WO2017141354A1 - Procédé de fabrication de sac d'emballage - Google Patents

Procédé de fabrication de sac d'emballage Download PDF

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Publication number
WO2017141354A1
WO2017141354A1 PCT/JP2016/054470 JP2016054470W WO2017141354A1 WO 2017141354 A1 WO2017141354 A1 WO 2017141354A1 JP 2016054470 W JP2016054470 W JP 2016054470W WO 2017141354 A1 WO2017141354 A1 WO 2017141354A1
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WO
WIPO (PCT)
Prior art keywords
sheets
pair
bag
spout
packaging bag
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Application number
PCT/JP2016/054470
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English (en)
Japanese (ja)
Inventor
神長　政弘
大江　慎一
吉田　寛
Original Assignee
株式会社フジシールインターナショナル
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by 株式会社フジシールインターナショナル filed Critical 株式会社フジシールインターナショナル
Priority to PCT/JP2016/054470 priority Critical patent/WO2017141354A1/fr
Publication of WO2017141354A1 publication Critical patent/WO2017141354A1/fr

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  • the present invention relates to a method of manufacturing a packaging bag including a bag body having a pair of body sheet and a pair of side-folded side gusset sheets, and a spout attached to the upper end of the bag body.
  • a packaging bag constituted by joining a plurality of sheet materials is widely known.
  • Some packaging bags include a pair of trunk sheets that form a front wall and a rear wall, and a side gusset sheet that forms a gusset (side wall) of the bag.
  • the side gusset sheet is sandwiched between the pair of trunk sheets at the both ends in the width direction of the bag body and joined to the trunk sheet.
  • the joint portion between the side gusset sheet and the body sheet is usually called a side seal portion.
  • the point seal part is a seal part in which a pair of body sheets are joined to each other so that the side gusset sheet does not expand in the vicinity of the upper and lower ends of the bag.
  • the side gusset sheet is provided with a defect portion (punch hole or notch) penetrating in the thickness direction in a folded state.
  • a point seal portion is configured by joining the pair of trunk sheets to each other through the missing portion.
  • FIG. 13 is a front view of the conventional packaging bag 10.
  • the point seal portions PST and PSB are provided at positions overlapping the side seal portions SS.
  • point seal part PST and PSB were also formed simultaneously with side seal part SS formation.
  • Such a packaging bag 10 is disclosed in Patent Document 1, for example.
  • FIG. 14 is a diagram illustrating a state in which a spout is attached to a bag body in the prior art.
  • the spout is a substantially tubular body for taking out the contents in the packaging bag.
  • the spout is attached to the upper end of the bag after forming the side seal portion SS and the bottom seal portion.
  • the pair of body sheet 16 is separated to widen the upper end of the bag.
  • the spout is inserted into the upper end opening of the bag body, and then the upper end edges of the pair of body sheet 16 are joined to each other with the spout sandwiched therebetween. Thereby, a spout is attached to the bag body and the packaging bag is sealed.
  • the point seal portion PST described above is arranged in the side seal portion SS
  • the point seal portion PST is already formed at the stage of spout attachment.
  • the side gusset sheet 18 is not developed at the upper end.
  • the side gusset sheet 18 is not unfolded, in order to widen the upper end opening, as shown in FIG. 14, the body sheet 16 can only be bent in an arc shape. It was difficult to fully spread Moreover, if the trunk
  • seat 18 will become narrow by that much.
  • the spout 14 and the side gusset sheet 18 to be inserted interfere with each other, and the spout 14 cannot be inserted, or even if it can be inserted, a part of the spout 14 overlaps the side gusset sheet 18 and the top seal portion TS is appropriately There was a fear that it could not be formed.
  • Patent Documents 2 and 3 disclose packaging bags in which a point seal portion is provided at a position different from the side seal portion.
  • none of these packaging bags have a spout, and Patent Documents 2 and 3 do not disclose any packaging bag with a spout attached thereto.
  • the manufacturing process of the spouted packaging bag is similar to the packaging bag of Patent Document 1 described above. It is difficult to apply.
  • the manufacturing method of the packaging bag of the present invention includes a pair of trunk sheets, a pair of folded side gusset sheets provided between the pair of trunk sheets and on both sides in the width direction of the trunk sheet, And a spout mounted between the pair of trunk sheets at the upper end portion of the bag body, and in the upper defect portion provided at the upper end portions of the pair of side gusset sheets
  • a manufacturing method of a packaging bag having an upper end point seal portion in which a pair of trunk sheets is joined wherein the manufacturing method includes a bag body forming step and a spout mounting step, and the bag body forming step includes: A notch process for forming an upper notch portion in the side gusset sheet, and a fold portion of the pair of side gusset sheets are inserted inwardly between the pair of trunk sheets, A side seal step for forming a side seal portion of the bag body by joining a sheet and a bottom seal step for forming a bottom seal portion of the bag body, wherein the spout mounting step is
  • a spout insertion step of inserting the spout between a pair of body sheets and a top seal portion formed by joining the spout between the pair of body sheets are formed.
  • the upper defect portion is formed in the vicinity of a position of the side gusset sheet that is an outer end portion in the width direction of the bag body.
  • the upper defect portion is formed at the upper end portion on the folding portion side when the side gusset sheet is folded in half.
  • the bag forming step further includes a cutting step of cutting the pair of body sheet and the pair of side gusset sheets into a predetermined bag shape after the side sealing step and the bottom sealing step.
  • the packaging bag further includes a lower end point seal portion in which the pair of body portion sheets are joined to each other at a lower missing portion provided at a lower end portion of the pair of side gusset sheets, The lower defect portion is formed in the notch step, and the lower end point seal portion is formed in at least one of the side seal step or the bottom seal step.
  • the upper defect portion and the lower defect portion are formed as one defect portion connected to each other in the notch step, and are formed by being divided into two in the cutout step. desirable.
  • the spout mounting step further includes a separation step of separating the pair of body sheets of the bag body from each other to widen the upper end opening of the bag body.
  • the spout has at least a protruding portion protruding from an upper end of the bag body, and a joint portion bonded to the upper end of the bag body in the top sealing step, and the bag body
  • the distance between the pair of side gusset sheets is equal to or wider than the length in the width direction of the joint.
  • the upper defect portion is formed at a position where it is not joined in the side seal process, and the upper end point seal portion is formed in the top seal process. Therefore, since the upper point seal portion is not formed at the time of spout insertion, the upper end opening of the bag can be greatly widened, and the spout can be easily inserted. As a result, the packaging bag can be manufactured more easily.
  • FIG. 1 It is a front view of the packaging bag manufactured by 2nd embodiment. It is a perspective view of the side gusset sheet
  • FIG. 1 is a perspective view of a packaging bag 10 according to an embodiment of the present invention.
  • FIG. 2A is a front view of the packaging bag 10 not filled with the contents.
  • FIG. 3 is a schematic exploded perspective view of the packaging bag 10.
  • the side on which the spout 14 is mounted in the packaging bag 10 is referred to as “top side” or “upper side”, and the opposite side is referred to as “bottom side” or “lower side”.
  • hatched portions indicate seal portions where sheets are joined.
  • the packaging bag 10 is configured by joining a plurality of sheets 16 and 18 and is called a so-called pouch container.
  • the packaging bag 10 is filled with contents.
  • the content is not particularly limited as long as it can be taken out from the spout 14, and may be a liquid or a semi-solid (gel / sol-like material). Further, the content may be a powdery or granular solid as long as it can be taken out from the spout 14.
  • the packaging bag 10 includes a bag body 12 formed by joining a plurality of sheets 16 and 18 and a spout 14 attached to the bag body 12.
  • the bag body 12 includes a pair of body portion sheets 16 that constitute a front wall and a rear wall, and a pair of side gusset sheets 18 that constitute both side walls.
  • the side gusset sheet 18 is a substantially rectangular sheet having substantially the same height as the trunk sheet 16.
  • the side gusset sheet 18 is sandwiched between the pair of body sheet 16 at the both end positions in the width direction of the bag body 12 and is joined to the body sheet 16 in a state of being folded in the width direction.
  • a spout 14 is disposed on the upper end of the bag body 12.
  • the spout 14 is sandwiched between a pair of trunk sheets 16.
  • the packaging bag 10 of this embodiment has a top seal part TS, a side seal part SS, a bottom seal part BS, and point seal parts PSB and PST as seal parts.
  • the bottom seal part BS is configured by joining the lower end edge of the body part sheet 16 to the other body part sheet 16 and the side gusset sheet 18 facing each other.
  • the side seal portion SS is configured by joining the end portion in the width direction of the trunk portion sheet 16 and the end portion in the width direction of the side gusset sheet 18.
  • the top seal part TS is to join the upper end edge of the body sheet 16 to the other body sheet 16 and the side gusset sheet 18 facing each other with the spout 14 sandwiched between the pair of body sheets 16. Consists of.
  • the point seal parts PSB and PST are configured by joining a pair of body sheets 16 to each other via the defect parts 20 and 22 (notches or through holes) formed in the side gusset sheet 18.
  • This point seal portion there are a lower point seal portion PSB and an upper point seal portion PST.
  • the lower point seal part PSB is a seal part in which a pair of body sheets 16 are joined via a lower missing part 20 provided at a position overlapping the bottom seal part BS in the side gusset sheet 18.
  • the lower defect portion 20 is a cutout portion formed at the lower end of the side gusset sheet 18.
  • the upper point seal portion PST is a seal portion obtained by joining a pair of body sheets 16 via an upper missing portion 22 provided at a position overlapping the top seal portion TS in the side gusset sheet 18.
  • the upper defect portion 22 is a cutout portion formed at the upper end of the side gusset sheet 18.
  • the shape of the lower defect part 20 and the upper defect part 22 is not particularly limited, and a seal part can be easily formed by a sealing process such as a notch having an oval shape, a semicircular shape, a rectangular shape, or a punch hole. Anything is acceptable. Further, a plurality of the lower defect portions 20 and the upper defect portions 22 may be provided, but preferably have a shape and a number that are easily formed in a heat sealing process and a cutting process described later.
  • the side seal portion SS is narrowed to the outside at the upper end and the lower end, and becomes narrow.
  • the upper point seal part PST (upper defect part 22) and the lower point seal part PSB (lower defect part 20) are arranged near the constriction of the side seal part SS and not overlapping with the side seal part SS. ing.
  • the positions of the point seal portions PSB and PST exemplified here are merely examples, and other forms may be used as long as the upper point seal portion PST and the side seal portion SS do not overlap. For example, as illustrated in FIG.
  • the side seal portion SS may have a straight shape with a constant width, and the upper point seal portion PST may be disposed on the inner side in the width direction than the side seal portion SS.
  • the packaging bag 10 can be more easily manufactured. The reason and the like will be described in detail later.
  • Each sheet 16, 18 is made of, for example, a resin film.
  • the resin film is required to have basic performance as a packaging bag, such as impact resistance, wear resistance, and heat resistance.
  • each seal part is preferably formed by heat sealing, the sheets 16 and 18 are also required to have heat sealability.
  • Lamination of each layer can be performed by a conventional laminating method, for example, dry lamination with an adhesive, thermal lamination in which a heat-adhesive layer is sandwiched by heat.
  • polyester polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polycarbonate (PC), etc.
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PBT polybutylene terephthalate
  • PC polycarbonate
  • polyolefin polyethylene
  • PE polypropylene
  • PAN polyacrylonitrile
  • PAN polyimide
  • PVC polyvinyl chloride
  • PVDC polyvinylidene chloride
  • PMMA polymethyl methacrylate
  • a stretched or unstretched film of one layer or two or more layers composed of polyethersulfone (PES) or the like can be exemplified.
  • the film constituting the sealant layer includes low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-propylene copolymer (EP), unstretched polypropylene (CPP), biaxially stretched nylon (ON) , Ethylene-olefin copolymer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA), ethylene-vinyl acetate copolymer (EVA), etc.
  • LDPE low density polyethylene
  • LLDPE linear low density polyethylene
  • EP ethylene-propylene copolymer
  • CPP unstretched polypropylene
  • biaxially stretched nylon ON
  • Ethylene-olefin copolymer ethylene-acrylic acid copolymer
  • EAA ethylene-methacrylic acid copolymer
  • EVA ethylene-vinyl acetate copolymer
  • EVA ethylene-vinyl acetate copolymer
  • the gas barrier layer may be a metal sheet such as aluminum, a resin film such as vinylidene chloride (PVDC) or ethylene-vinyl alcohol copolymer (EVOH), or any synthetic resin film (for example, a base film layer). ), And a film obtained by vapor-depositing (or sputtering) an inorganic oxide such as aluminum, aluminum oxide or silica.
  • PVDC vinylidene chloride
  • EVOH ethylene-vinyl alcohol copolymer
  • any synthetic resin film for example, a base film layer.
  • a film obtained by vapor-depositing (or sputtering) an inorganic oxide such as aluminum, aluminum oxide or silica.
  • the spout 14 is a substantially tubular body that communicates the inside and outside of the bag body 12 and is made of hard plastic or the like.
  • the spout 14 has a cap 34 that is detachable by screwing.
  • the spout 14 is roughly divided into a projecting portion 30 projecting outside the bag body 12, a joint portion 32 joined to the trunk portion sheet 16, and a pipe portion 33 extending downward from the lower end of the joint portion 32.
  • a flange 35 is provided at the boundary between the protruding portion 30 and the joint portion 32.
  • the outer shape of the joint portion 32 has a substantially boat shape that becomes thinner as it approaches both ends in the width direction, as shown in FIG. In a state where the joint portion 32 is sandwiched between the pair of body portion sheets 16, the joint portion 32 is fixed to the bag body 12 by heat-sealing the upper end edge of the body portion sheet 16.
  • the bag 12 is formed of five long sheets 40a to 40e.
  • Each of the first and second long sheets 40 a and 40 b is a material of the body sheet 16, and has a width that is at least twice that of the body sheet 16.
  • the third to fifth long sheets 40c to 40e are all materials for the side gusset sheet 18.
  • the third to fifth long sheets 40c to 40e are arranged between the first and second long sheets 40a and 40b in a folded state.
  • the third and fourth elongate sheets 40c and 40d are disposed at both ends in the width direction of the first and second elongate sheets 40a and 40b in a state of being folded in half. As shown in FIG.
  • the fifth long sheet 40e is folded in a substantially C shape so that both ends in the width direction are in the center in the width direction, and the width of the first and second long sheets 40a, 40b. Arranged in the center of the direction. In this manner, by overlapping the five long sheets 40a to 40e, a shape in which two bag bodies 12 are arranged in the width direction is obtained.
  • the third to fifth long sheets 40c to 40e are previously formed with long holes 42 (not shown in FIG. 4, see FIG. 6) at predetermined positions.
  • the long holes 42 later become the missing portions 20 and 22 of the side gusset sheet 18 for forming the point seal portions PSB and PST. Therefore, the formation process of this long hole 42 becomes a notch process which forms the upper side defect
  • the upper defect portion 22 and the lower defect portion 20 are formed as one defect portion (long hole 42) connected to each other in the notch process.
  • five long sheets 40a to 40e are stacked, but one wide long sheet may be folded into a state equivalent to that in FIG. That is, as shown in FIG. 5, the flat long sheet 40 (state S1 in FIG. 5) is bent into an “ ⁇ ” shape at the center in the width direction (see state S2 in FIG. 5). Further, the long sheet 40 bent into the “ ⁇ ” shape is bent into the “ ⁇ ” shape at both side positions (state S4). In this case, the portion bent into the “ ⁇ ” shape and the “ ⁇ ” shape later becomes the side gusset sheet 18, and the long hole 42 is formed before or after the wide long sheet 40 is bent. .
  • the laminated body of the long sheets 40a to 40e is then heated and pressed at a predetermined position by a sealing device (not shown), and the overlapping sheet portions are heat sealed. More specifically, the sealing device heats and presses a location that becomes the side seal portion SS and a location that becomes the bottom seal portion BS of the bag body 12. That is, a side seal step for forming the side seal portion and a bottom seal step for forming the bottom seal portion are performed.
  • the long holes 42 are formed in the third to fifth long sheets 40c to 40e in the notch process.
  • the bottom seal portion BS is formed at a position that covers a part of the long hole 42. Then, when the long sheet 40 is heated and pressurized for the formation of the bottom seal portion BS, the sheet portions that become the body portion sheet 16 are joined to each other in the portion of the long hole 42 that overlaps the bottom seal portion BS, A lower point seal part PSB is formed. In other words, in the present embodiment, the lower point seal part PSB is formed simultaneously with the bottom seal part BS. Note that the lower missing portion 20 may be formed at a position overlapping the side seal portion SS, and the lower point seal portion PSB may be formed simultaneously with the side seal portion SS.
  • a portion of the long hole 42 that does not overlap with the bottom seal portion BS is a portion that later becomes the upper point seal portion PST. Since the long hole 42 is located on the inner side in the width direction than the side seal portion SS, the upper point seal portion PST is not formed even if the side seal portion SS and the bottom seal portion BS are formed.
  • the long sheet 40 on which the side seal portion SS and the bottom seal portion BS (and the lower point seal portion PSB) are formed is cut into a predetermined bag shape by a cutting device (not shown). That is, a cutting process for cutting the pair of body sheet 16 and the pair of side gusset sheets 18 into a predetermined bag shape is executed.
  • the thick solid line indicates a portion to be cut in the cutting process. And by this cutting process, the bag body 12 cut out individually is obtained, and the long hole 42 is formed in the upper defect portion 22 of one bag body 12 and the lower defect portion 20 of the other bag body 12. Divided.
  • FIG. 7 is a view showing the bag body 12 obtained in this cutting process.
  • the bag body 12 cut out individually includes only the side seal portion SS, the bottom seal portion BS, and the lower point seal portion PSB, and the top seal portion TS and the upper point seal portion PST. Is not formed.
  • the spout 14 is inserted into the upper end opening of the bag body 12, and the spout 14 is attached to the bag body 12.
  • FIG. 8 is a diagram illustrating a spout insertion process in which the spout 14 is inserted between the pair of body sheets 16.
  • the upper end opening of the bag body 12 is widened, and the spout 14 is inserted into the widened upper end opening. If the spout 14 can be inserted, finally, a top seal process is performed in which a top seal portion TS and an upper point seal portion PST are formed by heating and pressurizing the upper edge of the bag body 12 with a heat seal device (not shown). And it is completed.
  • the contents may be filled through the upper end opening before the spout 14 is inserted, or may be filled through the spout 14 after the spout 14 is attached.
  • FIG. 13 is a front view of the conventional packaging bag 10
  • FIG. 14 is an image diagram showing the state of spout insertion in the conventional packaging bag 10.
  • point seal portions PSB and PST are formed in the vicinity of the upper end and the lower end in order to improve the standing property and the handling property.
  • the pair of body portion sheets 16 are directly joined.
  • the point seal portions PSB and PST are formed in the side seal portion SS. That is, in the conventional packaging bag 10, the defect portions 20 and 22 are formed in the vicinity of the outer corners of the side gusset sheet 18, and the pair of trunk sheets 16 are joined via the defect portions 20 and 22. In such a configuration, when the side seal portion SS is formed, the upper point seal portion PST is also formed. Then, after forming the upper point seal portion PST, the spout 14 is inserted into the bag body 12.
  • the opening of the bag body 12 was poor. That is, as shown in FIG. 14, when opening the bag body 12, the pair of body sheets 16 are sucked and held by the pair of suction members 58, and in this state, the pair of suction members 58 are moved away from each other. Let At this time, if the upper point seal part PST is formed, the side gusset sheet 18 folded in half cannot be unfolded (unfolded), so the size of the opening (the interval between the body sheets 16) is secured. It was hard.
  • the body sheet 16 in order to secure the size of the opening, the body sheet 16 can only be bent in an arc shape, but by simply bending the body sheet 16, a sufficiently large opening is secured. It was difficult to do. Moreover, if the trunk
  • the spout 14 and the side gusset sheet 18 to be inserted interfere with each other, and the spout 14 cannot be inserted, or even if it can be inserted, a part of the spout 14 overlaps the side gusset sheet 18 and the top seal portion TS is appropriately There was a fear that it could not be formed.
  • Such a problem is caused by the fact that the bag 12 is smaller than the spout 14, especially the distance between the left and right side gusset sheets 18 (the width of one body sheet 16 is different from one unfolded side gusset sheet).
  • the width is equal to less than 1.5 times the width of the joint portion 32 of the spout 14.
  • FIG. 9 is an image view showing a state of insertion of the spout 14 in the present embodiment, and is a schematic cross-sectional view of the bag body 12.
  • 9A shows a state before the upper end opening of the bag body 12 is opened
  • FIG. 9B shows a state where the upper end opening of the bag body 12 is opened.
  • the upper end portions of the pair of trunk sheets 16 are separated without being joined at the stage of insertion of the spout 14. Therefore, when the pair of body sheet 16 is moved in the direction of separating, the side gusset sheet 18 folded in half is developed. As a result, a sufficiently large opening can be secured without bending the trunk sheet 16 into an arc. Moreover, since it is not necessary to bend the side gusset sheet 18 in an arc shape, the space between the side gusset sheets 18 when the upper end opening is widened is not reduced, and a space for inserting the spout 14 can be easily secured.
  • the contents may be filled through the upper end opening before the spout is inserted, but in this case as well, according to the present embodiment, the upper end opening can be greatly widened, so the contents are filled.
  • a filling nozzle (not shown) can be easily inserted.
  • FIG. 10 is a cross-sectional view of the packaging bag 10 after the top seal portion TS is formed. Since the upper missing portion 22 is provided in the top seal portion TS, the upper point seal portion PST is also formed simultaneously with the formation of the top seal portion TS. Moreover, by forming the top seal part TS, the spout 14 is sandwiched between the pair of body part sheets 16 and attached to the body part sheet 16, and the packaging bag 10 is completed.
  • the upper point seal portion PST is formed in the top seal process.
  • the upper point seal portion PST is formed.
  • FIG. 11 is a front view of the packaging bag 10 manufactured in the second embodiment
  • FIG. 12 is a perspective view of the side gusset sheet 18 used in the packaging bag 10.
  • the basic manufacturing method is the same as the first manufacturing method, but the position and shape of the upper defect portion 22 for forming the upper point seal portion PST are different from the first manufacturing method.
  • the upper notch portion 22 is a notch portion obtained by notching the upper end portion (upper end inner edge) on the folded portion side when the side gusset sheet 18 is folded in half. It is said. In other words, in this embodiment, the width of the side gusset sheet 18 folded in half is narrowed only at the upper end.
  • the cutout portion (upper defect portion 22) has a substantially rectangular shape with a size that can be accommodated in the top seal portion TS.
  • the width between the side gusset sheets 18 can be widened by using the upper notch 22 as a cutout portion at the upper edge of the side gusset sheet 18 folded in half.
  • the width between the side gusset sheets 18 can be widened by using the upper notch 22 as a cutout portion at the upper edge of the side gusset sheet 18 folded in half.
  • the upper missing portion 22 serving as the upper point seal portion PST is arranged on the inner side of the side seal portion SS. Therefore, when the spout 14 is inserted (the stage before the formation of the top seal portion TS), the upper point seal portion PST is not joined, and the opening of the bag body 12 can be greatly expanded. As a result, the spout 14 can be inserted more easily.
  • deletion part 22 may be formed not by notching the upper end inner edge of the side gusset sheet
  • the configurations described so far are all examples, so long as the upper missing portion 22 is formed at a position where it is not joined in the side seal process and the upper point seal portion PST is formed in the top seal process.
  • the configuration may be changed as appropriate.
  • two rows of bag bodies 12 are formed from a laminate of long sheets 40a to 40e, but the shape and number of types of long sheets constituting the laminate, and once from the laminate.
  • the number or the like of the bag bodies 12 formed in the above may be changed as appropriate.
  • two rows of bag bodies 12 are formed from a laminate of long sheets, but one row of bag bodies 12 may be formed.
  • the folded long sheet 40 is cut and divided into the body sheet 16 and the side gusset sheet 18, but is previously cut into the size of the body sheet 16 and the side gusset sheet 18.
  • the bag 12 may be manufactured by stacking the sheets.
  • the bag body 12 is configured to have a pair of body sheets 16 and a pair of side gusset sheets 18, but may further include a bottom gusset sheet.
  • the upper missing portion 22 is a notch formed at the upper end of the side gusset sheet 18, but the upper missing portion 22 overlaps with the top seal portion TS in the width direction from the side seal portion SS. If it exists in the position which does, not only a notch part but a punch hole may be sufficient.

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Abstract

L'invention concerne un procédé de fabrication d'un sac d'emballage comprenant un corps de sac qui comprend une paire de feuilles de corps et des feuilles de soufflets latéraux, chacune étant pliée en deux entre les deux feuilles de corps, et un bec fixé à une partie extrémité supérieure du corps de sac, le sac d'emballage présentant une partie joint ponctuel d'extrémité supérieure lorsque les feuilles de corps sont jointes au niveau d'une partie encoche supérieure ménagée au niveau d'une partie extrémité supérieure de chacune des deux feuilles de soufflets latéraux. Le procédé comprend : une étape de formation de corps de sac pour former le corps de sac en formant des parties joints latéraux et une partie joint inférieur ; et une étape de fixation de bec. L'étape de fixation de bec fait intervenir : une étape d'insertion de bec pour insérer le bec entre les deux feuilles de corps ; et une étape de joint supérieur pour former une partie joint supérieur en reliant le bec dans un état où celui-ci est intercalé entre les deux feuilles de corps. La partie encoche supérieure est formée dans un emplacement qui n'est pas joint à l'étape de joint latéral, et la partie joint ponctuel d'extrémité supérieure est formée dans l'étape joint supérieur.
PCT/JP2016/054470 2016-02-16 2016-02-16 Procédé de fabrication de sac d'emballage WO2017141354A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH111250A (ja) * 1997-06-16 1999-01-06 Fuji Seal Co Ltd 口栓付きパウチ容器
JP2005088926A (ja) * 2003-09-17 2005-04-07 Dainippon Printing Co Ltd 注出口付き袋
JP2005145459A (ja) * 2003-11-11 2005-06-09 Fuji Seal International Inc パウチ容器
WO2011024906A1 (fr) * 2009-08-26 2011-03-03 株式会社細川洋行 Sac gousset, sac gousset avec élément d'embouchure et procédé pour leur fabrication

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH111250A (ja) * 1997-06-16 1999-01-06 Fuji Seal Co Ltd 口栓付きパウチ容器
JP2005088926A (ja) * 2003-09-17 2005-04-07 Dainippon Printing Co Ltd 注出口付き袋
JP2005145459A (ja) * 2003-11-11 2005-06-09 Fuji Seal International Inc パウチ容器
WO2011024906A1 (fr) * 2009-08-26 2011-03-03 株式会社細川洋行 Sac gousset, sac gousset avec élément d'embouchure et procédé pour leur fabrication

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