JP5357693B2 - Dispensing packaged food - Google Patents

Description

The present invention relates to a food packaged in a packaged package, in which a gel-like food comprising at least one selected from agar, gelatin, gellan gum and carrageenan and hyaluronic acid and / or a salt thereof is prevented from decreasing with time.

Hyaluronic acid and / or a salt thereof is a mucopolysaccharide present in living bodies, particularly subcutaneous tissues, and is widely used as a raw material for cosmetics due to its high water retention function. In addition, the effect of supplementing the decrease in hyaluronic acid content inherent in the body by ingestion and improving the moisture retention, elasticity, and flexibility of the skin has been recognized. Foods containing acids and / or their salts are commercially available.

In recent years, gel-like foods containing hyaluronic acid and / or its salt have gained popularity, reminiscent of the effects of hyaluronic acid and / or its salt on the health and beauty of the gel-like appearance that is rich in water retention and elasticity. It has come to be used for various menus such as soft drinks, fruit desserts, vegetable salads, breads, boiled dishes, and sauces for hot pot dishes. In addition, food scenes have also diversified, and there has been a strong demand for packaging forms suitable for individualization and simplification.

Therefore, in order to realize a packaging form suitable for single eating and simplification, the present inventors can dispense the filled contents by a simple operation of bending the lid with one hand and crushing it as it is. An attempt was made to fill the package (Patent Documents 1 and 2) with a gel food containing hyaluronic acid and / or a salt thereof.

The distribution packaging body is for storing contents in a lid of a hard material having a folding line provided with a half-cut portion at the center of the surface and a projection that forms a discharge port when folded in use. The container of the flexible member is fused so that the pocket portion is formed. Patent Document 1 includes polyethylene, polyethylene terephthalate and polystyrene copolymer as specific examples of the hard material constituting the lid of the distribution package, and Patent Document 2 discloses a half-cut portion from the surface side of the lid. In order to prevent the oxygen barrier property of the ethylene-vinyl alcohol copolymer resin (hereinafter referred to as EVOH) layer having a thickness of 2 to 15 μm from being impaired when the fold line is formed by providing a bend line, polystyrene is formed on the surface side of the lid. There has been proposed a distribution package body in which an EVOH layer is arranged on a resin (hereinafter referred to as PS) layer and contents side, and a half cut is designed not to reach the EVOH layer.

However, the pocket portion of the distribution package made of the lid material of Patent Documents 1 and 2 is selected from agar, gelatin, gellan gum and carrageenan as a thickener suitable for shape retention in hyaluronic acid and / or a salt thereof. As a result of containing a gel food prepared by blending at least one kind and storing it for a long period of several months, there was a problem that the viscosity decreased with time and the quality was impaired.

Japanese Patent No. 3140016 JP 2006-35449 A

Therefore, an object of the present invention is to contain the contents in a lid of a hard material having a fold line provided with a half cut portion at the center of the surface and having a protrusion that forms a discharge port when folded. In a packaged food packed with a distribution package, the pocket of the flexible container of the distribution package has a structure in which the container of the flexible member is fused so as to form a pocket for the food. It is to prevent a decrease in viscosity over time of a gel food comprising at least one selected from agar, gelatin, gellan gum and carrageenan and hyaluronic acid and / or a salt thereof.

As a result of intensive studies to achieve the above object, the inventors of the present invention have a positional relationship between the PS layer and the EVOH layer in the distribution package of Patent Document 2 designed so that the half cut does not reach the EVOH layer. The EVOH layer is disposed on the surface side of the lid, the PS layer is disposed on the contents side, a half cut portion is formed in the EVOH layer, and the thickness of the EVOH layer is set to more than 15 μm and 50 μm or less. However, surprisingly, it is possible to prevent a decrease in viscosity over time of a gel-like food comprising at least one selected from agar, gelatin, gellan gum and carrageenan and hyaluronic acid and / or a salt thereof, thereby completing the present invention. It was.

That is, the present invention accommodates (1) a hard lid having a folding line having a half-cut portion formed from the surface side at the center of the surface and a protrusion that forms a discharge port when folded, and the contents. A flexible container body having a pocket portion for carrying out and a food product in the pocket portion of the flexible container body of the distribution packaging body in which the peripheral edge portion of the flexible container body is fused to the back surface of the hard lid body In the packaged packaged food filled with, the hard lid is made of a hard composite sheet obtained by laminating a print receiving layer, a hard oxygen barrier layer, and a lid seal layer to be the back of the hard lid in this order. The hard oxygen barrier layer has an EVOH layer having a thickness of more than 15 μm and not more than 50 μm and a PS layer having a thickness of not less than 150 μm and not more than 500 μm, and an EVOH layer Is PS A food packaged in a packaged package, wherein the food is a gel food comprising at least one selected from agar, gelatin, gellan gum and carrageenan and hyaluronic acid and / or a salt thereof, (2) The flexible container body is formed of a flexible composite film in which a surface protective layer, an oxygen barrier layer, and a container seal layer to be disposed on the hard lid side are laminated in this order, The oxygen barrier layer has an EVOH outer layer on the surface protective layer side, an EVOH inner layer on the container seal layer side, and an intervening layer sandwiched between them, and at least EVOH layer among the EVOH inner layer and the EVOH outer layer (1) The food packaged in a distribution package, wherein the outer layer contains an oxygen-absorbing resin.

Hyaluronic acid and / or its salt-containing gel foods can be filled in a distribution package that is suitable for individualization and simplification, and can be stored for several months. Further expansion of the acid food market can be expected. Moreover, since EVOH layer itself is cut | disconnected by a half cut, EVOH layer is extended at the time of opening, and thickness can be adjusted, without the openability of a distribution packaging body falling.

It is a perspective view of the distribution package used for the distribution package body foodstuff of this invention. It is sectional drawing of the hard composite sheet for forming the hard cover body of the distribution package body used for the distribution package body foodstuff of this invention, Comprising: A half cut part is provided. It is sectional drawing of the flexible composite film for forming the flexible container body of the distribution packaging body used for the distribution packaging body stuffed food of this invention. It is a perspective view of a distribution packing body stuffed food.

Hereinafter, the food packaged in the distribution package of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the distribution package body 100 used in the distribution package body food of the present invention includes a hard lid body 10 and a flexible container body 20, and the hard lid body 10. Has a folding line 12 having a half-cut portion formed from the surface side at the center of the surface 11 and a protrusion 13 that forms a discharge port when folded. The appearance shape of the distribution package used in the present invention may be the same as the appearance shape of a conventional distribution package.

Here, the “hard” of the hard lid body 10 is relatively harder than the flexible container body 20, the distribution packaging body 100 can be pinched with a finger and folded along a folding line, and the protrusion 13 is opened. It means the hardness that can be. Further, the “flexibility” of the flexible container body 20 indicates that it is relatively more flexible than the hard lid body 10 and is bent when the distribution packaging body 100 is pinched with a finger and folded along a folding line. It means that the hard lid 10 is deformed so that it can be discharged from the protrusion 13 that is crushed by the pressing of the hard lid 10 and opens the contents.

The “center portion” of the surface 11 of the hard lid 10 is, for example, a region including a line connecting the midpoints of the opposing long sides when the hard lid 10 is rectangular, and is a square. Is a region including a line connecting the midpoints of opposite sides or a region including one diagonal line, in the case of a rhombus, a region including a short diagonal line, and in the case of a circle, the center of the circle In the case of an ellipse, it is a region including a straight line that passes through the center of the major axis and is perpendicular to the major axis, but is not limited thereto.

As shown in FIG. 2, the hard lid 10 is formed of a hard composite sheet 200 in which a print receiving layer 14, a hard oxygen barrier layer 15, and a lid seal layer 16 to be the back surface of the hard lid 10 are laminated in this order. Is formed. The hard oxygen barrier layer 15 has a PS layer 15a and an EVOH layer 15b. The half cut part 17 is formed from the surface side of the hard lid 10, and extends beyond the EVOH layer 15b to the PS layer 15a. That is, the EVOH layer 15b is disposed closer to the print receiving layer 14 than the PS layer 15a. An arbitrary resin layer may be sandwiched between the PS layer 15a of the hard intermediate layer 15 and the lid sealing layer 16 as long as the effects of the present invention are not impaired.

Further, the flexible container body 20 has a pocket portion 21 for containing food, and a peripheral edge portion (not shown) of the flexible container body 20 is fused to the back surface of the hard lid body 10. . The flexible container body 20 forming the pocket portion 21 is provided, for example, one across the fold line 12, one on each side of the fold line 12, or a plurality of others, depending on the purpose of use of the distribution package 100. be able to. Further, the pocket portions 21 on both sides of the folding line 12 may be communicated.

As shown in FIG. 3, the flexible container body 20 includes a surface protection layer 22, an oxygen barrier layer 23, and a container body seal layer 24 that contacts the contents and is to be welded to the hard lid 10 in this order. The flexible composite film 300 is formed.

In addition, the meaning of a half cut is synonymous with the conventional meaning. The half cut portion 17 can be formed by a known half cut device as disclosed in, for example, Japanese Patent Application Laid-Open No. 2001-328095. In the present invention, the PS layer 15a is cut from the print receiving layer 14 side of the hard lid 10, in order to achieve good openability and to obtain an effect of preventing gel viscosity reduction. It is preferable to cut to a depth of 10 to 90% from the surface layer side of the total layer thickness.

The protrusion 13 is preferably provided on the folding line 12 provided with the half-cut portion 17, and one or a plurality of protrusions 13 may be provided depending on the purpose of use of the distribution package 100. The shape of the protrusion 13 is opened from the apex of the protrusion 13 by turning the hard lid 10 of the distribution package 100 downward and pinching both ends with fingers around the folding line and bending it into a V shape. Any shape can be used. For example, as shown in FIG. 1, it may be a ridge band shape, a triangular pyramid shape, a quadrangular pyramid shape, a semicircular sphere shape, or the like. The protrusion 13 can be usually formed by heat-deforming by a mold forming method after the half cut process.

The thickness of the hard lid 10 can be the same as the thickness range of the lid normally used as the lid of the distribution package, specifically 250 μm to 700 μm, preferably 250 μm to 500 μm. . In this way, the product as a distribution package is provided with an appropriate sheet stiffness and tactile sensation without impairing the good opening as the lid of the distribution package 100 and the moldability of the hard composite sheet 200. Can hold value.

Next, the print receiving layer 14, the hard oxygen barrier layer 15, and the lid seal layer 16 to be the back surface of the hard lid 10 constituting the hard lid 10 will be described in detail (FIG. 2).

The print receiving layer 14 constituting the hard lid 10 is a layer disposed on the outside of the hard lid 10 (on the side opposite to the flexible container body 20), and print ink is applied by a gravure printing method, a flexographic printing method, or the like. It is a layer that receives and forms a printed layer. In addition, this layer also has a function of protecting the hard oxygen barrier layer 15. Such a print receiving layer 14 can be comprised from the thermoplastic resin layer which shows favorable printability and printing stability, and it is preferable to have the polyester resin layer which is especially excellent about those characteristics especially. Usually, the print receiving layer 14 comprises a single polyester resin layer, but two or more polyester resin layers of the same kind or different kinds may be laminated by a dry lamination method, a coextrusion method or the like.

The polyester resin layer can be the same as that used in conventional distribution packages, for example, 5 mol of 1,4-cyclohexanedimethanol component in 100 mol% of polyhydric alcohol component. %, Preferably 10 to 50 mol%, more preferably 15 to 45 mol% of amorphous copolyester resin can be used. In this case, if the 1,4-cyclohexanedimethanol component is too small, it is difficult to increase the degree of amorphousness of the copolyester resin, while if it is too large, the impact strength of the film tends to decrease. is there.

In consideration of the heat resistance and printing characteristics of the hard lid 10, the ethylene terephthalate unit is preferably 50 mol% or more, more preferably 60 mol% or more in 100 mol% of the unit constituting the polyester resin. To do. On the other hand, the terephthalic acid component is preferably 50 mol% or more in 100 mol% of the polyvalent carboxylic acid component, and the ethylene glycol component in 100 mol% of the polyhydric alcohol component is preferably 50 to 95 mol%, more preferably 60 to 90 mol%.

Examples of the polyhydric alcohols constituting the polyhydric alcohol component include 1,3-propanediol, triethylene glycol, 1,4-butanediol, 1,4-cyclohexanedimethanol and ethylene glycol. , 6-hexanediol, 3-methyl-1,5-pentanediol, neopentyl glycol, 2-methyl-1,5-pentanediol, 2,2-diethyl-1,3-propanediol, 1,9-nonane Alkylene glycol such as diol, 1,10-decanediol, trimethylolpropane, glycerin, pentaerythritol, diethylene glycol, dimer diol, polyoxytetramethylene glycol, polyethylene glycol, alkylene oxide addition of bisphenol compound or its derivatives Etc. can also be used in combination.

As polyvalent carboxylic acids constituting the polyvalent carboxylic acid component, aromatic dicarboxylic acids, ester-forming derivatives thereof, aliphatic dicarboxylic acids and the like can be used in addition to the above-mentioned terephthalic acid and esters thereof. Examples of the aromatic dicarboxylic acid include isophthalic acid, naphthalene-1,4-dicarboxylic acid, naphthalene-2,6-dicarboxylic acid, and 5-sodium sulfoisophthalic acid. Moreover, derivatives of these aromatic dicarboxylic acids and terephthalic acids include derivatives such as dialkyl esters and diaryl esters. Examples of the aliphatic dicarboxylic acid include glutaric acid, adipic acid, sebacic acid, azelaic acid, oxalic acid, succinic acid and the like, and an aliphatic dicarboxylic acid usually called dimer acid.

The thickness of the print receiving layer 14 (usually a polyester resin single layer) may be in the range of the thickness of the print receiving layer normally used as the hard lid 10 of the distribution package 100. Is too thin, the surface strength of the hard composite sheet 200 for forming the hard lid 10 of the distribution package 100 is lowered, and there is a concern that the print layer may be peeled off together with the print receiving layer 14. When the thickness of the receiving layer 14 is too thick, it tends to be difficult to adjust the half cut to be put in the PS layer 15a, and is preferably 10 μm or more and 50 μm or less, more preferably 10 μm or more and 40 μm or less.

The hard oxygen barrier layer 15 constituting the hard lid 10 is a layer for giving the hard lid 10 an effect of preventing a decrease in viscosity and good openability, and the PS layer 15a and the EVOH layer 15b are formed from the contents side. Have. In addition, other thermoplastic resins such as an adhesive resin can be appropriately added to the EVOH layer 15b as necessary as long as the effects of the present invention are not impaired. As the adhesive resin, for example, an olefin copolymer having a carboxyl group is preferable, and in particular, an ethylene-acrylic acid copolymer, an ethylene-methacrylic acid copolymer, a maleic anhydride-modified polyethylene and the like are combined with the polyolefin resin layer. Suitable for bonding. The addition amount of the adhesive resin added to the EVOH layer 15b is preferably 20% by mass or less as a range that does not impair the viscosity reduction preventing effect of the gel of the present invention.

The PS layer 15 a is a layer that imparts strength and openness to the hard lid 10. As the PS constituting the PS layer 15a, PS used in a conventional distribution package can be used. Specifically, general-purpose polystyrene (hereinafter referred to as “GPPS”), impact-resistant polystyrene ( In the following, it is referred to as “HIPS”), a single product of styrene / butadiene block copolymer (butadiene-based compound), or a blend thereof. Here, GPPS does not contain a rubber component, and has a characteristic that it is extremely fragile. On the other hand, since HIPS is blended with a rubber component, it has a property that it is difficult to break. Therefore, by appropriately controlling the blend ratio of GPPS and HIPS, it is possible to adjust the cracking property generated in the lid when opening the package. The blending ratio of GPPS and HIPS is preferably 10:90 to 80:20, more preferably 10:90 to 70:30 in terms of mass ratio.

The thickness of the PS layer 15a can be the same as the thickness range of the PS layer normally used for the lid of the distribution package, and if it is too thin, a good opening is obtained when used as the lid of the distribution package 100. Therefore, it is usually 150 μm or more and 500 μm or less, and preferably 200 μm or more and 400 μm or less. In addition, since the preferable thickness of the hard composite sheet 200 for forming the hard lid 10 is 250 μm or more and 700 μm or less, the PS layer 15 a is a main constituent layer in the hard composite sheet 200.

In addition, since the PS layer 15a also adjusts the cracking property generated in the hard lid 10, in the distribution package 100 having the fold line 12 provided with the half-cut portion 17, the half-cut portion 17 is usually disposed on the surface layer. When forming the PS layer 15a from the side, it is preferable to make a cut until the depth of the half-cut portion 17 is 10 to 90% from the print receiving layer 14 side of the PS layer 15a.

The EVOH layer 15b is laminated on the PS layer 15a by a dry lamination method, a coextrusion method, or the like. As described above, since the half cut reaching the PS layer 15a from the print receiving layer 14 side is formed, 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 the cracks that occur when the distribution package 100 is opened, and even if the thickness of the EVOH layer 15b is larger than the conventional (2 to 15 μm thickness), the opening property of the distribution package is reduced. Never do. Therefore, the thickness of the EVOH layer 15b of the hard lid 10 can be increased to improve the effect of preventing gel viscosity reduction. However, if the thickness is too thick, the effect of the present invention can not be obtained. Specifically, the layer thickness is more than 15 μm and 50 μm or less, preferably more than 15 μm and 40 μm or less.

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

The lid sealing layer 16 to be the back surface of the hard lid 10 is for welding with the flexible container 20 described later, and has the same configuration as the sealing layer of the lid of the conventional distribution package. It is preferably formed from a polyolefin resin, preferably polyethylene (hereinafter referred to as PE). In this case, the polyolefin resin layer may be composed of two or more layers of the same type or different types. Specifically, when the lid seal layer 16 is formed from a PE layer, a multilayer structure of a PE outer layer on the contents side and a PE inner layer on the inner side may be used. As the PE layer having such a two-layer structure, low density polyethylene (LDPE), high density polyethylene (HDPE), or a blend of LDPE and HDPE can be used.

When using a blend of LDPE and HDPE as the lid seal layer 16, the blend ratio should be determined in consideration of the layer thickness and the properties required for each of the PE outer layer and PE inner layer. Is preferred. That is, since the PE outer layer is located on the content side of the lid seal layer 16, it is necessary to ensure the sealing property with the flexible container body 20 and an appropriate opening property. Higher is preferred. On the other hand, the PE inner layer needs to propagate “cut” of the layer (film) well with the crack of the PS layer 15a of the hard oxygen barrier layer 15, and therefore, the HDPE blending ratio is increased. It is preferable. In general, the mixing ratio of LDPE and HDPE is 40:60 to 80:20, preferably 50:50 to 80:20, and more preferably 60:40 to 80:20 by mass ratio. By adopting such a configuration, the blending ratio of LDPE and HDPE can be freely controlled to adjust the cracking property generated in the lid when opening the distribution package 100 and the adhesive strength with the PS layer 15a. be able to. Also, by blending the two, it is possible to increase the melt tension by LDPE, to stabilize the film forming property, and to obtain a lid body that is easy to open at the time of opening by HDPE.

LDPE having a density of 0.92 or more is preferable, and HDPE having a density of 0.95 or more is preferably used. By increasing the density, it is possible to impart good tearability to the PE layer.

If the thickness of the lid seal layer 16 is too thin, it will be difficult to achieve good sealing properties, and if it is too thick, it will be difficult to achieve good cutting at the time of opening, so it is preferably 10 μm or more and 40 μm or less. is there. In particular, when the lid seal layer 16 is composed of a PE outer layer and a PE inner layer, each thickness is preferably 5 μm or more and 20 μm or less. Thereby, while maintaining the cutting | disconnection at the time of opening favorable, favorable sealing property is also hold | maintained and the viscosity fall prevention effect of a gel can be improved.

The hard composite sheet for forming the hard lid 10 described above and the flexible container body 20 described later can be manufactured by a dry laminating method, a coextrusion method, or a method combining these. Moreover, when adhering the front and back layers by the co-extrusion method, if the front and back resin layers are difficult to adhere, an appropriate one can be selected from various adhesive resins according to the material to be bonded.

Moreover, the hard cover 10 performs, for example, a half cut treatment on the hard composite sheet 200 according to a conventional method, and the protruding portion 13 where stress is concentrated when bent by male-female mold molding at a temperature of 170 to 220 ° C. It can be manufactured by forming and cutting into individual hard lids 10 as necessary. In addition, it may be put into the manufacturing process of the distribution package 100 in the form of a sheet or a plurality of pieces connected, and may be cut at the end.

As already described, the flexible composite film 300 for forming the flexible container body 20 constituting the distribution package 100 used in the present invention has a surface protective layer 22, an oxygen barrier layer as shown in FIG. 23 and the container seal layer 24 to be disposed on the hard lid 10 side.

The thickness of the flexible composite film 300 constituting the flexible container body 20 can be the same as the thickness of the flexible composite film for forming the flexible container body of the conventional distribution package, Usually, since the composite film is deep-drawn by thermoforming to form the pocket portion, the film strength and formability are taken into consideration, and the thickness is preferably 100 μm or more and 300 μm or less, more preferably 150 μm or more and 250 μm.

The surface protective layer 22 constituting the flexible composite film 300 protects the contents from external stress, and can be formed from a thermoplastic resin having excellent stretchability and excellent film strength. As such a thermoplastic resin, a polyolefin resin such as a polypropylene resin can also be used, but a polyamide resin having an excellent effect of preventing a decrease in viscosity and excellent in film strength as compared with the polyolefin resin can be preferably used.

Examples of polyamide resins include aliphatic polyamides such as nylon 6, nylon 6-6, nylon 6-10, nylon 11, nylon 12, nylon 6-12, nylon 4-6; nylon 6/6, nylon 6/6, 10 An aliphatic polyamide such as nylon 6/6, 12; polyhexamethylenediamine terephthalamide; polyhexamethylenediamine isophthalamide; aromatic polyamide such as xylene group-containing polyamide can be used. Of these, nylon 6 and nylon 6-6 can be preferably used.

When the thickness of the surface protective layer 22 is too thin, the flexible container 20 is easily broken, and when it is too thick, the performance corresponding to the thickness is not obtained, and is preferably 10 μm or more and 30 μm or less.

The oxygen barrier layer 23 constituting the flexible composite film 300 can be composed of a thermoplastic resin having an oxygen barrier ability, a silicon oxide vapor deposition film, an aluminum foil, or the like. However, in the present invention, the material cost is low, and It is preferable that the EVOH layer is excellent in visibility and molding processability. As EVOH which forms an EVOH layer, the thing similar to what was demonstrated with the hard cover body 10 can be used.

Further, as shown in FIG. 3, the oxygen barrier layer 23 includes an oxygen barrier outer layer 23a on the surface protective layer 22 side and an oxygen barrier inner layer 23b on the container seal layer 24 side with the intervening layer 23c interposed therebetween. It is excellent in the effect of preventing gel viscosity reduction, and it is more preferable that both the oxygen barrier outer layer 23a and the oxygen barrier inner layer 23b are EVOH layers (that is, EVOH outer layer and EVOH inner layer, respectively). In this case, the oxygen barrier layer 23 having a multilayer structure is 50% or less from the outer surface of the surface protective layer 22 with respect to the total thickness of the flexible composite film 300 (the farthest away from the outer surface), preferably 45%. The following is preferable. In consideration of delamination between the surface protective layer 22 and the oxygen barrier layer 23, the oxygen barrier layer 23 is 5% or more from the outer surface of the surface protective layer 22 with respect to the thickness of the flexible composite film 300 (from the outer surface). It is preferable that the closest location.

When the oxygen barrier outer layer 23a and the oxygen barrier inner layer 23b of the oxygen barrier layer 23 having a multilayer structure are formed of a thermoplastic resin having an oxygen barrier capability (preferably EVOH), the oxygen barrier outer layer 23a and the oxygen barrier outer layer 23a Both of the oxygen barrier inner layers 23b can contain an oxygen absorbing resin, but if the oxygen barrier inner layer 23b contains an oxygen absorbing resin, a strange odor derived from the oxygen absorbing resin is transferred to the filled contents. Therefore, it is preferable to blend 10% by mass or less of the oxygen-absorbing resin in the oxygen barrier inner layer 23b, and in particular, EVOH is blended only in the oxygen barrier outer layer 23a. preferable.

The EVOH can be used by appropriately selecting from the same ones described for the hard lid 10.

If the thickness of the oxygen barrier layer 23 is too thin, it will be difficult to obtain the effect of preventing the decrease in viscosity, and if it is too thick, the moldability will deteriorate. Therefore, when a thermoplastic resin having an oxygen barrier ability is used, it is preferably 30 μm. It is 100 μm or less. Further, it is preferable that the thickness of the EVOH outer layer 23a is larger than the thickness of the EVOH inner layer 23b, which further suppresses the decrease in gel viscosity.

As the oxygen-absorbing resin, a known oxygen-absorbing resin can be used, and a thermoplastic resin having a carbon-carbon double bond, a polyolefin resin, particularly a polyolefin resin having a tertiary carbon atom in the main chain, polyamide Oxidizing ability to react with oxygen in the air and develop oxygen absorption ability in the presence of an oxidation catalyst such as a reaction product of polyamide and polyamide-reactive oxidizable polydiene or oxidizable polyether or a mixture thereof Resin, preferably a resin containing a hydrolytic condensate 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 which is a metal atom Can do.

As the oxygen-absorbing resin, a resin to which various known additives, colorants, heat and weathering agents, antistatic agents, oxidation catalysts and the like are added may be used as long as the effects of the present invention are not impaired. . In particular, in order to improve the oxygen absorption performance of the oxygen-absorbing resin, it is preferable to add a transition metal salt as an oxidation catalyst in a range of 5000 ppm or less by metal atomic weight. Examples of the transition metal salt that can be used for this purpose include cobalt, iron, nickel, and also inorganic salts, organic salts, or complex salts of transition metals such as copper, titanium, chromium, manganese, ruthenium, and particularly carboxylates, Organic salts such as sulfonates are preferred, and specific examples include acetate, stearate, propionate, hexanoate, octanoate, neodecanoate and the like.

The blending amount of the oxygen-absorbing resin in the oxygen barrier layer 23 is preferably 5 to 50% by mass in consideration of oxygen absorbability, film-forming property of the flexible composite film, filling properties into the subsequent pocket portion, and the like. More preferably, it is 5-30 mass%.

Further, other thermoplastic resins such as an adhesive resin can be appropriately added as necessary to the oxygen barrier layer 23 as long as the effects of the present invention are not impaired. The amount of the adhesive resin added to the oxygen barrier layer 23 Is preferably 20% by mass or less. As the adhesive resin, for example, an olefin copolymer having a carboxyl group is preferable, and in particular, an ethylene-acrylic acid copolymer, an ethylene-methacrylic acid copolymer, a maleic anhydride-modified polyethylene and the like are combined with the polyolefin resin layer. Suitable for bonding.

The intervening layer 23c can be appropriately selected from those that can be used for the surface protective layer 22 constituting the flexible composite film 300. Among the thermoplastic resins having excellent stretchability and excellent film strength. Polyamide resins can be particularly preferably used.

If the thickness of the intervening layer 23c is too thin or too thick, a good viscosity reduction preventing effect cannot be obtained. Therefore, the thickness is preferably 1 to 20%, more preferably 5 to 5% with respect to the thickness of the flexible composite film. The thickness is 15%.

The container body seal layer 24 is a layer which is an inner wall of the pocket portion 21 and is welded to the back surface of the hard lid body 10. The seal layer of the flexible container body of the conventional distribution package body and the hard lid material 10 The structure can be the same as that of the lid sealing layer 16, and preferably comprises at least one PE layer. As a preferable PE layer, LDPE can be used to ensure sealing performance.

The flexible composite film 300 for forming the flexible container body 20 described above can be manufactured by a dry laminating method, a coextrusion method, or a method combining these. Moreover, when adhering the front and back layers by the co-extrusion method, if the front and back resin layers are difficult to adhere, an appropriate one can be selected from various adhesive resins according to the material to be bonded.

The flexible container body 20 is manufactured by forming a pocket portion of the flexible composite film 300 by deep drawing according to a conventional method, and cutting into individual flexible container bodies 20 as necessary. Can do. As the deep drawing process, for example, after the flexible composite film 300 is heated by contacting with a hot plate, it is generally performed by a method of compressed air or vacuum forming. As heating temperature, it is 100-170 degreeC. In addition, it may be put into the manufacturing process of the distribution package 100 in the form of a film or a plurality of pieces connected, and may be cut at the end.

The distribution package 100 used in the present invention is prepared by preparing the hard lid 10 and the flexible container 20 described above, filling the pocket portion 21 of the flexible container 20 with the contents, and then adding flexibility. The peripheral part of the container body sealing layer 24 of the container body 20 can be manufactured by heat-sealing the back surface of the hard lid body 10 and cutting into individual distribution packaging bodies 100 as necessary.

In the packaged food package of the present invention, a gel food product comprising at least one selected from agar, gelatin, gellan gum and carrageenan and hyaluronic acid and / or a salt thereof is contained in the pocket portion of the packaged package 100. Become.

The agar used in the packaged packaged food of the present invention is not particularly limited as long as it is usually used as a food material, and is generally a polysaccharide containing agarose and agaropectin obtained by extraction from red algae. Any of them may be used.

The gelatin used in the food packaged in the distribution package of the present invention is not particularly limited as long as it is usually used as a food material. For example, various types of gelatin such as alkali-treated gelatin and acid-treated gelatin can be used depending on the production method and the origin of raw materials. There are some, but you can use either one.

The gellan gum used for the food packaged in the distribution package of the present invention is not particularly limited as long as it is normally used as a food material. For example, C-6 is obtained by binding one residue of glyceryl group to the C-2 position of glucose. There are native gellan gum having an average of ½ residues of acetyl groups at the position, and deacylated gellan gum purified by deacetylation of this. Any of these may be used.

The carrageenan used for the food packaged in the distribution package of the present invention is not particularly limited as long as it is usually used as a food material, and is generally a kind of galactan having a sulfate group obtained by extraction from red algae, and κ , Λ, and ι, any of which may be used.

If the total amount of agar, gelatin, gellan gum and carrageenan used in the packaged food of the present invention is too small, the shape retention of the gel required for each food application cannot be obtained from the preparation, and if too large, Since the viscosity reduction of a gel is seen, 0.5 to 3% is preferable with respect to a gel-like food, and 1 to 3% is more preferable.

Hyaluronic acid refers to a polysaccharide having one or more repeating structural units composed of disaccharides of glucuronic acid and N-acetylglucosamine. The raw material hyaluronic acid and / or salt thereof used in the present invention is not particularly limited. For example, living tissues such as chicken crown, umbilical cord, eyeball, skin, cartilage, or hyaluronic acid-producing microorganisms such as Streptococcus are cultured. The culture broth obtained in this way is used as a raw material, and is obtained by extraction (further purified as necessary).

Hyaluronic acid and / or a salt thereof used in the food packaged in the distribution package of the present invention is not particularly limited, and either the crude extract or the purified product may be used, but the purified product, specifically, The purity of hyaluronic acid and / or a salt thereof is preferably 90% or more. When the purity is less than 90%, hyaluronic acid and / or a salt thereof is colored over time during storage, which may cause a decrease in viscosity of the gel food.

If the amount of hyaluronic acid and / or salt thereof used in the packaged food of the present invention is too small, the expected effects on health and beauty cannot be obtained, and if it is too large, the viscosity of the gel decreases with time. Therefore, 0.001 to 0.5% is preferable with respect to the gel food, and 0.005 to 1% is more preferable.

The distributed packaged food of the present invention is a range that does not impair the effects of the present invention, except for at least one selected from agar, gelatin, gellan gum and carrageenan as essential ingredients, and hyaluronic acid and / or a salt thereof. It can select suitably and can mix | blend. Specifically, for example, xanthan gum, tamarind seed gum, guar gum, gum arabic, silium seed gum, potato starch, corn starch, glutinous rice starch, wheat starch, tapioca starch, sweet potato starch, waxy corn starch, glutinous rice starch, etc. , Moist heat-treated starch, modified starch, koji, pectin, pullulan, mannan, galactomannan, chitin, chitosan, dextrin and other gelling agents, glucose, sucrose, lactose, maltose, oligosaccharides, glucose fructose liquid sugar, syrup, honey Sugars such as sucralose, stevia, aspartame, acesulfame potassium, xylitol, trehalose, palatinose, etc., sorbitol, maltitol, lactitol, erythritol, oligosaccharide alcohol, branched oligosaccharide alcohol, dextrin alcohol Sugar alcohols such as cole, dietary fibers such as indigestible dextrin, crystalline cellulose, apple fiber, beauty raw materials such as ceramide, isoflavone, coenzyme Q10, collagen, monoglycerin fatty acid ester, polyglycerin fatty acid ester, sucrose fatty acid ester, Emulsifiers such as lecithin, lysolecithin, octenyl succinylated starch, salt, soy sauce, miso, mayonnaise, ketchup, sauce, extracts from animals and plants, amino acids, seasonings such as sodium glutamate, various peptides, citric acid, tartaric acid, succinic acid, apple Organic acid salts such as acid, acetic acid and lactic acid, vitamins A, vitamin B group, vitamins C, vitamin D, vitamins such as niacin, minerals such as calcium, sodium, potassium and magnesium or salts thereof, ascorbic acid, bi Antioxidants such as amine E, spices, grapefruit flavor, orange flavor, apple flavor, fragrance such as lemon flavor, dye and the like.

The food packaged in the distribution package of the present invention has a hard lid facing down and pinches both ends with fingers around the folding line and bends it into a V shape, thereby opening the protrusion and forming a discharge port. The gel food can be discharged from the outlet to the outside of the distribution package.

Hereinafter, the present invention will be specifically described by way of 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 notation “//” in the layer structure indicates that the layers described before and after that are bonded by a dry laminate method, and “/” indicates that the layers described before and after that are bonded by a coextrusion method. Means that

[Example 1] <Rigid composite sheet for rigid lid> 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> Ny (20 μm) / EVOH (50 μm) / AD (20 μm) / LDPE (20 μm)

A hard composite sheet and a flexible composite film having the above-described layer structure were prepared by a coextrusion method.

Next, at a predetermined position of the hard composite sheet, the PS layer was cut to a depth of 50% of the thickness from the PET layer side, and the hard composite sheet was half-cut. Next, the hard union sheet subjected to the half cut was heat-molded by a mold forming method to form a ridge band that forms a discharge port for discharging the contents.

On the other hand, the flexible composite film was deep-drawn to form a pocket portion. In this pocket, put agar 1%, hyaluronic acid and / or its salt 0.01%, citric acid (crystal) 0.1%, granulated sugar 5%, palatinose 5%, fresh water 88.89% into a mixer. After heating, mixing and stirring at a product temperature of 80 ° C., the gel-like food prepared by cooling to a gel was filled, and then heat-sealing together with a hard composite sheet on which a strip was formed. Then, it cut | divided into each distribution package, and manufactured the distribution package body foodstuff of this invention.

[Comparative Example 1] In the hard composite sheet of Example 1, a food packaged in a distribution package was produced in the same manner as in Example 1 except that the positional relationship between "EVOH" and "HIPS + GPPS" was changed. The layer structure of the used hard composite sheet 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)

[Comparative Example 2] In the hard composite sheet of Example 1, a food packaged in a packaged package was produced in the same manner as in Example 1 except that the thickness of EVOH was changed from 20 µm to 10 µm. The layer structure of the used hard composite sheet 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 3] A distribution packaged food was manufactured in the same manner as in Example 1 except that the thickness of EVOH in the hard composite sheet of Comparative Example 2 was changed from 20 µm to 10 µm. The layer structure of the used hard composite sheet 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 2] <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) / LDPE ( 10μm)

<Flexible composite film> Ny (20 μm) / EVOH [92 mass%] + oxygen absorbing resin [8 mass%] (50 μm) / AD (20 μm) / LDPE (20 μm)

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

Using the hard composite sheet and the flexible composite film, a food packaged with the distribution package of the present invention was produced in the same manner as in Example 1.

[Comparative Example 4] In the hard composite sheet of Example 2, a food product packed with a distribution package was produced in the same manner as in Example 2 except that the positional relationship between "EVOH" and "HIPS + GPPS" was changed. The layer structure of the used hard composite sheet 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) / LDPE (10 μm)

[Example 3] In the flexible composite film of Example 2, the total amount of the oxygen-absorbing resin in the EVOH layer was made substantially constant, and a flexible composite film having the following layer structure was prepared by coextrusion. Using this flexible composite film and the hard composite sheet of Example 2, a food packaged with the distribution package of the present invention was produced in the same manner as in Example 1. The layer structure is as follows. In addition, the oxygen barrier layer of the flexible composite film was located in the 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 [85 mass%] + oxygen absorbing resin [15 mass%] (25 μm) / NY (10 μm) / EVOH (25 μm) / AD (20 μm) / LDPE (100 μm) )

[Example 4] A food packaged with the distribution package according to the present invention was produced in the same manner as in Example 3 except that gelatin in the gel food was replaced with gelatin.

[Example 5] A food packaged with the distribution package of the present invention was produced in the same manner as in Example 3 except that gellan gum was replaced with gellan gum.

[Example 6] A distributed packaged food of the present invention was produced in the same manner as in Example 3 except that the agar in the gel food was replaced with carrageenan.

[Test Examples] The foods packed in the distribution package obtained in Examples 1 to 5 and Comparative Examples 1 to 4 were stored in a 25 ° C. heat-reserving cabinet for 3 months, and the decrease in viscosity over time was examined. Viscosity reduction is confirmed by visual inspection, and compared with the control product prepared at the time of visual inspection, A is a case where no viscosity reduction is observed, and B is a slight viscosity reduction but no problem in terms of quality. The case where the viscosity decreased and the quality was impaired was defined as C.

From the results of Table 2, the EVOH layer is disposed on the print receiving layer side from the PS layer (in other words, the PS layer is disposed on the contents side from the EVOH layer), and the thickness of the EVOH layer is further determined. By making it more than 15 μm and 50 μm or less, the EVOH layer in the hard lid is half-cut, but at least one selected from agar, gelatin, gellan gum and carrageenan, hyaluronic acid and / or a salt thereof The time-dependent viscosity fall of the gel-like foodstuff which consists of was suppressed (Examples 1-2, Comparative Examples 1-4).

Further, in the flexible composite film, the oxygen barrier layer of the film has a three-layer structure including an EVOH layer inner layer, an EVOH outer layer, and an intervening layer sandwiched between them, and among the EVOH layer inner layer and the EVOH outer layer, In addition, by including an oxygen-absorbing resin in at least the EVOH outer layer, a decrease in viscosity over time of a gel food comprising at least one selected from agar, gelatin, gellan gum and carrageenan and hyaluronic acid and / or a salt thereof Was remarkably suppressed and was very preferable (Examples 3 to 6).

In addition, since the EVOH layer is the content side of the PS layer, the food packed in the distribution package of Comparative Example 3 does not have a half cut on the EVOH layer in the lid. It was necessary to make the thickness of 15 μm or less. On the other hand, since the EVOH layer is arranged closer to the print receiving layer side than the PS layer in the distribution packaged food of the example, the EVOH layer is completely cut by the half-cut treatment, and there is a problem in the opening property. In addition, in order to improve the effect of the present invention, the thickness of the EVOH layer can be made more than 15 μm.

DESCRIPTION OF SYMBOLS 10 Hard lid body 11 Hard lid body surface 12 Bending line 13 Projection 14 Print receiving layer 15 Hard oxygen barrier layer 15a Polystyrene resin layer (PS layer) 15b Ethylene-vinyl alcohol copolymer resin layer (EVOH layer) 16 Lid body Seal layer 17 Half cut portion 20 Flexible container body 21 Pocket portion 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 Intervening layer 24 Container body seal Layer 25 Contents (gel food) 100 Distribution package 200 Hard composite sheet 300 Flexible composite film

Claims (2)

A hard lid having a fold line having a half-cut portion formed from the surface side at the center of the surface and a protrusion forming a discharge port when folded;
And a flexible container body having a pocket portion for containing the contents,
In a packaged food packed with a distribution package, in which a food is filled in a pocket of the flexible container body of the distribution package formed by fusing the peripheral edge of the flexible container to the back surface of the hard lid,
The hard lid is formed of a hard composite sheet obtained by laminating a print receiving layer, a hard oxygen barrier layer, and a lid seal layer to be the back of the hard lid in this order, and has a thickness of 250 μm or more and 700 μm or less. Have
The hard oxygen barrier 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 not less than 150 μm and not more than 500 μm,
The ethylene-vinyl alcohol copolymer resin layer is disposed closer to the print receiving layer than the polystyrene resin layer ;
The half-cut portion is a cut inserted from the surface side of the total thickness of the polystyrene layer to a depth of 10 to 90%,
The food is at least one selected from agar, gelatin, gellan gum and carrageenan;
A packaged packaged food characterized by being a gel food comprising hyaluronic acid and / or a salt thereof. The flexible container body is formed of a flexible composite film in which a surface protective layer, an oxygen barrier layer, and a container body seal layer to be disposed on the hard lid side are laminated in this order, and the oxygen barrier layer Has an ethylene-vinyl alcohol copolymer resin outer layer on the surface protective layer side, an ethylene-vinyl alcohol copolymer resin inner layer on the container seal layer side, and an intervening layer sandwiched between them. The distribution packaging body packing according to claim 1, wherein at least the ethylene-vinyl alcohol copolymer resin outer layer contains an oxygen-absorbing resin among the vinyl alcohol copolymer resin inner layer and the ethylene-vinyl alcohol copolymer resin outer layer. Food.

Images