EP3807160A1 - Mehrlagiger sack und verfahren zur herstellung eines mehrlagigen sackes - Google Patents
Mehrlagiger sack und verfahren zur herstellung eines mehrlagigen sackesInfo
- Publication number
- EP3807160A1 EP3807160A1 EP19727992.0A EP19727992A EP3807160A1 EP 3807160 A1 EP3807160 A1 EP 3807160A1 EP 19727992 A EP19727992 A EP 19727992A EP 3807160 A1 EP3807160 A1 EP 3807160A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hose
- sack
- pieces
- tube
- telescopically
- 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.)
- Pending
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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/04—Bags or like containers made of paper and having structural provision for thickness of contents with multiple walls
-
- 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
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/02—Feeding or positioning sheets, blanks or webs
- B31B70/10—Feeding or positioning webs
-
- 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
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B70/16—Cutting webs
-
- 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
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/26—Folding sheets, blanks or webs
- B31B70/262—Folding sheets, blanks or webs involving longitudinally folding, i.e. along a line parallel to the direction of movement
-
- 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
- B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
- B65D31/08—Bags or like containers made of paper and having structural provision for thickness of contents with block bottoms
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/10—Packing paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
- D21H27/32—Multi-ply with materials applied between the sheets
- D21H27/34—Continuous materials, e.g. filaments, sheets, nets
- D21H27/36—Films made from synthetic macromolecular compounds
-
- 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
- B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
- B31B2150/001—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom
- B31B2150/0012—Flexible containers made from sheets or blanks, e.g. from flattened tubes with square or cross bottom having their openings facing in the direction of movement
-
- 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
- B31B2150/00—Flexible containers made from sheets or blanks, e.g. from flattened tubes
- B31B2150/002—Flexible containers made from sheets or blanks, e.g. from flattened tubes by joining superimposed sheets, e.g. with separate bottom sheets
-
- 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
- B31B2160/00—Shape of flexible containers
- B31B2160/20—Shape of flexible containers with structural provision for thickness of contents
-
- 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
- B31B2170/00—Construction of flexible containers
- B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined
-
- 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
- B31B2170/00—Construction of flexible containers
- B31B2170/20—Construction of flexible containers having multi-layered walls, e.g. laminated or lined
- B31B2170/204—Construction of flexible containers having multi-layered walls, e.g. laminated or lined involving folding a web about an already tubular web
-
- 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
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
- B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
- B31B70/84—Forming or attaching means for filling or dispensing contents, e.g. valves or spouts
- B31B70/85—Applying patches or flexible valve inserts, e.g. applying film-like valves
Definitions
- the invention relates to a multilayer sack for bulk goods such.
- bulk goods such as cement, gypsum, granules, cocoa powder or other powdered food, building materials or chemicals.
- Sacks of this type are known and are typically formed from two or more layers of a flat or sheet-like material, preferably paper and / or plastic. They are used in particular for the packaging and distribution of powdery or fine-grained bulk goods. Usual sizes are 5 kg, 10 kg and 25 kg.
- a multilayer sack is e.g. B. described in DE 20 2014 000 194.
- the multi-layer hose pieces comprise a plurality of single-layer hose pieces, which typically have the same length and are laid one inside the other in such a way that their ends are flush with one another.
- a two-ply paper web section with such flush ends according to the prior art is shown in FIG. 1a, and a piece of hose formed therefrom in FIG. 1b. Be at the ends of the hose pieces the bag bottoms formed, e.g. B.
- FIG. 1a a cross bottom fold at the top and bottom of the tube piece is indicated by dashed fold lines.
- Figure 1c shows the addition of a cross base in the prior art.
- the bottom fold is usually fixed with a suitable glue.
- a cover sheet is also stuck on for better sealing and fixing of the floor adhesive.
- the sack in the bottom area usually has a material thickness that is not required. Since the generic bags are produced and sold in large quantities, even smaller material savings can lead to relevant cost advantages.
- the stability and tightness of the sack should advantageously be impaired as little as possible.
- the object is achieved by a sack with the features of claim 1.
- a method for producing sacks is proposed with the features of the independent claim 12.
- Advantageous refinements are the subject of the dependent claims.
- the sack comprises two layers of material, which are formed from pieces of tubing inserted into one another, of which a first piece of tubing has an overhang at one end compared to a second piece of tubing.
- the two pieces of hose are in a telescopic arrangement in which the two pieces of hose inserted telescopically into one another do not terminate flush with one another at at least one end.
- the protrusion is suitably a few centimeters, preferably at least 2 cm, more preferably at least 3 cm and even more preferably at least 4 cm.
- The is advantageously Overhang at most 8 cm, further advantageously at most 6 cm and still further advantageously at most 5 cm.
- first and second hose section further layers of material can be present, which can also be formed from hose sections which can be located outside and / or inside the first and / or second hose section and also between them.
- These further tube pieces can be flush at their ends with the first and / or second tube piece or have a protrusion or be shortened relative to these.
- at least one tube piece at least at one end of the tube pieces, from which a multi-layer paper bag is formed projects beyond another tube piece, or at least one tube piece is shortened at least at one end compared to another tube piece.
- a sack bottom can be formed at one end with a protruding piece of hose, in which the material expenditure is reduced by shortening the shortened piece of hose, but due to the protrusion of the protruding piece of hose, a bottom fold closing the bottom can be produced in the usual way.
- the material savings can be limited to the floor area.
- the invention thus enables a multi-layer sack in which material savings can be achieved in the bottom area by hose protrusions and corresponding shortening, while in the area of the sack wall between the floors a stable wall structure with all material layers is retained.
- the protrusion of the first piece of tubing compared to the second piece of tubing is achieved in that the first piece of tubing is longer than the second piece of tubing.
- a protrusion of at least one hose piece relative to at least one other hose piece is preferably formed at both ends of a multi-layer hose piece. Bottoms can then be formed at both ends of the multi-layer hose piece in a material-saving manner. The overhang is particularly advantageously of the same width at both ends.
- the first has a protrusion at one end compared to the second piece of hose, and the second at the other end has a protrusion from the first piece of hose.
- the two tube pieces advantageously have the same length.
- each of the two pieces of hose inserted telescopically into each other at another end projects beyond the other piece of hose, particularly advantageously by an equally wide projection.
- This configuration is particularly advantageous in terms of production technology, because a protrusion can be produced at both ends with hose pieces of the same length.
- a multi-layer piece of tubing is easily extended by telescopically pulling two equally long pieces of tubing inserted into one another.
- the protrusion (s) are formed all around the sack, i. H. the protrusion (s) extend around the entire circumference of the hose.
- the protrusion (s) are also advantageous all around the sack, ie. H. equally wide along the entire circumference of the hose. Overhangs of the same width all around the circumference of the sack can be more easily realized in terms of production technology, in particular by straight-line, smooth cuts or dividing lines when dividing the paper webs and staggered arrangement of stacked paper web sections.
- the protrusion (s) can be formed all around the sack with or without an offset in the hose direction.
- a circumferential center line of the protrusion runs in one plane, while if the protrusion is formed with an offset, such a center line does not run in one plane.
- the protrusions can be produced in a simple manner with a straight cut or smooth cut of the corresponding material web. A non-rectilinear cut is required when designing with an offset. A configuration with an offset can possibly result in advantages when folding and sealing the floor.
- the sack according to the invention has two opposite bottoms, which are preferably formed in a cross or block bottom fold manner at the ends of the tube pieces.
- a piece of hose has the protrusion according to the invention, and the floor or floors according to the invention save material.
- At least one base is additionally reinforced by a cover sheet, which is preferably glued to the outermost piece of hose. With a cover sheet attached in this way, the stability of the base and the sack can be increased. If the outermost piece of tubing in the area of the floor in question is shortened in relation to the tubing or a tubing located further inwards, the outermost tubing piece in the area of this bottom advantageously forms a frame which is glued to the cover sheet.
- the preferred cross or block shelves have side flaps which run essentially parallel to the longitudinal axis of the floor and corner folds at the ends of the longitudinal axis of the floor. Such bottoms are typically increased by collapsing the overlapping side flaps, and the overlapping side flaps are usually glued. In the case of such floors, it is sufficient if the overlapping area of the side flaps is formed only by the protruding hose section (s), while the shortened hose section (s) only extend frame-like from the edge into the floor area.
- the first of the tube pieces inserted into one another telescopically forms the outermost material layer of the sack, and / or the second of the tube pieces inserted into one another telescopically forms the innermost material layer of the sack.
- further layers of material or tube pieces can be inserted, and the first and second tube pieces can or may not have coatings on the inside and outside.
- first and second tube pieces there are particularly preferably no further material layers, so that a two-layer sack is present. If this configuration is formed with first and second tube pieces of the same length, a particularly simple, material-saving two-layer sack is created, in which the protrusions are generated by telescoping the first and second tube pieces.
- At least one material layer of the bags according to the invention is formed from paper or a paper-like material.
- paper-like materials such. B. coated or laminated papers into consideration, or other fibrous flat materials with properties comparable to paper.
- Other layers of material of the bags according to the invention can, for. B. be formed as plastic films.
- the inventive method according to claim 12 is based on the previously known use of a tube machine in the manufacture of sacks.
- Material layers of a sheet-like sheet material for example paper and / or plastic film sheets, are placed one above the other in a tube machine, divided into sections of suitable length and formed into tube pieces.
- the multilayer hose pieces are formed in such a way that at least one of the hose pieces in and / or against the conveying direction of the hose machine has a projection over at least one other hose piece.
- the protrusion can advantageously be produced in that the protruding hose piece is longer or is cut to a greater length than the shortened hose piece that does not protrude. This can e.g. B. can be realized in that the material web from which the protruding hose piece is formed runs faster in the hose machine than the material web from which the shorter hose piece is formed.
- the sack is produced with at least two hose pieces of the same length inserted into one another, which are staggered in the hose machine in such a way that at least one hose piece is displaced forwards or backwards in relation to at least one other hose piece in the conveying direction of the web-like material ,
- the two hose pieces are further advantageously brought into the aforementioned staggered arrangement by staggered cutting of the associated material webs. It is thus possible to form a protrusion at both ends of the hose pieces with material webs running at the same speed in the case of multilayer hose pieces, the protrusion being particularly advantageously of the same size at both ends.
- bottoms are formed at the ends of the multi-layer hose pieces in a so-called floor-laying machine, preferably in a cross or block bottom fold.
- Fig. 1c The addition of a bag bottom known from the prior art
- Fig. 2 A paper web section for a two-ply according to the invention
- Fig. 3 A piece of hose for a two-layer sack according to the invention
- Fig. 3a A piece of hose for a variant of a two-layer sack according to the invention
- Fig. 4 A top view of the open cross floor of an inventive
- Fig. 6 The closed cross bottom of a sack according to the invention
- Fig. 7 The closed bottom of a sack according to the invention with a cover sheet
- Fig. 8 A schematic representation of the cutting of paper webs for a two-ply sack according to the invention
- Fig. 9 A paper web section for a two-layer sack according to the invention with a projection with offset
- FIG. 1a shows a two-ply paper web section 1 for producing a two-ply paper sack according to the prior art.
- the upper paper layer 3 forms the
- the right and left edges 5 and 6 of the material layers 3 and 4 are each connected to form a tube, which is shown in Figure 1b.
- the left edge 6 can be seen from both layers of material 3 and 4, while the right edge 5 can only be seen from the layer of material 3.
- Shaped into a tube, the two-ply paper section according to FIG. 1b forms a two-ply tube piece 1 with the outer tube piece 3 and the inner tube piece 4, the ends of the two paper or tube piece layers 3 and 4 being flush with one another at the ends 7 and 8.
- FIG. 1c shows the bottom 9 increasing when a cross-bottom bag according to the prior art is formed from the paper web section or tube piece 1 according to FIG. 1a / b. As can be seen, the folding of the sections increases the thickness of the material in the area of the bottom fold.
- FIG. 2 shows a two-ply paper web section 15 for producing a two-ply sack according to the invention.
- the upper paper layer 22 forms the outer layer and the lower paper layer 32 the inner layer of the sack.
- a two-layer hose section 15 is formed with the first hose section 22 and the second hose section 32, as shown schematically in FIG.
- the second hose section 32 has a projection U2 at its front end 38 compared to the front end 28 of the first hose section 22, and the first hose section 22 has a projection U1 opposite its rear end 37 of the second hose section 32 at its rear end 27.
- This means that the first tube piece 22 is shortened at its front end 28 by the projection U2 compared to the second tube piece 32, and the second tube piece 32 is shortened at its rear end 37 by the projection U1 compared to the first tube piece 22.
- the embodiment according to FIGS. 2 and 3 can be implemented particularly easily in terms of production technology, because the paper layers 22 and 32 can be cut to the same length in the tube machine, that is to say, web sections of the same length are required for both material layers.
- FIGS. 2a and 3a show a two-ply paper web section 15 or a two-ply hose piece 15 for a variant of a two-ply bag according to the invention, in which the lower paper layer 32 or the inner hose piece 32 is longer than the upper paper layer 22 or the outer hose piece 22
- the inner tube piece 32 has a projection U1 at its rear end 37 and a projection U2 at its front end 38 relative to the outer tube piece 22.
- the projections U1 and U2 are particularly advantageously of the same size.
- the material saving is achieved in this variant in that the rear end 27 of the outer tube piece is shortened by the protrusion U1 relative to the inner tube piece 32 and the front end 28 of the outer tube piece 22 is shortened by the protrusion U2 relative to the inner tube piece 32.
- the protrusions U1 and U2 are formed all around the sack, ie the protrusions extend on the Hose ends 27/37 and 28/38 all around along the entire circumference of the hose. Furthermore, the two overhangs U1 and U2 have the same width all around, ie the overhangs U1 and U2 are the same size at all points. Furthermore, the projections U1 and U2 are formed all around without an offset. The projections U1 and U2 are suitably between 3 cm and 5 cm wide.
- FIG. 4 shows the open cross bottom 50 of a sack according to the invention, which is formed from the two-ply paper web section 15 or tube piece 15 shown in FIGS. 2 and 3.
- the cross base 50 is formed on the tube piece end 28/38, on which the inner tube piece 32 protrudes by the protrusion U2 with respect to the outer tube piece 22.
- the corner folds 52 and 53 as well as the side flaps 55 and 56, which are folded over the side fold lines 58 and 59 in order to add the floor, are characteristic of the cross-bottom folding.
- the piece of tubing 22 is provided with a dot / angle pattern in FIG. 4, and the inner, second piece of tubing 32 with crossed hatching.
- FIG. 5 shows the closing of the bottom 50 of a sack according to the invention, first the front side flap 56 and then the rear side flap 55 being closed.
- the added floor is fixed with the adhesive 51.
- Figure 6 shows the added and glued bottom 50 of a sack according to the invention.
- the outer tube piece 22 forms a frame which runs along the edge of the base 50 and leaves a window in the middle in which the overlap of the protruding area of the side flaps 55 and 56 can be seen.
- the protruding area of the inner tube piece 32 ensures that the bottom is completely closed.
- FIG. 7 shows a bag bottom 50 formed according to the invention, which is additionally reinforced by a cover sheet 60.
- the adhesive contour 61 of the cover sheet is designed in such a way that the cover sheet is bonded to the outer tube piece 22 or the frame formed by it in the region of the bottom.
- a tear strip 69 is provided in the latter.
- FIG. 8 illustrates a stage of the manufacturing method according to the invention for sacks according to the invention, namely the production of a two-ply paper web section 15, in which one paper web section or tube piece 22, 32 has an overhang U at each end relative to the other paper web section or tube piece 22, 32 having.
- Paper webs are unwound from rolls 20 and 30 and placed one above the other in the tube machine.
- the paper web 20 is for the outer layer or the outer, first tube piece 22, and the paper web 30 for the inner layer or the inner, second tube piece 32 of the bags according to the invention.
- the paper webs are provided with a straight transverse perforation 27, 28, 37, 38, which later form the upper and lower edges 27, 28, 37, 38 of the first and second tube pieces 22, 32.
- the paper web sections or hose sections 22 and 32 formed therefrom are then separated in a second station 96 of the tubular machine.
- two-ply paper web sections or tube pieces 22, 32 are formed, in which the upper end 27 of the first tube piece 22 has a protrusion U with respect to the upper end 37 of the second tube piece (32), and the lower end 38 of the second tube piece 32 has a protrusion U opposite the lower end 28 of the first Has hose piece 22.
- the paper web sections or tube pieces 22 and 32 have the same length L in the conveying direction F of the tube machine. Only the perforation or cutting lines are offset or staggered with respect to one another, the paper web section 32 being displaced rearwards in relation to the section 22. In this way, it is possible to produce a two-layer sack with paper web sections or tube pieces 22, 32 of the same length for the outer and inner layer, in which a protrusion U of a tube piece is present at both ends of the two-layer tube piece, so that both bottoms of the bag can be formed according to the invention in a material-saving manner.
- the floors are folded, added and glued in a floor-laying machine (not shown in FIG. 8).
- FIG. 9 illustrates a two-ply paper web section in which the upper and lower ends 27, 28 of the upper and first paper ply 22, which form the first and outer tube piece 22, are not cut in a straight line. Rather, the upper end 27 has protruding tabs 91 and the lower end 28 has recesses 92 which are complementary thereto.
- the projection U is not the same width all around the circumference of the tube and has an offset along the circumference due to the tabs 91 and the recesses 92.
- the embodiment shown in FIG. 9 can also save material in the formation of the bottom, with the flaps 91 and recesses 92 being able to achieve certain advantages in the bottom folding.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Making Paper Articles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018114001.0A DE102018114001A1 (de) | 2018-06-12 | 2018-06-12 | Mehrlagiger Sack |
PCT/EP2019/063671 WO2019238402A1 (de) | 2018-06-12 | 2019-05-27 | Mehrlagiger sack und verfahren zur herstellung eines mehrlagigen sackes |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3807160A1 true EP3807160A1 (de) | 2021-04-21 |
Family
ID=66690340
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19727992.0A Pending EP3807160A1 (de) | 2018-06-12 | 2019-05-27 | Mehrlagiger sack und verfahren zur herstellung eines mehrlagigen sackes |
Country Status (8)
Country | Link |
---|---|
US (1) | US20210229870A1 (de) |
EP (1) | EP3807160A1 (de) |
JP (1) | JP2021526109A (de) |
KR (1) | KR20210000417U (de) |
CN (1) | CN214730984U (de) |
DE (1) | DE102018114001A1 (de) |
TW (1) | TWI799598B (de) |
WO (1) | WO2019238402A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7481129B2 (ja) * | 2020-03-04 | 2024-05-10 | 昭和パックス株式会社 | 紙袋 |
DE102021134238B3 (de) * | 2021-12-22 | 2023-05-04 | Mondi Ag | Verfahren zum Herstellen von Papiersäcken und Papiersäcke |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH339804A (fr) * | 1955-12-20 | 1959-07-15 | St Regis Paper Co | Sac à couches multiples et procédé pour sa fabrication |
US2892580A (en) * | 1956-09-28 | 1959-06-30 | Bemis Bro Bag Co | Bag |
BE562410A (fr) * | 1957-11-16 | 1958-05-16 | St Regis Paper Co | Tubes a couches multiples a extremites echelonnees, sacs faits de ceux-ci et procedes de fabrication de tels tubes et sacs |
FR1584491A (de) * | 1968-03-15 | 1969-12-26 | ||
FR2028049B1 (de) * | 1969-01-16 | 1975-06-20 | Crafsac | |
DE2360142C3 (de) * | 1973-12-03 | 1979-08-02 | Bischof Und Klein, 4540 Lengerich | Mehrlagiger Kreuz· oder Klotzbodensack |
DE7520822U (de) * | 1975-07-01 | 1975-10-30 | Wilhelmstal Werke Gmbh | Sack |
DE7808293U1 (de) * | 1978-03-18 | 1978-07-06 | Bischof & Klein | Mehrlagiger Sack |
JPS5928043U (ja) * | 1982-08-16 | 1984-02-21 | 平川産業株式会社 | ステツプ切り密封型糊貼り紙袋 |
US4635815A (en) * | 1984-09-21 | 1987-01-13 | North American Container Corp. | Reinforced bulk material container |
JPH0624454A (ja) * | 1992-06-12 | 1994-02-01 | Nippon Tokkyo Kanri Kk | 紙を主体とした袋 |
US5908275A (en) * | 1997-07-24 | 1999-06-01 | Illinois Tool Works Inc. | Bag-in-bag combination dunnage airbag |
US20030077010A1 (en) * | 2000-05-08 | 2003-04-24 | Werner Schulz | Stand-up bag of a heat-sealable plastic film for flowable products |
US8579507B2 (en) * | 2009-08-27 | 2013-11-12 | Graphic Flexible Packaging, Llc | Reinforced bag |
US9067722B2 (en) * | 2012-09-14 | 2015-06-30 | Clearpak, Llc | Multi-layered suspension package assembly |
DE202014000194U1 (de) | 2014-01-10 | 2015-04-14 | Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh | Papiersack |
DE102015006212A1 (de) * | 2015-05-13 | 2016-11-17 | Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh | Papiersack und Herstellungsverfahren für einen Papiersack |
DE102017004268B4 (de) * | 2017-05-03 | 2019-05-16 | Dy-Pack Verpackungen Gustav Dyckerhoff Gmbh | Mehrlagiger Sack |
-
2018
- 2018-06-12 DE DE102018114001.0A patent/DE102018114001A1/de active Pending
-
2019
- 2019-05-27 JP JP2020563400A patent/JP2021526109A/ja active Pending
- 2019-05-27 US US17/053,567 patent/US20210229870A1/en not_active Abandoned
- 2019-05-27 KR KR2020217000003U patent/KR20210000417U/ko active Search and Examination
- 2019-05-27 WO PCT/EP2019/063671 patent/WO2019238402A1/de unknown
- 2019-05-27 CN CN201990000772.1U patent/CN214730984U/zh active Active
- 2019-05-27 EP EP19727992.0A patent/EP3807160A1/de active Pending
- 2019-06-11 TW TW108120059A patent/TWI799598B/zh active
Also Published As
Publication number | Publication date |
---|---|
JP2021526109A (ja) | 2021-09-30 |
US20210229870A1 (en) | 2021-07-29 |
TWI799598B (zh) | 2023-04-21 |
CN214730984U (zh) | 2021-11-16 |
TW202012259A (zh) | 2020-04-01 |
KR20210000417U (ko) | 2021-02-22 |
WO2019238402A1 (de) | 2019-12-19 |
DE102018114001A1 (de) | 2019-12-12 |
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