JP2787676B2 - Food and beverage paper containers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

The present invention relates to a paper container in which food or drink is enclosed.

[Prior art]

A paper container in which various beverages and foods are enclosed has a sealing portion formed by heat welding ability of a packaging material for a paper container forming a container body or a packaging material for a lid forming a lid, A packaging material for a paper container and a packaging material for a lid provided with a resin layer for heat sealing made of a polyolefin-based resin are used so that the heat welding ability of the polyolefin-based resin can be used.

[Problems to be solved by the invention]

However, the paper container obtained by the packaging material for the paper container and the packaging material for the lid body having the resin layer for heat sealing by the polyolefin resin has an inner peripheral surface layer formed by the resin layer for heat sealing by the polyolefin resin. The polyolefin resin undergoes thermal decomposition during the formation of a polyolefin resin layer when obtaining a laminated sheet to be used as a packaging material, or in the step of sealing a paper container with the laminated sheet. Since volatile components such as aromatic hydrocarbons are generated, they are transferred to the filling in the paper container, and the filling has a drawback that the filling tastes and has an unpleasant odor. Further, the container in which the inner peripheral surface layer is formed of a heat-sealing resin layer of a polyolefin-based resin is preferably a fragrance component in an inner filling in which the heat-sealing resin layer of a polyolefin-based resin is contained in the container. Is easy to adsorb,
At the same time, it is easily permeated, so that the preservation performance for the filling containing the flavor component is not sufficient. On the other hand, the present invention provides a food and drink paper container comprising a so-called composite container which has excellent properties for maintaining aroma with respect to an infill and has excellent heat bonding strength at a seal portion.

[Means for Solving the Problems]

In the food and beverage paper container according to the first aspect of the invention, the end surfaces of the left and right sides of the substantially rectangular laminated sheet for paper container are brought into contact with each other, and the inner peripheral surface of the obtained contact portion is provided with the first peripheral surface. A cylindrical container body formed by attaching a sealing tape and attaching a second sealing tape to the outer peripheral surface, and upper and lower both sides of the container body A lid that seals the open mouth, wherein the lid has a concave portion inscribed in the open mouth of the container body, and a peripheral portion that protrudes outward from the concave portion in a flange shape. A lid molded body made of the following is brought into contact with the upper and lower open mouths of the container body, the back surface of the lid molded body, the inner peripheral surface of the trunk near the open mouth of the container body, and the body end. The edge and the outer peripheral surface of the body are hot-press bonded to form and adhere to the body of the container. And in the food and beverage paper container of the first invention,
The container body is amorphous, having a glass transition temperature of 40 ° C. or higher.
By a laminated sheet for a paper container having an inner surface layer composed of a low-crystalline saturated polyester resin layer, the inner surface layer in the laminated sheet for a paper container is formed so as to be a container inner peripheral layer, In addition, the lid molded article has a glass transition temperature of 40 ° C. or higher, and a lid laminated sheet having an inner surface layer of an amorphous to low crystalline saturated polyester resin layer. It is formed so that the surface layer becomes the inner peripheral surface layer of the container, that is, the back surface layer of the lid molded body. Furthermore, the left side of the above-mentioned substantially rectangular laminated sheet for a paper container,
The end surfaces at the right side end portions are abutted with each other, and the first sealing tape adhered to the inner peripheral surface at the obtained abutment portion is a core layer made of a biaxially stretched thermoplastic synthetic resin film. The glass transition temperature laminated on the front and back of the core layer is 40
A second sealing tape, which 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 of a core layer of a stretched thermoplastic synthetic resin film and a polyolefin-based resin layer laminated on the front and back of the core layer. The food and drink paper container of the second invention is the food and drink paper container of the first invention, wherein the amorphous to low-crystalline saturated polyester resin layer having a glass transition temperature of 40 ° C. or more is formed of ethylene glycol and ethylene glycol. It is formed of a saturated polyester resin containing terephthalic acid as a main component and a copolymer of ethylene glycol, terephthalic acid, an alcohol other than ethylene glycol, and / or a carboxylic acid other than terephthalic acid. The food and drink paper container of the third invention is the food and drink paper container of the second invention, wherein the glass transition temperature of the amorphous to low-crystalline saturated polyester resin layer having a temperature of 40 ° C. or more is an acid component. One part is formed of a saturated polyester resin containing an isophthalic acid component. The food and drink paper container according to the fourth invention is the food or drink paper container according to the second or third invention, wherein the glass transition temperature of the amorphous to low-crystalline saturated polyester resin layer is 40 ° C. or more. Is formed of a saturated polyester resin containing 1,4-cyclohexanedimethanol in a part of the alcohol component. The food and drink paper container according to the fifth invention is the food or drink paper container according to the second, third, or fourth invention, wherein the glass transition temperature is between amorphous and low crystalline. Is formed of a saturated polyester resin containing trimellitic acid in one part of the acid component, or containing trimethylolpropane in one part of the alcohol component, or further containing both of these. I have. In the food and beverage paper container of each of the present inventions having the above-mentioned constitution, the amorphous polyester resin layer having a glass transition temperature of 40 ° C. or higher and the low-crystalline saturated polyester resin layer has an amorphous-low crystallinity of 10% or less. It is formed of a crystalline saturated polyester resin and includes, for example, a dialcohol component such as ethylene glycol, propylene glycol, 1,4-cyclohexane dimethanol, an aliphatic dicarboxylic acid such as adipic acid and sebacic acid, terephthalic acid, and isophthalic acid. Polyester resin obtained by co-condensation polymerization with a dicarboxylic acid component such as an acid or an aromatic dicarboxylic acid such as diphenyldicarboxylic acid, specifically, ethylene glycol and terephthalic acid, ethylene glycol and isophthalic acid and terephthalic acid, -Cyclohexanedimethanol, ethylene glycol, terephthalic acid, propylene When polymerizing a polyester resin consisting of a co-condensed polymer of a combination of glycol, isophthalic acid, terephthalic acid, etc., or when polymerizing a polyester resin using the above-mentioned terephthalic acid and ethylene glycol as base materials, trimellitic acid is used as part of the acid component. Or a trihydric alcohol such as trimethylolpropane may be used as a part of the alcohol component.
Part and one part of the acid component are formed of a polyester resin obtained by utilizing a trivalent carboxylic acid and a trivalent alcohol. In addition, when the polyester resin is a polyester resin in which the aliphatic dicarboxylic acid component in the acid component is 10% by weight or more, a resin layer made of the resin is not preferable because its fragrance retention performance is not sufficient. Absent. In the food and beverage paper container of the present invention, the laminated sheet for a paper container formed into a cylindrical container body includes a paper container base material and a heat sealing resin layer laminated on the paper container base material. In addition, the lid laminate sheet used for the lid molded body is composed of a lid substrate and a heat sealing resin layer laminated on the lid substrate. ,
Each of these resin layers for heat sealing has a glass transition temperature.
It is formed of a single resin layer of a saturated polyester resin having an amorphous to low crystallinity of 40 ° C. or higher, or is formed of a saturated polyester resin layer of an amorphous to low crystallinity having a glass transition temperature of 40 ° C. or higher. It is formed of a laminated resin layer having a 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 having a glass transition temperature of 40 ° C. or higher and another thermoplastic synthetic resin layer. Is the inner surface layer in the laminated resin layer, i.e., an amorphous to low-crystalline saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher is the outermost surface side with respect to the paper container base material. Are stacked in this manner. That is, the entire heat-sealing resin layer or the inner surface layer in the heat-sealing resin layer in the paper container laminated sheet formed in the cylindrical container body or the lid laminated sheet formed in the lid molded body. Has a glass transition temperature of 40
It is formed of a saturated polyester resin having an amorphous to low crystallinity of not less than ℃. Specific examples of the heat-sealing resin layer composed of a laminated resin layer having a glass transition temperature of 40 ° C. or higher of an amorphous to low-crystalline saturated polyester resin layer formed as an inner surface layer include, for example, It has the following configuration. 1) Polyethylene resin layer / Amorphous to low-crystalline saturated polyester resin layer having a glass transition temperature of 40 ° C. or more 2) Adhesive polyester resin layer modified with a carboxyl group / Non-crystalline resin having a glass transition temperature of 40 ° C. or more Co-extruded laminated resin layer with a crystalline to low crystalline saturated polyester resin layer 3) Amorphous to low crystalline saturated polyester resin layer / adhesive polyester resin layer / Amorphous with glass transition temperature of 40 ° C or higher ~ Low crystalline saturated polyester resin layer 4) Amorphous ~ Low crystalline saturated polyester resin layer / 1,4-
Crystalline polybutylene terephthalate resin layer composed of a copolymer of butanediol and terephthalic acid / Amorphous to low crystalline saturated polyester resin layer having a glass transition temperature of 40 ° C. or more 5) Amorphous to Low crystallinity Saturated polyester resin layer / polycarbonate resin layer / amorphous to low crystalline saturated polyester resin layer having a glass transition temperature of 40 ° C. or more 6) Crystallinity comprising a copolymer of 1,4-butanediol and terephthalic acid Of polybutylene terephthalate resin layer /
Amorphous to low-crystalline saturated polyester resin layer having a glass transition temperature of 40 ° C or higher 7) Polycarbonate resin layer / Amorphous to low-crystalline saturated polyester resin layer having a glass transition temperature of 40 ° C or higher 8) Polyethylene resin Layer / adhesive polyethylene resin layer modified with carboxyl group / glass transition temperature 40 ℃
In the case where the above-mentioned heat-sealing resin layer is composed of a laminated resin layer, the laminated resin layer may be a co-extruded laminated resin layer, or An adhesive laminated resin layer in which an adhesive is interposed between the resin layers may be used. Further, the amorphous to low-crystalline saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher in the heat-sealing resin layer has poor stability when its thickness is less than 5 μm. When the thickness exceeds the above range, the resin layer becomes hard, and the molding characteristics of the laminated sheet for paper containers tend to deteriorate. Therefore, the thickness is usually about 5 to 60 μm. A heat-sealing resin layer comprising a single resin layer of an amorphous to low-crystalline saturated polyester resin layer having 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 And a laminated sheet for a paper container having a laminated structure with a paper container base material, wherein the paper container base material includes a metal layer such as a metal foil or a metal vapor-deposited film.
A laminated sheet made of cardboard, a polyolefin-based resin layer, or the like is used. Usually, a paper in which the outer surface layer is formed of a polyolefin-based resin layer so as to obtain water resistance and heat welding properties on the body outer surface layer. A substrate for a container is used. Further, for heat sealing comprising a single resin layer of a saturated polyester resin layer having an amorphous to low crystallinity having 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 comprising a laminated structure of a resin layer and a substrate for a lid, the substrate for the lid may be a metal layer such as a metal foil or a metal-deposited film.
A laminated sheet made of a stretched plastic film, a thermoplastic synthetic resin layer, or the like is used, and usually, the outer surface layer is formed of a polyvinyl chloride resin layer so that a cold-forming property can be obtained in the lid laminated sheet. A base material for the lid is used. The above-mentioned laminated sheet for a paper container having an inner surface layer comprising an amorphous to low-crystalline saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher, or an amorphous sheet having a glass transition temperature of 40 ° C. or higher ~ In the case of a laminated sheet for a lid having an inner surface layer composed of a low-crystalline saturated polyester resin layer, when a metal layer such as an Al foil is provided in the laminated sheet,
If an interposed film made of, for example, a stretched polyethylene terephthalate film, a stretched nylon film, a stretched polypropylene film, or the like is laminated between the metal layer and the resin layer for heat sealing, the heat sealing process in the paper container molding process can be performed. Thus, the flow of the metal layer due to the melting of the resin layer for heat sealing is prevented, and a food and drink paper container free from liquid leakage due to cracks in the metal layer can be obtained. The first used for the container body of the food and beverage paper container of the present invention
Sealing tape, that is, the left side of the laminated sheet for paper containers,
The end faces at the right side edges are abutted with each other, and the first sealing tape adhered to the inner peripheral surface at the obtained abutment portion is a core layer of a biaxially stretched thermoplastic synthetic resin film and The glass transition temperature of the front and back of the core layer is 40
° C or higher, consisting of a laminated structure with a non-crystalline to low-crystalline saturated polyester resin layer, having good adhesiveness with the body inner peripheral surface layer, and a filling material in the container. It has excellent fragrance retention properties. In addition, the second sealing tape, that is, the end surfaces at both left and right end portions of the laminated sheet for a paper container are brought into contact with each other,
The second sealing tape attached to the outer peripheral surface at the obtained contact portion is a core layer made of a biaxially stretched thermoplastic synthetic resin film, and a polyolefin laminated on the front and back of the core layer. It is made of a laminated tape with a base resin layer,
It has good adhesion and toughness to the outer peripheral surface of the container body.

[Action]

The food and beverage paper container of each of the first to fifth inventions having the above-described structure has a glass transition temperature of 40 ° C. or higher for the entire inner peripheral surface layer of the paper container, that is, the entire surface in contact with the filling. Wherein the resin layer constituting the inner peripheral surface layer has a glass transition temperature of a saturated polyester resin constituting the resin layer. The present invention provides excellent perfume retention performance in an atmosphere having a temperature of less than 40 ° C. In connection with this, the ordinary food and beverage paper container is placed in an atmosphere of a temperature of less than 40 ° C. In the food and beverage paper container of the above, excellent fragrance retention performance against the filling is exhibited. In the food and beverage paper containers of the second to fifth aspects of the present invention, the excellent properties exhibited by the copolymerized portion of ethylene glycol and terephthalic acid, which are the main components of the resin layer forming the inner peripheral surface layer of the paper container, are provided. It has both fragrance retention performance and heat resistance due to a copolymerized portion of an alcohol component other than ethylene glycol and / or a carboxylic acid component other than terephthalic acid. Even after being subjected to heating or the like when performing heat filling, the resin layer serving as the inner peripheral surface layer still has excellent heat bonding performance, and the paper container formed after filling of the filling material by hot filling. A seal portion having excellent adhesive strength can be obtained also in the heat seal portion.

【Example】

Hereinafter, a specific configuration of the food and beverage paper container of the present invention will be described with reference to examples. Example 1 Laminated sheet for paper container In FIG. 2, a biaxially stretched polyethylene terephthalate resin film 2 having a thickness of 12 μ and an Al foil 3 having a thickness of 9 μ were
A dry laminate with a urethane-based adhesive, followed by a cardboard (weighing 315 g / m ² ) 5 whose surface is covered with a 15 μm-thick polyethylene resin coat layer 4, is interposed between the cardboard and the above-mentioned Al foil 3. Lamination was performed while interposing a melt-extruded resin layer 6 of a 20 μm thick polyethylene resin [random copolymer of ethylene and methacrylic acid (Nucleel 0910c: DuPont Mitsui Polychemical)]. In the step of laminating the coat layer 4 with the polyethylene resin on the cardboard 5 and the step of laminating the melt-extruded resin layer 6 of the polyethylene resin, the cardboard surface on which the synthetic resin layer is laminated is subjected to corona discharge treatment in advance. Attached. Thereafter, the glass transition temperature of the biaxially stretched polyethylene terephthalate resin film 2 having a thickness of 12 μm is applied to the two surfaces.
A film 7 having a thickness of 50 μm made of an amorphous saturated polyester resin (manufactured by Eastman Kodak Company: PETG 6763) at 81 ° C.
Dry lamination was performed with a urethane-based adhesive to obtain a laminated sheet 8 for a paper container having an inner surface layer 7 made of an amorphous saturated polyester resin layer having a glass transition temperature of 81 ° C. Laminated sheet for lid In FIG. 3, a biaxially stretched polyethylene terephthalate resin film 9 having a thickness of 12 μ and an Al foil 10 having a thickness of 30 μ were
Dry laminating with urethane adhesive, then thickness
A 200μ polyvinyl chloride resin sheet 11 was dry-laminated on the surface of the Al foil 10 described above, and thereafter, the thickness 12
A 50 μm thick film 12 made of an amorphous saturated polyester resin having a glass transition temperature of 81 ° C. (PETG 6763, manufactured by Eastman Kodak Co., Ltd.) is applied to 9 surfaces of a biaxially oriented polyethylene terephthalate resin film having a thickness of 81 ° C. and a urethane-based adhesive. To obtain a lid laminated sheet 13 having an inner surface layer 12 made of an amorphous saturated polyester resin layer having a glass transition temperature of 81 ° C. First sealing tape In FIG. 4, an amorphous saturated polyester having a glass transition temperature of 81 ° C. is provided on each of the front and back surfaces of a core layer 13 made of a biaxially oriented polyethylene terephthalate resin film having a thickness of 16 μm. Resin (manufactured by Eastman Kodak Company: PETG 676)
The films 14 and 15 having a thickness of 25 μ according to 3) were dry-laminated with a urethane-based adhesive to obtain a first sealing tape indicated by reference numeral 16. Second sealing tape In FIG. 5, 25 μm thick films 18 and 19 made of polyethylene resin were applied to both the front and back surfaces of the core layer 17 made of a 16 μm thick biaxially stretched polyethylene terephthalate resin film. And dry-laminated with a urethane-based adhesive to obtain a second sealing tape indicated by reference numeral 20. In FIG. 6, the end faces 22 and 23 of the left and right sides of the substantially rectangular blank plate 21 obtained by cutting the above-described laminated sheet 8 for paper containers are brought into contact with each other. By attaching the first sealing tape 16 to the inner peripheral surface of the obtained contact portion, and attaching the second sealing tape 20 to the outer peripheral surface,
A container body 24 having a cylindrical body having a substantially circular cross section in which the amorphous saturated polyester resin layer 7 in the blank plate 21 forms an inner peripheral surface layer was obtained. 7, a disc-shaped laminated sheet obtained by stamping and forming the above-described laminated sheet 13 for lid is subjected to cold forming, and the outer peripheral surface thereof is formed at the opening of the container body 24 described above. A lid molded body 27 comprising a concave portion 25 having an inscribed dimension and a peripheral portion 26 projecting outward from the upper edge of the concave portion 25 in a flange shape was obtained. Note that the surface of the lid molded body 27 is formed of the polyvinyl chloride resin sheet 11 in the lid laminated sheet 13. 8 and 9, the concave portion 25 of the lid molded body 27 is fitted into the upper opening of the container trunk 24, assembled and inscribed, Next, the peripheral portion 26 that protrudes outward from the upper edge of the concave portion 25 in a flange shape is formed on the upper edge of the container body 24.
28, the back surface of the lid molded body 27, the body inner peripheral surface 7, the upper edge 28, and the body outer layer 4 near the opening of the container body 24.
Then, the lid 30 forming the upper bottom of the container was formed and bonded by hot-press bonding. Further, the above-mentioned method is further repeated with respect to the lower opening portion of the container body 24, thereby forming the lid body 31 serving as the container lower bottom that is hot-pressed and bonded to the lower edge 29 of the container body 24. Then, a food and drink paper container indicated by reference numeral 1 in FIG. 1 as an example of the present invention was obtained. Example 2 An amorphous saturated polyester resin having a glass transition temperature of 81 ° C. (Eastman Kodak) in each of the laminated sheet for a paper container, the laminated sheet for a lid, and the first sealing tape used in Example 1 above. Instead of a PETG 6763 layer, a low-crystalline saturated polyester resin having a glass transition temperature of 71 ° C (total amount of ethylene glycol and terephthalic acid: 1
(87 parts by weight, isophthalic acid: 13 parts by weight, crystallinity: 3%) except that a low-crystalline saturated polyester resin layer was formed. Example 1 A food and drink paper container as an example was obtained. Example 3 An amorphous saturated polyester resin having a glass transition temperature of 81 ° C. in each of the laminated sheet for a paper container, the laminated sheet for a lid, and the first sealing tape used in Example 1 (Eastman Kodak) Instead of PETG 6763) layer, an amorphous saturated polyester resin having a glass transition temperature of 81 ° C (total amount of ethylene glycol and terephthalic acid: 16
Example 1 except that a low crystalline saturated polyester resin layer was formed by 3.5 parts by weight, 1,4-cyclohexanedimethanol: 35 parts by weight, trimellitic acid: 1.5 parts by weight).
By the same steps as those corresponding to the above, a food and drink paper container as an example product of the present invention was obtained.

【The invention's effect】

In the food and beverage paper containers of the first to fifth inventions, all of the inner peripheral 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. Is what it is. Therefore, the food and beverage paper container of the present invention has a structure in which all the layers in contact with the contents in the container are made of a resin layer of a linear saturated polyester resin having a glass transition temperature of 40 ° C. or more. Therefore, the fragrance of the filling is not absorbed by the packaging material, and the taste and scent of the filling are effectively prevented from changing. Is played. In addition, since the resin layer serving as the inner peripheral surface layer of the above-described paper container is formed of a resin layer of an amorphous to low-crystalline saturated polyester resin having a crystallinity of 10% or less,
When the food and drink paper container is formed, the excellent heat bonding performance of the amorphous to low crystallinity saturated polyester resin layer can be utilized, so that a heat seal portion having excellent heat bonding strength can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of the food and beverage paper container of the present invention, FIG. 2 is a cross-sectional view schematically showing an example of a paper container laminated sheet formed in a container body, FIG. 3 is a cross-sectional view schematically showing one example of a laminated sheet for a lid formed into a molded lid body, and FIG. 4 is a cross-sectional view of end faces at both left and right end portions of the laminated sheet for a paper container. Sectional drawing which modelly shows an example of the 1st sealing tape stuck on the inner peripheral surface in a contact part,
FIG. 5 is a second view of the second embodiment attached to the outer peripheral surface of the contact portion.
FIG. 6 is a cross-sectional view schematically showing an example of the sealing tape of FIG.
FIG. 7 is a cross-sectional view showing the state of the contact portions between the end faces of the left and right sides of the laminated sheet in the container body obtained by the laminated sheet for the paper container, and FIG. 7 is formed by the laminated sheet for the lid. FIG. 8 is an oblique view showing an example of a molded lid body,
FIG. 9 is a perspective view illustrating a process of assembling the lid molded body to the container body, and FIG. 9 is a cross-sectional view of a main part showing an assembled and bonded state of the lid molded body to the container body. 1 ... paper container for food and drink, 7 ... inner surface layer made of amorphous saturated polyester resin having a glass transition temperature of 40 ° C or higher, 8 ...
... Laminated sheet for paper container, 12 ... Inner surface layer of amorphous saturated sum polyester resin with glass transition temperature of 40 ° C or higher, 13
…… Laminated sheet for lid, 16… First sealing tape, 20
... A second sealing tape, 22... An end face at the left end of the paper container laminated sheet, 23... An end face at a right end of the paper container laminated sheet, 24. 27 ……
Lid molded body, 30 ... Upper bottom lid, 31 ... Lower bottom lid.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-308624 (JP, A) JP-A-1-2799042 (JP, A) JP-A-1-257030 (JP, A) 164121 (JP, U)

Claims (5)

(57) [Claims] 1. An end face at both left and right ends of a substantially rectangular laminated sheet for a paper container is brought into contact with each other, and a first sealing tape is adhered to an inner peripheral surface of the obtained contact part. And also
A cylindrical container body formed by adhering a second sealing tape to the outer peripheral surface;
A lid that seals both lower opening portions, wherein the lid body has a concave portion inscribed in the opening portion of the container body and a peripheral portion that protrudes outward in a flange shape outside the concave portion. The lid molded body made of is abutted on both upper and lower opening ports of the container body,
Food and drink assembled and molded by hot-press bonding the back surface of the lid molded body, the inner peripheral surface of the trunk near the opening of the container trunk, the edge of the trunk, and the outer peripheral surface of the trunk In the paper container, the container body is laminated with a paper container laminated 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 in the sheet is molded so as to be an inner peripheral layer of the container, and the lid molded body has an amorphous to low crystalline saturated polyester resin having a glass transition temperature of 40 ° C. or higher. The laminated sheet for a lid having an inner surface layer made of a layer is formed such that the inner surface layer in the laminated sheet for a lid becomes an inner peripheral surface layer of the container, and furthermore, the first sealing is performed. Tape is biaxially stretched thermoplastic synthetic resin film And a laminated tape of a non-crystalline to low-crystalline saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher and laminated on the front and back of the core layer by The second sealing tape is a biaxially stretched thermoplastic synthetic resin film having a core layer and a table of the core layer.
A food and drink paper container formed of a laminated tape with a polyolefin resin layer laminated on the back. 2. An amorphous to low-crystalline saturated polyester resin having a glass transition temperature of 40 ° C. or higher, comprising ethylene glycol and terephthalic acid as main components, and an alcohol other than ethylene glycol and / or a carboxylic acid other than terephthalic acid. 2. The food and drink paper container according to claim 1, which is a saturated polyester resin comprising a copolymer with an acid. 3. The saturated polyester resin having a glass transition temperature of 40 ° C. or higher and a non-crystalline to low-crystalline saturated polyester resin comprising a copolymer containing an isophthalic acid component. Food and beverage paper container. 4. The saturated polyester resin having a glass transition temperature of 40 ° C. or higher and having an amorphous to low crystallinity is a saturated polyester resin comprising a copolymer containing a 1,4-cyclohexanedimethanol component. Item 4. The food and beverage paper container according to item 2 or 3. 5. A patent wherein the amorphous to low-crystalline saturated polyester resin having a glass transition temperature of 40 ° C. or higher is a saturated polyester resin comprising a copolymer containing a trimellitic acid component and / or a trimethylolpropane component. Claim 2
Item 5. A food and drink paper container according to item 3, item 3 or item 4.