JP2012162296A - Cup paper container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cup paper container in which food, a beverage, or the like is sealed, not reducing its commercial value nor impairing the appearance of a product even if a recess is formed in a body part of the cup paper container due to a change in environmental temperature.SOLUTION: The cup paper container sealed with a lid material includes a body material and a bottom material each comprising a laminated sheet formed by laminating a heat-adhesive resin layer, a paper layer, a heat-adhesive resin layer, a gas barrier material layer and a heat-adhesive resin layer in this order from the outer surface side, and the lid material comprises a laminated sheet formed by laminating a gas barrier material layer and a sealant layer. At least a part of the body part is formed with a flat part with a diameter of 5 mm or more, and two or more pairs of linear embosses are formed radially around the flat part.

Description

  The present invention relates to a cup paper container that seals food, beverages, and the like. More specifically, even if the cup paper container is depressurized due to a change in environmental temperature and the cup paper container is deformed, the appearance of the container is improved. The cup paper container is not damaged.

  2. Description of the Related Art Conventionally, a cup paper container having a structure in which an upper surface opening of a cup paper container containing food is sealed with a lid has been used. It is used for snacks that can be eaten easily. For these contents, a container having excellent light shielding properties and gas barrier properties such as oxygen and water vapor is required for preventing oxidation, and a cup paper container having excellent sealing properties is used.

  The reason for this is that the cup paper container does not damage the contents due to external force compared to food in a bag, has shape retention, and can be displayed in a standing state even in product display. This is because it does not take up space, has a good appearance, has an appealing effect, and is easy to handle.

  Cup paper containers are also used for liquor. This replaces the gas bottle and is used for its light weight and good handling. Recently, products in which beverages such as coffee and fruit juice are sealed in plastic cups have been sold. It is used in many ways because it is easy to drink.

  Usually, when liquor or a beverage is filled in a plastic cup or cup paper container, the filling temperature is filled at a temperature of 60 ° C. or higher to extend the sterilization and expiration date. Further, since sealing properties are required from light shielding properties, oxygen, and water vapor barrier properties, there is a problem that the interior of the container is depressurized and the container is deformed when the environmental temperature is lowered.

  The plastic cup has been devised to give gas barrier properties, increase the thickness of the resin, and improve the rigidity. However, there is a strong demand for cup paper containers due to the environmental nature of the waste in the containers themselves.

  However, since the cup paper container has excellent sealing properties, the inside of the container is depressurized, and there is a problem that a dent is generated in the body portion of the cup with a large surface area, deteriorating the appearance of the product, and reducing the product value. A solution was desired.

  The cup paper container will be described. FIG. 11 is an explanatory diagram showing an example of a process for creating a normal cup paper container. The cup paper container 50 has a lower end of the body part 2 formed by overlapping and joining one end of the fan-shaped body 1 (14) with the other end overlapped and folded to the outside. And the bottom material 3 are joined, and the upper end portion of the body portion 2 is wound around one or more times to form the mouth edge portion 5. Further, the cup edge 50 is sealed by heat sealing the lip 5 and the lid 6.

  FIG. 12 is a cross-sectional explanatory view showing an example of a reduced pressure inside a normal cup paper container. The temperature of the contents 8 when filling the contents 8 and the temperature of the contents 8 due to the environmental change in distribution, storage, display, etc., the inside of the container is depressurized, and the stress A that pulls in the inner direction works. The state where the lid part 7, the body part 2 and the bottom part 4 are pulled inward is shown. Among them, a dent is likely to occur in the body 2 having a large surface area. The case where the dent B arises in the trunk | drum 2 is shown. The place of occurrence is not constant, the appearance as a container is bad, and it is unsuitable for store display.

In order to solve these problems, for example, a paper container made of a laminated sheet in which a body layer, a bottom material, and a cover material are laminated in order of a paper layer, an aluminum foil, and a thermoadhesive resin layer. There is a proposal to provide fine ventilation holes having a moisture permeability of 1.0 g / m ² · 24 hr or less reaching a part of the paper layer (Patent Document 1).

  Providing such fine ventilation holes makes it difficult to manage the moisture permeability in the production process, and after creating a laminated sheet, in order to measure the moisture permeability, if a sheet whose measured value is out of range is created There are problems such as poor production efficiency such as disposal.

  There is also a proposal to prevent the cup paper container from appearing deformed by embossing the bottom material of the cup paper container into a diagram structure, and even if the inside of the cup paper container is depressurized, the embossment of the bottom material is deformed toward the inside of the container. Yes (Patent Document 2).

  However, in order to emboss the bottom material into a diagram shape, quality control is difficult. In addition, since the weight of the contents is applied to the bottom material, there is a problem that it is difficult to promote deformation in the inner direction of the container.

JP 2003-291194 A JP 2009-120264 A

  In view of the problems of the background art, even if the cup is a cup paper container sealed with food, beverages, etc., even if the environmental temperature changes and the cup paper container has a dent, the appearance of the product will not be impaired, and the product value will be reduced. There is no cup paper container to provide.

  In order to solve the above problems, the inventors have intensively studied and completed the present invention.

The invention according to claim 1 of the present invention forms a body part by overlapping and joining one end part of a fan-shaped body part to the folded adhesive part that is folded and bonded outward. In a cup paper container in which a bottom material is joined to the lower end portion of the body portion and the upper end portion is curled outwardly to form a lip portion, and the lip portion of the container body is sealed with a lid.
The body material and the bottom material are composed of a laminated sheet in which a heat-adhesive resin layer, a paper layer, a heat-adhesive resin layer, a gas barrier material layer, and a heat-adhesive resin layer are laminated in that order from the outer surface side,
And the lid material is a cup paper container comprising a laminated sheet in which a gas barrier material layer and a sealant layer are laminated,
A flat portion having a diameter of 5 mm or more in at least one portion of the body portion;
Two or more pairs of linear embosses radially around the flat part;
Is a cup paper container.

  The invention according to claim 2 of the present invention is the cup paper container according to claim 1, wherein the pair of linear embosses are arranged symmetrically with respect to the flat portion as a boundary.

  The invention according to claim 3 of the present invention is the cup paper container according to claim 1 or 2, wherein the shape of the linear emboss is convex inward.

The invention according to claim 4 of the present invention is the cup paper according to any one of claims 1 to 3, characterized in that the linear embossing is respectively disposed at an opposite position of the body portion. It is a container.

  The invention according to claim 5 of the present invention is characterized in that the linear emboss has a depth of 0.05 mm to 0.5 mm and a width of 0.05 mm to 0.5 mm. It is a cup paper container of any one of these.

  The invention according to claim 6 of the present invention is characterized in that the shape of at least one pair of linear embosses arranged symmetrically is convex outward. It is a cup paper container.

  Invention of Claim 7 of this invention is a polyethylene terephthalate film in which the said gas barrier material layer vapor-deposited aluminum foil, aluminum oxide, or silicon oxide, It is any one of Claims 1-6 characterized by the above-mentioned. It is a cup paper container.

According to claim 1 of the present invention, the paper container of the present invention is formed by joining one end portion of a fan-shaped body member by folding the other end portion over the folded adhesive portion that is folded and bonded outward. A cup paper container in which a body portion is formed, a bottom material is joined to the lower end portion of the body portion, and the upper end portion is curled outwardly to form an outer edge portion. In
The body material and the bottom material are each composed of a laminated sheet in which a heat-adhesive resin layer, a paper layer, a heat-adhesive resin layer, a gas barrier material layer, and a heat-adhesive resin layer are laminated in this order from the outer surface side, and the lid The material is a cup paper container made of a laminated sheet in which a gas barrier material layer and a sealant layer are laminated,
A flat portion having a diameter of 5 mm or more in at least one portion of the body portion;
Two or more pairs of linear embossing are formed radially around the flat portion. By providing a flat part with a diameter of 5 mm or more and two or more pairs of linear embosses radially around the flat part, the inside of the container is depressurized due to environmental changes, and the linear The emboss absorbs the stress and promotes the dent at the linear embossed portion. Therefore, the recessed portion is concentrated on the linear embossed portion. It is possible to prevent the dents from being randomly generated.

  Further, when there is no flat portion, the stress in the inner direction is concentrated at the intersection where the linear embosses intersect, and a dent is generated. In addition, the stress may be excessively concentrated at the intersection, and may be damaged. Moreover, in the flat part whose diameter is less than 5 mm, the effect of promoting the dent is small because the stress in the inner direction does not concentrate on the linear embossing.

  According to a second aspect of the present invention, the pairs of linear embossments are arranged symmetrically with a flat portion as a boundary. By arranging each pair of linear embosses symmetrically on the boundary of the flat portion, the stress in the inner direction can be dispersed and promoted in the embossed lines arranged symmetrically.

  According to a third aspect of the present invention, the shape of the linear emboss is convex inward. By making the shape of the linear embossing convex inward, the inside of the container is depressurized, and even if stress occurs in the inner direction in the trunk, the linear embossing is convex inward. Absorbs and promotes dents. Can be recessed at the linear embossed part. Only the linear embossed portion of the container body is recessed. On the other hand, if you raise the rigidity by providing a convex part on the outside, the part is strong against stress in the inner direction, so the stress is concentrated in the part where the linear embossing is not provided, and the concave part becomes random There is.

According to Claim 4 of this invention, the said linear embossing is each arrange | positioned in the location which the said trunk | drum opposes. By arranging the radial linear embossing at the place where the container body faces each other, the container shape can be made uniform even when it is recessed, and the container can be made into a good-looking container that does not impair the appearance of the container.

  According to claim 5 of the present invention, the linear embossing has a depth of 0.05 mm to 0.5 mm and a width of 0.05 mm to 0.5 mm. If the depth is less than 0.05 mm, the internal stress cannot be absorbed. On the other hand, if the depth is 0.5 mm or more, dents are likely to occur and become unstable. By setting the depth of the linear embossing within this range, it is possible to obtain a container that does not impair the appearance of the container by absorbing and promoting stress in the internal direction. Moreover, it is the same also about a width | variety, By making it the said range, it can be set as the container which does not impair the external appearance of a container.

  According to claim 6 of the present invention, the shape of at least one pair of linear embosses arranged symmetrically is convex outward. Since the stress in the inner direction is applied to the linear embossed line and the convex shape is easier to dent on the inner side, the convex emboss is first recessed on the inner side. The embossing which is convex outward can maintain a decorative effect using a dent in order to maintain the state as it is.

  According to claim 7 of the present invention, the gas barrier material layer is a polyethylene terephthalate film on which aluminum foil, aluminum oxide or silicon oxide is deposited. The cup paper container of the present invention can be used for foods and beverages that require gas barrier properties such as oxygen and water vapor. By laminating these gas barrier material layers, the contents in the cup paper container can be stored for a long time.

  The cup paper container of the present invention has excellent gas barrier properties, and forms a flat part in the body part and two or more pairs of linear embosses radially around the flat part, thereby causing depression (deformation) in the container due to reduced pressure. Even if this occurs, it is not random but can be concentrated on the linear embossed portion. It is a cup paper container in which the concave portion is promoted to the linear embossed portion so as to impair the appearance of the product. That is, the appearance dent becomes a part of the design (not noticeable), and there is an effect of not reducing the commercial value.

It is explanatory drawing which shows an example of the cup paper container of this invention. FIG. 2 is a cross-sectional explanatory view taken along line CC ′ of FIG. FIG. 2 is a cross-sectional explanatory view taken along the line CC ′ in the reduced pressure state of FIG. It is explanatory drawing which shows an example of two pairs of linear embossing by the linear embossing of this invention. It is explanatory drawing which shows an example of three pairs of linear embossing by the linear embossing of this invention. It is explanatory drawing which shows an example of four pairs of linear embossing by the linear embossing of this invention. It is explanatory drawing which shows an example of the linear embossing which does not have a flat part by the linear embossing of this invention. It is sectional explanatory drawing which shows an example of the laminated sheet of the trunk | drum and bottom material of the cup paper container of this invention. It is sectional explanatory drawing which shows an example of the lamination sheet of the cover material of the cup paper container of this invention. It is explanatory drawing which shows an example of the product form of the cup paper container of this invention. It is explanatory drawing which shows an example of the manufacturing process of a normal cup-shaped paper container. It is sectional explanatory drawing which shows an example of the pressure reduction state in the normal cup paper container.

  Hereinafter, modes for carrying out the present invention will be described.

FIG. 1 is an explanatory view showing an example of a cup paper container 60 of the present invention. Two pairs of linear embosses 10 are radially arranged around the flat portion 9 and the flat portion 9 in the body portion 2 of the cup paper container, and the linear embosses 10 are arranged symmetrically with the flat portion 9 as a boundary. Even if the inside of the container is depressurized and stress is generated in the inner direction, the linear embossed portion is preferentially recessed in the inner direction to absorb the stress. A depression is generated in the linear embossed portion. Therefore, the place where a dent arises can be determined, and the decoration effect can be taken out by combining with the cosmetics by printing.

  FIG. 2 is a cross-sectional explanatory view taken along the line CC ′ of FIG. It shows that the shape of the linear emboss is convex inward. By providing the convex shape 12 on the inner side, the stress A in the internal direction due to the reduced pressure is preferentially received, and the stress is absorbed to promote the generation of the dent. Therefore, a dent is not generated at random, but a site where the dent is generated can be determined.

  FIG. 3 is a cross-sectional explanatory view taken along the line CC ′ in the reduced pressure state of FIG. 1. It is explanatory drawing when the stress to the internal direction by pressure reduction is received preferentially, a stress is absorbed, and the dent B was produced. Since the shape of the linear emboss is convex inward, the dent is promoted.

  FIG. 4 is an explanatory view showing an example of two pairs of linear embossing according to the present invention. Two pairs of linear embosses 10 are provided radially around the flat portion 9. The two pairs of linear embosses 10 are convex at the inner side and are provided at symmetrical portions with the flat portion 9 interposed therebetween.

  FIG. 5 is an explanatory diagram showing an example of three pairs of linear embossing according to the present invention. Three pairs of linear embosses 10 are provided radially around the flat portion 9. The three pairs of linear embosses 10 are convex at the inner side and are provided at symmetrical portions with the flat portion 9 interposed therebetween.

  FIG. 6 is an explanatory view showing an example of four pairs of linear embossing in the linear embossing of the present invention. The four pairs of linear embosses 10 are provided at symmetrical positions with the flat portion 9 in between. The four pairs of linear embosses 10 are alternately provided with a convex shape 12 on the inner side and a convex shape 13 on the outer side. Since the embossing of the inner convex shape 12 is easy to dent, and the outer convex shape 13 is difficult to dent, it is possible to obtain a further decorative effect by providing them alternately and combining with a printing beauty.

FIG. 7 is an explanatory view showing an example of the linear embossing having no flat portion with the linear embossing of the present invention.
There are no flat portions and three pairs of linear embosses 10 are provided. The linear emboss is convex inward. The part 11 where each linear emboss intersects has a problem that the stress A in the inner direction is concentrated and the part is damaged.

  Moreover, the linear embossing 10 is provided at each of the opposing portions of the body portion 2 so that the stress A in the internal direction due to the reduced pressure is absorbed by the entire body portion. Therefore, the absorption of stress is dispersed in the respective linear embosses provided at the opposing portions of the body portion 2, and the dents are promoted in the portions. The part where the dent is generated can be determined.

  FIG. 10 is an explanatory view showing an example of a product form of the cup paper container 60 of the present invention. After the container body 25 is filled with the contents 8, the cup paper container is sealed by heat-sealing the lip 5 of the container body with the lid material 6. In some cases, the cup is a cup paper container in which a plastic lid member 26 is further covered on the lid member so that the heat-sealed lid member is protected from external force, and a straw 27 is attached to the outer side surface of the container body. It is a product form that can break through the lid with a straw and eat and drink through the straw.

  The present invention will be described in more detail.

As shown in FIG. 11, the cup paper container 50 includes a container body 25 composed of the body portion 2 and the bottom material 3, and a lid material 6 that closes the upper surface opening thereof. As shown in FIG. 8, the body material 1 and the bottom material 3 forming the body portion 2 are formed from the outer surface with a thermal adhesive resin layer 16, a paper layer 17, a thermal adhesive resin layer 18, a gas barrier material layer 19, and a thermal adhesive. It consists of the lamination sheet 15 which laminated the functional resin layer 20 in order. In particular, the paper layer 17 and the gas barrier material layer 19 are bonded together via the thermal adhesive resin layer 18, and the thermal adhesive resin layer 16 and the paper layer 17, the gas barrier material layer 19 and the thermal adhesive resin layer 20. The bonding can be performed via an adhesive. As shown in FIG. 9, the lid member 6 is composed of a laminated sheet 21 in which a gas barrier material layer 19 and a sealant layer 22 are laminated, and the bonding can be performed via an adhesive.

  The manufacturing method of the cup paper container of this invention is demonstrated. Although not shown in the drawing, a plurality of fan-shaped body blanks are arranged and printed on the roll-shaped paper layer 17, and an outer portion including one edge of the body blank is included. Is punched as a long window.

  A thermal adhesive resin layer 18, a gas barrier material layer 19, and a thermal adhesive resin layer 20 are laminated on the inner surface of the paper layer 17 on which a long window is formed by printing a body blank, and heat is applied to the outer surface of the substrate. The laminated sheet 15 is formed by laminating the adhesive resin 16. At this time, the resin portion is formed by the two thermoplastic resin layers 16 and 18 having the paper layer sandwiched between the long windows of the paper layer 17.

  Unnecessary portions of the body blank on the side on which the long window portion is formed, including a resin portion extending outward from the paper layer, of the laminated sheet 15 are continuously cut.

  A plurality of printed fan-shaped body blanks are punched out of the laminated sheet from which unnecessary portions on one side are cut off, and one body blank 1 (14) having a resin portion formed thereon is created.

  The linear embossing of the present invention can be processed simultaneously with the formation of the long window. Further, it may be processed at the time of forming the body blank 1 (14) or after that. Further, even during the laminating process, linear embossing can be formed on the body blank, and the depth and width are within the range. Two or more pairs of linear embosses 10 are radially provided on the body blank 1 (14) symmetrically about the flat portion 9. Further, the cup paper container is provided so as to face the body portion 2.

  The method for forming the linear embossing 10 uses a Thomson punching die in which an embossing blade is embedded in a desired shape and a die having an embossing wire, and the linear embossing is convex on the inside of the laminated sheet. Thus, it can form by pressing. It can form by designing from the height of an embossing blade and the thickness of the lamination sheet to be used so that it may become depth 0.05mm-0.5mm and width 0.05mm-0.5mm.

  Through such a process, it is possible to obtain a body blank 1 (14) in which linear embossing is formed on the body blank and a resin portion extending outward is formed on one side edge.

  Next, as shown in FIG. 11, after the resin part which becomes the inner surface side of the body blank 1 (14) is folded outward, the heat-adhesive resin layer is adhered by heating, and then one end edge part is attached to the body part. The body part is created by laminating from the outer surface side and adhering the heat-adhesive resin layer.

  Next, the bottom material 3 is formed into a bottom-shaped circular shape in advance. The periphery of the bottom member 3 is bent downward at a right angle, and the lower end of the body 2 is curled so as to wrap around the periphery of the bottom member 3. As shown in FIG. 1, the curling part is thermally bonded by the heat-bonding resin layer of the body part 2 or the bottom material 3. Next, the peripheral edge portion of the upper end of the body portion 2 is wound around one or more times to form the mouth edge portion 5, that is, the flange portion. At this time, the left and right upper end portions of the body blank 14 are cut in advance, and the notches are provided, so that the level difference of the overlapping portion of the body portion of the flange portion can be minimized. Alternatively, the upper edge may be flattened by press-bonding the rim portion 5 from above and below in a state where it has been wound one or more times. The mouth edge portion 5 is flat, and the sealing performance with the lid material can be improved. In this way, the container body 25 can be created.

The paper layer used in the container main body, a basis weight of 200g ^{/ m 2} ~400g ^/ m 2 of the cup base paper, milk carton paper, kraft paper can be used. The shape of the container, a cup base paper depending on the size 200g ^{/ m 2} ~300g ^/ m 2 is preferred.

  Further, as the heat-adhesive resin layer, a polyolefin resin such as a polyethylene resin can be used. Bonding of the paper layer and polyethylene can be performed using a melt extrusion laminating method or a film laminating method. The thickness of the polyethylene resin is 15 μm to 80 μm. Preferably they are 15 micrometers-50 micrometers. What is necessary is just to determine suitably from the required quality of the contents.

  As the gas barrier material layer, aluminum foil, polyester film laminated with aluminum foil, aluminum vapor-deposited polyester film, polyester film vapor-deposited with metal oxides such as aluminum oxide, silicon oxide, and magnesium oxide can be used. In aluminum foil, 7 micrometers-12 micrometers are used. Moreover, in the vapor deposition polyester film, the vapor deposition thickness of the metal oxide is preferably in the range of 5 nm to 300 nm on the polyethylene terephthalate film, and the value may be appropriately selected.

  Bonding of the paper layer and the gas barrier material layer can be performed using a melt extrusion lamination method through polyethylene. The bonding between the heat-adhesive resin layer and the paper layer and the gas barrier material layer and the heat-adhesive resin layer can be performed using a melt extrusion laminating method or a film laminating method.

  As the constitution of the body and bottom material, for example, from the outer surface side, polyethylene resin layer / paper layer / polyethylene resin layer / aluminum foil / polyester film / polyethylene resin layer, polyethylene resin layer / paper layer / polyethylene resin layer / aluminum vapor deposition Polyester film / polyethylene resin layer, polyethylene resin layer / paper layer / polyethylene resin layer / metal oxide deposited polyester film / polyethylene resin layer, and the like can be used. It can be used by appropriately determining the quality required from the contents, distribution, and storage environment at the store.

  Next, the cover material 6 has a gas barrier material layer 19 and a heat-adhesive resin layer sealant layer 22 laminated thereon. As the gas barrier material layer, aluminum foil, polyester film laminated with aluminum foil, aluminum vapor-deposited polyester film, polyester film vapor-deposited with metal oxides such as aluminum oxide, silicon oxide, and magnesium oxide can be used. In aluminum foil, 7 micrometers-12 micrometers are used. As the heat-adhesive resin layer, a polyolefin-based resin such as a polyethylene resin can be used. The thickness of the polyethylene resin is 15 μm to 80 μm. Preferably they are 15 micrometers-50 micrometers. What is necessary is just to determine suitably from the required quality of the contents. The gas barrier material layer and the sealant layer can be bonded using a melt extrusion laminating method or a film laminating method.

  Moreover, as a structure of a lid | cover material, for example, aluminum foil / polyethylene resin layer, paper layer / aluminum foil / polyethylene resin layer, metal oxide vapor deposition polyester film / polyethylene resin layer, paper layer / metal oxide vapor deposition polyester film / polyethylene resin Layers etc. can be used.

  When using a cup paper container as shown in FIG. 8 to eat and drink using a straw, the lid material may be appropriately determined in consideration of the piercing property of the straw.

  Moreover, when eating and drinking without using a straw, it is preferable that the sealant layer of a lid | cover material is a sealant layer which has easy peel property. As the sealant layer having easy peel properties, there are a cohesive failure type and a delamination type.

The cohesive failure type is a type in which the sealant layer itself cohesively breaks down. Using a resin mixed with resin such as polypropylene, polyethylene, polystyrene, etc., it is formed into a film and laminated on the gas barrier material layer, or the coating liquid of this resin is used. It can be used by coating.

  For example, a resin in which a polyolefin resin such as polyethylene, high-density polyethylene, linear low-density polyethylene, or polypropylene is mixed with a polybutene resin, or a resin in which a polyolefin resin and a polystyrene resin are mixed can be used.

  The delamination type is a method in which a three-layer film is prepared by a coextrusion method and is peeled off from an intermediate layer. This coextruded film can be used by being laminated on the gas barrier material layer.

  Any of the above two types can be used as the sealant layer having easy peel properties. The thickness and the like may be appropriately determined from the adhesive strength with the lip, the peel strength, the peelability, and the like.

  You can print on the surface of the cup paper container to express the pattern and characters. The body material and the cover material can be printed by commonly used printing methods such as gravure printing, offset printing, flexographic printing, letterpress printing, and ink jet printing, which are used for printing plastic films and paper.

  As an example of the product form of the cup paper container of the present invention, a product in which a plastic lid is covered on a heat-sealed lid, the lid is protected from external force, and a straw is attached to the outer side surface of the container body. Forms are possible. It is also possible when the cover material is easily peeled and partially peeled to eat and drink with a straw, or when eating and drinking without using a straw. If a paper layer is laminated on the lid, it is possible to eliminate the need for a plastic lid.

  The cup paper container of the present invention is excellent in gas barrier properties and sealing properties, and is formed by forming a flat portion in the body portion and two or more pairs of linear embosses radially around the flat portion, thereby forming a recess due to decompression in the container. Even if (deformation) occurs, the cup paper container is not random but is concentrated on the linear embossed portion and does not impair the appearance of the product. That is, the appearance dent (deformation) is made inconspicuous by making it a part of the design. Therefore, there is an effect that the commercial value is not lowered.

  The cup paper container of the present invention is a cup paper container that does not impair the appearance of the product even when the environmental temperature changes from the temperature when filling the contents and the inside of the container is in a reduced pressure state. It can be used in foods such as beverages, solid foods, and jelly foods whose contents are hot-filled.

DESCRIPTION OF SYMBOLS 1 Body material 2 Body part 3 Bottom material 4 Bottom part 5 Mouth part (flange part)
6 Lid material 7 Lid part 8 Contents 9 Flat part 10 Linear emboss 11 Linear crossing part 12 Convex shape inside 13 Convex shape outside 14 Body blank (fan shape)
15 Laminated sheet (body, bottom material)
16, 18, 20 Thermal adhesive resin layer 17 Paper layer 19 Gas barrier material layer 21 Laminated sheet (cover material)
22 Sealant layer 25 Container body 26 Plastic lid material 27 Straw 50 Normal cup paper container 60 Cup paper container of the present invention 70 An example of product form of the cup container of the present invention A Stress to pull inward B Bent

Claims (7)

The one end of the fan-shaped body is folded outward and bonded, and the other end is overlapped and joined to form the body, and the bottom is joined to the lower end of the body In the cup paper container in which the lip portion of the container body formed by curling the upper end portion outwardly to form the lip portion is sealed with a lid,
The body material and the bottom material are composed of a laminated sheet in which a heat-adhesive resin layer, a paper layer, a heat-adhesive resin layer, a gas barrier material layer, and a heat-adhesive resin layer are laminated in that order from the outer surface side,
And the lid material is a cup paper container comprising a laminated sheet in which a gas barrier material layer and a sealant layer are laminated,
A flat portion having a diameter of 5 mm or more in at least one portion of the body portion;
Two or more pairs of linear embosses radially around the flat part;
A cup paper container characterized in that is formed.   2. The cup paper container according to claim 1, wherein the pair of linear embosses are arranged symmetrically with respect to the flat portion as a boundary.   3. The cup paper container according to claim 1, wherein the shape of the linear emboss is convex inward.   The cup-shaped paper container according to any one of claims 1 to 3, wherein the linear embossing is disposed at a position where the body portion is opposed to the linear embossment.   5. The cup paper container according to claim 1, wherein the linear emboss has a depth of 0.05 mm to 0.5 mm and a width of 0.05 mm to 0.5 mm. .   The cup paper container according to any one of claims 1 to 5, wherein the shape of at least one pair of linear embosses arranged symmetrically is convex outward. The cup paper container according to any one of claims 1 to 6, wherein the gas barrier material layer is a polyethylene terephthalate film on which aluminum foil, aluminum oxide, or silicon oxide is deposited.

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