EP1013567A1 - Rubbish bag - Google Patents
Rubbish bag Download PDFInfo
- Publication number
- EP1013567A1 EP1013567A1 EP98310654A EP98310654A EP1013567A1 EP 1013567 A1 EP1013567 A1 EP 1013567A1 EP 98310654 A EP98310654 A EP 98310654A EP 98310654 A EP98310654 A EP 98310654A EP 1013567 A1 EP1013567 A1 EP 1013567A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bag
- strip
- elastic strip
- neck
- elastic
- 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.)
- Withdrawn
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Classifications
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- 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
- B65F1/04—Refuse receptacles; Accessories therefor with removable inserts
- B65F1/06—Refuse receptacles; Accessories therefor with removable inserts with flexible inserts, e.g. bags or sacks
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- 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
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- 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
- B65D33/28—Strings or strip-like closures, i.e. draw closures
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- 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
Definitions
- this provides the bag with an open neck which is resiliently extensible so that it will grip the top rim of an associated bin to hold the bag in place.
- the elastic strip may extend across the gusset of a gusseted bag so that it is not stretched until the bag is opened or it may extend along a portion of the side wall of the bag. In this latter case the side wall tends to crumple up so making the empty unused bags difficult to handle and package.
- This specification also discloses, especially in the case of an elastic strip extending across a gusseted bag, that it is possible to use the elastic strip as a tie to close a filled bag by wrapping the elastic strip around its gathered together neck.
- a plastics bag includes at or towards its open end a strip of elastic connected to the bag at two spaced apart portions, the elastic strip extending between the spaced apart portions extending over an extent of half the periphery or less of the bag and being substantially relaxed when the open end of the bag is opened to its maximum extent.
- the elastic strip only extends around part of the neck of the bag and, for example, extends all or only part way along one side of the bag.
- the bag is placed in a bin and the open neck of the bag folded over the open end of the bin.
- the strip of elastic is then pulled over and across the open end of the bin to engage the folded over neck portion on the opposite side of the bag.
- the elastic strip has a length of half, or approaching half, of the periphery of the neck of the bag it is preferred that the elastic strip is formed into a complete loop which is then placed completely to surround the folded over neck of the bag.
- the strip is relatively short, for example, a quarter of the length of the periphery of the neck of the bag, it is preferred that the strip only extends around the remainder of the periphery of the folded over end of the neck of the bag with the exception of that between the direct path between the connection points of the elastic strip.
- connection points of the elastic strip may be enclosed in a flap or hem of the bag, particularly where the connection points being sandwiched between the layers of the bag assists in fixing them to the bag. If all of the elastic strip is enclosed in a hem an aperture or recess is provided to enable the elastic strip to be grasped and pulled over the open end of the bin.
- the elastic strip may be attached to the inside or the outside surface of the bag. When the strip is attached to the outside of the bag it may over lie an aperture or recess in the side wall of the bag so that when the top of the bag is turned over the rim of a bin, the elastic strip can be accessed through the aperture or recess. However this is not necessary because an elastic strip mounted on the outside of the bag, and hence the inside of the turned over top of the bag, can easily be pulled out from underneath the turned over top of the bag and then wrapped around it.
- connection points of the elastic strip are preferably attached by hot melt adhesive and particularly hot melt adhesive of the reactive or the rubbery elastomer type such as that known as Dispomelt® 322 made by National Starch and Chemical Company of 10 Finderne Avenue, New Jersey 08807-3300, USA.
- the connection points of the strip may be welded or adhered by other means to the bag or may be mechanically connected to the bag by being stapled or stitched to it, by being trapped in folds of the bag or by being threaded through a hole in the bag. In the latter cases the strip may be knotted or be held by an enlarged clamp or clip.
- the elastic strip it is convenient to have the elastic strip extending along the full extent of one side of the bag. If such a length of elastic is too long to provide sufficient tension to hold the bag in place on the rim of a bin it is possible to have connection points between the strip and the bag between the ends of the strip to shorten the effective length of the elastic strip.
- the elastic strip it is possible to use the elastic strip not only to hold the bag onto the open end of a bin but also to act as a tie to close the gathered together neck of the bag after it has been filled with rubbish.
- the elastic strip is pulled and wound around the gathered together neck of the bag with the final portion of elastic strip being formed into a loop and placed around the gathered together neck to seal the bag.
- the elastic strip can be made from any material of high elasticity and low plasticity such as natural or synthetic rubbers or thermoplastic elastomers.
- the elastic strip can be used in the form of a tape or a thread. Where the elastic strip is adhered to the bag it is preferred to have the elastic strip in the form of a tape because of the larger contact surface of the tape to thereby ensure a better adhesion to the bag.
- the cross section of the elastic strip and its length will typically vary and be adapted to the dimensions of the bag to ensure that the strip provides a sufficiently tight grip on the top of the bin when it was located in a bin to hold the bag securely in place. Typically the maximum elongation of a typical elastic strip will be 800%.
- the minimum length between the attachment points is likely to be a seventh of the periphery of the open neck of the bag.
- the length of the elastic strip is chosen in relation to the periphery of the bag to keep the elongation of the elastic strip to below 500% upon application of the strip to the rolled over top of the bag located in the bin.
- the elastic strip When the elastic strip is in the form of a tape it has a thickness between 100 microns and 1 mm and a width between 2 and 10 mm.
- a typical example of such a tape has a thickness between 0.18 mm and 0.6 mm and a width of 1 mm to 6 mm and preferably 2 or 3 mm.
- One example of elastic tape found to be effective has a thickness of 0.3 mm and a width of 6 mm.
- elastic threads such as Spandex are used they can vary in size from 500 to 1200 d/tex and can be used in single or multiple endages.
- One type of Spandex which is suitable is Lycra® made by E.I. du pont de Nemours and Company of 1007 Market Street, Wilmington, Delaware 19898, USA.
- threads are made from natural or synthetic elastomers such as polyisoprene, polychloroprene, styrene butadiene polymere or blends of such polymers, then sizes will typically be in a range of 20 to 80 count. The count is the number of threads that can be cut from the elastic strip of width 1" (25.4 mm).
- the bag may be made from PVC, polyethylene, polypropylene, or any other thermoplastic film or a combination of these.
- the elastic strip is made from polyisoprene rubber which is also biodegradable.
- the bag may be plain or gusseted and may include a tie or closure.
- the bag may have a wavy configuration of top edge which provides portions of the top edge that can more easily be tied together to close the bag or, alternatively, be in the form of a so-called "bunny bag" which includes two integral carrying handles, usually formed in gusseted side regions of the bag, which also double as ties to close the filled bag.
- Another form of tie that is sometimes included in gusseted bags is a separate thin strip of plastics material which is laid in the outside of a gusset and retained in place by being sealed to the weld forming the base of such a gusseted bag.
- This type of tie is merely removed from the outside of the gusset when the bag is full and then used as a separate tie to wrap around and close the gathered together neck of the filled bag. It is also common to provide separate closures in the form of metal-plastic or metal-paper strips.
- a further type of closure system that is in common use on rubbish bags is the type of rubbish bag which includes a folded over hem at its open end containing plastic draw tapes. Such draw tapes are exposed either at the top two corners of the bag or at recessed portions of the hem and are fitted to the bags as part of the bag manufacturing process. Such draw tapes may be fixed to the bag or be formed into a loop and merely held in the hem. When such a bag is full such draw tapes are then pulled to gather together the neck of the bag and then tied to close and seal the bag.
- This type of closure system provides a reliable closure system that forms part of the bag and therefore there is no risk of the tie being lost.
- only a single strip of elastic is provided which is attached at two spaced apart locations around the neck of the bag.
- two separate strips of elastic are provided around the neck of the bag and each strip is fixed at two spaced apart locations.
- more than one strip may be applied to one or both sides of the bag.
- a gusseted bag 1 of capacity 50 litres is made of polythene, has an open end 2 and a closed end including a weld 3.
- a piece of elastic strip 4 is fixed to the outside of one side of the bag 1 at each end by a hot melt adhesive 5 and is in a substantially relaxed state.
- the elastic strip 3 is 0.18 mm thick 3 mm wide and has a relaxed length of 400 mm.
- the periphery of the neck of the bag is 1500 mm so that in its relaxed state the length of the strip of elastic 4 is substantially less than the peripheral length of the open end of the bag 1.
- the bag 1 is placed inside a rubbish bin 6 and the open end 2 turned over around the outside of the rim of a generally square rubbish bin 6 to form a loose collar 7.
- the elastic strip 4 is gripped by the user and pulled downwards as shown schematically in Figure 3 - and then lifted and stretched over the collar of the bag 1 to grip it and hold it in place on the bin 6 - as shown in Figure 4.
- the elastic strip lies on the top of the collar 7 on three sides of the bin 6 and the tension in the elastic strip 4 holds the collar 7 tight on the fourth side of the bin.
- the strip of elastic 4 is formed into a complete loop which is then placed around the entire collar 7 as shown in Figure 5.
- the elastic strip 4 is released from around the collar 7 and the open neck 2 of the bag 1 is gathered together.
- the elastic strip 4 is pulled to tension it and then is wound around the gathered together neck 2 of the bag.
- the final remaining end or loop of the elastic strip 4 is placed over the gathered together neck 2 of the bag to hold it closed and to seal it, as shown in Figure 6.
- a blown tube of polyethylene film is first passed through a folding station in which the gussets are formed and then the gusseted tube is welded to provide the welds 3 at the bottom of each bag and perforated with perforations 8 to allow adjacent bags on a roll of such bags to be separated from one another by tearing along the perforations 8.
- the elastic strip 4 is fixed adjacent the perforations 8 by hot melt adhesive.
- the completed bags are then formed into a roll typically with the elastic strips 4 on the inside of the roll, ready for distribution and sale. It is possible in some situations to carry out the welding perforating and tape application step 4 all in a single operation by providing a single head which moves transversely across the tube of polyethylene.
- the second example of bag is a non-gusseted bag including an integral tie and is shown in Figure 8.
- the second example of bag 11 includes an open top 12 and a base 13 formed by a fold of plastic material.
- Welded seams 14 are formed along each side edge of the bag.
- a turned over hem 15 is formed and this turned over hem is welded to the side wall of the bag by a weld line indicated by reference numeral 16.
- Draw-tapes 17 are provided in the turned over hem 15 along each side and are welded to the bag at the welded seams 14. Cut-outs 18 are formed to enable the user to gain access to the draw-tapes 17.
- a piece of elastic 19 is fixed to the side wall of the bag 11 beneath the weld line 16 by a hot melt adhesive at attachment points 20.
- the elastic strip 3 is 0.18 mm thick and 3 mm wide and has a relaxed length of 570 mm.
- the periphery of the neck of the bag is 1360 mm and thus the elastic strip is nearly half the periphery of the bag.
- the bag 11 is placed inside a rubbish bin 21 and the open end 12 is turned over around the outside of the rim of the rubbish bin 21 to form a loose collar 22.
- the elastic strip 19 is gripped by the user and pulled downwards as shown schematically in Figure 10 and then formed into a complete loop 23 as shown in Figure 11. This complete loop 23 is then placed around the entire collar 22 as shown in Figure 12.
- the elastic strip 19 is released from around the collar 22 and the open neck 12 of the bag is then gathered together by pulling the draw tape 17 through the recesses 18. This results in the neck 12 of the bag 11 being gathered together as shown in Figure 13 and then the two loops of the draw tapes 17 can be formed into a knot to hold the bag closed and sealed.
- a tube 30 of blown polyethylene film is split longitudinally by slits 31 and 32 into two U-shaped portions 33 and 34. Each U-shaped portion is treated identically and, from now on only the treatment of one of these, portion 33, will be described.
- perforated portions 35 are formed towards the cut edges and these perforated portions 35 will form the recesses 18 in the completed bag.
- Draw-tapes 17 are then placed adjacent the cut edges and then the cut edges folded over to form the hem 15 as shown in Figure 16.
- the folded over hems 15 are then welded by a weld line 16 to enclose the draw tapes 17 within the hem 15.
- the portion 33 is then divided into individual bags by forming a pair of weld lines 14 spaced by a perforation 36 as shown most clearly in the enlarged portion of Figure 18.
- the elastic strip 19 is adhered to one side of the completed bags by holt melt adhesive at the attachment points 20.
- the completed bags are then formed into a roll, again with the elastic strip 19 on the inside of the roll before being packaged for distribution and sale. In use, the bags are separated from the roll by tearing them along perforation line 36.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Refuse Receptacles (AREA)
Abstract
Description
- Nowadays it is commonplace to line rubbish bins with plastics bags before depositing rubbish in them. This not only keeps the bin clean but also allows the rubbish deposited in the bag to be removed and disposed of easily when the bin is full. A perennial problem with this arrangement is the requirement to hold the open neck of the bag onto the top rim of the bin. If the open neck of the bag becomes displaced, rubbish thrown into the bin tends to collect between the outside of the bag and the bin. This leads to the bin getting dirty and it being difficult to remove the bag.
- Very many proposals have been made over the years to overcome this problem by using clips and clamping arrangements on the rim of the bin to hold the open neck of the bag or by providing an elasticated neck to the bag so that it grips the top rim of the bin. In spite of these very many proposals none have achieved significant commercial success. One of the proposals most likely to be able to be put into commercial production is discussed in EP-B-0542889. This arrangement describes a gusseted and non-gusseted bag which includes at least one strip of elastic fixed to the neck of the bag at two spaced apart points with the relaxed length of the elastic extending between these points being shorter than the spacing of the two points on the bag. Thus, this provides the bag with an open neck which is resiliently extensible so that it will grip the top rim of an associated bin to hold the bag in place. The elastic strip may extend across the gusset of a gusseted bag so that it is not stretched until the bag is opened or it may extend along a portion of the side wall of the bag. In this latter case the side wall tends to crumple up so making the empty unused bags difficult to handle and package. This specification also discloses, especially in the case of an elastic strip extending across a gusseted bag, that it is possible to use the elastic strip as a tie to close a filled bag by wrapping the elastic strip around its gathered together neck.
- According to this invention, a plastics bag includes at or towards its open end a strip of elastic connected to the bag at two spaced apart portions, the elastic strip extending between the spaced apart portions extending over an extent of half the periphery or less of the bag and being substantially relaxed when the open end of the bag is opened to its maximum extent.
- The elastic strip only extends around part of the neck of the bag and, for example, extends all or only part way along one side of the bag.
- To use a bag in accordance with this invention the bag is placed in a bin and the open neck of the bag folded over the open end of the bin. The strip of elastic is then pulled over and across the open end of the bin to engage the folded over neck portion on the opposite side of the bag. Where the elastic strip has a length of half, or approaching half, of the periphery of the neck of the bag it is preferred that the elastic strip is formed into a complete loop which is then placed completely to surround the folded over neck of the bag. Where the strip is relatively short, for example, a quarter of the length of the periphery of the neck of the bag, it is preferred that the strip only extends around the remainder of the periphery of the folded over end of the neck of the bag with the exception of that between the direct path between the connection points of the elastic strip.
- The connection points of the elastic strip may be enclosed in a flap or hem of the bag, particularly where the connection points being sandwiched between the layers of the bag assists in fixing them to the bag. If all of the elastic strip is enclosed in a hem an aperture or recess is provided to enable the elastic strip to be grasped and pulled over the open end of the bin. The elastic strip may be attached to the inside or the outside surface of the bag. When the strip is attached to the outside of the bag it may over lie an aperture or recess in the side wall of the bag so that when the top of the bag is turned over the rim of a bin, the elastic strip can be accessed through the aperture or recess. However this is not necessary because an elastic strip mounted on the outside of the bag, and hence the inside of the turned over top of the bag, can easily be pulled out from underneath the turned over top of the bag and then wrapped around it.
- The connection points of the elastic strip are preferably attached by hot melt adhesive and particularly hot melt adhesive of the reactive or the rubbery elastomer type such as that known as Dispomelt® 322 made by National Starch and Chemical Company of 10 Finderne Avenue, New Jersey 08807-3300, USA. Alternatively the connection points of the strip may be welded or adhered by other means to the bag or may be mechanically connected to the bag by being stapled or stitched to it, by being trapped in folds of the bag or by being threaded through a hole in the bag. In the latter cases the strip may be knotted or be held by an enlarged clamp or clip. For some constructions of bag it is convenient to have the elastic strip extending along the full extent of one side of the bag. If such a length of elastic is too long to provide sufficient tension to hold the bag in place on the rim of a bin it is possible to have connection points between the strip and the bag between the ends of the strip to shorten the effective length of the elastic strip.
- It is possible to use the elastic strip not only to hold the bag onto the open end of a bin but also to act as a tie to close the gathered together neck of the bag after it has been filled with rubbish. Typically, after the bag has been removed from the bin its neck is gathered together and then the elastic strip is pulled and wound around the gathered together neck of the bag with the final portion of elastic strip being formed into a loop and placed around the gathered together neck to seal the bag.
- The elastic strip can be made from any material of high elasticity and low plasticity such as natural or synthetic rubbers or thermoplastic elastomers. The elastic strip can be used in the form of a tape or a thread. Where the elastic strip is adhered to the bag it is preferred to have the elastic strip in the form of a tape because of the larger contact surface of the tape to thereby ensure a better adhesion to the bag. The cross section of the elastic strip and its length will typically vary and be adapted to the dimensions of the bag to ensure that the strip provides a sufficiently tight grip on the top of the bin when it was located in a bin to hold the bag securely in place. Typically the maximum elongation of a typical elastic strip will be 800%. Accordingly, the minimum length between the attachment points is likely to be a seventh of the periphery of the open neck of the bag. However, preferably the length of the elastic strip is chosen in relation to the periphery of the bag to keep the elongation of the elastic strip to below 500% upon application of the strip to the rolled over top of the bag located in the bin.
- When the elastic strip is in the form of a tape it has a thickness between 100 microns and 1 mm and a width between 2 and 10 mm. A typical example of such a tape has a thickness between 0.18 mm and 0.6 mm and a width of 1 mm to 6 mm and preferably 2 or 3 mm. One example of elastic tape found to be effective has a thickness of 0.3 mm and a width of 6 mm. When elastic threads such as Spandex are used they can vary in size from 500 to 1200 d/tex and can be used in single or multiple endages. One type of Spandex which is suitable is Lycra® made by E.I. du pont de Nemours and Company of 1007 Market Street, Wilmington, Delaware 19898, USA. When threads are made from natural or synthetic elastomers such as polyisoprene, polychloroprene, styrene butadiene polymere or blends of such polymers, then sizes will typically be in a range of 20 to 80 count. The count is the number of threads that can be cut from the elastic strip of width 1" (25.4 mm).
- The bag may be made from PVC, polyethylene, polypropylene, or any other thermoplastic film or a combination of these. When the rubbish bag is made from a biodegradable plastics material it is especially preferred that the elastic strip is made from polyisoprene rubber which is also biodegradable.
- The bag may be plain or gusseted and may include a tie or closure. In particular the bag may have a wavy configuration of top edge which provides portions of the top edge that can more easily be tied together to close the bag or, alternatively, be in the form of a so-called "bunny bag" which includes two integral carrying handles, usually formed in gusseted side regions of the bag, which also double as ties to close the filled bag. Another form of tie that is sometimes included in gusseted bags is a separate thin strip of plastics material which is laid in the outside of a gusset and retained in place by being sealed to the weld forming the base of such a gusseted bag. This type of tie is merely removed from the outside of the gusset when the bag is full and then used as a separate tie to wrap around and close the gathered together neck of the filled bag. It is also common to provide separate closures in the form of metal-plastic or metal-paper strips. A further type of closure system that is in common use on rubbish bags is the type of rubbish bag which includes a folded over hem at its open end containing plastic draw tapes. Such draw tapes are exposed either at the top two corners of the bag or at recessed portions of the hem and are fitted to the bags as part of the bag manufacturing process. Such draw tapes may be fixed to the bag or be formed into a loop and merely held in the hem. When such a bag is full such draw tapes are then pulled to gather together the neck of the bag and then tied to close and seal the bag. This type of closure system provides a reliable closure system that forms part of the bag and therefore there is no risk of the tie being lost.
- Preferably, only a single strip of elastic is provided which is attached at two spaced apart locations around the neck of the bag. Alternatively two separate strips of elastic are provided around the neck of the bag and each strip is fixed at two spaced apart locations. When more than one strip is provided they may be applied to one or both sides of the bag.
- Particular examples of a bag in accordance with this invention will now be described with reference to the accompanying drawings, in which:-
- Figure 1 is a diagrammatic perspective view of a first example of a bag;
- Figure 2 is perspective view of the top part of the bag in place in a bin;
- Figure 3 is a perspective view of the top part of the bag with the elastic beginning to be stretched; and,
- Figure 4 is a perspective view of the top part of the bag illustrating a first way of using the elastic strip to hold the bag in place;
- Figure 5 is a perspective view of the top part of the bag illustrating a second way of using the elastic strip to hold the bag in place;
- Figure 6 is a perspective view of the bag closed;
- Figure 7 is a diagrammatic illustration of the way in which the first example of bag is manufactured;
- Figure 8 is a perspective view of a second example of bag including a draw-string tie;
- Figure 9 is a perspective view of the top part of the second example of bag in place in a bin;
- Figure 10 is a perspective view of the top part of the second example of bag with the elastic beginning to be stretched;
- Figure 11 is a perspective view of the top part of the bag with the elastic stretched to substantially as maximum extent and formed into a loop;
- Figure 12 is a perspective view of the top part of the bag showing how the loop is placed around all of the turned over neck of the bag;
- Figure 13 is a perspective view of a closed second example of bag immediately before the draw-strings are knotted; and,
- Figures 14-19 are a series of perspective views illustrating how the second example of bag in accordance with this invention are manufactured.
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- A gusseted bag 1 of capacity 50 litres is made of polythene, has an
open end 2 and a closed end including aweld 3. A piece ofelastic strip 4 is fixed to the outside of one side of the bag 1 at each end by a hot melt adhesive 5 and is in a substantially relaxed state. Typically theelastic strip 3 is 0.18 mm thick 3 mm wide and has a relaxed length of 400 mm. The periphery of the neck of the bag is 1500 mm so that in its relaxed state the length of the strip of elastic 4 is substantially less than the peripheral length of the open end of the bag 1. - In use, the bag 1 is placed inside a
rubbish bin 6 and theopen end 2 turned over around the outside of the rim of a generallysquare rubbish bin 6 to form a loose collar 7. Theelastic strip 4 is gripped by the user and pulled downwards as shown schematically in Figure 3 - and then lifted and stretched over the collar of the bag 1 to grip it and hold it in place on the bin 6 - as shown in Figure 4. In this way the elastic strip lies on the top of the collar 7 on three sides of thebin 6 and the tension in theelastic strip 4 holds the collar 7 tight on the fourth side of the bin. Alternatively the strip of elastic 4 is formed into a complete loop which is then placed around the entire collar 7 as shown in Figure 5. - Once the bag 1 has been filled with rubbish, the
elastic strip 4 is released from around the collar 7 and theopen neck 2 of the bag 1 is gathered together. Theelastic strip 4 is pulled to tension it and then is wound around the gathered togetherneck 2 of the bag. The final remaining end or loop of theelastic strip 4 is placed over the gathered togetherneck 2 of the bag to hold it closed and to seal it, as shown in Figure 6. - To manufacture bags in accordance with the first example of this invention a blown tube of polyethylene film is first passed through a folding station in which the gussets are formed and then the gusseted tube is welded to provide the
welds 3 at the bottom of each bag and perforated withperforations 8 to allow adjacent bags on a roll of such bags to be separated from one another by tearing along theperforations 8. At the next station theelastic strip 4 is fixed adjacent theperforations 8 by hot melt adhesive. The completed bags are then formed into a roll typically with theelastic strips 4 on the inside of the roll, ready for distribution and sale. It is possible in some situations to carry out the welding perforating andtape application step 4 all in a single operation by providing a single head which moves transversely across the tube of polyethylene. - The second example of bag is a non-gusseted bag including an integral tie and is shown in Figure 8. The second example of
bag 11 includes an open top 12 and a base 13 formed by a fold of plastic material. Weldedseams 14 are formed along each side edge of the bag. At the top edge of the bag 12 a turned overhem 15 is formed and this turned over hem is welded to the side wall of the bag by a weld line indicated byreference numeral 16. Draw-tapes 17 are provided in the turned overhem 15 along each side and are welded to the bag at the welded seams 14. Cut-outs 18 are formed to enable the user to gain access to the draw-tapes 17. A piece of elastic 19 is fixed to the side wall of thebag 11 beneath theweld line 16 by a hot melt adhesive at attachment points 20. Typically theelastic strip 3 is 0.18 mm thick and 3 mm wide and has a relaxed length of 570 mm. The periphery of the neck of the bag is 1360 mm and thus the elastic strip is nearly half the periphery of the bag. - In use, the
bag 11 is placed inside arubbish bin 21 and theopen end 12 is turned over around the outside of the rim of therubbish bin 21 to form aloose collar 22. Theelastic strip 19 is gripped by the user and pulled downwards as shown schematically in Figure 10 and then formed into acomplete loop 23 as shown in Figure 11. Thiscomplete loop 23 is then placed around theentire collar 22 as shown in Figure 12. Once thebag 11 has been filled with rubbish theelastic strip 19 is released from around thecollar 22 and theopen neck 12 of the bag is then gathered together by pulling thedraw tape 17 through therecesses 18. This results in theneck 12 of thebag 11 being gathered together as shown in Figure 13 and then the two loops of thedraw tapes 17 can be formed into a knot to hold the bag closed and sealed. - A way of making the second example of a bag in accordance with this invention will now be described with reference to the diagrammatic Figures 14 to 19. Firstly, a
tube 30 of blown polyethylene film is split longitudinally by slits 31 and 32 into twoU-shaped portions portion 33, will be described. Firstly, perforatedportions 35 are formed towards the cut edges and theseperforated portions 35 will form therecesses 18 in the completed bag. Draw-tapes 17 are then placed adjacent the cut edges and then the cut edges folded over to form thehem 15 as shown in Figure 16. The folded overhems 15 are then welded by aweld line 16 to enclose thedraw tapes 17 within thehem 15. Theportion 33 is then divided into individual bags by forming a pair ofweld lines 14 spaced by aperforation 36 as shown most clearly in the enlarged portion of Figure 18. Finally theelastic strip 19 is adhered to one side of the completed bags by holt melt adhesive at the attachment points 20. The completed bags are then formed into a roll, again with theelastic strip 19 on the inside of the roll before being packaged for distribution and sale. In use, the bags are separated from the roll by tearing them alongperforation line 36.
Claims (10)
- A plastics bag (1) including at or towards its open end (2) a strip of elastic (4) connected to the bag at two spaced apart portions (5), the elastic strip (4) extending between the spaced apart portions (5) extending over an extent of half the periphery or less of the bag (1), characterised in that the elastic strip is relaxed when the open end (2) of the bag (1) is opened to its maximum extent.
- A bag according to claim 1, wherein the elastic strip (4) is attached to the outside surface of one side of the bag (1).
- A bag according to claim 1 or 2, wherein the elastic strip (4) is attached by a hot melt adhesive and particularly a hot melt adhesive of the reactive or the rubbery elastomer type.
- A bag according to any one of the preceding claims, wherein the elastic strip (4) is in the form of a tape having a thickness between 100 microns and 1 mm and a width between 2 and 10 mm, and preferably a thickness between 0.18 mm and 0.6 mm and a width between 1 mm and 6 mm.
- A bag in accordance with any one of the preceding claims, which also includes a tie (17) connected to, or forming part of the bag (1), to close and seal it.
- A bag according to claim 5, which includes a folded over hem (15) at its open end (12) containing plastic draw tapes (17), which are usable to gather together the neck of the bag (11) and then be tied to close and seal the bag (11).
- Use of a bag in accordance with any one of the preceding claims, wherein the bag (1) is placed in a bin (6) and the open neck (2) of the bag (1) is folded over the open end of the bin (6), the strip of elastic (4) then being pulled over and across the open end of the bin to engage the folded over neck portion (7) on the opposite side of the bag (1).
- Use of a bag in accordance with claim 7, wherein the elastic strip has a length of half, or approaching half, of the periphery of the neck (2) of the bag (1) and wherein the elastic strip (4) is formed into a complete loop which is then placed completely to surround the folded over neck (7) of the bag (1).
- Use of a bag in accordance with claim 7, wherein the strip only extends around the remainder of the periphery of the folded over end (7) of the neck of the bag (1) with the exception of that between the direct path between the connection points (5) of the elastic strip (4).
- Use of a bag in accordance with any one of the preceding claims, wherein the elastic strip (6) acts as a tie to close the gathered together neck (2) of the bag (1) after it has been filled with rubbish.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98310654A EP1013567A1 (en) | 1998-12-23 | 1998-12-23 | Rubbish bag |
AU21048/00A AU2104800A (en) | 1998-12-23 | 1999-12-22 | Rubbish bag |
PCT/EP1999/010506 WO2000039005A1 (en) | 1998-12-23 | 1999-12-22 | Rubbish bag |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98310654A EP1013567A1 (en) | 1998-12-23 | 1998-12-23 | Rubbish bag |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1013567A1 true EP1013567A1 (en) | 2000-06-28 |
Family
ID=8235228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98310654A Withdrawn EP1013567A1 (en) | 1998-12-23 | 1998-12-23 | Rubbish bag |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1013567A1 (en) |
AU (1) | AU2104800A (en) |
WO (1) | WO2000039005A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000073162A1 (en) * | 1999-05-26 | 2000-12-07 | Innovative Elastics Limited | Reclosable bags |
EP1266837A1 (en) * | 2001-06-14 | 2002-12-18 | Nuova Poliver di Oddone Colomba & C. S.n.c. | Expendable garbage bag |
WO2004041681A1 (en) * | 2002-10-31 | 2004-05-21 | Nordson Corporation | Elastic trash bag |
FR2858808A1 (en) * | 2003-08-13 | 2005-02-18 | Sp Metal | Garbage sack with sliding ties in upper edge sleeve has one tie of elastic material and other non-elastic |
FR2859982A1 (en) | 2003-09-24 | 2005-03-25 | Sp Metal | Bag for storing municipal solid waste, has elastic band extending on entire width of bag and connected to one side by connection zones, where one zone forms intermediate zone situated at distance from lateral ends |
EP1560765A1 (en) * | 2002-11-13 | 2005-08-10 | The Glad Products Company | Shirred elastic sheet material |
FR2873998A1 (en) * | 2004-08-06 | 2006-02-10 | Schweitzer Sas Soc Par Actions | Bag for use with container e.g. garbage can, has adhesive tapes arranged on outer sides of walls when bag is not disposed in container, where tapes unstuck from outer portion of walls for sticking onto container |
ITTV20080090A1 (en) * | 2008-07-02 | 2010-01-03 | Virosac Srl | POUCH BAG WITH CLOSING STRAP DEVICE AND METHOD OF CLOSURE AND PRODUCTION OF THE BAG. |
CN103612854A (en) * | 2013-12-11 | 2014-03-05 | 王湘铭 | Belt fastener type rubbish bin |
US8690429B1 (en) * | 2007-04-11 | 2014-04-08 | The Scensible Source Co., LLC | Liner bag for feminine hygiene waste receptacles |
WO2014174330A1 (en) | 2013-04-24 | 2014-10-30 | Virosac S.R.L. | Plastic bag with a tying device and production process of plastic bags with a tying device |
US9586726B1 (en) | 2015-09-21 | 2017-03-07 | Poly-America, L.P. | Drawstring trash bag |
CN109276030A (en) * | 2018-11-16 | 2019-01-29 | 曹欣悦 | A kind of desktop with rubbish storage function |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7946765B2 (en) | 2002-01-25 | 2011-05-24 | The Glad Products Company | Shirred elastic sheet material |
US6939042B2 (en) | 2003-03-28 | 2005-09-06 | The Glad Products Company | Bag with elastic strip and method of making the same |
US7077796B2 (en) | 2003-03-28 | 2006-07-18 | The Glad Products Company | Bag with elastic strip and method of making the same |
US20090183807A1 (en) * | 2007-08-16 | 2009-07-23 | Sadlier Claus E | More versatile flexible cover and method of manufacture |
US8435372B1 (en) | 2007-08-16 | 2013-05-07 | Les Industries Touch Inc. | Manufacture of versatile flexible cover using mandrel |
US8123885B2 (en) | 2009-02-17 | 2012-02-28 | Covermate, Inc. | Method of manufacturing flexible covers |
IT201900004623A1 (en) * | 2019-03-27 | 2020-09-27 | Undersiege S R L S Unipersonale | ERGONOMIC BAG TO FACILITATE THE RECOVERY OF DOMESTIC ANIMAL DEJECTION AND RELATED INDUSTRIAL MANUFACTURING PROCESS |
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US4778283A (en) * | 1986-12-30 | 1988-10-18 | Mobil Oil Corporation | Draw band bag |
US5232118A (en) * | 1992-07-16 | 1993-08-03 | Dorothy Samuel | Elastically ribbed bag for lining trash containers |
EP0542889B1 (en) * | 1990-07-31 | 1994-09-07 | Minnesota Mining And Manufacturing Company | Flexible bag closure system |
FR2715132A1 (en) * | 1994-01-17 | 1995-07-21 | Montamat Elisabeth | Fastening strap for plastics dustbin bags |
CH687142A5 (en) * | 1996-02-16 | 1996-09-30 | Polypac Ag | Bag, esp. rubbish or collection bag |
DE19521073A1 (en) * | 1995-06-09 | 1997-01-16 | Ahrens Geb Reuleke Elvira | Refuse bag for fixing to edge of dustbin - has holding adhesive along top and flat grips, so that bag may be placed over dustbin edge |
US5732845A (en) * | 1996-05-20 | 1998-03-31 | Hold It Products Corporation | Securing system |
-
1998
- 1998-12-23 EP EP98310654A patent/EP1013567A1/en not_active Withdrawn
-
1999
- 1999-12-22 AU AU21048/00A patent/AU2104800A/en not_active Abandoned
- 1999-12-22 WO PCT/EP1999/010506 patent/WO2000039005A1/en active Search and Examination
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BE716039A (en) * | 1968-05-31 | 1968-10-16 | ||
US4778283A (en) * | 1986-12-30 | 1988-10-18 | Mobil Oil Corporation | Draw band bag |
EP0542889B1 (en) * | 1990-07-31 | 1994-09-07 | Minnesota Mining And Manufacturing Company | Flexible bag closure system |
US5232118A (en) * | 1992-07-16 | 1993-08-03 | Dorothy Samuel | Elastically ribbed bag for lining trash containers |
FR2715132A1 (en) * | 1994-01-17 | 1995-07-21 | Montamat Elisabeth | Fastening strap for plastics dustbin bags |
DE19521073A1 (en) * | 1995-06-09 | 1997-01-16 | Ahrens Geb Reuleke Elvira | Refuse bag for fixing to edge of dustbin - has holding adhesive along top and flat grips, so that bag may be placed over dustbin edge |
CH687142A5 (en) * | 1996-02-16 | 1996-09-30 | Polypac Ag | Bag, esp. rubbish or collection bag |
US5732845A (en) * | 1996-05-20 | 1998-03-31 | Hold It Products Corporation | Securing system |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000073162A1 (en) * | 1999-05-26 | 2000-12-07 | Innovative Elastics Limited | Reclosable bags |
EP1266837A1 (en) * | 2001-06-14 | 2002-12-18 | Nuova Poliver di Oddone Colomba & C. S.n.c. | Expendable garbage bag |
WO2004041681A1 (en) * | 2002-10-31 | 2004-05-21 | Nordson Corporation | Elastic trash bag |
US6921202B2 (en) | 2002-10-31 | 2005-07-26 | Nordson Corporation | Elastic trash bag |
EP1560765A4 (en) * | 2002-11-13 | 2008-07-23 | Glad Products Co | Shirred elastic sheet material |
AU2003270838B2 (en) * | 2002-11-13 | 2010-03-04 | The Glad Products Company | Shirred elastic sheet material |
EP1560765A1 (en) * | 2002-11-13 | 2005-08-10 | The Glad Products Company | Shirred elastic sheet material |
FR2858808A1 (en) * | 2003-08-13 | 2005-02-18 | Sp Metal | Garbage sack with sliding ties in upper edge sleeve has one tie of elastic material and other non-elastic |
EP1508526A1 (en) * | 2003-08-13 | 2005-02-23 | SP Metal | Bag with composite drawstring |
FR2859982A1 (en) | 2003-09-24 | 2005-03-25 | Sp Metal | Bag for storing municipal solid waste, has elastic band extending on entire width of bag and connected to one side by connection zones, where one zone forms intermediate zone situated at distance from lateral ends |
WO2005030612A1 (en) * | 2003-09-24 | 2005-04-07 | Sphere | Bag having an elastic band, and method for the production thereof |
US8556508B2 (en) | 2003-09-24 | 2013-10-15 | Sphere | Bag having an elastic band, and method for the production thereof |
FR2873998A1 (en) * | 2004-08-06 | 2006-02-10 | Schweitzer Sas Soc Par Actions | Bag for use with container e.g. garbage can, has adhesive tapes arranged on outer sides of walls when bag is not disposed in container, where tapes unstuck from outer portion of walls for sticking onto container |
US8690429B1 (en) * | 2007-04-11 | 2014-04-08 | The Scensible Source Co., LLC | Liner bag for feminine hygiene waste receptacles |
US9957105B2 (en) | 2007-04-11 | 2018-05-01 | The Scensible Source Co., LLC | Liner bag for feminine hygiene waste receptacles |
ITTV20080090A1 (en) * | 2008-07-02 | 2010-01-03 | Virosac Srl | POUCH BAG WITH CLOSING STRAP DEVICE AND METHOD OF CLOSURE AND PRODUCTION OF THE BAG. |
EP2141082A1 (en) * | 2008-07-02 | 2010-01-06 | Virosac Srl | Bag for waste with closing string device and closing method and production method of the bag |
WO2014174330A1 (en) | 2013-04-24 | 2014-10-30 | Virosac S.R.L. | Plastic bag with a tying device and production process of plastic bags with a tying device |
CN103612854A (en) * | 2013-12-11 | 2014-03-05 | 王湘铭 | Belt fastener type rubbish bin |
US9586726B1 (en) | 2015-09-21 | 2017-03-07 | Poly-America, L.P. | Drawstring trash bag |
CN109276030A (en) * | 2018-11-16 | 2019-01-29 | 曹欣悦 | A kind of desktop with rubbish storage function |
Also Published As
Publication number | Publication date |
---|---|
WO2000039005A1 (en) | 2000-07-06 |
AU2104800A (en) | 2000-07-31 |
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