CA2000714A1 - Method for manufacturing a tubular bag - Google Patents
Method for manufacturing a tubular bagInfo
- Publication number
- CA2000714A1 CA2000714A1 CA002000714A CA2000714A CA2000714A1 CA 2000714 A1 CA2000714 A1 CA 2000714A1 CA 002000714 A CA002000714 A CA 002000714A CA 2000714 A CA2000714 A CA 2000714A CA 2000714 A1 CA2000714 A1 CA 2000714A1
- Authority
- CA
- Canada
- Prior art keywords
- composite film
- polypropylene fabric
- polyethylene
- sealing
- heat
- 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.)
- Abandoned
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
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/52—Details
- B65D75/54—Cards, coupons, or other inserts or accessories
- B65D75/56—Handles or other suspension means
- B65D75/566—Hand holes or suspension apertures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
- B65B61/14—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for incorporating, or forming and incorporating, handles or suspension means in packages
-
- 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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/06—Handles
- B65D33/08—Hand holes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/74—Auxiliary operations
- B31B50/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
- B31B50/812—Applying tabs, patches, strips or strings on blanks or webs
- B31B50/8122—Applying patches
- B31B50/8123—Applying patches the blanks remaining stationary during application of the patches
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Making Paper Articles (AREA)
- Laminated Bodies (AREA)
Abstract
ABSTRACT
A method for manufacturing a tubular bag comprising a polyethylene/paper-polyethylene composite film is disclosed. The composite film is withdrawn in cycles from a delivery roll and shaped into a tube in a mold and, as such, led to a sealing station in which the filled bags are formed by affixing a cross seal, by applying a polypropylene fabric, coated on both sides with polyethylene, to the composite film and fastening the fabric thereto, shaping the composite film into a tube, heat-sealing the polypropylene fabric to the composite film on both sides and punching a handle cut-out through the composite film and polypropylene fabric.
A method for manufacturing a tubular bag comprising a polyethylene/paper-polyethylene composite film is disclosed. The composite film is withdrawn in cycles from a delivery roll and shaped into a tube in a mold and, as such, led to a sealing station in which the filled bags are formed by affixing a cross seal, by applying a polypropylene fabric, coated on both sides with polyethylene, to the composite film and fastening the fabric thereto, shaping the composite film into a tube, heat-sealing the polypropylene fabric to the composite film on both sides and punching a handle cut-out through the composite film and polypropylene fabric.
Description
~ ` 20007~4 This invention relates to a method ~or manufacturing a tubular bag comprising a polyethylene/paper-polyethylene composite film in which the composite film is withdrawn from a dellvery roll in cycles and shaped into a tube in a mold and conveyed, as such, to a sealing station in which the filled bags are formed by affixing a cross seal.
Tubular bags formed from a polyethylene/paper-polyethylene composite film can be used in numerous ways.
It is preferred that tubular bags of this type, which are made from a polyethylene/paper-polyethylene composite film, be provided with a handle cut-out to facilitate transportation.
Tubular bags made from a polyethylene/paper-polyethylene composite film manufactured hitherto have not been sufficiently sturdy to allow insertion of a handle cut-out; i.e. the handle cut-out would rip.
It is an object of the invention to provide a method for manufacturing a tubular bag from a polyethylene/paper-polyethylene composite film which includes a sturdy handle cut-out.
According to the invention, this object is sought to be achieved through the application of a polypropylene fabric, coated on both sides with polyethylene, to the composite film and fastening the fabric thereto, shaping the composite film into a tube, heat-sealing the polypropylene fabric, to the composite film on both sides, and punching a handle cut-out through the composite film and polypropylene fabric.
It is, moreover, preferable that the polypropylene fabric be pulled off from a continuous roll and cut off after it has been applied to the composite film.
In a preferred embodiment the polypropylene fabric is affixed to the composite film by thermal action.
Moreover, it is preferable that the heat-sealing of the polypropylene fabric take place at the same time as the heat-sealing of the edge seam.
In drawings which illustrate embodiments of the invention, ~000714 Fig. 1 is a schematic illustration of the manufacturing method, Fig. 2 is a detail illustration of the sealing die, Fig. 3 is a tubular bag leaving the sealing station, and Fig. 4 is the tubular bag after the profile sealing and handle have been punched.
In the manufacture of the tubular bag of the present invention, a polyethylene/paper-polyethylene composite film 10 is withdrawn from a delivery roll 12 in cycles. This composite film 10 is shaped, in a known manner, into a bag in a mold 14. After heat-sealing the edge seam extending along the length of the film, the bag is filled throughout the mold 14 and then provided with a cross seam in a sealing station 16, as a result of which individual bags are defined.
In order to provide the tubular bag with a handle cut-out, a polypropylene fabric, which is withdrawn from an additional delivery roll 20 and coated on both sides with polyethylene, is placed onto the composite film 10 pulled off from the delivery roll 12 and fastened to the composite film 10 by a sealing die 24. The fabric withdrawn from the roll 20 is cut by an appropriate device which, in the drawing, is schematically illustrated by scissors.
The film which is provided with a handle reinforcement 30 made of a polypropylene fabric is led in a conventional manner through mold 14 to sealing station 16.
The polypropylene fabric, which is coated on both sides with polyethylene, is heat-sealed to the surfaces of the polyethylene/paper-polyethylene composite film by appropriate means (not shown in detail in the drawings).
The heat-sealing is easily accomplished since, in the procedure, the polyethylene coating of the polypropylene fabric is merely heat-sealed to the polyethylene coating of the composite film.
Subsequently (or simultaneously with the heat-:. . ~ . .: . , ."~
""., ,. " ... ~ . . .
....
~, , ~. ~ - . .. . - , sealing), a handle cut-out 28 is punched through the two layers of the composite foil and the polypropylene fabric and a profile sealing is carried out.
Thus, according to the invention, a tubular bag made of a polyethylene/paper-polyethylene composite film i9 made which is provided with a handle cut-out which facilitates transportation of the bag. In this instance, the polypropylene fabric forms a reinforcement for the handle so that one does not have to fear that the bag will rip in the area of the handle.
The heat-sealing of the polypropylene fabric can take place at the same time as or subsequent to the heat-sealing of the edge seam. The bag can be finished either in the tubular bag machine or in a separate machine.
`, ' -, ,- '- ~-,'-''' ~',.
;~ '"' , '
Tubular bags formed from a polyethylene/paper-polyethylene composite film can be used in numerous ways.
It is preferred that tubular bags of this type, which are made from a polyethylene/paper-polyethylene composite film, be provided with a handle cut-out to facilitate transportation.
Tubular bags made from a polyethylene/paper-polyethylene composite film manufactured hitherto have not been sufficiently sturdy to allow insertion of a handle cut-out; i.e. the handle cut-out would rip.
It is an object of the invention to provide a method for manufacturing a tubular bag from a polyethylene/paper-polyethylene composite film which includes a sturdy handle cut-out.
According to the invention, this object is sought to be achieved through the application of a polypropylene fabric, coated on both sides with polyethylene, to the composite film and fastening the fabric thereto, shaping the composite film into a tube, heat-sealing the polypropylene fabric, to the composite film on both sides, and punching a handle cut-out through the composite film and polypropylene fabric.
It is, moreover, preferable that the polypropylene fabric be pulled off from a continuous roll and cut off after it has been applied to the composite film.
In a preferred embodiment the polypropylene fabric is affixed to the composite film by thermal action.
Moreover, it is preferable that the heat-sealing of the polypropylene fabric take place at the same time as the heat-sealing of the edge seam.
In drawings which illustrate embodiments of the invention, ~000714 Fig. 1 is a schematic illustration of the manufacturing method, Fig. 2 is a detail illustration of the sealing die, Fig. 3 is a tubular bag leaving the sealing station, and Fig. 4 is the tubular bag after the profile sealing and handle have been punched.
In the manufacture of the tubular bag of the present invention, a polyethylene/paper-polyethylene composite film 10 is withdrawn from a delivery roll 12 in cycles. This composite film 10 is shaped, in a known manner, into a bag in a mold 14. After heat-sealing the edge seam extending along the length of the film, the bag is filled throughout the mold 14 and then provided with a cross seam in a sealing station 16, as a result of which individual bags are defined.
In order to provide the tubular bag with a handle cut-out, a polypropylene fabric, which is withdrawn from an additional delivery roll 20 and coated on both sides with polyethylene, is placed onto the composite film 10 pulled off from the delivery roll 12 and fastened to the composite film 10 by a sealing die 24. The fabric withdrawn from the roll 20 is cut by an appropriate device which, in the drawing, is schematically illustrated by scissors.
The film which is provided with a handle reinforcement 30 made of a polypropylene fabric is led in a conventional manner through mold 14 to sealing station 16.
The polypropylene fabric, which is coated on both sides with polyethylene, is heat-sealed to the surfaces of the polyethylene/paper-polyethylene composite film by appropriate means (not shown in detail in the drawings).
The heat-sealing is easily accomplished since, in the procedure, the polyethylene coating of the polypropylene fabric is merely heat-sealed to the polyethylene coating of the composite film.
Subsequently (or simultaneously with the heat-:. . ~ . .: . , ."~
""., ,. " ... ~ . . .
....
~, , ~. ~ - . .. . - , sealing), a handle cut-out 28 is punched through the two layers of the composite foil and the polypropylene fabric and a profile sealing is carried out.
Thus, according to the invention, a tubular bag made of a polyethylene/paper-polyethylene composite film i9 made which is provided with a handle cut-out which facilitates transportation of the bag. In this instance, the polypropylene fabric forms a reinforcement for the handle so that one does not have to fear that the bag will rip in the area of the handle.
The heat-sealing of the polypropylene fabric can take place at the same time as or subsequent to the heat-sealing of the edge seam. The bag can be finished either in the tubular bag machine or in a separate machine.
`, ' -, ,- '- ~-,'-''' ~',.
;~ '"' , '
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method for manufacturing a tubular bag made of a polyethylene/paper-polyethylene composite film in which the composite film is pulled off in cycles from a delivery roll and shaped into a tube in a mold and is, as such, led to a sealing station in which the filled bags are formed by affixing a cross seal, including applying to the composite film a polypropylene fabric, coated on both sides with polyethylene, fastening the polypropylene fabric to the film prior to shaping it into a tube, shaping the composite film into a tube, heat-sealing the polypropylene fabric to the composite film on both sides, and punching a handle cut-out through the composite film and the polypropylene fabric.
2. A method as claimed in claim 1, wherein the polypropylene fabric is withdrawn from a continuous roll and is cut off after it has been applied to the composite film.
3. A method as claimed in claim 1, wherein the polypropylene fabric is fastened to the composite film by thermal action.
4. A method as claimed in claim 1 and 2, wherein the heat-sealing of the polypropylene fabric takes place simultaneously with the heat-sealing of the edge seam.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3835021A DE3835021A1 (en) | 1988-10-14 | 1988-10-14 | METHOD FOR PRODUCING A TUBE BAG |
| DEP3835021.1-27 | 1988-10-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2000714A1 true CA2000714A1 (en) | 1990-04-14 |
Family
ID=6365122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002000714A Abandoned CA2000714A1 (en) | 1988-10-14 | 1989-10-13 | Method for manufacturing a tubular bag |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0368428A1 (en) |
| JP (1) | JPH03504227A (en) |
| AU (1) | AU4320789A (en) |
| CA (1) | CA2000714A1 (en) |
| DE (1) | DE3835021A1 (en) |
| WO (1) | WO1990003923A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2858579B1 (en) * | 2003-08-04 | 2006-09-01 | Philippe Lamerant | PROCESS FOR MANUFACTURING A SOFT PACKAGING FOR CONTAINING FOR EXAMPLE ANIMAL LITTER |
| DE102013004367B4 (en) | 2013-03-12 | 2018-12-27 | Comtag Ag | Disposable container with additive for water for the treatment of objects |
| JP6956136B2 (en) * | 2017-07-28 | 2021-10-27 | 大王製紙株式会社 | Packaging bag |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2259866A (en) * | 1939-06-03 | 1941-10-21 | Stokes & Smith Co | Method of making containers |
| DE1479848B2 (en) * | 1964-08-24 | 1971-01-28 | Windmoller & Holscher 4540 Lenge rieh | Method and device for Her provide perforated carrier bags made of weldable material |
| US3597292A (en) * | 1966-07-04 | 1971-08-03 | Iwao Niwa | Process for effecting a bond between synthetic resin fiber fabrics and an apparatus therefor |
| DE2130133A1 (en) * | 1971-06-18 | 1972-12-21 | Linneborn Kg A | Method and device for filling pourable, liquid or pasty goods |
| FR2571687B1 (en) * | 1984-10-12 | 1987-04-24 | Minnesota Mining & Mfg | PACKAGING PROCESS UNDER RETRACTABLE FILM WITH TRANSPORT HANDLE, FILM FOR IMPLEMENTING IT AND PACKAGE CARRIED OUT WITH SUCH FILM, FOLLOWING THIS PROCESS |
| DE3629852A1 (en) * | 1986-09-02 | 1988-03-10 | Sengewald Karl H | Carrier bag made of thermoplastic film |
-
1988
- 1988-10-14 DE DE3835021A patent/DE3835021A1/en not_active Withdrawn
-
1989
- 1989-09-27 EP EP89250046A patent/EP0368428A1/en not_active Withdrawn
- 1989-10-03 AU AU43207/89A patent/AU4320789A/en not_active Abandoned
- 1989-10-03 WO PCT/DE1989/000639 patent/WO1990003923A1/en unknown
- 1989-10-03 JP JP1510198A patent/JPH03504227A/en active Pending
- 1989-10-13 CA CA002000714A patent/CA2000714A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| WO1990003923A1 (en) | 1990-04-19 |
| AU4320789A (en) | 1990-05-01 |
| JPH03504227A (en) | 1991-09-19 |
| DE3835021A1 (en) | 1990-04-19 |
| EP0368428A1 (en) | 1990-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued | ||
| FZDE | Discontinued |
Effective date: 19920413 |