JPH11314644A - Simple self-supporting bag with faucet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve an inconvenience caused by lack of blance of the gravity center of a bag body. SOLUTION: When a bag content is filled to form the bag body 1A as a three-dimensional shape, the intersection 20 part of a side seal vertical part 18 and a first side seal inclined part 19 (or a slant seal part for a faucet-cum- first side seal inclined part) and the intersection 20 part of the part 18 and a second side seal inclined part 23 are forcibly folded and further, a constricting part 12 and the side seal vertical part 18 are inwardly pushed and hence, recesses 13 are forcedly formed at both right and left side seal parts 3 of the three-dimensional bag body 1A. Since the recesses are forcedly formed at specified positions, the self-supporting stability of the bag body 1A is increased. Hence, there is no fear that the recesses are greatly bent or folded to form a so-called gooseneck shape and a large deflection or bent arises to impair a commercial value. In this way, an inconvenience caused by lack of balance of the gravity center of the bag body 1A can be solved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a single layer material of a flexible resin film or a flexible laminated material obtained by laminating various types of resin films on the resin film. This is a simple self-standing bag with a plug with a screw cap (screw cap) that is self-supporting and has a screw cap (screw cap) at the corner, and in particular, a port that can eliminate problems due to uneven balance of the center of gravity of the bag body. The present invention relates to a simple self-standing bag with a stopper. In addition, in this specification, the simple self-supporting bag with a stopper and the bag main body are substantially synonymous words.

[0002]

2. Description of the Related Art A conventional simple self-standing bag with a plug will be described below with reference to FIGS. In the figure, A
Is a bag body made of a resin film of polyethylene, polypropylene, nylon or the like, that is, a conventional simple self-supporting bag with a plug. This bag body A is usually provided in FIGS.
As shown in (A), it is in a state of being folded into a planar shape and contains contents (for example, drinks and liquid foods, liquids such as vegetable oils, soy sauces and liquid detergents, powders such as flour and powdered soap, and granular materials such as rice). When filled with a body, a semi-liquid such as paint or an adhesive, hereinafter simply referred to as contents, it is formed into a three-dimensional shape as shown in FIGS. 6 and 7B.

As shown in FIG. 7A, a substantially central portion of a single flexible film is folded into a W-shape to form a front portion (front side in the drawing) 100 of the bag body A.
And an inverted V-shaped bottom portion 102 and a back portion 101. Alternatively, this bag body A is shown in FIG.
As shown in (A), one sheet of the flexible film is also placed between the lower end of the front side part (front side in the drawing) 100 and the lower end of the back part 101 of the same flexible film. Both lower ends of a bottom portion 102 formed by bending a flexible film into an inverted V-shape are connected.

The above-mentioned bag body A has a mouth portion having an upper edge opened (a seal margin 10 for sealing to seal an upper edge opening described later), and a machine for filling the bag body A with contents. A portion (including a chuck allowance for chucking by a not-shown portion) 1, a W bottom portion 2 whose lower edge portion is formed in a W shape,
Both left and right sides from the W bottom 2 to the mouth 1 (between the front side portion 100 and the back side portion 101, the front side portion 100
And the bottom part 102, the back part 101 and the bottom part 1
02), a lower edge sealing portion 6 in which a lower edge of the W bottom 2 is sealed, and a single mountain fold line 7 of the W bottom 2. Two valley bending lines of the W bottom 2 from the intersection of both ends of the bottom seal 2 with the side seal 3 (the inner edge of the lower edge seal 6)
8, the left and right W-bottom seal portions 9, which are sealed diagonally, one end of the mouth portion 1 (left end portion in the drawing), and the upper edge of the one (left side in the drawing) side seal portion 3 Oblique seal portion 4 for a plug, in which a corner (a left corner in the drawing) surrounded by the cut portion is cut obliquely and the cut edge of the cut is sealed, and the oblique seal for the plug And a plug 40 provided on the part 4 and usually has a planar shape.

[0005] Hereinafter, a process of installing the plug 40 will be described. First, each of the seal portions 3, 4, 6, and 9 is sealed to form the bag body A except for the unsealed portion having the width C in the plug oblique seal portion 4, and then the plug oblique seal portion 4 is formed. By setting the plug 40 in the unsealed portion C of the above and sealingly fixing the unsealed portion C and the plug 40, the plug 40 is mounted on the oblique seal portion 4 for the plug. Alternatively, the seal portions 3, 6, 9 are sealed to form the bag body A while leaving the entire width of the plug oblique seal portion 4, and then the plug oblique seal portion 4 is formed.
By setting the plug 40 in the unsealed portion of the full width of the above, and by sealing and fixing the unsealed portion of the full width and the plug 40,
The plug 40 is provided on the plug oblique seal portion 4.

[0006] The contents are filled from the mouth 1 into the bag body A which is folded into the above-mentioned normal planar shape. Then, since the bag body A is made of a flexible material,
The bag body A having the planar shape is formed in a three-dimensional shape. That is, as shown in FIGS. 6 and 7B, the central portion of the front side portion 100 and the back side portion 101 of the bag body A swells back and forth, and the left and right side seal portions 3 and the front side portion 100
And the left and right sides of the back side portion 101 are drawn left and right (in a direction substantially perpendicular to the swelling direction of the central portion of the front side portion 100 and the back side portion 101 described above), and the W bottom 2 has a bottom. Is formed, and the bag body A having a planar shape is formed into a three-dimensional shape. At this time, the bottom (bottom side portion 102) of the W bottom 2 has a substantially square or rectangular shape, and a substantially upper half of the trunk 5 formed from the mouth 1 to the valley bending line 8 of the W bottom 2 is formed. It has a roof shape, and the lower half of the trunk 5 has a substantially rectangular parallelepiped shape. Then, after filling the contents, the front side portion 100 and the back side portion 101 of the upper edge opening of the mouth 1 are sealed, and the screw cap 41 is removably screwed into the plug 40 to thereby remove the contents. Can be sealed.

Next, at the time of use, the contents can be poured out of the bag body A via the plug 40 by unscrewing the screw lid 41 from the plug 40 and removing it. Further, by screwing the screw lid 41 back into the plug 40, the contents can be resealed. And since the above-mentioned simple self-standing bag with a stopper is made of a flexible material, it can be folded and discarded in a substantially planar shape after use, so that it can be compared with other containers such as blow-molded blow bottles and bottles. It is not bulky, can reduce the volume of waste, and is easy to dispose of, and is widely used. Moreover, since the above-mentioned simple self-supporting bag with a spout is provided with the spout 40 at the corner of the mouth 1, it is compared with the simple self-standing bag with the spout provided at the center of the spout. , Faucet 40
The contents can be poured out of the bag body A very easily.

[0008]

However, since the above-mentioned simple self-standing bag with a plug has the plug 40 provided at the corner of the mouth portion 1, there is a problem due to an uneven balance of the center of gravity of the bag body A. Occurs. That is, as shown in FIG. 6, in the upper part of the body 5 of the bag body A, since the uniformity of the balance of the right and left centers of gravity is lost, the concave portion 1 generated in the side seal portion 3 is formed.
The position of 1 is different. For example, as shown in FIG. 6, in the side seal portion 3 on the plug 40 side (left side in the drawing), a concave portion 11 is formed at a position below the plug oblique seal portion 4, and the opposite side to the plug 40 (in the drawing). In the side seal portion 3 (right side), the concave portion 11 is formed at a position lower than the concave portion 11 on the left side. Depending on the position of the concave portion 11, the bag body A lacks self-standing stability and is difficult to use, and the effect that the contents can be very easily poured out of the bag body A through the spout 40 is reduced by half. Would. In addition, if the positions of the concave portions 11 are different, the concave portions 11 may be bent or bent greatly, resulting in a so-called waist-folded state, and large distortion or bending may occur, thereby lowering the commercial value.

SUMMARY OF THE INVENTION An object of the present invention is to provide a simple self-standing bag with a plug which can solve the problem caused by the uneven balance of the center of gravity of the bag body.

[0010]

According to a first aspect of the present invention, a narrowing portion is provided on both left and right side seal portions by narrowing inward, and the left and right side seal portions are connected to the narrowing portion. The side seal vertical portion is provided from the intersection with the upper end of the portion toward the mouth portion side, and the first side seal inclined portion is directed inward from the upper end of the plug side side seal vertical portion toward the mouth portion. A part of the first side seal inclined part is provided with an auxiliary seal part between the halfway end of the first side seal inclined part and the oblique seal part for the plug, inclining at an inclination angle different from the inclination angle of the part.
From the upper end of the side seal vertical portion on the opposite side of the plug, a second side seal inclined portion is provided inclining inward toward the mouth portion and provided halfway, and a midway end of the second side seal inclined portion and the side seal portion are provided. An auxiliary side seal inclined portion is provided substantially parallel to the plug oblique seal portion therebetween.

Further, the invention according to claim 2 (hereinafter referred to as "second
In this case, the right and left side seal portions are narrowed inwardly, and the side seal vertical portion is provided from the intersection of the left and right side seal portions and the upper end of the narrow portion toward the mouth portion. From the upper end of the side seal vertical portion on the plug side, a first side seal inclined portion also serving as a diagonal seal portion for a plug is provided inside to the mouth portion, and the second side seal is formed from the upper end of the side seal vertical portion on the opposite side to the plug. The inclined portion is inclined inward toward the mouth portion and is provided halfway, and an auxiliary side seal inclined portion is provided between the middle end of the second side seal inclined portion and the side seal portion as the oblique seal portion for the plug and the first. It is characterized by being provided substantially parallel to the side seal inclined portion.

As a result, the simple self-supporting bag with a plug according to the present invention has the above-described structure, and is used when the content is filled to form a three-dimensional simple self-supporting bag with a plug, that is, when the front side portion and the back side portion are formed. When the central portion expands back and forth, and when the left and right side seal portions and the left and right side portions of the front side portion and the back side portion are pulled in left and right, the side seal vertical portion and the first side seal inclined portion (or the oblique seal for the plug) A simple self-standing bag with a three-dimensional spout, with the intersection between the first part and the first side seal inclined part) and the second side seal inclined part being forcibly bent, and the narrowed part and the side seal vertical part penetrating inside. The recesses are forcibly formed in the left and right side seal portions of the. Since the concave portion is forcibly formed at a predetermined position (a position corresponding to the narrowed portion and the vertical portion of the side seal), the self-standing stability of the bag body is increased, and the concave portion is largely bent or broken, so-called. There is no danger that the product will be degraded due to the occurrence of a severe distortion or bending due to the state of being bent. That is, even with a simple self-standing bag with a plug provided with a plug at the corner of the mouth portion, it is possible to solve the problem caused by the uneven balance of the center of gravity of the bag body.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a simple self-standing bag with a plug of the first invention and an embodiment of a simple self-standing bag with a plug of the second invention will be described below with reference to FIGS. explain. 1 and 2 show an embodiment of a simple self-standing bag with a plug according to the first invention. In the drawings, the same reference numerals as those in FIGS. 5 to 7 denote the same components. In the figure, 1A is a bag body. The bag body 1A is made of a flexible film made of a front side portion 100, a back side portion 101, and an inverted V-shaped bottom portion 102 between the front side portion 100 and the back side portion 101. The bag body 1A includes a mouth portion 1 having an open upper edge, a W bottom portion 2 having a lower edge portion formed in a W shape, and both left and right sides from the mouth portion 1 to the W bottom portion 2. , Front side portion 100, back side portion 101, and front side portion 1
00 and the bottom portion 102, and the back side portion 101 and the bottom portion 102 are each sealed with a side seal portion 3.
And

In the drawing, reference numeral 12 denotes a throttle portion provided in a substantially intermediate portion of the left and right side seal portions 3 so as to be narrowed inward.
When the bag body 1A is three-dimensionally formed by filling the contents, the narrowed portion 12 cuts into the inside, and the left and right side seal portions 3 of the three-dimensional bag body 1A are substantially laterally V-shaped.
This is for forming the U-shaped recess 13. The narrowed portion 12 is located at the upper end point 14 of the left and right side seal portions 3.
And a first intermediate point 1 between the front side portion 100 and the back side portion 101
It has a trapezoidal or quadrangular shape connecting the four points of the fifth and second intermediate points 16 and the lower end point 17 of the left and right side seal portions 3. The aperture section 12 may have a triangular shape connecting three points, an upper end point, one intermediate point, and a lower end point.

In the drawing, reference numeral 18 denotes a side seal vertical portion. The side seal vertical portions 18 are the right and left side seal portions 3, and are provided substantially perpendicularly from the intersection of the upper end 14 of the narrowed portion 12 and the right and left side seal portions 3 toward the mouth 1 side. Become.

In the figure, reference numeral 19 denotes a first side seal inclined portion. The first side seal inclined portion 19 has an inclination angle different from the inclination angle of the plug oblique seal portion 4 inward from the upper end 20 of the side seal vertical portion 18 on the plug 40 side toward the mouth portion 1. It is provided halfway inclining. An auxiliary seal portion 22 is provided between the middle end 21 of the first side seal inclined portion 19 and the plug oblique seal portion 4. The auxiliary seal portion 22 is for securing an unsealed portion C in the plug oblique seal portion 4.

Reference numeral 23 denotes a second side seal inclined portion.
The second side seal inclined portion 23 is provided halfway inward from the upper end 20 of the side seal vertical portion 18 opposite to the plug 40 toward the mouth portion 1. Between the middle end 24 of the second side seal inclined portion 23 and the side seal portion 3, an auxiliary side seal inclined portion 25 is provided substantially in parallel with the plug oblique seal portion 4. The auxiliary side seal inclined portion 25 secures an opening of the mouth portion 1 when filling the contents into the bag body 1A.

The above-mentioned first side seal inclined portion 19
And an extension line inside the second side seal inclined portion 23 (FIG. 1).
The middle two-dot chain line) intersects a point 26 which is about one-fourth of the width B (about 180 mm in this example) of the bag body 1A from the inside of the left and right side seal parts 3 in the mouth 1. . In addition, the above-described constricted portion 12, side seal vertical portion 18, first side seal inclined portion 19, auxiliary seal portion 22, second side seal inclined portion 23, and auxiliary side seal inclined portion 25 include a front side portion 100 and a back side portion 101. Are fixed by heat welding or bonding.

Since the simple self-supporting bag with a plug according to the present invention in this embodiment has the above-described structure, the bag body 1
A when filling the contents into A to form a simple self-supporting bag with a stopper three-dimensionally, ie, the front side portion 100 and the back side portion 1
01 swells forward and backward, and the left and right side seal portions 3 and the left and right side portions of the front side portion 100 and the back side portion 101 are left and right (the above-described front side portion 100 and back side portion 1).
01 (in a direction substantially perpendicular to the bulging direction of the central portion of the front seal 01).
8 is forcibly bent at the intersection of the first side seal inclined portion 19 and the second side seal inclined portion 23, and the narrowed portion 12 and the side seal vertical portion 18 bite into the inside to provide a three-dimensional plug. The recesses 13 are forcibly formed in the left and right side seal portions 3 of the simple self-standing bag. This recess 1
3 is a predetermined position (a throttle unit 12 and a side seal vertical unit 1)
(Corresponding to position 8), the self-standing stability of the bag body 1A increases, and the concave portion 13 bends or breaks greatly, resulting in a so-called waist-folded state, and large distortion and bending are caused. There is no danger that the commercial value will be reduced due to the occurrence.
That is, even if the plug 40 is a simple self-standing bag with a plug provided at the corner of the mouth 1, it is possible to solve the problem caused by the uneven balance of the center of gravity of the bag body 1 </ b> A.

In use, the part surrounded by the side seal portion 3, the second side seal inclined portion 23, and the auxiliary side seal inclined portion 27 on the side opposite to the plug 40 is the handle 2.
7 can be used.

Further, on the side opposite to the plug 40, a second
Since the auxiliary side seal inclined portion 25 is provided between the middle end 24 of the side seal inclined portion 23 and the side seal portion 3 substantially in parallel with the plug oblique seal portion 4, the bag body 1A
When the contents are filled in, the mouth 1 is opened on the side opposite to the plug 40, and the opening width of the mouth 1 is about three quarters of the width B of the bag body 1A. An opening at the time of filling is sufficiently obtained.

FIGS. 3 and 4 show an embodiment of a simple self-standing bag with a plug according to the second invention. In the drawing, the same reference numerals as those in FIGS. 1 and 2 and FIGS. 5 to 7 indicate the same components. In the figure,
Reference numeral 28 denotes a plug oblique seal portion and a first side seal inclined portion. This plug oblique seal portion and first side seal inclined portion 2
8 is about 1/4 of the width B of the bag body 1A from the inside of the side seal portion 3 on the plug 40 side of the mouth portion 1 from the upper end of the side seal vertical portion 18 on the plug 40 side. Point 26
Between the two. A plug 40 is provided on the oblique seal portion for the plug and the first side seal inclined portion 28. This second
The simple self-supporting bag with a plug of the invention can achieve the same operation and effect as the simple self-standing bag with a plug of the first invention described above.

[0023]

As is apparent from the above description, the simple self-standing bag with a plug according to the present invention can eliminate the problem caused by the uneven balance of the center of gravity of the bag body.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a simple self-standing bag with a plug according to the first invention, which is folded in a planar shape.

FIG. 2 is a front view of a state in which contents are filled and sealed in a bag body.

FIG. 3 is a front view of the simple self-standing bag with a plug according to the second embodiment of the present invention, which is folded into a planar shape.

FIG. 4 is a front view of a state in which contents are filled and sealed in a bag body.

FIG. 5 is a front view showing a conventional self-contained self-supporting bag with a plug, which is folded in a planar shape.

6 is a front view of a state in which the contents of the bag body shown in FIG. 5 are filled and sealed.

FIG. 7A is a schematic cross-sectional view showing each part in a state of being folded into a plane shape, and FIG. 7B is a schematic cross-sectional view showing each part in a state in which contents are filled and sealed in a bag body. is there.

[Explanation of symbols]

1A: bag body, 1: mouth, 2 ... W bottom, 3 ... side seal, 4 ... oblique seal for plug, 5 ... trunk, 6 ... lower edge seal, 7 ... mountain bending line, 8 ... Valley bending line, 9 ... W
Bottom seal part, 10 ... seal fee, 12 ... throttle part, 13 ...
Recessed part, 14 ... upper end point, 15 ... first intermediate point, 16 ... second intermediate point, 17 ... lower end point, 18 ... side seal vertical part, 19
... First side seal inclined portion, 20. Intersection between the side seal vertical portion and the first side seal inclined portion, second side seal inclined portion, 21 .. Intermediate end of the first side seal inclined portion, 22.
... Auxiliary seal part, 23 ... Second side seal inclined part, 24
... midway end of the second side seal inclined part, 25 ... auxiliary side seal inclined part, 26 ... intersection of the mouth 1 with the first side seal inclined part, extension of the second side seal inclined part, 27 ...
Handle, 28: oblique seal portion for plug and first side seal inclined portion, A: unsealed portion of oblique seal portion for plug, oblique seal portion for plug and first side seal inclined portion, B: bag body Width.

Claims (2)

[Claims] 1. A simple self-supporting bag with a stopper made of a flexible film, comprising a front side portion, a back side portion, and an inverted V-shaped bottom portion between the front side portion and the back side portion. A mouth portion having an open upper edge, a W bottom portion having a lower edge portion formed in a W shape, a side seal portion in which both right and left sides from the mouth portion to the W bottom portion are sealed, An oblique seal portion for a plug, wherein a corner surrounded by one end of the portion and an upper edge portion of the one side seal portion is obliquely cut off, and the cut off oblique edge is sealed; A plug provided on the plug oblique seal portion, and by filling contents from the mouth portion, a bottom is formed at the W bottom portion, and the front side portion, the back side portion, and the bottom side. The part is formed three-dimensionally, and the front side part and the back side part of the mouth part In a simple self-supporting bag with a stopper that is sealed and used with a screw cap detachably screwed into the stopper, a narrowing portion provided by squeezing the left and right side seal portions inward, and filling the contents. When a simple self-standing bag with a spout is formed three-dimensionally, the narrowed portion cuts into the inside and a narrowed portion for forming a concave portion on both left and right side seal portions of the three-dimensional simple self-standing bag with a spout, The left and right side seal portions, wherein a side seal vertical portion provided toward an opening portion from an intersection of an upper end of the throttle portion and the left and right side seal portions; and the side seal vertical portion on the plug side. A first side seal inclined portion which is provided halfway from the upper end toward the mouth portion at an inclination angle different from the inclination angle of the oblique seal portion for the plug, and the first side seal inclined portion. Midway end and oblique for the plug An auxiliary seal portion provided between the side seal vertical portion and a second side seal inclined portion provided inclining inward from an upper end of the side seal vertical portion on the side opposite to the plug toward the mouth portion and extending halfway. And an auxiliary side seal inclined portion provided substantially in parallel with the plug oblique seal portion between a middle end of the second side seal inclined portion and the side seal portion. Simple self-standing bag with stopper. 2. A simple self-standing bag with a spout made of a flexible film, comprising a front side portion, a back side portion, and an inverted V-shaped bottom portion between the front side portion and the back side portion. A mouth portion having an open upper edge, a W bottom portion having a lower edge portion formed in a W shape, a side seal portion in which both right and left sides from the mouth portion to the W bottom portion are sealed, An oblique seal portion for a plug, wherein a corner surrounded by one end of the portion and an upper edge portion of the one side seal portion is obliquely cut off, and the cut off oblique edge is sealed; A plug provided on the plug oblique seal portion, and by filling contents from the mouth portion, a bottom is formed at the W bottom portion, and the front side portion, the back side portion, and the bottom side. The part is formed three-dimensionally, and the front side part and the back side part of the mouth part In a simple self-supporting bag with a stopper that is sealed and used with a screw cap detachably screwed into the stopper, a narrowing portion provided by squeezing the left and right side seal portions inward, and filling the contents. When a simple self-standing bag with a spout is formed three-dimensionally, the narrowed portion cuts into the inside and a narrowed portion for forming a concave portion on both left and right side seal portions of the three-dimensional simple self-standing bag with a spout, The left and right side seal portions, wherein a side seal vertical portion provided toward an opening portion from an intersection of an upper end of the throttle portion and the left and right side seal portions; and the side seal vertical portion on the plug side. A first side seal inclined portion also serving as the plug oblique seal portion provided from the upper end to the mouth portion inside, from the upper end of the side seal vertical portion on the side opposite to the plug toward the mouth portion; Tilting inward halfway A second side seal inclined portion, and an auxiliary side provided substantially parallel to the plug oblique seal portion and the first side seal inclined portion between the middle end of the second side seal inclined portion and the side seal portion. A simple self-standing bag with a plug, comprising: a seal inclined portion;