EP3891080A1 - Sack und folienschlauch zur herstellung eines derartigen sackes - Google Patents
Sack und folienschlauch zur herstellung eines derartigen sackesInfo
- Publication number
- EP3891080A1 EP3891080A1 EP19816619.1A EP19816619A EP3891080A1 EP 3891080 A1 EP3891080 A1 EP 3891080A1 EP 19816619 A EP19816619 A EP 19816619A EP 3891080 A1 EP3891080 A1 EP 3891080A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sack
- lines
- weakness
- tear strip
- film tube
- 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
- 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
- B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
- B65D75/5827—Tear-lines provided in a wall portion
- B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
- B65D75/5844—Tear-lines provided in a wall portion for tearing out a portion of the wall the portion of the wall being a narrow strip, e.g. between lines of weakness
-
- 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
- B65D33/065—Integral handles
-
- 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
- B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
- B65D75/06—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes
- B65D75/12—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes with the ends of the tube closed by flattening and heat-sealing
Definitions
- the invention relates to a sack with a filling space for bulk material, which is limited by a lower floor, a circumferential wall and an upper filling space end facing away from the lower floor.
- the sack has a tear strip to release an opening field of the sack from an upper one
- a line of weakness and a lower line of weakness is limited, both lines of weakness running parallel to the upper end of the filling space and the upper line of weakness positioned between the upper end of the filling space and the lower line of weakness.
- Such a sack is known for example from EP 0 620 157 B1.
- the lines of weakness and also a front line which runs perpendicular to the two lines of weakness and where the tear strip begins, are each perforated.
- the front line perforation is pressed in with a finger of the person opening the sack and then the tear strip is gripped in this area by the inside of the sack material and from the outside of the sack material with the thumb and forefinger and torn open along the lines of weakness.
- the opening is not clean because the operator comes into contact with the contents of the sack when it is torn open and which the perforation along the forehead line does not always follow correctly.
- the invention has for its object to provide a sack of the type mentioned with improved opening.
- the invention is achieved by a sack of the type mentioned at the outset, in which the sack has a longitudinal seam running transversely to the upper filling space closure, the upper and lower lines of weakness beginning in the region of the longitudinal seam and the longitudinal seam being formed weaker in the region between the two lines of weakness is as above the upper line of weakness and below the lower line of weakness.
- the tear strip thus adheres less strongly to the sack material located in the area of the longitudinal seam below the tear strip and can be easily fixed between the thumb and index finger of an operator, first removed from the sack material located below the tear strip in the area of the longitudinal seam and then torn along the lines of weakness. The operator's fingers do not touch the contents in the sack.
- the bag advantageously has an interfering substance which hinders the welding process in the region of the longitudinal seam between the two lines of weakness.
- This is particularly preferably formed by a varnish which, in the region of the longitudinal seam between the lines of weakness in the manner of a grid, either on the side of the tear strip facing the filling space or on the side of the filling strip. side facing away from the bag material below the tear strip is brought up.
- the paint is preferably chosen so that adhesion of an additional melt to form the longitudinal seam on the paint is significantly weaker than on the remaining sack material in the area of the longitudinal seam.
- a flag is arranged at the beginning of the tear strip between the two weakening lines, said flag going beyond the longitudinal seam against the tear direction and not adhering to the material of the wall of the sack.
- an operator can grip the start of the tear strip particularly easily and open the tear strip in the tear direction along the weakening lines.
- the flag is particularly preferably formed in that the upper film is circumferentially slightly above the longitudinal seam is pulled over the lower film web. This creates a film strip along the longitudinal seam, which is not connected to the film underneath.
- the two lines of weakness then also go beyond the longitudinal seam to the side end of the upper film of the sack.
- the lines of weakness do not extend to the lower film in the area of the longitudinal seam.
- the positioning of the beginning of the weakening lines in the area of the longitudinal seam is to be understood in the sense of this invention that the weakening lines either begin where the longitudinal seam runs or, if the aforementioned flag is formed, slightly extend beyond the longitudinal seam against the tear direction.
- the sack material in the region of the ends of the weakening lines and the material and the width of the tear strip are designed in such a way that the resistance to tearing of the tear strip beyond the ends of the weakening lines is greater than the resistance against tearing the tear strip off the sack.
- the sack can only be opened up to the end of the weakening lines and not beyond, since if the tear strip is pulled further, the sack does not open further, but the tear strip tears off.
- the ends of the weakening lines are understood to mean the side of the weakening lines to which the tear strip is opened to expose the opening field during the tearing along the weakening lines.
- the sack consists of a film which can be constructed in one or more layers.
- the sack is a gusseted sack with a front and a rear sides, which are connected to one another via a first side wall and a second side wall, the side walls being formed by side gussets.
- the lines of weakness extend across at least 80% of the width of the front or the width of the back of the sack, in particular over the entire width of the front or over the entire width of the back.
- the area of the gussets remains because free from the lines of weakness. This configuration forms the desired V-shaped chute below the opening panel of the egg nem gusseted bag due to the positioning of the lower line of weakness especially before geous.
- the upper filling space closure therefore has, in a particularly preferred embodiment of the invention, a fingertip contact area on the inside thereof facing the filling space.
- the fingertip contact area is formed by a material bend between a first leg and a second leg of the sack, the first leg extending from the upper line of weakness to the material bend and the second leg adjoining it starting from the material bend.
- the material fold can either be formed in a one-piece film by a fold or the introduction of a seam, or else in that two films are connected to one another with a sealing seam.
- the first leg and the second leg of the sack are each formed by the sack material surrounding the filling space.
- the sack is dimensioned in such a way and the tear strip is positioned so that the two legs in the state with the opened opening field of a sack filled with filling material when the sack is carried by engaging in the opening field enclose an angle of no more than 135 °.
- the sack is carried, for example, by the hand of an operator, that is to say an operator reaches into the opening area with one hand and the first leg rests on the hand of the operator, while the sack hangs down from the hand when carried by the water.
- the dimensioning of the sack is thus chosen such that an angle of not more than 135 ° is formed in the aforementioned state of the sack. It has been shown that this configuration enables the bag to be carried safely by engaging in the open opening field.
- the distance of the upper weakening line to the material fold is advantageously 30 to 65 mm, particularly preferably 45 to 55 mm, and the distance of the lower weakening line to the upper weakening line is 15 to 25 mm.
- the circumferential wall of the sack has a front and a back, both lines of weakness are centered either on the front or on the back of the sack and stretch over 15 to 35% of the circumference of the sack.
- the sack is opened along the lines of weakness, the position of the lines of weakness specifying the position of the opening field in the sack.
- the opening in this case has the shape of a rectangle in the open state with a height corresponding to the distance between the weakening lines and a length corresponding to the length of the two weakening lines.
- the opening field is centered either on the front or on the back of the sack and extends over 15 to 35% of the circumference of the sack.
- the sack material between the upper material fold and the upper line of weakness and thus the upper edge of the opening field together with the material of the upper material fold for the hand of the other Arms of the person throwing the sack can be used.
- the resulting handle is voluminous and at the same time firm enough to allow the bag to be easily poured out. If the upper line of weakness and thus the upper edge of the opening panel is moved further towards the bottom of the sack, the fingers of the person to be operated no longer attack the upper material bend, which increases the stability of the handle and the person discharging the sack of control over the Sack loses.
- the handle becomes very narrow and uncomfortable. In this case, especially when the sack is heavier, an operator would have to carry the weight primarily with the fingertips and no longer with the entire hand.
- the weight of the sack can be more easily balanced when pouring out.
- a V-shaped chute is created along the lower edge of the opening field, which results from the lower line of weakness, with which a targeted metering and pouring direction is possible.
- a person pouring out the sack grabs the sack with the hand of the first arm below the bottom of the sack. With the hand of the second arm, the person reaches into the opening area and takes the sack material between the upper edge of the opening area and the material bend, as well as the material bend itself, in the manner of a stable handle. As soon as the person holds the sack at an angle by lifting the floor or lowering the opening field, the lower edge of the opening field forms a V-shaped chute that can be turned outwards, through which the bulk material can be dispensed very easily and well.
- the upper former filling space termination is formed in a particularly preferred embodiment of the invention from a transverse seam, the transverse seam also forming the material fold in the interior of the sack. This configuration is particularly present when the sack is a gusseted sack.
- the upper filling space closure is formed by an upper floor and the material fold is formed by the transition from the wall around the sack to the upper floor.
- the material fold can either be a fold in a film or the measure
- the material of the sack is additionally sealed in this area. This configuration is particularly present when the sack is a valve sack.
- the invention is also achieved by a film tube for the production of bags of the aforementioned type.
- the film tube here has a multiplicity of tear strips arranged in parallel at mutually constant intervals to release one opening field each.
- the tear strips are each bounded by an upper line of weakness and a lower line of weakness.
- the film tube is formed by a film web, which is turned into a tube, the film tube having a longitudinal seam running longitudinally to the film tube, which connects the two superimposed lateral ends of the film web to one another, as a result of which the film tube is formed. Accordingly, the wall of the aforementioned bags is of course designed to catch.
- This configuration of the film tube can be used to produce a sack according to the invention of the aforementioned type from the film tube with the advantages mentioned in connection with the sacks according to the invention.
- a flag is arranged in a particularly preferred embodiment of the invention between the two lines of weakness associated with this tear strip, which goes against the tear direction on the longitudinal seam and does not adhere to the material of the wall of the film tube.
- the sacks according to the invention resulting from the film tube according to the invention thereby have those with the the aforementioned flags in connection with the bags described advantages when opening the opening field.
- this has a plurality of material folding areas arranged at constant intervals, each transverse to the longitudinal extension of the film tube, for introducing a material folding, each of which is assigned to a tear strip.
- the distance between the respective upper weakening line to the assigned material folding area is 30 to 65 mm, in particular 45 to 55 mm, and the distance between the lower weakening line and the upper weakening line of each tear strip is 15 to 25 mm.
- the weakening line on the film tube in its flat state is centered on and extends over 15 to 35% of the circumference of the film tube.
- the films of the film tube are formed in the region of the ends of the weakening lines and the material and the width of the tear strip such that the resistance to tearing of the tear strip beyond the ends of the weakening lines is greater than the resistance against tearing off the tear strip from the film tube.
- film tube according to the invention a sack of the aforementioned type who who with the advantages mentioned for this sack.
- 1 is a sack according to the invention with a closed opening field
- FIG. 2 is a sack according to the invention corresponding to FIG. 1 with tear strips torn along the lines of weakness
- Fig. 3 shows the object of Fig. 2 in pouring position, the handle and the V-shaped chute and
- Fig. 4 shows a section of a flat film tube.
- FIG. 1 to 3 show a sack 2 according to the invention with a filling space for bulk material which is delimited by a lower base 4, a circumferential wall 6 and an upper filling space end 8 facing away from the lower base 4.
- the sack 2 has a tear strip 10 for releasing an opening area 12 of the sack 2, which is delimited by an upper weakening line 14 and a lower weakening line 16.
- Both weakening lines 14, 16 run parallel to the obe ren filling space termination 8 and the upper weakening line 14 is positioned between the obe ren filling space termination 8 and the lower weakening line 16.
- the sack 2 has a longitudinal seam 18 running transversely to the upper filling space end 8.
- the upper and lower lines of weakness 14, 16 each begin in the area of the longitudinal seam 18.
- the longitudinal seam 18 is weaker in the area between the two lines of weakness 14, 16 than never above the upper line of weakness 14 and below the lower line of weakness 16.
- a flag 22 is arranged which, contrary to the tear-open direction, the tear-open direction in the exemplary embodiment being indicated by the arrow 24, extends beyond the longitudinal seam 18 and does not adhere to the material 26 of the wall 6 of the bag 2 in this area.
- the sack material in the region of the ends 28 of the line of weakness 14, 16 and the material and the width of the tear strip 10 are designed in such a way that the resistance to tearing of the tear strip 10 over the ends 28 of FIG Lines of weakness 14, 16 is also greater than the resistance to tearing of tear strip 10 from sack 2.
- the sack 2 is a gusseted sack with a front side 30 and an opposite back side, which cannot be seen in the exemplary embodiment.
- Front 30 and the back are connected to one another via a first side wall 32 and a second side wall, the position of which is indicated by arrow 34.
- the side walls 32, 34 are each formed by side folds 36 and the lines of weakness 14, 16 extend across at least 80% of the width a of the front 30.
- the area of the side folds 36 is free from the lines of weakness 14, 16.
- the upper filling space closure 8 has a fingertip contact area 38 on the inside facing the filling space, which is formed by a material bend 40 between a first leg 42 and a second leg, which cannot be seen in the figures, but whose position is indicated by the arrow 44 is formed of the sack 2.
- the first leg 42 extends from the upper weakening line 16 to the material fold 40 and the second leg 44 adjoins it starting from the material fold 40.
- the two legs 42, 44 enclose an angle of not more than 135 ° in the state with the opening area 12 of the sack 2 filled with the filling material when the sack 2 is carried by engaging in the opening area 12. This holding position is shown roughly in FIG. 3, with the sack 2 additionally being held below the sack 2 by a second hand in FIG. 3.
- the distance b between the upper weakening line 14 and the material fold 40 is 30 to 65 mm and particularly preferably 45 to 55 mm.
- the distance c between the lower line of weakness 16 and the upper line of weakness 14 is 15 to 25 mm.
- the circumferential wall 6 of the bag also has a front side 30 and a rear side that cannot be seen in the exemplary embodiment, both lines of weakness 14, 16 being arranged centered on the front side of the bag 2 and extending over 15 to 35% of the bag circumference.
- the upper filling space closure 8 is formed in the exemplary embodiment by a transverse seam 46 and the transverse seam 46 also forms the material fold 40 in the interior of the bag 2.
- Fig. 4 shows a section of a film tube 48 according to the invention for the production of the aforementioned bags according to the invention 2.
- the film tube 48 has a plurality of spaced apart parallel to each other on tear strips 10 to release an opening field 12, each of an upper weakening line 14 and a lower line of weakness 16 are limited.
- the film tube 48 also has a longitudinal seam 18 extending longitudinally to the film tube 48.
- the upper and lower lines of weakness 14, 16 each start in the region of the longitudinal seam 18 and the longitudinal seam 18 is each formed in the area between the tear strip 10 assigned upper and lower lines of weakness 14, 16 weaker than above the upper line of weakness 14 and below the lower line of weakness 16.
- a flag 22 is arranged, which is opposite to the tear direction
- the film tube 48 also has a multiplicity of material folding areas 52 arranged at constant distances transversely to the longitudinal extent, represented by the arrow 50 of the film tube 48, for introducing one material bending 40 each.
- the distance b between the upper weakening line 14 of the assigned tear strip 10 and the material folding area 52 is 30 to 65 mm and in particular 45 to 55 mm.
- the distance c of the lower weakening line 16 to the upper weakening line 14 of each tear strip is 15 to
- the lines of weakness 14, 16 are centered on the film tube 48 in its flat state, shown in FIG. 4, and extend over 15 to 35% of the circumference of the film tube.
- the film of the film tube 48 in the region of the ends 28 of the weakening lines 14, 16 and the film and the width of the tear strip 10 are designed in such a way that the resistance to tearing of the tear strip 10 beyond the ends 28 of the weakening lines 14, 16 is greater is the resistance to the tear strip 10 tearing off the film tube 48.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE202018106868.7U DE202018106868U1 (de) | 2018-12-03 | 2018-12-03 | Sack und Folienschlauch zur Herstellung eines derartigen Sackes |
| PCT/EP2019/083529 WO2020115062A1 (de) | 2018-12-03 | 2019-12-03 | Sack und folienschlauch zur herstellung eines derartigen sackes |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP3891080A1 true EP3891080A1 (de) | 2021-10-13 |
| EP3891080B1 EP3891080B1 (de) | 2024-09-18 |
| EP3891080C0 EP3891080C0 (de) | 2024-09-18 |
Family
ID=65084919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19816619.1A Active EP3891080B1 (de) | 2018-12-03 | 2019-12-03 | Sack und folienschlauch zur herstellung eines derartigen sackes |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US11787615B2 (de) |
| EP (1) | EP3891080B1 (de) |
| CN (1) | CN113039133A (de) |
| AU (1) | AU2019392638B2 (de) |
| CA (1) | CA3121841A1 (de) |
| DE (1) | DE202018106868U1 (de) |
| MX (1) | MX2021006394A (de) |
| NZ (1) | NZ775476A (de) |
| WO (1) | WO2020115062A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120156784B (zh) * | 2025-05-19 | 2025-08-05 | 国澳(福建)食品有限公司 | 一种用于肥牛加工的转运装置 |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3836227A1 (de) | 1988-10-25 | 1990-04-26 | Unilever Nv | Verpackung aus flachfolie |
| ES2051522T3 (es) * | 1989-10-27 | 1994-06-16 | Teich Ag | Envase para producto a envasar en piezas. |
| DE9305473U1 (de) | 1993-04-10 | 1993-08-05 | Herkules Verpackungswerke GmbH, 38642 Goslar | Papiersack |
| EP0659151B1 (de) * | 1993-07-08 | 1997-10-29 | Teich Aktiengesellschaft | Aufreisspackung mit aufziehlasche |
| IT1273179B (it) * | 1994-05-05 | 1997-07-07 | Sales Spa | Dispositivo di apertura per contenitori flessibili, contenitore provvisto di tale dispositivo e procedimento per la sua applicazione |
| US5897052A (en) * | 1995-11-27 | 1999-04-27 | Nippon Paper Industries Co., Ltd. | Easily laterally opened type paper container |
| DE19733794A1 (de) * | 1997-08-05 | 1999-02-11 | Focke & Co | Packung für Zigaretten o. dgl. sowie Verfahren und Vorrichtung zum Herstellen derselben |
| CH692980A5 (de) * | 1999-01-21 | 2003-01-15 | Alcan Tech & Man Ag | Verpackung. |
| US9227774B2 (en) * | 2004-12-07 | 2016-01-05 | Idemitsu Unitech Co., Ltd. | Zipper and zipper-equipped bag |
| GB2441320A (en) * | 2006-09-04 | 2008-03-05 | Cadbury Schweppes Plc | Easy-open packaging |
| IT1395150B1 (it) * | 2009-08-07 | 2012-09-05 | Goglio Spa | Confezione in materiale flessibile con apertura a strappo |
| FR2951439B1 (fr) * | 2009-10-15 | 2011-11-25 | Veriplast Flexible | Sac d'emballage en matiere plastique |
| GB201005354D0 (en) | 2010-03-30 | 2010-05-12 | Cadbury Holdings Ltd | Packaging |
| US20160176601A1 (en) * | 2014-12-19 | 2016-06-23 | The Quaker Oats Company | Easy-open flexible package |
| DE202016102623U1 (de) * | 2016-05-17 | 2016-06-23 | Mondi Consumer Packaging Technologies Gmbh | Flachliegender, unbefüllter Seitenfaltenbeutel |
-
2018
- 2018-12-03 DE DE202018106868.7U patent/DE202018106868U1/de active Active
-
2019
- 2019-12-03 US US17/298,034 patent/US11787615B2/en active Active
- 2019-12-03 CA CA3121841A patent/CA3121841A1/en active Pending
- 2019-12-03 AU AU2019392638A patent/AU2019392638B2/en active Active
- 2019-12-03 WO PCT/EP2019/083529 patent/WO2020115062A1/de not_active Ceased
- 2019-12-03 CN CN201980075609.6A patent/CN113039133A/zh active Pending
- 2019-12-03 MX MX2021006394A patent/MX2021006394A/es unknown
- 2019-12-03 NZ NZ775476A patent/NZ775476A/en unknown
- 2019-12-03 EP EP19816619.1A patent/EP3891080B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020115062A1 (de) | 2020-06-11 |
| AU2019392638A1 (en) | 2021-05-27 |
| BR112021005618A2 (pt) | 2021-06-22 |
| EP3891080B1 (de) | 2024-09-18 |
| MX2021006394A (es) | 2021-10-13 |
| NZ775476A (en) | 2024-11-29 |
| DE202018106868U1 (de) | 2019-01-07 |
| US20220097943A1 (en) | 2022-03-31 |
| AU2019392638B2 (en) | 2024-11-14 |
| EP3891080C0 (de) | 2024-09-18 |
| US11787615B2 (en) | 2023-10-17 |
| CA3121841A1 (en) | 2020-06-11 |
| CN113039133A (zh) | 2021-06-25 |
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