JP5396622B2 - Liquid pouring nozzle for food and beverage packaging bag and manufacturing method thereof - Google Patents

Description

The present invention, one and the shaft or biaxially oriented base film layer, it interposed therebetween relates liquid dispensing nozzle and a method for their preparation of food and drink for packaging bag composed of a laminated film comprising a sealant layer of each laminated It is. In particular, in a soft packaging bag for food and drink having a liquid pouring nozzle formed from a base film layer and a laminated film comprising the respective sealant layers laminated therebetween, the base film layer and the sealant layer The present invention proposes a technique for preventing adhesives, anchor coat materials, inks, and the like used in between from coming into contact with an in-bag package.

  A liquid pouring nozzle and a flexible packaging bag using the same are disclosed in, for example, Patent Document 1. In this case, the liquid pouring nozzle is composed of a uniaxially or biaxially stretched base film layer and a laminated film on both sides, each of which is laminated with the uniaxially or biaxially stretched base film layer interposed therebetween, with one sealant layer facing each other Since each of the laminated films on the front and back sides has a base film layer and a sealant layer, an adhesive layer or an anchor coat layer is provided between the base film layer and the sealant layer. And sometimes have an ink layer for printing applied to the base film layer.

  Moreover, the packaging bag using such a liquid pouring nozzle has the outer surface of the base end portion of the liquid pouring nozzle attached to the inner surface of the packaging bag body at the side or top of the soft packaging bag body. The structure is formed by fusion bonding.

JP-A-2005-59958

However, this prior art, the liquid pouring nozzle hits the fusing bonded to the packaging bag body, the base end side of the liquid pouring nozzle, to place to coincide with the inner edge of the fused portion of the packaging bag body Therefore, when the liquid or the like as an article to be packaged in the soft packaging bag comes into contact with the base end side of the liquid pouring nozzle, for example, when it is poured out, it is exposed to the base end side of the liquid pouring nozzle. Since the adhesive layer or anchor coat layer, and sometimes the ink layer, of the laminated films on the front and back sides also come into contact with each other, there are safety and hygiene problems when the package is food or drink.

The present invention has an object to solve the above problems the prior art has faced comprises a first shaft or biaxially oriented base film layer, each of the sealant layer laminated sandwich it Fully prevent the adhesive layer, anchor coat layer, ink layer, etc. from being exposed on the end face of the laminated film , and reliably prevent contact between the food and drink and the adhesive layer, etc., which is the in-bag package of the soft packaging bag. The present invention provides a liquid dispensing nozzle for food and beverage packaging bags and a method for producing the same.

That is, the present invention is a laminated film of two front and back surfaces comprising a uniaxial or biaxially stretched base film layer and respective sealant layers laminated with the uniaxial or biaxially stretched base film layer, or a single sheet folded in two at the central portion. The peripheral edge of the laminated film excluding the portion that becomes the nozzle base end side is fused and the pouring channel is defined inside thereof, and the nozzle base end side is connected to the package storage space of the packaging bag body. In a liquid pouring nozzle for food and beverage packaging bags that are fusion bonded to the packaging bag body in a protruding state, the sealant layer that is the outer surface of the laminated film constituting the nozzle is lower than the sealant layer on the inner surface side of the nozzle made from those melting point of the laminate film in contact with the food or beverage packaged articles protrude packaged articles contained within a space of the packaging bag body, the whole of the portion projected to be packaged storage space, from above and below Pinch Heating pressurized Te Unishi, each sealant layer laminated sandwiching the base film layer, thereby protrude from the edge and side edges of the base film layer to each other by joining fusing different the sealant layer to each other in melting point Thus, the present invention proposes a liquid pouring nozzle for a food and beverage packaging bag characterized by covering the end face and the side face of the base film layer.

In addition, the liquid pouring nozzle manufacturing method according to the present invention includes a uniaxially or biaxially stretched base film layer, and each sealant laminated with the base film layer sandwiched between the adhesive layer and the anchor coat layer. Fusing the peripheral part except the part that becomes the nozzle base end side of the laminated film of two sheets of front and back that have a layer, or one laminated film that is folded in two at the center, A liquid injection for a food and beverage packaging bag in which a dispensing flow path is defined inside the portion, and the nozzle base end is fusion-bonded to the packaging bag body in a protruding state into the package storage space of the packaging bag body. When manufacturing the exit nozzle, the sealant layer that is the outer surface of the nozzle of the two front and back laminated films that make up the nozzle or the one that is folded back in the middle is more than the sealant layer on the inner surface side of the nozzle. Low melting point Consists ones, of the laminate film in contact with the food or beverage packaged articles protrude packaged articles contained within a space of the packaging bag body, the whole of the portion projected to be packaged storage space, so as to sandwich from above and below Each of the sealant layers laminated by sandwiching the base film layer by heating and pressurizing is protruded from the edge and side edges of the base film layer, and the sealant layers having different melting points are fused and bonded to each other. After that, the front and back laminated films or one laminated film folded in two at the center is fused at the peripheral edge except for the base end side of the nozzle. The manufacturing method of the liquid extraction nozzle for bags is proposed.

In the present invention, in each sealant layer on both the front and back sides, laminated on the uniaxial or biaxially stretched base film layer with the base film layer sandwiched under the action of an adhesive layer, an anchor coat layer, etc. The surface sealant layer has a lower melting point than the sealant layer on the inner surface of the nozzle, and in the laminated film, protrudes into the package storage space of the packaging bag body and comes into contact with the food and beverage package . Each sealant layer protrudes from the edge and side edges of the base film layer, and the sealant layers having different melting points are fusion-bonded to each other in the entire portion protruding into the package storage space. Thereby, exposure of an adhesive bond layer, an anchor coat layer, etc. in the end surface and side surface of a laminated film can be prevented.

By the way, in manufacturing the liquid pouring nozzle, the sealant layer that is the outer surface of the nozzle of the two laminated films on the front and back sides or the one laminated film that is folded back at the center is formed on the inner surface side of the nozzle. It is made of a material having a lower melting point than the sealant layer, and the entire portion of the laminated film that protrudes into the packaging bag body and comes into contact with the food / beverage product packaging space is projected from above and below the packaging material storage space. heating and pressing, the base film layer, respectively of the sealant layer located at a, for example, silicone, by heat sealing plate or the heat seal roller or the like which has been subjected to release treatment by polytetrafluoroethylene, edges of the base film layer and thereby protrude from the side edge to each other by fusing joining different the sealant layer to each other in melting point, those two Sheeran When the layer completely covers the adhesive layer, anchor coat layer, etc., and makes the layer latent, and then forms the required liquid dispensing nozzle by fusion bonding, the manufactured liquid dispensing nozzle In the same way as described above, when the bag is joined to the packaging bag body, the risk of contact with the packaging material in the bag such as the adhesive layer and anchor coat layer of the liquid dispensing nozzle is surely removed. be able to.

And this means that, for example, a nozzle film having a number of nozzles having shapes and dimensions corresponding to the liquid pouring nozzles is run in advance with respect to the film for a flexible packaging bag body that is continuously run, Heat sealing the base end of the nozzle to one side of the inner surface of the packaging bag body film on one outer surface of the sealant layer having a lower melting point than the sealant layer on the inner surface of the nozzle, The nozzle is fused to the packaging bag main body film, and then unnecessary portions of the nozzle film are separated from the check nozzle and removed, and the front surface film portion and the back surface film portion of each nozzle are both removed. in intervening under release material to between film portions, for example heating and pressing integrally by heat sealing means as described above, the nozzle, the packaged articles housed scan The entire portion which is projected to over scan, each film portion sides, each sealant layer laminated sandwiching the base film layer, to each other through a protruded state from the end and side edges of the base film layer The same applies to the case where the liquid dispensing nozzle is manufactured by fusing.

Moreover, in this case, the nozzle manufactured in advance is attached to the film for the packaging bag body during the feeding run for the automatic filling and packaging of the packaging bag body film in the filling and packaging machine, and a predetermined liquid injection is performed. Since it can be formed on the discharge nozzle, the liquid dispensing nozzle can be manufactured more efficiently than when the individual sealant layers located on both sides of the base film layer are fused and bonded together in other independent processes. can do.

  By the way, these things, for example, locate the base end side of the nozzle having a shape and dimensions corresponding to the liquid dispensing nozzle in the region corresponding to the fusion part of the side or top of the soft packaging bag body, Under the presence of a release material between the respective film portions on the front and back of the nozzle, the flexible packaging bag main body film is heated and pressurized from the outer surface side of the packaging bag main body film by heat sealing means. In the fusion region of the formed flexible packaging bag body, the surface is fused to the inner surface of the packaging bag body while securing a pouring flow path, and at the base end side of the nozzle, The same applies to the case where each of the sealant layers laminated with the base film layer sandwiched between the film portions is eaten from the edge of the base film layer and fused together to form a liquid dispensing nozzle.

It is a figure which shows embodiment of the liquid extraction nozzle which concerns on this invention. It is sectional drawing which illustrates the manufacturing process of a liquid extraction nozzle. It is a photograph which shows the cross section of the liquid extraction nozzle fuse | melted by the flexible packaging bag main body.

Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a view showing an embodiment of a liquid dispensing nozzle according to the present invention, and FIG. 1 (b) is an enlarged cross-sectional view taken along line bb of the nozzle side view shown in FIG. 1 (a). . The hatched portion in the figure is provided on the peripheral edge of the laminated film of the front and back two sheets or one laminated film folded in two at the central part excluding the part serving as the base end side of the nozzle. The fusion-bonded portion 1 is shown, and the fusion-bonded portion 1 is formed by dividing the tip-fused portion 2 by cutting or removing the tip-fused portion 2 so as to be partitioned by the fusion-bonded portion 1. A spout can be formed at the tip of 3.

  By the way, the liquid pouring nozzle 4 has a base end portion fusion bonded to the side portion of the soft packaging bag main body 5 shown by the phantom line in FIG. Part of it.

  As shown in FIG. 1B, each of the surface-side film portion 6 and the back-side film portion 7 of the liquid pouring nozzle 4 includes base film layers 8 and 9 that are uniaxially or biaxially stretched, and each base. The adhesive layers 10 and 11 having a thickness of about 3 to 8 μm or the anchor coat layer having a thickness of about 0.1 to 0.5 μm and sometimes one of the base film layers 8 and 9 are sandwiched between the films 8 and 9. It consists of sealant layers 10a, 10b and 11a, 11b laminated on both sides through a printing layer provided on the surface, and the sealant layers 10a, 11a on the outer surface side are the inner surface. The sealant layers 10b and 11b on the side have a lower melting point, and the liquid pouring nozzle 4 itself sandwiches the base film layers 8 and 9 of the front and back film portions 6 and 7, respectively. Each of the sealant layers 10a, 10b and 11a, 11b laminated at the base portion 4a of the liquid pouring nozzle 4 protrudes from the edge position of the base film layers 8, 9 indicated by the one-dot chain line in the figure. The sealant layers 10a, 10b and 11a, 11b having different melting points are fusion-bonded to each other, and the adhesive layers 10, 11 etc. are completely covered with the sealant layers 10a, 10b and 11a, 11b. is there.

  In addition, 12 in the figure is formed at the fusion-bonding portion on the lower side of the liquid pouring nozzle 4, and after the liquid or the like to be packaged is poured from the soft packaging bag 13, the packaging bag 13 A liquid draining projection for preventing the article to be packaged from flowing down to the fusion splicing portion 1 of the liquid pouring nozzle 4 and flowing down to the packaging bag body 5 side when standing up and returning is shown.

  The liquid pouring nozzle 4 configured as described above has adhesives for the respective film portions 6 and 7 on the front and back sides in the bonding state as shown in FIG. Since the layers 10, 11 and the like are all covered by the sealant layers 10a, 10b and 11a, 11b at the base end side 4a of the liquid pouring nozzle 4, the packaging bag body 5 of the liquid pouring nozzle 4 is covered. Even if the base end side 4a of the liquid pouring nozzle 4 may come into contact with the package in the flexible packaging bag 13, the adhesive layers 10, 11 and the like, When the flexible packaging bag 13 is in a standing posture, it is sufficiently prevented by the sealant layers 10a, 10b and 11a, 11b, regardless of whether the flexible packaging bag 13 is in a tilting posture during the pouring of the liquid, etc. Will be.

Here, when the liquid pouring nozzle 4 is joined to the packaging bag main body 5 in a somewhat projecting posture of the base end portion of the packaging bag main body 5 into the packaged article storage space, the liquid pouring nozzle 4 is used. In addition to the base end side 4a of the outlet nozzle 4, not only the base end side 4a of the fusion bonded part 1 but also the base film layers 8 and 9 are protruded into the package storage space adjacent to the base end side 4a. The respective sealant layers 10a, 10b and 11a, 11b stacked between each other are protruded from the base film layers 8, 9 and fusion bonded, and the adhesive layers 10, 11 etc. are bonded to the sealant layers 10a, 10b. and 11a, by covering at 11b, bag contact with the packaged articles and the adhesive layer 10, 11, etc. more fully proof equipment.

  FIG. 2A is a cross-sectional view illustrating one process applied to the front and back film portions 6 and 7 for manufacturing the liquid pouring nozzle 4 as described above. Each of the films or one side of the laminated film that is folded in two at the center, which will later be the base end 4a of the liquid pouring nozzle 4, where one film portion 6, 7 and a pair of heat seal plates 21 having different melting points, for example, a pair of heat seal plates 21 subjected to a release treatment with, for example, silicone, polytetrafluoroethylene, etc. 11b are heated and pressed from above and below in the drawing, and the sealant layers 10a, 10b and 11a, 11b laminated with the base film layers 8 and 9 sandwiched are melt-flowed together. The sealant layers 10a, 10b and 11a, 11b are protruded from the layer edges 8a, 9a of the base film layers 8, 9, and the sealant layers 10a, 10b and 11a, 11b are fused to each other. Adhesive layers 14, 11, etc. that are exposed at the end faces of the front and back film portions 6, 7 are completely covered with the fusion bonded portion 14 formed in this manner.

  As mentioned above, although the case where the fusion-bonding part 14 which covers the adhesive bond layers 10 and 11 etc. was formed with the heat seal plate 21 which makes a pair was described, it replaces with those heat seal plates 21 and is shown with a virtual line in the figure. Thus, while using a pair of heat seal rolls 22 that have been subjected to the same release treatment, the side portions of the film portions 6 and 7 are sandwiched therebetween, and the paper surface along the side portions of the rolls 22 and Based on the relative rolling in the orthogonal direction, each of the sealant layers 10a, 10b and 11a, 11b can be heated and pressurized to form the same fusion-bonded portion 14. As compared with the case where the heat seal plate 21 is used, the fusion bonded portion 14 has an advantage that it can be formed continuously and at a high speed.

  By the way, after forming the fusion bonding part 14 covering the adhesive layers 10, 11 and the like in this way, it is composed of two laminated films on the front and back sides or one laminated film folded in two at the center. The sealant layers 10b are positioned opposite to each other at the peripheral portions except the peripheral edge 14a of the fusion splicing portion 14, where the front and back film portions 6 and 7 are the base end side 4a of the liquid pouring nozzle 4. 11b, for example, is formed by fusion bonding with the heat sealing means as described above, thereby forming the liquid dispensing nozzle 4 in which the required dispensing flow path 3 is partitioned.

  By the way, for the liquid pouring nozzle 4 manufactured in this way, the flexible packaging bag main body film is folded in half at the center in the width direction, and the inner surface sealant layer on the other side is formed. In addition, the surface side film portion 6 of the manufactured liquid pouring nozzle 4 is fusion-bonded to the lower melting point outer surface sealant layer 10a, and the packaging bag body film itself is attached to the bottom or top of the packaging bag. The required flexible packaging bag 13 can be manufactured by forming the fused part.

  In the liquid pouring nozzle 4 manufactured in this way, the adhesive layers 10, 11 and the like are completely covered with the sealant layers 10a, 10b and 11a, 11b as shown in the cross-sectional photograph of FIG. Even if the in-bag package of the soft wrapping bag 13 comes into contact with the base end side 4a of the liquid pouring nozzle 4, the contact between the adhesive layers 10, 11 and the like and the in-bag package is melted. Since it will be reliably blocked by the bonded joint portion 14, it is possible to always ensure sufficient safety and hygiene.

The liquid pouring nozzle for a food and beverage packaging bag according to the present invention and the method for producing the same can be widely used in fields requiring high safety and hygiene, soy sauce, sauce, various seasonings , soups, other fruit juices, other particulate matter with include liquid or viscous-like food and a packaging bag is heated at a high temperature such as retort foods, other than food, cosmetics, pharmaceuticals, etc. It can be suitably used for a flexible packaging bag.

DESCRIPTION OF SYMBOLS 1 Fusion junction part 2 Tip fusion | fusion part 3 Outflow flow path 4 Liquid extraction nozzle 4a Base end side 5, 17 Soft packaging bag main body 6 Surface side film part 7 Back surface side film part 8, 9 Base film layer 8a, 9a Base film layer edge 10, 11 Adhesive layer 10 a, 10 b, 11 a, 11 b Sealant layer 12 Liquid drain protrusion 13 Soft packaging bag 14 Fusion joint 14 a Edge 15 Nozzle 15 a Base edge 16 Nozzle film 17 a Soft packaging bag body Fusion part 21 Heat seal plate 22 Sheet seal roll

Claims (2)

Nozzle base of two front and back laminated films comprising a uniaxial or biaxially stretched base film layer and respective sealant layers laminated therebetween, or a single laminated film folded in two at the center. The peripheral part of the packaging bag body is formed by fusing the peripheral part excluding the part to be the end side and partitioning the pouring channel inside the peripheral part, and the nozzle base end side protruding into the package storage space of the packaging bag body In the liquid dispensing nozzle for food and beverage packaging bags that are fusion-bonded to
Of the laminated film constituting the nozzle, the sealant layer comprising a nozzle outer surface made from those from the sealant layer of the nozzle inner surface side of the low melting point, of the laminate film, the packaging bag body of the packaged articles contained within a space projecting contact with food products to be packaged in the whole of the portion projected to be packaged storage space, heated and pressurized so as to sandwich from above and below, the respective sealant layers laminated sandwiching the base film layer, the base film layer For the food and beverage packaging bag, wherein the sealant layers having different melting points are protruded from the end edges and side edges of the base film layers, and the base film layer end faces and side faces are covered with each other. Liquid pouring nozzle. Nozzle base of two front and back laminated films comprising a uniaxial or biaxially stretched base film layer and respective sealant layers laminated therebetween, or a single laminated film folded in two at the center. The wrapping bag body is formed by fusing the peripheral edge portion excluding the end portion, partitioning the pouring channel on the inner side, and the nozzle base end projecting into the package storage space of the wrapping bag body In manufacturing liquid dispensing nozzles for food and beverage packaging bags that are fusion-bonded to
The sealant layer that is the outer surface of the nozzle of the two front and back laminated films constituting the nozzle or the one laminated film that is folded back at the center part has a lower melting point than the sealant layer on the inner surface side of the nozzle, of the laminate film, and projects packaging bag body of the packaged articles contained within a space in contact with the food or beverage to be packaged, the entire portion which is projected to be packaged storage space, heated and pressurized so as to sandwich from above and below, The sealant layers laminated with the base film layer sandwiched between them are protruded from the edge and side edges of the base film layer, and the sealant layers having different melting points are fusion-bonded to each other. One laminated film or one laminated film folded in two at the center is fused at the peripheral edge except for the base edge of the nozzle. Method of manufacturing a liquid dispensing nozzle for the food and beverage packaging bag.

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