WO2010095171A1 - Ébauche de récipient en papier et procédé pour produire un récipient en papier - Google Patents

Ébauche de récipient en papier et procédé pour produire un récipient en papier Download PDF

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Publication number
WO2010095171A1
WO2010095171A1 PCT/JP2009/000675 JP2009000675W WO2010095171A1 WO 2010095171 A1 WO2010095171 A1 WO 2010095171A1 JP 2009000675 W JP2009000675 W JP 2009000675W WO 2010095171 A1 WO2010095171 A1 WO 2010095171A1
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WO
WIPO (PCT)
Prior art keywords
blank
container
paper
thermoplastic resin
base paper
Prior art date
Application number
PCT/JP2009/000675
Other languages
English (en)
Japanese (ja)
Inventor
松村泰治
松崎学
Original Assignee
日清食品ホールディングス株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日清食品ホールディングス株式会社 filed Critical 日清食品ホールディングス株式会社
Priority to PCT/JP2009/000675 priority Critical patent/WO2010095171A1/fr
Publication of WO2010095171A1 publication Critical patent/WO2010095171A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F7/00—Processes not otherwise provided for
    • B31F7/02—Breaking coatings, e.g. on paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/0003—Shaping by bending, folding, twisting, straightening, flattening or rim-rolling; Shaping by bending, folding or rim-rolling combined with joining; Apparatus therefor
    • B31F1/0045—Bending or folding combined with joining
    • B31F1/0048—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges
    • B31F1/007—Bending plates, sheets or webs at right angles to the axis of the article being formed and joining the edges for making articles with multilayered walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F7/00—Processes not otherwise provided for
    • B31F7/006—Processes not otherwise provided for edges, e.g. sheet edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
    • B31B2105/001—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs made from laminated webs, e.g. including laminating the webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2110/00—Shape of rigid or semi-rigid containers
    • B31B2110/10—Shape of rigid or semi-rigid containers having a cross section of varying size or shape, e.g. conical or pyramidal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/60—Uniting opposed surfaces or edges; Taping
    • B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/742—Coating; Impregnating; Waterproofing; Decoating

Definitions

  • the present invention in the overlapping portion (sticking portion) of the blank forming the body portion or the container body of the paper container, the end portion of the blank that is the inside of the container is covered with a thermoplastic resin coating, and the paper material is exposed. Therefore, the present invention relates to a method for manufacturing a paper container having high water resistance, oil resistance, and gas barrier properties, and a method for manufacturing a blank used in the container.
  • a paper container such as a paper cup is usually formed by laminating a synthetic resin on the surface of a paperboard, then punching out a blank, and folding or bonding one or more blanks punched out.
  • the paper layer is exposed on the cut surface, and the paper portion is exposed at the end of the blank that is inside the container at the bonding portion of the container (the portion that is overlapped and bonded). Will do.
  • oil and moisture in the container penetrate from that portion, the odor of the base paper moves into the container, and air and moisture easily enter from the outside of the container.
  • high water resistance, oil resistance, and gas barrier properties are required.
  • a container in which the paper portion is not exposed is required.
  • skive hemming is a process in which a blank laminated with a water-resistant thermoplastic resin such as polyethylene is scraped off in the vicinity of the end of the blank so that the outer surface of the container has a predetermined width from the end and is approximately half as thin. This is a method in which the paper portion is folded back so that the paper portion is not exposed on the end surface of the blank.
  • Patent Document 1 describes the following method. That is, the vicinity of the position where the body part is bonded to the inside of the cup container from the base paper is punched into a long hole in advance along the edge of the blank to be the bonding part, and the base paper with the long hole is formed. On the other hand, a synthetic resin film is laminated. Then, the blank is punched out from the laminated base paper so that the long hole portion becomes an end portion of the bonding portion of the cup body portion. According to this method, the synthetic resin film extends on the end surface of the blank, which is the inner wall of the cup container body, and the front end of the paper portion can be covered with the coating of this portion, and the paper portion is not exposed on the inner surface of the container.
  • Patent Documents 2, 3, and 4 as improved techniques and applied techniques of Patent Document 1.
  • these techniques are formed on one side of the paper surface, the synthetic resin film formed by stretching to the edge of the blank, and when the paper edge of the blank is insufficiently covered, There was a problem that the thickness of the coating was thin and the paper surface was exposed due to tearing of the coating.
  • Patent Document 5 is different from Patent Documents 1 to 4 in that a synthetic resin film is laminated after a long hole is formed on both sides of a base paper and stretched to the edge of a blank. The coating is formed from both sides of the paper layer and bonded. However, as in Patent Documents 1 to 4, when the thickness of the coating is thin, the paper surface may be exposed due to tearing of the coating or the like. In Patent Document 5, it is formed by stretching from both sides of the paper layer. When the container is formed, the synthetic resin film is heat-sealed to the inner surface of the container body, and the appearance of the heat-bonded part may be deteriorated by such a method. Japanese Patent Laid-Open No. 51-122666 JP 2004-106843 A JP 2005-132419 A JP 2005-272010 A JP-A-57-133046
  • the present invention relates to a method for producing a paper container excellent in water resistance, oil resistance, and gas barrier properties by covering the edge of a blank in a bonding portion of a paper container with a synthetic resin film, and a method for producing a blank used for the same. Is to provide.
  • to solve the problems in the above-mentioned patent documents more easily and without failure, to manufacture a paper container whose bonded portion is reliably covered with a synthetic resin coating, and the paper container It is providing the manufacturing method of the blank used for.
  • the present invention first proposes a method for manufacturing a blank for a paper container described below. That is, by overlapping one end of the blank punched out from the base paper and the other end, a method for manufacturing a paper container blank that forms a container body or a container body, a: a step of previously drilling a hole along the end of the base paper corresponding to the one end of the blank to be punched; b: a step of laminating a thermoplastic resin on both sides of a base paper having holes formed so that each surface has a thickness of 20 ⁇ m or more, and forming the thermoplastic resin film in the hole portion; c: a step of punching a blank from the base paper so that the thermoplastic resin film formed in the hole portion becomes an ear extending to the one end, A method for producing a blank for a paper container, comprising the steps a to c.
  • the edge of the blank is stretched from both front and back sides of the paper material (base paper) to form ears so as to wrap the edges of the paper, and has a thickness of 20 ⁇ m or more on one side. Therefore, the film has sufficient coverage, and a film having sufficient strength can be formed even when the thermoplastic resin film is formed in the holes formed in the base paper.
  • an extrusion method is particularly excellent in that the ear portion can be formed so as to wrap the end portion of the paper material.
  • step d may be added after the steps a to c. That is, d: a step of folding the edge portion extending to one end portion of the blank blanked out toward the outside of the container when the container body portion or the container body is formed. It is a manufacturing method.
  • thermoplastic resin ears are sandwiched between both blanks when the flange ends are overlapped and stuck together, so that the joining ends of the thermoplastic resins in the ears are The edge of the paper part is surely covered with the thermoplastic resin without being exposed in the container.
  • the sticking part (overlapping part) of the blank end when forming the container body part or the container body has an increased thickness due to folding of the ear part, the heat sealing at the time of container molding in the next process In addition, this portion is melted and the end portion can be sufficiently covered.
  • the finish of the container inner surface of the overlapping portion is also beautiful.
  • this invention can also perform the process with respect to one edge part of the blank in said each invention with the both ends (one edge part and the other edge part) of the blank which piles up and adheres.
  • the manufacturing method of the blank in that case is A: A step of previously drilling holes along both ends of the blank corresponding to the one end and the other end of the blank to be punched, B: a step of laminating a thermoplastic resin on both surfaces of a base paper having holes formed so that each surface has a thickness of 20 ⁇ m or more, and forming the thermoplastic resin film in the hole portion; C: a step of punching a blank from the base paper so that the thermoplastic resin film formed in the hole portion becomes an ear extending from the one end and the other end, A method for producing a blank for a paper container including the steps A to C.
  • thermoplastic resin ears covering the edges of the paper part. Water resistance, oil resistance, and gas barrier properties from the outside of the container are also improved.
  • step B as in the case of step b, as a method for laminating the thermoplastic resin on both surfaces of the base paper, a method by extrusion is preferable.
  • step D may be further added after steps A to C for forming the ear portions of the thermoplastic resin at both ends of the blank. That is, D: Fold the ears extending to one end of the blank punched out toward the outside of the container when forming the container body or the container body, and extend to the other end of the blank Folding the ear part toward the inside of the container when forming the container body or the container body, A method for producing a blank for a paper container, further comprising:
  • both ends of the blank are formed with thermoplastic resin ears that cover the paper edge
  • the blanks are overlapped when forming the container.
  • the end of the blank located on the outside of the container is the opposite side of the ear, that is, the container. It is better to fold the ears inward. This not only cleans the outer appearance of the container, but the ears of the thermoplastic resin film are sandwiched between the inner and outer blanks, and the amount of thermoplastic resin increases and melts in this part, so the edge of the paper part This is because the edge can be sufficiently covered.
  • this invention is a manufacturing method of the paper container using the blank manufactured by said each manufacturing method, Comprising: One edge part of the said blank is inside a container, Said one edge part And a process for producing a paper container, including a step of heat-sealing the other end.
  • the paper container thus manufactured is a paper container excellent in water resistance, oil resistance, and gas barrier property because the edge of the paper is not exposed in the blank overlapping part (sticking part) on the inner surface of the container. It becomes.
  • the width of the ear extending to the end of the blank is 1 to 3 mm
  • one end of the blank may be the inside of the container, and the one end and the other end may be overlapped and heat sealed.
  • the blank manufacturing method of the present invention at the time of forming the container body or the container body of the paper container, at least one end of the end of the blank to be overlapped and adhered (the container when overlapped) Since the edge of the paper part of the blank inside) can be reliably and sufficiently covered with a thermoplastic resin film, a paper container having excellent water resistance, oil resistance, and gas barrier properties is manufactured. Can do. In addition, because the paper cut is not exposed, when used as a food container, the paper portion does not touch the food directly, and there is no shift to paper such as paper odor components. You can do better. Furthermore, compared with the conventional skive hemming process, it is not necessary to scrape the blank edge to half the thickness, and the process is not troublesome and cost merit is high.
  • FIG. 3 is an enlarged cross-sectional view (schematic diagram) of the periphery of a hole when a strip-shaped hole is formed in the base paper and a thermoplastic resin is laminated on both the front and back surfaces of the base paper. It is a plane whole view at the time of punching a blank from the base paper which laminated
  • FIG. 1 shows a state in which a hole is punched out in the vicinity of a paper base paper 1 along a portion corresponding to one end of a blank.
  • the hole 2 punched out in a strip shape is a part of one end of the blank that becomes the body part of the cup container, and is a part that is overlapped and attached to the end (the other end) opposite to the blank at the time of cup molding. This is the end on the side that becomes the inside of the container when overlapping.
  • FIG. 1 shows a punched (planned) line 3 when a blank is punched with a broken line.
  • the base paper 1 may be a paper material having sufficient strength as a cup container, and may be one in which a synthetic resin is laminated on one side or both sides, or may be printed in advance. If the width of the strip of the strip-shaped punching portion corresponding to one end of the blank is narrow, the paper edge of the blank may not be sufficiently covered by the thermoplastic resin film formed in the subsequent steps. Therefore, it should be 2 mm or more, preferably 5 mm or more. Further, if the width is too narrow, extreme accuracy is required for positioning when blanking. If the width is set to 15 mm or more, there is a possibility that inconveniences such as tearing of the resin film may occur when the thermoplastic resin is laminated.
  • thermoplastic resin is laminated on both the front and back surfaces of the base paper 1 having a strip-shaped hole.
  • the “surface resin layer 5” is the side that becomes the outside of the container when molded into a container
  • the “back surface resin layer 4” is the side that becomes the inside of the container when molded into the container.
  • the lamination method is best by the method of extrusion (melt extrusion), but various lamination methods such as dry lamination can be adopted.
  • the method using the extrusion method is preferable because the thermoplastic resin laminated from both sides of the paper layer can be bonded to each other so as to cover the edge of the paper portion in the strip-shaped hole portion formed in the base paper. Yes, it is desirable to adopt a lamination method by extrusion on both sides.
  • the thermoplastic resin may be laminated on either the back side or the front side first, but both are laminated so as to have a thickness of 20 ⁇ m or more. If the thickness is 20 ⁇ m or less, the thermoplastic resin film formed in the strip-shaped hole portion may not be successfully formed, or the laminated thermoplastic resin film may be easily broken at the edge of the paper portion.
  • the thermoplastic resin to be laminated is a synthetic resin having thermoplasticity, and polyethylene, polypropylene, polyamide, ethylene-vinyl alcohol copolymer, polyester, etc. can be used, and it may be laminated not in a single layer but in multiple layers. good. However, it is most preferable to use a polyethylene resin as the thermoplastic resin because it can be laminated by extrusion and has excellent processability to paper.
  • thermoplastic resin layers 4 and 5 are laminated on the front and back surfaces of the base paper, only the thermoplastic resin layer is present in the perforated strip-shaped hole without the paper layer. Laminated from the front and back surfaces of the base paper, the edge of the paper is sealed with a thermoplastic resin.
  • the thickness of the thermoplastic resin formed in the strip-shaped hole thus formed is 40 ⁇ m or more, preferably 50 ⁇ m or more and 150 ⁇ m or less in total from both the front side and the back side. In this state, printing may be performed on the surface side by gravure printing or the like.
  • the blank that becomes the container body is punched with the punching line 3.
  • the paper edge of one end is sandwiched between the laminated thermoplastic resin films as shown in FIG.
  • An ear 6 made of a thermoplastic resin is formed at one end of the blank so as to be covered and further extended from the edge of the paper part.
  • the container body is then formed using this blank. That is, one end of the blank punched out as described above is positioned inside the container when the container body is molded, and is overlapped with the other end of the blank and heat sealed. Thereby, it becomes a container body part shape of an inverted truncated cone shape.
  • the edge of the blank inside the container is in a state where the edge of the paper part is covered with the ear part formed of the thermoplastic resin, the paper material is not exposed on the inner surface of the container. Water resistance, oil resistance, and gas barrier properties can be imparted to the surface.
  • the end portions of the blank are softened or melted with hot air, and the end portions are overlapped and bonded together. Etc. are possible.
  • the width of the lug extending to the blank edge is preferably about 1 to 5 mm, and more preferably about 1 to 3 mm. Within this range, the paper portion is not exposed and the finish around the sticking portion is beautiful.
  • the ear 6 of the thermoplastic resin formed at one end of the blank can be folded.
  • the appearance of the sticking part is good and the coverage of the edge of the paper part is further enhanced.
  • the ear 6 formed at one end of the blank is folded, the ear 6 is folded back toward the outer side (surface side) when molded into a container as shown in FIG. Is good.
  • FIG. 6 shows a place in which a blank having one end folded as described above is formed into a cylindrical shape, and one end and the other end of the blank are overlapped to form the body of the cup container.
  • the portion is bonded by thermocompression bonding, or the bonding portion around the end portion including the ear portion is softened or melted with hot air.
  • the ends are overlapped and pasted.
  • a container bottom blank is fitted by a conventional method, and if necessary, the periphery of the container opening is curled to the outside of the container to form a flange part, Use a paper cup-shaped container.
  • FIGS. 1 to 6 the method of forming the ear of the thermoplastic resin at one end of the blank and molding the container using this blank has been explained.
  • the end portions (one end portion and the other end portion) can also form an ear portion of thermoplastic resin.
  • FIG. 7 as shown in FIG. 7, the end portions of the blanks to be punched and the end portions corresponding to both the one end portion and the other end portion to be overlapped and stuck to each other are attached.
  • the strip-shaped holes 12 and 22 are formed in the base paper along the line.
  • the thermoplastic resin is laminated on both sides of the base paper, and the thermoplastic resin film formed in the strip-shaped holes extends to one end and the other end of the blank, respectively. What is necessary is just to punch a blank so that it may become the ear
  • the container body may be formed in the same procedure, but when folding the ear part, the blank located outside the container when overlapping and sticking is inside the container It is preferable to fold the ears in the direction opposite to the blank located at the position. That is, as shown in FIG. 8, the ear 16 of the end (one end) of the blank that is the inside of the container is folded toward the outside of the container, while the end of the blank that is the outside of the container (the other end). Part) is preferably folded back toward the inside of the container.
  • both the inner surface of the container and the outer surface of the container have a good appearance of the blank sticking portion, and the thermoplastic resin in the ear portion is sandwiched between the blanks, so that the amount of the thermoplastic resin is large. Therefore, both the bonding property between the blanks and the covering property of the edge of the paper part are improved.
  • edge part in both the edge parts of a blank the water resistance of a container, oil resistance, and gas barrier property can be improved with respect to the environment outside a container.
  • both the blank manufacturing method and the paper container manufacturing method of the present invention can be used for paper containers other than the cup shape.
  • the present invention can be applied to a box-shaped paper container or a cylindrical paper container used for beverage packs.
  • at least the end (one end) of the blank that is inside the container when overlapping are formed in the same manner as in the cup-shaped container.
  • the container manufactured by the manufacturing method of the blank of this invention and the manufacturing method of the paper container using this blank is excellent in water resistance, oil resistance, and gas barrier property, and the odor component of paper transfers to the container contents. Therefore, it can be suitably used as a food packaging container, in particular, a container for foods containing moisture and fats and oils such as beverages, instant noodles and instant soups.
  • a container for foods containing moisture and fats and oils such as beverages, instant noodles and instant soups.
  • An LDPE (melting point of 106 ° C.) is formed in a cup base paper having a basis weight of 320 g / m 2 , with a 5 mm wide and 13 cm long elongated hole, and a thickness of 70 ⁇ m on one side of the cup base paper (the outer surface of the container).
  • Low density polyethylene was laminated by extrusion
  • MDPE medium density polyethylene having a melting point of 133 ° C. was laminated on the other side (side to be inside the container) by extrusion so that the thickness became 40 ⁇ m.
  • PE polyethylene
  • a fan-shaped blank having a vertical width of 12 cm was punched so that the elongated hole portion was positioned at the end of the bonded portion of the blank.
  • the width of the ear portion of the thermoplastic resin formed by punching and extending to the end portion of the blank was about 4 mm from the edge of the paper portion.
  • the ear part formed on one end of the blank is turned to 180 ° at the base part of the ear part (as close as possible to the edge of the paper part) toward the LDPE side (surface that becomes the outer side of the container), and thermocompression-bonded. Glued.
  • the blanks with the ears folded in this way are melted with hot air so that the blank ends (one end) on the side where the ears are formed are located inside the container, They were laminated and pasted, and then molded into a cup container by bottom molding and top curl molding.
  • the shape of the cup is an inverted frustoconical shape in which the width of the overlapping portion (sticking portion) of the blank end is about 7 mm, the opening diameter is about 9 cm, the bottom diameter is about 7 cm, and the height is about 10.5 cm.

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  • Mechanical Engineering (AREA)
  • Cartons (AREA)
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Abstract

L'invention porte sur un procédé de production d'une ébauche formant le tronc ou le corps d'un récipient en papier et comprenant une partie d'extrémité recouverte d'un revêtement en résine synthétique. L'invention porte également sur un récipient en papier présentant d'excellentes propriétés de résistance à l'eau, de résistance à l'huile et de barrière vis-à-vis des gaz à l'aide de l'ébauche. Dans un procédé pour produire une ébauche formant le tronc ou le corps d'un récipient en papier par perforation d'une ébauche à partir d'un papier nu, des trous sont percés au préalable dans le papier nu en une partie correspondant à une partie d'extrémité d'une ébauche devant être perforée le long de la partie d'extrémité, une résine thermoplastique est appliquée aux côtés opposés du papier nu percé) de telle sorte que chaque côté a une épaisseur de 20 µm ou plus, après quoi une ébauche est perforée à partir du papier nu, de telle sorte qu'un film de résine thermoplastique formé au niveau de la partie du trou devient une patte s'allongeant vers une partie d'extrémité de l'ébauche.
PCT/JP2009/000675 2009-02-18 2009-02-18 Ébauche de récipient en papier et procédé pour produire un récipient en papier WO2010095171A1 (fr)

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PCT/JP2009/000675 WO2010095171A1 (fr) 2009-02-18 2009-02-18 Ébauche de récipient en papier et procédé pour produire un récipient en papier

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PCT/JP2009/000675 WO2010095171A1 (fr) 2009-02-18 2009-02-18 Ébauche de récipient en papier et procédé pour produire un récipient en papier

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109591365A (zh) * 2019-01-02 2019-04-09 重庆嘉海纸制品有限公司 一种纸杯筒纸片剪切板
WO2020036513A1 (fr) * 2018-08-15 2020-02-20 Дмитрий Викторович САВЕЛЬЕВ Procédé de production de couche de protection allongée d'un matériau de coffrage d'ébauche
WO2021261032A1 (fr) * 2020-06-23 2021-12-30 日本製紙株式会社 Récipient en papier pour aliment instantané contenant de l'huile aux épices

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Publication number Priority date Publication date Assignee Title
JPS57133046A (en) * 1981-02-12 1982-08-17 Nihon Dixie Co Ltd Manufacture of cup for eating and drinking product
JPS5993631A (ja) * 1982-11-13 1984-05-30 本州製紙株式会社 紙製液体容器用包材
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JP2022002978A (ja) * 2020-06-23 2022-01-11 日本製紙株式会社 油香辛料含有即席食品用紙製容器

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