JP2014080224A - Packaging pouch with nozzle and method for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily-manufacturable packaging pouch with a nozzle capable of urging opening of a nozzle part for extraction of a content without integrating a pipe into the nozzle part, and thereby capable of securing stable extraction performance, and to provide a method for manufacturing the same.SOLUTION: While a projecting ridge line part 73 is formed on the outside along the center axis of a nozzle part 67, a blank side across the seal end edge between a seal part on both side edges of the nozzle part 67 and a seal part of an opening tab on the tip edge is subjected to compression formation in the thickness direction in the cold, to thereby form a projection part 74 projecting to the outside on a pouch piece remaining elongation strain. Then, a nozzle part blank opened on an opening scheduled position is pressed by the projection part remaining elongation strain from both side edges to promote opening of the nozzle part, and to thereby open it surely.

Description

  TECHNICAL FIELD The present invention relates to a packaging pouch with a nozzle and a method for manufacturing the same, and can facilitate the opening of a nozzle portion for pouring the contents to ensure stable pouring property and can be easily manufactured. It is what I did.

A packaging pouch with a nozzle is used for refilling, such as sealing and packaging a fluid content such as liquid or powder and transferring it to another container via a nozzle portion.
This packaging pouch with a nozzle is, for example, a standing pouch, and has a bottom portion that can be unfolded by folding the bottom pouch piece between a plastic film-like surface pouch piece and a back surface pouch piece and then heat-sealing the periphery. In addition, a space for filling the contents is formed, and a nozzle portion for pouring is formed in the upper corner portion of the pouch, or in the upper central portion or the like.
The dispensing nozzle portion is formed so as to narrow the width of the void toward the opening expected position, such as an easy opening processing portion, and the opening portion is provided with a tab for opening, and the peripheral portion is heat sealed. Formed.

In such packaging pouches with nozzles, there is a problem that the surface pouch pieces and the back surface pouch pieces with overlapping nozzle portions are in close contact with each other and it is difficult for the contents to flow out, and various proposals have been made to secure the flow path. ing.
For example, in a packaging bag with a dispensing function disclosed in Patent Document 1, an opening assisting mechanism and an anti-bending mechanism adjacent to or adjacent to the opening assisting mechanism are formed at the portion that becomes the spout after the packaging pouch is opened. Therefore, the spout can be easily formed, and the contents can be easily taken out while keeping the flow by preventing the spout from being bent.

  Further, in the pouch container disclosed in Patent Document 2, a pouch container in which the stacked pouch materials are sealed and a body portion and a nozzle communicating with the pouch material are configured to store the content liquid. The surface of the wall that is at least part of the nozzle wall or at least part of the nozzle wall and at least part of the barrel wall that is continuous to the center line of the nozzle on the pouch wall. In addition, an overhanging portion is formed by extending the wall of the pouch having a dotted and / or linear shape outwardly, and the nozzle is formed by the protruding portion having the planar, dot, or linear shape. Is provided with a desired rigidity so that the open state can be maintained.

Japanese Patent Laid-Open No. 11-11498 JP 2007-276837 A

However, in such a packaging pouch with a nozzle, after two pouch pieces are pre-sealed to form a pouch, an opening assisting mechanism is adjacent to or adjacent to the portion serving as a spout, and a bending prevention mechanism is provided. In the same way, after two pouch materials are heat-sealed in advance to form a pouch, the surface of the pouch wall is projected to the outside, and then it is planar, dotted, or linear Thus, there is a problem in that it is impossible to process the overhanging portion having the shape of the above, and it is necessary to perform embossing or overhanging in advance at the stage of each pouch piece or pouch material, resulting in an increase in man-hours.
Also, when trying to make the nozzle part thinner, such as when refilling into a small-diameter container, the misalignment for bonding must be considered, and the width of the heat seal part at the peripheral part of the nozzle part Since it cannot be less than a certain width for securing, the width of the space serving as the flow path is narrowed and the width of the heat seal portion is relatively widened.
This heat seal part is highly rigid because it is integrated with the front and back pouch pieces overlapped, especially in the vicinity of the nozzle part tip, because the heat seal part is formed surrounding the tip and both sides of the void. There is a problem that the rigidity is higher and the action of maintaining the nozzle portion in a flat state is larger, and the contents cannot be stably taken out because it is difficult to spread as compared with the nozzle portion having a normal width.
In addition, it has been proposed to secure the flow path by three-dimensionally forming the void of the nozzle part into a circular cross section, etc., but it can be restored if the pouch piece on one side is crushed by the force from the outside. There is also a problem that it is difficult to take out the contents.
On the other hand, in order to secure the flow path of the nozzle part, there is also a pipe-type packaging pouch in which a pipe is inserted and incorporated in advance in the void of the nozzle part, but the manufacturing process is increased compared to the packaging pouch with an all-film nozzle. However, when the pipes of the nozzle portion overlap during storage or transportation before filling the contents, there is a problem that it is difficult to stack and the space efficiency is poor.

  The present invention has been made to solve the above-described problems of the prior art, and is capable of prompting the opening of the nozzle portion for pouring the contents without having to incorporate a pipe into the nozzle portion. It is intended to provide a packaging pouch with a nozzle that can be easily manufactured and a method for manufacturing the same.

As a result of diligent research and development in order to solve the above-described problems of the conventional technology, a laminated synthetic resin film used for a packaging pouch is usually a soft film whose innermost surface has heat sealability, such as a polyethylene film or a polypropylene film. Thus, it is a multilayer film in which a stretched film having high strength, such as a polyamide film or a polyester film, is laminated on the outer surface side. It has been found that when such a multilayer film is subjected to compression molding in the thickness direction, the part to be three-dimensionally formed in the cold direction causes a phenomenon in which the compressed part protrudes to the high-strength film side after the pressure is released.
In addition, this cold three-dimensional molding method can also be compression-molded in a state where a plurality of multilayer films are stacked, so that each multilayer film projects over the high-strength film side, or one multilayer film. It was also found that it is possible to overhang only.
This makes it possible to perform processing in a pouch state in which two pouch pieces are heat-sealed. Unlike the case where the pouch pieces are processed before heat sealing, the processing strain is released at the time of heat sealing. The present invention has been completed by finding that the processing can be completed while leaving a tensile strain and a pouch can be finished, and that the processing strain is utilized for the opening of the nozzle portion.
On the other hand, in the nozzle part of the packaging pouch with nozzle, two films are overlapped and the peripheral part of the void is heat-sealed, and the flow path is opened when the tip of the void is opened as the opening position. When trying to secure in the state, it is necessary to make the heat seal part on both sides (for example, top and bottom) of the two openings approach, and to deform so that the film spreads in the direction (for example, left and right) intersecting this For this reason, it has been found that it is effective to use the processing strain by the above three-dimensional molding method to push or to be deformed so as to pull, and the strain giving such deformation is preliminarily applied to the pouch piece or the like. The problem is solved by leaving the nozzle opening wide and the specific configuration of the completed invention is as follows.

That is, the packaging pouch with a nozzle according to claim 1 of the present invention seals the peripheral portion where the film-like pouch pieces are overlapped to form a space for filling the contents, and is directed to the planned opening position. A pouch for packaging with a nozzle formed by sealing a peripheral edge portion of a dispensing nozzle portion with a reduced width of the void,
The pouch pieces overlapped with the nozzle part are respectively formed with ridge lines protruding outward along the central axis of the nozzle part, while the sealing parts on both side edges and the opening edge tabs of the nozzle part A protruding convex portion is formed on the outer side of at least one pouch piece, leaving an elongation strain from the seal edge to the void side, and a nozzle portion opened at the planned opening position at the convex portion. It is characterized in that the opening of the nozzle portion can be promoted by pushing the void from both side edges.

  The packaging pouch with a nozzle according to claim 2 of the present invention has, in addition to the configuration according to claim 1, a tensile component that pulls the nozzle portion toward the base end side of the ridge line portion on the pouch piece on the base end side of the ridge line portion. Forming a convex protruding convex part on the outside leaving the tensile strain having, and making it possible to promote the opening of the pouch pieces by pulling the void of the nozzle part opened by this tensile convex part It is a feature.

  The packaging pouch with a nozzle according to claim 3 of the present invention has the configuration according to claim 2, and the tensile convex portion is formed in a curved shape in which a central portion on the base end side of the ridge line portion is concave. The tension convex part on the most ridge line part side is arranged and configured so that a straight line connecting both end parts intersects the ridge line part.

  A packaging pouch with a nozzle according to a fourth aspect of the present invention is characterized in that, in addition to the configuration according to the second or third aspect, the tensile convex portion is formed by forming a plurality of strips at intervals. To do.

  A packaging pouch with a nozzle according to a fifth aspect of the present invention is the folded portion by folding the seal portion of the nozzle portion on the front end side from the planned opening position in addition to the configuration according to any one of the first to fourth aspects. Is formed.

  A packaging pouch with a nozzle according to a sixth aspect of the present invention, in addition to the structure according to any one of the first to fifth aspects, folds the side seal portion of the peripheral portion of the pouch piece to fold the side fold portion. It is formed.

  According to a seventh aspect of the present invention, there is provided a method for manufacturing a packaging pouch with a nozzle, wherein pouch pieces made of a laminated synthetic resin film in which at least an innermost soft inner surface film and an outer surface side high strength outer surface film are laminated are overlapped. The side edge is sealed at the side and the lower edge is sealed at the bottom to form a space for filling the contents with the upper edge opened, and the width of the space is reduced toward the planned opening position. When manufacturing a packaging pouch with a nozzle formed by sealing the peripheral edge portion of the dispensing nozzle portion, the pouch piece is cold-formed in the thickness direction, and the compression-formed portion is stretched outward. A method of manufacturing a packaging pouch with a nozzle that is allowed to be ejected, wherein the gap is formed by cold compression in the thickness direction so as to straddle the seal portion provided with the seal and the void. Stretched To generate is characterized in that to form the convex portion of the convex outwardly in at least one of the pouches piece.

  According to an eighth aspect of the present invention, there is provided a manufacturing method for a packaging pouch with a nozzle. The convex portion is formed by compression molding in the cold, and a tensile strain having a tensile component that pulls the nozzle portion toward the base end side is generated.

  According to the packaging pouch with a nozzle of claim 1 of this invention, while forming a convex ridge line portion outward along the central axis of the nozzle portion on the pouch piece where the nozzle portion of the packaging pouch with nozzle overlaps, A protruding convex portion is formed on the outer side of at least one pouch piece, leaving a strain extending from the seal edge between the seal portion on both side edges of the nozzle portion and the seal portion of the opening tab on the tip edge to the void. Thus, it is possible to push the nozzle part void opened at the planned opening position from both side edges using the elongation distortion of the convex part, and promote the opening of the nozzle part and surely open it. it can.

  According to the packaging pouch with a nozzle according to claim 2 of the present invention, on the pouch piece on the base end side of the ridge line portion, leaving outside the tensile strain having a tensile component that pulls the nozzle portion on the base end side of the ridge line portion. Since the convex tensile convex part is formed, the tensile convex part can be used to pull the void of the opened nozzle part along the pouch surface, and the ridge line part between the overlapping pouch pieces can be formed. The opening can be facilitated by pulling apart, and the opening can be made reliably.

  According to the packaging pouch with a nozzle according to claim 3 of the present invention, since the tensile convex portion is formed in a concave curved shape at the base end side central portion of the ridge line portion, the tensile strain component in the ridge line direction It is possible to promote the opening by pulling with, and since the straight line connecting both ends of the tensile convex part closest to the ridge line part intersects with the ridge line part, the nozzle convex end part by the tensile convex part In addition, a straight portion such as a valley line where the nozzle falls is not formed, and the nozzle can be prevented from falling.

  According to the packaging pouch with a nozzle according to claim 4 of the present invention, since the plurality of tensile convex portions are formed at intervals, tensile strain is generated from each of the plurality of tensile convex portions and added. The nozzle can be opened more reliably.

  According to the packaging pouch with a nozzle according to claim 5 of the present invention, the end portion of the pouch piece is exposed to the outside because the folded portion is formed by folding the seal portion of the nozzle portion on the tip side from the planned opening position. Therefore, the rigidity can be improved and the opening operation becomes easy.

  According to the packaging pouch with a nozzle according to claim 6 of the present invention, the side seal portion at the peripheral edge of the pouch piece is folded to form the side folded portion, so that the end face of the pouch piece at the side of the pouch Thus, it is possible to increase the rigidity by preventing the exposure, and transfer can be performed in a stable state.

  According to the manufacturing method of a packaging pouch with a nozzle according to claim 7 of the present invention, when manufacturing a packaging pouch with a nozzle, the thickness direction is cold so as to straddle the seal portion where the seal is applied and the void. Since the pouch piece is formed with an outwardly convex convex portion, the pouch piece has an elongation strain in comparison with the sealed pouch. The convex part can be formed and the nozzle part cavity opened at the planned opening position can be pushed from both side edges to facilitate the opening of the nozzle part, and a pouch that reliably opens can be easily manufactured.

  According to the method for manufacturing a packaging pouch with a nozzle according to claim 8 of the present invention, the outwardly protruding tensile convex portion is cold-compressed on the pouch piece on the proximal end side of the nozzle portion whose peripheral portion is sealed. Since it is formed by molding and tensile strain is generated with a tensile component that pulls the nozzle part toward the base end side of the ridge line part, the tensile convex part can be easily molded to the pouch after sealing. The opening of the pouch pieces can be promoted and reliably opened by pulling the void of the nozzle portion opened by the tensile convex portion.

It is a front view concerning one embodiment which applied the packaging pouch with a nozzle of this invention to a standing pouch. 1 is an enlarged view of a nozzle portion, (b) is a BB ′ sectional view, and (c) is a CC ′ sectional view. It is explanatory drawing of the manufacture principle concerning one Embodiment of the manufacturing method of the packaging pouch with a nozzle of this invention. It is explanatory drawing of the effect | action of the elongation distortion concerning one Embodiment of the packaging pouch with a nozzle of this invention. It is explanatory drawing of the effect | action of the tensile strain concerning one Embodiment of the packaging pouch with a nozzle of this invention. It is a schematic explanatory drawing of the process part used for each process of each forming roll concerning one Embodiment of the manufacturing method of the packaging pouch with a nozzle of this invention. It is a partial front view concerning other one Embodiment of the packaging pouch with a nozzle of this invention. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic explanatory drawing of the shaping | molding principle with respect to the laminated film of 1 sheet concerning one Embodiment of the three-dimensional shaping | molding method of the laminated | multilayer film of this invention, and its apparatus. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic explanatory diagram of a forming principle for a case where two laminated films according to an embodiment of a three-dimensionally molded method and apparatus for a laminated film of the present invention are stacked. It concerns on one Embodiment of the three-dimensional shaping | molding method of the laminated | multilayer film of this invention, and its apparatus, (a) is schematic explanatory drawing of a plane press molding apparatus, (b) is schematic explanatory drawing of a rotary processing apparatus. It is a schematic explanatory drawing of the forming principle with respect to the two laminated | multilayer film by the rotary process concerning one Embodiment of the three-dimensional shaping | molding method of the laminated | multilayer film of this invention, and its apparatus. BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic explanatory drawing of the shaping | molding principle only of the one side with respect to the two laminated | multilayer film by the rotary process concerning one Embodiment of the three-dimensional shaping | molding method of the laminated | multilayer film of this invention, and its apparatus.

Hereinafter, embodiments of a packaging pouch with a nozzle and a manufacturing method thereof according to the present invention will be described in detail with reference to the drawings.
In the packaging pouch with a nozzle according to the present invention, since the protruding portion is formed so as to remain in an elongation strain or a tensile strain, first, the method for producing the packaging pouch with a nozzle according to the present invention The three-dimensional forming method of the laminated film used for the above will be described.

  The three-dimensional molding method of the laminated film used in the present invention is to three-dimensionally form the laminated film so that the compression-molded portion projects outwardly after releasing the pressure by compressing the laminated film in the thickness direction in the cold. In this three-dimensional molding method of laminated film, it can be applied not only to a single (single) laminated film but also to a laminated film bonded by heat sealing or the like. It is possible to overhang both sides of the tube or only one side.

In this three-dimensional molding method of the laminated film, as the laminated film, for example, a laminated synthetic resin film 10 used in a packaging pouch is used, and at least an innermost soft inner film 11 and an outer surface high strength outer film 12 are used. A laminated film laminated with is used.
The laminated synthetic resin film 10 of the packaging pouch is a film having a heat seal property, for example, a polyethylene film or a polypropylene film, as the soft inner surface film 11 on the innermost surface, and is stretched, for example, as the outer surface film 12 having a high strength on the outer surface side. Films are used, and polyamide films such as nylon films and PET films, polyester films, and the like are used.
In addition, another synthetic resin film may be laminated between the inner surface film and the outer surface film or on the outer side of the outer surface film.
Further, in the laminated synthetic resin film 10 of the packaging pouch, the inner film is usually laminated with the thickness of the inner film being about 60 to 200 μm, the thickness of the outer film being about 10 to 20 μm, and the inner film being the outer surface. It is about 3 to 20 times thicker than the film. Moreover, when the total thickness of a laminated | multilayer film contains another layer, it is about 70-300 micrometers including that.

In such a three-dimensional molding method of the laminated synthetic resin film 10, as shown in FIG. 8, when the portion 13 to be cold-molded is compression-molded in the thickness direction, the strength is high after the compressed portion 13 releases the pressure. The principle of three-dimensional molding is that a phenomenon of projecting to the film 12 side occurs and the projecting portion 14 is formed.
The overstretching phenomenon toward the high-strength film 12 by compression molding appears when the laminated synthetic resin film 10 is compressed by about 30% of the total thickness, and the mechanism is not necessarily clear, but when compressed in the thickness direction, It is the flexible inner film 11 having a weak strength that is largely deformed and is greatly stretched so as to be pushed out from the compressed surface, and the outer film 12 having a high strength is laminated. In the behavior when the thickness of the inner and outer surface films 11 and 12 is restored after removing the compressive force, the inner film 11 is largely restored, and the outer film 12 is little restored, and the outer film 12 is sheared. It is thought that there is some difference between the inner and outer film 11, 12, such as the effect of deformation elongation remains as elongation strain. .
There are various indexes indicating that the inner surface film is soft, and examples include that the elastic modulus and Young's modulus are smaller than the outer surface film, or that the yield elongation and fracture elongation are larger than the outer surface film.

  As shown in FIG. 9, the laminated synthetic resin film 10 is like a packaging pouch, as shown in FIG. Even when the inner surface films 11, 11 are opposed to each other and overlapped (at least the part to be three-dimensionally molded is not bonded), the respective laminated synthetic resin films are strong. The phenomenon of projecting to the high outer film side occurs, and even if compression molding is performed in the thickness direction from both sides or compression molding in the thickness direction from one side, compression molding is performed by about 30% in the thickness direction. Thus, similarly, three-dimensional molding can be performed so as to project to the outer film side having high strength.

Further, in the three-dimensional molding method by compression molding in the thickness direction of the laminated synthetic resin film, the outer surface film 12 (12) side is projected by being compressed by about 30% of the total thickness in the thickness direction in the cold direction. Therefore, as shown in FIG. 10, as the compression molding apparatus, three-dimensional molding is performed using a flat pressing apparatus 30 that compresses in a plane or a rotary processing apparatus 40 that compresses while rotating using a pair of molding rolls. Can do.
In addition, in this three-dimensional molding method, if processing is performed from one side, it is only necessary to prepare a mold or a molding roll having the required shape, and the other is a flat shape, making compression molding easier. Can be performed.
In addition, what is necessary is just to apply what is used conventionally for the structure of a frame, a slide mechanism, a rotary bearing mechanism, a drive mechanism, etc. of a plane press processing apparatus or a rotary processing apparatus, and concrete description is abbreviate | omitted.

  In particular, when the laminated synthetic resin film 10 (10) is compression-molded by the rotary processing apparatus 40 using the pair of molding rollers 41 and 42, the processing by the molding rolls 41 and 42 is performed by point contact or line contact. Compared with the flat press processing apparatus 30 that processes the punch 31 and the anvil (cradle) 32 in contact with each other, the contact area is very small, the required forming force can be easily applied, and the apparatus itself is downsized. The structure of the frame and the like can be simplified and energy saving can be achieved. Furthermore, since there is no intermittent reciprocating motion of the press and processing is performed by the rotation of the roll, the film can be continuously formed while being conveyed, and the vibration of the apparatus can also be suppressed.

In the three-dimensional molding method of the laminated synthetic resin film, as shown in the example of the rotary processing apparatus 40 in FIG. 11, the molding is performed so that the cold compression ratio in the thickness direction is about 30% of the total thickness. By adjusting the processing allowance of the processing portion 43 of the roll 41 with respect to the forming roll 42, the overhang portions 14 and 14 are surely provided on the outer surface sides of the respective outer surface films 12 and 12 of the two laminated synthetic resin films 10 and 10. Can overhang.
If the compression molding ratio exceeds about 50%, the film may be cracked or broken.

In the rotary processing, since the processing position sequentially moves in the rotation direction, a tensile force for feeding the film along the rotation direction R acts, and at the same time, a shearing action for pushing the film accumulates on the film biting side. As estimated from the above-described principle, it is considered that the greater the force for extruding the film from the compression molding portion, the greater the amount of three-dimensional molding overhanging. In this respect as well, production by rotary processing is suitable.
However, if the accumulation of the action of pushing the film toward the biting side in the rotation direction R becomes too large, wrinkles may occur in the film, so that processing and release are repeated along the rotation direction R. It is desirable to arrange them in a suitable length. In addition, generation | occurrence | production of a wrinkle can also be prevented by subdividing a process part in the orthogonal | vertical direction with the rotation direction R in the three-dimensional shaping | molding.

Further, in this three-dimensional molding method of the laminated synthetic resin film, the frictional force on the surface of the processed portion 43 affects the amount of overhang of the three-dimensional molding, so that the mold and molding roll constituting the processed portion 43 are more than a flat metal surface. When the surface of the mold or molding roll is sandblasted, or the surface of the mold or molding roll is pasted with a cellophane tape, a paper file, or a sponge to increase the frictional force, the overhang amount increases. The same effect can be obtained by directly roughening the surface of the processed portion 43, for example, by processing it into an uneven shape (for example, enlarged in FIG. 12).
Although the details of the principle of such action are unknown, it is presumed that the shearing force generated between the inner surface film 11 and the outer surface film 12 increases due to the deformation of the outer surface film 12 being restricted from the surface side. .
Further, in this three-dimensional molding method of the laminated synthetic resin film, the friction force on the surface of the processing part 43 of one molding roll 41 is made larger than that of the surface of the other molding roll 42 as shown in FIG. The overhanging portion 14 can be three-dimensionally molded so as to overhang only the inner and outer surface films 11 and 12 of the laminated synthetic resin film 10 on one side (upper side in the illustrated example) that is compression-molded by 43.
Specifically, the surface of the forming roll 42 is left as metal, and only the surface of the processed portion 43 may be configured to increase the above-described frictional force such as sandblasting.

Similarly, when the frictional force between the surface of the processed portion 43 and the outer surface film 12 on one side is larger than the frictional force between the facing inner surface films 11 and 11 of the laminated laminated synthetic resin films 10 and 10, The overhanging portion 14 on only one side is more clearly formed.
The reason why such a phenomenon occurs is not clear, but if the friction between the outer surface film 12 on the other side and the surface of the molding roll 42 is small or the friction between the two laminated synthetic resin films 10 and 10 is small, the compressive force is reduced. It is thought that slipping occurs when the film is converted into a shearing force between the inner and outer surface films 11 and 12 of the laminated synthetic resin film 10 on the other side and does not act effectively.

  Furthermore, in this three-dimensional molding method of the laminated synthetic resin film, when the laminated synthetic resin films 10 and 10 are compression-molded with two inner surface films 11 and 11 facing each other, after bag making, before filling the contents Like the packaging pouch 60 with a nozzle, front and back pouch pieces 61 and 62 composed of two laminated synthetic resin films 10 and 10 are heat sealed, and both side edges are side-sealed to form side seal portions (side seal portions). ) 64 and 64 are formed, and the bottom film 63 folded in two at the bottom is sandwiched to form the bottom seals 65 and 65 by sealing the bottom, and the upper edge is opened (see FIG. 1)), the overhanging portions 14 and 14 can be processed on the inner and outer surface films 11 and 12 of the front and rear surfaces 10 and 10, respectively, by a single processing.

  According to the three-dimensional molding method for the two laminated synthetic resin films, since the two laminated synthetic resin films 10 and 10 are preliminarily heat-sealed 64 and 65, the two laminated synthetic resin films 10 are provided. , 10 at all, there is no possibility of misalignment, and it is not necessary to provide a margin for bonding in consideration of misalignment due to front / rear, left / right and processing elongation, and the processing accuracy can be improved.

  Furthermore, in such a three-dimensional molding method of the laminated film, in addition to the compression molding of the laminated film, a full cut process for cutting the laminated film and a process such as a half cut process for cutting the laminated film halfway can be performed in combination. In the rotary process using the forming roll, these processes can be combined in one rotation.

According to such a three-dimensional molding method and apparatus for a laminated film, the laminated synthetic resin film 10 in which at least the soft inner film 11 on the innermost surface and the outer surface film 12 with high strength on the outer surface side are laminated is cold in the thickness direction. By compression molding, the compression molding part 13 can be extended to the outer surface side to form the extension part 14, and the compression molding part 13 can be three-dimensionally molded.
As a result, there is no need for heating and cooling as in the prior art, energy such as electric power required for processing can be greatly reduced, processing time can be shortened, and high-speed processing can be performed.

Next, a packaging pouch 60 with a nozzle according to the present invention using a three-dimensional molding method of a laminated film is, for example, a standing pouch as shown in FIG. 1, and is between a plastic film-like front surface pouch piece 61 and a rear surface pouch piece 62. The bottom pouch piece 63 is folded and sandwiched between the two, and the periphery is heat-sealed to form left and right side seal parts (side seal parts) 64 and 64 and a bottom seal part 65, with the upper side opening and deployable. A space 66 for filling the bag-like contents with a simple bottom is formed, and a nozzle part 67 for pouring is formed at the upper corner.
The dispensing nozzle portion 67 is formed with throat portions 68 and 69 that are curved and cut out on both sides, so that a void 66 is formed toward a planned opening position such as an easy opening portion 71 provided with a notch 70. The opening portion 72 is provided on the seal portion that closes the nozzle portion 67 on the tip side of the easy-opening processing portion 71, and the peripheral edge portion is heat-sealed. A space 66 a is formed so as to reach the opening tab 72 beyond 71.
The packaging pouch 60 with a nozzle is filled with contents from the opening on the upper side, and then the upper side is heat sealed to form a sealed standing pouch.

  In this packaging pouch 60 with a nozzle, in order to facilitate the pouring from the nozzle portion 67, the front and back surface pouch pieces 61 and 62 on which the nozzle portion 67 overlaps are respectively projected outward along the central axis of the nozzle portion 67. The ridge line part 73 is formed in a straight line, and both sides of the ridge line part 73 are flat surfaces (see FIG. 2B), which is different from the conventional semicircular three-dimensionally formed part.

In this packaging pouch 60 with a nozzle, in addition to the ridgeline portion 73 of the nozzle portion 67, a substantially U between the side edge on both sides of the nozzle portion 67 and the tip edge of the opening tab 72 around the void 66 of the nozzle portion 67. A convex portion 74 is formed on the letter-shaped seal edge by cold molding the space 66 and the space 66a side of the tab across the seal edge.
The convex portion 74 is formed by cold-molding the front and back surface pouch pieces 61 and 62 across the seal edge, and the pouch pieces 61 and 62 with respect to the sealed pouch 60. A convex portion 74 is formed leaving an elongation strain.
Accordingly, as shown in FIG. 2B, the cross-sectional shape of the nozzle portion 67 is such that the convex portions 74 are formed from the end edges of the seal portions 64a of the throat portions 68 and 69, and the two convex portions 74, A ridge line portion 73 is formed at the center of 74, and a flat surface is formed between the convex portion 74 and the ridge line portion 73.

  Although the forming mechanism for generating elongation strain in these convex portions 74 and 74 is not necessarily clear, as shown in FIG. 3, the above-described lamination is performed by compression molding across the seal portion and the void. As in the three-dimensional molding method of the film, the void side is stretched and becomes a convex part 74, the seal part side can hardly be deformed, and a large elongation strain is generated by the concentration of deformation at the seal part, It is thought that it remains as it is.

  As a result, when the easy opening portion 71 which is the opening scheduled position is opened by the opening tab 62 at the tip of the nozzle portion 67, as shown schematically in FIG. 4, a table of the voids 66 of the opened nozzle portion 67. The back surface pouch pieces 61 and 62 are pushed from both side edges to promote the opening so as to separate the opposing ridge line portions 73 of the nozzle portion 67 and can be surely opened in a rhombus shape. Thus, it is different from the one that is formed in a cylindrical cross-sectional shape in advance and maintains the shape by reinforcing it.

Moreover, in this packaging pouch 60 with a nozzle, in addition to the ridge line portion 73 of the nozzle portion 67, curved front and back surface pouch pieces 61 and 62 of the pouch body portion have curved tensile convex portions 75 that protrude outward. 73, the central part is arranged in a concave shape when viewed from the base end side, and is formed leaving a tensile strain having a tensile component that pulls the ridge line part 73 toward the base end side, and a plurality of strips spaced substantially concentrically, In the illustrated example, five strips are formed (see FIG. 2C).
Then, the tip of the nozzle portion 67 slightly floats with respect to the pouch plane of the front surface pouch piece 61 or the back surface pouch piece 62 by the tensile convex portion 75.

The tensile convex portion 75 formed leaving the tensile strain is a front and back pouch piece in which a seal portion on the periphery of the nozzle portion 67 has already been formed in the same manner as the convex portion 74 formed on the seal edge of the nozzle portion 67. By forming the convex portions by cold-molding 61, 62, it is possible to generate a tensile strain that draws the pouch pieces between the seal portions, and in particular, the central portion of the nozzle portion proximal side is concave. By setting it as the curved shape which becomes, it can be set as the tension convex part 75 provided with the tension component which pulls the ridgeline part 73 to the base end side.
In the packaging pouch 60 with a nozzle in which the tensile convex portion 75 having such a tensile component is formed, when the unsealing processing portion 71 that is a position to be opened is opened by the opening tab 72 at the tip of the nozzle portion 67, FIG. As shown schematically, the ridges 73 and 73 of the front and back surface pouch pieces 61 and 62 at the center of the space 66 of the opened nozzle portion 67 are pulled toward the proximal end side, respectively. The ridges 73 and 73 facing each other can be separated to promote the opening, and in cooperation with the convex part 74, the opening can be more surely formed in a rhombus shape.

These tensile convex portions 75 are also formed in a cylindrical cross-sectional shape in advance like the conventional nozzle portions, and are greatly different from those that maintain the shape by reinforcing them. By leaving the strain and utilizing this tensile force, the opening is promoted.
Regarding the residual tensile strain, when the gap between the tensile convex portions 75 is cut with a cutter by the molded packaging pouch 60 with the nozzle, the nozzle portion 67 is turned into the front pouch piece 61 or the back surface pouch piece by the tensile convex portion 75. The existence of tensile strain is also confirmed from the fact that the tip slightly lifted from the 62 pouch plane and returned to the plane.

  In order to further increase the outward convex shape of the ridge line portion 73 and the tensile convex portion 75 with respect to the pouch surface, a portion indicated as a shaded portion in the drawing as shown in FIG. Is compression-molded so as to increase the frictional force by shot blasting or the like.

  If such a protruding convex part 75 is formed at the base end part of the nozzle part 67, it may be the base line for the nozzle part 67 to fall depending on the shape and arrangement, so that it is closest to the base end side of the ridge line part 73. The straight line 76 that connects both ends of the curve of the tensile convex part 75 and the ridge line part 73 intersect each other, and the nozzle part 67 is configured so that no straight valley line exists at the base end of the nozzle part 67. Prevents the base from falling over.

  Further, in this packaging pouch 60 with a nozzle, the seal portion of the nozzle portion 67 on the tip side from the easy-opening processing portion 71 that is the opening-scheduled position is folded, and as shown in FIG. A folded portion 77 is formed by folding the side portion side. The folded portion 77 of the unsealing tab 72 increases the rigidity, so that it is easy to apply a force for cutting, and the folded state in which the end surfaces of the front and back surface pouch pieces 61 and 62 are not exposed can be obtained.

  Furthermore, side folds 78 are also formed on the side seal portions 64 and 64 which are the side seal portions on the opening tab 72 side and the opposite side of the packaging pouch 60 with a nozzle, whereby the throat portion 68 is formed. Both sides of the packaging pouch 60 with a nozzle excluding the side seal part of the part are bent, the rigidity is improved, it is easy to hold and transfer, and the end faces of the front and back pouch pieces 61 and 62 are exposed. It is not bent.

The manufacturing method of such a packaging pouch 60 with a nozzle can be easily molded by using the already-described three-dimensional molding method.
In the packaging pouch 60 with a nozzle according to the present invention (see FIG. 1 and the like), full cut processing is performed for cutting the outer shape, and half cut processing 52 is performed for processing the easy-open processing portion 71 of the nozzle portion 67.
Moreover, the ridgeline part 73 of the packaging pouch 60 with a nozzle of this invention, the convex part 74 which left the elongation strain, the tensile convex part 75 which left the tensile strain, etc. are for forming the overhang part 14 by three-dimensional molding. The processing portion 43 of the compression site 13 may be compressed and molded by about 30% in the thickness direction, or if only one side is overhanged, the respective machining allowances may be adjusted so that it is compression molded by less than 30% in the thickness direction. The packaging pouch 60 with a nozzle having the ridge line portion 73, the convex portion 74 leaving the elongation strain, the tensile convex portion 75 leaving the tensile strain, and the like can be easily formed in one rotation using a forming roll. .
Further, if the surface of the forming roll is a surface that increases the frictional force such as satin by blasting or the like, three-dimensional forming can be more reliably and clearly formed.

  In the above embodiment, a standing pouch has been described as an example of a packaging pouch with a nozzle. However, the present invention is not limited to this, and can be applied to other shapes of pouches and pouches having different nozzle arrangements. is there.

There is no restriction | limiting in particular as a plastic film material used for such a packaging pouch 10 with a nozzle, What is normally used as a packaging pouch can be used.
Examples of resin materials suitable for constituting the film material include crystalline polypropylene, crystalline propylene-ethylene copolymer, crystalline polybutene-1, crystalline polybutene 4-methylpentene-1, low density polyethylene, medium density -Polyolefins such as polyethylene or high-density polyethylene, ethylene-vinyl acetate copolymer (EVA), ethylene-ethyl acrylate copolymer (EEA), ion-crosslinked olefin copolymer (ionomer); polystyrene, styrene-butadiene Aromatic vinyl copolymers such as copolymers; Halogenated vinyl polymers such as polyvinyl chloride and vinylidene chloride resins; Nitrile polymers such as acrylonitrile-styrene copolymers, acrylonitrile-styrene-butadiene copolymers; Nylon 6 , Nylon 66, para or me Such polyamides xylylene adipamide, polyethylene terephthalate, polyesters polytetramethylene terephthalate; various polycarbonates; may be mentioned thermoplastic resins such as polyacetal such as polyoxymethylene or the like.
Moreover, the film material which consists of these materials is used unstretched, uniaxially stretched, or biaxially stretched.
Furthermore, the film material used for the packaging pouch 10 with a nozzle can be constituted by laminating these film materials in a single layer, or by laminating two or more kinds, or one kind of these film materials, or Two or more kinds of metal foils such as aluminum, metal or metal oxide vapor-deposited films, paper, cellophane, and the like can be bonded together.
Preferred film materials include, for example, a stretched nylon film as an outer layer, a two-layer structure having a polyolefin film such as low density polyethylene and polypropylene as an inner layer, a stretched polyester film as an outer layer, and a two-layer structure having a polyolefin film as an inner layer, and Among these, a film having a three-layer structure in which a metal foil such as aluminum is laminated between outer layer films, and the like are included. In the production of these laminated films, an adhesive and an anchor agent are interposed between the respective layers as necessary. You can also.
And the layer structure of the said film material is selected according to the property of the content with which the packaging pouch 10 with a nozzle is filled, for example, when low cost is requested | required like the packaging pouch for refill detergents When a two-layer laminated film is used and storage stability is required like a seasoning pouch container, a three-layer or more laminated film including an aluminum foil may be used.

10 Laminated synthetic resin film (Laminated film)
11 inner surface film 12 outer surface film 13 compression part (compression molding part)
14 Overhang part (three-dimensional molded part)
30 Flat pressing device 31 Punch 32 Anvil 33 Processing unit 40 Rotary processing device 41 Forming roll 42 Forming roll 43 Processing unit 60 Packaging pouch with nozzle (standing pouch)
61 Surface pouch piece 62 Back surface pouch piece 63 Bottom pouch piece 64 Side seal part 64a Throat seal part 65 Bottom seal part 66 Space 66a Tab space 67 Nozzle part 68 Throat (side)
69 Throat (upper side)
70 Notch 71 Easy opening portion 72 Opening tab 73 Edge portion 74 Convex portion 75 Tensile convex portion 76 Straight line 77 connecting both ends of the tensile convex portion closest to the ridge line portion Tab folded portion 78 Side seal portion side Folded part R Direction of rotation of forming roll

Claims (8)

The peripheral portion where the film-like pouch pieces are overlapped is sealed to form a space for filling the contents, and the dispensing nozzle portion with the width of the space narrowed toward the planned opening position is the peripheral portion. A packaging pouch with a nozzle formed by sealing a part,
On the pouch piece where the nozzle part overlaps, a convex ridge line part is formed on the outside along the central axis of the nozzle part,
A protruding convex portion is formed on the outer side of at least one pouch piece leaving a strain extending from the seal edge between the seal portion on both side edges of the nozzle portion and the seal portion of the opening tab on the tip edge. A packaging pouch with a nozzle, characterized in that the opening of the nozzle part can be promoted by pushing the nozzle part space opened at the planned opening position from both side edges with the convex part.   On the pouch piece on the base end side of the ridge line portion, a tensile convex portion that is convex outward is formed leaving a tensile strain having a tensile component that pulls the nozzle portion on the base end side of the ridge line portion. 2. The packaging pouch with a nozzle according to claim 1, wherein opening of the pouch pieces can be promoted by pulling a void of the opened nozzle portion.   The tensile convex portion is formed in a curved shape having a concave central portion on the base end side of the ridge line portion, and the straight line connecting the both ends of the tensile convex portion on the most ridge line portion side intersects with the ridge line portion. The packaging pouch with a nozzle according to claim 2, wherein the packaging pouch is arranged as described above.   4. The packaging pouch with a nozzle according to claim 2 or 3, wherein the tensile convex portion is formed by forming a plurality of strips at intervals.   The packaging pouch with a nozzle according to any one of claims 1 to 4, wherein a folded portion is formed by folding the seal portion of the nozzle portion closer to the tip side than the planned opening position.   The packaging pouch with a nozzle according to any one of claims 1 to 5, wherein a side folded portion is formed by folding a side seal portion at a peripheral edge of the pouch piece. A pouch piece made of a laminated synthetic resin film laminated with at least a soft inner surface film on the innermost surface and a high strength outer surface film on the outer surface side is overlapped, and the side edge portion is side sealed, and the lower edge portion is sealed bottom. A nozzle formed by sealing a peripheral portion with a dispensing nozzle portion that forms a void for filling contents whose upper edge portion is opened and narrows the width of the void toward the planned opening position. When manufacturing a packaging pouch with
A method of manufacturing a packaging pouch with a nozzle, wherein the pouch piece is cold-formed in the thickness direction, and the compression-molded part is projected to the outer surface side.
Compression molding is performed in the thickness direction in a cold manner so as to straddle the seal portion where the seal is applied and the space, and an elongation strain is generated in the space near the seal portion so that at least one pouch piece protrudes outward. The manufacturing method of the packaging pouch with a nozzle characterized by forming the convex part of this.   On the pouch piece on the base end side of the nozzle portion, the peripheral edge portion of which is sealed, a tensile convex portion protruding outward is formed by cold compression molding, and a tensile component that pulls the nozzle portion toward the base end side is formed. The method for producing a packaging pouch with a nozzle according to claim 7, wherein the tensile strain is generated.

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