JP2626756C - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention has an excellent property in containing a variety of liquid foods and drinks, tea leaves, spices, and the like, and is excellent in the scent retention performance of a filling material. It concerns paper containers. [Prior Art] A conventional paper container is composed of a paper container laminated material in which a polyolefin resin layer is laminated above and below an intermediate layer composed of a paper layer. It is formed into various types of paper containers by utilizing the thermal bonding performance of the polyolefin resin layer. [Problems to be Solved by the Invention] A conventional paper container formed by a paper container laminate in which a polyolefin-based resin layer is laminated above and below an intermediate layer composed of the above-described paper layer is formed by using this paper container laminate. In the step of forming a polyolefin resin layer during production and the step of forming a container with the laminated material for paper containers, the upper and lower polyolefin resins in the laminated material for paper containers are thermally decomposed to remove aliphatic hydrocarbons and the like. Generates volatile components. For this reason, this volatile component moves to the filling contained in the paper container, and this causes the filling to have a taste and an unpleasant odor. A conventional paper container formed by a paper container laminate in which a polyolefin-based resin layer is laminated above and below the intermediate layer made of the paper layer is a polyolefin-based material that forms the inner peripheral surface layer of the paper container. The resin layer easily absorbs and permeates the fragrance component in the filling, which also tends to change the flavor of the filling and impair the quality. On the other hand, the present invention solves the above-mentioned drawbacks of the conventional paper container, and does not cause any change in the flavor or odor of the filling caused by the polyolefin-based resin layer. This is a paper container that does not absorb or permeate the fragrance, thereby retaining the fragrance component contained in the filling material and having a good fragrance retention performance. Provided is a paper container which can be easily formed by thermocompression molding. [Means for Solving the Problems] The paper container of the present invention having an incense-retaining property of the filling material comprises a linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or more, and one surface layer comprising a linear saturated polyester resin layer. And the other surface layer comprising a linear saturated polyester resin layer having a glass transition temperature of less than 40 ° C., the one surface layer in the paper container laminate is A paper container having a container body formed so as to be on the container inner peripheral side, wherein all of the container inner peripheral surface layers of the paper container are formed of a linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher. It becomes. In the paper container having the fragrance preserving performance of the filling according to the present invention having the above structure, the glass transition temperature of the paper container laminated material, which is a molding material of the container body of the paper container, is 4 ° C.
The other surface layer composed of the linear saturated polyester resin layer having a temperature of less than 0 ° C. may be one containing a lubricant in the resin layer. The laminated material for a paper container, which is a molding material of the container body of the paper container, has one surface layer composed of a linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or more and a linear layer having a glass transition temperature of less than 40 ° C. The other surface layer composed of a saturated polyester resin layer and the intermediate layer composed of a paper layer located between the one surface layer and the other surface layer are required to be an essential laminated member. It goes without saying that, for example, a metal layer or the like may be laminated between the layer and the other surface layer in addition to the intermediate layer made of the paper layer. The paper container of the present invention having a perfume-retaining property of the filling material is such that the container body of the paper container is formed of a molded product of the laminated material for the paper container. For example, the container body is manufactured separately from the cylindrical container body. Or a paper container in which the entirety of a paper container is formed from a series of laminated materials for paper containers, such as a brick-type paper container or a gobel-top type paper container. The entire inner peripheral layer of the paper container is made of a linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher. Therefore, in a paper container formed by molding the entire paper container with a series of paper container laminate materials, one surface layer of the paper container laminate material is located on the inner peripheral surface side of the container, so that the paper container All of the peripheral layer is naturally a linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher. However, in a paper container in which a lid material or a bottom material is separately attached to the body of the container, these lid materials are used. It is necessary to use a member in which a linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher is located on the inner peripheral surface side of the container as the bottom material. In the paper container of the present invention having a perfume-retaining property of the filling, the linear saturated polyester resin forming the inner peripheral surface layer of the container has excellent preservation in an atmosphere at a temperature lower than its glass transition temperature. It has an incense performance, and the content in the paper container is usually 40
From the current state of being placed at a temperature lower than 0 ° C., in the paper container of the present invention, an excellent scent-retaining performance of the filling is exhibited by the linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or more which forms the inner peripheral surface layer of the container. You. The one surface layer in the paper container laminate is made of a linearly saturated polyester resin having as low a crystallinity as possible, because the adhesive strength of the heat bonding portion formed on the paper container can be made excellent. Preferably, there is. The linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or more, which constitutes the one surface layer in the laminated material for a paper container, is made of, for example, ethylene glycol, propylene glycol, 1,4-butanediol, 1,4-cyclohexanedimethanol. Alcohol components such as adipic acid and sebacic acid, and dicarboxylic acid components formed by aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, and diphenylcarboxylic acid, specifically, ethylene glycol and terephthalic acid; It can be formed by a co-condensation polymer such as ethylene glycol, isophthalic acid and terephthalic acid, 1,4-cyclohexanedimethanol, isophthalic acid and terephthalic acid, and propylene glycol, isophthalic acid and terephthalic acid.
A linear saturated polyester resin layer made of a co-condensate in which the aliphatic dicarboxylic acid component in the acid component is 10% by weight or more is not preferable because the fragrance retention performance tends to decrease. In addition, the glass transition temperature of the other surface layer of the laminated material for paper containers 4
The linear saturated polyester resin layer at a temperature lower than 0 ° C. is formed by cocondensation of glycols such as ethylene glycol, propylene glycol, butylene glycol, pentene glycol, cyclohexane dimethanol and dicarboxylic acids such as terephthalic acid, isophthalic acid and adipic acid. Can be formed by objects. The linear saturated polyester resin layer having a glass transition temperature of less than 40 ° C. that forms the other surface layer has a glass transition temperature of 40 that forms the one surface layer in the paper container laminate.
Of course, it has good thermal adhesiveness to the linear saturated polyester resin layer above ℃, but thermal adhesiveness to the paper layer located between one surface layer and the other surface layer. It also has good thermal adhesion to metals and the like that are laminated as desired between one surface layer and the other surface layer. The linear saturated polyester resin layer having a glass transition temperature of less than 40 ° C., which forms the other surface layer, has a small amount of lubricant added within a range where the heat bonding ability, which is a characteristic of the resin layer, is not reduced. In this case, the effect of improving the slip property of the linear saturated polyester resin layer having a glass transition temperature of less than 40 ° C., which constitutes the other surface layer, is remarkable. Easy to do. As the paper layer located between one surface layer and the other surface layer, a high-size waterproof paper used for a paper cup, a liquid paper container, or the like is preferable. In particular, by using paper having a basis weight of 100 to 400 g / m ² , a paper container laminated material from which a paper container having a good texture can be obtained. An intermediate layer composed of a paper layer or a laminated member of the paper layer and any other member, and the other surface layer composed of a linear saturated polyester resin layer having a glass transition temperature of less than 40 ° C. Lamination can be performed with the thermal adhesiveness of the linear saturated polyester resin layer having a glass transition temperature of less than 40 ° C. On the other hand, between the intermediate layer and one of the surface layers, that is, the linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher, for example, polyethylene, ethylene-α-olefin copolymer, polypropylene, polybutene, polyisobutylene And polydiolefins such as polybutadiene and polyisoprene or copolymers thereof, and ethylene, for example, carboxylic acid, carponic acid salt, carboxylic anhydride, carboxylic ester, carboxylic amide, carboxylic acid A carbonyl group (= CO) based on imide, aldehyde, ketone, etc. may be used alone or a cyano group (-CN
), Hydroxy group, ether group, oxirane A heat-adhesive polyolefin-based resin comprising a copolymer with one or more kinds of
The lamination can be performed using the above-mentioned linear saturated polyester resin having a glass transition temperature of less than 40 ° C. or an isocyanate-based adhesive. Specific examples of the ethylenically unsaturated monomer in the above-mentioned heat-adhesive polyolefin-based resin include: Ethylenically unsaturated carboxylic acids: acrylic acid, methacrylic acid, maleic acid, fumaric acid, crotonic acid, itaconic acid, citraconic acid, 5-norbornene-2,3-dicarboxylic acid, etc. Ethylenically unsaturated carboxylic anhydrides: maleic anhydride, citraconic anhydride, 5-norbornene-2,3-dicarboxylic anhydride, tetrahydrophthalic anhydride, etc. Ethylenically unsaturated esters: ethyl acrylate, methyl methacrylate, 2-ethylhexyl acrylate, monoethyl maleate, diethyl maleate, vinyl acetate, vinyl propionate, propyl γ-hydroxymethacrylate, ethyl β-hydroxyacrylate,
G. glycidyl acrylate, glycidyl methacrylate, β-N-ethylaminoethyl acrylate, etc. E. ethylenically unsaturated amide and ethylenically unsaturated imide: acrylamide, methacrylamide, maleimide, etc. Ethylenically unsaturated aldehyde and ethylenically unsaturated ketone: Acrolein, methacrolein, vinyl methyl ketone, vinyl butyl ketone and the like. Among these ethylenically unsaturated monomers, ethylenically unsaturated carboxylic anhydrides and ethylenically unsaturated carboxylic anhydrides are particularly preferred. Further, when an intermediate layer composed of a laminated member of a paper layer and a metal is used, the paper layer and the metal may be, for example, polyethylene, ethylene-acrylic acid copolymer, ionomer, ethylene-vinyl acetate copolymer, or the like. Can be laminated by an adhesive. [Example] Hereinafter, a specific configuration of a paper container having a perfume-retaining property of the filling material of the present invention will be described based on an example. Example 1 Production of Laminated Material for Paper Container FIG. 1 is a cross-sectional view showing a laminated structure of a laminated material 50 for a paper container. The laminated material 50 for a paper container was prepared by adding a 20 μm thick linear saturated polyester resin “ Eastman Kodak Company, PET G 6763: glass transition temperature 81 ° C., one surface layer 12 composed of a layer, and a 20 μm thick linear saturated polyester resin “Toyobo Co., Ltd., Byron GM-900: glass transition” Temperature—20 ° C. ”, the other surface layer 13, an intermediate layer indicated by reference numeral 14, that is, an Al foil 15 having a thickness of 7 μm and a basis weight of 200 g
/ M ² acid-resistant paper 16 and an intermediate layer 14 made of a laminated member obtained by laminating using an adhesive layer 17 made of a 15 μm thick ionomer resin “Himilan 1652, manufactured by Du Pont-Mitsui Polychemicals Co., Ltd.” I got it. In addition, the one surface layer 12 and the surface of the Al foil 15 of the intermediate layer 14 are bonded by a linear saturated polyester resin having a thickness of 20 μm, “Byron GM-900, manufactured by Toyobo Co., Ltd .: glass transition temperature −20 ° C.”. Adhesive layer 18 and the other surface layer 13
The surface of the acid-resistant paper 16 in the intermediate layer 14 was bonded by the thermal bonding ability of the linear saturated polyester resin forming the other surface layer 13. Preparation of Paper Container After the above-mentioned paper container laminate material 50 is cut into a rectangular shape, it is folded from one surface layer 12 side of the laminate material into a shape indicated by a symbol m in FIG. Is formed, and then along the pressing lines m1 and m2 of the pressing lines,
The laminated material 50 was folded so that the one surface layer 12 side became the inner peripheral surface to form a bag-shaped precursor. Next, at the overlapping portion of one side 19 and the other side 20 of the laminated material 50 forming the bag-shaped precursor, one surface layer 12 and the other surface layer 13 of the laminated material 50 are heat-welded, At the same time, one of the surface layers 12 of the laminated material 50 (that is, the inner peripheral surface layers of the bag-shaped precursor) is thermally welded and adhered to each other at the peripheral portion indicated by reference numeral 21, thereby forming one of the laminated materials 50. Was molded into an envelope-shaped container having the surface layer side facing the inner peripheral surface side. Thereafter, the envelope-shaped container is filled with 200 ml of orange juice, and then one of the surface layers 12 of the laminated material 50 (i.e., the bag-shaped material) in the periphery 22 of the opening constituting the envelope-shaped container. The inner peripheral surface layers of the precursor were heat-sealed and bonded to form a sealed package. Subsequently, the hermetically sealed package is bent along a pressing line m for folding applied to the laminated material 50 constituting the hermetically sealed package, thereby forming the laminated material 50 shown in FIG. , A portion denoted by reference symbol L is displayed on the front wall portion, a portion denoted by reference symbol M is also displayed on the rear wall portion, portions denoted by reference symbols N and N are also displayed on respective side wall portions, and similarly denoted by reference symbol X. The portion to be formed was formed into an upper bottom wall portion, and the portion also denoted by reference symbol Y was formed into a lower bottom wall portion. Next, the edge 21 and the other edge 22 of the laminated material 50 shown in FIG. 2 are bent in one direction, and the portions protruding from both side walls are formed, the upper one is on the side wall surface, and the lower one is on the lower side. Is bent to the lower bottom wall surface, and the laminated material 50 is bent.
In FIG. 3, the other surface layers (that is, the outer peripheral surface layers of the container) are heat-welded and bonded to each other to form a shape indicated by reference numeral 23 in FIG. 3 with a height of 8.5 cm and a width of 6 cm. And a brick-type paper container having a depth of 4 cm. Example 2 Preparation of Laminated Material for Paper Container In the laminated structure of the laminated material for paper container 50 described in Example 1, the other surface layer 13 was formed so as to contain a lubricant containing 1% by weight of silicon oxide fine powder. 20 μm linear saturated polyester resin “Toyobo Co., Ltd., Byron GM-900: glass transition temperature −20 ° C.” layer, and the other layers are the same as the laminated structure of the paper container laminate 50 of Example 1. A laminated material for a paper container having a laminated structure was obtained. Preparation of Paper Container A paper container filled with orange juice was obtained according to the method of preparing a paper container described in Example 1. Comparative Example 1 Production of paper container laminate material On the other surface layer 13 of the paper container laminate material 50 described in Example 1, a linear saturated polyester resin having a glass transition temperature of 81 ° C. was added. Made,
A 30 μm thick polyester resin layer was formed by “PET G 6763” to obtain a laminated material for a paper container for comparison. Preparation of Paper Container According to the method of preparing a paper container described in Example 1, a paper container for comparison filled with orange juice was obtained. Comparative Example 2 Preparation of Laminate for Paper Container Low-density polyethylene resin "Mirason 16SP" manufactured by Mitsui Petrochemical Industries, Ltd.
One surface layer having a thickness of 40 μm, an Al foil having a thickness of 7 μm, and a basis weight of 200 g / m.
⁽²⁾ An acid-resistant paper and a 15 μm thick ionomer resin “Himilan 1652 manufactured by Mitsui DuPont Polychemicals Co., Ltd.” using an adhesive layer to form an intermediate layer composed of a laminated member, and a low-density polyethylene resin “Mitsui Oil Mirason manufactured by Chemical Industry Co., Ltd.
16SP "and the other surface layer having a thickness of 20 μm to obtain a laminated material for a paper container for comparison. The one surface layer and the Al foil surface of the intermediate layer are adhered to each other by the heat welding and bonding ability of the one surface layer, and the acid-resistant paper surface of the intermediate layer and the other surface layer are bonded to the other surface. The layers were bonded by heat welding and bonding ability. Preparation of Paper Container According to the method of preparing a paper container described in Example 1, a paper container for comparison filled with orange juice was obtained. [Experiment] A brick-shaped paper container filled with each orange juice of Examples 1 and 2 and Comparative Examples 1 and 2 was stored in a 20 ° C atmosphere for 7 days, and then opened. A sensory test was performed on the flavor of the orange juice as the filling. The results of this sensory test are shown in Table 1 together with the ease of forming each of the above paper containers and the feeling of each paper container. In Table 2, ◎: very good, ：: good, × poor. Example 3 Production of Laminated Material for Paper Container FIG. 4 is a cross-sectional view showing a laminated structure of the laminated material for paper container 23. The laminated material for paper container 23 was prepared by using a linear saturated polyester resin having a thickness of 40 μm. Eastman Kodak Co., Ltd., PET G 6763: glass transition temperature of 81 ° C. ”and one surface layer 24 composed of a layer and a 20 μm thick linear saturated polyester resin“ Toyobo Co., Ltd.
Manufactured by Byron GM-900: glass transition temperature -20 ° C.), an intermediate layer indicated by reference numeral 26, ie, an Al foil 27 having a thickness of 7 μm, and an acid-resistant paper having a basis weight of 400 g / m ² . 28 were obtained by laminating an intermediate layer 26 composed of a laminated member laminated using an adhesive layer 29 made of a 15 μm thick ionomer resin “Himilan 1652, manufactured by Du Pont-Mitsui Polychemicals Co., Ltd.”. In addition, the one surface layer 24 and the Al foil 27 surface of the intermediate layer 26 are adhered by a layer of a 20 μm thick linear saturated polyester resin “Toyobo Co., Ltd., Byron GM-900: glass transition temperature −20 ° C.”. Adhesive layer 30 and the other surface layer 25
The surface of the acid-resistant paper 28 in the intermediate layer 26 was bonded by the thermal bonding ability of the linear saturated polyester resin forming the other surface layer 25. Preparation of Paper Container After the above-mentioned paper container laminate 23 is cut into a rectangular shape, the sheet material is bent from one surface layer 24 side of the laminate material 23 to a shape indicated by a symbol n in FIG. Then, one side 31 of the laminated material 23 is bent toward the other surface layer 25 along the pressing line n1 to heat the other surface layers 25 of the laminated material 23 together. An end surface treatment for welding and bonding was performed. Next, the laminated material 23 is separated from the laminated material 23 along the pressing lines n2 and n3.
Was folded so that one of the surface layers 24 side became the inner peripheral surface to form a bag-like precursor. Further, one surface layer 24 and the other surface layer 25 of the laminated material 23 are heat-welded and bonded at an overlapping portion of one side 32 and the other side 33 of the laminated material 23 forming the bag-shaped precursor. After that, using the pressing lines n1, n2, n3, n4, and n5, a rectangular cylinder having a sectional shape shown in FIG. 6 was formed. In FIG. 6, the portion indicated by reference numeral 34 is the paper container laminate 2 described above.
3 is an overlapping portion of one side 32 and the other side 33, and the above-mentioned rectangular cylinder was formed such that one surface layer 24 of the laminated material 23 was on the inner peripheral surface side. Next, the bending along the pressing lines n6, n7, n8, and n9 is performed in the opposite direction to the bending along the pressing lines n1, n2, n3, n4, and n5, and the portion 35 and the portion 36 are respectively formed inside. After folding in, the box 37 is made into a box in which the portion 37 is the outermost surface of the bottom portion, and the overlap portion is heat-welded and bonded at the overlap portion. A bottom 38 was formed by heat-welding and bonding the other surface layers 25 together. Thereafter, 1000 ml of orange juice is filled into the rectangular cylindrical container having the bottom portion 38, and the pressing lines n11, n12, n13, and n14 are bent along the pressing lines n1, n2, n3, and n4. , N5 and the bending along the pressing line n15, and the portion 39 and the portion 40 are bent.
And were folded inward, respectively. Further, a head is formed with the portion 41 and the portion 42 as inclined tops, and heat welding and bonding are performed at the overlapping portion, and the overlapping portion is formed between the one surface layers 24 of the paper container laminate 23 and the other surface. By forming a container top 43 formed by heat-welding and bonding the layers 25 together, a Goebel top type rectangular parallelepiped shape having a width of 7 cm, a depth of 7 cm, and a height of 20 cm having a shape indicated by reference numeral 44 in FIG. Was obtained. Example 4 Production of Laminated Material for Paper Container In the laminated structure of the laminated material for paper container 23 described in Example 3, the other surface layer 25 was formed so as to contain a lubricant containing 1% by weight of silicon oxide fine powder. 20 μm linear saturated polyester resin “Toyobo Co., Ltd., Byron GM-900: glass transition temperature −20 ° C.” layer, other than that, the same lamination structure as the lamination material 23 for the paper container of Example 3. A laminated material for a paper container having a laminated structure was obtained. Preparation of Paper Container A paper container filled with orange juice was obtained according to the method of preparing a paper container described in Example 3. Comparative Example 3 Preparation of Laminated Material for Paper Container On the other surface layer 25 of the laminated material for paper container 23 described in Example 3, a linear saturated polyester resin having a glass transition temperature of 81 ° C. “Eastman Kodak Company” , PET G 6763 "to form a polyester resin layer having a thickness of 20 μm to obtain a laminated material for a paper container for comparison. Preparation of Paper Container According to the method of preparing a paper container described in Example 3, a paper container for comparison filled with orange juice was obtained. Comparative Example 4 Production of laminated material for paper container Low-density polyethylene resin “Mirerson 16SP, manufactured by Mitsui Petrochemical Industries, Ltd.”
60 μm thick surface layer, a 7 μm thick Al foil and a basis weight of 400 g / m.
⁽²⁾ An acid-resistant paper and a 15 μm thick ionomer resin “Himilan 1652 manufactured by Mitsui DuPont Polychemicals Co., Ltd.” using an adhesive layer to form an intermediate layer composed of a laminated member, and a low-density polyethylene resin “Mitsui Oil Mirason manufactured by Chemical Industry Co., Ltd.
16SP "and the other surface layer having a thickness of 20 μm to obtain a laminated material for a paper container for comparison. The one surface layer and the Al foil surface of the intermediate layer are adhered to each other by the heat welding and bonding ability of the one surface layer, and the acid-resistant paper surface of the intermediate layer and the other surface layer are bonded to each other. Were adhered by the heat welding and adhesive ability of the surface layer. Preparation of Paper Container According to the method of preparing a paper container described in Example 3, a paper container for comparison filled with orange juice was obtained. [Experiment] After storing the Gebel top type rectangular parallelepiped paper container filled with each orange juice of Example 3 to Example 4 and Comparative example 3 to Comparative example 4 in an atmosphere of 20 ° C. for 7 days, Was opened, and a sensory test of the flavor of the orange juice as the filling was conducted. The results of this sensory test are shown in Table 2 together with the ease of forming each of the above-mentioned paper containers and the feeling of each paper container. In Table 2, ◎: very good, ：: good, × poor. [Operation and Effect of the Invention] The paper container of the present invention has one surface layer composed of a linear saturated polyester resin layer having a glass transition temperature of 40 ° C or higher, an intermediate layer composed of a paper layer, and a glass transition temperature of less than 40 ° C. The paper container laminate having the other surface layer composed of the linear saturated polyester resin layer is formed by molding such that the one surface layer in the paper container laminate is on the inner peripheral surface side of the container. A paper container having a container body comprising: a container having a glass transition temperature of 40 ° C. or higher; In the paper container of the present invention having the above configuration, since all of the inner peripheral surface layers of the paper container are linear saturated polyester resin layers having a glass transition temperature of 40 ° C. or higher, the linear saturated polyester resin has a glass transition temperature lower than the glass transition temperature. It is possible to take advantage of the property that the filling material has excellent retention characteristics of the aroma component in the temperature atmosphere, thereby preventing the filling material from being changed in taste or odor, The inner peripheral layer does not easily adsorb and permeate the fragrance component, and has excellent quality retention characteristics without impairing the flavor of the filling. Further, in the paper container of the present invention, the container body of the paper container has one surface layer composed of a linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or more, an intermediate layer composed of a paper layer, and a glass transition temperature of 40 ° C. A laminated material for a paper container, comprising a linear saturated polyester resin layer having a temperature of less than 0 ° C. and the other surface layer. The laminated material for a paper container has a linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher as one surface layer, and the other surface layer has a glass transition temperature of 4 ° C.
Since the linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher, a negative factor for three-dimensional molding easiness caused by the linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher is minimized, and The body of the container can be formed by utilizing the heat-sealing and adhesive properties of the linear saturated polyester resin layer having a glass transition temperature of less than 40 ° C. which forms the other surface layer. Accordingly, the glass transition temperature of the other surface layer of the above-mentioned laminated material for paper containers 4
Utilizing the heat welding and bonding ability of the linear saturated polyester resin layer below 0 ° C,
The container body of the paper container of the present invention can be easily formed by the same simple thermocompression molding as the conventional paper container.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a model showing an example of a laminated material for a paper container used for forming a container body of a paper container of the present invention, and FIG. FIG. 3 is a plan view of the paper container laminate at this time, FIG. 3 is a perspective view showing the brick type paper container formed by the paper container laminate of FIG. 2 in a rolled state, and FIG. 4 is a paper container of the present invention. FIG. 5 is a cross-sectional view of a model showing another example of a laminated material for a paper container used for molding a container body of the present invention. FIG. 5 is a plan view of the laminated material for a paper container when molding a gobel top type paper container. FIG. 5 is a cross-sectional view of a torso portion of a gabelle top type paper container formed of the paper container laminate of FIG. 5, and FIG. 7 is a perspective view of a göbel top type paper container formed of the paper container laminate of FIG. 50: laminated material for paper container 12: linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher which forms one surface layer of laminated material for paper container 50 13: the other surface layer of laminated material 50 for paper container Eggplant linear saturated polyester resin layer with glass transition temperature of less than 4 ° C 16: Acid-resistant paper

Claims (1)

Claims (1) One surface layer composed of a linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher, an intermediate layer composed of a paper layer, and a linear saturated polyester resin having a glass transition temperature of less than 40 ° C. A container body formed by laminating the paper container having the other surface layer composed of a layer so that the one surface layer in the paper container laminate is on the inner peripheral surface side of the container. A paper container having a perfume-retaining property of a filling, characterized in that the container inner peripheral layer of the paper container is entirely composed of a linear saturated polyester resin layer having a glass transition temperature of 40 ° C. or higher. . (2) The lubricant according to claim 1, wherein a lubricant is added to the other surface layer of the linear saturated polyester resin layer having a glass transition temperature of less than 40 ° C in the laminated material for a paper container. A paper container that has a perfume-retaining performance for the filling.