the corresponding end covers thereof.
  • the rims have a form such that any contact with a corresponding wall of the packing box causes a force that is directed almost normal to the outer face of the rim.
  • the bent rims of the wrapping can be formed in different ways. According to one technique, the rims are bent after they have been fitted to each other. A common procedure for fitting the rims to each other is heatsealing. The bending of the rims can suitably occur by rotating the wrapped roll about its axis and progressively bending the rims by sliding or rolling contact with an appropriate deflector.
  • the rims are given their ultimate shape, or approximately so, and then the rims are fitted to each other.
  • the latter technique can afford a bent rim which is more formproof than the first one.
  • Suitable embodiments of a packaged roll according to the invention are as follows.
  • the circumferential cover and the end covers have on their inside a thermoplastic layer, and the fitting of the corresponding rims occurs by heatsealing such layers.
  • the circumferential edge of the rim of the end covers extends slightly beyond the corresponding edge of the folded rim of the circumferential cover so hat the freely exposed portion of the rim of the circumferential cover screens so to say the head side of the sealed rim. This measure counts for rims folded towards the circumferential cover. It is clear that for rims folded towards the end covers, it is desirable for the circumferential cover to slightly extend beyond the end covers.
  • Packing a roll wrapped as described hereinbefore in a cardboard box without axial support of the roll can cause dust by repeated frictional contact of the roll with the inside surfaces of the walls of the box during transport and other manutentions of the box.
  • Dust that is adherent to the lighttight wrapper of the roll becomes captured by e.g. the velvet liners of the dispenser slot of the magazine into which the roll is loaded, and will next be progressively transferred to a film as the latter is pulled out through such liners.
  • a lighttightly packaged roll of light-sensitive film is wrapped in a dustproof foil before it is packed in a cardboard packing box.
  • a dustproof foil can be kept closed by means of overlapping longitudinal margins, and by end portions tucked in the open ends of the core of the wrapped roll.
  • Such foil suitably is uncoloured in order to not mislead the user about the actual purpose thereof.
  • a lighttightly packaged roll 10 of light-sensitive film comprises two end covers 11 and 12, and a circumferential cover 13 sealed to said end covers, as a lighttight wrapping for a light-sensitive film.
  • Rim 14 of the central opening of the end covers is lighttightly fitted to core 15 of the film roll.
  • covers 11, 12 and 13 comprised an inner layer of polyethylene which allowed heatsealing of the covers to each other and to the core.
  • the packaged roll has a leader 16 protruding from the circumferential cover and allowing starting unwinding of the roll after the roll has been placed in a suitable magazine.
  • Roll 10 is packaged in a shipping carton, not shown, by means of two supporting flanges having a hub engaging the core opening and a diameter which is larger than the diameter of the end covers. Sealed rims 17, 18 of the covers are urged by contact with the supporting flanges in a plane normal to the axis of the roll, as shown.
  • a roll package as described is disclosed in US-A-4 733 777 mentioned in the introduction, and is on the market under the trade name AGFA DATAREX of AGFA-GEVAERT N.V., Mortsel-Belgium.
  • Fig. 2 shows one embodiment of an improved roll package in accordance with the invention. Parts having the same function as the corresponding parts of Fig. 1 received the same numeral.
  • the lighttight fitting of end covers 11 and 12 to core 15 occurred by means of lips 19 tucked in the core opening and heatsealed to the inside surface of the core.
  • the core of the film roll in the present embodiment was made from cardboard, as distinct from the core of the Fig. 1 embodiment which is a plastic one.
  • the heatsealing of the end covers by means of lips 19 is disclosed in EP Patent 0 350 093.
  • Sealed rims 17 and 18 are bent towards circumferential cover 13 as shown diagrammatically in detail in Fig. 3 which is an enlarged view of portion 3 of Fig. 2.
  • Sealed rim 17 is an assembly of rim 21 of end cover 11 and of rim 22 of circumferential cover 13. The fitting of both rims to each other occurred in the present example by heatsealing the inside thermoplastic layers of both covers to each other, but can be done also in other ways, such as by glueing, interposition of a two-sided adhesive ribbon or the like.
  • the sealing of the rims can occur as shown in Fig. 4.
  • End covers 11 and 12 are applied against the lateral ends of wound roll 10 and fixed to the core thereof by means of lips 19 that are sealed to the inside of the core.
  • rims 21, 23 of both end covers and 22, 24 of the circumferential cover are urged together at an angular position of approximately 45° with respect to the end face of the roll, and sealed in this position by means of two opposed heated roller pairs 25, 26 and 27, 28 shown in broken lines which progressively seal the rims while the roll is rotated.
  • This technique has been described in US-A 4 733 777 mentioned hereinbefore.
  • the rims are next bent towards each other, i.e. in the direction towards circumferential cover 13, e.g. by means of rolling or sliding contact with appropriate guides that deflect and bend the rims.
  • the material of the wrapping foils, in particular that of the end covers becomes stretched by this bending so that the rims maintain their bent shape.
  • the rims are bent in the desired direction and, while in this position, their sealing is made.
  • This has the advantage over the former technique that a true "form sealing” is obtained which may keep its shape over a longer period of time.
  • the drawing of Fig. 5 shows such "form sealed" rims 17 and 18 and it will be apparent that edge 29 of rim 21 is located slightly backwards with respect to corresponding edge 30 of rim 22 because of its larger radius of curvature.
  • the diameter of the end covers can be increased so as to obtain an "overlapped" seal as illustrated diagrammatically in broken lines 32 in Fig. 5.
  • the film roll packaged and treated as described hereinbefore can then be wrapped in a protective wrapping foil 34 as illustrated in Fig. 6.
  • the foil has a rectangular shape and the film roll is rolled in the foil with the two longitudinal foil margins, running parallel to the roll axis, overlapping each other.
  • One of these margins can be provided with a self-adhesive, peelable seal 35, e.g. one obtained through fiberisation of a self-adhesive hotmelt on such margin.
  • the ends of the wrapper are tucked in the open ends of the roll core.
  • the film roll thus wrapped is finally placed in a cardboard shipping carton 36 as shown in Fig. 7, without use of conventional supporting flanges.
  • the bent roll rims are locally slightly flattened by their contact with the bottom wall of the carton but this contact is in no way detrimental to the lighttightness of the wrapping since the sealed rims only exhibit forces or components thereof that are normal or approximately so to their surface. Movement of the film roll in the shipping carton during transport and other manutentions may cause dust resulting from rubbing contact with the cardboard walls, and this dust could settle on the lighttight wrapping of the film roll if there were no protective wrapper 34 as shown in Fig. 6. Since this wrapper has no light protecting function as such, it may be advantageous to use for this wrapper a translucent or even transparent foil in order not to mislead the user of the film roll about the actual function of the wrapper.
  • a film package according to the present invention is not limited to the illustrated embodiment.
  • the sealed rims may be bent in the opposite direction as well, so that they get a shape wherein their bending is towards the outer surface of the circumferential covers. Loading of the sealed rims in a direction which runs parallel with, or nearly so, with the axis of the film roll causes increased bending of the rims, without giving rise to increased risk for destroying the lighttightness of the seals.
  • the lighttight fitting of the central opening of the end covers to the core can also occur in other ways.
  • EU-A1-0 579 216 which discloses clamping a margin of said opening into the core by means of a ring.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)
  • Packages (AREA)
EP19960200862 1995-04-18 1996-03-29 Lichtdicht verpackte lichtempfindliche Filmrolle Expired - Lifetime EP0738916B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19960200862 EP0738916B1 (de) 1995-04-18 1996-03-29 Lichtdicht verpackte lichtempfindliche Filmrolle

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP95200966 1995-04-18
EP95200966 1995-04-18
EP19960200862 EP0738916B1 (de) 1995-04-18 1996-03-29 Lichtdicht verpackte lichtempfindliche Filmrolle

Publications (2)

Publication Number Publication Date
EP0738916A1 true EP0738916A1 (de) 1996-10-23
EP0738916B1 EP0738916B1 (de) 1999-06-30

Family

ID=26139221

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960200862 Expired - Lifetime EP0738916B1 (de) 1995-04-18 1996-03-29 Lichtdicht verpackte lichtempfindliche Filmrolle

Country Status (1)

Country Link
EP (1) EP0738916B1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0350093A1 (de) * 1988-07-08 1990-01-10 Agfa-Gevaert N.V. Verpackte aufgewickelte Bahn lichtempfindlichen Materials und Verfahren zum Verpacken
US4894264A (en) * 1987-04-28 1990-01-16 Fuji Photo Film Co., Ltd. Gusset bag for photographic photosensitive materials
EP0414265A2 (de) * 1989-08-25 1991-02-27 Fuji Photo Film Co., Ltd. Verpackung für eine Rolle lichtempfindliches Material
WO1994012407A1 (en) * 1992-12-01 1994-06-09 Agfa-Gevaert Naamloze Vennootschap A fibreboard box containing a lighttightly wrapped roll of photographic film
DE4337368A1 (de) * 1993-06-05 1994-12-08 Du Pont Deutschland Lichtdichte Verpackung von bahnförmigem lichtempfindlichen Material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4894264A (en) * 1987-04-28 1990-01-16 Fuji Photo Film Co., Ltd. Gusset bag for photographic photosensitive materials
EP0350093A1 (de) * 1988-07-08 1990-01-10 Agfa-Gevaert N.V. Verpackte aufgewickelte Bahn lichtempfindlichen Materials und Verfahren zum Verpacken
EP0414265A2 (de) * 1989-08-25 1991-02-27 Fuji Photo Film Co., Ltd. Verpackung für eine Rolle lichtempfindliches Material
WO1994012407A1 (en) * 1992-12-01 1994-06-09 Agfa-Gevaert Naamloze Vennootschap A fibreboard box containing a lighttightly wrapped roll of photographic film
DE4337368A1 (de) * 1993-06-05 1994-12-08 Du Pont Deutschland Lichtdichte Verpackung von bahnförmigem lichtempfindlichen Material

Also Published As

Publication number Publication date
EP0738916B1 (de) 1999-06-30

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