JPH10152146A - Easy pouring self-supporting bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply a self-supporting bag capable of pouring a repacking liquid detergent by stable liquid flow without spilling the detergent. SOLUTION: In the head part of a self-supporting bag wherein a bottom part is opened in a convex lens cross-sectional shape, a pleated member TC folded into a W-shape is provided between opposed body part films to form a head rib 3 to the periphery of the head part and a protruding part 4 is formed so that a part of a central folded part becomes higher than the head part rib 3 and the leading end of the protruding part 4 is cut into appropriate length to form a pouring part F and a ventilation hole 8 is formed at the position separated from the pouring port F on the protruding part 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-standing bag in which the outflow of liquid is stable and easy to pour out.

[0002]

2. Description of the Related Art Refillable containers with self-standing bags are generally used mainly for products such as liquid detergents, softeners and bleaching agents. They are basically four-sided seal bags as shown in FIG.
A self-standing bag 2 having a V-shaped folded fold member (hereinafter referred to as a creaser) attached to the bottom thereof.
In many cases, the head is top sealed with the four-sided sealed bag, or a plastic outlet port member is attached to any corner of the head (not shown). Therefore, in these methods, a corner of the head is cut off, or a plastic molded spout is opened to pour out the internal solution. In contrast to these general ones, Japanese Utility Model Laid-Open No. 57-137139 proposes a self-standing bag having a sealed straw insertion hole which can be easily opened in a bottom creaser.

[0003]

However, a head sealed in a four-sided seal bag is low in cost because no separate member is used, and has a slightly flat bottom but a substantially flat state. Although there is an advantage that the liquid can be supplied to the user, as shown in FIG. 2, when one of the corners is cut with scissors or the like and the liquid is allowed to flow out, the periphery of the spout 14 is formed by a joint seal. There is only a straight body rib 12 and a head rib 13, and the periphery of the spout has a flexible structure, and the shape of the spout hole 14 tends to change depending on how the body 11 is held during pouring, and is not constant. . In addition, a small opening pulsates the liquid flow L,
One of the factors of the flexible structure is that a large opening has to be made. Therefore, it is difficult to control the liquid flow L from the self-standing bag in such a state to the intended position and to dispense the liquid L accurately, and there is a problem that the liquid is often spilled. It is known that such a problem can be solved by using a funnel, but the use of a funnel is troublesome even in the case where a motor oil can sold with a funnel has been replaced with a bottle that is easy to pour out, and today it is troublesome. She has disappeared from everyday life. Instead of cutting one corner, a spout with a cap is often installed diagonally.However, in addition to the cost of the member itself, the installation cost is added, which increases the cost. In addition, there is a problem that the cost of logistics rises and it becomes difficult to supply bags to the filling machine. 57-13713
No. 9 proposes the use of a straw as a prerequisite and does not have a pouring function, and has a problem that it must be inverted when used. The present invention has been made in view of the above-described problems, and allows a stable outflow of the internal solution without separately attaching a spout member, so that it is easy to pour into a target place, and the product delivery form is flat. The aim is to provide self-supporting bags that are logistically advantageous.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problem. In the present invention, the bottom of a self-supporting bag whose bottom is opened in a convex lens cross section is folded in a W-shape between opposed body films. A crimping member is attached to form a head rib around the head, and the center fold of the fold member makes a part of the center fold higher than the head rib. , A spout is formed at the tip of the protruding portion, and a vent is formed on the protruding portion at a position away from the spout.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the drawings. FIG. 1 is a perspective view of an easily pourable self-standing bag according to the present invention. As shown in FIG. 1, an easily pourable self-standing bag 10 according to the present invention is the same as a conventional self-standing bag in which a four-side seal bag is a basic type except for a head. That is, both sides of the two facing body films are vertically sealed to form a body rib 2, and the bottom is sealed with a V-folded bottom creaser BC therebetween, and the contents are filled. The bottom is opened in a convex lens cross-section to form a self-standing bag, and a W-folded top creaser TC, which will be described later, is also attached to the head by heat sealing. As shown in FIG. 1, the head extends as well as the bottom, and a protrusion 4 is formed substantially at the center of the head. The protruding portion 4 is a portion corresponding to a central folded portion of a top creaser TC described later. Both ends of the protruding portion 4 are obliquely sealed to a predetermined width to form a protruding portion rib 5. A cutout line 6 is obliquely printed on the upper end of the protruding portion 4. When the upper end is cut off along the cutout line 6 with scissors, a spout F as shown in FIG. 3 is formed.
Also, when processing the top creaser TC,
Along the way, the surface may be weakened by applying a half cut from the surface with a laser beam or the like, so that it can be cut off with a fingertip without using an instrument. Further, a uniaxially stretched film may be used as a raw material of the top creaser TC, and the tip of the protrusion 4 may be horizontally torn from a notch formed in the protrusion rib 5. In the protruding portion 4, a pull tab 7 is stuck at a position away from the spout F, and when the pull tab 7 is peeled off, the ventilation hole 8 can be formed.

FIG. 3 is an explanatory view of the use state of the easily pourable self-standing bag according to the present invention. As described in the previous section, according to the easily pourable self-standing bag 10 of the present invention in which the spout F is formed and the pull tab 7 is peeled off to form the vent hole 8, the opening of the spout F at the time of pouring is provided. The shape is stable, and the internal solution can be accurately poured out at a target position with a stable liquid flow L. That is, by providing the ventilation hole 7 separately, even if the spout F is small, there is no pulsating flow and a stable liquid flow can be obtained. The projecting ribs 5 provided on the portion 4 are further added to increase the rigidity of the entire self-standing bag, and in particular, the rigidity around the spout F is increased. This is because Further, in the easily pourable self-standing bag 10 according to the present invention, even if the liquid drips around the spout F, the liquid is transmitted along the outer wall of the protruding portion 4 and accumulates in the concave portion around the protruding portion 4. It does not fall down along the body 1 like 20 and does not stain the hands and floor.
The easily pourable self-supporting bag 10 according to the present invention is not limited to a usual liquid container, but can be cooked frozen food such as soup, curry roux and meat sauce, boil-heated retort food or the like in a packaging bag, or heated by a microwave oven. Or you can. In the latter case, in particular, the ventilation hole 8 plays a role of releasing heated steam, so there is no risk of rupture even if the internal pressure rises. Can be suitably used without spouting. In addition, depending on the food, heated or cooked food can be provided on the dining table together with the packaging bag. The easily pourable self-standing bag 10 according to the present invention may be arbitrarily determined depending on the contents, such as the length and width ratio of the self-standing bag, the degree of rigidity given to the entire self-standing bag, the diameter of the spout, and the like, and further improve the usability. As described above, one of the body ribs 2 may be expanded outward and a part thereof may be formed as a handle.

FIG. 4 is a diagram for explaining the processing of a self-supporting bag that can be easily poured according to the present invention. First, the process is the top creaser T
This is a pre-processing step of C. That is, the top creaser T
Along with the central fold line a in the flow direction of the film raw material used for C, a vent hole piece 8 'half-cut from the surface is provided, and a pull tab 7 is adhered thereon by heat sealing. The pull tab 7 is peelably weakly bonded around the vent hole piece 8 ′ and strongly adhered to the vent hole piece 8 ′. Also, the half cut needs to be punched out while leaving a part of the sealant layer on the back surface. Also, punch holes 9 are provided at a predetermined pitch on both sides of the film. This is because in the last step, heat sealing can be performed between the inner surfaces of the opposite body 1 films. Further, along the folding line a, a cutout line 6 is printed at the same time as other printed patterns and characters.

[0008] Next, as shown in the process, the original film is folded along the fold line a, and the fold line a is heat-sealed at a constant pitch into a triangular shape indicated by oblique lines. This triangular shape does not necessarily have to be an isosceles triangular shape as shown in FIG. 4, but may have a difference in length or gradient of the piece. Next, as shown in the process, the protrusion 4 having the protrusion rib 5 heat-sealed with a predetermined width in a diagonal direction is formed by partially punching the triangle.

Subsequently, in a process, the original film is folded along the folding lines b and c to complete a W-shaped top creaser TC. The degree of protrusion of the protrusion 4 is controlled by this folding. This top creaser T
In the last step, C is sandwiched between the two body film rolls together with the separately formed V-shaped bottom creaser BC (not shown), and the sides of the body film roll and both sides of the top creaser. The members are heat-sealed to form a head rib 3 and at the same time heat-sealed at a predetermined pitch and a predetermined sealing width also in a direction (vertical direction in FIG. 4) orthogonal to the flow of the body raw material. Is formed and cut off at a cutting line k in the middle of the seal width. However, in this heat sealing, a portion that is not heat-sealed is left on either side of the cutting line k so that the body rib 2 on either side is opened and the inner solution can be filled therefrom. Through the above steps, an easily pourable self-standing bag according to the present invention to which the top creaser TC is attached is obtained.

A self-standing bag 10 according to the present invention uses a laminated film having a heat sealant layer on the inner surface. The film specifications of the body 1, top cleaner TC and bottom cleaner BC are the same. The specifications may be used, or each may be changed. Top Creaser TC is W
It is preferable to use a slightly thinner one because of the folding. Examples of the laminated structure of the laminated film are as follows in order from the outside. 1) Body film: ON15 / DL / CPP20 / DL / PEF130 PET12 / DL / ON15 / DL / PEF80 ON15 / DL / PEF130 VMON15 / DL / PEF130 ON15 / DL / PVA12 / DL / PEF120 2) Creaser film: ON15 / DL / PEF50-90 VMON15 / DL / PEF50-90 ON15 / DL / LLDPEF50-90 Here, each symbol represents the following material, and the number represents μm. ON: stretched nylon PEF: polyethylene film OPP: stretched polypropylene PET: polyethylene terephthalate LLDPEF: linear low density polyethylene film DL: dry laminate adhesive layer VM: alumina or silica vapor deposition

[0011]

EXAMPLE An example of an easily pourable self-supporting bag 10 according to the present invention was prepared as a sample as a self-standing bag for refilling a liquid detergent with the following specifications. Contents: 500ml Flat self-standing bag dimensions: 120mm x 226mm Width of body and head ribs: 8mm Width of protruding ribs: 5mm Length and width of spout: 30mm, 36mm (at the time of extraction) Vent hole size: Composition of 2mmφ laminated film: Three types of laminated films are prepared for the body film, top creaser, and bottom creaser. An experimental sample consisting of: The dry laminate adhesive layer DL between each layer is omitted. Body film ON25 / LLDPE120 AL7 / ON20 / LLDPE100 PET12 / ON20 / LLDPE80 Top creaser ON20 / LLDPE80 AL7 / ON15 / LLDPE60 PET12 / ON15 / LLDPE60 Bottom creaser ON20 / LLDPE100 AL7 / ON15 / LLDPE80PET12PEON As a comparative example, a commercially available product in which a sample was filled with a liquid detergent and a conventional self-standing bag was used as a comparative example, and a comparative test of the difficulty of pouring was performed using a housewife of 10 households as a monitor. In this case, nine out of ten persons could transfer the liquid to the bottle without spilling the liquid, but in the comparative example, only four out of ten persons could. In addition, a pouring test was performed on a case where the vent hole 8 was not opened and the spout F was opened longer, but the liquid flow became thicker and a pulsating flow appeared, but it was still stable when compared with the comparative example. Was possible.

[0012]

According to the self-standing bag 10 of the present invention, the spout 4 is provided on the projection 4 provided on the head of the self-standing bag, and the rigidity of the entire self-standing bag, especially around the spout F, is improved. , The opening shape of the spout F is stabilized, and the liquid dripping at the time of pouring accumulates in the concave portion around the protruding portion 4, so that it is easy to pour the liquid into a target position with a stable liquid flow. In addition, it is extremely unlikely that liquid is spilled during pouring and soils hands and floor. Since the flat shape is maintained after bag making, distribution costs can be reduced and supply to the filling machine can be facilitated as compared with a self-standing bag with a spout member.

[Brief description of the drawings]

FIG. 1 is a perspective view of an easily pourable self-standing bag according to the present invention.

FIG. 2 is an explanatory view of a use state of a conventional self-standing bag.

FIG. 3 is an explanatory view of a use state of an easily pourable self-standing bag according to the present invention.

FIG. 4 is an explanatory view of processing of an easily pourable self-standing bag according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body part 2 Body part rib 3 Head rib 4 Projection part 5 Projection part rib 6 Cutting line 7 Pull tab 8 Vent hole 8 'Vent piece 9 Punched hole 10 Easy-to-pour self-standing bag according to the present invention 11 Body part 12 Body part Rib 13 Head rib 14 Outlet a to c Fold line k Cutting line F Inlet L Liquid flow BC Bottom cleaner TC Top cleaner

Claims (2)

[Claims] At the head of a self-standing bag, the bottom of which opens in a convex lens cross-section, a W-folded fold (folding) member is attached between opposed body films to form a head around the head. A rib is formed, and a protrusion is formed by the center fold of the folding member so that a part of the center fold is higher than the head rib, and a spout is formed at a tip of the protrusion. An easily pourable self-standing bag characterized by being formed. 2. An easily pourable self-standing bag according to claim 1, wherein a ventilation hole is formed on the projecting portion at a position away from the spout.