JP2008018991A - Outlet of flexible packaging bag - Google Patents

Abstract

[PROBLEMS] To reduce the amount of liquid container in a plastic bottle container of a flexible packaging bag that contains a seasoning for refilling, cosmetics, detergents, etc., and has no problems such as liquid leakage or self-sustainability. In addition, the formed spout 6 can be stably refilled, and the spout 6 that is formed is in close contact and hardly clogged.
The present invention relates to a flexible packaging bag made of a laminated resin film, in which a top side 2 is folded in two and left and right side sides 3, 4 and a bottom side 5 are thermally fused. The upper part of 3 is bent inward and heat-sealed, and the spout 6 is formed by cutting at the corners of the side 3 bent and heat-fused inward and the upper side 2 folded in half. It is a spout of the flexible packaging bag provided with the diagonal cut line a.
[Selection] Figure 2

Description

  The present invention relates to a spout in which a formed spout 6 is in close contact with and difficult to close, in a soft packaging bag containing a seasoning for refilling, cosmetics, detergents, and the like.

  Conventionally, an external resin film layer with excellent strength and various barrier properties that contains seasonings for refilling, cosmetics, detergents, etc., and an internal sealant layer with excellent heat fusion and sealing properties, etc. For example, as shown in FIG. 3, a continuous bottom portion of the bottom side 5 is folded inward and the peripheral portion is heat-sealed so that the upper side 2 and the left and right side sides 3, In a self-supporting soft packaging bag called a standing pouch, each of which is heat-sealed, and the upper part of the upper side 2 and the upper part of the left-hand side 3 are bent and heat-sealed. In general, a spout of a flexible packaging bag, which is provided with an oblique cut line a that is cut to form a spout 6 at the corners of the upper side 2 and the side 3 that are heat-sealed, is widely used.

  Conventionally, as shown in FIG. 4, the left side is made of a laminated resin film that contains a seasoning for refilling, cosmetics, detergents, and the like, and is similarly formed by laminating an outer surface resin film layer and an inner surface sealant layer. The side 3 is folded in half, and a bottom plate made of a laminated resin film, which is a separate leaf, is installed inside the bottom, and the periphery of the bottom 5 is heat-sealed to heat the top side 2 and the right side 4 respectively. In a self-supporting flexible packaging bag, also called a standing pouch, which is fused, the left side of the upper side 2 is bent inward and heat-sealed, and the heat-fused upper side 2 and the side folded in two A soft packaging bag spout (Patent Document 1) provided with a horizontal cut line a that cuts to form a spout 6 at a corner with the side 3 is disclosed and used.

The patent documents are as follows.
Japanese Patent Laid-Open No. 11-236053

However, with respect to the conventional spout of the flexible packaging bag shown in FIG. 3, the corners of the upper side 2 and the side side 3 of the diagonal cut line a are pinched with fingers, and oblique from the V-shaped notches b and b. The cut line a of FIG. 3B is strongly torn and cut to easily form the spout 6 shown in FIG. 3B, and the flexible packaging bag is turned over and stored in a plastic bottle container (not shown). Although it can refill liquid seasonings, cosmetics and detergents,
When the remaining amount of the liquid content decreases, both ends of the spout 6 provided at the corners of the upper side 2 and the side 3 which are thermally fused are thermally fused as shown in FIG. 3B. Since the inside of the soft packaging bag is depressurized even if it is slightly, the formed spout 6 is in close contact and easily closed. In addition to taking time to refill the plastic bottle container or the like, there is a risk of spilling from the bottle container or the like when the remaining liquid container is pushed out with fingers.

Further, for the conventional spout of the flexible packaging bag shown in FIG. 4, similarly, pinch the corners of the upper side 2 and the side 3 of the horizontal cut line a with a finger, and horizontally from the V-shaped notch b. The cut line a of FIG. 4B is strongly torn and cut to easily form the spout 6 shown in FIG. 4B, and the soft packaging bag is overturned and stored in a plastic bottle container (not shown). Liquid seasonings, cosmetics, detergents, etc. can be refilled, and unlike the aforementioned soft packaging bag spout shown in FIG. As shown in FIG. 4B, the left end of the spout 6 provided at the corner between the upper side 2 and the folded side side 3 is not flattened as shown in FIG. 4B. Because the laminated resin film at the left end is also repulsive, Hardly the spout 6 is closed by close contact, but is contained object liquid is running low a spout of flexible packaging bag can be replaced stably packed,
There is a problem in that the left side 3 is folded in half, a bottom plate made of a laminated resin film is attached inside the bottom, and the peripheral part of the bottom 5 is heat-sealed. After folding the plate 3 in half, the bottom plate made of a laminated resin film, which is a separate leaf, is folded inside the bottom part in the right-angle direction of the double fold, and then folded in the direction perpendicular to the left side 3 and attached. There is a slight gap between the bottom plate of the other leaf, and even if the periphery of the base 5 is firmly heat-sealed, there is a risk of liquid leakage due to poor heat-sealing. 3 is different from the flexible packaging bag shown in FIG. 3 in that the left-hand side 3 that is folded in half has rigidity and shape retention that are slightly inferior to those of the right-hand side 4 that has been heat-sealed. There is a problem with independence as a standing pouch on display and sale, such as It was.

  Therefore, the object of the present invention is to store liquids in a plastic bottle container or the like of a flexible packaging bag that contains a seasoning for refilling, cosmetics, detergents, etc., and has no problems such as liquid leakage or self-sustainability. An object of the present invention is to provide a spout that can be stably refilled even if the amount of the remaining material is reduced, and the spout 6 that is formed is in close contact and hardly clogged.

  The spout of the flexible packaging bag according to claim 1 of the present invention is made of a laminated resin film formed by folding the upper side 2 in half and heat-sealing the left and right side sides 3 and 4 and the bottom side 5 respectively. In the flexible packaging bag, as shown in FIGS. 1 and 2, the upper part of one side 3 (left side in FIGS. 1 and 2) is bent inward and heat-sealed, and then bent inward. A perforation 6 (see Example 2) or a semi-cut shape (see Example 1) is formed by forming a spout 6 by cutting at the corners of the heat-sealed side 3 and the folded upper side 2. ) Or the like, which is provided with an oblique cut line a.

In the spout of the flexible packaging bag of the present invention, the outer side is formed by folding the upper side 2 in half and heat-sealing the left and right side sides 3 and 4 and the bottom side 5 respectively, and has excellent strength and various barrier properties. In a soft packaging bag made of a laminated resin film in which a resin film layer and an inner surface sealant layer excellent in heat-fusibility and sealing properties are appropriately laminated, the upper part of one side 3 is bent inward. An oblique cut line a that cuts and forms the spout 6 is provided at the corners of the side 3 and the upper side 2 that are folded in two. By
The purchased customer pinches the corners of the side 3 and the upper side 2 of the diagonal cut line a with a finger, and tears off the diagonal cut line a and cuts it easily, as shown in FIGS. 1B and 2B. It is possible to refill the liquid seasoning, cosmetics, detergents, etc. contained in a plastic bottle container (not shown) by forming the spout 6 shown and tumbling the soft packaging bag. In addition, similar to the spout of the flexible packaging bag shown in FIG. 4 described above, the spout 6 provided at the corners of the heat-sealed side 3 and the folded upper side 2 is not particularly heat-sealed. The right end portion on the upper side 2 side is a double fold that is not easily flattened as shown in FIGS. 1B and 2B, and the laminated resin film at the right end portion also has a repulsive force, so the formed spout 6 is in close contact It is difficult to block and can be refilled stably even if there is little remaining liquid. It is possible to obtain a spout of flexible packaging bag.

  In particular, in the self-supporting flexible packaging bag of the present invention shown in FIG. 2, as shown in Example 2 described later, the upper side 2 is folded in half, and a bottom plate made of a separate laminated resin film is formed inside the bottom. Unlike the self-supporting soft packaging bag shown in FIG. 4 described above, the left and right side sides 3 and 4 are heat-sealed after being fitted and folded, and the periphery of the base 5 is heat-sealed. In addition, there is no risk of liquid leakage due to a slight gap between the bottom plate of the other leaf that is folded and attached and the peripheral part is heat-sealed and the left and right sides 3 and 4 that are heat-sealed. Also, it is possible to obtain a flexible packaging bag which does not have a risk of the right and left balances 3 and 4 of the heat-sealed sides 3 and 4 being out of balance and tilting, and which is free from problems such as liquid leakage and a standing pouch.

  The spout of the flexible packaging bag according to claim 2 of the present invention is the above-described spout of the soft packaging bag according to claim 1, wherein the side is bent inward and heat-sealed, and the upper side is folded in half. As shown in FIG. 1 and FIG. 2, a V-shaped notch b for starting cutting is provided on the side 3 of the heat-sealed side of the oblique cut line a provided at the corner with 2. It is a spout for a flexible packaging bag.

  In the spout of the flexible packaging bag of the present invention, the heat-sealed side of the oblique cut line a provided at the corners of the side 3 bent inward and heat-sealed and the upper side 2 folded in half By providing a V-shaped notch b for starting cutting on the side 3 side, the purchased customer pinches the corners of the side 3 and the upper side 2 of the oblique cut line a with fingers, The spout 6 shown in FIGS. 1B and 2B can be easily formed by strongly tearing and cutting the oblique cut line a from the fused V-shaped notch b on the side 3 side.

  The spout of the soft packaging bag according to claim 3 of the present invention is the side spout 3 bent inward and heat-sealed in the spout of the soft packaging bag according to claim 1 or claim 2 described above. A soft packaging bag provided with a halftone dot-shaped scratch processing c shown in FIG. 2C for facilitating cutting in the vicinity of an oblique cut line a provided at a corner of the upper side 2 folded in half. It is a spout.

  In the spout of the flexible packaging bag of the present invention, cutting is performed in the vicinity of the oblique cut line a provided at the corners of the side 3 bent and heat-sealed and the upper side 2 folded in half. By performing the dot-like scratch processing c for facilitating the purchase, the purchased customer pinches the corners of the side 3 and the top 2 of the diagonal cut line a with his finger, and the diagonal cut line a 1B, even if the cutting direction is going to bend when the edge is strongly torn, the adjacent halftone dot-shaped scratch processing c returns to the original cutting direction and easily cuts off the oblique cut line a. The spout 6 shown in FIG. 2B can be formed.

  As described above, at the spout of the flexible packaging bag of the present invention, the heat-sealed side of the flexible packaging bag that contains the seasoning for refilling, cosmetics, detergents, etc. and has no problems such as liquid leakage or self-supporting property Since the right end of the spout 6 provided at the corner between the side 3 and the upper side 2 folded in half, especially the upper side 2 side that is not heat-sealed, is a two-fold that is not easily flattened. It is possible to provide a spout that can be stably refilled even when the amount of liquid container is reduced in a plastic bottle container or the like that is difficult to close due to close contact with the outlet 6.

  In the outlet of the flexible packaging bag of the present invention, the oblique cut line a provided at the corner between the side 3 bent inward and heat-sealed and the upper side 2 folded in half has strength and various barrier properties. As shown in the examples to be described later, using a laminated resin film obtained by appropriately laminating an outer surface resin film layer excellent in heat resistance and an inner surface sealant layer excellent in heat sealability and the like. Before or during the bag filling process, with the usual carbon dioxide laser device or a metal punching blade, etc. The outer surface resin film layer having excellent strength and the like is cut (completely) at the position where the spout 6 is formed by cutting, and the inner surface sealant layer having excellent sealing properties and the like is reached (leaving). Slanted cut lines a such as perforations and semi-cut lines are provided without any particular restrictions It is possible.

  FIG. 1A is a plan view of a spout of a flexible packaging bag in Example 1 of the present invention, and FIG. 1B is a cross-sectional explanatory view of the spout 6.

The spout of the flexible packaging bag of Example 1 of the present invention has a nylon (Ny, 15 μm) outer surface resin film layer with excellent strength and stretched aluminum deposition (Al, 700 nm) with various barrier properties. Polyester (PET, 12μm) inner surface resin film layer and linear low density polyethylene (LLDPE, 100μm) inner surface sealant layer with excellent heat-fusability and sealability, etc., using normal dry laminating method and hot melt extrusion The vertical side and the horizontal side are 240 × 150 mm (of the housing part). In a soft packaging bag containing 350 ml of grilled meat seasoning, etc.
As shown in FIG. 1A, the upper portion of the left side 3 is bent inward and heat-sealed, and the side 3 that has been bent and heat-sealed inward and the upper side 2 folded in half (25 mm from each corner). The outer corner resin film layer is cut to form a spout 6 by cutting the outer corner resin film layer at a corner corner of the inner corner), and a half-cut diagonal cut line a reaching the inner resin film layer is provided. It is the spout of the flexible packaging bag which provided the V-shaped notch b which starts a cutting | disconnection at the side 3 side fused.

At the spout of the flexible packaging bag of this embodiment, the upper side 2 is folded in half, and the left and right side sides 3, 4 and the bottom side 5 are heat-sealed, respectively, and a normal three-side sealed soft packaging bag The upper side of the left side 3 is bent inward and heat-sealed, and the corner 3 between the side 3 that has been bent inward and heat-sealed and the upper side 2 folded in half is slanted in a half-cut shape. By providing a V-shaped notch b on the side 3 side of the heat-sealed line of the cut line a,
The purchased customer pinches the corner between the side 3 and the top 2 of the diagonal cut line a (the lower end is extended so that it is easy to pinch) with a finger, and V From the character cutout b, a semi-cut diagonal cut line a is strongly torn and cut to form the spout 6 shown in FIG. 1B, and the soft packaging bag is turned over. It is possible to refill the liquid grilled meat seasoning contained in a non-glass cooking container or the like, and the spout 6 provided at the corner of the heat-sealed side 3 and the folded upper side 2 In particular, since the right end portion on the upper side 2 side that is not heat-sealed is a double fold that does not easily become flat as shown in FIG. Get a spout for a soft packaging bag that can be refilled stably even if there is little dripping Theft could be.

As for the method for producing the flexible packaging bag of this example, the outer resin film layer of nylon (Ny, 15 μm) and the inner resin film of stretched polyester (PET, 12 μm) with aluminum deposition (Al, 700 nm), respectively. Bending inward using a laminated 480mm wide laminated resin film with a large number of flexible packaging bags continuous in the left-right direction, laminated with a layer and an inner sealant layer of linear low density polyethylene (LLDPE, 100μm) At the positions of the diagonal cut lines a provided at the corners of the side 3 that has been heat-sealed and the upper side 2 that has been folded in half, an ordinary carbon dioxide laser device is used to fold the upper side 2 into two After providing a half-cut diagonal cut line a that cuts the outer resin film layer and reaches the inner resin film layer, leaving a 3 mm long joint,
In the usual three-side seal type bag making and filling process, a winding-type laminated resin film provided with semi-cut diagonal cut lines a, a, a,... Folded in the direction of flow, the upper side 2, 2, 2, ..., the left side 3 and the straight right side 4 with the upper part bent inward are heat-sealed to a width of 8mm, respectively. While providing a V-shaped notch b connected to each half-cut oblique cut line a in the heat-sealed portion of the left side 3 bent to the inside with a normal metal punching blade, By cutting into individual soft packaging bags and accommodating the liquid yakiniku seasoning etc. from the bottom 5 that is not heat-sealed, and finally heat-sealing each bottom 5, efficiently, Many flexible packaging bags shown in FIG. 1A could be produced.

  FIG. 2A is a perspective plan view of a spout of a flexible packaging bag in Example 2 of the present invention, and FIGS. 2B and 2C are a cross-sectional explanatory view and a partially enlarged plan view of the spout 6.

The spout of the flexible packaging bag of Example 2 of the present invention has an outer resin film layer of nylon (Ny, 15 μm) with aluminum foil (Al, 9 μm), which has excellent strength, rigidity and various barrier properties, and heat fusion. Fold the upper side 2 in two, and fold the left and right sides of a laminated resin film made by laminating an internal sealant layer of linear low-density polyethylene (LLDPE, 100 μm) with excellent adhesion and sealing properties. Standing type pouch which is formed by heat-sealing the sides 3 and 4 and the base 5 and is called a standing pouch 240 × 140mm in length and width (length, width and bottom folds are 232 × 128 × 40mm) In a flexible packaging bag containing 430 ml of shampoo and rinse,
As shown in FIG. 2A, the upper part of the left side 3 is bent inward and heat-sealed, and the side 3 that has been bent and heat-sealed inside and the upper side 2 folded in half (30 mm from each corner). Cut at the corners to form the spout 6, cut the outer resin film layer to reach the inner sealant layer, and a cut-to-joint diagonal cut line with a ratio of 3: 1 2C, in which a V-shaped notch b for initiating cutting is provided on the side 3 of the heat-sealed side of the cut line a, and the cutting is facilitated in the vicinity of the cut line a. It is a spout of the soft packaging bag which gave the dot-like wound processing c of 3 mm width shown.

In the spout of the flexible packaging bag of this embodiment, the upper side 2 is folded in half, and the left and right side sides 3 and 4 and the bottom side 5 are respectively heat-sealed, and is a self-supporting type soft called a standing pouch. In the packaging bag, the upper part of the left side 3 is bent inward and heat-sealed, and the perforations are formed at the corners of the side 3 and the upper side 2 folded in two. Is provided with an oblique cut line a, a V-shaped notch b is provided on the side 3 of the cut line a which has been heat-sealed, and a dot-like scratch processing c is provided in the vicinity of the cut line a. By giving
The purchased customer pinches the corner between the side 3 and the top 2 of the diagonal cut line a (the lower end is extended so that it is easy to pinch) with a finger, and V Even when the cutting direction is to be bent when the perforated diagonal cut line a is strongly torn from the character notch b, the neighboring halftone dot-shaped flaw processing c returns to the original cutting direction and makes it easy to The cut line a is cut and cut to easily form the spout 6 shown in FIG. 2B, and the soft packaging bag is overturned and accommodated in a bottle container with a plastic pump (not shown). Liquid shampoo and rinse can be refilled, and, similarly to the spout of the soft packaging bag of Example 1 described above, it is provided at the corner of the heat-sealed side 3 and the folded upper side 2. The right end portion of the spout 6 that is not particularly heat-sealed on the upper side 2 side is shown in FIG. 2B. Since the formed spout 6 is in close contact with each other and is difficult to close, the spout of the soft packaging bag that can be refilled stably even if the contained liquid shampoo and rinse is low I was able to get it.

For the method of manufacturing the flexible packaging bag of this example, the outer resin film layer of nylon (Ny, 15 μm) with the aluminum foil (Al, 9 μm) and the linear low density polyethylene (LLDPE, 100 μm), respectively. Using a laminated resin film of a 480 mm wide shell plate and a 56 mm wide bottom plate, each of which is formed by winding a plurality of flexible packaging bags in the left-right direction, each laminated with an inner surface sealant layer, In the vicinity of each oblique cut line a provided at the corners of the side 3 of the laminated resin film bent inward and heat-sealed and the upper side 2 folded in half, with a normal carbon dioxide laser device, After performing a dot-like scratch processing c of 3 mm width,
In a self-supporting bag-making and filling process commonly referred to as a standing pouch, a wound-up laminated resin film having a plurality of dot-like scratches c, c, c,... Folded in the direction of the take-up and folded as the upper sides 2, 2, 2, ... inside the bottom of a number of the folded soft packaging bags, the 56mm width laminated resin film was folded and attached, After firmly bonding the periphery of the base 5 to a semicircular shape with a width of 8 mm, the left side 3 with the upper part bent inward and the straight right side 4 are heat-sealed to a width of 6 mm, respectively. Thus, unlike the self-supporting soft packaging bag shown in FIG. 4 described above, a large number of self-supporting continuous soft packaging bags having no problems such as liquid leakage and self-supporting properties are produced.
At the same time, with a normal metal punching blade, a 3 mm wide mesh in the vicinity of the oblique cut line a provided at the corner of the side 3 bent and heat-sealed and the upper side 2 folded in half. The ratio of the V-shaped notch b on the side 3 of the heat-sealed side and the cut and the connection connected to each V-shaped notch b is 3: 1 was cut into individual soft packaging bags while cutting the outer resin film layer and forming perforated diagonal cut lines a reaching the inner sealant layer, and the upper side 2 folded in half was cut open. A large number of flexible packaging bags shown in FIG. 2A can be efficiently manufactured by heat-sealing the periphery of each filling port d while storing liquid shampoo and rinse from the filling port d. It was.

  Nothing in particular.

1A in Example 1 of this invention is a top view of the spout of a flexible packaging bag, FIG. 1B is sectional explanatory drawing of the spout 6. FIG. 2A in Example 2 of the present invention is a perspective plan view of a spout of a flexible packaging bag, and FIGS. 2B and 2C are a cross-sectional explanatory view and a partially enlarged plan view of the spout 6. FIG. 3A is a perspective plan view of a spout of a conventional flexible packaging bag, and FIG. 3B is a cross-sectional explanatory view of the spout 6. 4A is a perspective plan view of a spout of a conventional soft packaging bag, and FIG. 4B is a cross-sectional explanatory view of the spout 6 thereof.

Explanation of symbols

2 ... Upper side 3, 4 ... Side 5 ... Bottom 6 ... Spout a ... Cut line b ... V-shaped notch c ... Halftone dot processing d ... Filling port

Claims (3)

  In the flexible packaging bag made of a laminated resin film, the upper side 2 is folded in half and the left and right side sides 3 and 4 and the bottom side 5 are heat-sealed, and the upper part of one side 3 is bent inward. An oblique cut line a that cuts and forms the spout 6 is provided at the corners of the side 3 and the upper side 2 that are folded in two. A spout for a flexible packaging bag, characterized by that.   The spout of the flexible packaging bag according to claim 1, wherein the heat sealing of the oblique cut line a is provided at the corners of the side 3 bent inward and heat-sealed and the upper side 2 folded in half. A spout for a flexible packaging bag, which is provided with a V-shaped notch b for starting cutting on the side 3 side.   In the spout of the flexible packaging bag according to claim 1 or 2, an oblique cut line a provided at a corner portion of the side 3 bent inward and heat-sealed and the upper side 2 folded in half A spout for a flexible packaging bag, which is provided with a dot-like flaw processing c that facilitates cutting in the vicinity of.

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