GB2271754A - Light tight packaging of rolled web of light-sensitive material - Google Patents
Light tight packaging of rolled web of light-sensitive material Download PDFInfo
- Publication number
- GB2271754A GB2271754A GB9321722A GB9321722A GB2271754A GB 2271754 A GB2271754 A GB 2271754A GB 9321722 A GB9321722 A GB 9321722A GB 9321722 A GB9321722 A GB 9321722A GB 2271754 A GB2271754 A GB 2271754A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- caps
- sheet
- rolled web
- secured
- 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
Links
- 239000000463 material Substances 0.000 title claims abstract description 38
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 30
- 239000002390 adhesive tape Substances 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000012943 hotmelt Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 229920002457 flexible plastic Polymers 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Packages (AREA)
Abstract
A light-tightly packaged rolled web 1 of light-sensitive material wound onto a core 2 comprises a sheet 3 of light-tight wrapping material fastened to the leading end of the web and end caps comprising a round end portion 5 and a circumferential strip 6 removably and light-tightly secured to the circumference of the round end portion. The end caps are placed over the ends of the rolled web and the sheet 3 of the packaging is secured to the circumferential strips 6 of the caps more strongly than the strips of the caps are secured to the end portions 5 so that by pulling the sheet of the packaging, the strips are torn from the end portions of the caps. Each circumferential strip 6 may have overlapping ends and may be secured to the sheet 3 by double-sided adhesive tape 11. <IMAGE>
Description
Light-tight packaged rolled web of light-sensitive material and method of light-tightly packaging a rolled web of light-sensitive material.
The invention relates to a light-tight packaged rolled web of light-sensitive material wound onto a core, the packaging comprising a sheet of light-tight wrapping material fastened to the leading end of the web so that pulling the sheet causes the web to start unwinding from the core.
Such packaged web of light-sensitive material is for example a web of photographic film or paper for loading into a camera or other apparatus in which the material is to be exposed.
A light-tightly packaged roll of this kind is known from EP-A-O 350 093.
In one embodiment of this application the wrapping sheet is slightly wider than the rolled web and forms a circumferential portion to which two separate annular flange portions are secured. When packaging, a leader secured by means of adhesive tape to the leading end of the web of light-sensitive material is laid over the sheet of wrapping. The end flange portions are secured to the core of the rolled web and then the wrapping sheet is rolled up while the outer margins of the sheet are progressively brought into contact with the outer margins of the flange portions and are sealed together by heat and pressure.
The light-tight wrapping material leaves the leader exposed and is tearable by pulling on the leader to cause the web to commence unwinding. The sheet is thereby separated from the annular flanges.
While such packaged rolled web may be loaded in the apparatus by roomlight, the whole packaging process has to be performed in the dark.
Therefore, great demands are put to the reliability of the heat-seal apparatus because in the darkness no checking of the seal between sheet and annular flanges and between the flanges and the core is possible.
As the margins of the sheet have to be sealed to the margins of the annular flanges, great demands are also put to the dimensions of the rolled web and especially to the positioning of the light-tight material with respect to the rolled web.
It is an object of the invention to remedy these drawbacks and to provide a packaged rolled web which can be loaded in the exposure apparatus in roomlight and which is also completely safe in roomlight and can be manufactured in a easier way and more reliable way.
Therefore according to the present invention there is provided a light-tight packaged rolled web of light-sensitive material wound onto a core, which comprises a sheet of light-tight wrapping material fastened to the leading end of the web so that pulling the sheet causes the web to start unwinding from the core and end portions covering the ends of the rolled web, wherein the end portions of the packaging are caps comprising a round end portion and a circumferential strip removably and light-tightly secured to the circumference of the round end portion, said caps being placed over the ends of the rolled web and the sheet of the packaging being secured to the circumferential strips of the caps, but more strongly than the strips of the caps are secured to the end portions of the caps so that by pulling the sheet of the packaging, the strips are torn from the end portions of the caps and the web unwound.
The caps may be manufactured in roomlight. The essential light-tight securing in the packaging are the securings of the end portions of the caps to the sheet of light-tight wrapping material which securing for example by hot-melt, tape or adhesives means can be made in roomlight, permitting to check the quality of the securing and its light-tightness.
In a particular embodiment of the invention, the circumferential strip of the caps is covered by the sheet of the packaging wrapped around the rolled web.
Preferably the strip of the caps has overlapping ends.
In a preferred embodiment of the invention, on the inside of the end portions of the caps, there are present rings which are centrally secured, which rings are cramped in the hollow ends of the core which is open-ended to form an interference fit.
The ring can be made from flexible plastic material and secured by hot-melt means or adhesives or sealing to the remainder of the end portion, which end portion may be provided with an opening opposite the inside of the ring.
Most preferably the circumferential strip and the sheet of the packaging are secured to each other by means of double sided adhesive tape. This double sided tape may initially be on the circumferential strips of the caps or on the sheet of light-tight wrapping material.
The invention also relates to a method of light-tightly packaging a rolled web of light-sensitive material wound onto a core, which method comprises applying a sheet of light-tight wrapping material to the web, and wrapping the sheet around the roll, and covering the ends of the roll by end portions of light-tight material which comprises two caps, each comprising a round end portion and a circumferential strip tearably secured to the circumference of the end portion, these caps are placed over the ends of the rolled web, the packaging sheet is secured to the leading end of the rolled web and wrapped around the rolled web while being secured to the circumferential strip of the caps in a stronger way than the strips of the caps are secured to the end portions.
Two preferred embodiments of the invention will hereafter be described by way of example only and with reference to the accompanying drawings, in which:
figure 1 is an exploded view of a packaged rolled web of
light-sensitive material according to the invention;
figure 2 shows the detail indicated by the arrow F2 in figure 1, at
an enlarged scale;
figure 3 is a front view indicated by arrow F3 in figure 2;
figure 4 is a sectional view according to line IV-IV in figure 3;
figure 5 is a perspective view of the packaged rolled web from
figure 1, before wrapping the packaging sheet;
figure 6 is a perspective view similar to that of figure 5 of the
packaged rolled web, but after completion of the packaging and with
a cassette of the exposure apparatus in outline;
figure 7 is a sectional view according to line Vil-Vil from figure
6, at an enlarged scale;;
figure 8 is a perspective view similar to that of figure 6, but
after pulling off the packaging sheet;
figure 9 is an exploded view similar to that of figure 1, but with
respect to an alternative embodiment of the invention.
Figures 1 to 4 show a web 1 of light-sensitive material rolled onto an open ended core 2 and a packaging consisting of a sheet 3 and two cylindrical caps 4. The sheet 3 and the caps 4 are made from light-tight material which is preferably also moisture-tight. This wrapping material is conveniently a laminate comprising a film of aluminium and a film of black polymeric material and may for instance be a laminate of paper and black polyethylene bearing an aluminium film.
The width of the sheet 3 is approximately equal to the width of the rolled web 1.
Each cap 4 as shown in figure 7 comprises an annular end portion 5 and a circumferential strip 6, it is light-tight secured by means of sealing, tape or adhesive, by an outer margin 7 to the outer margin 8 of the end portion 5. The strip 6 is not a closed ring but has two ends which are overlapping each other over at least 10 degrees but preferably between 45 degrees and 90 degrees. The end portion 5 shows a central opening 9 which is surrounded at the inside of the cap 4 by a cylindrical ring 10 of flexible plastic material attached by welding or glued with hot-melt or other adhesive to the inside of the portion 5 and able to be cramped inside an open end of the core 2. The inner diameter of each cap 4 is greater than the outer diameter of the rolled web 1 of light sensitive material so that both caps 4 can be placed over the ends of the rolled material 1.
A double sided strong adhesive tape 11 is adhered to the outside of the strip 6 of both caps 4, except on the overlapped end of the strip. The tape 11 permits a stronger adhesion between the strip and the web than the adhesion of the strip 6 of a cap 4 to its end portion 5.
The complete caps 4 may be manufacture in roomlight and the light-tightness of the connection of the strips 6 to the end portions 5 and of the rings 10 to these portions 5 can be verified before use.
In use when packaging the rolled web 1 of light sensitive material 1, two caps 4 are placed in safelight conditions over the ends of the rolled web 1 with their rings 10 cramped inside the open ends of the core 2 and the sheet 3 is secured to the leading end of the web 1 by means of a strip 12 of adhesive tape, such that two corners of the sheet 3 are inserted underneath the overlapping end of the strips 6 of the caps 4, as shown in figure 5. The sheet 3 is then wrapped several times around the rolled web 1 and the leading end of the sheet 3 is finally secured by another strip 13 of adhesive tape to a previous convolution of the sheet 3.
The thus manufactured packaged rolled web 1 can be loaded in room light inside a cassette 14 of an exposure apparatus, as shown in figures 6 and 7. The strip 13 is removed and the leading end of the sheet 3 is inserted through the slit 15 of the cassette 14. By pulling on the sheet 3, the sealing at the circumference of the caps 4 is ruptured while the sheet 3 is unwrapped and the web 1 of light sensitive material commences unwinding from the core 2.
It is important that the connection of the sheet 3 to the strip 6 of the caps 4 by means of the double sided tape 11 is stronger than the connection of the margins 7 and 8 to each other, so that, by pulling on the sheet 3 this connection ruptures and the strip 6 of the caps is torn off and remains adhered to the sheet 3 as shown in figure 8.
As soon as the leading end of the web 1 leaves the cassette 14, this end and the sheet 3 secured to it may be cut off and the web 1 further lead into the feed mechanism of an exposure apparatus.
The alternative embodiment shown in figure 9 of the packaged web 1 differs from the above described embodiment in that, before the sheet 3 is wrapped around the rolled web 1, the double sided tape 11 is not adhered to the strips 6 of the caps 4 but fixed along the edges of that side of the sheet 3 which will be in contact with the strip of the cap when the sheet is wrapped around the web 1.
As the diameter of the caps 4 is slightly greater than the diameter of the rolled web 1, the positioning of these caps 4 causes no problems even if the dimension of the rolled web 1 deviates from the nominal values. Deviations of the inner diameter of the core are normally very small and may always be compensated by the elasticity of the ring 10.
Deviations of the width of the web 1 have no influence as the strips 6 are sufficiently overlapped by the edges of the sheet 3 when packaging.
A perfect light-tight packaging is always ensured.
As the caps 4 may be manufactured in roomlight, their quality can be optimum and the action time in darkness for packaging is very limited.
Loading of the exposure machine may also take place in roomlight.
The sheet of the packaging has not necessarily to be directly attached to the leading end of the web. It may be attached by means of an intermediate sheet or leader.
Claims (14)
1. A light-tight packaged rolled web of light-sensitive material wound
onto a core, which comprises a sheet of light-tight wrapping
material fastened to the leading end of the web so that pulling the
sheet causes the web to start unwinding from the core and end
portions covering the ends of the rolled web, wherein the end
portions of the packaging re caps comprising a round end portion
and a circumferential strip removably and light-tightly secured to
the circumference of the round end portion, said caps being placed
over the ends of the rolled web and the sheet of the packaging
being secured to the circumferential strips of the caps, but more
strongly than the strips of the caps are secured to the end
portions of the caps so that by pulling the sheet of the packaging,
the strips are torn from the end portions of the caps and the web
unwound.
2. A light-tight packaged rolled web according to claim 1, wherein the
circumferential strip of the caps is covered by the sheet of the
packaging wrapped around the rolled web.
3. A light-tight packaged rolled web according to claim 1 or claim 2,
wherein the strips of the caps have overlapping ends.
4. A light-tight packaged rolled web according to claim 3, wherein the
ends of the strip of the cap overlap over by at least 10 degrees.
5. A light-tight packaged rolled web according to any of claims 1 to
4, wherein the inside of the end portions of the caps comprise
rings which are centrally secured, which rings are cramped in the
hollow ends of the core which is open-ended to form an interference
fit.
6. A light-tight packaged rolled web according to claim 5, wherein the
ring is made from flexible plastic material.
7. A light-tight packaged rolled web according to claim 5 or claim 6,
wherein the ring of the cap is secured by welding by hot-melt or
adhesives or sealing to the remainder of the end portion.
8. A light-tight packaged rolled web according to claim 5, claim 6 or
claim 7, wherein the end portion of each cap is provided with an
opening opposite the inside of the ring.
9. A light-tight packaged rolled web according to any of claims 1 to
8, wherein the circumferential strip and the sheet of the packaging
are secured to each other by means of double sided adhesive tape.
10. A light-tight packaged rolled web of light-sensitive material
substantially as herein described with reference to and as
illustrated in the accompanying drawings.
11. A method of light-tightly packaging a rolled web of light-sensitive
material wound onto a core, which method comprises applying a sheet
of light-tight wrapping material to the web, and wrapping the sheet
around the rolled web and covering the ends of the rolled web by
end portions of light-tight material, wherein two caps, each
comprising a round end portion and a circumferential strip tearably
secured to the circumference of the end portion, are placed over
the ends of the rolled web, the wrapping sheet is secured to the
leading end of the rolled web and wrapped around the rolled web
while being secured to the circumferential strip of the caps in a
stronger way than the strips of the caps are secured to the end
portions.
12. A method according to claim 11, wherein the sheet is secured to the
strips of the caps by means of double sided tape which has first
been placed on the outside of the strips.
13. A method according to claim 11, wherein the sheet is secured to the
strips of the caps by means of double sided tape which has first
been placed along the edges of the sheet, on the side which after
wrapping the sheet around the rolled web is situated in contact
with the strips on the caps.
14. A method of light-tightly packaging a rolled web of light-sensitive
material substantially as herein described with reference to the
accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB929222471A GB9222471D0 (en) | 1992-10-24 | 1992-10-24 | Daylight-loading packaging |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9321722D0 GB9321722D0 (en) | 1993-12-15 |
| GB2271754A true GB2271754A (en) | 1994-04-27 |
| GB2271754B GB2271754B (en) | 1996-02-28 |
Family
ID=10724066
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB929222471A Pending GB9222471D0 (en) | 1992-10-24 | 1992-10-24 | Daylight-loading packaging |
| GB9321722A Expired - Fee Related GB2271754B (en) | 1992-10-24 | 1993-10-21 | Light-tight packaged rolled web of light-sensitive material and method of light-tightly packaging a rolled web of light-sensitive material |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB929222471A Pending GB9222471D0 (en) | 1992-10-24 | 1992-10-24 | Daylight-loading packaging |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB9222471D0 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0710878A1 (en) * | 1994-11-02 | 1996-05-08 | Eastman Kodak Company | Light-tight package |
| WO1997004359A1 (en) * | 1995-07-21 | 1997-02-06 | Jan Cornelis Boele | Roll provided with a lightproof packaging and a method for the lightproof packaging of a roll of light-sensitive material |
| US5655659A (en) * | 1996-09-04 | 1997-08-12 | Eastman Kodak Company | Light-tight package with perforated end disks |
| US5738210A (en) * | 1995-12-14 | 1998-04-14 | Eastman Kodak Company | Light-tight package |
| WO2018100896A1 (en) * | 2016-12-01 | 2018-06-07 | コニカミノルタ株式会社 | Coating film roll body |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4148395A (en) * | 1977-12-05 | 1979-04-10 | Eastman Kodak Company | Roll package |
-
1992
- 1992-10-24 GB GB929222471A patent/GB9222471D0/en active Pending
-
1993
- 1993-10-21 GB GB9321722A patent/GB2271754B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4148395A (en) * | 1977-12-05 | 1979-04-10 | Eastman Kodak Company | Roll package |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0710878A1 (en) * | 1994-11-02 | 1996-05-08 | Eastman Kodak Company | Light-tight package |
| WO1997004359A1 (en) * | 1995-07-21 | 1997-02-06 | Jan Cornelis Boele | Roll provided with a lightproof packaging and a method for the lightproof packaging of a roll of light-sensitive material |
| GB2309102A (en) * | 1995-07-21 | 1997-07-16 | Jan Cornelis Boele | Roll provided with a lightproof packaging and a method for the lightproof packaging of a roll of light-sensitive material |
| US5738210A (en) * | 1995-12-14 | 1998-04-14 | Eastman Kodak Company | Light-tight package |
| US5655659A (en) * | 1996-09-04 | 1997-08-12 | Eastman Kodak Company | Light-tight package with perforated end disks |
| WO2018100896A1 (en) * | 2016-12-01 | 2018-06-07 | コニカミノルタ株式会社 | Coating film roll body |
| KR20190076019A (en) * | 2016-12-01 | 2019-07-01 | 코니카 미놀타 가부시키가이샤 | Coated film roll body |
| CN110023207A (en) * | 2016-12-01 | 2019-07-16 | 柯尼卡美能达株式会社 | Cover film scroll |
| JPWO2018100896A1 (en) * | 2016-12-01 | 2019-10-17 | コニカミノルタ株式会社 | Coated film roll body |
| KR102183525B1 (en) * | 2016-12-01 | 2020-11-26 | 코니카 미놀타 가부시키가이샤 | Cover film roll body |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2271754B (en) | 1996-02-28 |
| GB9222471D0 (en) | 1992-12-09 |
| GB9321722D0 (en) | 1993-12-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19971021 |