JP2000203603A - Small bag for liquid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe, excellently suitably usable small bag for liquid being a small bag for liquid to seal liquid seasonings and the like having advantages of no fingers smeared by a content during the operation of opening, and no content run out therefrom even in pinching the center of the opened small bag, and also no content leaked even in a state of the small bag laid down during the period of pouring operation. SOLUTION: A small bag 100 for liquid is made into a bag shape by, e.g. a four side-sealed fashion, and after a liquid content is filled therein, its upper end opened is sealed, at this time, a content housing portion is formed by performing heat seal through a seal pattern that can execute both heat seals in a partition seal portion 6 made into a separation chamber structure through which a part thereof communicates and an upper seat seal part 4 for forming a limited breadth pour path 5 and sealing the upper portion thereof, and further this is formed by providing a notch 7 at an opening position of the pour path 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid sachet, and more particularly, to a sachet used for hermetically packaging a fluid content such as a liquid seasoning, particularly when opened. Do not stain the fingers or clothes with the contents, and keep the inside of the bag out of the spout so that the contents do not leak even if the sachet with the remaining contents is temporarily laid down during use. Liquid pouch having an improved structure.

[0002]

2. Description of the Related Art Conventionally, liquid seasonings such as soy sauce, sauces, dressings and noodle soup which are used to attach to take-out foods such as bento and boiled noodles are usually sealed and packaged in pouches with an outlet. Was. However, in such small bag packaging, the filling and sealing of the contents is usually performed by a so-called liquid-sealing method using a continuous bag making and filling sealing machine. There is also a problem that the contents may stagnate at the time of opening, causing the contents to jump out and soiling fingers and clothes.Also, if you want to use the contents multiple times, remove the sachet containing the contents. When laid down, there was a problem that it leaked due to internal pressure and was not suitable for subdivision use.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to seal a liquid content such as a liquid seasoning in a sealed package. Liquid pouches used for cleaning, especially when the pouring path and the internal structure of the pouch are improved to open the pour path of the pouch filled with the contents, and the contents are used to remove fingers and clothes. Excellent in suitability that it does not stain, and even if the sachet with the contents remaining after opening is laid naturally, the contents do not leak out and can be used multiple times without any problem. Liquid sachets with good productivity.

[0004]

The above objects can be attained by the present invention described below. That is, the invention described in claim 1 is a small bag in which the film on the upper and lower surfaces is heat-sealed in a bag shape, and the liquid content is sealed inside, and communicates with one end of the small bag inside. A liquid pouch is provided, which is provided with a pour-out path, and wherein the contents storage section is provided in a compartment structure that partially communicates with each other by a partition seal section.

[0005] The shape of the pouch is not particularly limited, but a three-sided seal type, a four-sided seal type, or a modified form thereof is suitable. Further, the partition seal portions may be provided in any of the longitudinal direction, the lateral direction, and the oblique direction of the pouch, and the number thereof may be arbitrarily provided.

[0006] By adopting such a configuration, in the liquid pouch filled with the contents and sealed, the amount of the contents in the dividing chamber directly connected to the discharge path is reduced, so that the internal pressure applied to the discharge path is reduced. Since the inside is divided into a plurality of parts by the partition seal portion, the effect of reducing the internal pressure is further enhanced, and the pressure loss increases before the contents flow from the inside to the spout, so that the contents at the time of opening Objects can be prevented from jumping out, and fingers and clothes can be prevented from being stained.

After the opening of the spout, the contents can be easily poured by pressing the main body of the small bag with the spout toward the object to which the contents are to be poured. Also, when the pressing is stopped, the pouring is also stopped due to the pressure loss, so that the contents do not leak even if the sachet is laid down, and it is possible to use it not only once but also a plurality of divided uses as desired. Can be done without any problem.

[0008] In the invention described in claim 2, the spouting path is formed to have a narrow width, and the branching chamber directly connected to the spouting path,
2. The liquid pouch according to claim 1, wherein the small pouch is formed narrower than the other compartments.

[0009] In the above, the specific width of the narrow width spouting channel can be appropriately determined according to the fluidity such as the viscosity of the contents filled in the pouch. However, if the width of the pouring path is too narrow, it takes time to pour, or the pouring itself becomes difficult. If the width is too wide, there is a risk of leakage due to only the internal pressure of the contents. It is preferable that the distance is appropriately determined within a range of about 10 mm.

By adopting such a configuration, in addition to the operation and effect of the invention described in the first aspect, the internal pressure blocking performance due to the pressure loss is imparted to the injection path itself, and the internal pressure applied to the injection path is further reduced. As a result, the contents can be more reliably prevented from popping out when opened, and the contents can be more reliably leaked if a small bag with remaining contents is laid down during pouring. Can be prevented.

According to a third aspect of the present invention, there is provided the liquid pouch according to the first or second aspect, wherein an easy-opening means is provided in the pouring path.

As the above easy-opening means, a notch commonly used in ordinary pouches, a half-cut line by laser light irradiation or a method of laminating a uniaxially stretched film in a laminated film of a pouch (in this case, The uniaxially stretched film is used such that its stretching direction coincides with the opening direction of the pouring path). These may be used alone, or, for example, a notch and a half-cut line, or a notch and a uniaxially stretched film. They can be used in combination such as lamination of films.

When the half-cut line is provided, the half-cut line is not limited to a linear half-cut line, but may be provided by an intermittent half-cut line such as a perforated line, and the number thereof may be one. A plurality of linear members may be provided. In addition, when a notch is provided, usually, a notch or V
A notch such as a letter shape is used, but the shape is not particularly limited, and any shape having a pointed portion in the cutting direction can be used.

By adopting such a configuration, in addition to the operation and effect of the invention described in claim 1 or 2, when opening the pouring passage, tools such as scissors are not required, and it can be easily operated only by hand. The tip of the spout can be cut off and opened. Further, for example, when the half-cut line is provided in combination with the notch, the tearing directionality is stabilized, and at the same time, the tearing resistance is reduced, so that the opening can be performed more easily and safely.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention, such as a film used for a liquid pouch according to the present invention and a method for producing the liquid pouch, will be described. First, the film used for the production of the liquid pouch of the present invention is not particularly limited, and any known film that has been conventionally used for a packaging bag for fluid contents such as a liquid material may be used. From these, suitable ones can be freely selected and used according to the use conditions, such as the kind of contents to be filled, the presence or absence of heat treatment after filling, or the distribution form. The following configuration is a typical example of the configuration of a usable film.

(1) ON film / adhesive / L·LDPE
Film (sealant layer) (2) ON film / adhesive / aluminum foil / adhesive /
L-LDPE film (sealant layer) (3) ON film (aluminum or silica or alumina deposited layer) / adhesive / L-LDPE film (sealant layer) (4) ON film / adhesive / uniaxially stretched PP or HDP
E film / adhesive / L / LDPE film (sealant layer) (5) ON film / adhesive / uniaxially stretched PP or HDP
E film / adhesive / aluminum foil / adhesive / LL
DPE film (sealant layer) (6) ON film / anchor coat layer / co-extrusion coat layer (HDPE layer / L / LDPE layer) (the sealant layer is L / LDPE layer)

(7) PET film / adhesive / L·LDP
E film (sealant layer) (8) PET film / adhesive / aluminum foil / adhesive / L·LDPE film (sealant layer) (9) PET film (aluminum or silica or alumina vapor deposited layer) / adhesive / L·LDPE Film (sealant layer) (10) PET film / adhesive / uniaxially stretched PP or HD
PE film / adhesive / L / LDPE film (sealant layer) (11) PET film / adhesive / uniaxially stretched PP or HD
PE film / adhesive / aluminum foil / adhesive / L ・
LDPE film (sealant layer) (12) PET film / anchor coat layer / co-extrusion coat layer (HDPE layer / L-LDPE layer) (the sealant layer is L-LDPE layer)

(13) PET film / adhesive / aluminum foil / adhesive / ON film / adhesive / L / LDPE film (sealant layer) (14) PET film / adhesive / ON film / adhesive /
Aluminum foil / adhesive / L·LDPE film (sealant layer) (15) PET film / adhesive / EVOH film / adhesive / ON film / adhesive / L·LDPE film (sealant layer) However, the present invention is not limited to this, and various combinations of laminated films can be used.

In the above, the ON film is a biaxially stretched nylon film, the PET film is a biaxially stretched polyethylene terephthalate film, the EVOH film is a saponified ethylene-vinyl acetate copolymer film,
PE is low-density polyethylene, L / LDPE is linear low-density polyethylene, HDPE is high-density polyethylene, PP
Refers to polypropylene.

The portions indicated as adhesives are generally bonded to each other by a dry lamination method on films on both sides thereof. In this case, an adhesive for dry lamination such as a two-component curing type is used. In addition, it is also possible to bond by an extrusion lamination method (so-called sandwich lamination method), in which case,
A heat-adhesive resin is used. In this case, an anchor coat can be applied to the laminated surfaces of the films on both sides.

The anchor coat is a kind of primer coat which is previously coated on the substrate film side in order to improve adhesiveness when the resin is laminated by an extrusion method using a T-die or the like.

In the construction of the laminated film, ON
Film, PET film, as a base film, imparts mechanical strength and printability to the bag, and the uniaxially stretched PP film and the uniaxially stretched HDPE film have the stretching direction coincide with the tearing direction when opening the bag. By using this, the directionality of the tear can be further stabilized. An aluminum foil, an aluminum or silica or alumina vapor-deposited layer, an EVOH film, and the like are laminated mainly to impart gas barrier properties.

Although the example of the L·LDPE film has been given as an example of the sealant layer, a layer obtained by extrusion-coating L·LDPE may be used. In such a case, an anchor coat may be applied to the laminated surface in place of the adhesive. it can. L·LDPE is excellent in heat seal stability, content resistance, stress cracking resistance, and the like, and can be widely used as a sealant layer of a bag filled with a liquid content.

In the sealant layer, the above L·LDP
In addition to E, depending on the contents to be filled, heat treatment after filling, distribution conditions, etc., CPP (unstretched polypropylene),
LDPE, ethylene-α-olefin copolymer, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, ethylene-acrylate copolymer, ionomer, polyester resin, etc. Can be used.

In particular, an ethylene / α-olefin copolymer obtained by polymerization using a single-site catalyst such as a metallocene catalyst has a narrow molecular weight distribution and a stable copolymerization ratio, so that the low-temperature heat sealability and It has excellent hot sealing properties, and can be suitably used as a sealant layer of the liquid pouch of the present invention.

Next, a method for producing a liquid pouch of the present invention produced using the above-described laminated film will be described. The liquid sachet of the present invention is basically a sachet in which the upper and lower two surfaces of the film are heat-sealed in a bag shape as described above, and the liquid content is sealed therein,
At one end of the pouch, there is provided a spouting path communicating with the inside, and the contents storage section is provided in a compartment structure that is partially connected to each other by a partition seal section.

Accordingly, such a liquid pouch has a heat seal portion forming a pouring path and a seal pattern forming a partition seal portion, usually a seal pattern of an upper heat seal portion, which is formed by the above-described pouring path. Just by changing to a seal pattern that can form a partition, similar to a conventional liquid pouch, for example, using a rolled-up laminated film, filling the bag and filling the contents, and heat sealing the opening Can be manufactured with high productivity by using a small bag making and filling machine for liquid that performs in-line.

That is, the rolled laminated film is supplied, and the bottom and side portions of the bag are heat-sealed with a heating die roll or the like in a three-side seal type or a four-side seal type. After filling the contents, at the time of the upper heat seal, for example, heat seal with a seal pattern that can simultaneously form the partition seal portion and the pouring path, and also a notch in the pouring path, or a combination of a notch and a half cut line For example, the package can be easily manufactured by providing an easy-opening means or the like, and then separating the individual packages.

[0029]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below more specifically with reference to the drawings. However, the present invention is not limited to these drawings. FIGS. 1, 2, 3 and 4 are plan views each illustrating the configuration of an embodiment of the liquid pouch according to the present invention.

The liquid pouch 100 shown in FIG. 1 is made in a four-sided seal type, and has a laminated film 1 having two upper and lower surfaces.
Is heat-sealed by the bottom heat-sealing part 2 and the side heat-sealing part 3, and after the liquid content is filled from the top opening, the top opening is heat-sealed. At the time, a horizontal partition seal part 6 for forming the contents storage part into a compartment structure in which a part thereof communicates, and an upper heat which can form the pouring passage 5 in a part of the upper part and seal the upper part. The heat-sealing is performed by a seal pattern capable of heat-sealing both with the seal portion 4, and a notch 7 is provided as an easy-opening means on the side of the pouring path 5 near the front end.

The cut line 8 connected to the notch 7
A half-cut line by laser light irradiation or the like may be provided at the position, and an easy-opening means combining the notch and the half-cut line may be used. In addition, the width of the pouring path 5 is not particularly limited, but is preferably appropriately determined according to the fluidity of the contents, and is usually preferably in a range of about 2 to 10 mm. The above-mentioned easy-opening means and the width of the pouring path are the same in the liquid pouch shown in FIGS.

By adopting such a structure, the liquid pouch 100 filled and sealed with the contents easily tears the upper part of the pouch 100 in the direction of the cutout line 8 starting from the notch 7 when using the contents. The opening 5 can be opened. At this time, the main body portion of the small bag 100 is separated by the partition seal portion 6 into the content storage portions a and b of the compartment structure.
, The amount of the stagnant contents is small in the portion of the content storage section a directly connected to the pouring path 5,
Further, since the internal pressure according to the present invention is reduced and the spouting channel 5 itself is formed to have a narrow width, it has an internal pressure blocking property and can prevent the contents from jumping out and soiling fingers and clothes.

When the contents are poured out, the contents are pressed by pressing the contents storage portions a and b of the liquid pouch 100 or squeezed out from the bottom toward the pouring path 5 so that the contents are discharged. When it is reliably poured out onto the object from the pouring path 5, and when the pressing or the squeezing is stopped halfway,
Discharge is stopped because the internal pressure is reduced. Therefore, even if the pouch 100 is laid down, the contents do not leak out, and not only a single use but also a plurality of divided uses can be performed without any problem.

The liquid pouch 200 shown in FIG. 2 is the same as the liquid pouch 100 shown in FIG.
2, only two horizontal partition seals 6 provided in the content storage unit are provided in the horizontal direction as shown in FIG. It is configured by changing to a shape having contents storage sections a, b, and c.

By adopting such a configuration, the portion of the contents storage section a directly connected to the spouting path 5 becomes narrower than in the case of the liquid pouch 100 having the configuration shown in FIG.
The amount of contents remaining in this portion is further reduced, and the internal pressure applied to the spouting channel 5 is further reduced. Therefore, the spout 5
Can be more reliably prevented from jumping out of the contents when the container is opened and from leaking out the contents when the small bag 200 in which the contents remain during the pouring is laid down.

The liquid pouch 300 shown in FIG. 3 is the same as the liquid pouch 100 shown in FIG.
0, ie, only the horizontal partition seal 6 provided in the content storage section is changed to a vertical partition seal 6 extending upward from the bottom heat seal 2 as shown in FIG. The content storage units a and b have two compartments, and the content storage unit a directly connected to the spouting path 5 is changed to a shape that is narrower than the content storage unit b. is there.

In the case where such a configuration is adopted, the discharging path 5
Since the amount of contents staying in the contents storage section a directly connected to the container can be reduced, the internal pressure applied to the spouting path 5 can be reduced, and the liquid pouch 100 having the structure shown in FIG. Operation and effect similar to the operation and effect described in (1) can be more reliably obtained.

The liquid pouch 400 shown in FIG. 4 is the same as the liquid pouch 100 shown in FIG.
As shown in FIG. 4, only the main body portion 0, that is, the horizontal partition seal portion 6 provided in the content storage portion is
Is replaced with an oblique partition seal portion 6 extending obliquely upward from the intermediate portion of the side heat seal portion 3 on the side provided with the two side compartment structure storage portions a and b, and a spout channel 5.
Is changed to a shape in which the content storage part a directly connected to the shape becomes narrower than the content storage part b.

In the case where such a configuration is adopted, the discharging path 5
Since the amount of content staying in the content storage portion a directly connected to the container can be reduced, the internal pressure applied to the spouting path 5 can be reduced, and the liquid pouch 100 having the configuration shown in FIG. Operation and effect similar to the operation and effect described in (1) can be more reliably obtained.

[0040]

As described above in detail, according to the present invention, a liquid pouch for sealing a liquid content such as various liquid seasonings is provided at one end of the pouch. It is easy to open the pouring path, and at the time of opening, it does not stain the fingers or clothes with the contents, and after opening,
By pressing the contents storage part of the pouch or by squeezing the contents from the bottom side of the pouch in the direction of the pouring path, the contents can be reliably poured out onto the object, and furthermore, If the pressing or squeezing is stopped halfway, the pouring is also stopped, and the contents do not leak naturally even if the small bag in which the contents remain is laid down, not only for one-time use, The effect of being able to provide a liquid pouch excellent in usability with good productivity is that it is possible to freely use the divided parts divided into a plurality of times without any problem.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating a configuration of a first embodiment of a liquid pouch according to the present invention.

FIG. 2 is a plan view illustrating the configuration of a second embodiment of the liquid pouch according to the present invention.

FIG. 3 is a plan view illustrating the configuration of a third embodiment of the liquid pouch according to the present invention.

FIG. 4 is a plan view illustrating the configuration of a fourth embodiment of the liquid pouch according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Laminated film 2 Bottom heat seal part 3 Side heat seal part 4 Upper heat seal part 5 Injection path 6 Partition seal part 7 Notch 8 Cut line a, b, c Contents storage part 100, 200, 300, 400 Liquid pouch

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Osamu Okuma Inventor F-term (reference) within 1-1-1 Ichigaya-Kaga-cho, Shinjuku-ku, Tokyo 3E064 AA05 BA22 BC18 HP01 HS05

Claims (3)

[Claims] 1. A small bag in which a film on both upper and lower surfaces is heat-sealed in a bag shape, and a liquid content is sealed inside the bag, and one end of the small bag has a pouring passage communicating with the inside. A liquid pouch, wherein the contents storage section is provided in a compartment structure in which a part of the contents storage section communicates with each other by a partition seal section. 2. The liquid pouch according to claim 1, wherein the spouting channel is formed to have a narrow width, and a compartment directly connected to the spouting channel is formed narrower than the other compartments. 3. The liquid pouch according to claim 1, wherein an easy-opening means is provided in the pouring path.