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GB2104443A - Paper can barrel - Google Patents

Paper can barrel Download PDF

Info

Publication number
GB2104443A
GB2104443A GB08213927A GB8213927A GB2104443A GB 2104443 A GB2104443 A GB 2104443A GB 08213927 A GB08213927 A GB 08213927A GB 8213927 A GB8213927 A GB 8213927A GB 2104443 A GB2104443 A GB 2104443A
Authority
GB
United Kingdom
Prior art keywords
paper
barrel
jointing
sheet
synthetic resin
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
GB08213927A
Other versions
GB2104443B (en
Inventor
Kiyoshi Kawamata
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.)
Nihon Seikan KK
Original Assignee
Nihon Seikan KK
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 Nihon Seikan KK filed Critical Nihon Seikan KK
Publication of GB2104443A publication Critical patent/GB2104443A/en
Application granted granted Critical
Publication of GB2104443B publication Critical patent/GB2104443B/en
Expired legal-status Critical Current

Links

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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/22—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines with double walls; with walls incorporating air-chambers; with walls made of laminated material
    • 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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/28—Other details of walls
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
    • C09J5/10—Joining materials by welding overlapping edges with an insertion of plastic material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Making Paper Articles (AREA)
  • Table Devices Or Equipment (AREA)
  • Laminated Bodies (AREA)
  • Toys (AREA)
  • Road Signs Or Road Markings (AREA)
  • Drawing Aids And Blackboards (AREA)
  • Paper (AREA)

Abstract

A paper can barrel consisting of a paper cylindrical body 1 formed by jointing opposed marginal ends 2, 2a of a sheet of paper to each other. The end 2, 2a are beforehand applied with respective layers 5, 5a, preferably of serrated profile, of a heat-fusible and weldable synthetic resin such as polyethylene. After forming a jointing step 3 in the end 2, the other end 2a is superposed to the step 3 and the superposed portion is pressed and heated so that the layers 5, 5a are fused to become integral with each other thereby to form a paper can barrel in which the ends 2, 2a of the paper barrel in which the ends 2, 2a of the paper sheet including the cut end surfaces of the paper sheet in the jointing portion are completely coated and sealed by the synthetic resin. <IMAGE>

Description

SPECIFICATION Paper can barrel This invention relates to a paper can barrel and, more particularly, to a paper can barrel in which the vertical joint portion is coated with a synthetic resin.
In a conventional paper can barrel, the vertical joint is formed by superposing both marginal ends of a sheet of paper to each other and adhering them to each other by means of an adhesive or, alternatively, by lapping and jointing these marginal edges with the inner end being folded or bent. In the first-mentioned jointing structure, however, the liquid contained by the can inconveniently permeates into the cut end surface of the paper sheet which is exposed to the inside of the can, so that it is necessary suitably to treat the end surface to prevent the permeating of the liquid. In the jointing structure of the second-mentioned type, the thickness of the jointing portion is increased undesirably to make it difficult to fix a can end plate to the paper can barrel.
In addition, the non-adhered lapping portion in the vertical joint tends to be deformed undesirably by application of external force.
Accordingly, the present invention has been devised with the intention of providing an improved paper can barrel having an improved joint structure, thereby to overcome the above-described problems of the prior art.
To this end, according to the invention, a paper can barrel consists of a paper cylindrical body formed by joining both marginal edges of a sheet of paper to each other, wherein the marginal edges constituting the joint portion are coated with a synthetic resin.
A preferred paper can barrel in accordance with the invention is hereinafter described by reference to the accompanying drawings, in which: Figure lisa schematic perspective view of the paper can barrel; Figure 2 is a front elevational view of a paper sheet used as a blank for the paper can barrel shown in Figure 1; Figure 3 is a plan view of the paper sheet shown in Figure 2; Figure 4 is a schematic end view of the paper sheet in a rounded state; Figure 5 is an enlarged sectional view of a part of the paper sheet as shown in Figure 4; and Figure 6 is an enlarged sectional view of the vertical joint portion of the paper can barrel.
The paper can barrel 6 as shown in Figure 1, is constituted by a paper cylindrical body formed by jointing both marginal ends of a sheet 1 of paper shown in Figures 1 to 4. The paper sheet 1 is prepared by lining the outer surface of a core paper sheet 7 (See Figure 5) with a layer 4 of a heat-fusible and weldable synthetic resin such as a polyethylene, applying an aluminum foil 8 to the inner surface of the core paper sheet 7, and lining the outer surface of the aluminum foil 8 with a heat-fusible and weldable synthetic resin such as polyethylene.
The surface of the marginal end 2 of the paper sheet 1, which is to constitute the inner surface of the vertical joint portion of the paper can barrel, is coated with a layer 5 of polyethylene preferably of serrated profile. Also, the surface of the marginal end 2a of the paper sheet 1,which is to constitute the outer surface of the vertical joint portion of the paper can barrel, is coated with a layer 5a also preferably of serrated profile, as shown in Figures 3 to 5.
The marginal end 2 of the paper sheet 1 is pressed over a predetermined width of, for example, about 8 mm to form a jointing step 3 which projects inwardly of the paper can barrel to be formed.
The paper sheet 1 thus formed is then rounded and its marginal ends 2, 2a are lapped so that the marginal end 2a fits over the jointing step 3. The overlapping portion is then clamped and pressurized by a clamping tool while being subjected to heat, so that the polyethylene layers are fused and united to each other thereby to form a paper can barrel 6 having a vertical joint portion 10. Then the layers, 4, 4a of the synthetic resin on the inner and outer surfaces of the paper sheet 1 are fused and softened so as to be integrated with each other with the inner surface of the marginal end 2a firmly adhered to the outer surface of the jointing step 3.
Meanwhile, the layer 5 of the synthetic resin applied to the inner end of the marginal end 2a, i.e.
the jointing step 3, is fused to flow and spread toward the end surface 9 of the paper sheet 1 as shown in Figure 6, so as to coat the inner end of the jointing step 3, end surface 9 and the inner portion of the marginal end 2a of the vertical joint portion. On the other hand, the layer 5a of the synthetic resin applied to the outer end of the marginal end 2a of the paper sheet 1 is also fused to flow and spread toward the end surface 9a of the paper sheet 1 to coat the outer surface of the jointing step 3, end surface 9a and the outer side of the jointing marginal end 2a.
Since the marginal edge of the paper sheet 1 constituting the vertical joint portion 10 of the paper can barrel 6 is completely covered by the synthetic resin, it is possible to avoid the undesirable permeation of the liquid content of the paper can into the end surface of the paper sheet now formed into the paper can barrel. Thanks to the provision of the jointing step 3, it is possible to obtain a smooth and continuous outer surface for the paper can barrel at the vertical joint portion 10.
Instead of projecting the jointing step 3 inwardly of the paper can barrel, it is possible to project the same outwardly of the paper can barrel.
It has been confirmed through an experiment conducted by the present inventors that the layers 5, 5a of the synthetic resin of serrated form flow and spread in a satisfactory manner.
In the paper can barrel of the present invention having the described construction, the synthetic resin applied to the jointing portion effectively stiffens the joint portion and completely eliminates any permeation of the liquid content of the can into the cut end surface of the paper sheet constituting the paper can barrel.

Claims (4)

1. A paper can barrel consisting of a paper cylindrical body formed by jointing two marginal ends of a sheet of paper to each other, characterized in that the two marginal edges of the sheet are coated with a heat-fusible and weidable synthetic resin.
2. A paper can barrel as claimed in claim 1, wherein the sheet of paper at its one marginal end has a jointing step which projects inwardly of the can barrel to be formed.
3. A paper can barrel as claimed in claim 1, wherein the sheet of paper at its one marginal end has a jointing step which projects outwardly of the can barrel to be formed.
4. A paper can barrel constructed substantially as hereinbefore described with reference to, and as shown in, the accompanying drawings.
GB08213927A 1981-08-25 1982-05-13 Paper can barrel Expired GB2104443B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1981125390U JPS5829912U (en) 1981-08-25 1981-08-25 paper can body

Publications (2)

Publication Number Publication Date
GB2104443A true GB2104443A (en) 1983-03-09
GB2104443B GB2104443B (en) 1985-09-25

Family

ID=14908947

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08213927A Expired GB2104443B (en) 1981-08-25 1982-05-13 Paper can barrel

Country Status (6)

Country Link
JP (1) JPS5829912U (en)
KR (1) KR880000637B1 (en)
CA (1) CA1198383A (en)
DE (1) DE3225992A1 (en)
FR (1) FR2511974B1 (en)
GB (1) GB2104443B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015489A1 (en) * 1991-03-06 1992-09-17 Lamibox Ag Process for making a sealed package, cut-out for making the package and package so made
EP0823378A1 (en) * 1996-08-02 1998-02-11 Field Group Public Limited Company Tubular containers

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19502992A1 (en) * 1995-02-01 1996-08-08 Brain Power Consulting Gmbh Process for producing hollow bodies and hollow bodies according to this method
FR2944780B1 (en) * 2009-04-28 2011-06-10 Lablabo DEVICE FOR PACKAGING AND DISPENSING THE BOTTLE-POCKET TYPE
JP6609900B2 (en) * 2014-09-17 2019-11-27 凸版印刷株式会社 Paper cup
JPWO2021234996A1 (en) * 2020-05-19 2021-11-25

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2275063A (en) * 1937-08-17 1942-03-03 Humoco Corp Container and method of making the same
US2190479A (en) * 1938-08-16 1940-02-13 Humoco Corp Method and means for making containers
GB631294A (en) * 1939-03-20 1949-10-31 Shellmar Products Corp Improvements in or relating to a container and method of making the same
US2261416A (en) * 1939-07-04 1941-11-04 Harold D Schrier Method of making containers
US3004694A (en) * 1958-03-19 1961-10-17 Safe Pack Container Co Container structures
FR1540101A (en) * 1966-10-07 1968-09-20 Int Paper Co Laminated wall packaging box, as well as method and installation for its manufacture
CH479463A (en) * 1968-02-08 1969-10-15 Alexon Pac Ag Packaging can, especially for liquids containing gas
JPS5414621B2 (en) * 1971-12-25 1979-06-08
DE2635011A1 (en) * 1976-08-04 1978-02-09 Henkel Kgaa DRUM FOR SCHUETTGUT

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992015489A1 (en) * 1991-03-06 1992-09-17 Lamibox Ag Process for making a sealed package, cut-out for making the package and package so made
CH680724A5 (en) * 1991-03-06 1992-10-30 Lamibox Ag C O Dres Reichlin &
EP0823378A1 (en) * 1996-08-02 1998-02-11 Field Group Public Limited Company Tubular containers

Also Published As

Publication number Publication date
GB2104443B (en) 1985-09-25
FR2511974A1 (en) 1983-03-04
CA1198383A (en) 1985-12-24
FR2511974B1 (en) 1986-05-02
DE3225992C2 (en) 1988-07-14
DE3225992A1 (en) 1983-03-10
KR880000637B1 (en) 1988-04-19
KR830008897A (en) 1983-12-16
JPS5829912U (en) 1983-02-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930513