JP2010155651A - Small bag for self-support type liquid package - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To develop and propose a structure for easily self-supporting a non-self-support flat small bag made of flexible laminated film and to prevent film residuals from being separated from a bag body when opening a discharging passage of the small bag. <P>SOLUTION: The small bag for self-support type liquid package is formed by heat-sealing the laminated film into a bag. In this bag, the top of a bag body has a mouth stopper projecting in the shape of one of various caps. The lower part of the bag body has a leg bottom for self-support, in which a groove-like cutting line is formed so as to extend from sealed portions of both sides to a laterally heat-sealed portion of the lower side. A tear-open guide line for opening the bag is formed in a boundary portion between the mouth stopper and bag body. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a sachet for self-supporting liquid packaging, and in particular, encloses liquid cosmetics such as shampoos, rinses, creams, detergents, or liquid seasonings such as soy sauce, sauces, dressings, and ketchups, and is originally disposable. Therefore, the present invention relates to a liquid packaging sachet having a structure in which a flat bag-like sachet used in a non-self-supporting manner can be made to stand on a desktop or the like when left over.

  In general, in the case of liquid seasonings such as soy sauce, sauces, and noodle soup that are attached to take-out foods such as shampoos, rinses, lunch boxes, and cup noodles, they are contained in small flat bags that are not self-supporting. It is hermetically filled. Since it is manufactured on the assumption that it will be used up, it usually has a structure that is not self-supporting even though an extraction passage is provided in the heat seal portion.

  On the other hand, as a self-supporting bag, a large bag used for the purpose of refilling (refilling) has been proposed as a gazette-type self-supporting bag having a trapezoidal bottom in, for example, Patent Document 1. In addition, in Patent Document 2, in order to improve the self-supporting property and the pouring property of the bag, in order to ensure the stability of the self-supporting shape in Patent Document 3, A self-supporting bag of a type in which the bottom is not bonded to the side is disclosed.

  In the case of such a sachet, generally, as shown in Patent Document 4, the one having a pouring passage in the vertical seal or the horizontal seal (mostly the boundary portion) is used, but sometimes in the case of a refill bag As shown in Patent Document 2, there has also been proposed a type in which a spout is provided at the upper end of the bag body, and the head is cut off and opened.

  However, the self-supporting bags disclosed in Patent Documents 1, 2, and 3 are all large-sized to medium-sized soft packaging bags made of a soft laminated film or the like with a large amount of liquid material to be filled. It is targeted. On the contrary, since these packaging bags lose their independence stability when the filling amount increases, the gusset has a bottom having a bottom shape and a trapezoidal shape with a devised vertical seal and / or horizontal seal. It is essential to make a bag. Of course, the flat bag-like sachet that is the subject of the present invention has a small filling amount and a high cost, and therefore it is not necessary to make a bag having such a gusset-type free-standing bottom.

  Further, in a packaging bag as disclosed in Patent Document 4 in which a head including a spout part is cut for opening, a separated film piece often flows into a drainage drain in a sink of a kitchen or a washroom. There was also the problem of causing tube clogging.

  Accordingly, the first object of the present invention is to develop and propose a structure of a sachet that allows a non-self-supporting flat bag-like sachet made of a soft laminated film to be easily self-supported without being made a gusset bottom. There is.

  The second object of the present invention is to propose a new configuration of a tear guide line portion for preventing film pieces and the like from being separated from the bag body when opening the pouch dispensing passage.

  As a result of diligent research to overcome the above-mentioned problems of the prior art and realize the above-mentioned object, the inventors have come up with the following solution. That is, the present invention is a sachet formed by heat-sealing two front and back laminated films into a bag shape, and the sachet is poured out on the top of the bag body to simulate various cap shapes. A plug portion provided with a passage is provided in a projecting manner, and a lower portion of the bag body is provided with a leg bottom portion having a groove-like cut line formed on both side vertical seal portions and a lower horizontal heat seal portion, A self-standing type liquid packaging pouch characterized in that a tear guide wire for opening is provided at a boundary portion between the cap portion and the bag body.

In the present invention according to the above configuration,
(1) A boundary portion between the plug portion and the bag body has a tear propagation preventing portion in the middle of the tearing direction of the tear guide line or in an extension position thereof.
(2) The tear propagation preventing portion is formed of an arc-shaped cut or punched hole provided facing the tear guide line,
(3) The groove-shaped cut line is formed by a trapezoidal cut, and a fold line is provided at the upper end portion of the longitudinal heat seal portion in a protruding manner,
(4) The leg bottom portion becomes a self-standing leg bottom portion when a portion below the groove-shaped cut line is folded in the thickness direction of the bag to form a screen-like shape,
(5) The bag body is a non-self-supporting flat bag made of a soft two-layer or three-layer laminated film, and comprising a three-side seal bag or a four-side seal bag having at least a lower lateral heat seal and a two-side vertical seal To become a,
Provides a more preferred solution.

According to the present invention configured as described above,
(1) Since the top of the bag body has a shape that protrudes from the cap made by imitating the shape of various caps, when the design of various containers is printed on the surface, it looks as if the appearance of the appearance is packaged It can be felt that the product (shampoo, soy sauce, mayonnaise et.) Container is there, and it is excellent in design, and can provide a sachet with excellent product appeal and display effect.
(2) Although it is a flat bag-like sachet made of a soft laminated film, it has a groove-like cut line in the lower part of the bag body to cause the bottom of the leg to become a screen-like shape. As a result, it is possible to easily stand on its own, so that even if it is left over, it can be held in a standing position without spilling the package, and temporary storage and storage are also possible.
(3) Since the tear propagation preventing portion is provided in the middle of the tearing direction of the tear guide line provided at the boundary portion between the top plug portion and the bag body or at the extension position thereof, the plug portion is provided for opening. Even when the cutting is advanced, the progress of tearing is stopped at that portion, so that the film piece does not leave the bag body and the drain pipe is not clogged.

It is a front view of the pouch according to the present invention. It is a perspective view of the state which raised the leg bottom part of the pouch. It is a front view of the plug part which shows the detail of a tear guide wire. It is a front view which shows the state which torn a part of spout part.

  As shown in FIG. 1, the liquid packaging sachet of the present invention basically comprises a rectangular bag body 1 and a spout 2 projecting from the top of the bag body 1. It is used as a design pouch printed with a typical container pattern such as mayonnaise, ketchup or shampoo, rinse, cream and the like. The example shown in FIG. 2 is a printed example of a shampoo container, but the design can be freely selected.

  One of the features of this sachet is that a bag body that is not self-supporting because it is formed of a flat bag made of two soft laminated films on the front and back sides becomes a self-supporting bag. That is, the main use of such sachets is disposable bags that are supposed to be used up only once. However, sometimes it is necessary to prevent liquid contents (packaged items) from spilling out if they cannot be used up temporarily or if you want to stop using them temporarily. become. In the present invention, a structure satisfying such a demand is imparted to the sachet.

  In order to meet the above-described demand, in the present invention, a groove-shaped score line 3 (which may be a quadrangle), which is a reverse trapezoidal shape, is formed at the bottom of the bag body 1, and the lower (bottom) horizontal heat seal portion and the vertical lengths on both sides A leg bottom portion is formed which is inserted over the heat seal portion and provides independence to a portion below the cut line 3, and the outside of the groove-like cut line 3 (that is, the portion of the leg bottom portion 4) is transferred from the bag body 1 to FIG. As shown in Fig. 4, the screen is folded up in the thickness direction of the bag to form a partition, and a stable stepladder shape is provided between the lower end of the leg bottom 4 and the remaining lower end of the bag body 1 so that it can stand on its own. The groove-like cut line 3 is effective in terms of preventing unexpected film breakage and bag breakage, not having a complete cut-out but having a part of the perforation left uncut.

  Therefore, in the present invention, the bag body 1 has at least a bottom and both sides, that is, a lower lateral heat seal 5 and both longitudinal heat seals 6, 6 ′ in order to form an inverted trapezoidal groove-like score line 3. It is required to use a one-side seal bag or a four-side seal bag.

  The sachets are manufactured using, for example, a soft synthetic resin laminated film having a two-layer structure of base film / silent layer and a three-layer structure of base film / intermediate layer / sealant layer. As the base film, NY, PET or the like is used, and as the material of the intermediate layer, Al, NY, PET, EVOH, silica, alumina, aluminum, or the like, or polyvinylidene chloride coating is suitable. It is. Further, as the sealant layer, LLDPE, CPP or the like can be used. From the viewpoint of imparting rigidity necessary for self-supporting, it is preferable to use an intermediate layer in which aluminum is laminated.

  The sachet manufacturing method, in particular, the groove-like cut line 3 is formed by cutting with a punching device synchronized with a continuous bag filled with an automatic filling machine. At the same time, as shown in FIGS. 1 to 4, it is possible to provide a pouch having both design and functionality by punching various container shapes into unique shapes including caps.

  In the present invention, the upper ends of the groove-shaped cut line 3 are provided with fold lines 7 and 7 'that are in the longitudinal heat seals 6 and 6' and project in a wing-like shape projecting sideways. It is preferable to help to fold the part 4. By doing so, a stable self-standing state can be secured between the lower surface of the leg bottom portion 4 and the lower end of the bag body 1.

  In the present invention, as described above, the top portion of the bag main body 1 is provided with a plug portion 2 that is made in the shape of a cap (lid) shape of various containers. The plug part 2 is heat-sealed on both sides and the top part, and the central part is an extraction passage 8 communicating with the bag body, and the opening is a planned opening line provided in the plug part 2. That is, it is achieved by tearing the position of the tear guide wire 9 formed by processing the tear guide rod with a laser or the like in a portion other than the base film. Accordingly, in the present invention, the tear guide wire 9 is formed at the base portion of the plug portion 2 or in the vicinity thereof, for example, at the boundary portion between the plug portion 2 and the bag body 1. It is exactly equivalent to opening the cap (lid).

  In the present invention, with respect to the tear guide wire 9, at the boundary portion between the plug portion 2 and the bag main body 1, a tear propagation preventing portion 10 is provided in the middle of the tear guide wire 9 in the tear direction or at an extended position thereof. Form it. Because of the tear propagation preventing portion 10, the tear stress is stopped at this portion, and the tear does not progress further, so that the so-called plug portion 2 is always connected to the bag body 1.

  In addition, it is preferable that the tear progress preventing portion 10 is formed by a circular or elliptical cut such as a circle or an ellipse provided opposite to the tear guide wire 9 or a punched hole having the same shape. In short, because of the presence of the tear propagation preventing portion 10, even when the plug portion is cut forward for opening, the film piece is not separated from the bag body and does not flicker around. Will not be invited.

  In addition, since the action of the tearing-inhibiting portion 10 such as the arc-shaped cut does not stop as much as possible to prevent the film piece from scattering, it is connected to the main body indefinitely, so even when it is held by hand when the pouch is self-supported. Conveniently used.

  The present invention is intended for sachets filled with liquids such as liquids or viscous substances, and solid-containing liquids. However, the present invention is applied to a part of gussets of so-called large bags and gusset bags originally provided with self-supporting properties. May be.

DESCRIPTION OF SYMBOLS 1 Bag main body 2 Plug part 3 Groove cut line 4 Leg bottom part 5 Lower horizontal heat seal 6, 6 'Both-side vertical heat seal 7, 7' Fold line 8 Outlet passage 9 Tear guide line 10 Tear progress prevention part

Japanese Patent Publication No.57-7984 JP 11-321886 A JP 2000-21655 A JP 2000-203603 A

Claims (6)

A sachet formed by heat-sealing two front and back laminated films into a bag shape, and this sachet is provided with a dispensing passage made in the shape of various caps at the top of the bag body. A spout is provided on the bottom of the bag body, and a bottom of the leg formed with a groove-like cut line is provided at the bottom of the bag body so as to extend to both sides of the vertical seal part and the lower side heat seal part. A pouch for self-supporting liquid packaging, characterized in that a tear guide wire for opening is provided at the boundary with 2. The self-supporting liquid packaging according to claim 1, wherein a tear progress preventing portion is provided in the middle of the tearing direction of the tear guide line or at an extended position at a boundary portion between the spout portion and the bag body. Sachets. The self-standing type liquid packaging pouch according to claim 1 or 2, wherein the tear propagation preventing portion is formed by an arc-shaped cut or punched hole provided facing the tear guide line. The groove-shaped cut line is formed by a trapezoidal cut, and a fold line is provided at the upper end of the groove in the vertical heat seal portion so as to protrude. 2. A self-supporting liquid packaging sachet according to claim 1. The said leg bottom part becomes a leg bottom part for self-supporting, when it folds up the part below a groove-shaped cut line in the thickness direction of a bag, and makes it a partition-like shape. A self-supporting liquid packaging sachet according to 1. The bag body is composed of a non-self-supporting flat bag made of a soft two-layer or three-layer laminated film, and at least a three-side sealed bag or a four-side sealed bag subjected to both a lateral heat seal and a vertical seal on both sides. The self-supporting liquid packaging sachet according to any one of claims 1 to 5.

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