JPH11349006A - Pouch for refilling and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pouch for refilling and a method for producing the pouch, with which it is easy to make a bag, easy to fill contents, the open characteristics and shape retention of a spout part provided at a part on the upper part are superior, and with which contents can be easily and safely refilled into a container having an aperture of a small diameter. SOLUTION: A pouch 100 for refilling is made as standing pouch. In providing on a part of its top a spout 5 formed by heat sealing the outer periphery, a stick shape body with a required thickness is inserted along the center line E of the spout 5 between the films of both spout 5 faces for heat sealing the side seal pats 6a, 6a of the spout with one film flat and the other film covering stick. One of the two films of both spout 5 faces is enlarged so as to form the spout 5 with a space as an internal swell part 7 by removing the stick and by heat sealing the spout tip end seal part 6b and shoulder seal parts 6c, 6c on both sides.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pouch for refilling, which is used for hermetically packaging contents having fluidity such as liquid and transferring the contents to another container such as a bottle at the time of use, and a method for producing the same. More specifically, in a refill pouch in which a narrow width spout portion is formed at one end such as an upper portion of the pouch, refilling in which opening of the spout portion is prevented due to close contact between inner surfaces of the film of the spout portion and improved opening property. The present invention relates to a pouch for use and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, standing pouches which are self-supporting and have some of the features of a three-dimensional container are mainly used as refill pouches for hermetically packaging contents having fluidity such as liquid, and , So that the contents can be safely transferred to another container when opened, without spilling the contents.
The opening is formed by cutting out a part such as a corner instead of the entire upper part of the pouch, or a method of providing a narrower spout part in a part of the upper part of the pouch, and further, a separate part such as a plastic molded product. The method of attaching the spout to the upper part of the pouch by heat bonding was adopted.

[0003]

However, the method of forming the opening of the pouch by cutting a part such as a corner portion instead of the entire upper part of the pouch is simple, but the pouring direction of the contents is hard to stabilize. In particular, when the container to be transferred is a small-diameter container such as a bottle, the opening of the pouch is likely to be displaced from the opening of the container during the pouring, and the contents may be spilled out. There was a problem in terms of safety.

Further, a method of attaching a separate spout made of a plastic molded article to a part of the upper part of the pouch requires an additional manufacturing process, costs the spout itself, and furthermore, an empty pouch having the spout attached thereto. This increases the thickness, which increases the cost of storage and transportation.When filling the contents, for example, the number of empty pouches loaded into the There is a problem that the cost is increased as a whole and the steps and operations are complicated, such as the necessity of supplying a pouch.

[0005] The operability and safety when transferring the contents to another container can be improved to some extent by the method of providing a narrow spout at a part of the upper part of the pouch.
When pouring out the contents, the mouth of the opened spout is difficult to open, and when the viscosity of the contents is low, it pops out vigorously at the beginning of pouring, and when the remaining amount is small, the pouch When the spout becomes easy to close and presses and pushes the pouch,
The contents could jump out and spill outside, and there were still problems in terms of ease of transfer and safety.

As a method for solving the problems of the opening property of the spout portion and the blocking of the opening portion during the pouring, there is a method of forming a bulging portion in the film of the spout portion by means such as hot embossing. . According to this method, it is possible to form an opening having good shape retention at the spout. However, this method requires a mold and a heating device for forming the bulging portion, and thus has a disadvantage that the device is expensive.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and an object of the present invention is to eliminate the use of a separate spout made of a molded product or the like and to use a heat embossing device. No expensive equipment is required, it can be manufactured with the same process as a normal pouch with good productivity, the contents can be easily filled, and when used, a narrow width pouch provided at the edge such as the top of the pouch is used. Just cut off the tip of the outlet,
An inexpensive pouch for refilling that has a spout opening that opens naturally, has good shape retention, and can be safely and easily transferred to the end even for small-diameter bottles. And a production method with good productivity.

[0008]

The above objects can be attained by the present invention described below. That is, the invention described in claim 1 is a pouch obtained by heat-sealing a laminated film mainly composed of plastic in a bag shape, and a part of an upper edge of the pouch has an outer periphery, that is, a tip. Portion, both sides, and a shoulder portion are provided with a narrow width spout portion which is heat-sealed, and the size of one of the two-sided films forming the spout portion is changed to the other film. A refill pouch characterized by being larger and provided with a spout so as to form a cavity therein.

[0009] By adopting such a configuration, a separate pour port made of a molded product or the like is not used, and an expensive device such as a hot embossing device is not used, and a process similar to a normal pouch is performed. A pouch can be manufactured, and the filling of the contents is also not provided with a spout at the top of the pouch,
Alternatively, a portion of the body heat-seal portion of the pouch can be easily filled from this portion by forming an unsealed opening, and when the contents are used, the upper edge of the pouch is closed. Since the film on the side where the dimension of the narrow width spout part provided in a part is increased, becomes a shape bulging outward in a tunnel shape along the center line of the spout part,
By simply cutting off the tip of the spout, the spout automatically opens with good shape retention, and the contents can be safely and easily transferred to the end even for small-diameter bottles. It is possible to provide a refillable pouch which is inexpensive and excellent in suitability for use.

According to a second aspect of the present invention, there is provided the pouch for refilling according to the first aspect, wherein a cutout portion is provided on at least one side of the spout portion.

By adopting such a configuration, in addition to the operation and effect of the invention described in the first aspect, the contents can be poured out while applying the notch to the mouth of the container. The spout is securely fixed to the mouth of the container, and the contents can be safely and easily transferred.
The notch may be provided only on one side of the spout, or may be provided on both sides, in which case the spout is inserted into the mouth of the container. Since the object can be poured, the safety and ease of the discharging can be further improved.

According to a third aspect of the present invention, there is provided the refillable pouch according to the first or second aspect, wherein an easy-opening means is provided at the spout.

The above easy-opening means is a method of laminating a uniaxially stretched film on a half cut line by laser light irradiation or an intermediate layer of a laminated film of a pouch, in addition to a notch often used in a normal pouch. In such a case, the uniaxially stretched film is used so that the stretching direction thereof coincides with the opening direction of the spout portion), and these may be used alone.For example, lamination of a notch and a uniaxially stretched film, or , A notch and a half-cut line, and the like, as appropriate. When the half-cut line is provided, the half-cut line is not limited to a linear half-cut line, and may be provided by an intermittent half-cut line such as a perforated line. Also, such a half-cut line may be one, but assuming that the tearing direction is shifted, a plurality of half-cut lines such as one each or two each on both sides of the center half-cut line. Can be provided in parallel.

In particular, as in the present invention, when the spout is formed so as to have a void therein, there is no problem when scissors or the like are used to open the spout. When opening, the films on both sides are separated,
The directionality of the tear tends to be unstable, and it is more preferable to use a combination of the easy-opening means as described above.
In addition, as the notch, a one-shaped or V-shaped notch is usually used, but the shape is not particularly limited, and any shape having an acute angle portion in a cutting direction can be used.

By adopting such a configuration, in addition to the functions and effects of the invention described in claim 1 or 2,
When opening the spout, it is not necessary to use tools such as scissors, and the spout can be easily opened at the desired position by simply cutting off the tip of the spout.

According to a fourth aspect of the present invention, there is provided the refillable pouch according to any one of the first to third aspects, wherein the pouch is a standing pouch type pouch.

By adopting such a configuration, in addition to the operation and effect of the invention according to any one of the first to third aspects, since the pouch is of a standing pouch type, it has autonomy and is easy to handle. In addition to being easy, the appearance is also excellent, and the operation of transferring the contents can be easily performed.

According to a fifth aspect of the present invention, a laminated film mainly composed of plastic is heat-sealed in a bag shape to form a main body of a pouch, and a part of an upper edge portion of the pouch is formed.
Outer circumference, i.e., the tip, both sides, and in the method of manufacturing a refill pouch to form a narrow width spout portion by heat sealing the shoulder portion, when heat sealing the spout portion,
A rod having a required thickness is interposed between the films on both sides of the facing spout along the center line of the spout, one of the films being flat and the other being a rod. Heat-seal at least both sides of the spout, then remove the rod-shaped body, heat-seal the tip and shoulder of the spout to form a double-sided film forming the spout The size of one of the films is made larger than the other film, and the method for producing a refill pouch is characterized in that the outer periphery of the spout is heat-sealed so that a void is formed inside. .

By adopting such a manufacturing method, it is possible to repeatedly insert and remove the film between the films on both sides of the spout into a known bag making machine for forming the bag in accordance with the form of the pouch body. By attaching a rod-shaped jig and a heat sealing device that heat seals the spout
A part of the upper edge of the pouch has a perimeter, that is, a narrow width spout formed by heat-sealing the tip, both sides and the shoulder, and a void inside, and one film Can be formed in a shape that bulges outward in a tunnel shape, and without using expensive equipment such as a hot embossing device, a spout similar to a normal pouch can be used to create a spout with excellent natural opening and shape retention. The refill pouch provided can be manufactured with high productivity.

According to a sixth aspect of the present invention, a laminated film mainly composed of plastic is heat-sealed in a bag shape to form a main body of the pouch, and an outer peripheral portion is formed on a part of an upper edge portion of the pouch. That is, in the method of manufacturing a refill pouch for forming a narrow width spout by heat sealing the tip, both sides, and shoulders, when heat sealing the spout, both sides of the spout On either side of the film, a sealing receiving mold having a bar-shaped convex portion of a required height is arranged along the center line of the spout portion, and the film on both sides of the spout portion is formed of the bar-shaped convex portion. By wrapping the part, heat-sealing at least both side parts of the spout part, and then heat-sealing the tip part and the shoulder part of the spout part on a plane, so that the film on both sides of the spout part becomes the rod-shaped film. Circumference when wrapping a convex part More, the dimensions of one film,
A method for manufacturing a refill pouch, wherein the outer periphery of the spout is heat-sealed so that a void is formed inside the film, which is larger than the other film.

By adopting such a manufacturing method, similar to the manufacturing method of the refill pouch according to the fifth aspect of the present invention, a part of the upper edge of the pouch has an outer periphery, that is, a tip. Part, both side parts, and a narrow width spout part formed by heat sealing the shoulder part, having a cavity inside, can be formed into a shape in which one film bulges outward in a tunnel shape, so that the heat embossing device Without using such an expensive apparatus, a refillable pouch having a spout having excellent spontaneous opening and shape retention can be manufactured with high productivity in the same process as a normal pouch.

In the case of this manufacturing method, when compared with the method of manufacturing a refill pouch of the invention described in claim 5,
When making a difference in dimensions between the films on both sides of the spout, the swelling height is slightly reduced due to some restrictions, but sufficient natural opening property and shape retention can be obtained. In addition, it is not necessary to insert or remove a rod-shaped jig between the films on both sides at the time of heat sealing of the spout, so that the productivity is remarkably excellent.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a film used for manufacturing a refill pouch of the present invention and a form of the pouch will be described. The film used for manufacturing the refill pouch of the present invention is mainly a laminated film mainly composed of plastics, but is not particularly limited, for example, a known laminated film used for various liquid pouches, Either can be used. From these, suitable ones can be freely selected and used according to the use conditions such as the type of contents to be packaged and the presence or absence of heat treatment after filling. As a representative example of the configuration of the laminated film that can be preferably used, the following configuration can be given.

(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 or alumina deposited layer) / adhesion Agent / Uniaxially stretched HDPE film / Adhesive / L ・ LDP
E 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-LDP
E 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) Instead, various combinations of laminated films can be used.

In the above, the ON film is a biaxially stretched nylon film, the L / LDPE is a linear low density polyethylene, the HDPE is a high density polyethylene, the LDPE is a low density polyethylene, the PP film is a polypropylene film, and the PET film is biaxially stretched. A polyethylene terephthalate film and an EVOH film indicate a saponified ethylene-vinyl acetate copolymer film, and a CPP film indicates a non-stretched polypropylene film. In addition, the anchor coat is a kind of primer coat that is previously coated on the base film side in order to improve adhesiveness when laminating a resin by extrusion coating.

In the construction of the laminated film, ON
Films and PET films are used as base films to impart mechanical strength and printability to pouches,
When the film and the uniaxially stretched PP film are used so that the stretching direction thereof coincides with the tearing direction at the time of opening the spout of the pouch, the directionality of the tearing can be further stabilized. An aluminum foil, a silica or alumina vapor-deposited layer, an EVOH film, and the like are laminated to provide gas barrier properties. In addition, as the sealant layer, L-LDPE film and C
Although two types of PP films have been mentioned, the L / LDPE film is excellent in heat seal stability and content resistance, such as stress cracking resistance to a surfactant, and the CPP film has heat resistance and low odor. Excellent in nature,
It is suitable for packaging contents that require these properties.

In the sealant layer, in addition to the above, depending on the content to be filled, ethylene / α-olefin copolymer, ethylene / vinyl acetate copolymer, ethylene / acrylic acid copolymer, ethylene / acrylic ester copolymer may be used. Polymers, ionomers, polyester resins and the like can also be appropriately selected and 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 is excellent in hot sealability, and is suitable for a sealant layer of a pouch having a step due to a difference in film overlap with a heat seal portion such as a standing pouch in that the occurrence of pinholes due to seal missing can be prevented. . Furthermore, by using a blend of the copolymer and an olefin elastomer, the heat fluidity of the sealant layer is improved, and the generation of pinholes due to the steps can be more effectively prevented.

Next, a method of manufacturing the refill pouch of the present invention, which is manufactured using the above-described laminated film, will be described. The shape of the main body portion of the refill pouch of the present invention is not particularly limited.For example, a three-side seal type, a four-side seal type pouch, a standing pouch and the like can be suitably used, and a pillow type and gusset type pouch can be used. When necessary, the back seal portion and the gusset portion can be used by adjusting the position of the back seal portion as appropriate so as not to overlap the spout portion.

Therefore, basically, according to the pouch type to be employed, a bag making machine corresponding to each type is used, and a spout portion, a cutout portion on a side portion thereof, a notch, a half cut line, etc. The pouch can be easily manufactured by incorporating a processing device for providing the additional component part inline or preparing it offline.

In the present invention, the position of the spout and the shape of the spout provided in a part of the upper part of the refill pouch are not particularly limited. For example, the position of the spout may be the center of the upper part of the pouch. It may be a corner. Also, depending on the position of the spout, the shape of the spout may be vertically upward, obliquely upward, horizontally, and
The inside line of the heat seal portion on both sides of the spout port, that is, the line on both sides of the liquid passage may be straight or curved and tapered, or may have a parallel portion on the tip side.

The height of the tunnel-like bulge of the spout formed by the difference in the dimensions of the films on both sides of the spout, particularly the width of the spout, is 1 at the maximum. About 6 mm is preferable, and 2 to 4 mm is more preferable. When the height of the highest part is less than 1 mm, the effect on the natural opening is slightly reduced. On the other hand, when the height is more than 6 mm, the effect on the natural opening is already sufficient. It is not preferable because the outlet portion is bulky, which deteriorates the handling of empty bags and the suitability of loading empty bags into the feeder portion of the filling and sealing machine.

In order to provide such a tunnel-shaped bulge in the spout, one of the films on both sides is formed by drawing to this portion.
As a result, the film on the side where the size of the spout portion is increased, on both sides of the spout portion and around the tip side,
As the size is increased, the size becomes insufficient and distortion occurs.

However, when the height of the bulging portion of the spout is within the above range, the dimensional difference between the films on both sides is about 1 to 2 mm at the spout and this dimension is Almost half by dispersing. Therefore, the distortion generated around the spout portion heat-seals the spout portion, for example, heat-seals both sides first, and then heat-seals the tip portion and both sides shoulders. By performing the division, although some distortion remains, large wrinkles do not occur and the surroundings can be absorbed to an acceptable degree in appearance.

[0035]

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. Further, the same reference numerals are used for the parts having the same names in different drawings. Figure 1,
FIG. 2 is a front view showing the configuration of one embodiment of the refill pouch of the present invention.

FIGS. 3 and 4 are views for explaining a method of heat sealing both sides of the spout in the method of manufacturing a refill pouch according to the present invention.
(A) is a cross-sectional view of a main part for explaining a device for heat-sealing both sides of a spout, and (B) is a partial front view showing a heat-seal pattern of an upper portion including a spout of a pouch. . FIG. 5 is a view for explaining a method of an application example in which both sides of the spout are heat-sealed in the method for manufacturing a refill pouch of the present invention. It is sectional drawing of the principal part explaining the apparatus to heat-seal, (b) is a partial front view which shows the heat-seal pattern of the upper part containing the pouring-out part of a pouch.

In FIG. 1, a refill pouch 100 is shown.
Is made in the form of a standing pouch. That is, the bottom 2 is formed in a gusset form in which the film is folded inward according to a conventional method, and a semicircular notch is provided near the lower end on both sides of the film folded inward, so that the bottom of the boat bottom is formed. It is formed by heat sealing at the seal portion 3. The body of the pouch 100 is formed by heat sealing both side edges of the front and rear wall surface films 1, 1 '(1' is not shown) with the body seal portions 4, 4 '. You. In addition, the torso seal portions 4, 4 '
Of the body seal portions 4 on both sides are heat-sealed first after the bottom seal portion 3, and the body seal portions 4 'are heat-sealed by the spout side seal portions 6a, 6a. After sealing, heat sealing is performed together with the tip end sealing portion 6b and the shoulder sealing portions 6c, 6c of the spout portion.

At the upper corner of the pouch 100, a spout 5 is provided at its outer periphery, that is, at the tip, both sides and both shoulders, respectively, at the spout tip sealing portion 6b.
The side wall seals 6a, 6a, 6a, 6c, 6c are formed by heat-sealing the wall films 1, 1 'on both sides, and both sides of the spout 5 are formed. The portion is cut out at the notch portions 8 and 8 and is provided in a shape projecting obliquely upward.

The method of heat sealing the outer periphery of the spout 5 will be described in detail later with reference to FIGS. 3 and 4. In particular, the side seals 6a, 6a on both sides of the spout 5 are heated. At the time of sealing, heat sealing is performed so that one of the films 1, 1 'on both sides, for example, the illustrated film 1 has a larger width dimension at the spout 5 than the other film. Then, the tip end seal portion 6b of the spout portion 5 and the shoulder seal portions 6c, 6c on both sides,
Then, the body sealing portion 4 'is heat-sealed.

By performing heat sealing of the outer periphery of the spout portion 5 and the body seal portion 4 ′ in such a manner, from the spout portion 5 to the inside of the pouch 100, the center line E of the spout portion 5 is formed. Along with this, a bulging portion 7 bulging outward in a tunnel shape by the film 1 is formed, and the content is located between the upper end of the upper outlet sealing portion 6c and the upper end of the body sealing portion 4 '. An unsealed opening 10 for filling is formed.

The cutouts 8 on both sides of the spout 5 are preferably provided by punching or the like after the outer periphery of the spout 5 is heat-sealed. By providing a notch in the notch 9, a notch 9 as an easy-opening means can be provided in the vicinity of the tip of the spout 5 at the same time as the notch 8. Such notches 9 may be provided on both sides of the spout 5. Further, at the position of the cutout line 11 connected to the notch 9, a display by printing may be provided, or a half cut line by laser light irradiation or the like may be provided.

By adopting such a configuration, the refill pouch 100 can easily fill and seal the contents from the upper unsealed opening 10, and can be filled with the contents. Is self-supporting, easy to handle, and excellent in appearance. When the contents are transferred to a bottle or the like, the spout 5 can be easily opened by tearing the tip of the spout 5 in the direction of the cutout line 11 using the notch 9. it can.

Since the opened spout 5 is formed so that the film 1 on one side swells outward, the spout 5 automatically opens with good shape retention upon opening. And
Both sides of the spout 5 are cut out at the cutouts 8, 8,
Since the spout 5 is formed so as to protrude thinly,
The contents can be transferred by lifting the pouch 100 by hand and inserting the spout 5 into the mouth of the bottle. Therefore, it is possible to transfer the contents safely and easily to the end without blocking the spout 5 during the pouring and without spilling out the contents.

Next, the refill pouch 20 shown in FIG.
In the configuration of the refill pouch 100 shown in FIG. 1, only the form of the pouch body is changed to a four-sided seal type pouch, and all other parts are processed in the same manner as the refill pouch 100 of FIG. It is configured.

When such a configuration is adopted, the pouch 200 is not self-supporting, is slightly inferior in ease of handling and appearance in comparison with the pouch 100 shown in FIG. In addition, there is an advantage that the productivity is good and the cost is low.
The shape retention and the like are similarly excellent, and the contents can be transferred safely and easily.

FIG. 3 is a view for explaining a method of heat sealing both sides of the spout in the method for producing a refill pouch according to the present invention. FIG. 2B is a cross-sectional view of a main part illustrating an apparatus for heat-sealing the part, and FIG. 2B is a partial front view showing an upper heat-sealing pattern including a spout of the pouch. The heat sealing device shown in FIG. 3 (a) moves in a horizontal direction (specifically, in the direction of the center line E of the pouch spout) above the fixed sealing receiver D at the bottom. It is composed of a rod-shaped body A and a heat seal type C that moves in the vertical direction and heat-presses and heat-seales both sides of the pouch outlet.

When heat-sealing both sides of the pouch spout, when the heat-seal mold C is moving upward, the bottom and the lower part of the body below the spout are heat-sealed pouches. Is sent to the heat sealing device from the lateral direction. At this time, the films 1, 1 'on both sides of the spout are separated vertically by a guide (not shown), and the lower film 1' is placed on the lower side of the rod-shaped body A on the upper surface of the receiving mold D for sealing. The film 1 on the upper side is fed in a plane along the upper side, and the film 1 on the upper side is fed to the upper side of the rod-shaped body A and stops at a predetermined position. The rod A is wrapped around, and both sides of the spout on both sides of the rod A are at a predetermined temperature, pressure,
It is heat-pressed and heat-sealed in a short time.

Next, the rod A is moved to the center line E of the spout.
, And is pulled out from the spout, the heat seal type C is raised, and the pouch is sent to the next section. Then, after performing heat sealing of the tip of the spout, the shoulders on both sides, and the upper part of the body seal, the cutouts on both sides of the spout are punched out, and pouch bag making is performed. Ends. By performing the heat sealing of the spout portion in this manner, the size of one film is larger than that of the other film so that the void portion is formed inside the film on both surfaces forming the spout portion. A spout can be provided.

The procedure of heat sealing each part of the pouch will be described with reference to the heat seal pattern diagram of the upper part of the pouch including the spout shown in FIG. First, a pouch in which the bottom seal portion (not shown) and the lower portions 4, 4 of the body seal portions on both sides are heat-sealed is sent to the heat seal device shown in FIG. The side seal portions 6a, 6a on both sides of 5 are heat-sealed. Next, the pouch is transported to the next heat sealing section, where the spout tip sealing portion 6b, the spout shoulder sealing portions 6c on both sides,
6c, and the upper body seal portion 4 'is heat-sealed in the same manner as a normal heat seal. This heat sealing may be performed at the same time, or may be performed by dividing appropriately and sequentially.

Thereafter, the cutouts 8, 8 on both sides of the spout 5 are punched out, and the side of the pouch is cut to complete the refill pouch. In the case where a half-cut line is provided in the portion of the cutout line 11 connected to the notch 9 near the tip end of the spout, for example, a laser beam irradiation device is installed before or after the cutouts 8 are cut out. Can be processed.

By heat-sealing the upper part of the pouch including the spout in the order described above, the spout 5 is
One of the films 1, 1 'on both sides of the film 1, 1'
Is larger than the other film 1 ', the difference in film size occurring in the other part can be dispersed and absorbed on both sides of the spout 5. Heat sealing can be performed in a good condition without generating large wrinkles.

The method for producing a refill pouch as described above corresponds to the method for producing a refill pouch described in claim 5, and by adopting such a production method, the method shown in FIGS. The refill pouch 100 shown,
As shown at 200, from the spout to the top of the pouch main body, one of the films swells outward like the swelling portion 7 and has a spout having excellent opening properties and shape retention, and is excellent in usability. The refill pouch of the present invention can be manufactured with high productivity.

FIG. 4 is a view for explaining another embodiment of a method for heat-sealing both sides of the spout in the method of manufacturing a refill pouch of the present invention. 2 is a partial front view showing an upper heat seal pattern including a spout of a pouch. FIG. The heat sealing devices on both sides of the spout shown in FIG. 4A are inserted between the films on both sides of the spout in the configuration of the heat sealing device shown in FIG. The rod-shaped body A is removed, and instead, a bar-shaped protrusion B (having a semicircular cross section in the figure) of a required height along the center line of the spout is provided on the upper surface of the receiving mold D for sealing. It is provided and configured.

When heat-sealing both sides of the pouch spout, the films 1, 1 'on both sides of the spout are placed on the bar-shaped projection B as shown in the figure. When the heat-seal mold C is lowered, the films 1, 1 'on both sides wrap the rod-shaped convex portion B from above, and the side seal portions on both sides of the spout portion 5 at a predetermined temperature, pressure and time. 6a, 6a are heat-sealed so that the dimension of the upper film 1 is larger in the width direction of the spout than the lower film 1 'due to the circumferential difference caused by the bar-shaped convex portions B, and is returned to a planar shape. In this case, a gap is formed between the films 1, 1 'on both sides.

Other processing methods such as heat sealing and punching of each part of the pouch are the same as those described with reference to FIG. Such a method of manufacturing a refill pouch corresponds to the method of manufacturing a refill pouch described in claim 6. By adopting such a manufacturing method, the manufacturing method described in FIG. Similarly, the refill pouch 1 shown in FIGS.
As shown in FIGS. 00 and 200, one film 1 swells outward from the spout portion 5 to the upper part of the pouch main body like a swelling portion 7 so that the spout portion 5 excellent in opening property and shape retention is formed. The refill pouch of the present invention which is provided with excellent suitability for use can be manufactured with higher productivity.

FIG. 5 is a view for explaining a method of an application example in which both sides of the spout are heat-sealed in the method of manufacturing the refill pouch of the present invention. (B) is a partial front view showing an upper heat seal pattern including a spout portion of a pouch. In this manufacturing method, as shown in FIG. 5 (a), a heat-sealable mold C capable of up-and-down movement for heat-sealing both sides of the pouch spout portion 5 as shown in FIG. In addition to the side seals 6a, 6a on both sides, a three-row configuration is adopted so that the shape shown by the spout intermediate seal 6d can be heat-sealed to the intermediate part thereof. Two rods inserted between 1, 1 'are arranged in parallel between the three rows of seal heads like rods A, A, and one (left side in the figure) rod A is ,
The rod-shaped body A on the other side (the right side in the figure) is configured to move in the horizontal direction so as to be capable of being inserted into and pulled out from the spout, and is also moved in the vertical direction by a predetermined stroke as shown in the figure. The heat-sealing device is configured such that the seal receiving die D is provided with a groove-shaped concave portion so that the right rod-shaped body A can be vertically moved.

By using such a heat sealing device, the spout 5 is heat-sealed in the same procedure as the method described with reference to FIG. 3 so that the spout 5 is sealed at the spout middle seal 6d. Is divided into two upper and lower rows, and the divided spout portion 5 has two rods A, A in each row. It is formed so as to be larger than the other film, and is formed such that the films 1, 1 'on both sides swell in a tunnel shape in directions different from each other. Therefore, the bulging portion of the spout 5 formed in such a manner divided into two rows also has the opening property and the shape retaining property similar to those formed by the method shown in FIGS. Are better.

By forming the spout 5 in this manner, in the heat seal pattern shown in FIG. 5B, the bulge formed above the spout middle seal 6d is replaced with the contents. Can be used as an inlet for air at the time of pouring out, and a bulge formed under the sealing portion 6d at the outlet portion can be used as a pouring port for contents. By simply tilting the container, the flow of the contents is not interrupted on the way, and the contents can be poured more smoothly to the end. In addition, as a whole of the spout 5, the films 1, 1 'on both sides are drawn substantially evenly and the side seals 6a, 6a and the intermediate seal 6d on both sides are heat-sealed. When heat sealing the spout shoulder seal portions 6c, 6c on both sides and the body seal portion 4 'to be heat-sealed, there is no dimensional difference between the films 1 and 1' on both surfaces, and the film is more stable. Another advantage is that heat sealing can be performed.

[0059]

As described above, according to the present invention, there is no need for a separate spout made of a molded product or the like.
It can be manufactured with the same process as ordinary pouches with good productivity, easy to fill the contents, and when used, easily cut off the tip of the narrow width spout part provided in a part of the top of the pouch and open it The spout is automatically opened with excellent shape retention, so that the spout does not close in the middle of the spout and the contents can be spilled out even for small-bore bottles. The present invention provides an inexpensive pouch for refilling, which can be safely and easily transferred to the end without any difficulty, and which is excellent in usability, and a method for producing the same.

[Brief description of the drawings]

FIG. 1 is a front view showing the configuration of an embodiment of a refill pouch of the present invention.

FIG. 2 is a front view showing the configuration of another embodiment of the refill pouch of the present invention.

FIG. 3 is a view for explaining a method of an embodiment in which both sides of the spout are heat-sealed in the method for producing a refill pouch of the present invention. Sectional drawing of the principal part explaining the device to seal, (b)
FIG. 4 is a partial front view showing an upper heat seal pattern including a pouch outlet.

FIG. 4 is a view for explaining a method of another embodiment in which both sides of the spout are heat-sealed in the method of manufacturing a refill pouch of the present invention, wherein (A) shows both sides of the spout. Sectional view of the main part explaining the apparatus for heat sealing the
(B) is a partial front view showing an upper heat seal pattern including a pouch outlet.

FIG. 5 is a view for explaining a method of an application example in which both sides of the spout are heat-sealed in the method for producing a refill pouch of the present invention. Sectional view of the main part explaining the device to perform (b)
FIG. 4 is a partial front view showing an upper heat seal pattern including a pouch outlet.

[Explanation of symbols]

 Reference Signs List A rod-shaped body B rod-shaped protrusion C heat-seal type D seal receiving mold E center line of spout 1, 1 'film 2 bottom 3 bottom seal 4, 4, 4' body seal 5 spout 6a spout Part side seal part 6b Outlet part tip part seal part 6c Injection part shoulder part seal part 6d Injection part middle part seal part 7 Swelling part 8 Notch 9 Notch 10 Unsealed opening 11 Cutout line 100, 200 Refill pouches

Claims (6)

[Claims] 1. A pouch obtained by heat-sealing a laminated film mainly composed of plastic into a bag shape, wherein a part of an upper edge portion of the pouch has an outer periphery, that is, a tip portion, both side portions,
And a narrow width spout portion formed by heat-sealing the shoulder portion is provided, and of the two side films forming the spout portion, the size of one film is made larger than the other film, A pouch for refilling, wherein a spout is provided so that a void is formed in the pouch. 2. The pouch for refilling according to claim 1, wherein a cutout portion is provided on at least one side of the spout portion. 3. The refillable pouch according to claim 1, wherein an easy-opening means is provided at the spout. 4. The refillable pouch according to claim 1, wherein said pouch is a standing pouch. 5. A pouch body is formed by heat-sealing a laminated film mainly composed of plastic into a bag shape, and a part of an upper edge of the pouch is provided with an outer periphery, that is, a tip portion, both side portions, And a method for manufacturing a refill pouch in which a shoulder is heat-sealed to form a narrow width spout, wherein when the spout is heat-sealed, a spout is provided between the films on both sides of the opposing spout. Along the center line of the part, a rod having a required thickness is interposed, one film is made flat, and the other film wraps the rod, and at least both sides of the spout are heat-sealed. Then, after removing the rod-shaped body, by heat-sealing the tip and the shoulder of the spout, the size of one of the films on both sides forming the spout is smaller than that of the other film. Big Comb method of manufacturing a pouch refill, which comprises heat-sealing the outer periphery of the spout as the gap portion is formed inside. 6. A pouch body is formed by heat-sealing a laminated film mainly composed of plastic into a bag shape, and a part of an upper edge portion of the pouch has an outer periphery, that is, a tip portion, both side portions, And in the method of manufacturing a refill pouch to form a narrow width spout portion by heat sealing the shoulder portion, when heat sealing the spout portion, on one side of the film on both sides of the spout portion, Along the center line of the spout portion, a sealing receiving mold having a bar-shaped convex portion of a required height is arranged, and the film on both surfaces of the spout portion wraps around the bar-shaped convex portion. By heat-sealing both sides of the spout, and then heat-sealing the tip and the shoulder of the spout on a flat surface, the circumferential difference when the film on both sides of the spout wraps around the rod-shaped convex portion. By the dimension of one film, Cormorant larger than the one of the film,
A method for producing a refill pouch, wherein an outer periphery of a spout is heat-sealed so that a void is formed therein.