CA2083499A1 - Method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with a handle portion, and a sack or bag manufactured in accordance with said method - Google Patents
Method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with a handle portion, and a sack or bag manufactured in accordance with said methodInfo
- Publication number
- CA2083499A1 CA2083499A1 CA002083499A CA2083499A CA2083499A1 CA 2083499 A1 CA2083499 A1 CA 2083499A1 CA 002083499 A CA002083499 A CA 002083499A CA 2083499 A CA2083499 A CA 2083499A CA 2083499 A1 CA2083499 A1 CA 2083499A1
- Authority
- CA
- Canada
- Prior art keywords
- sack
- bag
- adhesive
- rectangular
- fold line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/06—Handles
- B65D33/12—String 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
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/06—Handles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
- Making Paper Articles (AREA)
Abstract
Abstract The present invention refers to a method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with a handle piece, and to sacks or bags manufactured according to said method. For the solution of the object to simplify already known methods, at one end of a tube section with side gussets (62), two parallelly pregrooved fold lines (64, 66) extending vertically to the side edges are formed. Then the bottom is pulled open and corner tucks (68) are formed thereby. A rectangular bottom cover sheet (70), onto which a U-shaped folded sheet and reinforcements (74, 76) are bonded by an adhesive, is pasted thereon. After the application of the glue pattern (80), the lower bottom half is folded upwards at the inner fold line onto the upper fold line. Finally, the griphole is punched in below the reinforcement and in the section of the reinforcement.
Description
2~$~
METHOD FOR MANUFACTURING A SACK OR BAG WITH A BOTTOM BEING
RECTANGULAR IN THE FILLED STATE AND WITH A HANDLE PORTION, AND A SACK OR BAG MANUFACTURED IN ACCORDANCE
WITH SAID METHOD
This invention relates to a method for manufacturing a sack or bag with a bottom being rectangular i.. the filled st~te znd with a handle portion, and to sacks or bags manufactured in accordance with said method.
Sacks or bags of this kind are for instance known from the German Utility Models 81 15 909 and 82 07 889. Said known sacks or bags, however, show the drawback that the leg-like strips forming a bottom leaf, so to speak, which in their middle region are connected with the web section being provided with the griphole, are bonded by an adhesive to the bottom all-over or nearly allover, so that on the bottom or the web section, i.e. in the region of the longitudinal center plane running through the bottom of the sack, considerable strains are exercised during carrying, said strains resulting from the fact that the forces exercised by the web section are introduced therewith substantially in the region of a line extending centrically through the bottom square.
In order to avoid said drawback, in the German patent application 40 12 896.2 a sack or bag was described which is - 2 - 2~
formed by side tucks partially overlapping corner tucks, and the handle portion joined thereto consists of a middle web section with the griphole and lateral leg-like strips of flexible material beins connected therewith, wherein the bottom which is pulled open is conventionally bonded by an adhesive or welded to a leaf connected sealingly with the inner edges of the corner tucks and at least with the inner edges of the side tucks adjacent to their fold lines, wherein the handle portion is inserted in the still open bottom, and the leg-like strips thereof are at least partially covered by the side tucks and bonded by an adhesive or welded thereto. In this sack or bag, the side of the lateral leg-like strips of the portion facing the leaf constituted by e.g. a piece of paper or fcil, wherein said strips carry in the center thereof the web section having the griphole, is not bonded by an adhesive to said leaf, but the side tucks overlap the lateral leg-like strips and are bonded by an adhesive or welded thereto through the sides thereof at which also the middle web section with the griphole is located. Said sack or bag, therefore, is characterized by a tunnel which is formed between the lower side of the handle portion and the outer side of the leaf. Due to this design, through the middle web section and the leg-like strips connected therewith, the carrying forces are substantially directly introduced into the side walls of the filled sack or bag, so that the handle portion can take up considerably greater carrying forces without the sack being damaged thereby or bottom parts being stripped thereoff.
But it has been proved to be disadvantageous that the sack or bag described above cannot be easily and simply produced by machines. Also the method for manufacturing a sack or bag with a tunnel of the kind mentioned above, as described in the German patent application P 40 14 600.6, is relatively complicated.
It is therefore an object of the present invention to provide a method for manufacturing a sack or bag of the generic type by which said sack or bag can be easily and economically produced by machines in a production line.
Said ob;ect is solved by the methods according to claims 1 and 4. With said method it is possible to manufacture sacks or bags in an especially simple manner, said sacks or bags only requiring a relatively low amount of material but being, nevertheless, of a very strong design in the handle portion.
By the inventivs ~.ethod according to claim 1 a sack or bag with a so-called tunnel bottom is formed in a particularly advantageous manner which has the advantage that the forces introduced via said handles are introduced into the side walls when the bag is taken up, without straining the bottom itself.
Further method steps for the solution of the problem result from claim 4 according to which a sack or bag may be manufactured with a handle portion joined thereto.
Sacks or bags manufactured according to the invention are of particular advantage when they are manufactured by using one single material, preferably paper. In this case, the bags or sacks show a good suitability for recycling.
Despite the fact that it has been indicated as being especially advantageous that the sacks or bags manufactured according to the invention consist of paper, it must be emphasized that within the scope of the invention they can also consist of any other material, in particular also of 2~3~
plastic. Such plastic sacks or bags are not necessarily glued within the scope of the invention, but may also be welded, as is a measure belonging to prior art.
The ends still open after the filling of the sacks or bags are sealed in any manner according to prior art.
Further details and advantages of the invention will be explained in detail in the following by means of the embodiments represented in the drawings. There is illustrated in Figures 1 ~
a first embodiment of the methcd accordins to the invention for the manufacture of a sack or bag, Figures 12 - 20:
a second embodiment of the method according to the invention for the manufacture of a sack or bag.
In Figures 1 through 11 a first embodiment of the inventive method for the manufacture of a paper napkin bag with a kind of pinch-bottom is explained. According to Figure 1 it is started with a tube piece 60 with side gussets 62, in which pregroovings 64 and 66 are provided which extend in parallel to each other and vertically to the side gussets 62. According to Figure 2, the thus prepared tube piece is pulled open along the pregrooving 66. Onto the bottom pulled open in said manner a bottom cover sheet 70 is bonded by an adhesive. The design of said bottom cover sheet 70 can be inferred in detail from the detail reproduction of the bottom cover sheet in Figures 4 to 6. In Figure 4 the back side of the bottom cover sheet is represented which is put on the open bottom. In - 5 ~ $~
this case a glue pattern 78 i9 shown by means of which the bottom cover sheet 70 is joined by an adhesive with the corner tucks 68 and the edge sections of the open bottom up to the pregrooved lines 64. From Figure 3 it can be learnt that the rectangular bottom cover sheet 70 projects beyond the pulled open bottom of the bag at two sides. On one side of the projecting portion of the bottom cover sheet 70 a bow-shaped cardboard reinforcement 74 is bonded by an adhesive.
Therebelow a U-shaped folded sheet 72 with a leg is bonded by an adhesive onto the bottom cover sheet 70 over the entire width of the bottom cover sheet 70, as can be seen in Figure 6. On the opposite side in the section of the projecting strip of the bottom cover sheet an additional cardboard strip 76 is bonded by an adhesive at a location at which the griphole punching is to be provided at a later point of time.
According to Figure 7 a glue pattern 80 is applied onto an edge of the sheet 70 bonded by an adhesive, wherein the free leg of the U-shaped sheet 72 is incorporated in the glue pattern. The area correspondingly applied with a glue pattern is referenced with 80 in Figure 7. Then, according to Figure 8, the lower bottom half is folded back at the inwardly lying fold line 66 onto the upper bottom half. According to Figure 9 a griphole 82 is punched in below the reinforcement 74 and in the section of the reinforcement 76. When the griphole is punched, the longitudinal line 83 faciny the edge is not cut through but only pregrooved.
After filling, the still open end of the bag is closed in any manner known in prior art so that the packing is obtained which is shown in Figure 10. Figure 11 is a lateral detailed view onto the joint section of the handle portion, wherefrom it becomes clear that again a tunnel-shaped bo~tom is formed.
- 6 ~ 3 ~ ~ ~
Figures lla and b show the sense of the reinforcements 74 and 76 in the section of the griphole punching 82. While the bow-shaped cardboard reinforcement 74 due to its bow-shaped formation above all prevents a tearing of the bag edge which preferably consists of paper in particular due to the fact that the forces are advantageously distributed by the ends of the reinforcement which lead away from the edge, the reinforcement 76 projects beyond the fold edge 83 of the grip hole tabs and results in a thickening in the section of the opened griphole, as can be seen in Figure llb, which improves the carrying comfort by the fact that an unpleasant cutting of the griphole edge into the palms is avoided.
With reference to Figures 12-20, the method according to a second embodiment of the present invention is explained. It is an economical method for the continuous production of diaper bags. First of all, two cuts 92 and 94 aligned vertically to the lateral edges and spaced apart are made in a continuously advanced flat web 90, which are located on the elongation of a line. Two cuts 96, 98 or 100, 102 which are parallel to each other, are respectively aligned to said cuts. Glue is applied to the flat web 90 at a lateral edge in a strip-like form. At the same time handle portions 106 and 108 are respectively bonded by an adhesive onto the web in the section of the cuts.
In doing so, the ends 110 or 112 of the handle portion 106 or 114 of the handle portion 108 are pasted in parallel to the cuts 96 and 98 or 100 and 102. Each of the ends is bonded to the flat web 90 by an adhesive over its entire sur~ace. The connecting portion between the ends lies approximately in parallel to cuts 92 and 94 and thus projects beyond cuts 96 and 98 or 100 and 102. Now the flat web 90 is cut correspondingly and folded together to form a tubular piece 90' with side gussets 118 such that the handle portions lie on top of each othPr. A cutting of the flat web is possible particularly in the sections of the handle portions 106 and 108 due to the *act that, already prior to the pasting of the handle portions, cuts 92 and 94 had been provided (see in this respect Figure 12).
In Figures 14a or 14 the tubular piece 90' is represented directly after formation of the tubular piece. Figure 14a is a view in which the tubular piece is slightly pulled apart from the lower opening.
As is shown in Figure 15, at the and of the tubular piece 90' to which the handle portions 108 and 106 are joined by an adhesive, three pregrooved fold line~ 120, 122 and l~a are formed which extend vertically to the lateral edges. The fold line 120 arranged nearest to the end abuts approximately at cuts 96 a~d 98.
In Figure 16 the bottom pulled open at the fold line 124 is shown. As shown in Figure 17 a cover sheet 126 to which glue is applied at its edge sides is put on the bottom and bonded thereto by an adhesive. The folded over edge 128, i~s fold edge lying approximatly above the fold line 120, is not supplied with glue. According to Figure 18, a glue pattern is applied to the folded over edge 128 and a plane section 130 above the fold edge 120. According to Figure 19 the bottom is folded at the fold line 12~ and bonded by an adhesive in the area of the glue pattern of the surfaces 130 and 128. The napkin bag prepared in said manner is then filled from below and closed in a known manner in the lower section which is still open, whereby the package represented in Figure 20 is obtained which advantageously has a tunnel-shaped bottom which is particularly advantageous in the case of the force - -introduction of the force introduced by the handle 106, 108.
METHOD FOR MANUFACTURING A SACK OR BAG WITH A BOTTOM BEING
RECTANGULAR IN THE FILLED STATE AND WITH A HANDLE PORTION, AND A SACK OR BAG MANUFACTURED IN ACCORDANCE
WITH SAID METHOD
This invention relates to a method for manufacturing a sack or bag with a bottom being rectangular i.. the filled st~te znd with a handle portion, and to sacks or bags manufactured in accordance with said method.
Sacks or bags of this kind are for instance known from the German Utility Models 81 15 909 and 82 07 889. Said known sacks or bags, however, show the drawback that the leg-like strips forming a bottom leaf, so to speak, which in their middle region are connected with the web section being provided with the griphole, are bonded by an adhesive to the bottom all-over or nearly allover, so that on the bottom or the web section, i.e. in the region of the longitudinal center plane running through the bottom of the sack, considerable strains are exercised during carrying, said strains resulting from the fact that the forces exercised by the web section are introduced therewith substantially in the region of a line extending centrically through the bottom square.
In order to avoid said drawback, in the German patent application 40 12 896.2 a sack or bag was described which is - 2 - 2~
formed by side tucks partially overlapping corner tucks, and the handle portion joined thereto consists of a middle web section with the griphole and lateral leg-like strips of flexible material beins connected therewith, wherein the bottom which is pulled open is conventionally bonded by an adhesive or welded to a leaf connected sealingly with the inner edges of the corner tucks and at least with the inner edges of the side tucks adjacent to their fold lines, wherein the handle portion is inserted in the still open bottom, and the leg-like strips thereof are at least partially covered by the side tucks and bonded by an adhesive or welded thereto. In this sack or bag, the side of the lateral leg-like strips of the portion facing the leaf constituted by e.g. a piece of paper or fcil, wherein said strips carry in the center thereof the web section having the griphole, is not bonded by an adhesive to said leaf, but the side tucks overlap the lateral leg-like strips and are bonded by an adhesive or welded thereto through the sides thereof at which also the middle web section with the griphole is located. Said sack or bag, therefore, is characterized by a tunnel which is formed between the lower side of the handle portion and the outer side of the leaf. Due to this design, through the middle web section and the leg-like strips connected therewith, the carrying forces are substantially directly introduced into the side walls of the filled sack or bag, so that the handle portion can take up considerably greater carrying forces without the sack being damaged thereby or bottom parts being stripped thereoff.
But it has been proved to be disadvantageous that the sack or bag described above cannot be easily and simply produced by machines. Also the method for manufacturing a sack or bag with a tunnel of the kind mentioned above, as described in the German patent application P 40 14 600.6, is relatively complicated.
It is therefore an object of the present invention to provide a method for manufacturing a sack or bag of the generic type by which said sack or bag can be easily and economically produced by machines in a production line.
Said ob;ect is solved by the methods according to claims 1 and 4. With said method it is possible to manufacture sacks or bags in an especially simple manner, said sacks or bags only requiring a relatively low amount of material but being, nevertheless, of a very strong design in the handle portion.
By the inventivs ~.ethod according to claim 1 a sack or bag with a so-called tunnel bottom is formed in a particularly advantageous manner which has the advantage that the forces introduced via said handles are introduced into the side walls when the bag is taken up, without straining the bottom itself.
Further method steps for the solution of the problem result from claim 4 according to which a sack or bag may be manufactured with a handle portion joined thereto.
Sacks or bags manufactured according to the invention are of particular advantage when they are manufactured by using one single material, preferably paper. In this case, the bags or sacks show a good suitability for recycling.
Despite the fact that it has been indicated as being especially advantageous that the sacks or bags manufactured according to the invention consist of paper, it must be emphasized that within the scope of the invention they can also consist of any other material, in particular also of 2~3~
plastic. Such plastic sacks or bags are not necessarily glued within the scope of the invention, but may also be welded, as is a measure belonging to prior art.
The ends still open after the filling of the sacks or bags are sealed in any manner according to prior art.
Further details and advantages of the invention will be explained in detail in the following by means of the embodiments represented in the drawings. There is illustrated in Figures 1 ~
a first embodiment of the methcd accordins to the invention for the manufacture of a sack or bag, Figures 12 - 20:
a second embodiment of the method according to the invention for the manufacture of a sack or bag.
In Figures 1 through 11 a first embodiment of the inventive method for the manufacture of a paper napkin bag with a kind of pinch-bottom is explained. According to Figure 1 it is started with a tube piece 60 with side gussets 62, in which pregroovings 64 and 66 are provided which extend in parallel to each other and vertically to the side gussets 62. According to Figure 2, the thus prepared tube piece is pulled open along the pregrooving 66. Onto the bottom pulled open in said manner a bottom cover sheet 70 is bonded by an adhesive. The design of said bottom cover sheet 70 can be inferred in detail from the detail reproduction of the bottom cover sheet in Figures 4 to 6. In Figure 4 the back side of the bottom cover sheet is represented which is put on the open bottom. In - 5 ~ $~
this case a glue pattern 78 i9 shown by means of which the bottom cover sheet 70 is joined by an adhesive with the corner tucks 68 and the edge sections of the open bottom up to the pregrooved lines 64. From Figure 3 it can be learnt that the rectangular bottom cover sheet 70 projects beyond the pulled open bottom of the bag at two sides. On one side of the projecting portion of the bottom cover sheet 70 a bow-shaped cardboard reinforcement 74 is bonded by an adhesive.
Therebelow a U-shaped folded sheet 72 with a leg is bonded by an adhesive onto the bottom cover sheet 70 over the entire width of the bottom cover sheet 70, as can be seen in Figure 6. On the opposite side in the section of the projecting strip of the bottom cover sheet an additional cardboard strip 76 is bonded by an adhesive at a location at which the griphole punching is to be provided at a later point of time.
According to Figure 7 a glue pattern 80 is applied onto an edge of the sheet 70 bonded by an adhesive, wherein the free leg of the U-shaped sheet 72 is incorporated in the glue pattern. The area correspondingly applied with a glue pattern is referenced with 80 in Figure 7. Then, according to Figure 8, the lower bottom half is folded back at the inwardly lying fold line 66 onto the upper bottom half. According to Figure 9 a griphole 82 is punched in below the reinforcement 74 and in the section of the reinforcement 76. When the griphole is punched, the longitudinal line 83 faciny the edge is not cut through but only pregrooved.
After filling, the still open end of the bag is closed in any manner known in prior art so that the packing is obtained which is shown in Figure 10. Figure 11 is a lateral detailed view onto the joint section of the handle portion, wherefrom it becomes clear that again a tunnel-shaped bo~tom is formed.
- 6 ~ 3 ~ ~ ~
Figures lla and b show the sense of the reinforcements 74 and 76 in the section of the griphole punching 82. While the bow-shaped cardboard reinforcement 74 due to its bow-shaped formation above all prevents a tearing of the bag edge which preferably consists of paper in particular due to the fact that the forces are advantageously distributed by the ends of the reinforcement which lead away from the edge, the reinforcement 76 projects beyond the fold edge 83 of the grip hole tabs and results in a thickening in the section of the opened griphole, as can be seen in Figure llb, which improves the carrying comfort by the fact that an unpleasant cutting of the griphole edge into the palms is avoided.
With reference to Figures 12-20, the method according to a second embodiment of the present invention is explained. It is an economical method for the continuous production of diaper bags. First of all, two cuts 92 and 94 aligned vertically to the lateral edges and spaced apart are made in a continuously advanced flat web 90, which are located on the elongation of a line. Two cuts 96, 98 or 100, 102 which are parallel to each other, are respectively aligned to said cuts. Glue is applied to the flat web 90 at a lateral edge in a strip-like form. At the same time handle portions 106 and 108 are respectively bonded by an adhesive onto the web in the section of the cuts.
In doing so, the ends 110 or 112 of the handle portion 106 or 114 of the handle portion 108 are pasted in parallel to the cuts 96 and 98 or 100 and 102. Each of the ends is bonded to the flat web 90 by an adhesive over its entire sur~ace. The connecting portion between the ends lies approximately in parallel to cuts 92 and 94 and thus projects beyond cuts 96 and 98 or 100 and 102. Now the flat web 90 is cut correspondingly and folded together to form a tubular piece 90' with side gussets 118 such that the handle portions lie on top of each othPr. A cutting of the flat web is possible particularly in the sections of the handle portions 106 and 108 due to the *act that, already prior to the pasting of the handle portions, cuts 92 and 94 had been provided (see in this respect Figure 12).
In Figures 14a or 14 the tubular piece 90' is represented directly after formation of the tubular piece. Figure 14a is a view in which the tubular piece is slightly pulled apart from the lower opening.
As is shown in Figure 15, at the and of the tubular piece 90' to which the handle portions 108 and 106 are joined by an adhesive, three pregrooved fold line~ 120, 122 and l~a are formed which extend vertically to the lateral edges. The fold line 120 arranged nearest to the end abuts approximately at cuts 96 a~d 98.
In Figure 16 the bottom pulled open at the fold line 124 is shown. As shown in Figure 17 a cover sheet 126 to which glue is applied at its edge sides is put on the bottom and bonded thereto by an adhesive. The folded over edge 128, i~s fold edge lying approximatly above the fold line 120, is not supplied with glue. According to Figure 18, a glue pattern is applied to the folded over edge 128 and a plane section 130 above the fold edge 120. According to Figure 19 the bottom is folded at the fold line 12~ and bonded by an adhesive in the area of the glue pattern of the surfaces 130 and 128. The napkin bag prepared in said manner is then filled from below and closed in a known manner in the lower section which is still open, whereby the package represented in Figure 20 is obtained which advantageously has a tunnel-shaped bottom which is particularly advantageous in the case of the force - -introduction of the force introduced by the handle 106, 108.
Claims (5)
RECTANGULAR IN THE FILLED STATE AND WITH A HANDLE PORTION, AND A SACK OR BAG MANUFACTURED IN ACCORDANCE
WITH SAID METHOD
Claims
1. Method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with an integrated handle portion, comprising the following steps:
a) Formation of two parallel, pregrooved fold lines (64, 66) extending vertically to the side edges, at one end of the tube piece (6) with side gussets (62), b) pulling open the bottom in such a manner that the internal fold line (66) forms the center line of the pulled-open bottom, whereby corner tucks (68) are formed, c) pasting in a rectangular bottom cover sheet (70) being provided with a glue pattern (78) covering the edge of the pulled open bottom and a U-shaped sheet (72) and reinforcements (74, 76) being bonded thereto by an adhesive, d) application of a glue pattern (80) onto the edge of the sheet (70) bonded thereto by an adhesive, wherein the free leg of the U-shaped sheet (72) is incorporated into the glue pattern, e) upward folding of the lower bottom half at the internal fold line (66) onto the upper bottom half, f) punching in of the griphole (82) below the reinforcement (74) and in the section of the reinforcement (76).
a) Formation of two parallel, pregrooved fold lines (64, 66) extending vertically to the side edges, at one end of the tube piece (6) with side gussets (62), b) pulling open the bottom in such a manner that the internal fold line (66) forms the center line of the pulled-open bottom, whereby corner tucks (68) are formed, c) pasting in a rectangular bottom cover sheet (70) being provided with a glue pattern (78) covering the edge of the pulled open bottom and a U-shaped sheet (72) and reinforcements (74, 76) being bonded thereto by an adhesive, d) application of a glue pattern (80) onto the edge of the sheet (70) bonded thereto by an adhesive, wherein the free leg of the U-shaped sheet (72) is incorporated into the glue pattern, e) upward folding of the lower bottom half at the internal fold line (66) onto the upper bottom half, f) punching in of the griphole (82) below the reinforcement (74) and in the section of the reinforcement (76).
2. Method according to claim 1, characterized in that the reinforcement (74) is of an approximately bow-shaped form.
3. Sack or bag manufactured according to claim 1 or 2, characterized in that it is made of one single material, preferably of paper.
4. Method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with an integrated handle portion, comprising the following steps:
a) Into a continuously advanced flat web (90) two cuts (92, 94) aligned vertically to the lateral edges are made, and vertically aligned thereto two cuts (96, 98; 100, 102) are cut, respectively, b) the lateral edge (104) of the flat web (90) is applied with glue in the form of strips, c) two handle portions (106, 108) are bonded to the web (90) by an adhesive such that the ends (110, 112;
114, 116) of the handle portions (106; 108) extend in parallel to the cuts (96, 98; 100, 102), d) the flat web (90) is folded together to a tubular piece (90') with side gussets (118) such that the handle portions lie on top of each other, e) three parallel, pregrooved fold lines (120, 122, 124) extending vertically to the side edges, are formed at one end of a tube piece (90'), f) the bottom is pulled open at the inner fold line (124), g) a cover sheet (126) provided with a glue pattern at its circumferential edge which has a folded over edge (128) at one end is joined to the bottom by an adhesive, h) the folded over edge (128) and an area (130) above the fold line (120) are provided with a glue pattern, and i) the bottom is folded together at the lower fold line (124) and bonded by an adhesive.
a) Into a continuously advanced flat web (90) two cuts (92, 94) aligned vertically to the lateral edges are made, and vertically aligned thereto two cuts (96, 98; 100, 102) are cut, respectively, b) the lateral edge (104) of the flat web (90) is applied with glue in the form of strips, c) two handle portions (106, 108) are bonded to the web (90) by an adhesive such that the ends (110, 112;
114, 116) of the handle portions (106; 108) extend in parallel to the cuts (96, 98; 100, 102), d) the flat web (90) is folded together to a tubular piece (90') with side gussets (118) such that the handle portions lie on top of each other, e) three parallel, pregrooved fold lines (120, 122, 124) extending vertically to the side edges, are formed at one end of a tube piece (90'), f) the bottom is pulled open at the inner fold line (124), g) a cover sheet (126) provided with a glue pattern at its circumferential edge which has a folded over edge (128) at one end is joined to the bottom by an adhesive, h) the folded over edge (128) and an area (130) above the fold line (120) are provided with a glue pattern, and i) the bottom is folded together at the lower fold line (124) and bonded by an adhesive.
5. Sack or bag, manufactured according to the method of claim 4, characterized in that it is made of one single material, preferably paper.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4109323.2 | 1991-03-21 | ||
| DE4109323 | 1991-03-21 | ||
| DE4113232 | 1991-04-23 | ||
| DEP4113232.7 | 1991-04-23 | ||
| DE4135960A DE4135960A1 (en) | 1991-03-21 | 1991-10-31 | METHOD FOR PRODUCING A SACK OR BAG WITH RECTANGULAR BOTTOM IN FILLED CONDITION AND WITH A HANDLE AND A SACK OR BAG PRODUCED BY THIS METHOD |
| DEP4135960.7 | 1991-10-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2083499A1 true CA2083499A1 (en) | 1992-09-22 |
Family
ID=27202320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002083499A Abandoned CA2083499A1 (en) | 1991-03-21 | 1992-03-19 | Method for manufacturing a sack or bag with a bottom being rectangular in the filled state and with a handle portion, and a sack or bag manufactured in accordance with said method |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0529041A1 (en) |
| JP (1) | JPH05508121A (en) |
| CA (1) | CA2083499A1 (en) |
| DE (1) | DE4135960A1 (en) |
| WO (1) | WO1992016423A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011039564A1 (en) * | 2009-09-29 | 2011-04-07 | J.W.T. Snc | Paper bag |
| CN111923493B (en) * | 2020-08-14 | 2022-06-07 | 怀化市金阳包装有限公司 | Levelling machine of container bag production usefulness |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4021801A1 (en) * | 1990-04-23 | 1991-10-24 | Windmoeller & Hoelscher | SACK OR BAG WITH FILLED CONDITION OF RECTANGULAR BOTTOM AND STICKED HANDLE |
| DE4014600A1 (en) * | 1990-05-07 | 1991-11-14 | Windmoeller & Hoelscher | METHOD FOR PRODUCING A SACK OR BAG WITH A RECTANGULAR BOTTOM IN THE FILLED CONDITION AND A HANDLE PART |
-
1991
- 1991-10-31 DE DE4135960A patent/DE4135960A1/en not_active Ceased
-
1992
- 1992-03-19 WO PCT/EP1992/000606 patent/WO1992016423A1/en not_active Application Discontinuation
- 1992-03-19 JP JP92506369A patent/JPH05508121A/en active Pending
- 1992-03-19 EP EP92906611A patent/EP0529041A1/en not_active Withdrawn
- 1992-03-19 CA CA002083499A patent/CA2083499A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05508121A (en) | 1993-11-18 |
| DE4135960A1 (en) | 1992-09-24 |
| EP0529041A1 (en) | 1993-03-03 |
| WO1992016423A1 (en) | 1992-10-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |