JP2017061337A - Bag body with zipper tape - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag body with a zipper tape which prevents careless opening.SOLUTION: A bent part 21C is provided at a base end of an engaging part 23 on an opening 18 side in a width direction of a male belt-like stem 21A, and the opening 18 side of the width direction of the male belt-like stem 21A and a female belt-like stem 22A is heat-sealed onto an inner face of a bag body 10. In a usual opening in which an edge of the opening 18 of the bag body 10 is grasped and is so opened as to widen the opening 18, the male belt-like stem 21A is bent at a position of the bent part 21C, a pulling force acts in a direction in which the male belt-like stem 21A and the female belt-like stem 22A are sheared, and a first male claw 21B1 and a first female claw 22B1 are strongly engaged with each other, whereby engagement of the engaging part 23 can be prevented from being released.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a bag body with a zipper tape.

In recent years, a bag body with a zipper tape that can be resealed after opening a bag body that stores an object to be packaged has been widely used. As such a bag body with a zipper tape, the structure which has the knob | pick which assists opening is known (for example, refer patent document 1).
The bag body with a zipper tape described in Patent Document 1 includes a bag body having a storage space for storing an object to be packaged, and an opening that can be engaged and disengaged inside the opened opening edge of the bag body. A zipper tape for resealing is provided. And on the outer surface of the bag body, there is provided an opening assist knob provided in the shape of a tongue piece in the vicinity of the opening edge. And the structure which the engagement of a zipper tape is cancelled | released and a bag main body is opened is taken by pulling an opening edge with this opening assistance knob.

JP 2011-140326 A

By the way, depending on the contents of the package, it is preferable to store it in a place out of the reach of infants and children. However, it may be accidentally touched by infants and children. In the configuration provided with the conventional opening assist knob that facilitates opening, there is an inconvenience that even an infant or child can easily open.
An object of this invention is to provide the bag body with a zipper tape which prevents unintentional opening.

  A bag body with a zipper tape of the present invention comprises a bag body having a storage space capable of storing an object to be packaged, and a zipper tape joined to an inner surface of the bag body, and the zipper tape is a pair of males. A belt-like shape having an engagement portion with which the side flange portion and the female side flange portion can be engaged with each other, and a pair of band-like base portions respectively connected to the engagement portion, and having the male side flange portion or the female side flange portion. One of the base portions is provided with a bent portion at a base end of the engaging portion on the side opposite to the storage space in the width direction of the belt-shaped base portion, and the pair of belt-shaped base portions are respectively formed on the bag body. It is characterized by being joined to.

In the present invention, in a normal opening method in which the opening of the bag main body is picked by opening the edge to widen the opening, the band-shaped base is bent at the position of the bent portion, so a pair of band-shaped along the pair of band-shaped bases An opening force acts in a direction in which the base is sheared, and the male side collar and the female side collar are strongly engaged to suppress the opening.
On the other hand, for example, the outer surface of the bag body provided with the band-shaped base portion provided with no bent portion (the storage space side from the band-shaped base portion) and the edge of the opening portion of the bag main body provided with the band-shaped base portion provided with the bent portion When it is picked and pulled to widen the bag body, or when it is slid with a finger in the direction separating the storage space side and the opening side from the band base from the band base on the outer surface of the bag body, a pair of band bases The opening force acts so as to release the engagement between the male side collar part and the female side collar part, and it can be easily opened.
Therefore, a special opening operation is required for opening, and erroneous opening can be prevented.

Here, as the bag body, for example, a structure manufactured by bending a single film, a structure manufactured by overlapping two films, or a gusset on the side surface using two or more films Various forms such as gusset bags and standing bags can be applied.
And as joining with the bag main body of a strip | belt-shaped base part, the various methods of attaching a strip | belt-shaped base part to a bag main body other than heat sealing, adhesion | attachment using an ultrasonic wave, etc. can be utilized.
In addition, as the bent portion, for example, it is thinner than other portions, missing, perforations that are so-called perforations in which holes are connected in a broken line shape, members in which concave portions are connected in a broken line shape, and other members that are softer than other portions The belt-like base portion is easily bent at the portion, such as a bellows shape.

In the present invention, the belt-like base portion provided with the bent portion may be configured such that the storage space side is further joined to the bag body from the position where the engaging portion is provided in the width direction. it can.
In the present invention, for example, if a large opening force is applied to open the opening and forcefully open the edge, a large opening force acts on the bent portion. For this reason, a bent part is cut | disconnected by big opening force, and the opened trace can be easily understood.

Moreover, in this invention, the said bending part can also be set as the structure formed thinner than the thickness of the strip | belt-shaped base part in which the said bending part was provided.
In this invention, the structure which bends in the position of a bending part by the simple structure which makes a bending part thin is obtained.

Furthermore, in this invention, the said bending part can also be set as the structure spaced apart from the inner surface of the said bag main body.
In this invention, since the bent portion is separated from the inner surface of the bag main body, there is a gap portion where the zipper tape is not fused along the inner surface of the bag main body. It becomes easy to bend, and the bent portion is bent at the same time. Therefore, it is possible to bend the bag body with a smaller force at the position of the bent portion.

Moreover, in this invention, the said bending part can also be set as the structure which is a several hole or recessed part which continues in a broken line shape.
In this invention, the structure which bends in the position of a bending part is obtained with the simple structure which makes a bending part the some hole or recessed part which continues in a broken line shape.

And in this invention, the said bending part can also be set as the structure provided in the strip | belt-shaped base part in which the said male side collar part was provided.
Here, when the bent portion is provided in the belt-like base portion provided with the female side collar portion, a shearing force acts on the opposite side to the case where it is provided on the belt-like base portion provided with the male side collar portion. For this reason, in order to be able to open it, it is necessary to reduce the hook of a 1st male side nail | claw. If it does so, since it will become weak with respect to an internal pressure, it is preferable to provide a bending part in the male side.

Further, in the present invention, the male side collar has a first male side claw protruding to the storage space side and a second male side claw protruding to the side opposite to the first male side claw. The female side collar includes a first female claw that can be engaged with the first male claw and a second female claw that can be engaged with the second male claw, The male side claw has a slope facing the band-shaped base provided with the male side collar, and an angle α formed between the tangent to the slope and the perpendicular of the band-shaped base provided with the male side collar The second male claw is formed at an angle smaller than 90 °, and the second male claw has a slope facing the belt-like base provided with the male collar, and the tangent to the slope and the male collar are provided. Alternatively, the angle β formed with the perpendicular of the band-shaped base portion may be formed at an angle larger than 90 °.
In this invention, the 1st male side nail | claw which protrudes in the storage space side shall protrude in cross-sectional shape, and the 2nd male side nail | claw which protrudes in the opposite side to a 1st male side nail shall be the shape which protrudes in cross-sectional mountain shape. Can do. For this reason, in the normal opening method for opening the edge of the opened bag body, the opening force acts in the direction of shearing the pair of belt-like bases, and the first male claw and the first female claw are strongly related. This prevents misopening. On the other hand, the outer surface of the bag body provided with the belt-like base portion provided with no bent portion (the storage space side from the belt-like base portion) and the edge of the opening portion of the bag body provided with the belt-like base portion provided with the bent portion are pinched. When the bag body is pulled so as to spread, the second male claw and the second female claw are separated from each other and disengaged, and can be easily released.

Furthermore, in this invention, the said zipper tape can also be set as the structure which has two or more pairs of the said engaging parts.
In the present invention, a plurality of pairs of engaging portions can be provided. As a result, the engagement force is increased, thereby preventing erroneous opening and improving the sealing performance.
Here, the plurality of pairs of engaging portions are not limited to the same shape.

Further, in the present invention, the outer surface of the bag body is located on the storage space side with respect to the position where the band-shaped base portion, which is not provided with the bent portion, of the pair of band-shaped base portions is attached to the bag body. Thus, a configuration in which a gripping portion is provided may be employed.
According to the present invention, the male side collar and the female side collar are engaged by pulling the bag body with the opened edge of the bag body to which the belt-like base provided with the bent part is joined and the grip part. Opening force acts so as to release. For this reason, it can open easily by the simple operation | work which pulls with a holding part.

The front view of the bag body with a zipper tape which concerns on 1st embodiment of this invention. Sectional drawing of the said bag body with a zipper tape. Sectional drawing of the principal part of the said bag body with a zipper tape. The schematic block diagram of the manufacturing apparatus which manufactures the said bag with a zipper tape. The principal part sectional drawing explaining the state which prevents opening of the said bag with a zipper tape. It is principal part sectional drawing explaining the operation | movement which opens the said bag with a zipper tape, (A) is the state which acted on opening force, (B) is the state opened. The principal part sectional drawing after opening which shows the bag body with a zipper tape which concerns on 2nd embodiment of this invention. The principal part sectional drawing explaining the state which prevents opening of the said bag with a zipper tape. It is principal part sectional drawing explaining the operation | movement which opens the said bag with a zipper tape, (A) is the state which acted on opening force, (B) is the state opened. The top view which shows the bag body with a zipper tape which concerns on 3rd embodiment of this invention. Sectional drawing of the said bag body with a zipper tape. Explanatory drawing which shows the condition which forms the holding part of the bag body with a zipper tape in the manufacturing apparatus which manufactures the said bag with a zipper tape. It is principal part sectional drawing explaining the operation | movement which opens the said bag with a zipper tape, (A) is the state which acted on opening force, (B) is the state opened. Sectional drawing of the principal part of the said bag body with a zipper tape which concerns on other embodiment of this invention. Sectional drawing of the principal part of the said bag body with a zipper tape which concerns on other embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Here, in description of each embodiment, the same component is attached | subjected with the same code | symbol and description is abbreviate | omitted or simplified. In addition, the zipper tape of this invention and a bag body with a zipper tape are not limited to the following embodiment.

[First embodiment]
1-3, the bag body with a zipper tape of 1st embodiment is shown.
In 1st embodiment, the bag body which wraps various articles | goods, such as a foodstuff, a chemical | medical product, a medical supplies, a stationery, miscellaneous goods, is illustrated as a bag body with a zipper tape, However, A use is not limited to these.

{Configuration of bag body with zipper tape}
The front of the bag body 1 with a zipper tape is shown by FIG. The cross section of the bag body 1 with a zipper tape is shown by FIG. The principal part cross section of the zipper tape vicinity of the bag body 1 with a zipper tape is shown by FIG. 1 to 3 exaggerate the zipper tape for convenience of explanation.
In FIG. 1, a bag body 1 with a zipper tape has a rectangular shape in a plan view and can store an object to be packaged, and is attached to the inner surface of the bag body 10 by bonding, for example, a heat-sealed zipper tape 20. And.

(Bag body configuration)
The bag body 10 includes base films 11A and 11B (only 11A shown in FIG. 1), which are films, and a pair of side surface portions 10A as gussets woven inward by folding lines on both overlapping edges. Have. Further, the bag body 10 has a bottom surface portion 10B woven inward by a fold line at the overlapping bottom portion.
The bag body 10 has side seal portions 12 that form a pair on both edges of the base films 11A and 11B and the side surface portion 10A that overlap each other. A bottom seal portion 13 is formed on each of the overlapping edges of the base films 11A and 11B and the bottom surface portion 10B. A top seal portion 14 is formed at the end edge of the overlapped base film 11 </ b> A, 11 </ b> B that is orthogonal to the side seal portion 12 and on the opposite end of the bottom seal portion 13.
The bag body 10 is partitioned by a side seal portion 12, a bottom seal portion 13, and a top seal portion 14 into a storage space 10C in which the article P (see FIG. 2) is stored.

A zipper tape 20 is attached to the opposing base film 11A, 11B of the bag body 10.
Note that, in the side seal portion 12 of the bag body 10, both ends in the longitudinal direction of the zipper tape 20 are flattened point seal portions (not shown).

The top seal portion 14 is provided with two hole-shaped handles 14A.
The handle 14A is a plane oval hole formed in the base films 11A and 11B. Note that the shape of the hole is not limited to a plane ellipse, and may be a plane circle, a plane rectangle, a plane triangle, or the like, and the number of holes can be suitably held with one or more. . Further, as the handle 14A, various shapes such as a configuration in which a separate string-like member can be attached and gripped can be applied. In addition, it is good also as a structure which does not provide a handle.

  Further, in the bag body 10, a position where both ends in the longitudinal direction of the zipper tape 20 intersect with the periphery of the side seal part 12 of the bag body 10, and a periphery of the top seal part 14 and the side seal part 12 intersect. A notch 17 is cut between the two positions.

As the base films 11A and 11B, for example, a single-layer film or a multi-layer film formed of a thermoplastic resin such as (Linear Low Density Polyethylene: LLDPE) or polypropylene (Polypropylene: PP). Can be used. Multi-layer films include biaxially oriented polypropylene (Oriented Polypropylene: OPP), biaxially oriented polyethylene terephthalate (OPET), biaxially oriented nylon (ONy), cast polypropylene (Cast Polypropylene: CPP), etc. Can be used. The multilayer film may have a configuration including an inorganic layer such as aluminum vapor deposition or lamination of aluminum foil for the purpose of so-called gas barrier or light shielding.
Further, the base films 11A and 11B are not particularly limited as long as they are packaging bag materials. For example, the thickness is preferably 10 μm or more and 200 μm or less. If the thickness dimension is less than 10 μm, the seal strength and bag strength may be weakened. On the other hand, when the thickness dimension exceeds 200 μm, the bent portion does not bend, which may make it difficult to open the bag.

(Configuration of zipper tape)
A cross section of the main part of the zipper tape 20 is shown in FIGS.
As shown in FIGS. 2 and 3, the zipper tape 20 includes a male member 21 and a female member 22 that are detachable from each other.
The male member 21 and the female member 22 are joined to the inner surfaces of the base films 11A and 11B facing each other by an appropriate method such as heat sealing or adhesion.

The male member 21 has a male side belt-like base portion 21A that is a band-like base portion that is bonded, for example, heat-sealed, to the inner surface of the bag body 10, and a male portion 21B that is a male side collar portion continuous with the male side belt-like base portion 21A. . The male part 21B is formed along the longitudinal direction of the male side belt-like base part 21A (paper surface penetration direction in FIG. 2). In FIG. 2, the position where the male side belt-like base portion 21 </ b> A is heat sealed to the bag body 10 is indicated by a bold line.
Further, the male side belt-like base portion 21A is bent at the base end of the male portion 21B serving as the base end of the engaging portion 23, on the opposite side to the storage space 10C in the width direction of the male side belt-like base portion 21A. A portion 21C is provided. The bent portion 21C is provided in a concave groove shape along the engaging portion 23 so as to be stepped in the thickness direction from both surfaces of the male-side band-shaped base portion 21A.
The bent portion 21C is not limited to being formed in a series of concave grooves, and may be provided so that holes and concave portions are continuous in a broken line shape. Further, for example, the male belt-like base portion 21A is easily bent at the portion such as a shape lacking in a V-shaped cross section, a softer member than other portions, or a bellows shape. If it is.

And the male part 21B has the 1st male side nail | claw 21B1 which protrudes in the storage space 10C side, and the 2nd male side nail | claw 21B2 which protrudes on the opposite side to this 1st male side claw 21B1.
The first male claw 21B1 has a storage-side inclined surface 21B3 facing the male-side band-shaped base 21A, and an angle α formed between the tangent line 21B4 of the storage-side inclined surface 21B3 and the perpendicular 21B5 of the male-side band-shaped base 21A is 90. It is formed in a cross-sectional ridge shape with an angle smaller than °.
On the other hand, the second male claw 21B2 has an opening-side inclined surface 21B6 facing the male-side band-shaped base 21A, and an angle β formed between the tangent line 21B7 of the opening-side inclined surface 21B6 and the perpendicular 21B5 of the male-side band-shaped base 21A is It is formed in a cross-sectional mountain shape with an angle larger than 90 °.
Here, the tangent line 21B4 is a tangent line of the plane if the storage-side slope 21B3 is a plane, and a tangent line passing through the inflection point S if the curved surface is curved. The same applies to the tangent line 21B7.

The female member 22 is provided on the inner surface of the bag body 10 so as to be joined to, for example, heat-sealed, a female-side belt-like base portion 22A and a female-side belt-like base portion 22A that protrudes from the female-side belt-like base portion 22A. And a female portion 22B as a collar portion. The female portion 22B is formed along the longitudinal direction of the female-side belt-like base portion 22A (the paper surface penetration direction in FIG. 2). In addition, in FIG. 2, the position where 22 A of female side strip | belt-shaped base parts were heat-sealed by the bag main body 10 is similarly shown with a thick line.
The female portion 22B is formed so that the first female claw 22B1 engageable with the first male claw 21B1 and the second female claw 22B2 engageable with the second male claw 21B2 face each other. ing.
In the zipper tape 20, the male portion 21B and the female portion 22B constitute the engaging portion 23 of the present invention.

Such a zipper tape 20 is formed using, for example, a polyolefin resin. In addition, you may form the zipper tape 20 so that it may have the shape-retaining property which hold | maintains the state by bending with respect to a longitudinal direction.
As the polyolefin resin, for example, polyethylene resins such as low density polyethylene or linear low density polyethylene, and polypropylene resins are preferable. As the polypropylene resin, homopolypropylene (H-PP), block polypropylene (B-PP), random polypropylene (R-PP), propylene-ethylene-butene 1 random terpolymer can be used.

  And as for the bag body 1 with a zipper tape, the bag 1A (refer FIG. 4) with the zipper tape in which the bottom seal | sticker part 13 was provided is manufactured, and the to-be-packaged goods P from the input port which this zipper tape-equipped bag 1A opens. Is inserted. Then, the bag 1 with a zipper tape which accommodated the to-be-packaged goods P is obtained by sealing an insertion port.

{Manufacture of bags with zipper tape}
Next, as an operation for manufacturing the bag body 1 with a zipper tape of the first embodiment, an operation for manufacturing a bag with a zipper tape before the article P to be packaged will be described with reference to the drawings. In addition, various methods can be employ | adopted in order to manufacture a bag with a zipper tape.
The schematic block diagram of the manufacturing apparatus which manufactures a bag with a zipper tape is shown by FIG.

(manufacturing device)
The manufacturing apparatus 5 shown in FIG. 4 has a so-called three-way bag making machine as a basic configuration, and joins the male member 21 and the female member 22 to the base films 11A and 11B, respectively, and the bag with zipper tape 1A is made. To do.
The manufacturing apparatus 5 includes a film supply unit 51 that sends out the base films 11A and 11B, a pair of tape supply units 52 that are tape member supply mechanisms that send out the zipper tape 20 in which the male part 21B and the female part 22B are engaged, The male member 21 and the female member 22 are heat-sealed to the base films 11A and 11B, respectively, and a bag making portion 54 for forming the bag body 10 to form the bag 1A with zipper tape is provided.

The film supply unit 51 is detachably mounted with a film take-up roll 111 around which the film 11 is wound, and the film 11 is cut into base films 11A and 11B with a cutting blade (not shown), etc. 11A and 11B are sent out.
Note that the delivery of the base films 11A and 11B is not limited to a configuration in which the base films 11A and 11B are continuously sent out at a constant speed, for example, and any delivery method such as a configuration in which the base films 11A and 11B are intermittently delivered can be applied.

The tape supply unit 52 detachably attaches a tape take-up roll 521 around which the zipper tape 20 is wound, and sends out the zipper tape 20. The fed zipper tape 20 is supplied from the side with respect to the direction in which the base films 11A and 11B are sent out, and is bent in the direction in which the base films 11A and 11B are sent out at a predetermined position using a roller or the like. , Sent out between the base films 11A and 11B.
The delivery of the zipper tape 20 is not limited to a configuration in which the zipper tape 20 is continuously delivered at a constant speed, and any delivery method such as a configuration in which the zipper tape 20 is intermittently delivered can be applied.

  The bag making section 54 includes a pair of seal bars 541 that heat-seal the male member 21 and the female member 22 of the zipper tape 20 fed from the tape supply section 52 to the base film 11A and 11B, respectively, and an overlapping base film 11A. , 11B provided with a bottom surface portion 10B (not shown), overlapping base films 11A, 11B provided with a side surface portion 10A (not shown), a zipper tape-attached bag 1A and a first cutting portion 545 and second A cutting portion 546, and the like.

The bottom forming portion includes a bottom seal bar 543 that heat seals the bottom surface portion 10B to the base films 11A and 11B to form the bottom seal portion 13.
The side surface forming portion includes a side seal bar 544 that heat seals the side surface portion 10A to the base film 11A, 11B and forms the side seal portion 12.

The base films 11A and 11B and the male member 21 and the female member 22 can be joined not only by heat sealing but also by various methods such as ultrasonic welding and bonding using an adhesive.
And as a next process of the manufacturing apparatus 5, the filling apparatus (not shown) which fills the to-be-packaged goods P in the formed bag 1A with a zipper tape is provided.

(Manufacturing method of bag with zipper tape)
Next, the manufacturing method which manufactures the bag 1A with a zipper tape before accommodating the to-be-packaged goods P of the bag body 1 with a zipper tape using the said manufacturing apparatus 5 is demonstrated with reference to drawings.

  The manufacturing method of the zipper tape-attached bag 1A is manufactured using, for example, a three-side bag manufacturing apparatus 5 shown in FIG. 4, and includes a film supply process for supplying the film 11, a tape supply process for supplying the zipper tape 20, and a male An attachment process for heat-sealing the member 21 and the female member 22 to the base film 11A, 11B, a bag making process for forming the zipper tape-attached bag 1A from the base film 11A, 11B, and the like are performed.

First, the film take-up roll 111 around which the film 11 is wound is mounted on the film supply unit 51.
Further, the female member 22 and the male member 21 are formed by extrusion molding or the like. Then, the female portion 22B of the female member 22 and the male portion 21B of the male member 21 are engaged and wound as a single zipper tape 20 around the tape take-up roll 521, and the tape take-up roll 521 is wound around the tape supply portion 52. Wear it.

  And in a film supply process, the film 11 is cut | disconnected so that the film 11 supplied from the film winding roll 111 may be bisected in the direction which cross | intersects with respect to the delivery direction of the film 11 with a cutting blade. By this cutting, the base films 11A and 11B are cut out and sent to the downstream side.

Further, in the tape supply process, the zipper tape 20 drawn out from the tape take-up roll 521 is sent out between the base film 11A, 11B which is overlapped and sent out in the film supply process.
In the attaching step, both end portions in the width direction of the male member 21 and the female member 22 are joined, that is, heat-sealed, to the one base film 11A, 11B by the seal bar 541, respectively.
In the bag making process, the bottom seal part 13 is formed by the bottom seal bar 543 on the base film 11A, 11B to which the male member 21 and the female member 22 are attached in the attaching process, and the bottom face part 10B is provided. The side seal portion 12 is formed by the bar 544 and a pair of side surface portions 10A are provided, and the bag body 10 having a gusset shape to which the zipper tape 20 is attached is made to produce the bag 1A with zipper tape.
Then, the obtained bag 1A with zipper tape is filled with the top seal portion 14 and the handle 14A at the edge of the charging port after the packaging material P is loaded from the loading port (not shown) that opens in the filling step of the next step. Is provided to seal the inlet. By this filling process, the bag body 1 with a zipper tape which accommodated the to-be-packaged goods P is obtained.

{Use of bag with zipper tape}
Next, the use situation of the said bag body 1 with a zipper tape is demonstrated.
FIG. 5 shows a cross section of a main part showing a situation of preventing erroneous opening when opening with an opened edge. FIG. 6 shows a cross section of the main part showing the opening state when opening with the opened edge and the outer surface of the bag body, (A) is the state where the opening force is applied, and (B) is the engagement. This is a state where the engagement of the joint portion is released.

First, when the user first removes the package from the zipper tape-attached bag body 1, as shown in FIG. 5, the base film 11 </ b> A, 11 </ b> B is torn from the notch 17 and the top seal portion 14 side is removed. By opening, the opening 18 is formed and opened.
Here, when the child opens with interest, or for the purpose of tampering, the opening 18 is widened with the opposite edges of the normal opening 18 and the engagement portion 23 is engaged. If you try to release it, it will prevent accidental opening. Specifically, as shown in FIG. 5, the opening 18 is widened so that the bent portion 21 </ b> C provided on the male side belt-like base 21 </ b> A is bent, and a tensile force acts in the direction indicated by the arrow in FIG. 5. For this reason, the pulling force for opening acts in a direction to shear the male side belt-like base portion 21A and the female side belt-like base portion 22A along the plane of the male side belt-like base portion 21A and the female side belt-like base portion 22A. . Accordingly, the first male claw 21B1 and the first female claw 22B1 having a cross-sectionally ridged shape are in mesh with each other, and the first male claw 21B1 and the first female claw 22B1 are strongly engaged, resulting in erroneous opening or falsification. Opening for is prevented.
In this way, it is possible to prevent items such as cosmetics and medicines or fine parts that are desired to be kept away from the infant or child from being accidentally opened and taken out, or opened for the purpose of tampering.

On the other hand, in order for the user of the article to be packaged P previously stored in the bag body 10 to take out the article to be packaged P or to newly store the article to be packaged P in the bag body 10, the engagement portion 23 is engaged. In the case of canceling, a unique opening method is carried out. That is, the outer surface of the bag body 10 in which the female side belt-like base portion 22A not having the bent portion 21C is heat-sealed, specifically, the outer surface on the storage space 10C side from the female side belt-like base portion 22A, and the male side belt-like shape having the bent portion 21C. The base 21A is gripped with the edge of the opening 18 of the bag body 10 heat-sealed, and the bag body 10 is pulled wide. In addition, as a picking position, if the bag main body 10 is shown by printing etc., for example, the user can easily open the bag.
The pulling force that spreads the bag body 10 acts as shown by the arrow in FIG. 6A, and the second male claw 21B2 and the second female claw 22B2 are engaged. In the state shown in FIG. 6A, the second male claw 21B2 has a mountain-shaped cross section, so that the tensile force acts so that the second male claw 21B2 gets over the second female claw 22B2, The engagement portion 23 can be disengaged with a small force.
The outer surface of the bag body 10, that is, the outer surface on the storage space 10C side from the female band-shaped base 22A and the outer surface on the opening 18 side from the male band-shaped base 21A are slid with a finger in a direction away from each other. Can be opened as well.
And after taking out or storing the to-be-packaged goods P, the bag main body 10 is resealed by engaging the male part 21B and the female part 22B again.

{Effect of the first embodiment}
As described above, in the first embodiment, the bent portion 21C is provided on the opening 18 side of the base end of the engaging portion 23 in the width direction of the male side belt-like base portion 21A. The opening 18 side in the width direction of the male side belt-like base portion 21 </ b> A and the female side belt-like base portion 22 </ b> A is heat sealed to the inner surface of the bag body 10.
With this configuration, in the normal opening method of picking the opposite edges of the opening 18 of the bag body 10 and opening the opening 18 so that the opening 18 is widened, the male belt-like base 21A bends at the position of the bent portion 21C. A tensile force acts in a direction in which the male side belt-like base portion 21A and the female side belt-like base portion 22A are sheared. For this reason, it can prevent that the 1st male side nail | claw 21B1 and 1st female side nail | claw 22B1 mesh | engage strongly, and the engagement of the engaging part 23 is cancelled | released.
Therefore, a special opening operation is required for opening, and erroneous opening can be prevented.

In the first embodiment, the male side belt-like base portion 21 </ b> A having the bent portion 21 </ b> C is further heat-sealed to the inner surface of the bag body 10 on the side of the storage space 10 </ b> C from the position of the engaging portion 23 in the width direction. That is, the male side belt-like base portion 21A and the female side belt-like base portion 22A are four-point seals in which both end sides in the width direction are heat-sealed.
For this reason, for example, when a pulling force that is a large opening force is applied to try to forcefully open the edge of the opening 18 by opening it, a large pulling force acts on the thin bent portion 21C, and the bent portion 21C is cut off. Therefore, it is possible to easily find a trace that is forcibly opened and prevent falsification.

In the first embodiment, the bent portion 21C is thin.
For this reason, the structure by which the male side strip | belt-shaped base 21A bends in the position of the bending part 21C with the simple structure made thin is obtained.

Further, in the first embodiment, the bent portion 21 </ b> C is provided so as to be separated from the inner surface of the bag body 10.
For this reason, since there is a gap portion along which the zipper tape 20 is not fused along the inner surface of the bag body 10, the bag body 10 in contact with the gap portion is easily bent, and accordingly, the bent portion 21C is also bent at the same time. Bend. Therefore, a state where the bag body 10 is bent with a smaller force at the position of the bent portion 21C is obtained. Therefore, when trying to release the engagement of the engaging portion 23 with the edge of the opening 18, the pulling force at this time acts in a direction to shear the male side belt-like base portion 21A and the female side belt-like base portion 22A. It becomes easy. Therefore, the state which 1st male side nail | claw 21B1 and 1st female side nail | claw 22B1 mesh | engage strongly is obtained, and it can prevent a misopening more.

In the first embodiment, the first male claw 21B1 protruding to the storage space 10C side is formed to have a cross-sectional hook shape, and the second male side protruding to the opposite side of the first male claw 21B1. The claw 21B2 is formed so as to have a hook shape in cross section.
For this reason, in the normal opening method of opening so that the edge of the opening part 18 of the opened bag main body 10 may be opened, the male side belt-like base part 21A is bent at the bent part 21C, and the male side belt-like base part 21A and the female side belt-like base part. A pulling force acts in the direction of shearing 22A. Therefore, the first male claw 21B1 and the first female claw 22B1 having a cross-sectional ridge shape are strongly meshed to prevent erroneous opening.
On the other hand, when opening, it opens by a specific opening method. That is, the opening 18 of the bag body 10 in which the female-side belt-like base portion 22A of the bag body 10 in which the female-side belt-like base portion 22A is heat-sealed and the male-side belt-like base portion 21A having the bent portion 21C is heat-sealed. And then pulling the bag body 10 wide. Then, the second male claw 21B2 and the second female claw 22B2 having a cross-sectional mountain shape are separated from each other and disengaged, and can be easily disengaged. Thus, when opening, it can open easily and can prevent misopening more.

And in said 1st embodiment, the bending part 21C is provided in the male member 21 side.
Here, when the bent portion 21C is provided in the female side belt-like base portion 22A provided with the female portion 22B, a shearing force acts on the opposite side to the case provided in the male side belt-like base portion 21A provided with the male portion 21B. For this reason, in order to be able to open it, it is necessary to reduce the hook of the 1st male side nail | claw 21B1. If it does so, since it will become weak with respect to an internal pressure, it is preferable to provide the bending part 21C in the male member 21 side.

[Second Embodiment]
Next, a second embodiment of the present invention will be described based on the drawings.
FIG. 7 shows a cross-section of the main part after opening the zipper tape-attached bag body in the second embodiment.
In the second embodiment, in addition to the engaging portion in the first embodiment, an engaging collar as another engaging portion is provided.

{Configuration of zipper tape}
Specifically, the male member 21 has a male side band-like base portion 21A, a male portion 21B, and a male side collar portion 21D.
The male side collar portion 21D is located closer to the storage space 10C than the male portion 21B, and is provided in parallel with the male portion 21B. The male part 21B and the male side collar part 21D are not limited to being parallel. For example, what is formed in a wave shape may be in parallel.
And male side collar part 21D has the 3rd male side nail | claw 21D1 which protrudes in the storage space 10C side. Similar to the first male claw 21B1, the third male claw 21D1 has a storage-side inclined surface 21D3 that faces the male-side band-shaped base 21A, and a tangent line 21B8 of the storage-side inclined surface 21D3 and the male-side band-shaped base 21A. An angle γ formed with the perpendicular line 21B5 is formed in a cross-sectional shape having a smaller angle than 90 °.

The female member 22 has a female-side belt-like base portion 22A, a female portion 22B, and a female-side flange portion 22D that can be engaged with the male-side flange portion 21D.
Female side collar part 22D has 3rd female side nail | claw 22D1 which protrudes toward the opening part 18 side so that 3rd male side nail | claw 21D1 can engage.
In the zipper tape 20, the male side collar part 21 </ b> D and the female side collar part 22 </ b> D constitute an engagement collar part 24 as an engagement part of the present invention.

{Use of bag with zipper tape}
Next, the use situation of the said bag body 1 with a zipper tape is demonstrated.
FIG. 8 shows a cross section of a main part showing a situation of preventing erroneous opening when opening with an opened edge. FIG. 9 shows a cross section of the main part showing the opening state when opening with the opened edge and the outer surface of the bag body, (A) is the state where the opening force is applied, and (B) is the engagement. This is a state where the engagement of the joint portion is released.

First, when the user first removes the package from the bag body 1 with the zipper tape, as shown in FIG. 8, the base film 11 </ b> A, 11 </ b> B is torn from the notch 17 and the top seal portion 14 side is removed. By opening, the opening 18 is formed and opened.
Here, when the child opens the box with interest, or for the purpose of tampering, hold the edge of the normal opening 18 and widen the opening 18 to release the engagement of the engaging part 23. In this case, erroneous opening is prevented. Specifically, as shown in FIG. 8, a pulling force acts in the direction indicated by the arrow in FIG. 8 so that the bent portion 21C provided on the male side belt-like base portion 21A is bent and bent. For this reason, the pulling force for opening acts in a direction to shear the male side belt-like base portion 21A and the female side belt-like base portion 22A along the plane of the male side belt-like base portion 21A and the female side belt-like base portion 22A. . Therefore, the first male claw 21B1 and the first female claw 22B1 having a cross-sectional shape and the third male claw 21D1 and the third female claw 22D1 are engaged with each other. For this reason, the first male claw 21B1 and the first female claw 22B1, and the third male claw 21D1 and the third female claw 22D1 are strongly engaged with each other, and unsealed for tampering or tampering. Is prevented.
In this way, it is possible to prevent accidental opening such as cosmetics and medicines, or fine parts such as items that you want to keep away from infants and children, or are opened for the purpose of tampering. .

On the other hand, in order for the user of the article to be packaged P previously stored in the bag body 10 to take out the article to be packaged P or to newly store the article to be packaged P in the bag body 10, the engagement portion 23 is engaged. In the case of canceling, a unique opening method is carried out. That is, the outer surface of the bag body 10 in which the female side belt-like base portion 22A not having the bent portion 21C is heat-sealed, specifically, the outer surface on the storage space 10C side from the female side belt-like base portion 22A, and the male side belt-like shape having the bent portion 21C. The base 21A is gripped with the edge of the opening 18 of the bag body 10 heat-sealed, and the bag body 10 is pulled wide. In addition, as a picking position, if the bag main body 10 is shown by printing etc., for example, the user can easily open the bag.
The pulling force that spreads the bag body 10 acts as shown by the arrow in FIG. 9A, and the second male claw 21B2 and the second female claw 22B2 are engaged. Furthermore, the third male side claw 21D1 and the third female side claw 22D1 act in a direction in which the tensile forces are separated from each other. In the state shown in FIG. 9A, since the second male claw 21B2 has a mountain-shaped cross section, the tensile force acts so that the second male claw 21B2 gets over the second female claw 22B2, and The third male claw 21D1 and the third female claw 22D1 are separated from each other. Therefore, the engagement portion 23 can be disengaged with a relatively small force.
And after taking out or storing the to-be-packaged goods P, the bag main body 10 is resealed by engaging again the male part 21B and the female part 22B, and the male side collar part 21D and the female side collar part 22D, respectively. Stopped.

{Effect of the second embodiment}
As described above, in the second embodiment, the zipper tape 20 is engaged with the engaging portion 23 and the engaging flange portion 24 in a plurality of strips.
For this reason, in addition to the effect of 1st embodiment, the engagement force of the male member 21 and the female member 22 becomes higher, and can prevent misopening more.

Moreover, in said 2nd embodiment, the 3rd male side nail | claw 21D1 which protrudes only to the storage space side is provided in the male side collar part 21D as the engagement collar part 24. As shown in FIG.
For this reason, when opening, the pulling force for opening will act in the direction which 3rd male side nail | claw 21D1 and 3rd female side nail | claw 22D1 leave | separate. Therefore, even in a configuration in which the engagement force is increased to prevent erroneous opening, the opening force is suppressed from increasing and can be easily opened.

[Third embodiment]
Next, a third embodiment of the present invention will be described based on the drawings.
The plane of the bag body with a zipper tape in 3rd embodiment is shown by FIG. FIG. 11 shows a cross section of a bag body with a zipper tape.
In the third embodiment, a grip portion is provided on the outer surface of the bag body 10 in the first embodiment.

{Configuration of bag body}
Specifically, on the outer surface of the bag body 10, the base film 11 </ b> B is squeezed toward the storage space 10 </ b> C side, that is, the bottom side (lower side in FIG. 10) from the position where the female member 22 is disposed. A gripping portion 16 formed in a tongue shape is provided.
The position where the gripping portion 16 is provided is preferably in the vicinity of the zipper tape 20 such as an adjacent positional relationship such that the zipper tape 20 is located at the base end.
Both ends of the grip portion 16 in the longitudinal direction (left and right direction in FIG. 1) are sealed by the side seal portion 12, and the grip portion 16 is formed in a pocket shape that opens toward the bottom seal portion 13 side.

{Manufacture of bags with zipper tape}
Next, as an operation for manufacturing the zipper tape-attached bag body 1 according to the third embodiment, an operation for manufacturing the zipper tape-attached bag before storing the article to be packaged P will be described with reference to the drawings. In addition, although demonstrated using the manufacturing apparatus of the three-way bag making similar to 1st embodiment, in order to manufacture a bag with a zipper tape, various methods are employable.
FIG. 12 is an explanatory diagram for explaining the formation state of the grip portion.
In FIG. 12, the left side of the drawing is a plan view of the formation state of the grip portion, and the right side of the drawing is a cross-sectional view at each stage in the plan view. Specifically, (A) in FIG. 12 is the situation where the film is fed out, (B) is the situation where the film is being dragged, (C) is the situation where the film is being formed on the gripping part, and (D) the gripping part is formed. (E) is a situation in which the film is cut with a cutting blade, and (F) is a situation in which a pair of base film having a grip portion is cut out.

The manufacturing apparatus 5 has a so-called three-way bag making machine as a basic configuration, and joins the male member 21 and the female member 22 to the base film 11A and 11B, respectively, to make a bag 1A with a zipper tape. .
The manufacturing apparatus 5 includes a film supply unit 51 that sends out the base films 11A and 11B, a pair of tape supply units 52 that are tape member supply mechanisms that send out the zipper tape 20 in which the male part 21B and the female part 22B are engaged, The male member 21 and the female member 22 are heat-sealed to the base films 11A and 11B, respectively, and a bag making portion 54 for forming the bag body 10 to form the bag 1A with zipper tape is provided.

The film supply unit 51 is detachably mounted with a film take-up roll 111 around which the film 11 is wound, and the film 11 is cut into base films 11A and 11B with a cutting blade 51A (see FIG. 12). The material films 11A and 11B are sent out.
The film supply unit 51 is provided with a grip forming unit 51B as shown in FIG. The grip forming portion 51B includes a pair of rollers 511 that crawl on one side in the longitudinal direction of the film 11, and a guide plate 512 that overlaps the squeezed film 11 so as to be folded back at a predetermined position with a predetermined length. And a heat seal bar 513 that forms a tongue-shaped gripping portion 16 by heat-sealing a portion where the film 11 is partially folded and overlapped by the guide plate 512, for example. In forming the gripping portion 16, not only heat sealing but also various methods such as welding by ultrasonic waves and adhesion using an adhesive can be used.
The delivery of the base films 11A and 11B is not limited to a configuration in which the base films 11A and 11B are continuously delivered at a constant speed, for example, and any delivery method such as an intermittent delivery configuration can be applied.

  And in manufacture of the bag 1A with a zipper tape, it is manufactured, for example using the manufacturing apparatus 5 of a three-way bag, the film supply process which supplies the film 11, the tape supply process which supplies the zipper tape 20, and the male member 21 And a female member 22 are heat-sealed to the base films 11A and 11B, and a bag making process for forming the zipper tape-attached bag 1A from the base films 11A and 11B.

First, the film take-up roll 111 around which the film 11 is wound is mounted on the film supply unit 51.
Further, the female member 22 and the male member 21 are formed by extrusion molding or the like. Then, the female portion 22B of the female member 22 and the male portion 21B of the male member 21 are engaged and wound as a single zipper tape 20 around the tape take-up roll 521, and the tape take-up roll 521 is wound around the tape supply portion 52. Wear it.

And in a film supply process, the holding | grip formation process which forms the holding part 16 on the film 11 supplied from the film winding roll 111 by the holding | grip formation part 51B is implemented.
Specifically, the film 11 supplied in the stage of FIG. 12A is squeezed at a predetermined position and partially curved by the roller 511 of the grip forming part 51B in the stage of FIG. 12B. Loosen. After that, at the stage of FIG. 12C, the film 11 of the slackened portion is shaped by a predetermined length by the guide plate 512 of the grip forming portion 51B so as to be partially folded and overlapped. Then, at the stage of FIG. 12D, the portion of the film 11 that is folded and overlapped is heat sealed with the heat seal bar 513 of the grip forming portion 51B to form the tongue-shaped grip portion 16.
After this grip formation step, as shown in the stage of FIG. 12E, the film 11 is cut by the cutting blade 51A so as to be divided into two equal parts in the direction intersecting the feeding direction of the film 11. By this cutting, as shown in the stage of FIG. 12 (F), the base films 11A and 11B each having the grip portion 16 are cut out and sent to the downstream side.
Thereafter, similarly to the first embodiment, the tape supply step, the attachment step, and the bag making step are performed, and the zipper tape-attached bag 1A is manufactured.

{Use of bag with zipper tape}
Next, the use situation of the said bag body 1 with a zipper tape is demonstrated.
FIG. 13 shows a cross section of the main part showing the opening state when opening with the opened edge and the outer surface of the bag body, (A) is the state where the opening force is applied, and (B) is the engagement. This is a state where the engagement of the joint portion is released.

First, when the user first removes the package from the bag body 1 with the zipper tape, as shown in FIG. 8, the base film 11 </ b> A, 11 </ b> B is torn from the notch 17 and the top seal portion 14 side is removed. By opening, the opening 18 is formed and opened.
Here, when the child opens the box with interest, or for the purpose of tampering, hold the edge of the normal opening 18 and widen the opening 18 to release the engagement of the engaging part 23. In such a case, erroneous opening is prevented as in the first embodiment. That is, the pulling force for opening acts on the male side band base 21A and the female side band base 22A in the direction of shearing along the plane of the male side band base 21A and the female side band base 22A. Then, the first male side claw 21B1 and the first female side claw 22B1 having a cross-sectional ridge shape are engaged with each other, and opening for erroneous opening or tampering is prevented.

On the other hand, in order for the user of the article to be packaged P previously stored in the bag body 10 to take out the article to be packaged P or to newly store the article to be packaged P in the bag body 10, the engagement portion 23 is engaged. In the case of canceling, a unique opening method is carried out. That is, the grip body 16 on the outer surface of the bag body 10 and the edge of the opening 18 of the bag body 10 in which the male side band-shaped base 21A having the bent portion 21C is heat-sealed are picked to widen the bag body 10. . In addition, as a picking position, if the bag main body 10 is shown by printing etc., for example, the user can easily open the bag.
The pulling force that expands the bag body 10 acts as shown by the arrow in FIG. 13A, and the second male claw 21B2 and the second female claw 22B2 are engaged. In the state shown in FIG. 13A, the second male claw 21B2 has a mountain-shaped cross section, so that the tensile force acts so that the second male claw 21B2 gets over the second female claw 22B2, The engagement portion 23 can be disengaged with a small force.
And after taking out or storing the to-be-packaged goods P, the bag main body 10 is resealed by engaging the male part 21B and the female part 22B again.

{Effect of the third embodiment}
As described above, in the third embodiment, the grip portion 16 is provided on the storage space 10C side with respect to the position where the female side band-shaped base portion 22A not having the bent portion 21C is attached to the bag body 10. Yes.
When opening the bag, the male side belt-like base 21A having the bent portion 21C is pulled to hold the edge of the opening 18 of the bag body 10 heat-sealed and the grip 16 so as to spread the bag body 10. As a result, a pulling force acts so as to release the engagement of the engagement portion 23, so that the engagement of the engagement portion 23 can be easily released. Therefore, in addition to the effect of the first embodiment, it can be easily opened by a simple operation of pulling with the grip portion 16.

[Modification]
Although the best configuration for carrying out the present invention has been disclosed in the above description, the present invention is not limited to this. That is, the present invention has been described primarily with reference to specific embodiments, but with respect to the above-described embodiments without departing from the scope of the technical idea and object of the present invention, the material, quantity, and other details. In this configuration, those skilled in the art can make various modifications.
Accordingly, the description of the materials, layer structures, and the like disclosed above is exemplary for easy understanding of the present invention, and does not limit the present invention. Descriptions with names excluding some or all of the limitations are included in the present invention.

The male portion 21B has a different claw shape from the first male claw 21B1 having a cross-sectional ridge shape and the second male claw 21B2 having a cross-sectional mountain shape, but may be a symmetrical shape having the same shape. Further, the engaging portion 23 may have a one-nail shape like the engaging flange portion 24.
Furthermore, in the present invention, not only the gusset shape having the side surface portion 10A and the bottom surface portion 10B, but also the configuration in which only the bottom surface portion 10B is provided, or the gusset shape without the bottom surface portion 10B, and the side surface portion 10A and the bottom surface portion. It is applicable also to the structure which does not have 10B.
Moreover, as a bag making method of the bag body 1 with a zipper tape, each method, such as a four-side bag making, a pillow type, and a rotary drum type, can be applied besides three-way bag making.

  As the thin bent portion 21C, for example, as shown in FIG. 14, a step is formed only on the base film 11A side, or as shown in FIG. 15, only on the side where the male portion 21B is provided. You may form so that it may become.

DESCRIPTION OF SYMBOLS 1 ......... Bag body with a zipper tape 1A ... Bag with a zipper tape which also functions as a bag body with a zipper tape 10 ......... Bag main body 10C ... Storage space 16 ......... Holding part 20 ......... Zipper tape 21A ... ... Male side base 21B ... Male part 21B1 ... First male side claw 21B2 ... Second male side claw 21B3 ... Slope storage side slopes 21B4, 21B7 ... tangential line 21B5 ... perpendicular line 21B6... Opening side slope as a slope 21C... Bending portion 22A... Female side strip base as a strip base 22B... Female portion as a female side buttock 22B1 ... First female side claw 22B2 ... Second female side claw 23 ......... engagement part 24 ......... engagement flange P as engagement part P ...

Claims (9)

A bag body having a storage space capable of storing an article to be wrapped;
Zipper tape joined to the inner surface of the bag body,
The zipper tape is
A pair of male side collars and female side collars each capable of engaging with each other, and a pair of belt-like bases respectively connected to the engagement parts,
One of the band-like bases having the male side collar part or the female side collar part has a bent part located at the base end of the engaging part on the opposite side to the storage space in the width direction of the band-like base part. Provided,
The pair of belt-like base portions are respectively joined to the bag main body. In the bag body with a zipper tape according to claim 1,
The zipper tape-attached bag body, wherein the belt-like base portion provided with the bent portion is further joined to the bag body on the storage space side than the position where the engaging portion is provided in the width direction. In the bag body with a zipper tape of Claim 1 or Claim 2,
The zipper tape-attached bag body, wherein the bent portion is formed thinner than the thickness of the band-like base portion provided with the bent portion. In the bag body with a zipper tape according to claim 3,
The bent portion is separated from an inner surface of the bag body. A bag body with a zipper tape. In the bag body with a zipper tape as described in any one of Claim 1- Claim 4,
The bent portion is a plurality of holes or concave portions that are continuous in a broken line shape. In the bag body with a zipper tape as described in any one of Claim 1- Claim 5,
The zipper tape-attached bag body, wherein the bent portion is provided on a belt-like base portion on which the male side collar portion is provided. In the bag body with a zipper tape as described in any one of Claim 1- Claim 6,
The male side collar has a first male side claw protruding to the storage space side, and a second male side claw protruding to the opposite side of the first male side claw,
The female side collar has a first female claw that can be engaged with the first male claw, and a second female claw that can be engaged with the second male claw,
The first male claw has a slope facing the strip-shaped base provided with the male side collar, and an angle formed by a tangent to the slope and a perpendicular of the strip-shaped base provided with the male side collar. α is formed at an angle smaller than 90 °,
The second male claw has a slope facing the band-shaped base provided with the male side collar, and an angle formed by a tangent to the slope and a perpendicular of the band-shaped base provided with the male side collar. A bag with zipper tape, wherein β is formed at an angle larger than 90 °. In the bag body with a zipper tape as described in any one of Claim 1- Claim 7,
The zipper tape has a plurality of pairs of the engaging portions. A bag body with a zipper tape. In the bag body with a zipper tape as described in any one of Claim 1- Claim 8,
On the outer surface of the bag body, a gripping portion is provided on the storage space side with respect to the position where the belt-shaped base portion of the pair of belt-shaped base portions not provided with the bent portion is attached to the bag body. A bag body with a zipper tape characterized by being made.

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