JP4114831B2 - Refillable pouch - Google Patents

Description

【００８６】
表１の結果から明らかなように、開封用切れ目線を設けた詰め替え用パウチは、引き裂きが容易でガイドはずれがなく直線的に開封が可能となり、さらに落下衝撃、耐圧性に影響がないという効果を有することが明らかとなった。
【００８７】
（実施例３）
厚さ１２μｍの二軸延伸ポリエステルフィルムと、厚さ１５μｍのアルミ蒸着二軸延伸ナイロンを、２液硬化型のウレタン系接着剤を用いて（塗布量：約５ｇ／ｍ²）ドライラミネーション法により蒸着面を内側にして貼り合わせ、さらに二軸延伸ナイロン側に同じ接着剤を用いて厚さ１００μｍの線状低密度ポリエチレンを貼り合わせて、下記の構成の積層体を作成した。
【００８８】
二軸延伸ポリエステルフィルム１２μｍ／アルミ蒸着二軸延伸ナイロン１５μｍ／線状低密度ポリエチレン１００μｍ
この積層体を用いて実施例１と同様の詰め替え用パウチを作成した。この詰め替え用パウチに実施例１と同様にして同様の開封用切れ目線を形成した。
【００８９】
（実施例４）
実施例３で作成したものと同様の詰め替え用パウチを用い、実施例２と同様にして同様の開封用切れ目線を形成した。
【００９０】
（比較例２）
実施例３と同様の詰め替え用パウチを用い、レーザー加工による開封用切れ目線の形成を行わないものとした。
【００９１】
（実験例２）
上記実験例１と同様にして、実施例３、４および比較例２の詰め替え用パウチに対し、開封試験、落下衝撃試験、および耐圧強度試験を行った。結果を表２にまとめる。
【００９２】
【表２】

【００９３】
表２の結果から明らかなように、積層体が３層のフィルムからなる場合でも、上記実施例１および２に示す２層の場合と同様に開封用切れ目線を設けた詰め替え用パウチは、引き裂きが容易でガイドはずれがなく直線的に開封が可能となり、さらに落下衝撃、耐圧性に影響がないという効果を有することが明らかとなった。
【００９４】
なお、本発明は、上記実施形態に限定されるものではない。上記実施形態は、例示であり、本発明の特許請求の範囲に記載された技術的思想と実質的に同一な構成を有し、同様な作用効果を奏するものは、いかなるものであっても本発明の技術的範囲に包含される。
【００９５】
【発明の効果】
本発明は、ヒートシール性を有する樹脂フィルムおよび強度に優れた樹脂フィルムの少なくとも二層を有する積層体からなり、内部に流動性を有する内容物を密封包装するスタンディングパウチ形式の詰め替え用パウチであって、このパウチの上部コーナー部に、外周、即ち、先端部、両側部、両肩部がヒートシールされてなる斜め上方に向く形状の注出口部が設けられ、この注出口部の少なくとも一方の側部に切欠き部を設けることにより注出口部の先端部側より幅の狭い切断部が設けられ、この切断部の表裏の各積層体には、少なくとも一本の開封用切れ目線が前記積層体を貫通しないように設けられている詰め替え用パウチである。
【００９６】
したがって、上記切断部の表裏の各積層体に少なくとも一本の開封用切れ目線を上記積層体を貫通することなく設けることにより、はさみなどを用いずに容易にこの開封用切れ目線に沿って切り取ることができる。したがって、ボトルなどの他の容器に内容物を移し替える際に、注出口部を手で容易に切り取ることが可能であり、かつ切り取った後の注出口が平らとなり、詰め替えに際して内容物が漏れることがない。さらに、開封用切れ目線が積層体を貫通するものではないので、内容物が漏れることもなく、詰め替え用パウチ自体の落下衝撃性や耐圧性を低下させるものではないという効果を奏するものである。
【図面の簡単な説明】
【図１】本発明の詰め替え用パウチの一例を示す平面図である。
【図２】本発明の詰め替え用パウチの他の例を示す平面図である。
【図３】図１に示す詰め替え用パウチの積層体に設けられた膨らみ部の断面を示すものであり、（１）がＡ−Ａ線断面図、（２）がＢ−Ｂ線断面図を示す。また、（１）および（２）のいずれにおいても（イ）が積層体の一方にのみ膨らみ部が形成された状態を示し、（ロ）が表裏両方の積層体に膨らみ部が設けられた状態を示すものである。
【符号の説明】
１ … 底部、 ２ … 底部ヒートシール部、
３ … 胴部ヒートシール部、 ４ … 上部ヒートシール部、
５ … 積層体、 ６ … 注出口部、
７ａ、７ｂ … 切欠き部、 ８ … 切断部、
９ … 開封用切れ目線、 １０ … 収納部、
１１ … 先端部、 １２ … 側部、 １３ … 肩部、
１４ … ノッチ、 １００ … 詰め替え用パウチ、
Ｃ … 膨らみ部、 Ｃ₁ … 注出口部膨らみ部、
Ｃ₂ … 中間部膨らみ部、 Ｃ₃ … 下部の膨らみ部。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a refillable pouch for hermetically wrapping a fluid content such as a liquid and transferring the content to another container during use.
[0002]
[Prior art]
Conventionally, as a refilling pouch for hermetically wrapping contents having fluidity such as liquid, a standing pouch that is self-supporting and has some features as a three-dimensional container has been mainly employed. In such standing pouches, the opening is formed by cutting a part such as a corner, not the entire top of the pouch, so that the contents can be safely transferred to another container without spilling outside when opened. A separate spout made of a plastic molding or the like was attached to a part of the upper part of the pouch by thermal bonding.
[0003]
However, although the method of forming the opening part of the pouch by cutting out a part such as a corner part instead of the whole upper part of the pouch is simple, the direction in which the contents are poured out is difficult to stabilize, and the container to be transferred is particularly caliber such as a bottle. In the case of a small container, the opening of the pouch is likely to be displaced from the mouth of the container during pouring, and the contents may be spilled outside, causing problems in terms of ease of transfer and safety. .
[0004]
In addition, the method of attaching a separate spout made of plastic molding to a part of the upper part of the pouch increases the number of manufacturing processes and the spout itself, and the pouch attached with the spout increases in thickness. Therefore, storage and transportation costs are also high, and when filling the contents, for example, the number of empty pouches loaded in the feeder section of the filling machine is greatly reduced, so the operator can supply empty pouches in a complicated manner. There is a problem that the cost is increased as a whole and the complexity of the process and work is increased.
[0005]
In order to solve such a problem, a standing pouch has been proposed in which a spout portion having a partially narrowed width is provided at the corner portion at the top of the pouch. Such standing pouches can be easily opened by simply cutting out the spout and can be refilled with one hand because of its good shape retention during pouring. On the other hand, it has the advantage that it can be refilled safely and easily.
[0006]
[Problems to be solved by the invention]
However, since such a standing pouch is usually made in accordance with the diameter of the bottle into which the contents are put, there is a problem that depending on the size, the spout portion is difficult to pinch and is difficult to open. In addition, when the tip of the spout portion is cut off, there is a problem that the contents are scattered if it is forcibly torn.
[0007]
Furthermore, when it tears forcibly in this way, the tip of the spout after being cut out may not be flat. When the contents filled in the pouch are transferred to another container such as a bottle, the spout is usually placed at the mouth of the container or inserted into the container. Therefore, when the tip of the spout is not flat, there arises a problem that the content leaks out when transferring.
[0008]
The present invention has been made in view of the above problems, and when transferring contents from a refilling pouch (standing pouch) to another container such as a bottle, the spout is easily cut off without using scissors or the like. The main object of the present invention is to provide a refillable pouch that can be used and that the spout after cutting is flattened so that the contents do not leak during refilling.
[0009]
[Means for Solving the Problems]
The present invention is the standing pouch type according to claim 1, which is composed of a laminate having at least two layers of a heat-sealable resin film and a resin film having excellent strength, wherein the contents having fluidity are sealed and packaged therein. A pouch for refilling, and a pour-out portion having a shape directed upward obliquely formed by heat-sealing the outer periphery, that is, the front end portion, both side portions, and both shoulder portions is provided at the upper corner portion of the pouch. By providing a notch on at least one side of the part, a cut part narrower than the tip part side of the spout part is provided, and each laminate on the front and back of this cut part has at least one opening The above object is achieved by a refillable pouch characterized in that a cut line is provided so as not to penetrate the laminated body.
[0010]
In this way, by providing at least one opening cut line on each laminate on the front and back of the cutting part without penetrating the laminate, it is possible to easily make this opening cut line without using scissors or the like. Can be cut along. Therefore, when transferring the contents to another container such as a bottle, it is possible to easily cut the cut portion of the spout portion by hand, and the spout after the cut becomes flat, so that the content can be changed when refilling. Will not leak. Further, since the opening cut line does not penetrate the laminated body, the contents do not leak, and the drop impact property and pressure resistance of the refilling pouch itself are not lowered.
[0011]
In addition, the pouch is provided with a spout portion in the upper corner of the pouch that has an outer periphery, that is, a tip portion, both side portions, and shoulder portions that are heat-sealed, and has a shape facing obliquely upward, and at least one side portion of the spout portion. By forming a notch in the cut part that is narrower than the tip part side of the spout part, a wider tip part is formed on the tip side than the cutting part. It can be easily cut out because it can be grasped and cut out.
[0012]
In this case, as described in claim 2, it is preferable that the opening cut line is provided on a resin film having excellent strength.
[0013]
Thus, the cutting line for opening is provided in the resin film excellent in strength, so that the film having excellent strength that requires the most force when cutting the cut portion is cut without applying much force. Therefore, there is no inconvenience that the contents are scattered during cutting.
[0014]
Furthermore, it is preferable that the opening cut line is provided by laser processing.
[0015]
This is because the cut line can be easily and accurately formed by providing the opening cut line by laser processing. In addition, by selecting the type of laser, it becomes possible to form an opening break line only in the outer layer of the laminate, so that an opening break line that does not penetrate the laminate is easily formed. Can do.
[0016]
Moreover, as described in claim 4, it is preferable that at least two or more opening break lines are provided in each of the front and back laminates. In this way, by providing at least two opening break lines on the front and back laminates, even if the tearing direction deviates from the center, the cutting is taken over by the adjacent opening break line, so the tear direction can be changed. This is because it can be further stabilized and stable tearability can be maintained.
[0017]
And the invention described in Claim 5 of this invention is for opening the spout formed naturally when cut | disconnecting by the said cut line for opening in the laminated body of the said spout part at least one side. It is preferable that a bulge is formed.
[0018]
By forming the bulging portion at the spout and the spout portion in this way, the spout is automatically (naturally) opened by the bulging portion simply by cutting the cut portion and providing the spout. Therefore, it can be cut easily and flatly along the opening cut line, and the spout is automatically opened after cutting, so that it is possible to reduce the trouble of transferring the contents to a bottle or the like.
[0019]
Furthermore, as described in claim 6 of the present invention, it is preferable that the bulging portion extends from the spout portion to a storage portion for storing and packaging the contents.
[0020]
In this way, the bulging part extends from the spout part to the storage part, and after opening, the contents can smoothly flow along the bulging part to the spout, and the contents can be safely and easily reached the end. Things can be transferred to containers such as bottles.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described, but the present invention is not limited thereto.
[0022]
The refill pouch of the present invention is a standing pouch type comprising a laminate having at least two layers of a heat-sealable resin film and a resin film having excellent strength and hermetically wrapping contents having fluidity inside. In the upper corner of this pouch, an outer periphery, that is, a tip part, both side parts, and a shoulder part with both shoulders heat-sealed and provided with an obliquely upward shape, at least one of the spout parts is provided. A cutout is provided on the side.
[0023]
The shape of the refilling pouch according to the present invention will be specifically described with reference to FIG.
[0024]
The refill pouch 100 is formed by making a main body portion into a standing pouch form. The bottom 1 of the refillable pouch 100 is formed in a gusset form in which the film is folded inward according to a conventional method, and semicircular cutouts are provided in the vicinity of both lower ends of the film folded inward. It is formed by heat sealing at the bottom heat seal portion 2 of the ship bottom shape. The body portion of the refillable pouch 100 is formed by heat-sealing the edge portions on both sides of the laminated body 5 on the front and back surfaces with the body heat seal portion 3.
[0025]
The pouch 100 is provided with a spout portion 6 at an upper corner of the pouch 100 so as to protrude obliquely upward by trimming the notch portions 7a and 7b on both sides. The side portion 12 and the shoulder portion 13 are heat-sealed.
[0026]
A feature of the present invention is that by forming notches 7a and 7b on both side portions 12 of the spout portion 6, a cut portion 8 narrower than the tip portion 11 of the spout portion 6 is formed. In each of the front and back laminates, opening cut lines 9 are respectively formed. In addition, in the example of FIG. 1, the notch part is provided in the both sides of the spout part, However, In this invention, it is not limited to this, A notch part is provided in any one side part. It may be.
[0027]
In the present invention, the opening cut line should not be formed through all the layers constituting the laminate. This is because when formed in such a manner, the fluid content leaks to the outside. Therefore, in the present invention, it is necessary to have a layer in which at least one opening cut line is not formed in the laminate, or to form an opening cut line in each layer so that the opening cut line does not penetrate.
[0028]
Such a break line for opening may be provided when each layer of the laminate is in a single state, may be provided after laminating each layer to form a laminate, or even after being formed as a refillable pouch. Although it may be provided, it is preferable to provide the pouch for refilling after considering the time and effort in the process.
[0029]
In the present invention, it is sufficient that at least one opening cut line is formed on each of the front and back sides, but two or more are preferably formed on the front and back sides for the following reasons. In other words, if two or more opening cut lines are formed on the front and back, even if the opening cut lines on the front and back sides are misaligned, the tearability does not deteriorate, and the tearing direction should start from the center. This is because even when there is a shift, if there are two or more, there is a high possibility that the cut will be taken over by the adjacent opening cut line, and the direction of tearing can be further stabilized.
[0030]
For example, as shown in FIG. 1, a notch 14 or the like may be formed in the opening cut line so that cutting can be easily started.
[0031]
In the present invention, it is preferable that one or more opening cut lines are provided on both sides of a single opening cut line, and particularly preferably, notches 14 are formed as shown in FIG. For example, two opening cut lines are provided on both sides of the opening cut line 9, and a total of five opening cut lines 9 are provided. In addition, the width between the opening cut lines when providing a plurality of opening cut lines is not particularly limited as long as it is a width that can be easily cut, but is within a range of 0.2 mm to 1.5 mm. It is preferable that
[0032]
The opening cut line may be a continuous cut line or a discontinuous perforated cut line. Moreover, the width | variety of the break line for opening is formed in the range of 20-300 micrometers, Preferably it is 20-200 micrometers. If it is within this range, the physical properties of the film will not be reduced, the drop impact resistance and pressure resistance of the refill pouch will not be affected, and it will fully serve as a cutting guide when tearing. Other layers with no cut line formed (if the opening cut line is formed on a resin film with excellent outer layer strength), the inner layer heat sealability is excellent) and the tearability is reduced. It is because it does not do.
[0033]
In the present invention, it is only necessary that the opening break line is provided without penetrating the laminate, but it is preferably formed in a resin film excellent in strength that is usually disposed in the outer layer. This is because, when cutting at the time of opening, it is most difficult to cut a resin film excellent in strength, and it is possible to cut and open easily by forming a cut line for opening on this film. Because it becomes. Moreover, it is because the sealing property of the contents can be maintained by another film such as a resin film having an inner heat-sealing property by providing a cut line for opening only on the resin film having excellent strength disposed in the outer layer. .
[0034]
As a method for forming such an opening cut line, various conventionally used methods such as a needle punch method and an embossing roll method can be used, but in the present invention, they are formed by laser processing. Is preferred. Examples of the laser used for such laser processing include an excimer laser, a YAG laser, a semiconductor laser, a He—Ne laser, and a carbon dioxide gas laser.
[0035]
The reason why such a laser processing method is preferred is that the laser processing can easily and accurately form the opening cut line. Moreover, it can be said that it is preferable to form the opening cut line by laser processing from the point that the opening cut line can be easily formed only in one layer by selecting the laser beam.
[0036]
That is, for example, when a carbon dioxide laser is used and the wavelength of the carbon dioxide laser light is 10.6 microns, this laser light is selectively absorbed by the nylon film, and linear low density polyethylene or ethylene-vinyl acetate copolymer is used. The film mainly composed of coalescence is almost transmitted. Therefore, for example, a film mainly composed of linear low-density polyethylene or ethylene-vinyl acetate copolymer is used as a resin film having heat sealability, and a biaxially stretched nylon film is used as a resin film having excellent strength to form a laminate. If laser processing is performed using the carbon dioxide gas laser having a wavelength of 10.6 microns, it is possible to form a tear line for opening only in the biaxially stretched nylon film.
[0037]
Thus, in the present invention, when forming the opening cut line, it is preferably formed using laser processing, particularly preferably using a carbon dioxide laser, and more preferably having a wavelength of 10 Processing is performed using a carbon dioxide laser beam of 6 microns.
[0038]
When forming the opening cut line using laser light, it is necessary to process only at the spout part, and this spout part may be inclined upward, and more than one laser processing may be required. Therefore, it is preferable to perform processing by scanning the laser beam. This laser light scanning is to adjust the optical path by irradiating a plurality of mirrors with laser light, the mirror is driven by external control, and the laser light is arbitrarily scanned in the XY axis direction. It is preferable to carry out by using.
[0039]
When scanning with laser light, the output of the laser and the processing speed (scanning speed) can be set arbitrarily. Further, the focus of the laser beam is adjusted so as to be held on the surface of the refilling pouch during scanning. As will be described later, when the bulge is provided in the laminate, focus adjustment is not performed on the bulge. Therefore, when the bulging part is formed, it is preferable to use a condensing lens with a long focal length.
[0040]
In the refilling pouch of the present invention, for example, as shown in FIG. 1, it is formed when the laminated body 5 on at least one side of the spout part 6 is cut at the opening cut line 9 of the cutting part 8. It is preferable that a bulge C for naturally opening the spout is formed.
[0041]
Thus, by providing the swelling part C in at least one laminated body of the spout part 6, the spout naturally opens when the opening cut line 9 of the cutting part 8 is cut, that is, has a natural opening property. For this reason, there is no need to ensure the opening of the spout when the sealed contents are transferred to a bottle or the like.
[0042]
Moreover, it is preferable that this bulging part C is extended from the spout part 6 to the storage part 10 in which the contents are sealed and stored.
[0043]
Thus, since the bulging part C is extended from the spout part 6 to the storage part 10, after opening, the contents can smoothly flow to the spout along the bulge part C, and it is safe to the end. The contents can be easily transferred to a container such as a bottle.
[0044]
The planar shape of the bulging portion C is not particularly limited as long as it is a shape extending from the spout portion 6 to the storage portion 10. For example, as shown in FIG. 1, the bulging portion C faces the spout portion 6. The pouch bottom may have a shape extending a predetermined length toward one corner of the pouch bottom, and then extending directly downward toward the bottom 1, and the bottom 1 facing the spout 6 as shown in FIG. After extending toward one corner, the shape may extend toward the upper corner side where the spout portion 6 is not provided.
[0045]
As shown in FIG. 1, the bulging portion C has a large width and height at the spout portion 6 (C ₁ ), The width and height gradually decrease diagonally downward (C ₂ ) So that the width and height are small and constant in the portion extending directly downward toward the bottom 1 (C _Three ) Is formed. Also in the example shown in FIG. 2, the width and the height are similarly reduced from the spout portion 6 toward the storage portion 10. In this way, by reducing the width and height of the bulging portion C from the spout portion 6 toward the storage portion 10, that is, increasing the width and height toward the spout portion, the fluidity stored in the storage portion 10 is increased. The contents are smoothly guided to the spout of the spout section 6.
[0046]
3 shows a cross-sectional view of the bulging portion C shown in FIG. 1, wherein (1) is a cross-sectional view taken along line AA, and (2) is a cross-sectional view taken along line BB. In the present invention, as shown in FIGS. 3 (1) (a) and (2) (a), a bulging portion C may be formed on at least one side of the laminate, and (1) (b) ) And (2) (b), the bulging portion C may be provided in both the front and back laminates.
[0047]
Moreover, although the cross-sectional shape of this bulging part is not specifically limited, it is preferable that it is a trapezoid as shown in FIG. 3 from the point of strong resistance to compression and excellent shape retention.
[0048]
The bulge height of the bulge portion is not particularly limited, but is preferably about 1 to 7 mm and more preferably about 2 to 5 mm in the spout portion. When the height is less than 1 mm, the effect on the natural opening becomes thin, and when it exceeds 7 mm, the processing itself becomes difficult and the spout part becomes bulky. This is not preferable because the suitability for loading is reduced. Further, the bulge height of the bulge portion can be lowered to about 0.8 to 2 mm as it extends toward the storage portion 10 side.
[0049]
Furthermore, the width at the spout portion of the bulging portion is not particularly limited as long as it is smaller than the width of the mouth of the bottle for transferring the contents, but it is usually about 5 mm to 20 mm.
[0050]
Such a bulging portion can be formed with high productivity by an embossing device or the like.
[0051]
Such a refillable pouch of the present invention is formed from a laminate having at least two layers of a resin film having heat sealing properties and a resin film having excellent strength as described above.
[0052]
Hereinafter, this laminate will be described.
[0053]
The heat-sealable resin film used for this laminate is usually disposed on the inner layer side and is heat-sealed to form a refillable pouch. In the present invention, any resin film can be used as such a resin film as long as it is a resin film that can be melted by heat and fused to each other. Specific examples of such resin films include low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, and ethylene-ethyl acrylate copolymer. And a film mainly composed of one or more resins such as ethylene-acrylic acid copolymer, ethylene-propylene copolymer, methylpentene polymer, and polybutene.
[0054]
In the present invention, a film mainly composed of linear low density polyethylene or ethylene-vinyl acetate copolymer is particularly preferable. This is because these films are sticky, have little propagation of breakage, and are excellent in impact resistance. Moreover, it is preferable to add an ethylene butadiene copolymer from the point which tearability improves and contributes to easy openability.
[0055]
The thickness of these resins is preferably in the range of 10 to 300 μm, particularly preferably in the range of 20 to 150 μm. This is because heat fusion can be performed without any problem within this range, and there is no problem in terms of cost.
[0056]
On the other hand, the resin film excellent in strength used in the present invention is usually used on the outer layer side of the laminate. Since this resin film is a basic material constituting the refill pouch of the present invention, it is preferable to use a film having excellent properties in mechanical, physical, chemical properties, and the like.
[0057]
Specific examples of such resin films include resin films made of polyester resins, polyamide resins, polyaramid resins, polypropylene resins, polycarbonate resins, polyacetal resins, fluorine resins, and the like. May be an unstretched film, a film stretched uniaxially or biaxially, and the like.
[0058]
In the present invention, it is preferable to use a biaxially stretched polyamide film excellent in rigidity, flex resistance, impact resistance, cold resistance, heat resistance, chemical resistance, abrasion resistance, puncture resistance, and the like. Moreover, it can be said that this resin is preferable also from the point which has the absorptivity in the wavelength of a carbon dioxide laser as mentioned above, and is rich in laser workability.
[0059]
Examples of such a biaxially stretched polyamide film include nylon films such as nylon-6, nylon-66, nylon-11, nylon-12, and the like, and these non-coated biaxially stretched films and polyvinylidene chloride coats. A biaxially stretched film or the like can be used.
[0060]
The thickness of the resin film excellent in strength used in the present invention may be a minimum thickness that can maintain strength and rigidity, and is specifically in the range of 10 to 50 μm, preferably 10 to 30 μm. Is within the range.
[0061]
The laminate used in the present invention is not limited to the above two films, and may be composed of three or more kinds of films if necessary.
[0062]
For example, it is good also as a laminated body which consists of three layers by arrange | positioning the film which has barrier property between the film which has the said heat-sealability, and the film excellent in intensity | strength.
[0063]
Examples of such a film having a barrier property include a film that blocks light such as sunlight, and a film that does not transmit gas such as water vapor, water, and oxygen. Such a film may be a simple substance or a combination of two or more kinds of substrates.
[0064]
Specifically, an aluminum foil having a light shielding property and a barrier property or a resin film having a vapor deposition film thereof, a resin film having a vapor deposition film of an inorganic oxide such as silicon oxide or aluminum oxide having a barrier property, water vapor, water, etc. Low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, polypropylene, ethylene-propylene copolymer resin films, etc., polyvinylidene chloride having gas barrier properties, polyvinyl alcohol Resin film such as saponified ethylene-vinyl acetate copolymer, various colored resin films having light-shielding properties obtained by kneading a resin with a colorant such as a pigment, and other desired additives. Can do.
[0065]
The thickness of the film having such a barrier property is preferably in the range of 5 to 300 μm, particularly preferably in the range of 10 to 100 μm. Moreover, when this film is aluminum foil, it is preferable to exist in the range of 5-30 micrometers. Furthermore, the thickness of the deposited film used for such a film is preferably 1000 to 2000 angstroms.
[0066]
The laminated body used in the present invention can be produced by a method of laminating a normal packaging material, for example, a wet lamination method, an extrusion lamination method, a T-die coextrusion molding method, a coextrusion lamination method, or the like.
[0067]
Typical examples of the configuration of such a laminate are listed below.
[0068]
(1) ON film / adhesive / L / LDPE film (sealant layer)
(2) ON film / adhesive / uniaxially stretched HDPE film / adhesive / L / LDPE film (sealant layer)
(3) ON film / adhesive / uniaxially stretched PP film / adhesive / L / LDPE film (sealant layer)
(4) ON film / adhesive / uniaxially stretched PP film / adhesive / aluminum foil / adhesive / L / LDPE film (sealant layer)
(5) ON film (silica vapor deposition layer) / adhesive / uniaxially stretched HDPE film / adhesive / L / LDPE film (sealant layer)
(6) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L / LDPE layer) (sealant layer is L / LDPE layer)
(7) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / LDPE layer) / adhesive / L / LDPE film (sealant layer)
(8) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / L / LDPE film (sealant layer)
(9) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / CPP film (sealant layer)
(10) PET film / adhesive / ON film / adhesive / aluminum foil / adhesive / L / LDPE film (sealant layer)
(11) PET film / adhesive / ON film / adhesive / aluminum foil / adhesive / CPP film (sealant layer)
(12) PET film / adhesive / EVOH film / adhesive / ON film / adhesive / CPP film (sealant layer)
These are merely preferred specific examples of the laminate of the present invention, and the present invention is not limited thereto.
[0069]
In the above, ON film is biaxially stretched nylon film, L / LDPE is linear low density polyethylene, HDPE is high density polyethylene, LDPE is low density polyethylene, PP film is polypropylene, PET film is biaxially stretched polyethylene terephthalate film, The EVOH film represents an ethylene-vinyl acetate copolymer saponified film, and the CPP film represents an unstretched polypropylene film.
[0070]
The anchor coat is a kind of primer coat that is pre-coated on the base film side in order to improve adhesion when the resin is laminated by extrusion coating.
[0071]
Next, the manufacturing method of the refilling pouch of this invention using such a laminated body is demonstrated.
[0072]
Since the refillable pouch of the present invention has a main body portion of a standing pouch type, it can be basically manufactured using a conventional pouch-making machine for standing pouches. However, a normal standing pouch is: (1) a point where a spout is provided at the corner of the top of the pouch, (2) a point where notches are provided on both sides of the spout, and (3) The difference is that a cut line for opening is provided in the cut portion, and (4) a bulge portion is formed if necessary.
[0073]
Therefore, devices corresponding to these, that is, trimming devices for providing spout portions, notches, etc., addition or change of heat seal devices, laser light irradiation devices for providing opening cut lines, if necessary An embossing device or the like for forming the bulging portion can be incorporated into a standing pouch bag making machine, or a part of the embossing device can be prepared as a separate line and can be easily manufactured by using such a device.
[0074]
【Example】
Hereinafter, the present invention will be described with reference to examples and comparative examples.
[0075]
(Example 1)
A biaxially stretched nylon film having a thickness of 25 μm and a linear low density polyethylene having a thickness of 130 μm are coated with a two-component curing type urethane adhesive (amount applied: about 5 g / m). ² ) Bonding was performed by a dry lamination method to prepare a laminate composed of two layers.
[0076]
Next, using this laminate, a refillable pouch having a spout portion 6 as shown in FIG. 1 and having a peripheral end portion heat-sealed (width 130 mm, height 235 mm) was prepared.
[0077]
At the optimum opening position of the cutting part 8 of this refilling pouch, a carbon dioxide gas laser with an oscillation wavelength of 10.6 μm (manufactured by Coherent, USA, DIAMOND G-50, rated output 50 W) and a galvano scanning module (manufactured by General Scanning, USA) use,
Oscillation frequency: 3000Hz
DUTY: 30%
Scanning speed: 3000mm / sec
Under these conditions, by performing laser processing on each of the front and back surfaces, five perforated straight opening lines 9 were formed at intervals of 1 mm.
[0078]
(Example 2)
Using the same refilling pouch as in Example 1, only the laser device and processing conditions in Example 1 were changed to the optimum opening position of the cutting part of this refilling pouch, and a continuous linear straight opening line was 1 mm. Five were formed at intervals. The laser device used was manufactured by US-based Shinrad Co., Ltd. with a rated output of 25 W, and the changed conditions are as follows.
[0079]
Scanning speed: 3000mm / sec
(Comparative Example 1)
The refilling pouch similar to that of Example 1 was used, and the opening cut line was not formed by laser processing.
[0080]
(Experimental example 1)
An I-shaped notch was provided at the opening position of the refill pouches of Examples 1 and 2 and Comparative Example 1, and after filling with 450 ml of water as the contents and sealing hermetically, the following experiments were conducted.
[0081]
1. Opening test
About each 10 bags of the refill pouches of Examples 1 and 2 and Comparative Example 1, the bag was opened using the opening cut line, and the number of cuts (spout ports) at that time shifted from the opening cut line was measured. .
[0082]
2. Drop impact test
Each of the 10 refillable pouches of Examples 1 and 2 and Comparative Example 1 was dropped 20 times vertically from the height of 120 cm onto the concrete surface to determine whether the pouch was torn or not.
[0083]
3. Pressure strength test
For each of the 10 refillable pouches of Examples 1 and 2 and Comparative Example 1, it was measured whether or not the bag was torn when a 50 kgf load was applied for 10 minutes.
[0084]
The results of each experimental example are summarized in Table 1.
[0085]
[Table 1]

[0086]
As is clear from the results in Table 1, the refillable pouch provided with the opening cut line is easy to tear, can be opened linearly without slipping off the guide, and has no effect on drop impact and pressure resistance. It became clear to have.
[0087]
(Example 3)
A biaxially stretched polyester film with a thickness of 12 μm and an aluminum-deposited biaxially stretched nylon with a thickness of 15 μm using a two-component curing type urethane adhesive (amount applied: about 5 g / m ² ) Bonded with the vapor deposition surface inside by dry lamination method, and further bonded linear low density polyethylene with a thickness of 100 μm on the biaxially stretched nylon side using the same adhesive to create a laminate with the following composition .
[0088]
Biaxially stretched polyester film 12 μm / aluminum-deposited biaxially stretched nylon 15 μm / linear low density polyethylene 100 μm
Using this laminate, a refillable pouch similar to that in Example 1 was prepared. A similar opening cut line was formed on the refill pouch in the same manner as in Example 1.
[0089]
Example 4
Using the same refillable pouch as that prepared in Example 3, the same opening cut line was formed as in Example 2.
[0090]
(Comparative Example 2)
A refilling pouch similar to that in Example 3 was used, and the opening cut line was not formed by laser processing.
[0091]
(Experimental example 2)
In the same manner as in Experimental Example 1, the refilling pouches of Examples 3 and 4 and Comparative Example 2 were subjected to an opening test, a drop impact test, and a pressure strength test. The results are summarized in Table 2.
[0092]
[Table 2]

[0093]
As is clear from the results in Table 2, even when the laminate is composed of three layers of film, the refillable pouch provided with the opening cut line as in the case of the two layers shown in Examples 1 and 2 is torn. However, it is clear that the guide can be opened linearly without slipping out of the guide, and further has the effect of not affecting the drop impact and pressure resistance.
[0094]
The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the present invention has substantially the same configuration as the technical idea described in the claims of the present invention, and any device that exhibits the same function and effect is the present invention. It is included in the technical scope of the invention.
[0095]
【The invention's effect】
The present invention is a refillable pouch of a standing pouch type comprising a laminate having at least two layers of a heat-sealable resin film and a resin film having excellent strength, in which the contents having fluidity are sealed and packaged. In the upper corner of the pouch, an outer periphery, that is, a tip portion, both side portions, and a shoulder portion, both of which are heat-sealed and provided with an obliquely upward shape, is provided, and at least one of the spout portions is provided. By providing a cutout portion on the side portion, a cut portion having a narrower width than the tip end side of the spout portion is provided, and at least one opening cut line is stacked on each laminate on the front and back sides of the cut portion. It is a refillable pouch provided so as not to penetrate the body.
[0096]
Therefore, by providing at least one opening cut line on each of the laminates on the front and back sides of the cut portion without penetrating the laminate, it is easily cut along the opening cut line without using scissors or the like. be able to. Therefore, when transferring the contents to another container such as a bottle, the spout can be easily cut by hand, and the spout after the cut is flat, and the contents leak when refilling. There is no. Further, since the opening cut line does not penetrate the laminate, the contents do not leak, and the drop impact property and pressure resistance of the refilling pouch itself are not reduced.
[Brief description of the drawings]
FIG. 1 is a plan view showing an example of a refillable pouch according to the present invention.
FIG. 2 is a plan view showing another example of a refillable pouch according to the present invention.
3 is a cross-sectional view of a bulge portion provided in the stacked body of the refillable pouch shown in FIG. 1, wherein (1) is a cross-sectional view taken along line AA, and (2) is a cross-sectional view taken along line BB. Show. In both (1) and (2), (A) shows a state in which a bulge is formed only on one side of the laminate, and (B) shows a state in which the bulge is provided on both the front and back laminates. Is shown.
[Explanation of symbols]
1 ... bottom part, 2 ... bottom heat seal part,
3 ... body heat seal part, 4 ... upper heat seal part,
5 ... Laminated body, 6 ... Outlet part,
7a, 7b ... notch, 8 ... cut,
9 ... opening line for opening, 10 ... storage part,
11 ... tip part, 12 ... side part, 13 ... shoulder part,
14 ... Notch, 100 ... Refillable pouch,
C ... bulge part, C ₁ … Spout bulge,
C ₂ ... middle bulge, C _Three … The bottom bulge.

Claims (4)

A standing pouch-type refill pouch comprising a laminate having at least two layers of a resin film having heat-sealability and a resin film having excellent strength, wherein the contents having fluidity are sealed and packaged therein,
In the upper corner portion of this pouch, there is provided a spout portion having an outer periphery, i.e., a tip portion, both side portions, both shoulder portions, and a shape facing obliquely upward formed by heat sealing,
By providing a notch on at least one side of this spout part, a cut part having a narrower width than the tip part side of the spout part is provided,
Each laminated body on the front and back of this cut part is provided without at least one opening cut line penetrating the laminated body ,
Of the laminates on the front and back of the spout part, at least one of the laminates is formed with a bulge part for naturally opening the spout formed when cut along the opening cut line. ,
The bulge portion has a shape that extends a predetermined length from the extraction port portion toward one corner portion of the bottom portion of the refill pouch, and then extends directly downward toward the bottom portion, and the width of the bulge portion The refillable pouch is characterized in that the height is the largest in the vicinity of the extraction port and decreases as it extends from there to the bottom .   The refilling pouch according to claim 1, wherein the opening cut line is provided on a resin film having excellent strength.   The refilling pouch according to claim 1 or 2, wherein the opening cut line is provided by laser processing.   The refilling pouch according to any one of claims 1 to 3, wherein at least two opening cut lines are provided on each of the front and back laminates.

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