EP0545330B1 - Package having a leader secured over a pouch - Google Patents
Package having a leader secured over a pouch Download PDFInfo
- Publication number
- EP0545330B1 EP0545330B1 EP19920120382 EP92120382A EP0545330B1 EP 0545330 B1 EP0545330 B1 EP 0545330B1 EP 19920120382 EP19920120382 EP 19920120382 EP 92120382 A EP92120382 A EP 92120382A EP 0545330 B1 EP0545330 B1 EP 0545330B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- leader
- pouch
- package
- sheets
- side edges
- 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.)
- Expired - Lifetime
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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
- G03C3/003—Individual packages for X-ray film, e.g. for dental applications
Definitions
- the present invention relates to a package for enclosing a plurality of sheets of material, such as a stack of x-ray film.
- the package may comprise a pouch or bag for holding the sheets, and a leader that projects from an end of the pouch.
- a film package can be placed in a magazine or cassette having a spindle, and the leader is attached to the spindle. Then the magazine or cassette is closed and the spindle rotated to strip the packaging material from the stack of sheets. Thereafter, the magazine is provided to a laser printer or other apparatus having a light tight compartment wherein the sheets can be removed seriatim for use.
- the package can be manually opened in a light tight environment and sheets removed and loaded into light tight cassettes of the kind used for making x-rays of patients.
- a leader on a package of the kind mentioned above sometimes needs to be relatively large as, for example, shown in DE-A-2 513 673 in order to reach from the pouch which holds the film sheets to the spindle of the magazine.
- the leader can be integral with the pouch as shown in DE-B-1 074 397, or formed separately and secured to the pouch. Either way, the leader projects away from the pouch.
- the leader is folded onto one side of the package and may be secured to that side temporarily by pressure sensitive tape, for example, as disclosed in the beforementioned U.S.-A-5,048,686. While this arrangement works satisfactorily, it can create a problem when film is loaded into the package.
- some production equipment has a hopper that holds a stack of empty packages having the end of the pouch opposite from the leader open to receive a stack of film sheets and a film carrier. Because the package leader projects from the pouch, the package does not fit well in the hopper. A better fit to the hopper can be achieved if the package, including the leader, is rectangular in shape. This, of course, must be achieved without adversely affecting the use of the leader in a magazine for pulling the package from the stack of film sheets.
- a package for enclosing a plurality of sheets of material, such as stack of x-ray film is known from US-A-4,955,479.
- Said package comprises a pouch for enclosing the sheets, the pouch having a first face and a second face located in generally parallel planes, the sheets being positionable between the faces and means sealing the faces together around the sheets, the pouch having a leading edge and first and second side edges extending from the leading edge, and a leader positioned entirely over the first face of the pouch, the leader having a first edge secured to the leading edge of the pouch and other portions of the leader being free from the first face of the pouch so that the other portions of the leader can be lifted from the pouch for removal of the pouch from the sheets.
- a package is generally designated 10 and comprises a pouch 12 and a leader 14.
- the pouch can be formed from two generally rectangular sheets 16 and 18 ( Figures 1 and 3) of packaging material.
- Various packaging materials are suitable for use in making the package.
- sheets 16,18 can be cut from a laminate comprising layers of black modified high density polyethylene and a metalized polyester or metalized oriented polypropolene with a heat sealant layer provided, as needed, to enable the sheets to be secured together by heat sealing.
- the leader can be cut from a sheet of rubber modified high density polyethylene, for example.
- the sheets 16,18 are of the same size and are located one above the other in generally parallel planes with the black layers of the sheets facing each other. They are initially secured together along the three side edges thereof, for example by lines of heat sealing designated 20, 22 and 24. Seals 20,24 are at side edges of the pouch while seal 22 is along the top or leading edge of the pouch. Initially, the bottom of the pouch is open, and the stack of film sheets is loaded into the pouch through the open bottom. Then the sheets 16,18 are sealed together at the bottom portion of the pouch by a line of heat sealing 26, for example. This leaves the film in a light tight space 28 ( Figure 3) between the sheets 16 and 18.
- the space 28 receives a stack of film sheets 30, positioned within a U-shaped carrier 32 which protects the film sheets in the package.
- a notch 35 is provided in a side edge of sheets 16,18 part way through seal 24 to facilitate tearing the sheets 16,18 to remove the lower portion of the package after it is loaded into a magazine.
- Leader 14 has first and second end edges 34,36 that are generally parallel to each other and edge 36 is shorter than edge 34.
- the leader also has side edges 38,40 that are perpendicular to edge 34 and extend a short distance toward edge 36. More specifically, the length of edges 38,40 is substantially equal to the width of seal line 22.
- Leader 14 also includes side edges 42,44 that extend from edges 38 and 40 and taper inwardly as they approach edge 36 of the leader. Thus, the width of the leader between side edges 42,44 is less than the width of the edge 34 of the leader.
- leader 14 is placed over the top or upper face of sheet 16 as illustrated in Figure 2 with the strip portion of the leader defined by edge 34 and side edges 38,40 overlying the seal 22. Then the leader is sealed to the pouch by a heat seal line shown at 46 in Figures 2 and 3. Heat seal line 46 does not extend into the portion of the leader defined by the tapered sides 42,44. Thus, the portion of the leader between heat seal 46 and edge 36 of the leader is completely unattached to the pouch so that it can be freely lifted from the upper face of sheet 16 and folded over the leading edge of the pouch, as shown in phantom in Figure 3. This free and unattached portion of the leader can be connected to a spindle or other apparatus used for pulling the packaging material away from the stack of sheets in the carrier board once the package is located in a magazine or the like.
- the leader Due to the manner in which the leader is attached to the pouch, the leader remains in the position shown in Figure 2 and in solid lines Figure 3 during final assembly and loading of the package with film, and during shipment and installation into a magazine.
- the natural position of the leader is over the top of the upper face of sheet 16 of the pouch rather than extending away from the pouch.
- the package fits neatly within a rectangular shaped bin adapted to hold a number of the empty packages in equipment which holds the empty packages and then loads them with film and carrier sheets. Even if the leader is accidentally lifted from the face of the sheet 16, it immediately returns into contact with the sheet when the leader is released.
- this attachment of the leader to the pouch avoids the need for adhesive tape or the like commonly used for holding the free end of a leader in a folded position over the top of a pouch in a film package.
- Another advantage of the package of the invention is that it is simple to fabricate and eliminates the need for folding of leaders about the pouch, as in some prior art packages, and also eliminates some lines of heat sealing required by prior packages.
- FIG 4 illustrates an embodiment of the package of the invention having a leader, generally designated 50, of a different construction. More specifically, the leader 50, like leader 14, is positioned entirely over the upper face of pouch 12, and only over the upper face.
- the leader 50 has an upper edge 52 that is positioned over the leading edge of pouch 12 and two side edges 54,56 which are perpendicular to edge 52 and extend along the side edges of the pouch 12 and along the upper face of sheet 16 of the pouch. Edges 54,56 are substantially longer than edges 38,40 of leader 14 and they extend a distance substantially greater than the heat seal line 22 ( Figure 1) which secures the sheets 16,18 together. Therefore, the leader adjacent the side edges 54,56 is secured to the pouch by lines of heat sealing designated 58,60, such lines of heat sealing extending downwardly from the heat seal line 46 that attaches the upper edge of the leader to the pouch.
- lines of heat sealing designated 58,60
- Leader 50 also includes tapered side edges 62,64 that extend from the wider upper portion of the leader downwardly toward the bottom of the package and terminate at an edge 66 of the leader which is generally parallel to edge 52 of the leader.
- edges 62, 64 and 66 are completely free of the pouch, i.e., they are not sealed to the pouch.
- Two rows of perforations 68,70 are provided in the leader 50 between seals 58,60 and adjacent to the seals. These rows of perforations extend from the heat seal line 46 to the end of the tapered edges 62,64 of the leader.
- the embodiment illustrated in Figure 4 has the same advantages as the package illustrated in Figures 1-3.
- the Figure 4 embodiment firmly secures side edge portions of the leader to the upper face of the package in a manner which prevents the leader from being inadvertently displaced upwardly from its position in contact with the upper face of the sheet 16 of the pouch.
Description
- The present invention relates to a package for enclosing a plurality of sheets of material, such as a stack of x-ray film.
- It is known to provide a light tight package for holding a stack of sheets of x-ray film or the like. The package may comprise a pouch or bag for holding the sheets, and a leader that projects from an end of the pouch. Such a film package can be placed in a magazine or cassette having a spindle, and the leader is attached to the spindle. Then the magazine or cassette is closed and the spindle rotated to strip the packaging material from the stack of sheets. Thereafter, the magazine is provided to a laser printer or other apparatus having a light tight compartment wherein the sheets can be removed seriatim for use. Alternatively, the package can be manually opened in a light tight environment and sheets removed and loaded into light tight cassettes of the kind used for making x-rays of patients. Packages and magazines of the kind described above are disclosed, for example, in U.S.-A-5,019,849, in U.S.-A-5,048,686, 1991; in EP-A-0 348 745 and in Italian Patent No. 1,062,043.
- A leader on a package of the kind mentioned above sometimes needs to be relatively large as, for example, shown in DE-A-2 513 673 in order to reach from the pouch which holds the film sheets to the spindle of the magazine. The leader can be integral with the pouch as shown in DE-B-1 074 397, or formed separately and secured to the pouch. Either way, the leader projects away from the pouch. Generally, to facilitate shipment and handling prior to placement in a magazine, the leader is folded onto one side of the package and may be secured to that side temporarily by pressure sensitive tape, for example, as disclosed in the beforementioned U.S.-A-5,048,686. While this arrangement works satisfactorily, it can create a problem when film is loaded into the package. More specifically, some production equipment has a hopper that holds a stack of empty packages having the end of the pouch opposite from the leader open to receive a stack of film sheets and a film carrier. Because the package leader projects from the pouch, the package does not fit well in the hopper. A better fit to the hopper can be achieved if the package, including the leader, is rectangular in shape. This, of course, must be achieved without adversely affecting the use of the leader in a magazine for pulling the package from the stack of film sheets.
- Thus there exist a problem of providing a package for sheets of x-ray film or the like wherein the leader is attached to the package so that it is unlikely to be accidentally separated from its normal position along one face of the package, but wherein the leader can be easily extended for attachment to a spindle for removal of the package from a stack of film sheets. Additionally, there exist the problem of providing a film package which will fit easily into production equipment having a hopper to hold a stack of empty packages.
- A package for enclosing a plurality of sheets of material, such as stack of x-ray film is known from US-A-4,955,479. Said package comprises a pouch for enclosing the sheets, the pouch having a first face and a second face located in generally parallel planes, the sheets being positionable between the faces and means sealing the faces together around the sheets, the pouch having a leading edge and first and second side edges extending from the leading edge, and a leader positioned entirely over the first face of the pouch, the leader having a first edge secured to the leading edge of the pouch and other portions of the leader being free from the first face of the pouch so that the other portions of the leader can be lifted from the pouch for removal of the pouch from the sheets.
- The foregoing problems are solved by providing a package for enclosing a plurality of sheets of material, such as a stack of x-ray film, as defined in Claim 1.
- The invention and its objects and advantages will become more apparent in the detailed description of the preferred embodiment presented below.
- In the detailed description of the preferred embodiment presented below, reference is made to the accompanying drawings, in which:
- Figure 1 is an exploded plan view of a package not part of the invention and illustrating the pouch and leader portions of the package prior to attachment of the leader to the pouch and before the stack of film is loaded into the package, and further illustrating a stack of film sheets in a protective carrier positioned for loading into the package;
- Figure 2 is a plan view of the package after attachment of the leader and loading of the stack of film and carrier into the package;
- Figure 3 is an enlarged cross section taken along line 3-3 of Figure 2; and
- Figure 4 is a view similar to Figure 2 but illustrating the package of the invention with its leader construction.
- Referring now to the drawings in detail, a package is generally designated 10 and comprises a
pouch 12 and aleader 14. The pouch can be formed from two generallyrectangular sheets 16 and 18 (Figures 1 and 3) of packaging material. Various packaging materials are suitable for use in making the package. For example,sheets - The
sheets Seals seal 22 is along the top or leading edge of the pouch. Initially, the bottom of the pouch is open, and the stack of film sheets is loaded into the pouch through the open bottom. Then thesheets sheets - As best shown in Figures 1 and 3, the
space 28 receives a stack offilm sheets 30, positioned within aU-shaped carrier 32 which protects the film sheets in the package. Anotch 35 is provided in a side edge ofsheets seal 24 to facilitate tearing thesheets -
Leader 14 has first andsecond end edges edge 36 is shorter thanedge 34. The leader also hasside edges edge 34 and extend a short distance towardedge 36. More specifically, the length ofedges seal line 22.Leader 14 also includesside edges edges edge 36 of the leader. Thus, the width of the leader betweenside edges edge 34 of the leader. - After the
seals pouch 10 are formed,leader 14 is placed over the top or upper face ofsheet 16 as illustrated in Figure 2 with the strip portion of the leader defined byedge 34 andside edges seal 22. Then the leader is sealed to the pouch by a heat seal line shown at 46 in Figures 2 and 3.Heat seal line 46 does not extend into the portion of the leader defined by thetapered sides heat seal 46 andedge 36 of the leader is completely unattached to the pouch so that it can be freely lifted from the upper face ofsheet 16 and folded over the leading edge of the pouch, as shown in phantom in Figure 3. This free and unattached portion of the leader can be connected to a spindle or other apparatus used for pulling the packaging material away from the stack of sheets in the carrier board once the package is located in a magazine or the like. - Due to the manner in which the leader is attached to the pouch, the leader remains in the position shown in Figure 2 and in solid lines Figure 3 during final assembly and loading of the package with film, and during shipment and installation into a magazine. In other words, the natural position of the leader is over the top of the upper face of
sheet 16 of the pouch rather than extending away from the pouch. Thus the package fits neatly within a rectangular shaped bin adapted to hold a number of the empty packages in equipment which holds the empty packages and then loads them with film and carrier sheets. Even if the leader is accidentally lifted from the face of thesheet 16, it immediately returns into contact with the sheet when the leader is released. In addition, this attachment of the leader to the pouch avoids the need for adhesive tape or the like commonly used for holding the free end of a leader in a folded position over the top of a pouch in a film package. Another advantage of the package of the invention is that it is simple to fabricate and eliminates the need for folding of leaders about the pouch, as in some prior art packages, and also eliminates some lines of heat sealing required by prior packages. - Figure 4 illustrates an embodiment of the package of the invention having a leader, generally designated 50, of a different construction. More specifically, the
leader 50, likeleader 14, is positioned entirely over the upper face ofpouch 12, and only over the upper face. Theleader 50 has anupper edge 52 that is positioned over the leading edge ofpouch 12 and twoside edges edge 52 and extend along the side edges of thepouch 12 and along the upper face ofsheet 16 of the pouch.Edges edges leader 14 and they extend a distance substantially greater than the heat seal line 22 (Figure 1) which secures thesheets side edges heat seal line 46 that attaches the upper edge of the leader to the pouch. -
Leader 50 also includestapered side edges edge 66 of the leader which is generally parallel toedge 52 of the leader. Thus the portion of the pouch defined byedges - Two rows of
perforations leader 50 betweenseals 58,60 and adjacent to the seals. These rows of perforations extend from theheat seal line 46 to the end of the taperededges edge 66 is to be secured to a spindle or the like, theedge 66 is grasped by an operator and pulled upwardly as viewed in Figure 3, thereby causing the leader to tear along the rows ofperforations leader 14. - The embodiment illustrated in Figure 4 has the same advantages as the package illustrated in Figures 1-3. In addition, the Figure 4 embodiment firmly secures side edge portions of the leader to the upper face of the package in a manner which prevents the leader from being inadvertently displaced upwardly from its position in contact with the upper face of the
sheet 16 of the pouch.
Claims (4)
- A package for enclosing a plurality of sheets of material, such as a stack of x-ray film, the package comprising a pouch (12) for enclosing the sheets (30), the pouch having a first face (16) and a second face (18) located in generally parallel planes, the sheets (30) being positionable between the faces (16, 18), and means (20, 24, 26, 46, 58, 60) sealing the faces (16, 18) together around the sheets (30), the pouch (12) having a leading edge and first and second side edges extending from the leading edge, and
a leader (50) positioned entirely over the first face (16) of the pouch (12), the leader (50) having a first edge (52) secured to the leading edge of the pouch and other portions of the leader being free from the first face (16) of the pouch (12) so that the other portions of the leader (50) can be lifted from the pouch (12) for removal of the pouch (12) from the sheets (30), said leader (50) having two side edges (54, 56) substantially perpendicular to the first edge (52), the leader side edges being secured to the side edges of the pouch (12), characterized in that the leader (50) further comprises two rows of perforations (68, 70) between the side edges of the leader (50) so that a central leader portion between the rows of perforations can be pulled away from the pouch (12) and the remaining side portion of the leader outside the rows of perforation by tearing the central leader portion along the rows of perforations (68, 70). - A package as set forth in claim 1 wherein front side edges (62, 64) of the leader (50) taper inwardly at a front portion of the leader (50).
- A package as set forth in claims 1 or 2 wherein said two rows of perforations (68, 70) are provided between seals (58, 60) of said sealing means and adjacent to such seals.
- A package as set forth in claim 2 or 3 dependent on claim 2 wherein said rows of perforation extend from a heat seal line (46) to the end of said tapered front side edges (62, 64) of said leader (50).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80296691A | 1991-12-06 | 1991-12-06 | |
US802966 | 1991-12-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0545330A1 EP0545330A1 (en) | 1993-06-09 |
EP0545330B1 true EP0545330B1 (en) | 1997-03-19 |
Family
ID=25185203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19920120382 Expired - Lifetime EP0545330B1 (en) | 1991-12-06 | 1992-11-28 | Package having a leader secured over a pouch |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0545330B1 (en) |
JP (1) | JPH05249579A (en) |
DE (1) | DE69218345T2 (en) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1074397B (en) * | 1960-01-28 | Lumoprmt Zmdler K G Harn bürg | Pack for photosensitive photographic papers | |
DE2513673A1 (en) * | 1975-03-27 | 1976-10-07 | Philips Patentverwaltung | X-ray sheet film pack - has external cross-bar which mips pack at least partically open |
DE3821746A1 (en) * | 1988-06-28 | 1990-01-11 | Agfa Gevaert Ag | LIGHT-TIGHT, RIPPABLE SHEET FOR STACK OF PHOTOGRAPHIC SHEET FILMS |
-
1992
- 1992-11-28 DE DE1992618345 patent/DE69218345T2/en not_active Expired - Fee Related
- 1992-11-28 EP EP19920120382 patent/EP0545330B1/en not_active Expired - Lifetime
- 1992-12-07 JP JP32702292A patent/JPH05249579A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE69218345T2 (en) | 1997-09-11 |
EP0545330A1 (en) | 1993-06-09 |
JPH05249579A (en) | 1993-09-28 |
DE69218345D1 (en) | 1997-04-24 |
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