JP6805572B2 - Resealable pouch - Google Patents

Description

The present invention relates to a pouch in which the contents are not spilled by opening the contents outlet once and then closing the contents outlet again.

As such a resealable pouch, a pouch or the like in which a plastic part or a chuck is attached in the vicinity of the content take-out port and can be opened and closed by the plastic part or the chuck is known. However, the pouch to which these plastic parts and chucks are attached has problems that the bag making process and the content filling process are complicated and costly, or the flexibility of the pouch is impaired.

On the other hand, in Patent Document 1, an adhesive label is easily peeled off from the outer surface of the pouch body, the opened pouch body is bent, and the content take-out port is formed between the adhesive label and the outer surface of the pouch body. A pouch that can be resealed by sandwiching it between them is described. In this pouch, since the adhesive label is simply attached to the outer surface of the pouch body, the bag making process and the content filling process are simple, and the flexibility of the pouch is not impaired.

In this pouch, when sandwiching the content outlet, it is first necessary to peel off the adhesive label from its end. However, since the adhesive label is in close contact with the outer surface of the pouch body, it was not easy to peel it off.

Jikkenhei 60-96242

Therefore, the present invention is a resealable pouch in which an adhesive label is attached to the outer surface of the pouch body, and the contents take-out port once opened is sandwiched between the outer surface of the pouch body and the adhesive label to re-seal. It is an object of the present invention to provide a resealable pouch in which the adhesive label can be easily peeled off from the outer surface of the pouch body in the pouch to be sealed.

That is, the invention according to claim 1 is a pouch having a pouch body having a content take-out port at an end and an adhesive label attached to the outer surface of the pouch body.
The adhesive label is composed of an adhesive sheet having adhesiveness and an easily peelable sheet partially adhered to the adhesive surface thereof.
A mold release agent is applied to the surface of the easily peelable sheet on the adhesive surface side to make it easy to peel off from the adhesive sheet.
The adhesive sheet has a linear slit that is convex toward the content extraction port , and a region surrounded by a straight line connecting both ends of the linear slit and the linear slit is used as a tongue piece.
The easily peelable sheet is adhered to the inside and outside of the tongue piece across the linear slit, and the easily peelable sheet is substantially similar to the linear slit of the adhesive sheet in the region inside the tongue piece. A linear slit in the shape is provided, and the tongue piece and the easily peelable sheet can be easily peeled off between the linear slit of the easily peelable sheet and the tip of the tongue piece .
And, the peripheral edge of the adhesive label, the region easily separable sheet does not exist and a pressure-sensitive adhesive area to adhere to the pouch body,
The tongue piece is arranged so as to face the content outlet of the pouch body.
It is a resealable pouch characterized by this.

This resealable pouch can peel off the tongue piece from the tip of the linear slit provided in the adhesive sheet. At this time, since the easily peelable sheet is adhered to the adhesive sheet across the inside and outside of the tongue piece across the linear slit, the peeling can be easily started. The adhesive surface of the adhesive sheet is exposed at the tip of the tongue piece thus peeled off.

When the peeling started from the tip of the linear slit is continued in this way, the linear slit of the easily peelable sheet is reached, and after the linear slit, the easily peelable sheet is peeled from the outer surface of the pouch together with the adhesive sheet.

Then, the contents take-out port that has been opened once is sandwiched between the outer surface of the pouch body and the adhesive label, and the adhesive surface at the tip of the tongue piece of the adhesive sheet is attached and fixed in the vicinity of the contents take-out port. , The pouch can be resealed. Since the vicinity of the content take-out port is only fixed by the adhesive surface at the tip of the tongue piece, it is possible to repeat opening and resealing many times.

1A and 1B relate to a specific example of an adhesive label, FIG. 1A is a cross-sectional explanatory view thereof, FIG. 1B is a plan explanatory view, and FIG. 1C is a bottom surface explanatory view. FIG. 2 relates to a specific example of the pouch of the present invention, FIG. 2 (a) is a front explanatory view thereof, and FIG. 2 (b) is an enlarged explanatory view of a main part on the xx line of FIG. 2 (a). FIG. 3 is a front explanatory view of a specific example of the pouch of the present invention in an opened state. 4A and 4B relate to a specific example of the pouch of the present invention in a resealed state, FIG. 4A is a front explanatory view thereof, and FIG. Is. FIG. 5 is a front explanatory view of another specific example of the pouch of the present invention.

Next, a specific example of the present invention will be described with reference to the drawings. For convenience of explanation, first, the adhesive label according to the present invention will be described, and then the pouch to which the adhesive label is attached will be described.

1A and 1B relate to a specific example of an adhesive label, FIG. 1A is a cross-sectional explanatory view thereof, FIG. 1B is a plan explanatory view, and FIG. 1C is a bottom surface explanatory view.

As can be seen from these figures, the adhesive label 2 has a rectangular outer shape, and is composed of an adhesive sheet 21 and an easily peelable sheet 22. The easily peelable sheet 22 is adhered to a part of the adhesive sheet 21, and the adhesive portion thereof will be described later.

The pressure-sensitive adhesive sheet 21 is obtained by laminating the pressure-sensitive adhesive layer 212 on one side of the pressure-sensitive adhesive sheet base material 211. The easily peelable sheet 22 is peelably adhered to the pressure-sensitive adhesive layer 212.

Any plastic film can be used as the pressure-sensitive adhesive sheet base material 211. For example, polyester film, polyamide film, polyethylene film, polypropylene film, polyvinyl chloride film and the like. Of course, a laminate of these films may be used. Further, it may be paper or a laminate containing paper. Depending on the purpose of use of the pouch and the environment in which it is used, the material may be selected in consideration of water resistance and the number of repetitions of opening and resealing.

Further, the pressure-sensitive adhesive layer 212 can be formed by applying a known pressure-sensitive adhesive to the entire surface of the pressure-sensitive adhesive sheet base material 211. The material of the adhesive is an adhesive that has sufficient adhesive strength and can withstand repeated opening and resealing, depending on the material of the pouch body to which the adhesive label 2 is attached, from among known adhesives. You can select and use.

As the easily peelable sheet 22, any sheet can be used as long as it can be peelably adhered to the pressure-sensitive adhesive layer 212. For example, a sheet using paper, a resin film, or a laminate obtained by laminating these as a base material and having a release agent applied to one side thereof can be used. As the release agent, for example, a known silicone-based release agent can be used. When using the easily peelable sheet coated with the release agent in this way, it is desirable to adhere to the pressure-sensitive adhesive sheet 21 so that the release agent layer is in contact with the pressure-sensitive adhesive layer 212.

Next, the adhesive sheet 21 is provided with a linear slit 21x penetrating the adhesive sheet 21. The linear slit 21x has a shape that is convex toward the outside of the rectangular adhesive label 2. In this example, as shown in FIG. 1B, the rectangular adhesive label 2 has a convex shape toward the corners.

The adhesive sheet 21 is divided into three regions by the linear slit 21x. First, there is an outer peripheral region 21a located on the outer periphery of the linear slit 21x and on the outer periphery of the rectangular adhesive label 2.

The second region is a region 21b surrounded by a straight line 21y connecting both ends 21x1,21x2 of the linear slit 21x and the linear slit. The straight line 21y connecting both ends 21x1,21x2 of the linear slit 21x is a virtual line, but is shown by a dotted line in FIG. 1B. The second region 21b has a role of sandwiching the content take-out port of the pouch body. For this reason, this area is called a "tongue piece".

Next, the third region is a region 21c located between the straight line 21y and the outer peripheral region 21a.

Next, the easily peelable sheet 22 is adhered to a part of the outer peripheral region 21a and the tongue piece 21b across the linear slit 21x.

Further, the easily peelable sheet 22 is also provided with a linear slit 22x penetrating the easily peelable sheet 22. The linear slit 22x needs to be located inside the tongue piece 21b. Further, it is desirable that the linear slit 22x has a shape convex toward the outside of the rectangular adhesive label 2. In this example, the linear slit 22x of the easily peelable sheet 22 has a shape substantially similar to the linear slit 21x of the adhesive sheet 21, and the linear slit 22x and the linear slit 21x are both rectangular adhesive labels 2. It has a convex shape toward the corners of. In FIG. 1B, the linear slit 22x of the easily peelable sheet 22 is shown by a broken line in order to show the positional relationship between the linear slit 22x and the linear slit 21x.

The bottom surface of the adhesive label 2 is divided into three regions by the region to which the easily peelable sheet 22 is attached, the linear slit 22x, and the linear slit 21x.

First, the first region is a region located on the peripheral edge of the outer peripheral region 21a of the pressure-sensitive adhesive sheet 21, and is a region 21d in which the easily peelable sheet 22 does not exist. Therefore, this region 21d is an adhesive region where the adhesive layer 212 is exposed. The adhesive region 21d has a role of adhering and fixing the adhesive label 2 to the outer surface of the pouch body. In the figure, 22y indicates the end portion of the easily peelable sheet 22, and since the easily peelable sheet 22 exists in the regions 22a and 22b surrounded by this region 21d, it adheres to the outer surface of the pouch body. do not do.

Next, the second region is a region 22a located on the convex side of the linear slit 22x of the easily peelable sheet 22 in the region surrounded by the adhesive region 21d. In this region, the easily peelable sheet 22 is easily peeled off and adhered to the pressure-sensitive adhesive layer 212, and the linear slit 21x of the pressure-sensitive adhesive sheet 21 is located in this region 22a. Therefore, when the adhesive sheet 21 is started to be peeled from the linear slit 21x, the tongue piece 21b of the adhesive sheet 21 can be easily peeled off. As described above, this region 22a is a region that does not adhere to the outer surface of the pouch body.

Next, the third region is a region 22b located on the opposite side of the convex portion of the linear slit 22x of the easily peelable sheet 22 in the region surrounded by the adhesive region 21d. In this region 22b, the easily peelable sheet 22 is adhered to the pressure-sensitive adhesive layer 212. In the portion of this region corresponding to the region 21 (the region surrounded by the straight line 21y connecting both ends 21x1,21x2 of the linear slit 21x and the linear slit), when the tongue piece 21b of the adhesive sheet 21 is peeled off, The easily peelable sheet 22 is peeled from the pouch body together with the adhesive sheet 21. Since the non-peeled portion is not adhered to the outer surface of the pouch body, when the tongue piece 21b is peeled off, this portion is surrounded by the adhesive region 21d between the pouch body and the easily peelable sheet 22. It constitutes a bag-shaped part.

Next, the pouch of the present invention will be described. FIG. 2 relates to a specific example of the pouch of the present invention, FIG. 2 (a) is a front explanatory view thereof, and FIG. 2 (b) is an enlarged explanatory view of a main part on the xx line of FIG. 2 (a).

As described above, the pouch 100 of the present invention is configured by attaching the adhesive label 2 to the outer surface of the pouch body 1. The pouch body 1 may be any bag, but it must have a content outlet at the end. This example is a rectangular bag made by heat-sealing the front and back films 11 and 12 around it, and has an opening line 1x at the upper corner, and the front and back films 11 and 12 are formed by the opening line 1x. The contents take-out port 1y can be formed by cutting. That is, the pouch body 1 is a bag having a content take-out port 1y at a corner.

Then, the adhesive label 2 needs to be attached so that the tongue piece 21b faces the content take-out port of the pouch body 1. That is, the convex portion of the convex linear slit 21x is arranged so as to face the opening line 1x.

The adhesive label 2 is adhered in the adhesive region 21d where the adhesive layer 212 is exposed. In the regions 22a and 22b where the easily peelable sheet 22 is arranged, the adhesive label 2 does not adhere to the pouch body 1 and is in a free state.

Further, the adhesive label 2 may be attached to either the front side film 11 or the back side film 12, and does not need to be attached to both sides.

In this pouch 100, the films 11 and 12 on the front and back sides are cut along the opening line 1x to form the content take-out port 1y (see FIG. 3). The contents can be taken out from the contents take-out port 1y opened in this way.

The pouch 100 thus opened can be resealed as shown in FIG. That is, first, the tongue piece 21b of the adhesive label 2 is partially peeled off from the pouch body 1. This peeling can be started by holding the tip of the tongue piece 21b located in the linear slit 21x of the adhesive sheet 21 and pulling it up. Since the linear slit 21x is located on the region 22a of the easily peelable sheet 22, the tip of the tongue piece 21b located here can be easily peeled off. The adhesive layer 212 is exposed at the tip of the tongue piece 21b thus peeled off.

Next, as the peeling progresses, the tongue piece 21b rises from the pouch body 1 and reaches the linear slit 22x of the easily peelable sheet 22. Then, the easily peelable sheet 22 is cut at the position of the linear slit 22x, and the region 22b of the easily peelable sheet 22 rises from the pouch body 1 together with the tongue piece 21b. The region 22b of the easily peelable sheet 22 is not adhered to the pouch body 1 and is in a free state. Therefore, since this peeling proceeds by peeling the tongue piece 21b from the region 22a of the easily peelable sheet 22 along the linear slit 21x, the progress of this peeling is also easy.

This peeling can be performed up to 21x1,21x2 at both ends of the linear slit 21x, but it is not always necessary to peel off to this point. Even when the peeling is performed up to 21x1,21x2 at both ends, or when the peeling is stopped before the peeling, the region 22b of the easily peelable sheet 22 is not adhered to the pouch body 1 and is in a free state. A bag-shaped portion having this region 22b as an accommodating portion is formed between 1 and the adhesive label 2.

Next, after the pouch body 1 is bent in the vicinity of the content take-out port 1y, the content take-out port 1y is inserted between the raised tongue piece 21b and the pouch body 1. Since the adhesive layer 212 is exposed at the tip of the tongue piece 21b, the tongue piece 21b can be adhered to the vicinity of the content take-out port 1y of the pouch body 1 by the exposed adhesive layer 212. By adhering the tongue piece 21b to the vicinity of the content extraction port 1y in this way, the content extraction port 1y can be fixed and careless opening can be prevented.

When the contents take-out port 1y is bent so as to face downward as shown in the drawing, the contents remaining in the vicinity of the contents take-out port 1y may be discharged from the contents take-out port 1y. The contents discharged in this way are housed in the bag-shaped portion between the pouch body 1 and the tongue piece 21b of the adhesive label 2, and can be prevented from spilling to the outside.

Although the pouch body 1 having the contents outlet at the upper corner has been described above as an example, the present invention is not limited to this. FIG. 5 shows an example in which the pouch body 1 having the opening line 1x on the upper side is used. Even in this case, it is necessary to attach the adhesive label 2 so that the tongue piece 21b faces the opening line 1x of the pouch body.

Further, the pouch body 1 may be a bag of any form such as a four-way seal bag, a three-way seal bag, and a standing pouch.

As the front and back films 11 and 12 constituting the pouch body 1, a plastic film or a laminate containing the plastic film can be preferably used. For example, a polyester film, a polyamide film, a polyethylene film, a polypropylene film, or a laminate thereof. Further, the layer structure may include a metal foil, a metal vapor deposition layer, or an inorganic vapor deposition layer such as an aluminum oxide vapor deposition layer. Further, it may be a bag in which the paper is the front and back films 11 and 12.

Further, although the contents built in the pouch body 1 are arbitrary, it is preferable that the contents are not used up at once, but a part of the contents is consumed and the rest is stored inside the pouch body 1. For example, powdery contents, granular contents, liquid contents and the like.

100, 100': Resealable pouch 1: Pouch body 11: Front side film 12: Back side film 1x: Opening line 1y: Contents outlet 2: Adhesive label 21: Adhesive sheet 211: Adhesive sheet base material 212: Adhesive layer 21x: Linear slit 21x1,21x2: Both ends of the linear slit 21y: Straight line connecting both ends 21x1,21x2 of the linear slit 21a: Outer peripheral area 21b: Tongue piece 21c: Area located between the straight line 21y and the outer peripheral area 21a 21d: Adhesive area 22: Easy-to-peelable sheet 22x: Linear slit 22y: End of easy-to-peelable sheet 22a: Of the area surrounded by the adhesive area 21d, the area 22b located on the convex side of the linear slit 22x. : Of the region surrounded by the adhesive region 21d, the region located on the opposite side of the convex portion of the linear slit 22x.

Claims (1)

In a pouch having a pouch body having a content outlet at an end and an adhesive label attached to the outer surface of the pouch body.
The adhesive label is composed of an adhesive sheet having adhesiveness and an easily peelable sheet partially adhered to the adhesive surface thereof.
By applying a release agent on the adhesive surface side of the easily peelable sheet, it is formed so as to be peelable from the adhesive sheet.
The adhesive sheet has a linear slit that is convex toward the content extraction port , and a region surrounded by a straight line connecting both ends of the linear slit and the linear slit is used as a tongue piece.
The easily peelable sheet is adhered to the inside and outside of the tongue piece across the linear slit, and the easily peelable sheet is substantially similar to the linear slit of the adhesive sheet in the region inside the tongue piece. A linear slit in the shape is provided, and the tongue piece and the easily peelable sheet can be easily peeled off between the linear slit of the easily peelable sheet and the tip of the tongue piece .
And, the peripheral edge of the adhesive label, the region easily separable sheet does not exist and a pressure-sensitive adhesive area to adhere to the pouch body,
The tongue piece is arranged so as to face the content outlet of the pouch body.
A resealable pouch characterized by that.

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