EP0747758A1 - Conteneur pour feuilles lithographiques - Google Patents

Conteneur pour feuilles lithographiques Download PDF

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Publication number
EP0747758A1
EP0747758A1 EP95112799A EP95112799A EP0747758A1 EP 0747758 A1 EP0747758 A1 EP 0747758A1 EP 95112799 A EP95112799 A EP 95112799A EP 95112799 A EP95112799 A EP 95112799A EP 0747758 A1 EP0747758 A1 EP 0747758A1
Authority
EP
European Patent Office
Prior art keywords
container
panel
grooves
wall
panels
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.)
Withdrawn
Application number
EP95112799A
Other languages
German (de)
English (en)
Inventor
Donald J. Martin
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.)
Rock City Box Co Inc
Original Assignee
Rock City Box Co Inc
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 Rock City Box Co Inc filed Critical Rock City Box Co Inc
Publication of EP0747758A1 publication Critical patent/EP0747758A1/fr
Withdrawn legal-status Critical Current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
    • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/2004—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form the container body having hollow side-walls
    • B65D5/2009—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form the container body having hollow side-walls all formed by folding extensions of the side walls
    • 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

  • This invention relates to boxes for shipping and storing sheets of photosensitive material, and is more particularly concerned with boxes for shipping and storing photosensitive lithographic plates.
  • the invention is more specifically directed to light-tight containers made of corrugated board, in which unexposed lithographic plates can be stored, and from which the plates can be fed automatically to a lithographic plate setter in a hands-off lithographic printing operation.
  • Lithographic plates of this type are employed in a computer-to-plate system, which includes a computer-to-plate imagesetter.
  • Equipment of this type comprises a filmless system, preparing press-ready plates for the printing industry, and can print from digital files directly to lithographic plates.
  • the finished plates are completed on the press floor, giving the press crew complete control of just-in-time preparation of the plates to reduce make-ready time and for shorter run lengths.
  • Systems of this type are employed by publishers who rely on electronic processes to create their finished product.
  • the lithographic plates themselves are flat plates of aluminum, typically about 24 inches by 35 inches, and packed 50 -- 100 to a box.
  • a fully loaded box of plates weighs about 35 -- 70 pounds (i.e., 16 - 32 Kg).
  • the boxes are stored and shipped flat, but the box is tilted in use for automated withdrawal of the plates for exposure in the plate setter.
  • the boxes or containers are flat and rectangular.
  • the plate setter machine automatically opens the box and withdraws the sheets as needed, one at a time. When finished, the machine automatically replaces the lid, and the partly filled box or container is removed and stored.
  • the box has to be light-tight, and the walls of the box have to be strong enough to support the weight of the plates, e.g., about 35 -- 70 lbs.
  • the boxes are shipped and stored flat, i.e., horizontal, but in use the box is pitched at about 70 degrees so the weight of the unused lithographic plates bears on one of the side walls.
  • the box or container has to be made light-tight, so that stray light does not leak into the container and expose or fog the plates.
  • Laido U.S. Pat. No. 4,802,619 describes a box and lid system for storing heavy, flat items, and these can be photographic plates or X-ray film plates.
  • the container has side and end walls that are folded at score lines to create a hollow wall of rectangular section. An end flap created in the side walls folds over and fits into the hollow space of the end walls.
  • lithographic plates are rather sensitive to moisture, and the container for them should prohibit moisture in the storage area from entering the container and contaminating the plates.
  • none of the prior containers has addressed this problem.
  • a shipping or storage container is constructed for use with lithographic plates or similar photosensitive sheets.
  • the container is formed of a heavyduty corrugated board or other sheet material of a predetermined thickness and in which a filler is sandwiched between an inner liner and an outer liner.
  • a generally rectangular base panel is defined on the sheet material to form the floor or base of the container.
  • a first end panel is formed unitary with the base panel at one end edge of the base panel.
  • first V-grooves are cut in the sheet material through the inner liner and filler at the end edges and side edges of the base panel.
  • Each of the end panels and each of the side panels has a series of three parallel V-grooves, i.e., second, third, and fourth V-grooves, cut through the inner liner and the filler and extending parallel to the associated first V-grooves.
  • the end panels and the side panels also each have a free edge parallel to the V-grooves.
  • the first and second V-grooves define between them an outer wall panel
  • the second and third V-grooves define an upper wall panel
  • the third and fourth V-grooves define an interior wall panel
  • said fourth V-groove and the associated free edge define a base wall panel.
  • Each of the V-grooves forms a ninety-degree bend such that the end panels and side panels form respective tubular box walls.
  • the associated base wall panel extends the said interior wall panel to the outer wall panel parallel to the upper panel and lies adjacent the base wall.
  • the tubular box walls meet at stepped corners so that the adjoining side and end walls define a zig-zag junction, and obstruct light leakage through the corners of the container.
  • the tubular walls define a rectangular space within them, and a fill material, such as a corrugated honeycomb, is placed within each of the rectangular spaces.
  • a fill material such as a corrugated honeycomb
  • the fill material comprises a honeycomb material having flutes oriented perpendicular to the plane of the base panel.
  • the outer wall panels of the first and second end panels have ends aligned with the side edges of the base panel, and the associated upper, interior, and base wall panels have square ends aligned with one another and offset a predetermined amount from the ends of the respective outer wall panels.
  • the predetermined amount of offset is substantially equal to the width of the upper wall panel of the adjoining side panel.
  • the container is provided with a cover formed of an upper rectangular flat sheet member dimensioned to reach to the outer wall panels of the box walls, and a lower rectangular sheet member attached thereto and dimensioned to reach between the interior wall panels of the box walls.
  • This cover also avoids any straight line path for light leakage when the cover is taped or clamped in place.
  • the V-grooved corrugated container of this invention is of simple, economical construction and is sturdy and robust enough to stack horizontally for shipping, with sufficient wall strength to support the lithographic plates while tilted on one side within the plate setter.
  • the light-tight container also maintains the lithographic plates free from exposure to stray light, without need for special foils and liners that can reduce the post-use recyclability of the container.
  • a container 10 for storing and shipping lithographic plates is constructed of a die-cut, V-grooved and folded sheet or blank of a corrugated paper material, or of another suitable sheet material.
  • the container 10 has a base or floor 12, with box-construction end walls 14 and box construction side walls 16.
  • a rectangular pad 18 of corrugated material fits into the rectangular opening defined between the end walls 14 and between the side walls 16 and provides a cushion for the underside of the lithographic sheets or plates.
  • a lid 20 is made of two parts, i.e., an upper panel 22 and a lower panel 24 that is centrally secured, by an adhesive, to the lower side of the panel 22.
  • the upper panel 22 has the same dimensions as the outer dimensions of the container 10, and the lower panel 24 is dimensioned to span the opening defined by the end walls 14 and the side walls 16.
  • stepped corners 26 i.e., non-mitered corners, that avoid any straight line path for stray light leakage through the corners of the container.
  • the corners 26 are formed with at least one step, and could have several to create a zig-zag path for stray light.
  • Fig. 2 shows a die-cut blank 30 of corrugated material that is used to create the container 10.
  • the blank 30 is V-grooved as shown to create a rectangular base panel 32 that is defined between a pair of side V-grooves 34 and a pair of end V-grooves 36.
  • the blank 30 has opposed end wall portions 38 unitarily formed with the base panel 32 at first and second ends of the base panel and separated from it by the respective V-grooves 36.
  • An enlargement of the blank 30, featuring one of the side wall portions 40, is shown in cross-section in Fig. 3.
  • V-grooves 42, 44, and 46 Between each of the side wall portions of the blank there is a series of parallel V-grooves 42, 44, and 46 between the associated V-groove 34 and a free edge 48, and parallel to them.
  • the V-grooves 34 and 42 define between them an outer side wall panel 50
  • the V-grooves 42 and 44 define between them a top wall panel 52
  • the V-grooves 44 and 46 define between them an interior wall panel 54
  • the V-groove 46 and associated free edge 48 define between them a base wall panel 56.
  • a filler body 58 of a honeycomb corrugated material, and of rectangular cross section, is employed to fill the rectangular void defined by the four wall panels 50, 52, 54, and 56.
  • the blank itself is made of a corrugated sheet material 60, comprising an upper liner 62, a lower liner 64 and a corrugated filler 66.
  • the V-grooves 34, 42, 44, and 46 are cut through the upper liner 62 and the filler 66 at a forty-five degree angle, leaving the lower liner 64 intact.
  • the side wall portion 40 is folded at ninety-degrees at each of the V-grooves, forming a box wall around the honeycomb filler 58, as shown in cross section in Fig. 4.
  • the end wall portions 38 are also provided with parallel V-grooves 142, 144, and 146 between the V-groove 36 and the associated free edge 148, to define an outer wall portion 150, a top wall portion 152, an interior wall portion 154, and a base wall portion 156.
  • the elements that have been described in respect to the side wall portions 40 are identified th similar reference numbers, but raised by 100.
  • the outer wall portions 150 of the end wall portions 38 have square ends 158 that are aligned with the V-grooves 34.
  • the remaining wall panels 152, 154, and 156 have aligned square ends 159 that are offset inwards from the ends 158 a predetermined amount, i.e., by the width of the box wall. This construction forms the stepped corner joint to be described shortly.
  • an adhesive is applied to the V-grooves 34, 42, 44, and 46 and to the upper liner 62 on the wall portions 50, 52, 54, and 56. Adhesive is also applied to the margin of the base panel 32 where the base wall panel 56 is to contact it. Then, the filler body 58 is placed on the wall portion 50, the wall portion is bent at 90 degrees at each of the V-grooves, and the wall panels are wrapped around the filler body 58. This results in the tubular box wall construction shown in cross section in Fig. 4.
  • the base panel portion lies horizontal on the margin of the base panel 32, i.e., parallel to the upper wall panel 52, with the interior wall panel facing the inside of the container, and the outer wall panel facing outwards.
  • the filler body has its flutes oriented vertically, that is, perpendicular to the plane of the base panel 32.
  • the end walls 14 are similarly formed, and so the description thereof can be omitted here.
  • the offsets in the end walls 14 results in a non-mitered, stepped corner construction that helps block stray light from entering the container.
  • the ends of the side walls 16 meet the stepped-out or offset ends of the outer wall panels 150 of the end wall panels, and the ends of the end walls 14 abut the upper liner on the outer wall panels 50 of the side walls 16.
  • an opaque tape 68 is applied over the corners, as shown in Fig. 5, and then additional opaque tape 70 is applied along the walls 14, 16 over the corners 26. In the latter positions, a short slit is cut at the corners, and the tape 70 is folded under the container 10 at the dash line shown in Fig, 5.
  • the lid 20 also provides a stepped path for blocking any light leakage when the container is closed.
  • the container 10 is intended to hold about fifty to one-hundred aluminum lithographic plates. For shipment or storage, these are supported on the pad 18 that rests on the base 12. A container fully loaded with one hundred plates typically weighs thirty-five to seventy pounds. Within the plate setter, the container is tilted onto one side edge, and so the side wall 16 has to be robust enough to support the thirty-five to seventy pounds of lithographic plates.
  • V-grooved, box-wall construction of this embodiment permits the container to be constructed out of sheet material of one-quarter inch (1 ⁇ 4") corrugated or of even greater thickness.
  • the sheet material can be single wall, double wall, or triple wall material, if desired.
  • the containers can be bundled twenty-five deep on a pallet or skid, and then banded or shrink-wrapped in place on the skid.
  • the light-tight, rugged container can be constructed without foils or other nonrecyclable materials, post-use disposal does not present a problem for the user.
  • the container is constructed not to allow moisture into the area of the container where the plates are stored. This can be accomplished by using a specially coated corrugated board, a moisture barrier laminated to corrugated board, or a plastic corrugated board. Also, the container can employ an interior pre-formed plastic tray inside the corrugated lid, and a plastic tray liner below the lithographic sheets.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Packages (AREA)
EP95112799A 1995-06-06 1995-08-15 Conteneur pour feuilles lithographiques Withdrawn EP0747758A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US46634895A 1995-06-06 1995-06-06
US466348 1995-06-06

Publications (1)

Publication Number Publication Date
EP0747758A1 true EP0747758A1 (fr) 1996-12-11

Family

ID=23851420

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95112799A Withdrawn EP0747758A1 (fr) 1995-06-06 1995-08-15 Conteneur pour feuilles lithographiques

Country Status (1)

Country Link
EP (1) EP0747758A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106218147A (zh) * 2016-08-05 2016-12-14 振石集团华美新材料有限公司 一种易组装的复合材料箱体结构
CN114001204A (zh) * 2021-04-27 2022-02-01 北京瀚江新材料科技有限公司 一种高抗菌环保型医疗用消音风管及其高抗菌涂层

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE624062A (fr) *
NL267694A (fr) * 1900-01-01
US2148048A (en) * 1935-03-26 1939-02-21 Marion R Mulford Carton
US2354706A (en) 1940-08-21 1944-08-01 Du Pont Photographic package
US4802619A (en) 1986-11-28 1989-02-07 Michael Laido Storage and transport containers for heavy and/or fragile objects
US4984688A (en) 1989-07-14 1991-01-15 E. I. Du Pont De Nemours & Co. Film box

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE624062A (fr) *
NL267694A (fr) * 1900-01-01
US2148048A (en) * 1935-03-26 1939-02-21 Marion R Mulford Carton
US2354706A (en) 1940-08-21 1944-08-01 Du Pont Photographic package
US4802619A (en) 1986-11-28 1989-02-07 Michael Laido Storage and transport containers for heavy and/or fragile objects
US4984688A (en) 1989-07-14 1991-01-15 E. I. Du Pont De Nemours & Co. Film box

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106218147A (zh) * 2016-08-05 2016-12-14 振石集团华美新材料有限公司 一种易组装的复合材料箱体结构
CN114001204A (zh) * 2021-04-27 2022-02-01 北京瀚江新材料科技有限公司 一种高抗菌环保型医疗用消音风管及其高抗菌涂层

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