JP2006225001A - Refill pouch - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refill pouch in which fluid contents, such as liquid, viscous body, or powder, are hermetically packaged and transferred into another container when used, the refill pouch being designed such that safe transport free from a leak of the contents during the distribution is ensured, the leading end of its spout can be easily torn with fingers to open the spout, formation of a string-like fragment is prevented, and excellent hygiene is assured. <P>SOLUTION: The refill pouch 100 includes the narrow spout 6 formed by heat seals on both sides. The pouch 100 also has a rounded projection S on at least one of wall films and near the spout. The spout has a series of cutting lines 10 for opening the pouch. The series of cutting lines is composed of a combination of parallel straight or perforated cutting lines 10a and at least one curved cutting line 10b disposed between the parallel straight or perforated cutting lines so as not to cross any one of them. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a refillable pouch that hermetically wraps a fluid content such as a liquid, a viscous body, and a powder, and transfers the content to another container during use. More specifically, the present invention relates to a refillable pouch that can prevent generation of thread-like chips when the spout is opened with fingers, and is excellent in hygiene and easy opening.

  Conventionally, as a refillable pouch for hermetically wrapping liquid contents such as liquid, a standing pouch that is self-supporting and has some features as a three-dimensional container has been mainly adopted, and the contents when opened To make it safe to transfer to other containers without spilling the outside, the opening is not cut the entire top of the pouch, but a part such as the corner is cut out, or the width is narrowed to a part of the top of the pouch. A refilling pouch provided with an outlet portion, and a refilling pouch in which a separate spout made of a plastic molding or the like is attached to a part of the upper portion of the pouch by heat bonding have been adopted.

However, the refilling pouch in which the above-described separate spout is attached to a part of the upper portion of the pouch has an increased manufacturing process than before, and the spout itself is expensive.
In addition, even with a refillable pouch that has a narrowed spout part at the top of the pouch, the operability and safety when transferring the contents to another container can be improved to some extent. During the pouring, the mouth of the pouring outlet is difficult to open, and the flow is not stable during the pouring, and particularly when the remaining amount is low, the pouring outlet of the pouch is easy to close.

As shown in FIG. 4, as a refilling pouch that eliminates the above-mentioned drawbacks, a refill is provided with a narrow-width spout portion formed by heat seal portions on both sides, and the contents having fluidity are sealed and packaged inside. A pouch for refilling having a bulging portion which is a combination of flat surfaces and a cross-sectional shape in the width direction formed by a combination of straight lines on at least one wall surface film near the spout portion. It has been proposed (see, for example, Patent Document 1).
Furthermore, in the refilling pouch of Patent Document 1, for the purpose of facilitating opening by opening the tip of the spout part with fingers, the narrow spout part has a parallel straight line as the opening cut line. Alternatively, intermittent cuts (half cut lines) are provided.

Moreover, as shown in FIG. 5, as an opening break line in a conventional refilling pouch, the easy-open processing portion intersects at least one straight or broken line break and the straight or broken line break. A packaging bag composed of at least one straight or broken line has been proposed (see, for example, Patent Document 2).
Japanese Patent Application Laid-Open No. 11-349012 JP 2003-94532 A

  However, the refillable pouch according to Patent Document 1 or Patent Document 2 has a drawback in that it is inferior in safety and hygiene because thread-like chips are generated when the tip of the spout is cut and opened with fingers. .

  An object of the present invention is a refillable pouch for hermetically wrapping fluid contents such as liquids, viscous bodies, powders, etc., and transferring the contents to another container at the time of use. A refillable pouch that can be safely transported without leaking, and can be easily opened with the fingers when opening the bag, without generating thread-like chips and excellent hygiene. Is to provide.

  Therefore, in order to solve the above problem, the refillable pouch of the present invention has a narrow spout portion formed by the heat seal portions on both sides, and the refillable content in which the fluid content is sealed and packaged. In the pouch for use, at least one wall film in the vicinity of the spout portion has a bulging portion, and the spout portion is provided with an opening cut line, and the opening cut line is irradiated with laser light. And the opening cut line is between a plurality of parallel straight or broken lines and a plurality of parallel straight or broken lines, and does not intersect with the cuts, at least 1 Composed of a combination of curvilinear cuts in a book.

  According to the refilling pouch of the present invention, when opening the pouch, it is possible to easily open the tip of the spout portion provided at the corner portion of the upper portion of the pouch with fingers, and the thread-like chips No spout, excellent hygiene, and a bottle with a small caliber that has excellent shape-retaining properties that can easily flow into and out of the spout, even with highly viscous contents For example, it is possible to provide a refillable pouch that can be safely and easily transferred to the end, and that is excellent in productivity and productivity.

  FIG. 1 is a front view showing a configuration of an embodiment of a refill pouch according to the present invention, FIG. 2 is a partially enlarged view of the refill pouch of FIG. 1, and FIG. 3 is a refill pouch of the present invention. It is a figure which shows the pattern of the opening line for opening.

FIG. 1 is a front view showing the configuration of an embodiment of a refillable pouch 100 according to the present invention.
As shown in FIG. 1, a refillable pouch 100 according to the present invention is composed of two body members 5 and one bottom material using a composite film having at least one surface made of a sealant layer, The gusset part is formed by inserting a bottom material having a fold-like folded part on the inner side and folding the sealant layer on the lower side of the front and rear body members 5 facing each other with the sealant layer on the inner side. In addition, a semicircular cutout is provided in the vicinity of the lower ends on both sides of the bottom material folded inward, and heat sealing is performed at the bottom heat seal portion of the ship bottom, and both side edges of the body member 5 on the front and rear surfaces It is a packaging bag that is made into a standing pouch form by heat-sealing the part with a body heat-sealing part and leaving the upper end part as a filling port for contents.
In the above configuration, the shape of the pouch body is not limited to a standing pouch type pouch, and may be a flat pouch such as a three-side seal type or a four-side seal type. It is preferable because it is easy to handle and excellent in appearance.
A narrow spout portion 6 is formed in the upper corner portion of the pouch 100 by heat seal portions on both sides, and both sides thereof are cut out by the cutout portions 7a and 7b, and project into a neck shape. It is formed in the shape.
By adopting the configuration as described above, a narrow outlet is provided at the corner of the upper part of the pouch, and a notch is provided at least on one side thereof, so that the pouch is filled. When transferring the contents to another container such as a bottle, cut and open the tip of the spout and insert the spout into the mouth of the bottle, for example, or insert the cutout on the side of the spout Since the contents can be poured out while being applied to the mouth of the bottle, the outlet is stably fixed to the mouth of the bottle during the pouring, and the contents can be transferred safely.

FIG. 2 is a partially enlarged view of the refill pouch of FIG. 1, and FIG. 3 is a diagram showing a pattern of opening break lines of the refill pouch of the present invention.
As shown in FIG. 2 and FIG. 3, an opening cut line for facilitating the cutting and stabilizing the directionality is provided at the position of the cutting line connected to the notch 9.

In the present invention, it is sufficient that the opening break line 10 is provided without penetrating the laminated body, 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. .

As a method for forming such an opening line 10 for opening, various methods such as a needle punch method and an emboss roll method can be used.
In the present invention, it is preferably formed by laser processing.
By forming the cut by laser irradiation, it is possible to easily form the cut in a desired shape, and since no shavings are generated during the formation of the cut, the hygiene is excellent.
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.

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 is preferable to form the opening cut line by laser processing from the viewpoint that the opening cut line can be easily formed only in one layer by selecting the laser beam.

  That is, for example, when a carbon dioxide laser is used and the wavelength of the carbon dioxide laser beam is 10.6 microns, this laser beam is selectively absorbed by the nylon film, and linear low density polyethylene or ethylene-vinyl acetate copolymer is used. Most of the film is transparent. 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 that is a resin film having excellent strength is used as an outer layer. If a laminated body is used and laser processing is performed using a 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.

Thus, in the present invention, when forming the opening line 10 for opening, it is preferable to use laser processing, and it is particularly preferable to use a carbon dioxide laser, and more preferably, the wavelength is set. Processing is performed using a carbon dioxide laser beam of 10.6 microns.

When the opening cut line 10 is formed using laser light, it is necessary to process only at the spout portion, and the spout portion may be inclined upward, and a plurality of laser processing may be required. Therefore, it is preferable to perform processing by scanning with laser light. 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.

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.
The opening cut line formed in the vicinity of the tip of the spout part is as described above because the direction of tearing tends to become unstable when a later-described bulge is provided at the opening position of the spout part. It is preferable to use in combination with an opening cut line.

In the present invention, the opening cut line 10 is specifically defined between a plurality of parallel straight or broken lines (half cut lines) 10a and a plurality of parallel straight or broken lines. Therefore, it is necessary to be constituted by a combination with at least one curved cut 10b that does not intersect with the cut.
It is preferable to provide a plurality of parallel cut lines 10 for opening a plurality of straight lines or broken lines in parallel with each other, assuming that the tearing direction is deviated.
When the shape of the cut is between a plurality of parallel straight or broken lines and does not intersect with the cut, the tear direction and the cut (half-cut line) when opening with fingers ) Even if there is some deviation from the direction, the cut (half-cut line) direction does not cause a large deviation by hitting the curved cut formed between the parallel straight or broken cuts. In addition, it is possible to induce tearing with fingers smoothly and surely, and there is an advantage that thread-like chips are not generated from the torn portion and hygiene is excellent.
In the case of a conventional cut formed by a combination of a plurality of straight lines or broken lines, thread-like chips are generated from the torn portion, which is not preferable.

In the opening cut line 10 according to the present invention, the plurality of parallel straight or broken line cuts 10a are specifically formed at intervals of about 0.7 mm to 3.0 mm, The distance from the curved line 10b formed between the straight or broken line cuts is about 0.1 mm to 0.3 mm, and the height of the curve (distance between peaks and valleys) is 0.1 mm to 2 mm. It is preferable to be about 8 mm.
If the distance from the curved line 10b formed between the plurality of parallel straight or broken lines is more than 0.5 mm, the effect of inducing tearing with fingers smoothly and reliably cannot be obtained. If it is less than 0.1 mm, there is a possibility that the linear or broken line cut 10a and the curved line cut 10b may intersect each other due to laser processing.

  In the refilling pouch of the present invention, a bulge portion for naturally opening the spout formed when cut at the opening cut line is formed in the laminated film on at least one side of the spout portion. It is preferable.

  In this way, by providing the bulging portion in at least one laminate of the spout portion 6, the spout naturally opens when the opening cut line of the cut portion is cut, that is, since it has a natural opening property, it is sealed. This is preferable because there is no need to secure the opening of the spout when the transferred contents are transferred to a bottle or the like.

Moreover, it is preferable that this bulge part is extended from the spout part to the accommodating part in which the contents are sealed and packaged.
In this way, the bulging part extends from the spout part to the storage part, so that 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.
Moreover, the cross-sectional shape of the bulging portion is not particularly limited, but is preferably a trapezoid from the viewpoint of strong resistance to compression and excellent shape retention.
The bulge portion may have a shape having steps with different heights. By adopting this configuration, a resistance force and a restoring force against compression of the bulging portion are increased, and the shape retaining property is further improved along with the natural opening property of the spout.

As shown in FIG. 2, in the refillable pouch 100 according to the present invention, the bulging portion is formed on at least one wall surface film of the pouch until it exceeds the center line in the width direction of the pouch from the spout portion. The upper part of the bulge has a bulging part that curves downward in a curved manner at the middle part from there, and swells downward at the lower part, and has a large width and height at the spout part. Thus, the width and height can be gradually reduced, and the width and height can be constant from the curvilinear middle portion to the bottom.
By adopting the above-described configuration, the bulge portion provided on the wall film of the pouch mainly improves the natural opening property and shape retention of the spout portion at the upper portion thereof, that is, in the vicinity of the spout portion. From there to the middle part, it has the effect of a guiding part that smoothly flows the contents to the spout part, and the lower part has the effect of improving the pouch's form stability and independence It is.
In addition, such a bulging part may be provided only on one wall film of the pouch, but by providing symmetrically on both wall films, the front part of the spout part can be cut and opened. By this bulge portion, the spout portion that is automatically opened larger can be formed with good shape retention.
The bulging portion can be provided by a hot embossing method, a vacuum forming method, a compressed air / vacuum forming method, etc. Among them, the hot embossing method is preferable because it is excellent in reproducibility of fine patterns and productivity.

Although the bulge height of the bulge part provided in the said wall surface film is not specifically limited, In the spout part, about 1-7 mm is preferable at the highest part, and about 2-5 mm is more preferable.
When the height of the highest part is less than 1 mm, the effect on the natural opening is reduced, and when it exceeds 7 mm, there is no need for it, and the processing itself becomes difficult and the spout part is bulky. This is not preferable because handling properties of empty bags and stacking suitability in a filling and sealing machine are deteriorated.
The height of the portion other than the spout portion of the bulging portion is lowered to about 1.8 to 0.5 mm by, for example, inclining at an intermediate portion where the width is gradually tapered from the spout portion toward an obliquely downward direction. be able to.
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.

In the refilling pouch 100 according to the present invention, a notch 7b is provided near the tip of the spout 6.
At the time of trimming, a knob 8 and a V-shaped notch 9 are provided simultaneously.
In addition, the said knob | pick part 8 and the notch 9 may be provided in the notch part 7a side, and can also be provided in the both sides of the spout part 6. FIG. Further, the shape of the notch is not particularly limited, and specifically, a single-letter or V-shaped notch can be used.
As a result, when opening the spout portion, the pick portion can be picked with a finger, and the tip end portion of the spout portion can be cut off and opened by the opening cut line so that the opening operation can be performed more easily. Become.

  Embodiments such as a film used for producing the refillable pouch of the present invention and a method for producing the pouch will be described below. The film used for manufacturing the refill pouch of the present invention is not particularly limited as long as it is a laminated film mainly composed mainly of plastics, and any film can be used. From these, it is possible to freely select and use one suitable for the use conditions such as the type of contents to be packaged and the presence or absence of heat treatment after filling.

In the present invention described above, the laminated film used for producing the refillable pouch of the present invention can be a laminated film in which an outer layer, an intermediate layer (if necessary), and an innermost layer are laminated in order from the outside.
The resin having heat sealability used as the innermost layer may be any resin that can be melted by heat and fused to each other. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear ( (Linear) Low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer A resin composed of one or more of the above resins or a sheet obtained by filming them can be used, and the thickness is suitably 13 to 150 μm, preferably 15 to 100 μm.

  In addition, as a synthetic resin film used as an outer layer constituting the laminated film used in the manufacture of the refillable pouch of the present invention, since it becomes a basic material constituting the refillable pouch, mechanical, physical, chemical For example, a polyester resin, a polyamide resin, a polypropylene resin, a polycarbonate resin, a polyacetal resin, or the like can be used. Further, since the synthetic resin film used as the outer layer is generally printed on the inner layer side of the synthetic resin film, the synthetic resin film used as the outer layer is printable. Therefore, a stretched film stretched in the biaxial direction is preferable. The thickness of the film may be a thickness that can be kept to the minimum necessary with respect to strength, rigidity, etc. as a basic material, and about 9 to 25 μm is appropriate. The synthetic resin film may be a film coated with polyvinylidene chloride as needed, or a film on which an inorganic vapor deposition layer such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, or zirconium oxide is formed. It is good also as a structure which has barrier property. Moreover, synthetic paper, non-woven fabric, paper, cellophane, etc. can be used as needed.

The pattern layer is formed by printing a desired print pattern composed of characters, figures, symbols, patterns, etc. on any surface of the outer layer with any number of color inks.
The surface on which the printed pattern layer is formed may be formed on the outermost surface of the packaging bag, but it is preferable to print on the back surface of the outer layer used as the outermost surface, referred to as back printing. This is because the reverse printing has the effect of protecting the pattern layer and making the printing of the pattern viewed from the surface more beautiful and glossy.
The pattern layer may be formed by printing on any surface of the outer layer using a printing method such as gravure printing, offset printing, letterpress printing, screen printing, transfer printing, flexographic printing, or the like. it can.

  Further, in the present invention, an intermediate layer may be provided between the sealant layer and the outer layer of the refill pouch, and the intermediate layer is usually used as the refill pouch only with the sealant layer and the outer layer. It is provided when the function cannot be performed sufficiently. The functions of the intermediate layer include gas barrier properties, mechanical toughness, flex resistance, puncture resistance, impact resistance, wear resistance, cold resistance, heat resistance, chemical resistance, etc. These final functions required as a pouch are achieved by providing an intermediate layer. Examples of the base material used as the intermediate layer include metal foils such as aluminum, iron, copper, and tin, polyolefins such as polyethylene terephthalate, polyamide, polyethylene, and polypropylene, polyvinyl chloride, polycarbonate, polyvinyl alcohol, and ethylene- Films of saponified propylene copolymer, ethylene-vinyl acetate copolymer, etc. or films coated with polyvinylidene chloride on these, or deposition of inorganic substances such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide, etc. A film such as applied film or polyvinylidene chloride, paper, cellophane, synthetic paper or the like can be used. One or more of these substrates can be used in combination. Note that the thickness of the base material only needs to satisfy a function required for a refill pouch, and can be appropriately selected as necessary.

  In the present invention, as the above-mentioned various resin films or sheets, for example, one or more of the above-mentioned various resins are used, and an extrusion method, a cast molding method, a T-die method, a cutting method, an inflation method are used. -A film forming method such as other methods can be used.

  It should be noted that one or more of the above-mentioned various resins are used, and in forming the film, for example, film processability, heat resistance, weather resistance, mechanical properties, dimensional stability, antioxidant properties, slipperiness Various plastic compounding agents and additives can be added for the purpose of improving and modifying mold release properties, flame retardancy, antifungal properties, electrical properties, strength, etc. Can be optionally added from a very small amount to several tens of percent depending on the purpose. In the above, as a general additive, for example, a lubricant, a crosslinking agent, an antioxidant, an ultraviolet absorber, a light stabilizer, a filler, a reinforcing agent, an antistatic agent, a pigment, and the like can be used. Furthermore, a modifying resin or the like can also be used.

Examples of the method of laminating each of the base film layer, the intermediate layer, and the sealant layer include, for example, a wet lamination method, a dry lamination method, a solventless lamination method, an extrusion lamination method, and a coextrusion lamination. -It can be carried out by the method of inflation, the method of inflation, other methods.
Specifically, in the present invention, a dry laminating lamination method in which lamination is performed via a laminating adhesive layer or the like, or melting that is laminated through an anchor coating agent layer, a melt-extruded resin layer, or the like. A laminated material can be manufactured using an extrusion lamination method or the like.

In the dry lamination method described above, the adhesive constituting the laminating adhesive layer may be, for example, a polyvinyl acetate adhesive, a homopolymer such as ethyl acrylate, butyl, 2-ethylhexyl ester, or the like. Polyacrylic acid ester adhesive, cyanoacrylate adhesive, ethylene and vinyl acetate, ethyl acrylate, acrylic acid, methacrylic acid, etc. made of a copolymer of these with methyl methacrylate, acrylonitrile, styrene, etc. Ethylene copolymer adhesive made of copolymer with monomer, cellulose adhesive, polyester adhesive, polyamide adhesive, polyimide adhesive, urea resin or melamine resin Adhesives, phenolic resin adhesives, epoxy adhesives, polyurethane adhesives, Type (meth) acrylic adhesive, chloroprene rubber, nitrile rubber, rubber adhesive made of styrene-butadiene rubber, etc., silicone adhesive, alkali metal silicate, inorganic adhesive made of low melting point glass, etc. Adhesives such as other can be used. The composition system of the above adhesive may be any composition form such as an aqueous type, a solution type, an emulsion type, and a dispersion type, and the properties thereof are film / sheet type, powder type, solid type, etc. Any form may be used, and the bonding mechanism may be any form such as a chemical reaction type, a solvent volatilization type, a heat melting type, and a hot pressure type.
The adhesive can be applied by, for example, a roll coating method, a gravure roll coating method, a kiss coating method, a coating method such as others, or a printing method. -As a ting amount, 0.1-10 g / m < ² > (dry state) grade is desirable. In the present invention, when performing lamination by the dry lamination method, the surface of the lamination is optionally subjected to surface modification pretreatment such as corona discharge treatment, ozone treatment, or plasma discharge treatment in advance. Come.

Examples of the melt-extruded resin layer in the melt-extrusion laminating method include, for example, polyethylene resins, polypropylene resins, acid-modified polyethylene resins, acid-modified polypropylene resins, ethylene-acrylic acid or methacrylic acid copolymers, saps. 1 of thermoplastic resins such as phosphorus resin, ethylene-vinyl acetate copolymer, polyvinyl acetate resin, ethylene-acrylic acid ester or methacrylic acid ester copolymer, polystyrene resin, polyvinyl chloride resin, etc. A seed | species thru | or 2 or more types can be used. In the melt extrusion lamination method, in order to obtain stronger adhesive strength, for example, lamination can be performed via an anchor coating agent layer such as an anchor coating agent. Examples of the anchor coating agent include various aqueous or oil-based anchor coating agents such as organic titanium-based, isocyanate-based, polyethyleneimine-based, polyptadiene-based, etc. such as alkyl titanate. Can be used. The above-mentioned anchor coating agent can be coated using a coating method such as a roll coat, a gravure roll coat, a kiss coat, and the like. The amount is preferably 0.1 to 5 g / m ² (dry state). Thus, in the present invention, when performing the above-described lamination, if necessary, for example, pretreatment such as corona treatment, ozone treatment, or frame treatment is optionally applied to the surface of the substrate to be laminated. be able to.

In the present invention, the laminated film produced by laminating the respective layers through the adhesive layer as described above is used, and the sealant layer is disposed with the surface as the inner surface, and then the both end portions and the lower end portions of the overlapping portion. Etc., heat seal through a sealant layer to form a side seal portion and a bottom seal portion and an opening at the upper end thereof to produce a refill pouch according to the present invention. Can do.
In the bag making method, examples of a heat seal method include a bar seal, a rotary roll seal, a belt seal, an impulse seal, a high frequency seal, and an ultrasonic seal. -It can be carried out by a method such as

In the present invention, the refillable pouch according to the present invention manufactured by pouching as described above is filled with the contents from the opening provided at the upper end, and then the opening at the upper end is heated seal etc. By sealing with, a packaged product using the refillable pouch according to the present invention can be manufactured.
And, using the refillable pouch according to the present invention, for example, a packaged product manufactured by filling and packaging various articles such as foods and drinks, pharmaceuticals, reagent products, chemical products, cosmetics, miscellaneous goods, etc. Excellent barrier properties such as oxygen gas, water vapor, etc., printability, strength, rigidity, impact resistance, puncture resistance, heat sealability, filling / packaging suitability of the contents, storage suitability, etc. Can be opened with fingers smoothly and reliably along the half-cut line direction, and no thread-like chips are generated when tearing, providing excellent hygiene and high viscosity. This is a spout with excellent shape retention that can easily flow into and out of the spout, even with high contents, and it can be safely and easily transferred to the end even for small bottles. Can be used, raw Capable of producing a pouch for a refill excellent sex.

Next, the present invention will be described in further detail with reference to examples.
A biaxially stretched nylon film having a thickness of 25 μm and a linear low density polyethylene film having a thickness of 130 μm are used as a body member and a bottom material from the outside using a two-component curable urethane adhesive (amount applied: about 4 g). / M ² ) A laminate comprising two layers was prepared by a dry lamination method.

Next, this laminate is used, and has a spout as shown in FIG. 1 in the body part, and is formed by heat-sealing both side edges of the wall film 5 on the front and rear surfaces with the body seal part 3. The bottom 1 is formed in a gusset form by folding the bottom material film inward, and semi-circular cutouts are provided in the vicinity of the lower ends on both sides of the bottom material film folded inward. It is formed by heat-sealing at the seal portion 2, and its main body is formed into a standing pouch shape (width 130 mm, height 235 mm).
The spout as shown in FIG. 1 is a spout that is formed in the upper corner of the spout and faces obliquely upward, and has a shape that protrudes by trimming of the cut-out portions on both sides, and its outer edge is the spout It is formed by heat sealing at the part seal part.
Furthermore, a bulging portion was formed by embossing on the laminated film at a predetermined position from the spout portion to the bottom in the obliquely downward direction when it became a packaging bag. The bulging portion is formed so that a cross section in the height direction forms a trapezoid, and is formed so that the width and the height gradually decrease in a diagonally downward direction.

As an opening means that can be easily opened by hand, the opening position in the vicinity of the tip end portion of the spout portion is parallel to the five straight cuts 10a (half cut lines) and the center line of the spout portion. , And two curved cuts 10b that do not intersect with the five cuts on both sides.
A carbon dioxide laser with an oscillation wavelength of 10.6 μm (made by Coherent, DIAMOND G-50, rated output 50 W) and a galvano scanning module (made by General Scanning, USA) are used at the opening position near the tip of the refill pouch. Then, five straight cuts as shown in FIG. 3 (a) are formed in parallel at intervals of 1 mm, and two curved cuts (half cut lines) are formed on both sides of the central straight cut. In addition, it was formed so that the amplitude was 0.4 mm, and the distance between the linear cut and the curved cut (mountain and valley) was 0.3 mm so as not to cross each other.
The laser processing conditions were as follows: oscillation frequency: 3000 Hz, DUTY: 30%, scanning speed: 3000 mm / sec.
Thereafter, liquid detergent (500 ml) was filled as a content from the unsealed upper seal portion, and then the upper seal portion was sealed and sealed to prepare an easy-open refillable pouch 100.

The refillable pouch 100 obtained above can be easily opened with fingers at the correct position when opening, and does not generate thread-like chips when tearing, and has excellent hygiene. there were.
And when transferring the contents to, for example, a bottle, when the tip of the opened spout part is applied to the mouth of the bottle and the pouch is tilted, the opening opened in a funnel shape by the bulging part is shaped retaining Therefore, the content of the contents could be safely and easily transferred to the end without closing the spout during the pouring.
Further, since the pouch body is formed in a standing pouch form, the pouch body is self-supporting, easy to handle, and excellent in appearance.

It is a front view which shows the structure of the Example of the refillable pouch 100 which concerns on this invention. It is the elements on larger scale of the refilling pouch 100 of FIG. It is a figure which shows the pattern of the opening cut line of the refillable pouch 100 of this invention. (A) Front view which shows conventional refilling pouch 100 ', (b) It is a figure which shows the pattern of the break line for opening. It is a figure which shows the pattern of the opening cut line of the conventional pouch 100 'for refilling.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bottom part 2 Bottom heat seal part 3 Trunk part heat seal part 4 Upper heat seal part 5 Wall surface film 6 Outlet part 7a, 7b Notch part 8 Knob part 9 Notch 10 Uncut line 10a Straight line or broken line line 10b Curvature cut S Swelling portion 100 Refillable pouch 100 'according to the present invention Conventional refillable pouch

Claims (1)

In a refillable pouch that has a narrow width spout portion formed by heat seal portions on both sides, and the content having fluidity inside is hermetically packaged,
Having at least one bulging portion on the wall film in the vicinity of the spout portion;
And the cut line for opening is provided in the spout part,
And the opening cut line is formed by laser light irradiation,
In addition, the opening cut line is between a plurality of parallel straight or broken line cuts and the plurality of parallel straight or broken line cuts, and does not intersect with the cuts. Refillable pouch characterized by comprising a combination of cuts.

Images