JP2003267404A - Packaging container with discharging port - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging container with a discharging port with which content is stably discharged without breakage in a discharging port when the content is refilled, and for which production cost is not increased without causing pinholes or the like. <P>SOLUTION: This packaging container 1 with the discharging port has a nozzle 50 at the corner end of an upper edge 16. The nozzle part 50 is provided with a plate-shaped solid resin 30 formed through discharging and application of a UV-curing resin or the like, at the external surface of the nozzle 50, and a protrusion 25 expanding outwardly is formed in this position. The tip of the protrusion 25 is positioned forwardly from a cutting line 20a, and the tip of the plate shaped solid resin 30 is positioned 1 mm inwardly from the cutting line 20a and the rear end of the solid resin 30 extends toward the inside of the container from a base line 32a. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag for storing liquid detergent, shampoo, etc., and more particularly to a packaging container for refilling having a spout for refilling contents into another container, Regarding the shape of the spout.

[0002]

2. Description of the Related Art In recent years, due to environmental problems related to the increase of waste, for the purpose of resource saving and reduction of waste, a peripheral edge of a plastic film-based laminated packaging material of two or more layers is heat-bonded to form a liquid. As a bag for storing toiletries such as detergent and shampoo, when using it, the protruding spout is cut with scissors and the contents are easily poured into a plastic bottle with a pump dispenser, for example, with a spout that can be refilled A lot of refill bags (mostly self-standing standing pouches) are used.

As the above-mentioned refill bag with a spout, it is required that the contents can be easily poured out and the contents can be poured out while maintaining a stable flow until the end. As such a refill bag with a spout, as disclosed in, for example, Japanese Patent Laid-Open No. 5-13269, a hollow cylinder made of plastic is formed on the inner surface of the spout projecting at the corner of a soft resin film packaging bag. With a nozzle-shaped nozzle, and Japanese Patent Laid-Open No. 8-25
As disclosed in Japanese Unexamined Patent Publication No. 38-38, there is one in which a hollow (semi) cylindrical spouting conduit is formed on the inner surface of a spout that protrudes at the corner of a soft resin film packaging bag.

However, in the case where the hollow molding made of plastic is provided on the inner surface of the spout, a special step such as heat fusion for molding and attachment of the molding is required, so that the cost is high and the heat fusion is high. There has been a problem that pinholes are generated in the resin film packaging bag due to heating and pressurization in the wearing process.

In order to solve the above-mentioned cost increase, for example, as disclosed in JP-A-6-127560, a soft resin film packaging bag is swollen outward at a spout projected at a corner. Those provided with a bulge, JP-A-7-2260 and JP-A-11-114.
As disclosed in Japanese Unexamined Patent Publication No. 98-9898, an opening assisting mechanism formed by embossing outwardly on a center line of a spout projecting at a corner of a soft resin film packaging bag and an outwardly convex adjacent to both sides thereof. Some have a bending prevention mechanism that is embossed.

However, in the case where the soft resin film spout is provided with a convex embossing as a bulge outwardly bulging, there is a problem that the manufacturing cost increases and a pinhole is generated in the packaging bag. However, after all, since it is an opening assist mechanism and a bending prevention mechanism by embossing a soft resin film, it is easy for the bending point to bend at the spout, especially when trying to pour with strong pressure There was a problem that the spout would be blocked from the starting point.

[0007]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems of the prior art. The problem is to provide a packaging container with a spout for storing contents such as liquid detergent and shampoo. , When refilling the contents into other bottles, etc., the contents can be stably poured out without clogging due to breakage at the pouring outlet, and the manufacturing cost does not increase It is to provide a packaging container with a spout that does not have a pinhole or the like.

[0008]

In order to achieve the above object in the present invention, first, in the invention of claim 1, at least the innermost layer is a sealant layer, and two front and back surfaces made of a rectangular composite film are used. The side sheet is sealed by both side edges and the sealant layer surface of the upper edge, and has a protruding nozzle portion as a spout for pouring out the contents by cutting the tip with a cutting line at one corner end of the upper edge. Then, in a packaging container with a spout, in which a bottom sheet having substantially the same configuration as the side sheet is sealed at a sealant layer surface of a lower edge of the side sheet made of the composite film, it projects at one end of the upper edge. A thick film solid resin formed by discharging and coating is formed on at least one of the inner surface or the outer surface of the two side sheets forming the nozzle portion, and the outer surface is formed at a position corresponding to the thick film solid resin. Bulge towards It is obtained by the spout with the packaging container, characterized in that part is formed.

According to the first aspect of the present invention, discharge / coating is performed on at least one of the inner surface or the outer surface of the two side sheets forming the nozzle portion projecting at one corner end of the upper edge of the container. Since a thick film solid resin consisting of is formed, and a convex portion that swells outward is formed in this portion, when refilling the contents into another bottle, the nozzle may break. Since the pouring outlet is not blocked, stable pouring can be performed, and the thick film solid resin is formed on at least one of the inner surface and the outer surface of the side sheet,
It is formed by ejection or coating, and it is obtained by forming a convex part that bulges outward at this part, so the manufacturing cost does not increase for processing to the nozzle part, and heating for attaching a hollow molded product inside the nozzle part like the conventional It is possible to provide a packaging container with a spout that does not generate pinholes or the like due to fusion.

Further, in the invention of claim 2, the tip of the convex portion bulging outward is on the tip side of the cutting line for cutting the nozzle portion, and the tip of the thick film-like solid resin is the cutting line. The packaging container with a spout according to claim 1, wherein the packaging container with a spout is located slightly inside and a predetermined length from the base line of the nozzle portion whose rear end projects, and is inside the container.

According to the second aspect of the present invention, since the tip of the convex portion which bulges outward is on the tip side of the cutting line for cutting the nozzle portion, the convex portion which bulges outward when cut along the cutting line. A pouring port is formed in an open state, so that the contents can be easily poured out, and the tip of the thick film solid resin is
Since it is slightly inside of the cutting line, the thick film solid resin can be easily opened without disturbing the opening of the spout for cutting along the cutting line, and the thick film solid resin By forming the rear end inside the container with a predetermined length from the base line of the easily breakable nozzle part, it is possible to obtain a packaging container with a spout that can prevent the nozzle part from being broken from the vicinity of the base part.

Further, in the invention of claim 3, the thick film-like solid resin is an ultraviolet curable resin, a hot melt type resin or a melt extruded polyethylene resin. It is a packaging container with a spout.

According to the third aspect of the invention, the thick film solid resin is an ultraviolet curable resin, a hot melt resin or a melt extruded polyethylene resin, and by using them, coating or ejection is performed. Since it can be solidified and can be easily adhered to the nozzle portion of the packaging container by irradiation with ultraviolet rays or cooling, it is possible to provide a packaging container with a spout that does not increase the manufacturing cost.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. The present invention relates to, for example, a packaging container (1) with a spout for storing a liquid detergent or the like as shown in the perspective view of FIG. 5, and particularly to both sides of a square side surface sheet (10). Edge (12) and top edge (16)
Of the sealant layer surface of the upper edge (16) of the upper edge (16) is cut along the cutting line (20a) to serve as a spout (20) for pouring out the contents. ) And the non-adhesive part (23) (5)
0) and the bottom sheet (18) is sealed by the sealant layer surface of the lower edge (14) of the side sheet (10), particularly the nozzle part (50) thereof. ) Is related to the shape.

Therefore, first, in the invention according to claim 1, as shown in the front view of FIG. 1, for example, a nozzle portion (50) protruding from one corner end of the upper edge (16) of the packaging container is provided. A thick film solid resin (30) is formed on the outer surface of the nozzle portion (50), and a convex portion (25) bulging outward is formed at that portion.
As shown in FIG. 2 showing the cross section of the BB surface of FIG. 2, the convex portions (25) bulging outward of each of the front and back side sheets (10).
The thick film solid resin (30) is formed on the outer surface of the sheet, and the thick film solid resin (30) is formed on one side sheet (10) of the front and back sheets. It can also be the outer surface only.

As shown in the front view of FIG. 3, the thick film solid resin (30) is formed, for example, on the inner surface of the nozzle portion (50) by the thick film solid resin (30). And a convex portion (25) bulging outwardly is formed in that portion, and as shown in FIG. 4 showing a cross section of the BB plane of FIG. The thick film solid resin (3
0) is formed, and the thick film-like solid resin (30) may be formed only on the inner surface of one of the two side sheets (10).

Further, in the invention according to claim 2,
As shown in FIGS. 1 and 3, the nozzle portion (50)
The tip of the convex portion (25) that swells outwardly has a cutting line (20).
The convex portion (2) provided on the tip side of a) and bulging outwardly
The tip of the thick film solid resin (30) provided at a position corresponding to 5) is located about 1 mm inside the cutting line (20a). The end is a base line (32) connecting both bases (32) of the nozzle part.
It is provided so as to be inside the container with a predetermined length from a).

As described above, the convex portion (25) bulging outwardly
The tip of the cutting line (20a) is provided on the tip side of the cutting line (20a), so that the cutting line (20
When a) is cut, for example, as shown in the perspective view of FIG.
Since the pouring port (20) in which the cut portion is opened by the convex portions (25) bulging outward on the front and back sides is formed, the nozzle portion (50) can be easily ejected. The rear end of the convex portion (25) bulging outward is not particularly limited, but as shown in FIG. 1, for example, extends rearward from the base line (32a) of the nozzle portion toward the center of the container. It is more preferable to provide it at the point of contributing to prevention of breakage from the vicinity of the base (32).

Further, as described above, the thick film solid resin (3
By setting the tip of 0) to be about 1 mm inside the cutting line (20a), the rod-shaped solid resin (30) does not get in the way when the cutting line (20a) is cut and used as a spout. By forming the rear end of the thick film-shaped solid resin (30) which can be easily opened, and which has a predetermined length from the base line (32a) of the nozzle portion, which is easily broken, toward the inner center of the container. It is possible to prevent breakage from the vicinity of the base (32).

More specifically, the thick-walled solid resin (30) has a predetermined length, and the packaging container (1) with a spout is provided.
Capacity, the size of the nozzle portion (50), and the surface on which the thick film-shaped solid resin (30) is formed. For example, as shown in FIG. 1, the thick film-shaped solid resin (30) is a side surface. The length (M) from the tip of the nozzle part (50) to the cutting line (20a) formed on the outer surface of the sheet (10).
Is 11 mm, and the base line (32
In the case of a packaging container (1) with a spout having a length (K) up to a) of 20 mm, the total length (H) of a thick film solid resin (30) whose tip is 1 mm inside the cutting line (20a).
Is about 65 mm, that is, the length (so-called predetermined length) from the base line (32a) to the rear end of the thick film solid resin (30) inward is 4 (65 + 1 mm-20).
The distance of about 6 mm, of course, prevents breakage from the vicinity of the base (32) when pouring out the contents,
Further, the side surface sheet (10) of the nozzle part (50) does not swell, so that the non-bonded part (2) of the nozzle part (50) is prevented.
The tip closing point of 3) can be moved to the tip direction from the conventional position, and the cutting line (20a) can be set to the tip direction more. Therefore, if the total length (H) of the thick film-like solid resin (30) is shortened to about 40 mm, it is possible to prevent breakage from the vicinity of the base portion (32) when pouring out the contents, but the nozzle portion ( The swelling of the side surface sheet (10) of 50) tends to be large, and it tends to be difficult to set the cutting line (20a) in the distal direction.

Furthermore, in the invention according to claim 3, as shown in FIG. 1, for example, the thick film solid resin (30) is used as an ultraviolet curable resin, a hot melt resin or a melt extruded polyethylene resin. These resins are applied by thick film printing or by jetting with a nozzle or the like, and solidification of them is performed by UV irradiation for UV curable resin, and immediately for hot melt resin or melt extruded polyethylene resin by cooling. It is solidified (cured) and can be easily adhered to the nozzle portion (50) of the packaging container.

Examples of the ultraviolet curable resin include
Mainly composed of polyol, polyester, urethane, and epoxy acrylates as photopolymerizable materials,
Printing inks (paints) such as benzophenones, benzoin ethers, screen inks composed of diazonium and Lewis acid complexes as photopolymerization initiators of about 5 to 10% are preferably used, and have a screen printing method or nozzles. After partial application with an applicator, a thick film solid resin (30) can be obtained by irradiating with ultraviolet rays from a metahalide lamp, a xenon lamp or the like.

As the hot melt type resin,
For example, the most frequently used ethylene-vinyl acetate copolymer (EVA) at present is mentioned, and other polyethylene, atactic polypropylene (APP), ethylene-ethyl acrylate copolymer (EEA), polyamide,
There are polyesters and the like, and those obtained by adding rosin or a derivative thereof, a pinene-based resin tackifier, waxes, etc. to these thermoplastic resins are preferably used, for example, after partial application with an applicator having a nozzle, cooling or at room temperature. The solid resin (30) in the form of a thick film can be obtained by leaving it as it is.

In the case of the melt-extruded polyethylene resin, the polyethylene resin melted by heat is applied in the same manner as the above hot-melt type resin, for example, by partially applying it with an applicator having a nozzle, and then cooling or leaving it at room temperature to form a thick film. Solid resin (30).

A convex portion (2) bulging outward to the nozzle portion
Examples of the formation of 5) include an embossing method in which the composite film before bag making is heated and pressed against a mold having a desired shape, and a method in which deep drawing is performed by vacuum or pressure forming, but the work is easy. The former embossing method is preferably used. The shape (dimensions, etc.) of the embossing type used at this time varies depending on the capacity of the packaging container with spout (1), the size of the nozzle part (50), etc., but as shown in the example of FIG. 1, for example,
The length (M + K) from the tip to the base (32) is 31mm
In the case of the nozzle portion (50) of No. 5, as shown in the plan view of FIG. 8A, the length (N) of the bottom portion is 55 mm and the width (W1) is 8 mm.
mm, the width of the top surface (W2) is 4 mm, and B in FIG. 8 (a)
As shown in FIG. 8B as a cross section of the −B plane, when embossing is performed using a molding die (5) having a height (T1) of 4 mm, as shown in the side sectional view of FIG. 8C. , The side sheet (10) made of a composite film has a depth (T2) of 2.5.
A convex portion (25) bulging outward of mm was formed. In the case where a plate-shaped solid resin (30) made of an ultraviolet curable resin having a discharge amount of 100 to 300 g / m 2 is previously formed on the outer surface of the convex portion (25) which swells outwardly, as shown in FIG.
The strength (film rigidity) against bending at the base line (32a) shown in (4) was excellent. The thick film solid resin (30) may be formed after the protrusions (25) are formed by embossing. However, the conditions for excellent film rigidity vary depending on the type and coating shape of the ultraviolet curable resin, and thus the ejection amount is not limited.

As the cutting line (20a) constituting the packaging container (1) with a spout of the present invention, a line is printed to indicate that scissors are to be inserted, or a side sheet ( 10) The surface may be half-cut by a carbon dioxide laser or a rotary blade to indicate tearing, and in this case, a V notch (V) may be provided at the end of the cutting line (20a). .

The material composition of the composite film constituting the packaging container (1) with a spout of the present invention may be a single-layer plastic film consisting of only a sealant layer, and the single-layer plastic film may be, for example, crystalline polypropylene. , Crystalline propylene-ethylene copolymer, low-density polyethylene, medium-density polyethylene, high-density polyethylene, ethylene-vinyl acetate copolymer, ion-crosslinked olefin copolymer, and other polyolefins.

Further, as shown in the side sectional view of FIG. 7, it is common that the composite film (40) is laminated in multiple layers, and the surface layer (42) thereof has a thickness of, for example, about 12 μm. Polyethylene terephthalate film,
A nylon film or the like is used, and printing including cutting support lines and the like is performed on the back surface thereof.

Further, as the sealant layer (41) constituting the composite film (40), a single layer plastic film such as low density polyethylene having a thickness of about 50 μm is used, and a surface layer is formed through an adhesive for dry lamination. It is obtained by laminating with the film of (42) or laminating by the melt extrusion lamination method of the low density polyethylene resin or the like.

Depending on the contents to be further filled, 3 layers, 4 layers
It may be a layer, and for example, in the case of imparting strength to a packaging container with a spout, a surface layer (42) and a sealant layer (4
In the case of 1), stretched nylon (ON) having a thickness of about 12 μm is laminated as the intermediate layer (43), or in a pouch with a spout that requires gas barrier properties, for example, a surface layer (42) and a sealant layer (42). 41), aluminum foil (7 μm) / polyethylene terephthalate film (12 μm) or ceramic vapor deposition film (eg SiO 2)
2 Deposition layer / polyethylene terephthalate film (1
2 μm)) can be used as the intermediate layer (43) to form a composite film (40) laminated.

[0031]

Since the present invention has the above-mentioned constitution, it has the following effects. That is, in the invention according to claim 1, at least the innermost layer is a sealant in order to achieve the above-mentioned object in the present invention. Two side sheets of the front and back sides are sealed with both side edges and a sealant layer surface of the upper edge, and a protrusion is formed as a spout for pouring out the contents by cutting a tip with a cutting line at one corner end of the upper edge. In a packaging container with a spout having a nozzle portion and a bottom sheet having substantially the same configuration as the side sheet is sealed at the sealant layer surface of the bottom edge of the side sheet made of the composite film, one of the upper edges A thick film solid resin formed by discharge / application is formed on at least one of the inner surface or outer surface of the two side sheets forming the nozzle portion protruding at the end, and corresponds to this thick film solid resin. Since there is a convex part that bulges outward at the position where the contents are filled, the nozzle will not break when the contents are refilled into another bottle and the pouring outlet will not be blocked, so a stable pouring can be achieved. In addition, a thick film-like solid resin is formed on at least one of the inner surface and the outer surface of the side surface sheet by discharging or coating, and is obtained by forming a convex portion that bulges outward at this portion. It is possible to provide a packaging container with a spout that does not require manufacturing cost for the above process and does not generate pinholes and the like due to heat fusion as in the conventional case.

Further, in the invention according to claim 2, when the tip of the convex portion which bulges outward is located on the tip side of the cutting line for cutting the nozzle portion, when the cutting line is cut, it is outward. By opening the spout in the bulging convex portion, it is possible to easily pour out the contents, and by making the tip of the thick film solid resin slightly inside the cutting line, At the time of opening the spout for cutting along the cutting line, the thick-film solid resin can be easily opened without obstructing it, and the rear end of the thick-film solid resin is easily broken. By making the inside of the container a predetermined length from the line, it is possible to obtain a packaging container with a spout that can prevent the nozzle part from being bent from near the base part.

Further, in the invention according to claim 3, the thick film solid resin is an ultraviolet curable resin, a hot melt resin or a melt extruded polyethylene resin, and coating and discharging are performed using the resin. It is possible to provide a packaging container with a spout which is solidified immediately by irradiation with ultraviolet rays or cooled to solidify, can be easily adhesively formed on the nozzle portion of the packaging container, and does not increase the manufacturing cost.

Therefore, the present invention is a packaging bag for containing liquid detergent, shampoo, etc., and in particular, it has excellent practical effects as a packaging container for refilling with a spout for refilling contents into another container. Exert.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a packaging container with a spout according to the present invention.

FIG. 2 is a sectional view taken along the line BB of FIG. 1 for explaining an embodiment of the packaging container with a spout according to the present invention.

FIG. 3 is an explanatory view showing another embodiment of the packaging container with a spout according to the present invention on the front side.

4 is a cross-sectional view taken along the line BB of FIG. 3 for explaining another embodiment of the packaging container with a spout according to the present invention.

FIG. 5 is a perspective view illustrating an embodiment of a packaging container with a spout according to the present invention.

FIG. 6 is a perspective view for explaining an embodiment of the vicinity of the spout of the packaging container with spout of the present invention.

FIG. 7 is an explanatory view showing an example of a composite film constituting a packaging container with a spout of the present invention in a side section.

8A and 8B are diagrams illustrating an embodiment of processing of a nozzle portion of a packaging container with a spout according to the present invention, FIG. 8A is a plan view of a molding die, and FIG. 8B is a plan view of FIG. It is a BB plane sectional view,
(C) is a side sectional view of a convex portion formed by the mold.

[Explanation of symbols]

1 ... Packing container with spout 5 Mold 10 ... Side sheet 12 ... Side edge 14 ... Bottom edge 16 ... Upper edge 18 ... Bottom sheet 20 ... pouring outlet 20a ... Cutting line 22 ... Seal part 23 ... Non-adhesive part 25 ... Projections that bulge outward 30 ... Thick film solid resin 32 ... Base 32a ... Base line 40 ... Composite film 41 ... Sealant layer 42 ... Surface layer 43 ... Middle class 50 ... Nozzle part H: Total length of thick film solid resin K: Length from cutting line to base line M: Length from nozzle tip to cutting line N: Length of bottom of mold T1 ... Height of mold T2: Height of the convex part that bulges outward V ... V notch W1 ... width of the bottom of the mold W2 ... Width of the top surface of the mold

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3E064 AB23 BA25 BB03 BC18 EA12                       FA04 FA05 HM01 HN05 HS04                       HS05

Claims (3)

[Claims] 1. At least the innermost layer is a sealant layer,
In order to pour out the contents by sealing both side edges of the two side sheets made of a rectangular composite film and the sealant layer surface of the upper edge, and cutting the tip at one corner end of the upper edge with a cutting line. In a packaging container with a spout having a protruding nozzle portion serving as a spout, and a bottom sheet having substantially the same configuration as the side sheet is sealed at a sealant layer surface of a lower edge of the side sheet made of the composite film , A thick film solid resin formed by discharging and coating is formed on at least one of the inner surface or the outer surface of the two side sheets forming the nozzle portion projecting at one end of the upper edge. A packaging container with a spout, characterized in that a convex portion that bulges outward is formed at a position corresponding to a film-shaped solid resin. 2. The tip of the outwardly bulging convex portion is on the tip side of a cutting line for cutting the nozzle portion, and the tip of the thick-film solid resin is slightly inside the cutting line, and its rear end. The packaging container with a spout according to claim 1, wherein the packaging container with a spout is located inside the container with a predetermined length from the base line of the nozzle portion from which the is protruding. 3. The thick film solid resin is an ultraviolet curable resin, a hot melt resin or a melt extruded polyethylene resin.
The packaging container with the spout described.