JP2006027721A - Refill bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refill bag having both pouring-port unsealing cutter line and a bag upper part unsealing cutter line in which the bag upper part cannot be opened widely only after the pouring port is opened through the pouring port opening cutter line so as not to cause the pouring port to be erroneously cut off in advance. <P>SOLUTION: This bag comprises a laminate including a base material layer, intermediate layer and thermal adhering resin layer, and has the thermal adhering part formed at its circumferential edge, wherein both sides of one side corner at the bag upper part are cut and recessed to cause the edge portions to be thermally adhered at the pouring port thermal adhering part 5 and a narrow pouring port is formed and there is provided a pouring port seal opening cutter line 6 for forming the pouring port. A recess 8 crossing with the lower part of the pouring port seal opening cutter line is formed at the pouring port thermal adhering part and the bag upper unsealing cutter line 7 extending laterally over an entire width of the bag passes through the intermediate layer in the laminated member so as to come into contact with the inner end of the recess. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The tip of the spout is cut off to form a spout, the contents stored in the refill bag are transferred to another container, and the contents remaining inside the bag are completely removed. The present invention relates to a bag for refilling that can open the upper part of the bag to make it easier to clean the inside, and prevents the upper part of the bag from being accidentally cut out first to form an opening.

Conventionally, as a refill bag containing fluid contents such as liquid and viscous body, for example, as described in JP-A-2004-43000, a laminated film is formed by heat-sealing into a bag shape In the pouch in which the outer corner is heat-sealed at the upper corner portion, the heat of at least the central portion of the pouch is the heat seal portion on both sides of the outer edge of the spout portion. The pouch is provided with a notch and a half-cut combination, and the pouch opening means includes a position where the tip of the spout is cut off and the corner of the pouch where the spout is provided. Refillable pouches (patented at two locations where the upper part or the upper part of the pouch including the spout part is cut out and the upper part of the pouch is greatly opened. Document 1 reference) is known.
JP 2004-43000 A

  However, in the case of the above-mentioned refilling pouch, the opening means removes the tip portion of the spout portion, and the pouch upper portion excluding the corner portion of the pouch where the spout portion is provided or the pouch upper portion including the spout portion. It is provided at two locations where the upper part of the pouch is opened by cutting and can be opened from either opening means, so the user accidentally cuts out the entire upper part of the pouch and opens the upper part of the pouch greatly. There is a risk that the opening means to be opened may be opened first, and in this case, it is very difficult to transfer the contents to the container.

  The object of the present invention is to cut and open the tip of the spout part, and after transferring the contents to the container, a large opening is formed at the top of the bag, so that the contents remaining in the bag can be removed. A refilling bag that can completely clean the inside of the takeout bag, and after cutting the tip of the spout part with the cutout line for opening the spout to form the spout part, the opening for opening the top of the bag Therefore, the present invention provides a refill bag that can prevent the upper portion of the bag from being accidentally cut out to form a large opening.

  A bag composed of a base material layer and a heat-adhesive resin layer or a laminate composed of a base material layer, an intermediate layer and a heat-adhesive resin layer. Narrow corners are cut out and the edges are thermally bonded by the spout heat bonding part to form a narrow spout part, and the spout opening cut-off line is provided at the spout part to cut the tip. In the refill bag, the refill bag has a configuration in which a cutout intersecting the cutout line for opening the spout is formed in the spout thermal bonding portion on the side end side.

  In the above-described refill bag, the notch has a triangular shape with one corner facing inward.

  In the above-described refill bag, the notch is configured to be a straight line facing the left-right direction of the bag.

  In the above-described refill bag, a bag upper opening tear line extending in the left-right direction over the entire width of the bag so as to contact the inner end of the notch has to penetrate at least one layer constituting the laminate. It is the structure formed in the depth within the range of the thickness of a layer.

  In the above-described refill bag, the film serving as the intermediate layer constituting the laminate is a uniaxially stretched film, and the stretching direction of the uniaxially stretched film is made to coincide with the cut-off direction.

  The refill bag of the present invention has a configuration in which the cutting start end of the cutting opening for opening the bag upper portion appears on the cut edge when the tip of the spout is cut and opened along the cutting opening for opening the spout, Without opening the spout part and transferring the contents to the container, the upper part of the bag cannot be cut laterally by the cutting line for opening the upper part of the bag to form a large opening. The upper portion of the bag is not cut off to form a large opening, so that it is not difficult to transfer the contents to the container.

  In the invention which concerns on Claim 2, 3, when the front-end | tip part of a spout part is cut and opened along the cut line for spout opening, it is along the cut line for opening a bag upper part in the location where the cut of the edge was cut. Since a V-shaped notch or an I-shaped notch for starting cutting appears, a large opening can be formed in the upper part of the cutting bag from the notch along the cutting line for opening the bag upper part.

  In the invention which concerns on Claim 4, after cutting off the front-end | tip part of a spout part and transferring the contents to a container, from the notch which appears in a notch location, the upper part of a bag is formed along the cutting line for opening an upper part of a bag. The opening can be formed by simply cutting in the lateral direction.

  In the invention which concerns on Claim 5, after cutting and opening the front-end | tip part of a spout part, and transferring the contents to a container, from the notch which appears in the notch location, the intermediate | middle layer of the laminated body which comprises a bag, The upper portion of the bag can be easily cut out along the stretching direction of the formed uniaxially stretched film to form an opening.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a plan view showing a first embodiment of a refill bag according to the present invention, FIG. 2 is an enlarged cross-sectional view taken along the line II in FIG. 1, and FIG. FIG. 4 is a plan view showing the upper portion of the bag of the second embodiment of the refill bag of the present invention, and FIG. 5 is a third embodiment of the refill bag of the present invention. FIG. 6 is a plan view showing the upper part of the bag in a state where the tip of the spout part of the third embodiment is cut off from the cut line for opening the spout, and 2 is a side end heat bonding part, 3 is a bottom heat bonding portion, 4 is a top heat bonding portion, 5 is a spout heat bonding portion, 6 is a spout opening cutting wire, 7 is a bag top opening cutting wire, 8, 8 ', 8 "are notches, 9 is The bulging portion, 10 is a laminate, 11 is a base material layer, 12 is an intermediate layer, and 13 is a thermoadhesive resin layer.

  The first embodiment of the refill bag of the present invention is as shown in FIG. 1 and FIG. 2, and uses a laminate 10 composed of a base material layer 11, an intermediate layer 12, and a heat-adhesive resin layer 13. A self-supporting bag manufactured by forming a side end thermal bonding portion 2, a bottom thermal bonding portion 3, and an upper end thermal bonding portion 4 by inserting a bottom material obtained by stacking two layers of front and back layers and folding the bottom material into two at the bottom. A narrow spout portion is formed by notching both sides of one corner of the upper portion of the bag and thermally bonding the cut edges by the spout heat bonding portion 5 and facing obliquely upward. The refill bag is formed with a bulging portion 9 projecting outwardly on the front and back laminates at the portion, and provided with an oblique outlet opening cutting line 6 for cutting off the tip portion at the outlet portion. In the side end side spout thermal bonding portion 5, a triangular notch 8 has one side of the triangle facing the horizontal direction. The outer corners of one side are arranged so as to be positioned on the cutout line 6 for opening the spout, and all the left and right sides of the bag are horizontally aligned so as to overlap one horizontal side of the triangular notch 8. It is the structure in which the cutting line 7 for opening a bag upper part was formed over the width.

  The cross-sectional shape of the part where the bag upper opening tear line 7 of the first embodiment is formed is as shown in FIG. 2, and the laminated body 10 composed of the base material layer 11, the intermediate layer 12, and the thermoadhesive resin layer 13. A bag upper opening tear line 7 that penetrates the intermediate layer 12 is formed. In the first embodiment, the laminated body 10 for forming a bag has a three-layer configuration including a base material layer 11, an intermediate layer 12, and a heat-adhesive resin layer 13. A two-layer structure composed of an adhesive resin layer may be used. In the case of a two-layer structure, the bag upper opening tear line 7 penetrates the base material layer of the laminate or the thickness of the base material layer from the outer surface of the base material layer. The depth is within the range.

  When the refill bag according to the first embodiment is cut obliquely from above to below along the spout opening opening tear line 6 and the tip of the spout portion is removed, as shown in FIG. A V-shaped notch for cutting the upper portion of the bag along the cut-off line 7 for opening the upper portion of the bag is formed at the location where the cutout 8 of the edge cut along the upper portion is formed. A large opening can be easily formed by cutting out the upper part of the bag along the tearing line 7 for opening. All the contents remaining in the bag can be taken out from the large opening formed in the upper part of the bag, and the inside of the bag can be cleaned cleanly after being taken out. In the case of the refill bag of the first embodiment, the tip of the spout portion is cut off along the cutout line 6 for opening the spout, and the top of the bag is cut off along the cutline 7 for opening the top of the bag unless the spout is formed. Since a large opening cannot be formed, it is possible to prevent the bag from being accidentally cut off along the bag upper opening tear line 7 before the spout is formed.

  The second embodiment of the refill bag of the present invention is as shown in FIG. 4 and is different from the first embodiment except that the shape of the notch 8 ′ formed in the spout heat bonding portion 5 on the side end side is different. Basically, the configuration is the same. The cutout 8 'of the second embodiment has a V-shape in the horizontal direction with the tip facing inward, the lower line of the V-shaped is horizontal, and the outer end of the lower line is the cutout line for opening the spout 6 is formed such that a horizontal bag upper opening tear line 7 is formed over the entire width in the left-right direction of the bag so as to overlap the lower line of the V-shape. Also in the second embodiment, the same effect as in the first embodiment can be obtained, and when the notch 8 ′ is formed in the refill bag, it is not extracted in a triangular shape as in the first embodiment. There is no problem of debris adhering to the bag, and the workability of the process of forming the notch 8 ′ is excellent.

  The third embodiment of the refill bag of the present invention is as shown in FIG. 5 and is different from the first embodiment except that the shape of the notch 8 ″ formed in the spout heat bonding portion 5 on the side end side is different. The cutout 8 ″ of the third embodiment is basically a straight line that faces in the horizontal direction, and is formed so as to intersect the cutout line 6 for opening the spout. Also in the third embodiment, the same effect as in the first embodiment can be obtained. In addition, when forming the notch 8 "in the refill bag, it is not extracted into a triangular shape as in the first embodiment, so there is no problem of the scraps adhering to the bag, and the shape of the notch 8" is linear. Therefore, the operation of forming the notch 8 'is extremely simple.

  When the refill bag of the third embodiment is cut obliquely from above to below along the spout opening opening cut line 6 and the tip of the spout portion is removed, as shown in FIG. An I-shaped notch for cutting the upper portion of the bag along the cut-off line 7 for opening the bag upper portion is formed at the place where the edge notch 8 "is cut along the I-shaped notch. The upper part of the bag can be easily opened by cutting the bag upper part along the cutting opening line 7 for opening the upper part of the bag, as in the first embodiment. The inside of the bag can be cleaned cleanly after all the contents remaining in the bag have been taken out, and the cut opening for opening the upper portion of the bag must be formed after the cut opening is formed along the opening 6 for opening the opening. Cut the top of the bag along 7 It can not be sealed, thereby preventing the note of along the bag top opening for tear line 7 by mistake before forming the outlet would cut the bag.

  In the first to third embodiments, the bag upper opening tear line 7 penetrating through the intermediate layer 12 of the three-layered laminate 10 composed of the base material layer 11, the intermediate layer 12, and the heat-adhesive resin layer 13 is formed. Although the configuration has been described, the laminate is a two-layer configuration consisting of a base material layer and a heat-adhesive resin layer, and the thickness of the base material layer is measured from the outer surface of the base material layer or through the base material layer. It can also be set as the structure which formed the cutting line for bag upper part opening with the depth within the range. Moreover, in 1st-3rd embodiment, it is good also as a structure which uses the uniaxially stretched film for the intermediate | middle layer of the laminated body of a 3 layer structure which consists of a base material layer, an intermediate | middle layer, and a thermoadhesive resin layer, and in that case It is not necessary to form a tear line for opening the upper part of the bag.

  As a method of forming the cutout line for opening the spout, a laser beam is applied to a predetermined region serving as a spout part of the bag in the process of making a refill bag using a laminate having a two-layer structure or a three-layer structure. The method of providing a half cut line from the base material layer surface of a laminated body is used by irradiating. When providing a half-cut line, not only a straight half-cut line but also an intermittent half-cut line such as a perforation can be provided, and such a half-cut line may be one, but the tearing direction It is also possible to provide a plurality of half-cut lines, such as one or two each, on both sides of the center half-cut line in a shape converging to the parallel or center half-cut line, assuming a case where the center shifts. Cut out the tip of the spout section along the cutout line for opening the spout and cut the top of the bag along the cutout line for opening the top of the bag, then use the laminate to refill the cutout. In the bag making process, the bag is formed by punching in a predetermined shape at a predetermined position of the spout thermal bonding portion on the side end side.

  The method of forming the tear-off line 7 for opening the upper part of the bag is a process for producing a laminate comprising a base material layer, an intermediate layer and a heat-adhesive resin layer, and after forming a picture layer by printing on the inner surface of the base material layer, urethane When laminating the intermediate layer on the pattern layer surface of the base material layer by dry lamination using a system adhesive, it is laminated while forming two continuous cuts at a predetermined position in the width direction of the film to be the intermediate layer, Then, a laminate is prepared by laminating a heat-adhesive resin layer on the film surface serving as an intermediate layer in which cuts are formed. The resulting laminate is folded in two parallel to the flow direction so as to overlap the cuts, and the bag is made in the same process as a normal self-supporting bag in a state where the cuts of the two front and back laminates are overlapped. Can be formed.

  As a base material layer constituting the laminate, biaxially stretched polyethylene terephthalate (PET), biaxially stretched nylon (ON), metal oxide deposited biaxially stretched polyethylene terephthalate (VMPET), metal oxide deposited biaxially stretched nylon ( VMON) can be used. As the intermediate layer, ON, VMPET, uniaxially stretched polypropylene (OPP), uniaxially stretched polyethylene (OPE), or the like can be used. As the heat-adhesive resin layer, low density polyethylene (LDPE), linear low density polyethylene (LLDPE), ethylene-α olefin copolymer polymerized using a metallocene catalyst, polypropylene (CPP), or the like can be used. Lamination of the base material layer, the intermediate layer, the thermoadhesive resin layer and the like is preferably performed by dry lamination (DL) using a urethane-based adhesive. Printing is performed on the inner surface of the substrate layer.

For example, ON / DL / LLDPE, ON / DL / OPP / DL / LLDPE, ON / DL / OPE / DL / LLDPE, PET / DL / ON / DL / LLDPE, ON / DL / ON / DL / LLDPE, ON / DL / VMPET / DL / LLDPE, VMPET / DL / ON / DL / LLDPE, and the like. The upper opening opening of the bag is formed so as to penetrate the underlined intermediate layer.

The top view which shows 1st Embodiment of the bag for refills of this invention. FIG. 2 is an enlarged sectional view taken along line II in FIG. 1. The top view which shows the bag upper part of the state which cut off the front-end | tip of the spout part of 1st Embodiment from the cutout line for spout opening. The top view which shows the bag upper part of 2nd Embodiment of the bag for refilling of this invention. The top view which shows the bag upper part of 3rd Embodiment of the refill bag of this invention. The top view which shows the bag upper part of the state which cut off the front-end | tip of the spout part of 3rd Embodiment from the cutout line for spout opening.

Explanation of symbols

2 Side end thermal bonding part 3 Bottom thermal bonding part 4 Upper end thermal bonding part 5 Outlet thermal bonding part 6 Outlet opening tearing line 7 Bag top opening tearing line 8, 8 ', 8 "Notch 9 Swelling part
10 Laminate
11 Base material layer
12 Middle layer
13 Thermal adhesive resin layer

Claims (5)

A bag composed of a base material layer and a heat-adhesive resin layer or a laminate composed of a base material layer, an intermediate layer and a heat-adhesive resin layer. Narrow corners are cut out and the edges are thermally bonded by the spout heat bonding part to form a narrow spout part, and the spout opening cut-off line is provided at the spout part to cut the tip. In the refill bag, the refill bag has a configuration in which a cutout that intersects the cutout line for opening the spout is formed in the spout thermal bonding portion on the side end side. The refill bag according to claim 1, wherein the notch has a triangular shape with one corner facing inward. The refill bag according to claim 1, wherein the notch has a linear shape facing the left-right direction of the bag. A cutting line for opening the bag upper portion extending in the left-right direction across the entire width of the bag so as to contact the inner end of the notch passes through the layer in at least one layer constituting the laminated body, or within the range of the thickness of the layer. The refill bag according to any one of claims 1 to 3, wherein the refill bag is configured to have a depth of 5 mm. The film as an intermediate layer constituting the laminate is a uniaxially stretched film, and the stretching direction of the uniaxially stretched film is made to coincide with the cutting direction. Refill bag as described.

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