JPH03200536A - food and drink paper containers - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a paper container in which food and drink products are enclosed.

[Conventional technology]

In paper containers in which various beverages and foods are sealed, the sealing portion is formed by the thermal welding ability of the paper container packaging material that forms the container body and the lid packaging material that forms the lid. Packaging materials for paper containers and packaging materials for lids that include a heat-sealing resin layer made of polyolefin resin are used so that the heat welding ability of polyolefin resin can be utilized.

[Problem to be solved by the invention]

However, in paper containers obtained by the paper container packaging material and the lid packaging material having the heat-sealing resin layer made of polyolefin resin, the inner peripheral surface layer is formed by the heat-sealing resin layer made of polyolefin resin. During the formation of the polyolefin resin layer to obtain the laminated sheets used as packaging materials, and during the process of sealing paper containers with the laminated sheets, the polyolefin resin undergoes thermal decomposition and becomes fat. Since volatile components such as group hydrocarbons are produced, this transfers to the filling inside the paper container, which has the disadvantage of producing an odd taste or odor in the filling. In addition, in a container in which the inner peripheral surface layer is formed of a heat-sealing resin layer made of a polyolefin resin, the heat-sealing resin layer made of a polyolefin resin is a flavoring component in the inner filling housed in the container. Because it is easy to adsorb and at the same time easily permeate, the storage performance for the filling material containing fragrance ingredients is not sufficient. In contrast, the present invention provides a paper container for food and beverages made of a so-called composite container, which has excellent aroma retention performance for the inner filling and also has excellent thermal bonding strength at the sealing portion.

[Means to solve the problem]

In the food/drink paper container of the first invention, the end surfaces of the left and right side ends of a substantially rectangular laminated sheet for paper containers are brought into contact with each other, and the first A cylindrical container body formed by pasting a sealing tape and a second sealing tape on the outer peripheral surface, and both upper and lower sides of the container body. The lid body seals the open mouth portion, and the lid body includes a concave portion inscribed in the open mouth portion of the container body, and a peripheral portion projecting outward from the concave portion in the shape of a flange. A lid molded body consisting of is placed on the container body,
It is brought into contact with both lower open openings, and the back surface of the lid molded body, the inner surface of the body near the open mouth of the container body, the edge of the body, and the outer circumferential surface of the body are bonded by heat pressure. By this, it is molded and bonded to the container body. In the paper food/beverage container of the invention of Water Bottle 1, the container body is made of paper having an inner surface layer made of an amorphous to low crystalline saturated polyester resin layer having a glass transition temperature of 40"C or higher. The laminated sheet for containers is formed so that the inner surface layer of the laminated sheet for paper containers becomes the inner peripheral surface layer of the container, and the lid molded body is made of a non-containing material having a glass transition temperature of 40°C or higher. The laminated sheet for lids has an inner surface layer made of a crystalline to low-crystalline saturated polyester resin layer, so that the inner surface layer of the laminated sheet for lids is the inner surface layer of the container, that is, the back layer of the molded lid. Further, the end surfaces of the left and right end portions of the substantially rectangular paper container laminated sheet described above are brought into contact with each other, and the sheet is pasted onto the inner circumferential surface of the resulting contact portion. The first sealing tape has a core layer made of a biaxially stretched thermoplastic synthetic resin film and is laminated on the front and back sides of the core layer.
The second sealing tape is made of a laminated tape with an amorphous to low crystalline saturated polyester resin layer having a temperature of at least
It is formed of a laminated tape consisting of a core layer made of an axially oriented thermoplastic synthetic resin film and poly-first nofine resin layers laminated on the front and back sides of the core layer. The paper food and beverage container of the invention of Water Bottle 2 is the food and beverage paper container of the invention of Water Bottle 1, in which the amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40° C. or higher is composed of ethylene glycol and terephthalic acid. It is made of a saturated polyester resin which is made of a copolymer of ethylene glycol, terephthalic acid, and an alcohol other than ethylene glycol and/or a carboxylic acid other than terephthalic acid. The paper container for food and drink according to the invention of Water Bottle 3 is the paper container for food and drink according to the invention of Water Bottle 2, in which an amorphous to low crystalline saturated Bossester resin layer having a glass transition temperature of 40° C. or more is a part of the acid component. It is made of saturated polyester resin containing an isophthalic acid component. The food/beverage paper container of the invention of Water Bottle 4 is the food/drink paper container of the invention of Water Bottle 2 or the third invention, which has an amorphous to low crystalline saturated polyester resin layer having a glass transition temperature of 40°C or higher. , is formed from a saturated polyester resin containing 1,4-cyclohexanedimethanol as a part of the alcohol component. The paper container for food and drink according to the invention of water bottle 5 includes the invention of water bottle 2,
In the food/beverage paper container of the third invention or the fourth invention, the amorphous to low crystalline saturated polyester resin layer having a glass transition temperature of 40°C or higher contains trimellitic acid as part of the acid component. Alternatively, it is made of a saturated polyester resin containing trimethylolpropane as a part of the alcohol component, or even containing both of these. In the food and drink paper containers of each of the present inventions having the above configuration,
The amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40° C. or higher is formed of an amorphous to low crystalline saturated polyester resin with a crystallinity of 10% or lower, for example, Dicarboxylic compounds made of dialcohol components such as ethylene glycol, propylene glycol, and l,4-cyclohexanedimethanol, aliphatic dicarboxylic acids such as adipic acid and sebacic acid, and aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, and diphenyldicarboxylic acid. Polyester resins obtained by cocondensation polymerization with acid components, specifically ethylene glycol and terephthalic acid, ethylene glycol and isophthalic acid and terephcuric acid, 1,4-cyclohexanedimethanol and ethylene glycol and terephthalic acid, and propylene glycol and terephthalic acid. Polyester resins made of co-condensed polymers of combinations of isophthalic acid and terephthalic acid, etc., or polyester resins made from the above-mentioned terephthalic acid and ethylene glycol as base raw materials, are added as part of the acid component, such as trimellitic acid. Alternatively, a trivalent alcohol such as trimethylolpropane may be used as one part of the alcohol component, or a trivalent alcohol such as trimethylolpropane may be used as one part of the alcohol component and one part of the acid component. It is formed from a polyester resin obtained by using trivalent carboxylic acid and trivalent alcohol. In addition, if the polyester resin is a polyester resin in which the aliphatic dicarboxylic acid component in the acid component is 10% by weight or more, the resin layer made of the resin will not have sufficient fragrance retention performance, so it is preferable. do not have. In the paper container for food and beverages of the present invention, the paper container laminated sheet formed into the cylindrical container body is composed of a paper container base material and a heat sealing resin layer laminated on the paper container base material. In addition, the laminated sheet for the lid used in the molded lid is composed of a base material for the lid and a resin layer for heat sealing laminated on the base material for the lid. , each of these heat-sealing resin layers has a glass transition temperature of 4.
It is formed of a single resin layer made of an amorphous to low crystalline saturated polyester resin with a temperature of 0°C or higher, or it consists of an amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40°C or higher. It is formed of a laminated resin layer including an inner surface layer. In addition, when the heat sealing resin layer is formed of a laminated resin layer of an amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40 ° C. or higher and another thermoplastic synthetic resin layer, is the inner surface layer of the laminated resin layer, that is, an amorphous layer having a glass transition temperature of 40° C. or higher.
A low-crystalline saturated polyester resin layer is laminated on the outermost side of the paper container base material. That is, the entire heat-sealing resin layer or the inner surface layer of the heat-sealing resin layer in a paper container laminated sheet formed into a cylindrical container body or a lid laminated sheet formed into a lid molded body. However, the glass transition temperature is 40
It is made of an amorphous to low crystalline saturated polyester resin with a glass transition temperature of 40°C or higher. A specific example of a heat-sealing resin layer made of a laminated resin layer formed by the above method has the following configuration: ■) Polyethylene resin layer/amorphous to low glass transition temperature of 40°C or higher Crystalline saturated polyester resin layer 2) Co-extrusion laminated resin layer 3 with adhesive polyethylene resin layer modified with carboxyl groups/amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40°C or higher ) Amorphous to low crystallinity saturated polyester resin layer/Adhesive polyester resin layer/Amorphous to low crystallinity saturated polyester resin layer with a glass transition temperature of 40'C or higher 4) Amorphous to low crystallinity Saturated polyester resin layer/1.
Crystalline polybuty-1-nonterephthalate resin layer made of a copolymer of 4-butanediol and terephthalic acid/amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40°C or higher 5) Amorphous to Low-crystalline saturated polyester resin layer/polycarbonate resin layer/amorphous to low-crystalline saturated polyester resin layer with a glass transition temperature of 40°C or higher 6) From a copolymer of 1.4-butanediol and terephthalic acid Crystalline polybutylene terephthalate resin layer/amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40°C or higher 7) Polycarbonate resin [/with a glass transition temperature of 40°C
The above amorphous to low crystalline saturated polyester resin layer 8) Polyethylene resin layer/Adhesive polyethylene resin layer modified with carboxyl groups/Glass transition temperature is 40
℃ or higher amorphous to low crystalline saturated polyester resin layer When the heat-sealing resin layer described above is composed of a laminated resin layer, this laminated resin layer may be a coextruded laminated resin layer, or , an adhesive laminated resin layer in which an adhesive is interposed between each resin layer. In addition, the stability of the amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40°C or higher in the heat sealing resin layer is poor when the thickness is less than 5LL; If the thickness exceeds the thickness, the resin layer becomes hard and tends to deteriorate the molding properties of the laminated sheet for paper containers. A resin layer for heat sealing consisting of a single resin layer of an amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40°C or higher or a laminated resin layer of the saturated polyester resin layer and another thermoplastic synthetic resin layer. In a laminated sheet for paper containers consisting of a laminated structure of a base material for paper containers and a base material for paper containers, the base material for paper containers includes a metal layer made of metal foil, metallized film, etc.
A laminated sheet made of cardboard, a polyolefin resin layer, etc. is used, and the outer surface layer is usually made of a polyolefin resin layer so that the outer surface layer of the body has water resistance and heat weldability. A container base material is used. Also, for heat sealing, it can be made of a single resin layer of an amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40°C or higher, or a laminated resin layer of the saturated polyester resin layer and another thermoplastic synthetic resin layer. In a laminated sheet for a lid consisting of a laminated structure of a resin layer and a base material for the lid, the base material for the lid includes a metal layer made of metal foil, metallized film, etc.
A laminated sheet made of stretched plastic film, thermoplastic synthetic resin layer, etc. is used, and the outer surface layer is usually formed of a polyvinyl chloride resin layer so that the laminated sheet for the lid has cold molding properties. A base material for the lid body is used. In addition, the above-mentioned laminated sheet h for paper containers comprising an inner surface layer consisting of an amorphous to low crystalline saturated polyester resin layer with a glass transition temperature of 40°C or higher, and a glass transition temperature of 40°C
In the above laminated sheet for a lid having an inner surface layer made of an amorphous to low crystalline saturated polyester resin layer, when a metal layer such as Af2 foil is provided in the laminated sheet, the metal layer and If an intervening film such as a stretched polyethylene te-1-nophthalate film, a stretched nylon film, or a stretched polypropylene film is laminated between the heat-sealing resin layer, the heat-sealing process in the paper container molding process can be easily achieved. This prevents the metal layer from flowing due to melting of the heat-sealing resin layer, and provides a paper container for food and beverages that is free from leakage caused by cracks in the metal layer. The first sealing tape used for the container body of the food and beverage paper container of the present invention, that is, the end surfaces of the left and right side ends of the paper container laminated sheet are brought into contact with each other, and the resulting contact is made. The first sealing tape attached to the inner peripheral surface of the section has a core layer made of a biaxially stretched thermoplastic synthetic resin film and a glass transition temperature layer laminated on the front and back sides of the core layer. 40
It is composed of a laminated structure with an amorphous to low crystalline saturated polyester resin layer with a temperature of ℃ or higher, and has good adhesion with the inner circumferential surface layer of the body, and also has good adhesion with the inner peripheral surface layer of the body. It has excellent fragrance retention properties. In addition, the second sticking tape, that is, the end surfaces of the left and right side ends of the laminated sheet for paper containers are brought into contact with each other, and the second sealing tape is attached to the outer circumferential surface of the resulting contact portion. The stopper tape is a laminated tape consisting of a core layer made of a biaxially stretched thermoplastic synthetic resin film and polyolefin resin layers laminated on the front and back sides of the core layer. It has good adhesion and toughness to the outer peripheral surface.

[For use]

In the food and beverage paper containers of the first to fifth inventions having the above-mentioned configuration, the entire inner circumferential surface layer of the paper container, that is, the entire surface of the side that comes into contact with the inner filler, has a glass transition temperature of 40° C. or higher. It is composed of an amorphous to low crystalline saturated polyester resin layer, and the resin layer constituting this inner peripheral surface layer has a glass transition temperature of the saturated polyester resin constituting the resin layer. It exhibits excellent fragrance retention performance in an atmosphere with a temperature of less than 40 degrees Celsius.In relation to this, the actual paper containers for food and beverages are placed in an atmosphere with a temperature of less than 40 degrees Celsius. Paper containers for food and beverages exhibit excellent aroma retention performance for the filling material. In addition, in the food and beverage paper containers of the second to fifth inventions, the excellent It has both fragrance retention performance and heat resistance due to the copolymerized portion of an alcohol component other than ethylene glycol and/or a carboxylic acid component other than terephthalic acid. Even after being heated during hot filling, the resin layer serving as the inner circumferential surface layer still has excellent thermal bonding performance, and the paper container formed after filling with the inner filler by hot filling has excellent adhesive properties. 6. A sealed part with excellent adhesive strength can be obtained in the heat-sealed part.

【Example】

Hereinafter, the specific structure of the food/beverage paper container of the present invention will be explained using examples. Example 1 60 Sheet In FIG. 2, a biaxially stretched polyethylene terephthalate resin film 2 with a thickness of 12μ and a foil 3 with a thickness of 9μ are dry laminated with a urethane adhesive, and then the surface is A cardboard (basis weight 315 g/m'') 5 coated with a coating layer 4 made of polyethylene resin with a thickness of 15 μm is placed between the aforementioned AI2 foil 3 and a polyethylene resin coated with a polyethylene resin [random ethylene methacrylic acid] with a thickness of 20 μm. Copolymer with Ucquerel 0910c: Mitsui DuPont Polychemical)
] were laminated with a melt-extruded resin layer 6 interposed therebetween. In addition, in the step of laminating the coat layer 4 of polyethylene resin on the cardboard 5 and the step of laminating the melt-extruded resin layer 6 of polyethylene resin, the cardboard surface on which the synthetic resin layer is to be laminated is subjected to corona discharge treatment in advance. Attached. Thereafter, on two sides of the biaxially stretched ethylene terephthalate resin film with a thickness of 12 μ, a 50 μ thick layer of non-quality saturated polyester resin (manufactured by Eastman Kodak Company: PETG6763) having a glass transition temperature of 81° C. was applied.
The film 7 was dry laminated with a urethane adhesive to obtain a paper container laminate sheet 8 having an inner surface layer 7 made of a non-quality saturated polyester resin layer having a glass transition temperature of 81'C. In Fig. 3 of the above-mentioned page 2, a biaxially stretched polyethylene terephthalate resin film 9 with a thickness of 12LL and an Af2v with a thickness of 30μ are shown.
31O and dry laminated with urethane adhesive,
Next, a 200u thick polyvinyl chloride resin sheet ll
was dry laminated on the surface of the above-mentioned foil lO, and then laminated on nine sides of the above-mentioned 12-thick biaxially stretched polyethylene terephthalate resin film with a glass transition temperature of 81".
A film 12 with a thickness of 50μ made of non-quality saturated polyester resin (manufactured by Eastman Kodak Co., Ltd.: PETG 6763) of C is dry laminated with a urethane adhesive, and a non-quality saturated polyester resin with a glass transition temperature of 81"C is made. A laminated sheet 13 for a lid body was obtained which had an inner surface layer 12 made of a polyester resin layer.In Figure 4 of Kei Tape 1, a core layer 13 made of a biaxially stretched polyethylene terephrocrate resin film having a thickness of 16u was obtained. A non-quality saturated polyester resin with a glass transition temperature of 81"C (manufactured by Eastman Kodak Company:
PETG 6763) 25μ thick film 1
4.15 was dry laminated with a urethane adhesive to obtain a first sealing tape designated by reference numeral 16. 2, Kei Tape In FIG. 5, a core layer 17 made of a biaxially stretched polyethylene terephthalate resin film having a thickness of 16 μm is coated with a polyethylene resin film having a thickness of 25 μm on each of the front and back surfaces.
The films 18° and 19 were dry-laminated using a urethane adhesive to obtain a second sealing tape designated by the reference numeral 20. In FIG. 6, end surfaces 22 and 23 at both left and right ends of a substantially rectangular blank board 21 obtained by cutting the paper container laminated sheet 8 described above are connected. By applying the first sealing tape 16 to the inner circumferential surface of the resulting abutting portion and adhering the second sealing tape 20 to the outer circumferential surface, the blank plate 21 is formed. Tired of indecency. Tosei Sokodan A In FIG. 7, a disk-shaped laminated sheet obtained by punching and forming the aforementioned laminated sheet 13 for the lid is subjected to cold forming, and its outer circumferential surface is formed into the opening of the aforementioned container body 24. A lid molded body 27 was obtained, which consisted of a concave portion 25 having dimensions that were inscribed, and a peripheral portion 26 projecting outward from the upper edge of the concave portion 25 in the form of a flange. Note that the surface of the lid molded body 27 is covered with the lid laminated sheet 13.
It is composed of a polyvinyl chloride resin sheet 11. 8 and 9, the recessed part 25 of the lid molded body 27 is fitted 9 into the upper opening of the container body 24 so as to be inscribed therein, and then the upper part of the recessed part 25 is inscribed. The peripheral part 26 that projects outward from the edge in the shape of a flange is attached to the container body 24.
is bent at the upper end edge 28, and the back surface of the lid body molded body 27,
By bonding the inner circumferential surface 7 of the container body 24 near the open mouth, the upper edge 28, and the outer circumferential layer 4 of the body,
A lid 30 forming the top and bottom of the container was molded and adhered. Further, by repeating the above-described method for the lower open mouth of the container body 24, the lid 3 forming the lower bottom of the container, which is bonded by thermo-pressure to the lower edge 29 of the container body 24, is removed.
1 was molded and adhered to obtain a paper container for food and drink, which is an example of the present invention and is designated by the symbol 1 in FIG. Example 2 A non-quality saturated polyester resin (Eastman Kodak) with a glass transition temperature of 81°C was used in each of the laminated sheet for paper containers, the laminated sheet for lids, and the first sealing tape used in Example 1. Manufactured by: PETG 6763
) layer, a low-crystalline saturated polyester resin with a glass transition temperature of 71°C (total amount of ethylene glycol and terephthalic acid: 187 parts by weight, isophthalic acid: 13 parts by weight, degree of crystallinity = 3%) is used. A paper container for food and drink, which is an example of the present invention, was obtained by the same steps as those in Example 1 except for forming the crystalline saturated polyester resin layer. Example 3 The laminated sheet for paper containers, the laminated sheet for lids, and the first sealing tape used in Example 1 were each made of a non-quality saturated polyester resin (Eastman Co., Ltd.) with a glass transition temperature of 81'C. Manufactured by Kodak: PETG 676
3) Instead of the layer, a non-grade saturated polyester resin with a glass transition temperature of 81°C (total amount of ethylene glycol and terephthalic acid: 163.5 parts by weight, 1.4-cyclohexanedimethanol: 35 parts by weight, Mellitic acid = 1
．． A paper container for food and beverages, which is an example of the present invention, was obtained by the same steps as in Example 1 except for forming a low-crystalline saturated polyester resin layer (5 parts by weight).

【Effect of the invention】

In the paper containers for food and beverages according to the first to fifth aspects of the present invention, all of the inner circumferential surface layers of the paper containers are formed of an amorphous to low crystalline saturated polyester resin layer having a glass transition temperature of 40°C or higher. It's Teruchino. Therefore, in the food/beverage paper container of the actual invention, all layers in contact with the filling inside the container are composed of a resin layer made of a linear saturated polyester resin having a glass transition temperature of 40°C or higher. Because of this, the aroma contained in the inner filler is not absorbed into the packaging material, effectively preventing changes in the taste and aroma of the inner filler, and exhibits excellent fragrance retention performance. be done. In addition, the resin layer that becomes the inner circumferential surface layer of the paper container described above is formed of an amorphous to low crystalline saturated polyester resin with a crystallinity of 10% or less.
When molding the food/beverage paper container, the excellent thermal adhesion performance of this amorphous to low crystalline saturated polyester resin layer can be utilized, so that a heat-sealed portion with excellent thermal adhesion strength can be obtained.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of the food and beverage paper container of the present invention, and FIG. 2 is a sectional view schematically showing an example of a laminated sheet for a paper container formed into the container body. FIG. 3 is a cross-sectional view schematically showing an example of a laminated sheet for a lid that is formed into a molded lid, and FIG. A cross-sectional view horizontally showing an example of the first sealing tape attached to the inner circumferential surface of the contact part,
FIG. 5 shows a second
A sectional view showing an example of the sealing tape horizontally, FIG.
7 is a cross-sectional view showing the state of contact between the end faces at both left and right ends of the laminated sheet in the container body obtained by the laminated sheet for paper containers, and FIG. A perspective view showing an example of a molded lid body, No. 8
The figure is a perspective view illustrating the process of assembling the lid molded body to the container body, and FIG. 9 is a sectional view of essential parts showing the assembly and bonding state of the lid molded body to the container body. 8...l2...13...16...20...22...23... Laminated sheet for paper containers, inner surface made of unquality saturated polyester resin with glass transition temperature of 40°C or higher layer, a laminated sheet for lids, a first sealing tape, a second sealing tape, an end face at the left end of the laminated sheet for paper containers, an end face at the right end of the laminated sheet for paper containers, 24. ...Cylindrical container body, 27.. Lid molded body, 30.. Upper bottom lid. 31.. Lower bottom lid. 1... Paper container for food and beverages, 7... Inner surface layer made of a non-quality saturated polyester resin with a glass transition temperature of 40°C or higher,

Claims (1)

[Claims] 1. The left and right end surfaces of a substantially rectangular laminated sheet for paper containers are brought into contact with each other, and a first sealing tape is applied to the inner circumferential surface of the resulting contact portion. and a cylindrical container body formed by pasting a second sealing tape on the outer circumferential surface, and both open openings at the top and bottom of the container body. A molded lid body comprising a lid body for sealing, the lid body comprising a recessed part inscribed in the open mouth part of the container body and a peripheral part projecting outward from the recessed part in the form of a flange. It is in contact with both the upper and lower open mouths of the container body, and the back surface of the lid molded body, the inner circumferential surface of the body near the open mouth of the container body, the edge of the body, and the outer circumferential surface of the body. A paper container for food and beverages that is assembled and formed by thermo-pressure bonding, wherein the container body is amorphous with a glass transition temperature of 40° C. or higher.
A paper container laminated sheet having an inner surface layer made of a low-crystalline saturated polyester resin layer is formed so that the inner surface layer of the paper container laminated sheet becomes an inner peripheral surface layer of the container, Further, the lid molded body may be formed by a lid laminate sheet having an inner surface layer made of an amorphous to low crystalline saturated polyester resin layer having a glass transition temperature of 40° C. or higher. The inner surface layer is formed as an inner peripheral surface layer of the container,
Moreover, the first sealing tape has a core layer made of a biaxially stretched thermoplastic synthetic resin film and is laminated on the front and back sides of the core layer, and has a glass transition temperature of 40°C.
It is formed of a laminated tape with the above-mentioned amorphous to low crystalline saturated polyester resin layer, and the second sealing tape is made of a core layer made of a biaxially stretched thermoplastic synthetic resin film and A paper container for food and beverages characterized by being formed of a laminated tape with polyolefin resin layers laminated on the front and back sides of a core layer. 2. An amorphous to low-crystalline saturated polyester resin with a glass transition temperature of 40°C or higher is composed of ethylene glycol and terephthalic acid as main components, and an alcohol other than ethylene glycol and/or a carboxylic acid other than terephthalic acid. The paper container for food and beverages according to claim 1, which is made of a saturated polyester resin made of a copolymer. 3. Food and beverage paper according to claim 2, wherein the amorphous to low crystalline saturated polyester resin having a glass transition temperature of 40° C. or higher is a saturated polyester resin made of a copolymer containing an isophthalic acid component. container. 4. Claim 2, wherein the amorphous to low crystalline saturated polyester resin with a glass transition temperature of 40°C or higher is a saturated polyester resin made of a copolymer containing a 1,4-cyclohexanedimethanol component. Or a paper container for food and beverages as described in paragraph 3. 5. Claims in which the amorphous to low crystalline saturated polyester resin with a glass transition temperature of 40°C or higher is a saturated polyester resin made of a copolymer containing a trimellitic acid component and/or a trimethylolpropane component. The paper container for food and drink according to item 2, 3, or 4.