EP0228556B1 - Sealant cartridges and method of making the same - Google Patents

Sealant cartridges and method of making the same Download PDF

Info

Publication number
EP0228556B1
EP0228556B1 EP86116079A EP86116079A EP0228556B1 EP 0228556 B1 EP0228556 B1 EP 0228556B1 EP 86116079 A EP86116079 A EP 86116079A EP 86116079 A EP86116079 A EP 86116079A EP 0228556 B1 EP0228556 B1 EP 0228556B1
Authority
EP
European Patent Office
Prior art keywords
cartridge body
shoulder
heat
resin film
sealant
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
Application number
EP86116079A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0228556A2 (en
EP0228556A3 (en
Inventor
Motoaki Kadono
Kazutoyo Hashimura
Tamotsu Kobayashi
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.)
DuPont Toray Specialty Materials KK
Original Assignee
Toray Silicone Co Ltd
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 Toray Silicone Co Ltd filed Critical Toray Silicone Co Ltd
Publication of EP0228556A2 publication Critical patent/EP0228556A2/en
Publication of EP0228556A3 publication Critical patent/EP0228556A3/en
Application granted granted Critical
Publication of EP0228556B1 publication Critical patent/EP0228556B1/en
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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/02—Body construction
    • B65D35/04—Body construction made in one piece
    • B65D35/08—Body construction made in one piece from plastics 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container
    • 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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/34—Coverings or external coatings
    • B65D25/36—Coverings or external coatings formed by applying sheet material

Definitions

  • the present invention relates to a sealant cartridge in which a cylindrical cartridge body has been inserted into a tube of a heat-shrinkable resin film and said resin film then heat-shrunk, according to the preamble of claim 1 (known from DE-U 8 512 062.6) as well as to a method for making such cartridges according to claim 2.
  • sealant cartridges used for sealant storage and application consist of a cylindrical cartridge body with a shoulder, the latter having an extrusion part, and a plunger inserted into the opening at the back end.
  • the external surface of the cartridge body of such a sealant cartridge must be printed with, for example, a trademark, the names of the manufacturer and/or distributor, use instructions and, a pattern.
  • this makes mass production difficult and, moreover, it is difficult to obtain a sharp image when the cartridge material is a thermoplastic resin.
  • sealant cartridges are used in which the cylindrical cartridge body has been inserted into a tube of a heat-shrinkable resin film and the resin film then heat-shrunk.
  • the external surface of the cartridge body is not imprinted, and the trademark, pattern, etc., are printed on the heat-shrinkable resin film tube.
  • DE-U 8 512 062.6 discloses a sealant cartridge comprising a cylindrical cartridge body consisting of helically coiled fiber sheets, the outside of said cartridge body being covered by a heat-shrunk resin film.
  • the heat-shrunk resin film provides at least at one end of the cartridge body an access end which forms an angular ring covering the front edge of the body during heat-shrinking.
  • the annular part of the access end projecting radially inwards is tightly fitted against the inner surface of the cartridge body. According to the known teaching the cartridge body is protected against the penetration of humidity.
  • the object of the present invention is to provide a sealant cartridge and method of making it in which the tube of heat-shrunk resin film will not slip or be displaced axially, and will not slip from the cartridge body.
  • the cartridge body of such a sealant cartridge is not to be displaced axially and should not slip from the tube of heat-shrunk resin film.
  • the present invention relates to a sealant cartridge in which a heat-shrunk resin film covers at least part of a cylindrical cartridge body characterized by an extrusion part (14) on a shoulder (12) of a cylindrical cartridge body (11) in which the shoulder (12) joins the extrusion part (14) and the cylindrical cartridge body (11) and the outside diameter of said cartridge body (11) increases in the direction of the shoulder (12) while its inside diameter remains constant along the length, said heat-shrunk resin film (17) extending toward the extrusion part (14) of said cartridge and covering the outer margin of the shoulder (18).
  • the present invention also relates to a method of making said sealant cartridge comprising inserting a heat-shrinkable resin film tube (17) over a cylindrical cartridge body (11) in which there is an extrusion part (14) on a shoulder (12) of the cylindrical cartridge body (11) and the shoulder (12) joining the extrusion part (14) to the cylindrical cartridge body (11) where the outside diameter of said cartridge body (11) increases in the direction of the shoulder (12) while the inside diameter of the cartridge body (11) remains constant along the length of the cartridge, and thereafter heating and positioning said resin tube such (17) that the resultant heat-shrunk resin film covers at least part of the cylindrical cartridge body (11) extending toward the extrusion part (14) of said cartridge and covering the outer margin of the sholuder (12).
  • the outside diameter of the cartridge body (11) increases in the direction of the shoulder (12) while the inside diameter remains constant along the length. This prevents movement of the cartridge body (11) within the heat-shrunk resin film tube (17): the extrusion part (14) of the cartridge body (11) is prevented from moving back into the tube (17) of heat-shrunk resin film.
  • the end edge of said resin film covers the outer margin of the shoulder (12) of said cartridge body (11). This also prevents movement of the cartridge body (11) within the heat-shrunk resin film tube (17): the plunger (13) end of the cartridge is prevented from moving forward in the tube (17) of heat-shrunk resin film.
  • Figure 1 is a longitudinal cross section of one embodiment of the sealant cartridge of the present invention.
  • Figure 2 is a plane diagram of said sealant cartridge.
  • Sealant for example, a single-package silicone sealant, a single-package polyurethane sealant, a single-package polysulfide sealant, or acrylic sealant, is filled into cartridge body (11) and plunger (13), which is used to extrude the sealant, is inserted at the back end.
  • Extrusion part (14) is formed on shoulder (12) of cartridge body (11). Screw threads are formed on the outer circumference of the extrusion part (14) and a moistureproof film (15) is attached over the extrusion tip of extrusion part (14) in order to close off the opening.
  • a sealant extrusion discharge nozzle (16) is screwed onto the outer circumference of extrusion part (14).
  • cartridge body (11) is thinly fomed throughout and its outside diamter gradually increases in the direction of shoulder (12) while the inside diameter remains constant along the length.
  • cartridge body (11) is about 1.3-fold thicker at its topmost extremity (extrusion part end) than at its rearmost point (plunger end).
  • This thickness ratio, topmost extremity to rearmost point is preferably 1.1 to 1.7.
  • Resins to be molded into the cartridge body (11) are preferably thermoplastic resins such as polyethylene or polypropylene.
  • the preferred molding methods are injection molding and blow molding.
  • cartridge body (11) will not carry printing, but a trademark or pattern can be printed thereon when the heat-shrunk resin film tube (17) is transparent.
  • the cartridge body (11) is inserted into a heat-shrinkable resin film tube and this film is then heat-shrunk in oder to cling to the external surface of cartridge body (11).
  • the end of the heat-shrinkable resin tube (17) extending toward the extrusion part (14) of the cartridge is positioned such that it covers the outer margin of shoulder (12) of cartridge body (11).
  • the edge of the heat-shrunk resin film which covers the outer margin of shoulder (18) may contact the base of extrusion part (14).
  • This heat-shrunk resin film tube (17) which covers at least part of the cylindrical cartridge body (11) is to be printed with the brand name, name of the maunfacturer and/or distributor, use instructions, volume, patterns, etc. (none of which are illustrated), and it may be transparent, translucent, or opaque.
  • the present sealant cartridge also encompasses the case in which the extrusion part (14) is itself directly formed into a nozzle (16).
  • the sealant cartridge of the present invention is distinguished in that the outside diameter of the cartridge body (11) increases in the direction of the tip while the inside diameter remains constant along the length; and it that the end edge of said resin film tube (17) covers the outer margin of the shoulder (18) of said cartridge body (11).
  • the tube (17) of heat-shrunk resin film will not slip or be displaced axially along the cartridge body (11), nor will it come off the cartridge body (11).
  • the cartridge body (11) will not be axially displaced and will not slip from the tube (17) of heat-shrunk resin film. Furthermore, when the plunger (13) is pushed from the rear toward the shoulder (12), the sliding operation will be smooth and leakage of sealant from between the plunger (13) and cartridge body (11) will be prevented. Consequently, packing and application operations using the present sealant cartridge will be easy, reliable, and rapid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tubes (AREA)
  • Packages (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
EP86116079A 1985-12-09 1986-11-20 Sealant cartridges and method of making the same Expired - Lifetime EP0228556B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP189207/85 1985-12-09
JP1985189207U JPH0235649Y2 ( ) 1985-12-09 1985-12-09

Publications (3)

Publication Number Publication Date
EP0228556A2 EP0228556A2 (en) 1987-07-15
EP0228556A3 EP0228556A3 (en) 1988-11-09
EP0228556B1 true EP0228556B1 (en) 1990-08-08

Family

ID=16237326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116079A Expired - Lifetime EP0228556B1 (en) 1985-12-09 1986-11-20 Sealant cartridges and method of making the same

Country Status (6)

Country Link
EP (1) EP0228556B1 ( )
JP (1) JPH0235649Y2 ( )
KR (1) KR870005777A ( )
AU (1) AU598494B2 ( )
BR (1) BR8606032A ( )
DE (1) DE3673368D1 ( )

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2781468B1 (fr) * 1998-07-27 2000-10-13 Pascal Chenneviere Dispositif de conditionnement et de dosage de produit sous forme de creme.
JP3746177B2 (ja) * 1999-12-15 2006-02-15 理想科学工業株式会社 容積可変容器
US6899028B2 (en) 1999-12-15 2005-05-31 Riso Kagaku Corporation Container
JP2002145289A (ja) * 2000-11-09 2002-05-22 Hosokawa Yoko Co Ltd 流動性物質用容器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU472890B1 ( ) * 1970-10-12 1972-04-13 Masaaki Fujio
JPS591352A (ja) * 1982-06-15 1984-01-06 大倉工業株式会社 多層フイルムを被覆した炭酸飲料用延伸ブロ−容器
DE3405547A1 (de) * 1984-02-16 1985-08-14 Hilti Ag, Schaan Auspresskolben fuer behaelter
DE8512062U1 (de) * 1985-04-24 1985-06-05 Schieferdecker Gmbh & Co Kg, 4006 Erkrath Behälter
JPS629932A (ja) * 1985-07-05 1987-01-17 Shinko Kagaku Kk シ−ラント用プラスチック製カートリッジ

Also Published As

Publication number Publication date
AU6618886A (en) 1987-06-11
DE3673368D1 (de) 1990-09-13
EP0228556A2 (en) 1987-07-15
EP0228556A3 (en) 1988-11-09
JPS6299551U ( ) 1987-06-25
KR870005777A (ko) 1987-07-07
JPH0235649Y2 ( ) 1990-09-27
AU598494B2 (en) 1990-06-28
BR8606032A (pt) 1987-09-15

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