EP0228556A2 - Sealant cartridges and method of making the same - Google Patents
Sealant cartridges and method of making the same Download PDFInfo
- Publication number
- EP0228556A2 EP0228556A2 EP86116079A EP86116079A EP0228556A2 EP 0228556 A2 EP0228556 A2 EP 0228556A2 EP 86116079 A EP86116079 A EP 86116079A EP 86116079 A EP86116079 A EP 86116079A EP 0228556 A2 EP0228556 A2 EP 0228556A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- cartridge body
- shoulder
- cartridge
- heat
- 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.)
- Granted
Links
Images
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.
- 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.
- 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.
- the object of the present invention is to provide a sealant cartridge 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 comprising an extrusion part on a shoulder of a cylindrical cartridge body in which the shoulder joins the extrusion part and the cylindrical cartridge body and the outside diameter of said cartridge body increases in the direction of the shoulder while its inside diameter remains constant along the length, a heat-shrunk resin film covers at least part of the cylindrical cartridge body extending toward the extrusion part of said cartridge and covering the outer margin of the shoulder.
- the present invention also relates to a method of making a sealant cartridge comprising inserting a heat-shrinkable resin film tube over a cylindrical cartridge body in which there is an extrusion part on a shoulder of the cylindrical cartridge body and the shoulder joining the extrusion part to the cylindrical cartridge body where the outside diameter of said cartridge body increases in the direction of the shoulder while the inside diameter of the cartridge body remains constant along the length of the cartridge, and thereafter heating and positioning said resin tube such that the resultant heat-shrunk resin film covers at least part of the cylindrical cartridge body extending toward the extrusion part of said cartridge and covering the outer margin of the shoulder.
- the outside diameter of the cartridge body increases in the direction of the shoulder while the inside diameter remains constant along the length. This prevents movement of the cartridge body within the heat-shrunk resin film tube: the extrusion part of the cartridge body is prevented from moving back into the tube of heat-shrunk resin film.
- the end edge of said resin film covers the outer margin of the shoulder of said cartridge body. This also prevents movement of the cartridge body within the heat-shrunk resin film tube: the plunger end of the cartridge is prevented from moving forward in the tube of heat-shrunk resin film.
- FIG. 1 is a longitudinal cross section of one embodiment of the sealant cartridge of the present invention.
- Swealant for example, a single-package silicone sealant, a single-package polyurethane sealant, a single-package polysuflide sealant, or acrylic sealant, is filled into cartridge body 11 and plunger 12, 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.
- the cartridge body is thinly formed throughout and its outside diameter 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 order to cling to the external surface of cartridge body 11.
- the end of the heat-shrinkable resin tube extending toward the extrusion part 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 manufacturer 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 is itself directly formed into a nozzle.
- the sealant cartridge of the present invention is distinguished in that the outside diameter of the cartridge body increases in the direction of the tip while the inside diameter remains constant along the length; and in that the end edge of said resin film tube covers the outer margin of the shoulder of said cartridge body.
- the tube of heat-shrunk resin film will not slip or be displaced axially along the cartridge body, nor will it come off the cartridge body. Or in other words, the cartridge body will not be axially displaced and will not slip from the tube of heat-shrunk resin film.
- the sliding operation will be smooth and leakage of sealant from between the plunger and cartridge body 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)
Abstract
Description
- 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.
- The 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. For each sealant brand, 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, However, this makes mass production difficult and, moreover, it is difficult to obtain a sharp image when the cartridge material is a thermoplastic resin.
- As a consequence, 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. In this approach, the external surface of the cartridge body is not imprinted, and the trademark, pattern, etc., are printed on the heat-shrinkable resin film tube.
- However, the following problem occurs in connection with said prior sealant cartridges. Even after the tube of heat-shrinkable resin film has been tightly heat-shrunk over the cylindrical cartridge body, this tube may be axially displaced, or in the extreme case may slip from the cartridge body, because the outside diameter of the cartridge body is constant along its length. In other words, the problem is axial displacement of the cartridge body and, in the extreme case, slippage of the cartridge body from the heat-shrinkable resin tube. This problem is particularly significant when the external surface of the cartridge body is flat and smooth and the cartridge body is made of synthetic resins such as polyethylene or polypropylene.
- 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.
- 11 - cartridge body
- 12 - shoulder
- 13 - plunger
- 14 - extrusion part of the cartridge body
- 15 - moistureproof film
- 16 - sealant extrusion discharge nozzle
- 17 - heat shrunk resin film tube
- 18 - end edge of heat-shrunk
resin film tube 17 covering outer margin of the shoulder - The inventors examined various methods for overcoming the preceding problem in the prior art and, as a result, developed this cartridge and method of making it. The object of the present invention is to provide a sealant cartridge in which the tube of heat-shrunk resin film will not slip or be displaced axially, and will not slip from the cartridge body. In other words, 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 comprising an extrusion part on a shoulder of a cylindrical cartridge body in which the shoulder joins the extrusion part and the cylindrical cartridge body and the outside diameter of said cartridge body increases in the direction of the shoulder while its inside diameter remains constant along the length, a heat-shrunk resin film covers at least part of the cylindrical cartridge body extending toward the extrusion part of said cartridge and covering the outer margin of the shoulder.
- The present invention also relates to a method of making a sealant cartridge comprising inserting a heat-shrinkable resin film tube over a cylindrical cartridge body in which there is an extrusion part on a shoulder of the cylindrical cartridge body and the shoulder joining the extrusion part to the cylindrical cartridge body where the outside diameter of said cartridge body increases in the direction of the shoulder while the inside diameter of the cartridge body remains constant along the length of the cartridge, and thereafter heating and positioning said resin tube such that the resultant heat-shrunk resin film covers at least part of the cylindrical cartridge body extending toward the extrusion part of said cartridge and covering the outer margin of the shoulder.
- In the sealant cartridge of the present invention, the outside diameter of the cartridge body increases in the direction of the shoulder while the inside diameter remains constant along the length. This prevents movement of the cartridge body within the heat-shrunk resin film tube: the extrusion part of the cartridge body is prevented from moving back into the tube of heat-shrunk resin film.
- Furthermore, the end edge of said resin film covers the outer margin of the shoulder of said cartridge body. This also prevents movement of the cartridge body within the heat-shrunk resin film tube: the plunger end of the cartridge is prevented from moving forward in the tube of heat-shrunk resin film.
- The present invention will be explained using an example of execution with reference to the drawings. Figure 1 is a longitudinal cross section of one embodiment of the sealant cartridge of the present invention. Swealant (not illustrated), for example, a single-package silicone sealant, a single-package polyurethane sealant, a single-package polysuflide sealant, or acrylic sealant, is filled into cartridge body 11 and
plunger 12, which is used to extrude the sealant, is inserted at the back end.Extrusion part 14 is formed onshoulder 12 of cartridge body 11. Screw threads are formed on the outer circumference of theextrusion part 14 and amoistureproof film 15 is attached over the extrusion tip ofextrusion part 14 in order to close off the opening. In the present case, a sealantextrusion discharge nozzle 16 is screwed onto the outer circumference ofextrusion part 14. The cartridge body is thinly formed throughout and its outside diameter gradually increases in the direction ofshoulder 12 while the inside diameter remains constant along the length. As a consequence of this thickness variation, 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. - In general, the external surface of 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 order to cling to the external surface of cartridge body 11. The end of the heat-shrinkable resin tube extending toward the extrusion part of the cartridge is positioned such that it covers the outer margin ofshoulder 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 ofextrusion part 14. This heat-shrunkresin 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 manufacturer and/or distributor, use instructions, volume, patterns, etc. (none of which are illustrated), and it may be transparent, translucent, or opaque. - Actual examples of materials to be used for the heat-shrinkable resin film are vinyl chloride resins, nylon resins and polyethylene resins. It is preferably subjected to a surface treatment to obtain a sharp printed image.
- Even when this sealant cartridge is stood upright and manually grasped from above at its upper end and raised up and waved about, the cartridge body 11 will not slip or drop down and so will not slip or fly out. Also, the heat-shrinkable
resin film tube 17 will not slip or move up. - Furthermore, when
plunger 13 is pushed from the rear of cartridge body 11 toward the shoulder in order to extrude the sealant from the cartridge through theextrusion part 14, this sliding operation will be smooth and there will be no leakage of sealant from any gap betweenplunger 13 and cartridge body 11. Accordingly, such steps as packing sealant cartridges in a corrugated cardboard box, removing them, and loading the caulking gun for sealant extrusion can now be conducted easily, reliably and rapidly. - Also, when the brand of sealant filled into cartridge body 11 is changed, only the printing on the heat-shrinkable resin film tube need be changed (assuming no printing appears on the cartridge body 11). This makes possible the extremely economically advantageous mass production of the same variety of cartridge body 11.
- Additionally, while a
nozzle 16 is screwed ontoextrusion part 14 in the preceding example, the present sealant cartridge also encompasses the case in which the extrusion part is itself directly formed into a nozzle. - With regard to sealant cartridges having a cylindrical cartridge body with an extrusion part on a shoulder, wherein the cartridge body is inserted into a tube of heat-shrinkable resin film and the resin is heat-shrunk, the sealant cartridge of the present invention is distinguished in that the outside diameter of the cartridge body increases in the direction of the tip while the inside diameter remains constant along the length; and in that the end edge of said resin film tube covers the outer margin of the shoulder of said cartridge body. As a consequence of said invention, the tube of heat-shrunk resin film will not slip or be displaced axially along the cartridge body, nor will it come off the cartridge body. Or in other words, the cartridge body will not be axially displaced and will not slip from the tube of heat-shrunk resin film. Furthermore, when the plunger is pushed from the rear toward the shoulder, the sliding operation will be smooth and leakage of sealant from between the plunger and cartridge body will be prevented. Consequently, packing and application operations using the present sealant cartridge will be easy, reliable, and rapid.
Claims (2)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985189207U JPH0235649Y2 (en) | 1985-12-09 | 1985-12-09 | |
JP189207/85 | 1985-12-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0228556A2 true EP0228556A2 (en) | 1987-07-15 |
EP0228556A3 EP0228556A3 (en) | 1988-11-09 |
EP0228556B1 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 (en) |
JP (1) | JPH0235649Y2 (en) |
KR (1) | KR870005777A (en) |
AU (1) | AU598494B2 (en) |
BR (1) | BR8606032A (en) |
DE (1) | DE3673368D1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2781468A1 (en) * | 1998-07-27 | 2000-01-28 | Pascal Chenneviere | Packaging for storing and measuring out cream product has graduated cylinder with dispensing piston |
EP1118553A1 (en) * | 1999-12-15 | 2001-07-25 | Riso Kagaku Corporation | Variable volume container |
US6899028B2 (en) | 1999-12-15 | 2005-05-31 | Riso Kagaku Corporation | Container |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002145289A (en) * | 2000-11-09 | 2002-05-22 | Hosokawa Yoko Co Ltd | Container for fluid material |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8512062U1 (en) * | 1985-04-24 | 1985-06-05 | Schieferdecker Gmbh & Co Kg, 4006 Erkrath | container |
EP0152373A2 (en) * | 1984-02-16 | 1985-08-21 | HILTI Aktiengesellschaft | Squeeze out piston for vessels |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU472890B1 (en) * | 1970-10-12 | 1972-04-13 | Masaaki Fujio | |
JPS591352A (en) * | 1982-06-15 | 1984-01-06 | 大倉工業株式会社 | Stretched blow vessel for aerated drink coated with multilayer film |
JPS629932A (en) * | 1985-07-05 | 1987-01-17 | Shinko Kagaku Kk | Cartridge made of plastics for sealant |
-
1985
- 1985-12-09 JP JP1985189207U patent/JPH0235649Y2/ja not_active Expired
-
1986
- 1986-11-20 DE DE8686116079T patent/DE3673368D1/en not_active Expired - Lifetime
- 1986-11-20 EP EP86116079A patent/EP0228556B1/en not_active Expired - Lifetime
- 1986-12-08 AU AU66188/86A patent/AU598494B2/en not_active Ceased
- 1986-12-08 BR BR8606032A patent/BR8606032A/en not_active IP Right Cessation
- 1986-12-09 KR KR860010496A patent/KR870005777A/en not_active Application Discontinuation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0152373A2 (en) * | 1984-02-16 | 1985-08-21 | HILTI Aktiengesellschaft | Squeeze out piston for vessels |
DE8512062U1 (en) * | 1985-04-24 | 1985-06-05 | Schieferdecker Gmbh & Co Kg, 4006 Erkrath | container |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2781468A1 (en) * | 1998-07-27 | 2000-01-28 | Pascal Chenneviere | Packaging for storing and measuring out cream product has graduated cylinder with dispensing piston |
EP1118553A1 (en) * | 1999-12-15 | 2001-07-25 | Riso Kagaku Corporation | Variable volume container |
US6578482B2 (en) | 1999-12-15 | 2003-06-17 | Riso Kagaku Corporation | Variable volume container |
US6899028B2 (en) | 1999-12-15 | 2005-05-31 | Riso Kagaku Corporation | Container |
Also Published As
Publication number | Publication date |
---|---|
BR8606032A (en) | 1987-09-15 |
AU6618886A (en) | 1987-06-11 |
EP0228556B1 (en) | 1990-08-08 |
AU598494B2 (en) | 1990-06-28 |
KR870005777A (en) | 1987-07-07 |
EP0228556A3 (en) | 1988-11-09 |
JPH0235649Y2 (en) | 1990-09-27 |
JPS6299551U (en) | 1987-06-25 |
DE3673368D1 (en) | 1990-09-13 |
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