HK1148252B - Distribution packed body and distribution packed body stuffing product - Google Patents

Description

Distribution package and packaged product thereof

Technical Field

The present invention relates to a dispensing package for packaging various liquid materials and paste materials.

Background

Such dispensing packages are known: by a simple operation of folding the lid with one hand and squeezing the lid in this state, the filled contents (for example, liquid foods such as jam (jam), ketchup (ketchup), and seasoning (dressing)) can be squeezed out (patent document 1). The dispensing package has a structure in which a hard material lid having a folding line provided with a half-cut part (ハ - フカツト part) at the center of the surface and a convex part forming a discharge port when being folded in use are welded to a flexible container body having a bag part (ポケツト part) for containing the contents. Specific examples of the hard material constituting the cap include polyethylene, polyethylene terephthalate, and polystyrene copolymer.

However, since the oxygen barrier properties of these synthetic resins listed as specific examples are not sufficient, there is a problem that the contents of the dispensed package may be oxidized and deteriorated by oxygen permeating from the lid.

Therefore, in order to prevent oxygen from permeating through the lid, it is proposed to use a combination of an ethylene-vinyl alcohol copolymer resin (EVOH) layer having a thickness of 2 to 15 μm and exhibiting a good oxygen barrier property and a polystyrene resin (PS) layer exhibiting a good openability (patent document 2). In this case, when the fold line is formed by providing the half-cut portion on the front surface side of the lid, the PS layer is disposed on the front surface side of the lid, the EVOH layer is disposed on the content side, and the half-cut portion is designed so as not to reach the EVOH layer, in order not to deteriorate the oxygen barrier property of the EVOH layer.

Patent document 1: japanese patent No. 3140016

Patent document 2: japanese patent laid-open publication No. 2006 and 35449

Disclosure of Invention

However, the dispensing package disclosed in patent document 2 does have good opening properties and can prevent oxygen from permeating through the lid to some extent, but when the contents which are very easily oxidized are filled and left for a long time, there is a problem that the quality of the contents is deteriorated by oxygen. Therefore, it is required to prevent oxygen from permeating through the lid of the dispensing package at a higher level.

The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a dispensing package which can prevent oxygen from permeating through a lid at a higher level without impairing the opening property, the dispensing package having a structure in which a hard material lid is welded to a flexible member container body, wherein the hard material lid has a bending line provided with a half-cut portion (ハ - フカツト portion) at the center of the surface, and has a convex portion which forms a discharge port when bent, and the flexible member container body forms a bag portion (ポケツト portion) for containing the contents.

The present inventors tried to make the thickness of the EVOH layer constituting the lid of the dispensing package thicker than 15 μm of patent document 2, under the assumption that if the thickness of the EVOH layer is increased, the oxygen barrier property thereof is improved. However, such problems are faced: if the EVOH layer is thicker than 15 μm, the EVOH layer will stretch when the lid is folded, and the half-cut portion will not be broken, but rather the opening properties will be impaired, and it is not practically usable as a dispensing package. Accordingly, when the PS layer is disposed on the content side by reversing the positional relationship between the PS layer and the EVOH layer, it has been found that the oxygen barrier property of the lid of the dispensing package is unexpectedly improved and the opening property of the dispensing package is not lowered even in the half-cut portion formed in the EVOH layer, and the present invention has been completed.

That is, the present invention provides a dispensing package comprising a rigid lid body and a flexible container body, wherein a peripheral edge portion of the flexible container body is welded to a back surface of the rigid lid body, the rigid lid body has a bending line having a half-cut portion formed on a surface side and a convex portion forming a discharge port when bent at a central portion of the surface, and the flexible container body has a bag portion for containing contents,

the hard cover is formed of a hard composite sheet having a thickness of 250 to 700 [ mu ] m, the hard composite sheet being formed by sequentially laminating a print-receiving layer, a hard intermediate layer, and a cover sealing layer that is the back surface of the hard cover,

the hard intermediate layer comprises an ethylene-vinyl alcohol copolymer resin layer and a polystyrene resin layer having a thickness of 150 to 500 [ mu ] m,

at least the ethylene-vinyl alcohol copolymer resin layer is disposed closer to the print-receiving layer side than the polystyrene resin layer.

The present invention also provides a dispensing package packaged product obtained by filling a liquid or paste material into a bag portion of a flexible container body of the dispensing package.

The hard lid constituting the distribution package of the present invention is formed of a hard composite sheet in which a print-receiving layer, a hard intermediate layer and a lid sealing layer to be the back surface of the hard lid are laminated in this order, the hard intermediate layer having a polystyrene resin and an ethylene-vinyl alcohol copolymer resin layer disposed closer to the print-receiving layer side than the polystyrene resin layer. Therefore, the oxygen barrier property of the hard cover is improved as compared with the case where the polystyrene resin layer is disposed closer to the print-receiving layer side than the ethylene-vinyl alcohol copolymer resin layer. Further, since the ethylene-vinyl alcohol copolymer resin layer itself is cut by the half-cut portion, there is no case where the opening property of the distribution package is lowered even if the thickness thereof is increased.

Drawings

Fig. 1 is a perspective view of a dispensing package of the present invention.

Fig. 2 is a cross-sectional view of a rigid composite sheet provided with a half cut for forming a rigid lid of the dispensing package of the present invention.

Fig. 3 is a cross-sectional view of a flexible composite film used to form the flexible container body of the dispensing package of the present invention.

Fig. 4 is a cross-sectional view of a flexible composite film used to form the flexible container body of the dispensing package of the present invention.

Description of the symbols

10 hard cover

11 surface of hard cover

12 bending line

13 convex part

14 print receptive layer

15 hard intermediate layer

15a polystyrene resin layer (PS layer)

15b ethylene-vinyl alcohol copolymer resin layer (EVOH layer)

16 cap sealing layer

17 half-cut part

20 Flexible container body

21 bag part

22 surface protective layer

23 oxygen barrier layer

23a oxygen barrier outer layer (EVOH outer layer)

23b oxygen barrier inner layer (EVOH inner layer)

23c interlayer

24 container body sealing layer

100 dispensing package

200 hard composite sheet

300 Flexible composite film

Detailed Description

Hereinafter, the dispensing package of the present invention will be described with reference to the drawings.

As shown in fig. 1, a dispensing package 100 of the present invention includes a rigid lid body 10 and a flexible container body 20, the rigid lid body 10 has a bending line 12 and a convex portion 13 at a central portion of a surface 11 thereof, the bending line 12 has a half-cut portion formed on a surface side thereof, and the convex portion 13 forms a discharge port when bent. The outer shape of the dispensing package of the present invention may be the same as that of a conventional dispensing package.

The term "rigid" of the rigid lid body 10 means a hardness which is relatively harder than the flexible container body 20, can be bent at a bending line by pinching the dispensing package 100 with a finger, and can open the convex portion 13. The term "flexible" of the flexible container body 20 means that the flexible container body exhibits flexibility relative to the rigid lid body 10, and when the dispensing package 100 is folded at a folding line by being pinched by fingers, the flexible container body is deformed so as to be crushed by the pressing force of the folded rigid lid body 10, and the contents can be discharged from the convex portion 13 of the opening.

The "central portion" of the surface 11 of the hard cover 10 is a region including a line connecting midpoints of opposing long sides when the hard cover is rectangular, a region including a line or a diagonal line connecting midpoints of opposing sides when the hard cover is square, a region including a short diagonal line when the hard cover is rhombic, a region including a straight line passing through the center of a circle when the hard cover is circular, or a region including a straight line passing through the center of a long diameter and perpendicular to the long diameter when the hard cover is elliptical, but the present invention is not limited thereto.

As shown in fig. 2, the hard cover 10 is formed of a hard composite sheet 200, and the hard composite sheet 200 is formed by sequentially laminating a print-receiving layer 14, a hard intermediate layer 15, and a cover sealing layer 16 that is the back surface of the hard cover 10. The hard intermediate layer 15 has a polystyrene resin layer (PS layer) 15a and an ethylene-vinyl alcohol copolymer resin layer (EVOH layer) 15 b. The half-cut portion 17 is formed on the surface side of the hard lid body 10 and extends beyond the EVOH layer 15b to reach the PS layer 15 a. That is, at least the EVOH layer 15b is disposed closer to the print-receiving layer 14 side than the PS layer 15 a. Further, an arbitrary resin layer may be interposed between the PS layer 15a of the hard intermediate layer 15 and the lid sealing layer 16 within a range that does not impair the effects of the present invention such as the aperture opening property.

The flexible container body 20 has a bag portion 21 for containing contents such as food, and a peripheral edge portion (not shown) of the flexible container body 20 is welded to the back surface of the hard lid body 10. The flexible container body 20 forming the bag portion 21 may be provided, for example, 1 over the bending line 12 and 1 or more on both sides of the bending line 12, depending on the purpose of use of the distribution package 100. In addition, the pocket portions 21 located at both sides of the bending line 12 may communicate.

As shown in fig. 3, such a flexible container 20 is formed of a flexible laminate film 300, in which the surface protective layer 22, the oxygen barrier layer 23, and the container body sealing layer 24 in contact with the contents and welded to the rigid lid body 10 are laminated in this order in the flexible laminate film 300. As shown in fig. 4, the oxygen barrier layer 23 may be formed by sandwiching an interlayer 23c between an oxygen barrier outer layer 23a on the surface protective layer 22 side and an oxygen barrier inner layer 23b on the container body sealing layer 24 side. By making the oxygen barrier layer 23 multi-layered, the oxygen barrier property can be further improved.

The half-cut portion has the same meaning as that of the conventional one. The half-cut portion 17 can be formed by a known half-cutting device disclosed in, for example, japanese patent application laid-open No. 2001-328095. In the present invention, it is generally preferable to cut the hard cover 10 from the print-receptive layer 14 side to the PS layer 15a to a depth of 10 to 90% of the total layer thickness of the PS layer 15a in order to achieve good openability.

The convex portion 13 may be provided on the bending line 12 provided with the half-cut portion 17, and may be provided in 1 or more number depending on the purpose of use of the distribution package 100. The shape of the convex portion 13 may be the following: the hard lid body 10 of the distribution package 100 is folded downward into a V shape by pinching both ends thereof with fingers around a folding line, thereby having a shape opened from the apex of the convex portion 13. For example, the shape of the ridge stripe may be as shown in fig. 1, or a triangular pyramid, a quadrangular pyramid, a hemispherical sphere, or the like may be used. The convex portion 13 can be formed by subjecting the half-cut portion to a die forming process and then to heat deformation.

The thickness of the rigid lid member 10 may be in the same range as that of a lid member generally used as a lid member of a distribution package, specifically 250 to 700 μm, and preferably 250 to 500 μm. Thus, the good opening property as the lid body of the distribution package 100 and the moldability of the hard composite sheet 200 are not impaired, and the hardness and touch of the sheet can be made appropriate, and the commercial value as the distribution package can be maintained.

Next, the print-receiving layer 14, the hard intermediate layer 15, and the cover sealing layer 16 that is the back surface of the hard cover 10 that constitute the hard cover 10 will be described in detail (fig. 2).

The print-receiving layer 14 constituting the hard cover 10 is a layer disposed on the outer side (the side opposite to the flexible container body 20) of the hard cover 10, and is a layer that receives printing ink by gravure printing, flexographic printing, or the like to form a print layer. Further, the hard intermediate layer 15 is a layer having a function of protecting the hard intermediate layer. The print-receiving layer 14 may be formed of a thermoplastic resin layer exhibiting good printing suitability and printing stability, and among these, a polyester resin layer having particularly excellent properties is preferable. Usually, the print-receiving layer 14 includes a single polyester resin layer, but 2 or more polyester resin layers of the same type or different types may be laminated by a dry lamination method, a coextrusion method, or the like.

The polyester resin layer may be the same as that used in the conventional distribution package, and for example, an amorphous copolyester resin containing 1, 4-cyclohexanedimethanol in an amount of 5 mol% or more, preferably 10 to 50 mol%, more preferably 15 to 45 mol% based on 100 mol% of the polyol component may be used. In this case, attention is paid to the tendency that: if the 1, 4-cyclohexanedimethanol content is too small, the degree of amorphization of the copolyester resin is difficult to improve, while if too large, the impact strength of the film is reduced.

In consideration of heat resistance, printing characteristics, and the like of the hard cover 10, the amount of the ethylene terephthalate unit is preferably 50 mol% or more, and more preferably 60 mol% or more, based on 100 mol% of the units constituting the polyester resin. On the other hand, the terephthalic acid component is preferably 50 mol% or more in 100 mol% of the polycarboxylic acid component, and the ethylene glycol component is preferably 50 to 95 mol%, more preferably 60 to 90 mol%, in 100 mol% of the polyol component.

As the polyhydric alcohols constituting the above polyhydric alcohol component, in addition to the above 1, 4-cyclohexanedimethanol and ethylene glycol, also usable are 1, 3-propanediol, triethylene glycol, 1, 4-butanediol, 1, 6-hexanediol, 3-methyl-1, 5-pentanediol, neopentyl glycol, 2-methyl-1, 5-pentanediol, 2-diethyl-1, 3-propanediol, 1, 9-nonanediol, alkylene glycols such as 1, 10-decanediol, trimethylolpropane, glycerol, pentaerythritol, diethylene glycol, diols (ダイマ - ジオ - ル), polyoxytetramethylene glycol (ポリオキシテトラメチレングリコ - ル), polyethylene glycol, and alkylene oxide adducts of bisphenol compounds or derivatives thereof.

As the polycarboxylic acid constituting the polycarboxylic acid component, in addition to the above-mentioned terephthalic acid and its ester, aromatic dicarboxylic acids, their ester-forming derivatives, aliphatic dicarboxylic acids, and the like can be used. Examples of the aromatic dicarboxylic acid include isophthalic acid, naphthalene-1, 4-dicarboxylic acid, naphthalene-2, 6-dicarboxylic acid, and sodium 5-sulfoisophthalate. Further, as ester derivatives of these aromatic dicarboxylic acids and terephthalic acids, derivatives of dialkyl esters, diaryl esters, and the like can be cited. Examples of the aliphatic dicarboxylic acid include glutaric acid, adipic acid, sebacic acid, azelaic acid, oxalic acid, succinic acid, and aliphatic dicarboxylic acids generally called dimer acids.

The thickness of the print-receptive layer 14 (usually, a polyester resin single layer) may be within the range of the thickness of the print-receptive layer generally used for the rigid lid 10 of the distribution package 100, and if the thickness of the print-receptive layer 14 is too thin, the surface strength of the rigid composite sheet 200 for forming the rigid lid 10 of the distribution package 100 may be reduced, and the print layer may peel off together with the print-receptive layer 14, while if the thickness of the print-receptive layer 14 is too thick, adjustment of the half-cut portion into the PS layer 15a tends to be difficult, and therefore, the thickness is preferably 10 μm to 50 μm, and more preferably 10 μm to 40 μm.

The hard intermediate layer 15 constituting the hard lid body 10 is a layer for imparting oxygen barrier properties and good openability to the hard lid body 10. The PS layer 15a and the EVOH layer 15b are provided from the content side. In addition, if necessary, other thermoplastic resins such as adhesive resins may be added to the EVOH layer 15b as appropriate within the range where the function thereof is not lost. As the adhesive resin, for example, an olefin copolymer having a carboxyl group, particularly an ethylene-acrylic acid copolymer, an ethylene-methacrylic acid copolymer, a maleic anhydride-modified polyethylene, and the like are preferable to be suitably adhered to the polyolefin resin layer. The amount of the adhesive resin added to the EVOH layer 15b is preferably 20 wt% or less as long as the gas barrier property is not lost.

The PS layer 15a is a layer for imparting strength and openness to the hard cover 10. As the PS constituting the PS layer 15a, PS used in a conventional dispensing package can be used, and specific examples thereof include general-purpose polystyrene (hereinafter referred to as "GPPS"), impact-resistant polystyrene (hereinafter referred to as "HIPS"), a monomer of a styrene-butadiene block copolymer (butadiene-based compound), and a blend thereof. Among them, GPPS has a characteristic of containing no rubber component and being extremely easily broken. On the other hand, HIPS has a property of being difficult to break because it is blended with a rubber component. Therefore, by appropriately controlling the blending ratio of GPPS and HIPS, the breaking property of the lid body at the time of opening the container can be adjusted. The mixing ratio of the GPPS to the HIPS is preferably 10: 90-80: 20, and more preferably 10: 90-70: 30 in terms of mass ratio.

The thickness of the PS layer 15a may be in the same range as the thickness of a PS layer generally used for a lid of a distribution package, and if it is too thin, it is difficult to obtain good opening property when used as a lid of a distribution package 100, and it is not necessary to increase the thickness more than necessary, and therefore, it is generally 150 to 500 μm, and preferably 200 to 400 μm. Since the preferred thickness of the hard composite sheet 200 for forming the hard cover 10 is 250 to 700 μm, the PS layer 15a is a main constituent layer in the hard composite sheet 200.

In addition, since the PS layer 15a regulates the fracture property generated in the hard cover 10, in the distribution package 100 having the folding line 12 provided with the half-cut portion 17, it is generally preferable that the depth of the half-cut portion 17 is cut to a depth of 10 to 90% from the side of the print receiving layer 14 of the PS layer 15a when the half-cut portion is formed from the front surface side toward the PS layer 15 a.

The EVOH layer 15b is a layer exhibiting an oxygen barrier property. The EVOH layer 15b is laminated on the PS layer 15a by a dry lamination method or a coextrusion method. As described above, since the half-cut portion is formed from the side of the print-receiving layer 14 to the PS layer 15a, the EVOH layer 15b itself is cut in the thickness direction by the half-cut portion 17. Therefore, the EVOH layer 15b does not participate in cracking that occurs when the dispensing package 100 is opened. Therefore, the thickness of the EVOH layer 15b may be thicker than conventional (5 to 15 μm thick) to improve the oxygen barrier property of the hard lid body 10, but too thick to obtain the oxygen barrier property corresponding thereto, and the thickness of the EVOH layer 15b disposed on the printing-receiving layer side is preferably more than 15 μm and 50 μm or less, more preferably more than 15 μm and 40 μm or less.

The EVOH constituting the EVOH layer 15b is preferably an EVOH having an ethylene content of 29 to 47 mol%, more preferably an EVOH having an ethylene content of 32 to 44 mol%, further preferably an EVOH having a saponification degree of 90 mol% or more, more preferably an EVOH having a saponification degree of 95 mol% or more.

The lid sealing layer 16, which is the back surface of the rigid lid 10, is a layer for fusion bonding with the flexible container body 20 described later, and may be formed of a polyolefin resin, preferably Polyethylene (PE), having the same structure as the sealing layer of the lid of the conventional dispensing package. In this case, the polyolefin resin layer may be composed of 2 or more layers of the same or different types. Specifically, when the cap sealing layer 16 is formed of a PE layer, a multilayer structure of a PE outer layer on the content side and a PE inner layer on the inner side thereof may be formed. As the PE layer of the two-layer structure, Low Density Polyethylene (LDPE), High Density Polyethylene (HDPE), or polyethylene obtained by blending LDPE and HDPE can be used.

As the lid body seal layer 16, when a blend of LDPE and HDPE is used, the blending ratio is preferably determined after taking into consideration the layer thickness and the respective required characteristics of the PE outer layer and the PE inner layer. That is, since the PE outer layer is located on the content side of the lid body sealing layer 16, it is necessary to ensure sealability with the flexible container body 20 and appropriate openability, and therefore, it is preferable to increase the blending ratio of LDPE. On the other hand, in the PE inner layer, it is necessary to conduct "cracking" of the layer (film) well with the breakage of the PS layer 15a of the hard intermediate layer 15, and therefore, it is preferable to increase the blending ratio of HDPE. The mixing ratio of LDPE and HDPE is 40: 60-80: 20, preferably 50: 50-80: 20, and more preferably 60: 40-80: 20. By forming such a structure, the blending ratio of LDPE and HDPE can be freely controlled, and the breaking property of the lid body at the time of opening the dispensing package 100 and the adhesive strength with the PS layer 15a can be adjusted. Further, by blending the two, LDPE can increase the melt tension to stabilize the film forming property, and HDPE can provide a lid excellent in the easy-to-break property at the time of opening.

Furthermore, LDPE having a density of 0.92 or more is preferably used as LDPE, and HDPE having a density of 0.95 or more is preferably used as HDPE. By increasing the density, better crack properties can be imparted to the PE layer.

If the thickness of the lid sealing layer 16 is too small, good sealing properties are difficult to achieve, and if it is too large, good cracking at the time of opening is difficult to achieve, and therefore, it is preferably 10 μm to 40 μm. In particular, when the lid body sealing layer 16 is composed of the PE outer layer and the PE inner layer, the thickness of each is preferably 5 μm to 20 μm. This makes it possible to maintain good sealing performance while maintaining good cracking at the time of opening.

The rigid composite sheet for forming the rigid lid 10 described above and the flexible container body 20 described later can be produced by a dry lamination method, a coextrusion method, or a combination thereof. When the layers before and after the adhesion by the coextrusion method are difficult to adhere the resin layers before and after the adhesion, an appropriate resin can be selected from various adhesive resins and adhered depending on the material to be adhered.

The hard cover 10 can be manufactured, for example, by the following method: the hard composite sheet 200 is half-cut by a conventional method, and is molded at a temperature of 170 to 220 ℃ by a male-female die to form a convex portion 13 on which stress is concentrated at the time of bending, and is cut into individual hard covers 10 as needed. Further, the sheet or a plurality of sheets may be directly joined and put into the manufacturing process of the distribution package 100, and finally cut.

As already described, the flexible composite film 300 for forming the flexible container body 20 constituting the dispensing package 100 of the present invention is formed of the surface protective layer 22, the oxygen barrier layer 23, and the container body sealing layer 24 to be disposed on the hard lid body 10 side, as shown in fig. 3.

The thickness of the flexible composite film 300 constituting the flexible container body 20 may be the same as that of a flexible composite film used for forming a flexible container body of a conventional distribution package, and the flexible composite film is deep-drawn by thermoforming to form a bag portion, and therefore, in view of film strength and moldability, the thickness is preferably 100 to 300 μm, and more preferably 150 to 250 μm.

The surface protective layer 22 constituting the flexible composite film 300 protects the contents from external stress, and may be formed of a thermoplastic resin having excellent stretchability and excellent film strength. As such a thermoplastic resin, a polyolefin resin such as a polypropylene resin can be used, and a polyamide resin having an oxygen barrier property superior to that of the polyolefin resin and also having an excellent film strength can be preferably used.

As the polyamide resin, aliphatic polyamides such as nylon 6, nylon 6-10, nylon 11, nylon 12, nylon 6-12 and nylon 4-6; aliphatic copolyamides such as nylon 6/6, nylon 6/6, 10, nylon 6/6, and nylon 12; polyhexamethylene terephthalamide; polyhexamethylene isophthalamide; aromatic polyamides such as xylene-based polyamides, and the like. Among them, nylon 6 and nylon 6-6 can be preferably used.

If the thickness of the surface protective layer 22 is too thin, the flexible container body 20 is likely to be broken, and if it is too thick, performance corresponding to the thickness cannot be obtained, and therefore, it is preferably 10 μm to 30 μm.

The oxygen barrier layer 23 constituting the flexible composite film 300 may be formed of a thermoplastic resin having oxygen barrier ability, a silicon oxide vapor-deposited film, an aluminum foil, or the like, but in the present invention, it is preferable to form an EVOH layer having low material cost and excellent content visibility and processability. As the EVOH forming the EVOH layer, EVOH similar to that described in the hard lid body 10 can be used.

In addition, as shown in fig. 4, when the oxygen barrier layer 23 is multilayered, it is preferable that both the oxygen barrier outer layer 23a on the surface protection layer 22 side and the oxygen barrier inner layer 23b on the container body sealing layer 24 side are EVOH layers (that is, EVOH outer layer and EVOH inner layer, respectively).

The EVOH may be appropriately selected from the same EVOH described for the hard lid body 10 and used

If the thickness of the oxygen barrier layer 23 is too thin, it is difficult to obtain a desired oxygen barrier property, and if it is too thick, moldability is deteriorated, so when a thermoplastic resin having an oxygen barrier ability is used, it is preferably 30 μm to 100 μm.

When the oxygen barrier layer 23 is made of a thermoplastic resin having oxygen barrier ability such as EVOH, it is preferable to contain an oxygen-absorbing resin in order to improve the oxygen barrier property. Therefore, an EVOH layer containing an oxygen absorbing resin can be cited as a preferable embodiment of the oxygen barrier layer 23.

As the oxygen absorbing resin, known oxygen absorbing resins can be used, and the following resins can be preferably used: thermoplastic resins having a C-C double bond, polyolefin resins, particularly polyolefin resins having a tertiary carbon atom in the main chain, oxidizable resins which are easily oxidized in the presence of an oxidation catalyst and exhibit oxygen-absorbing ability by reacting with oxygen in the air, such as reaction products of polyamide and polyamide-reactive oxidized polydiene or oxidized polyether, or mixtures thereof, and resins containing a hydrolysis-condensation product of a silane compound in which an organic group having at least one group selected from a halogen atom, an alkoxy group, a mercapto group, and a hydroxyl group is bonded to a silicon atom as a metal atom.

Further, as the oxygen absorbing resin, a resin to which various known additives, coloring agents, heat and weather resistant agents, antistatic agents, oxidation catalysts, and the like are added may be used within a range in which the effects of the present invention are not impaired. In particular, in order to improve the oxygen absorbing performance of the oxygen absorbing resin, it is preferable to add a transition metal salt as an oxidation catalyst in a range of 5000ppm or less by weight of metal atom. Examples of the transition metal salt which can be used for this purpose include inorganic, organic, or complex salts of transition metals such as cobalt, iron, nickel, copper, titanium, chromium, manganese, and ruthenium, organic salts such as carboxylate and sulfonate are particularly preferable, and specific examples thereof include acetate, stearate, propionate, hexanoate, octanoate, and neodecanoate.

The amount of the oxygen-absorbing resin to be incorporated into the oxygen barrier layer 23 is preferably 5 to 50% by weight, more preferably 5 to 30% by weight, in view of oxygen absorption, film formation properties of the flexible composite film, filling properties into the pouch portion thereafter, and the like.

In addition, other thermoplastic resins such as adhesive resins may be added to the oxygen barrier layer 23 as needed within the range that does not lose the function. As the adhesive resin, for example, an olefin copolymer having a carboxyl group, particularly an ethylene-acrylic acid copolymer, an ethylene-methacrylic acid copolymer, a maleic anhydride-modified polyethylene, and the like are preferable for adhesion to a polyolefin resin. The amount of the adhesive resin added to the oxygen barrier layer 23 is preferably 20 wt% or less as long as the gas barrier property is not lost.

Further, as already described, as shown in fig. 4, the oxygen barrier layer may be composed of an oxygen barrier outer layer 23a on the surface protective layer 22 side, an oxygen barrier inner layer 23b on the container body sealing layer 24 side, and an interlayer 23c sandwiched by them. This provides a better oxygen barrier property than the single-layer EVOH. In this case, the oxygen barrier layer 23 (fig. 4) having a multilayer structure is 50% or less (farthest from the outer surface) and preferably 45% or less of the total thickness of the flexible composite film 300 from the outer surface of the surface protective layer 22. In consideration of the interlayer peeling between the surface protective layer 22 and the oxygen barrier layer 23, the thickness of the oxygen barrier layer 23 relative to the flexible composite film 300 is preferably 5% or more (closest to the outer surface) from the outer surface of the surface protective layer 22.

In addition, when the oxygen barrier outer layer 23a and the oxygen barrier inner layer 23b of the oxygen barrier layer 23 (fig. 4) of the multilayer structure are formed of a thermoplastic resin (preferably EVOH) having an oxygen barrier ability, an oxygen absorbing resin may be contained in both the oxygen barrier outer layer 23a and the oxygen barrier inner layer 23b, but if an oxygen absorbing resin is contained in the oxygen barrier inner layer 23b, there is a concern that odor originating from the oxygen absorbing resin may migrate to contents to be filled, and therefore, it is preferable to incorporate 10 mass% or less of the oxygen absorbing resin in the oxygen barrier inner layer 23b, and it is particularly preferable to incorporate the oxygen absorbing resin only in the oxygen barrier outer layer 23 a.

In the embodiment of fig. 4, in the oxygen barrier layer 23, the thickness of the EVOH outer layer 23a is preferably larger than that of the EVOH inner layer 23 b. This effectively prevents oxygen from entering the contents from the outer surface of the surface protection layer 22.

As the interlayer 23c, a resin that can be used for the surface protective layer 22 of the flexible composite film 300 can be appropriately selected and used, and among thermoplastic resins having excellent stretchability and excellent film strength, a polyamide resin can be particularly preferably used.

The thickness of the interlayer 23c is preferably 1 to 20%, more preferably 5 to 15% of the thickness of the flexible composite film, because it is difficult to achieve a good oxygen barrier property even when the thickness is too thin or too thick.

The container body sealing layer 24 forms the inner wall of the bag portion 21 and is a layer welded to the back surface of the hard lid body 10, and may be configured as in the case of the sealing layer of the flexible container body of the conventional distribution package and the lid body sealing layer 16 of the hard lid body 10, and preferably includes at least 1 PE layer. As a preferred PE layer, LDPE can be used in order to ensure sealability.

The flexible composite film 300 used to form the flexible container body 20 described above may be manufactured by a dry lamination method, a coextrusion method, or a combination thereof. When the layers before and after the adhesion by the coextrusion method are difficult to adhere the resin layers before and after the adhesion, an appropriate resin can be selected from various adhesive resins and adhered depending on the material to be adhered.

In addition, the flexible container body 20 can be manufactured by the following method: the flexible composite film 300 is subjected to deep drawing processing according to a conventional method to form a bag portion, and is cut into individual flexible container bodies 20 as necessary. The deep drawing is generally performed by bringing the flexible composite film 300 into contact with a hot plate, heating the film, and then compressing air and vacuum-forming the film. The heating temperature is 100 to 170 ℃. Further, the film or a plurality of films may be directly joined and put into the manufacturing process of the distribution package 100, and finally cut.

The dispensing package 100 of the present invention can be manufactured by the following method: after the hard lid 10 and the flexible container 20 described above are prepared and the bag portion 21 of the flexible container 20 is filled with the contents, the peripheral edge portion of the container sealing layer 24 of the flexible container 20 is heat-sealed to the back surface of the hard lid 10, and the dispensing package 100 is cut into individual pieces as necessary.

The dispensing package 100 of the present invention may be a dispensing package product in which a liquid or paste is filled in a bag portion of the dispensing package 100, if it is seen from the viewpoint of contents, and this is also a part of the present invention. Specific examples of the products packaged in the distribution package include foods packaged in the distribution package, skin and hair cosmetics packaged in the distribution package, and medicines packaged in the distribution package, based on the fillers described below.

As the liquid or paste for filling, a liquid or paste food containing components whose quality is easily deteriorated by oxygen may be preferably used, and examples thereof include liquid or paste foods such as sauce (souce), tara sauce, dressing (dressing), jam, mayonnaise, ketchup, boiled mustard, and spread (たれ), liquid or paste cosmetics such as cream, lotion, face toilet, beauty lotion, shampoo, rinse, conditioner, hair dye, whitening cosmetic, cosmetic oil, and liquid or paste cosmetic, and liquid medicines such as ointment. In particular, liquid food is preferable because it is easily deteriorated by oxygen. In addition, the liquid or paste may contain a solid material, for example, a vegetable dish (or dish bar) such as vegetables in the case of liquid food, in a range where the dispensing package 100 is folded and the contents are discharged without being damaged.

The dispensing package and the product packaged in the dispensing package according to the present invention can be produced by folding the hard lid body downward with fingers about a folding line to form a V-shape, opening the convex portion to form a discharge port, and discharging the contents from the discharge port to the outside of the dispensing package.

Examples

The present invention will be specifically described below with reference to examples. Table 1 shows the layer structures of the hard composite sheet and the flexible composite film used in the following examples and comparative examples. The symbol "/" in the layer structure indicates that the layers described before and after the layer structure are joined by a dry lamination method, and "/" indicates that the layers described before and after the layer structure are joined by a coextrusion method.

Example 1

< hard composite sheet for hard cover >

PET (20 μm)/AD (10 μm)/EVOH (20 μm)/AD (10 μm)/HIPS [50 mass% ] + GPPS [50 mass% ] (300 μm)/AD (10 μm)/LDPE [50 mass% ] + HDPE [50 mass% ] (10 μm)/LDPE (10 μm)

< Flexible composite film for Flexible Container body >

Ny(20μm)/EVOH(50μm)/AD(20μm)/LDPE(20μm)

The hard composite sheet and the flexible composite film having the above layer structure were produced by a coextrusion method.

Next, the hard composite sheet was cut at a predetermined position from the PET layer side to the PS layer to a depth of 50% of the thickness thereof, and half-cut was performed on the hard composite sheet. Next, the half-cut hard composite sheet was heat-molded by a die molding method to form a convex strip, and the convex strip formed with a discharge port for discharging the content.

On the other hand, the flexible composite film is subjected to deep drawing molding to form a bag portion. The bag portion was filled with mayonnaise (キユ - ピ a) as a liquid food, and then, the filled product was combined with a hard composite sheet having a ridge tape and heat-sealed. Thereafter, the individual distribution packages were cut into individual distribution packages, and the distribution package packaged foods (mayonnaise) were produced.

Comparative example 1

A food (mayonnaise) in a distributed package was produced in the same manner as in example 1, except that the positions of "EVOH" and "HIPS + GPPS" in the hard composite sheet of example 1 were changed. The layer structure of the hard composite sheet used is as follows.

< hard composite sheet >

PET (20 μm)/AD (10 μm)/HIPS [50 mass% ] + GPPS [50 mass% ] (300 μm)/AD (10 μm)/EVOH (20 μm)/AD (10 μm)/LDPE [50 mass% ] + HDPE [50 mass% ] (10 μm)/LDPE (10 μm)

Example 2

A food (mayonnaise) in a distribution package was produced in the same manner as in example 1, except that the thickness of the EVOH in the hard composite sheet of example 1 was changed from 20 μm to 10 μm. The layer structure of the hard composite sheet used is as follows.

< hard composite sheet >

PET (20 μm)/AD (10 μm)/EVOH (10 μm)/AD (10 μm)/HIPS [50 mass% ] + GPPS [50 mass% ] (300 μm)/AD (10 μm)/LDPE [50 mass% ] + HDPE [50 mass% ] (10 μm)/LDPE (10 μm)

Comparative example 2

A food (mayonnaise) in a distribution package was produced in the same manner as in example 1, except that the thickness of EVOH in the hard composite sheet of comparative example 1 was changed from 20 μm to 10 μm. The layer structure of the hard composite sheet used is as follows.

< hard composite sheet >

PET (20 μm)/AD (10 μm)/HIPS [50 mass% ] + GPPS [50 mass% ] (300 μm)/AD (10 μm)/EVOH (10 μm)/AD (10 μm)/LDPE [50 mass% ] + HDPE [50 mass% ] (10 μm)/LDPE (10 μm)

Example 3

< hard composite sheet >

PET (20 μm)// EVOH (20 μm)// HIPS [ 80% by mass ] + GPPS [ 20% by mass ] (300 μm)/AD (10 μm)/LDPE (10 μm)

< Flexible composite film >

Ny (20 μm)/EVOH [ 92% by mass ] + oxygen-absorbing resin [ 8% by mass ] (50 μm)/AD (20 μm)/LDPE (20 μm)

The hard composite sheet having the above-described layer structure was produced by combining a coextrusion method and a dry lamination method. The flexible composite film is produced by coextrusion. The oxygen barrier layer of the flexible composite film is located in a range of 18 to 64% of the thickness of the flexible composite film from the outer surface of the surface protective layer.

A food (mayonnaise) in a distribution package was produced using the hard composite sheet and the flexible composite film in the same manner as in example 1.

Example 4

In the flexible composite film of example 3, the total amount of the oxygen-absorbing resin in the EVOH layer was kept substantially constant, and the thickness of LDPE was changed from 20 μm to 100 μm, and a flexible composite film having the following layer structure was further produced by a coextrusion method. A food (mayonnaise) in a distribution package was produced using the flexible composite film and the hard composite sheet of example 3 in the same manner as in example 1. The oxygen barrier layer (EVOH [ 92% by mass ] + the oxygen-absorbing resin [ 8% by mass ] (50 μm)) of the flexible composite film is in a range of 10 to 40% from the outer surface of the surface protective layer with respect to the thickness of the flexible composite film.

< Flexible composite film >

Ny (20 μm)/EVOH [ 85% by mass ] + oxygen-absorbing resin [ 15% by mass ] (25 μm)/Ny (10 μm)/EVOH (25 μm)/AD (20 μm)/LDPE (100 μm)

Comparative example 3

A food (mayonnaise) in a distributed package was produced in the same manner as in example 4, except that the positions of "EVOH" and "HIPS + GPPS" in the hard composite sheet of example 3 were changed. The layer structure of the hard composite sheet used is as follows.

< hard composite sheet >

PET (20 μm)// HIPS [ 80% by mass ] + GPPS [ 20% by mass ] (300 μm)// EVOH (20 μm)/AD (10 μm)/LDPE (10 μm)

Example 5

In the flexible composite film of example 4, the total amount of the oxygen absorbing resin in the outer EVOH layer (EVOH [85 mass% ] + oxygen absorbing resin [15 mass% ] (25 μm)/Ny (10 μm)/EVOH (25 μm)) of the oxygen barrier layer (EVOH [85 mass% ] + oxygen absorbing resin [15 mass% ] (25 μm)) was made substantially constant, and the thicknesses of the outer EVOH layer and the inner EVOH layer (EVOH (25 μm)) were varied to produce the following flexible composite film. A food (mayonnaise) in a distribution package was produced using the flexible composite film and the hard composite sheet of example 3 in the same manner as in example 1. The layer structure thereof is as follows. The oxygen barrier layer of the flexible composite film is located in a range of 10 to 40% from the outer surface of the surface protective layer with respect to the thickness of the film.

< Flexible composite film >

Ny (20 μm)/EVOH [ 90% by mass ] + oxygen-absorbing resin [ 10% by mass ] (40 μm)/Ny (10 μm)/EVOH (10 μm)/AD (20 μm)/LDPE (100 μm)

Example 6

A hair cosmetic (shampoo) in a dispensing package was prepared in the same manner as in example 1 by changing the contents from mayonnaise to shampoo using the hard composite sheet and the flexible composite film of example 5.

Test example 1: open mouth test

The opening properties of the distribution packages (i.e., the distribution packages containing food and the distribution packages containing hair cosmetic) obtained in examples 1 to 6 and comparative examples 1 to 3 were evaluated as follows. That is, 100 pieces of the dispensing packages of the examples and comparative examples were prepared, and each dispensing package was pinched with a finger and bent into a V-shape along a bending line, and the opening performance was visually evaluated. As a result, the dispensing packages obtained in examples 1 to 6 and comparative example 2 were able to be opened without any problem. The dispensing packages obtained in comparative examples 1 and 3 were not openable.

Test example 2: oxygen barrier test

< preparation of leuco methylene blue agar solution for evaluation of oxygen Barrier Property test >

First, 10mL of 0.01M methylene blue aqueous solution (solution A) and 0.01M SnCl were prepared₂50mL of 0.01MHCl aqueous solution (solution B) and 1L of 2 wt% agar aqueous solution (solution C). Then, 10mL of the solution A and 20mL of the solution B were added to a beaker to remove the blue color generated from the solution A. That is, after preparing a leuco methylene blue aqueous solution (solution D), 30mL of the solution B was added to the solution C which had been boiled in advance, and the mixture was further boiled, followed by adding the solution D thereto, immediately cooling to about 70 to 80 ℃ to prepare a leuco methylene blue agar solution. The dispensing package was filled with a sealed gelled leuco methylene blue agar solution, which changed from white to blue if immersed in oxygen.

< production of dispensing Package filled and sealed with leuco methylene blue agar solution >

A leuco methylene blue agar solution was used in place of the contents (mayonnaise) used in examples 1 to 5 and comparative examples 1 to 3. That is, the bag portion of the flexible composite film was filled with the leuco methylene blue agar solution before gelation as much as possible, and heat-sealed except for a portion overlapping with the hard composite sheet on which the projection as the discharge port was formed. Subsequently, the individual distribution packages were cut, air was removed from the unsealed portion, and heat sealing was performed completely. Then, the resulting solution was placed in a refrigerator to solidify the agar solution.

< evaluation method >

Each of the dispensing packages was stored at 35 ℃ in an un-humidified state (dry), and evaluated in terms of the state of color. The underlines in table 1 indicate the characteristic parts of the composite films. In table 2, "1" is white, "5" is blue, a larger value means more oxygen is taken in, and a "-" means that the subsequent storage is stopped.

[ Table 1]

	Hard composite sheet	Flexible composite film
			Example 1	PET(20μm)/AD(10μm)/EVOH(20μm)/AD(10μm)/H IPS [ 50% by mass]+ GPPS [ 50% by mass%](300μm)[ 50% by mass ] of/AD (10 μm)/L of DPE]+ HDPE [ 50% by mass](10μm)/LDPE(10μm)	Ny(20μm)/EVOH(50μm)/AD(20μm)/ LDPE(20μm)
Ratio 1	PET(20μm)/AD(10μm)/HIPS [ 50% by mass%]+ GPPS [50 quality ％](300μm)/AD(10μm)/EVOH(20μm)[ 50% by mass ] of/AD (10 μm)/L of DPE]+ HDPE [ 50% by mass](10μm)/LDPE(10μm)	Same as above
			Example 2	PET(20μm)/AD(10μm)/EVOH(10μm)/AD(10μm)/H IPS [ 50% by mass]+ GPPS [ 50% by mass%](300 μm)/AD (10 μm)/L DPE [ 50% by mass%]+ HDPE [ 50% by mass](10μm)/LDPE(10μm)	Same as above
Ratio 2	PET(20μm)/AD(10μm)/HIPS [ 50% by mass%]+ GPPS [50 quality ％](300μm)/AD(10μm)/EVOH(10μm)[ 50% by mass ] of/AD (10 μm)/L of DPE]+ HDPE [ 50% by mass](10μm)/LDPE(10μm)	Same as above
			Example 3	PET(20μm)//EVOH(20μm)//HIPS [ 80% by mass%]+GPPS[2 0 mass%](300μm)/AD(10μm)/LDPE(10μm)/LDPE(1 0μm)	Ny(20μm)/EVOH (92% by mass)]Oxygen absorbing Properties Resin [ 8% by mass%](50μm)/AD(20μm)/L DPE(20μm)
Example 4	Same as above	Ny(20μm)/EVOH (85% by mass)]Oxygen absorbing Properties Resin [ 15% by mass%](25μm)/Ny(10μm)/ EVOH(25μm)/AD(20μm)/LDPE(100 μm)
			Ratio 3	PET(20μm)//HIPS [ 80% by mass%]+ GPPS [ 20% by mass%](300μm) _//EVOH(20μm)/AD(10μm)/LDPE[(10μm)/LDPE(1 0μm)	Same as above
Example 5	Hard composite sheet of example 3	Ny(20μm)/EVOH (90% by mass)]Oxygen absorbing Properties Resin [ 10% by mass%](40μm)/Ny(10μm)/ EVOH(10μm)/AD(20μm)/LDPE(100 μm)

[ Table 2]

	Before storage	1 week	2 weeks	3 weeks	4 weeks	5 weeks	6 weeks	7 weeks	8 weeks
										Example 1	1	1	1	1	1	3	5	-	-
Ratio 1	1	1	5	-	-	-	-	-	-
										Example 2	1	1	1	1	5	-	-	-	-
Ratio 2	1	2	5	-	-	-	-	-	-
										Example 3	1	1	1	1	1	1	5	-	-
Example 4	1	1	1	1	1	1	1	4	5
										Ratio 3	1	1	2	5	-	-	-	-	-
Example 5	1	1	1	1	1	1	1	2	5

< conclusion >

As is apparent from table 2, in the comparison between example 1 and comparative example 1, between example 2 and comparative example 2, and between example 3 and comparative example 3, the oxygen barrier property was improved as compared with the distribution package of comparative example 1 by disposing the EVOH layer closer to the print-receiving layer side than the PS layer (in other words, disposing the PS layer closer to the content side than the EVOH layer), although the EVOH layer in the lid body was half-cut in the distribution package of each example.

It is also understood that the dispensing package of comparative example 2, in which the EVOH layer is located closer to the content side than the PS layer, does not reach the EVOH layer in the lid body by half-cutting, and therefore, the thickness of the EVOH layer must be 15 μm or less in order not to cause a problem in the opening property. On the other hand, in the dispensing package of the example, since the EVOH layer is disposed closer to the print-receiving layer side than the PS layer, the EVOH layer is completely cut in the half-cut treatment, and no problem occurs in the opening property, and the thickness of the EVOH layer may be made to exceed 15 μm in order to improve the oxygen barrier property (comparison of examples 1 and 3 with comparative example 2)

Further, the oxygen barrier properties of the following dispensing package are further improved: in the flexible composite film, the oxygen barrier layer of the film is 3-layer structure of an EVOH layer inner layer, an EVOH layer outer layer and an interlayer between the EVOH layer inner layer and the EVOH layer outer layer, the oxygen barrier layer is positioned in the range of 5-50% relative to the thickness of the film from the outer surface of the surface protection layer, and in the EVOH layer inner layer and the EVOH layer outer layer in the oxygen barrier layer of the film, at least the EVOH layer outer layer contains an oxygen absorbing resin (comparison of example 1 or 3 and example 4 or 5). In particular, the distribution package of example 5, in which the thickness of the EVOH outer layer in the oxygen barrier layer was larger than that of the EVOH inner layer, was excellent.

Industrial applicability

In the dispensing package of the present invention, the rigid cover constituting the dispensing package is formed of a rigid composite sheet in which a print-receiving layer, a rigid intermediate layer, and a cover sealing layer to be a rear surface of the rigid cover are laminated in this order, and the rigid intermediate layer includes a polystyrene resin layer and an ethylene-vinyl alcohol copolymer resin layer disposed closer to the print-receiving layer side than the polystyrene resin layer. Therefore, the oxygen barrier property of the hard cover is improved as compared with the case where the polystyrene resin layer is disposed closer to the print-receiving layer side than the ethylene-vinyl alcohol copolymer resin layer. Further, since the ethylene-vinyl alcohol copolymer resin layer itself is half-cut, the opening property is not lowered even if the thickness thereof is increased. And thus, in the case of packaging oxygen sensitive contents.

Claims (11)

1. A dispensing package comprising a rigid lid body and a flexible container body, wherein a peripheral edge portion of the flexible container body is welded to a back surface of the rigid lid body, the rigid lid body has a bending line having a half-cut portion formed on a surface side and a convex portion forming a discharge port when bent at a central portion of the surface, and the flexible container body has a bag portion for containing contents,

the hard cover is formed of a hard composite sheet having a thickness of 250 to 700 [ mu ] m, the hard composite sheet being formed by sequentially laminating a print-receiving layer, a hard intermediate layer, and a cover sealing layer that is the back surface of the hard cover,

the hard intermediate layer has an ethylene-vinyl alcohol copolymer resin layer having a thickness of more than 15 μm and not more than 50 μm and a polystyrene resin layer having a thickness of 150 to 500. mu.m,

at least the ethylene-vinyl alcohol copolymer resin layer is disposed closer to the print-receiving layer side than the polystyrene resin layer,

the half-cut portion is cut from the surface side of the polystyrene layer to a depth of 10 to 90% of the total thickness of the polystyrene layer.

2. The dispensing package according to claim 1, wherein the print receptive layer comprises a polyester resin layer and the cover seal layer comprises a polyethylene resin layer.

3. The dispensing package according to claim 1, wherein the thickness of the rigid cover is 250 to 500 μm, the thickness of the print-receiving layer is 10 to 50 μm, the thickness of the ethylene-vinyl alcohol copolymer resin layer of the rigid intermediate layer is more than 15 to 40 μm, the thickness of the polystyrene resin layer of the rigid intermediate layer is 200 to 400 μm, and the thickness of the cover sealing layer is 10 to 40 μm.

4. The dispensing package according to claim 1, wherein the flexible container body is formed of a flexible composite film in which a surface protective layer, an oxygen barrier layer having an ethylene-vinyl alcohol copolymer resin layer containing an oxygen absorbing resin, and a container body sealing layer disposed on the hard cover side are laminated in this order.

5. The dispensing package according to claim 4, wherein the flexible composite film constituting the flexible container body has a thickness of 100 to 300 μm, the surface protective layer has a thickness of 10 to 30 μm, and the oxygen barrier layer has a thickness of 30 to 100 μm.

6. The dispensing package according to claim 4, wherein the oxygen barrier layer has an outer layer of an ethylene-vinyl alcohol copolymer resin on the side of the surface protective layer, an inner layer of an ethylene-vinyl alcohol copolymer resin on the side of the container body sealing layer, and an interlayer sandwiched therebetween, and at least the outer layer of an ethylene-vinyl alcohol copolymer resin of the inner layer of an ethylene-vinyl alcohol copolymer resin and the outer layer of an ethylene-vinyl alcohol copolymer resin contains an oxygen absorbing resin.

7. The dispensing package according to claim 6, wherein the outer layer of ethylene-vinyl alcohol copolymer resin has a thickness greater than the thickness of the inner layer of ethylene-vinyl alcohol copolymer resin.

8. The dispensing package according to claim 6, wherein the oxygen barrier layer is located in a range of 5 to 50% of the total thickness of the flexible composite film from the surface of the surface protective layer.

9. The dispensing package according to claim 6, wherein the interlayer has a polyamide resin layer.

10. A product contained in a dispensing package, which is obtained by filling a liquid or paste into a bag portion of a flexible container body of the dispensing package according to claim 1.

11. The packaged product of dispensing packages according to claim 10, wherein the liquid or paste is a liquid food or a paste food.