EP0880458A1 - Bag, in particular a rubbish or collection bag, and process for the manufacture thereof - Google Patents
Bag, in particular a rubbish or collection bag, and process for the manufacture thereofInfo
- Publication number
- EP0880458A1 EP0880458A1 EP97900541A EP97900541A EP0880458A1 EP 0880458 A1 EP0880458 A1 EP 0880458A1 EP 97900541 A EP97900541 A EP 97900541A EP 97900541 A EP97900541 A EP 97900541A EP 0880458 A1 EP0880458 A1 EP 0880458A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sack
- longitudinal side
- seams
- welded
- connection points
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F1/00—Refuse receptacles; Accessories therefor
- B65F1/0006—Flexible refuse receptables, e.g. bags, sacks
-
- 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
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/1616—Elements constricting the neck of the bag
- B65D33/165—Flexible elongated elements integral with or attached to bags or sacks ; Fastening thereof to the bag before closing
Definitions
- Sack in particular waste or collecting sack and process for its production
- the invention relates to a sack, in particular garbage or collecting sack according to the preamble of claim 1.
- the closure band fixedly arranged on the outside of the sack is intended to enable the sack to be closed without additional aids being required.
- a generic waste bag made of plastic has become known, in which a closure band is arranged on each side wall. To close the filled bag, these tapes are cut near one weld seam, while they are still connected to the other weld seam. The free ends of the two tapes can then be wrapped around the gathered bag opening and linked together.
- a fastener tape is only arranged on one side of the sack. To close the opening, however, the fastener tape is first pulled through an opening which is arranged at the level of the fastener tape in both side walls. After the sack opening has been gathered together in this way, the free band loop is knotted.
- the high tear resistance is also intended to enable a novel use of the fastener tape without fear of tearing off the fastener tape during manipulation.
- the fastener tape is detachably connected to a side wall at at least one secondary connection point.
- three to four secondary connection points are preferably arranged over the entire length of the fastener tape. This measure ensures that the fastener tape is always held flat on the side wall and does not twist.
- the secondary connection point can be a hot melt connection that can be easily detached.
- the sealing tape advantageously consists of a material that has a higher specific tensile strength than the material from which the sack is made. Depending on the dimensioning of the sack, the closure tape can have a width of 3 to 6 cm.
- the fastening tape can also be welded to the side seam on the longitudinal side seams. However, this additional welding does not increase the tensile strength so much, but rather cleanly closes the tape on the longitudinal side seam.
- the tear resistance can be considerably improved if the fastener tape is continuously welded to both side walls at the primary connection points. Although this leads to a slight constriction of the sack, this does not interfere in this area.
- the shape of the weld can also make a significant contribution to improving the tensile strength.
- a convex base of the weld, starting from the longitudinal side seams, has proven to be particularly advantageous.
- the invention also relates to a method for producing a sack according to the preamble of claim 9.
- the attachment of the separate welding points next to the longitudinal side seams places special demands on the method.
- a particularly efficient production is achieved according to the invention by a method which has the features in claim 9.
- the fastener tape can now be welded particularly easily in the area of the longitudinal side seams provided at primary connection points with at least one side wall.
- This weld can be dimensioned can be chosen arbitrarily and it also advantageously detects the second side wall facing away from the fastener tape. Only at the end are the longitudinal side seams welded, and their relative position to the separate welding points at the primary connection points can be chosen as desired.
- the welds at the primary connection points can each be subdivided by a longitudinal side seam, so that each weld fixes the sealing tape of sacks adjacent to one another in the production process.
- the releasable connection of the fastener tape according to the first method step can take place at secondary connection points, the primary connection points each advantageously lying between two secondary connection points.
- the secondary connection points not only facilitate the production process, but later they also play an important role in the use of the sack, in that, as mentioned above, they hold the sealing tape in the correct relative position.
- the longitudinal side seams can be formed as separating seams which simultaneously separate the individual bags from the endless belt.
- the longitudinal side seams can also be double seams, between which a perforation is made, the web then being wound up into a roll.
- FIG. 1 shows a perspective illustration of an opened sack with the features of the invention
- FIG. 2a-2e a schematic representation of the closing process on a sack according to FIG. 1,
- FIG. 3 shows a schematic illustration of a first sequence of the production process
- Figure 4 is a schematic representation of a second sequence of the manufacturing process
- Figure 5 is a schematic representation of an alternative second sequence of the manufacturing process.
- FIG. 1 shows a sack 1 with two approximately rectangular side walls 7a and 7b, which are welded to one another on longitudinal side seams 8a and 8b.
- the two side walls consist of a single, folded blank, so that the bottom 3 of the sack 1 is seamless. However, the bottom could also be formed by a weld seam.
- a closure band 5 is fastened on the side wall 7a parallel to the upper edge.
- the fastening takes place on the one hand on separate welds at primary connection points 6a and 6b and on the other hand at three to four secondary connection points 9.
- the fastening tape 5 is connected to the side wall 7a and 7b in a tear-proof manner.
- the secondary connection points are only hot melt connections that can be easily detached.
- the welds 4 have an approximately convex basic shape, e.g. with a radius that corresponds to approximately half the width of the fastener tape.
- the sack 1 is made, for example, of polyethylene and the sealing tape 5 is made of a material that is higher has specific tensile strength, for example made of HDPE or a composite.
- the weld at the primary connection points 6a and 6b is dimensioned such that the tensile strength at the weld point is greater than at any other point on the sack.
- the closure band can have a width of, for example, 5 cm and is approximately 15 cm from the edge 10 of the opening 2 in relation to its center.
- FIGS. 2a to 2e schematically show the closing process on a sack, for example, which is wrapped and filled in a refuse container.
- the sealing tape 5 is detached from the side wall of the sack at the secondary connection point 9.
- the opening 2 of the sack is gathered together and at the same time a loop is formed with the closure band 5.
- FIG. 2c shows how the loop formed by the closure band 5 is wound around the gathered opening 2 of the bag 1.
- the end of the loop is pulled under the beginning of the loop and pushed up in the direction of the arrow, so that a knot 12 can be tightened according to FIG. 2e.
- the closed sack can now be lifted up on the free carrying loop 13, it being irrelevant if the tensile forces are not transmitted to the sack exclusively via the knot but also via the primary connection points.
- FIG. 3 An endless half hose 14 is advanced in the direction of the arrow. Hot melt points 16 are applied to an outside of a nozzle 15 at regular intervals. Subsequently, a sealing tape 5 is continuously unwound from a roll 17 and pressed against the hot melt points 16 parallel to the half-tube 14 by suitable means, not shown here. Each hot melt point 16 corresponds to one Secondary connection point 9 on the sack 1 according to FIG. 1.
- a sword 18 is guided under the half hose 14 from the open side.
- the sword 18 could also be inserted into the half hose.
- the sealing band 5 is welded against both side walls of the half-tube.
- Figure 4 shows the first alternative of a second sequence of the method.
- a longitudinal side seam 8a or 8b is welded by means of a separating seam welding device 20, the half tube 14 being severed at the same time.
- the longitudinal side seams are placed on a weld 4 such that it is divided. After the separation, the individual bags 1 are placed on a stack 21.
- FIG. 5 shows a second alternative of a second process sequence.
- the half-tube 14 with the fastening tape 5 fastened thereon is fed to a double-seam welding device 22.
- There the two side walls of the half-tube are welded to one another with a double seam and at the same time a perforation 23 is made between the seams.
- the finished bags remain connected to one another via a predetermined tear line and can then be wound onto a roll 24.
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH419/96 | 1996-02-16 | ||
CH00419/96A CH687142A5 (en) | 1996-02-16 | 1996-02-16 | Bag, esp. rubbish or collection bag |
CH41996 | 1996-02-16 | ||
PCT/CH1997/000029 WO1997029967A1 (en) | 1996-02-16 | 1997-01-29 | Bag, in particular a rubbish or collection bag, and process for the manufacture thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0880458A1 true EP0880458A1 (en) | 1998-12-02 |
EP0880458B1 EP0880458B1 (en) | 1999-10-13 |
Family
ID=4186605
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97900541A Expired - Lifetime EP0880458B1 (en) | 1996-02-16 | 1997-01-29 | Bag, in particular a rubbish or collection bag, and process for the manufacture thereof |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0880458B1 (en) |
AT (1) | ATE185531T1 (en) |
AU (1) | AU1299797A (en) |
CH (1) | CH687142A5 (en) |
DE (1) | DE59700554D1 (en) |
WO (1) | WO1997029967A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2806384A1 (en) | 2000-03-17 | 2001-09-21 | Marie Magdeleine Crouze Bancet | Closure for plastic bag, e.g. for hospital waste, comprises gathered band welded to top of bag, section of band being detachable and threaded through hole and drawn tight to close bag |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1013567A1 (en) * | 1998-12-23 | 2000-06-28 | Innovative Elastics Ltd. | Rubbish bag |
FR2859982B1 (en) | 2003-09-24 | 2006-02-03 | Sp Metal | ELASTIC BAND BAG AND METHOD FOR MANUFACTURING THE SAME |
ITBA20120020A1 (en) * | 2012-03-23 | 2013-09-24 | Pipeplast Srl | PLASTIC BAG WITH CLOSING STRIP |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH483343A (en) * | 1968-12-06 | 1969-12-31 | Rothrister Ag | Procedure for attaching a sealing tape to a plastic bag |
CH553703A (en) * | 1972-07-13 | 1974-09-13 | Ver Papierwarenfab Ag | Plastic rubbish bag - having closure for the opening and formed from strips of heat-weldable matl. |
US3974960A (en) * | 1972-09-11 | 1976-08-17 | Mitchell John R | Plastic trash bag tie bands |
US4778283A (en) * | 1986-12-30 | 1988-10-18 | Mobil Oil Corporation | Draw band bag |
CA2008704C (en) * | 1990-01-26 | 1993-05-25 | Mavie Shu Chuen Mak | Bag with attached tie means |
-
1996
- 1996-02-16 CH CH00419/96A patent/CH687142A5/en not_active IP Right Cessation
-
1997
- 1997-01-29 EP EP97900541A patent/EP0880458B1/en not_active Expired - Lifetime
- 1997-01-29 WO PCT/CH1997/000029 patent/WO1997029967A1/en active IP Right Grant
- 1997-01-29 AU AU12997/97A patent/AU1299797A/en not_active Abandoned
- 1997-01-29 DE DE59700554T patent/DE59700554D1/en not_active Expired - Fee Related
- 1997-01-29 AT AT97900541T patent/ATE185531T1/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9729967A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2806384A1 (en) | 2000-03-17 | 2001-09-21 | Marie Magdeleine Crouze Bancet | Closure for plastic bag, e.g. for hospital waste, comprises gathered band welded to top of bag, section of band being detachable and threaded through hole and drawn tight to close bag |
Also Published As
Publication number | Publication date |
---|---|
AU1299797A (en) | 1997-09-02 |
WO1997029967A1 (en) | 1997-08-21 |
DE59700554D1 (en) | 1999-11-18 |
CH687142A5 (en) | 1996-09-30 |
EP0880458B1 (en) | 1999-10-13 |
ATE185531T1 (en) | 1999-10-15 |
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