WO2003101839A1 - Recipient de papier etire et procede de fabrication de ce recipient - Google Patents
Recipient de papier etire et procede de fabrication de ce recipient Download PDFInfo
- Publication number
- WO2003101839A1 WO2003101839A1 PCT/JP2003/006832 JP0306832W WO03101839A1 WO 2003101839 A1 WO2003101839 A1 WO 2003101839A1 JP 0306832 W JP0306832 W JP 0306832W WO 03101839 A1 WO03101839 A1 WO 03101839A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- paper container
- paper
- thermoplastic resin
- draw
- resin layer
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 93
- 238000000034 method Methods 0.000 claims abstract description 38
- 230000037303 wrinkles Effects 0.000 claims abstract description 9
- 229920005989 resin Polymers 0.000 claims description 58
- 239000011347 resin Substances 0.000 claims description 58
- 239000000463 material Substances 0.000 claims description 36
- 238000003466 welding Methods 0.000 claims description 30
- 239000000758 substrate Substances 0.000 claims description 29
- -1 xylene isocyanate Chemical class 0.000 claims description 22
- 238000003475 lamination Methods 0.000 claims description 12
- 239000012948 isocyanate Substances 0.000 claims description 9
- 239000005038 ethylene vinyl acetate Substances 0.000 claims description 7
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 7
- 239000008096 xylene Substances 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 5
- 239000003921 oil Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229920001577 copolymer Polymers 0.000 claims description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 238000007666 vacuum forming Methods 0.000 claims description 3
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims 2
- NAAUFMFXORVZMY-UHFFFAOYSA-N C(CCC(=O)O)(=O)O.O=C1C=C(CC(C)(C)C1)C Chemical compound C(CCC(=O)O)(=O)O.O=C1C=C(CC(C)(C)C1)C NAAUFMFXORVZMY-UHFFFAOYSA-N 0.000 claims 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-L succinate(2-) Chemical compound [O-]C(=O)CCC([O-])=O KDYFGRWQOYBRFD-UHFFFAOYSA-L 0.000 claims 1
- 238000007740 vapor deposition Methods 0.000 claims 1
- 239000000123 paper Substances 0.000 description 182
- 230000000052 comparative effect Effects 0.000 description 32
- 238000000465 moulding Methods 0.000 description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000007789 sealing Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- 238000002844 melting Methods 0.000 description 9
- 230000008018 melting Effects 0.000 description 8
- 230000004888 barrier function Effects 0.000 description 7
- 229920005672 polyolefin resin Polymers 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 229920013716 polyethylene resin Polymers 0.000 description 6
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- UFRKOOWSQGXVKV-UHFFFAOYSA-N ethene;ethenol Chemical compound C=C.OC=C UFRKOOWSQGXVKV-UHFFFAOYSA-N 0.000 description 5
- 239000004715 ethylene vinyl alcohol Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 5
- 239000005020 polyethylene terephthalate Substances 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 150000002513 isocyanates Chemical class 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 230000032798 delamination Effects 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000009210 therapy by ultrasound Methods 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009820 dry lamination Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229920001684 low density polyethylene Polymers 0.000 description 2
- 239000004702 low-density polyethylene Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 229920003043 Cellulose fiber Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229920000180 alkyd Polymers 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- UHPJWJRERDJHOJ-UHFFFAOYSA-N ethene;naphthalene-1-carboxylic acid Chemical compound C=C.C1=CC=C2C(C(=O)O)=CC=CC2=C1 UHPJWJRERDJHOJ-UHFFFAOYSA-N 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 238000009928 pasteurization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920006174 synthetic rubber latex Polymers 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
- B65D1/34—Trays or like shallow containers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/24—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight
- B29C66/242—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours
- B29C66/2424—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain
- B29C66/24243—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral
- B29C66/24244—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being closed or non-straight said joint lines being closed, i.e. forming closed contours being a closed polygonal chain forming a quadrilateral forming a rectangle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/303—Particular design of joint configurations the joint involving an anchoring effect
- B29C66/3032—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined
- B29C66/30325—Particular design of joint configurations the joint involving an anchoring effect making use of protrusions or cavities belonging to at least one of the parts to be joined making use of cavities belonging to at least one of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/53—Joining single elements to tubular articles, hollow articles or bars
- B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
- B29C66/5346—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat
- B29C66/53461—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially flat joining substantially flat covers and/or substantially flat bottoms to open ends of container bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
- B29C66/7486—Paper, e.g. cardboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- 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
- B31B2100/00—Rigid or semi-rigid containers made by folding single-piece 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
- 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
- B31B2110/00—Shape of rigid or semi-rigid containers
- B31B2110/30—Shape of rigid or semi-rigid containers having a polygonal cross section
- B31B2110/35—Shape of rigid or semi-rigid containers having a polygonal cross section rectangular, e.g. square
-
- 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
- B31B2120/00—Construction of rigid or semi-rigid containers
- B31B2120/70—Construction of rigid or semi-rigid containers having corrugated or pleated 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
- 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
- B31B50/26—Folding sheets, blanks or webs
- B31B50/44—Folding sheets, blanks or webs by plungers moving through folding dies
-
- 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
- B31B50/59—Shaping sheet material under pressure
- B31B50/592—Shaping sheet material under pressure using punches or dies
Definitions
- the present invention relates to a drawn paper container by a press and a method for manufacturing the same, and more particularly, to a hermetic drawn paper container that can be hermetically sealed with a lid and a method for manufacturing the same.
- the present invention relates to a drawn paper container having water resistance, hot water resistance and steam resistance, and a method for producing the same.
- trays made of paper formed into trays have been used as disposable containers.
- a tray-shaped paper container is obtained by press-molding a cardboard having a plastic film layer on the surface.
- Similar paper containers made by press molding are disclosed in Japanese Patent Publication No. 56-4803, Japanese Utility Model Application Laid-Open No. 6-80615, and Japanese Patent Application Laid-Open No. Sho 63-176130. And so on.
- a drawn paper container formed by deeply forming paper has been put to practical use.
- the draw-formed paper container formed by the above press cannot be hermetically sealed with a lid simply by drawing. Therefore, in order to reduce the step of the flange, a method of laminating thermoplastic resin on the surface or applying S-line to the blank in advance to narrow down by heat and pressure using an uneven mold is one method. It is commonly used.
- Figures 22 and 23 show such a blank and its cross section. are doing.
- Figure 24 shows a paper container drawn from this blank
- Figure 25 shows a paper container with a lid.
- a thermoplastic resin 3 is laminated on the surface of a paper base material 2
- a wire 4 is provided near a corner of a flange portion.
- the paper container 5 has a drawn flange 6.
- the flange portion 6 is sealed with a lid member 7 after filling the contents (not shown).
- the corner of the flange portion 6 has a large unevenness and a concave gap 8, so that it is difficult to obtain a closed structure.
- the gap 8 referred to here is a tunnel-shaped hole formed by a paper sheet.
- a method for closing the tunnel-like gap 8 a method is known in which after molding the container, a thermoplastic resin is welded by applying ultrasonic waves, high frequency, or the like to the flange portion 6 (Japanese Patent Application Laid-Open No. 2000-2000). Japanese Patent Application Laid-Open No. 33392/1995, Japanese Patent Application Laid-Open No. 10-43027). This welding method using ultrasonic waves or the like is an excellent method that almost eliminates the need to select the type of thermoplastic resin.
- a method of applying ffi force while applying heat to a fold step portion of a flange to crush the flange Japanese Patent Application Laid-Open No. 11-165725.
- the energy of ultrasonic waves or high frequencies it is extremely difficult to control the energy of ultrasonic waves or high frequencies.
- the energy of ultrasonic waves or the like is small, welding of the gap 8 is insufficient.
- the energy of ultrasonic waves or the like is large, a load is also applied to the surface portion 9 between the paper sheets, and the rigidity is reduced and the surface portions are scorched (see Fig. 26). ).
- the appropriate energy such as ultrasonic waves depends on the melting point of the thermoplastic resin and the MI (Melt Index). For example, when the melting point of a thermoplastic resin is high, the energy required for welding increases. If the melting point is low, the reverse is true.
- the welding method using ultrasonic waves or the like requires the use of appropriate energy.However, it is difficult to control the appropriate energy because the appropriate energy differs depending on the shape of the seal of the paper container, the melting point of the resin, MI, etc. Has become.
- An object of the present invention is to provide a draw-formed paper container capable of easily controlling the welding energy and preventing the scorching between wrinkled portions and sufficiently welding the wrinkled portions, and a method of manufacturing the same.
- a drawn-formed paper container including a flange portion drawn and formed from a laminated sheet of a paper base material and a thermoplastic resin layer, wherein the flange portion includes: Only the wrinkled portion generated by drawing is provided with a closed region made of a welded thermoplastic resin, and the closed region is at least a part of the wrinkled portion along the circumferential direction of the flange portion. It is provided in.
- the paper base comprises a thermoplastic resin in an amount of 3% or more based on the weight of the paper base. Internally added or impregnated at a rate of less than 0%.
- a drawn paper container having a flange portion formed by drawing from a paper base material, wherein the paper base material comprises a thermoplastic resin having a weight of 3% based on the weight of the paper base material. % Or more and less than 50%, and the flange portion is a closed area where the thermoplastic resin is welded only to the wrinkles generated by the drawing. The closed area is provided in at least a part of the wrinkled portion along the circumferential direction of the flange portion.
- a method of manufacturing a drawn-formed paper container for manufacturing the drawn-formed paper container according to any of the first to third aspects Forming step and melting the thermoplastic resin on the surface only to the wrinkles of the flange portion by ultrasonic welding, high frequency welding or vibration welding, and Closing at least a part of the wrinkled portion with a thermoplastic resin along the direction.
- FIG. 1 is a plan view showing a blank as a draw-formed paper container according to the first embodiment of the present invention.
- FIG. 2 is a cross-sectional view taken along line 2-2 in FIG.
- FIG. 3 and FIG. 4 are external views of the drawn paper container in the embodiment.
- FIG. 5 is a sectional view taken along line 5-5 in FIG.
- FIG. 8 is a schematic diagram showing the press molding machine in the same embodiment.
- FIG. 9 is a schematic diagram showing an example of ultrasonic welding in the same embodiment.
- FIG. 10 is an enlarged view showing a part of FIG. 9 in an enlarged manner.
- FIG. 11 is an enlarged view showing a modification of FIG.
- FIG. 12 is a sectional view showing a modified example of FIG.
- FIG. 13 is an enlarged view showing a modified example of FIG.
- FIG. 14 is a sectional view showing a modified example of FIG.
- FIGS. 15 and 16 are cross-sectional views showing a blank according to the fourth embodiment of the present invention.
- FIGS. 17 to 19 are cross-sectional views showing a corner of a flange portion according to a sixth embodiment of the present invention.
- FIG. 20 is a cross-sectional view for explaining a pressing step in the embodiment.
- FIG. 21 is a cross-sectional view for explaining vacuum forming according to the seventh embodiment of the present invention.
- FIG. 22 is a plan view showing a blank as a draw-formed paper container according to the conventional embodiment.
- FIG. 23 is a cross-sectional view taken along line 23-23 of FIG. 22.
- FIGS. 24 and 25 are external views of a conventional draw-formed paper container.
- FIG. 26 is a sectional view taken along line 26-26 of FIG.
- FIG. 1 is a plan view of a blank as a draw-formed paper container according to a first embodiment of the present invention
- FIG. 2 is a cross-sectional view taken along line 2-2 in FIG.
- Figures 3 and 4 are external views of the drawn paper container.
- FIG. 5 is a sectional view taken along line 5-5 in FIG. 3, and
- FIG. 6 is a plan view of FIG.
- Line 14 is folded and made.
- the S-line 14 functions as a folding line, and regularly forms wrinkles in the corner.
- the draw-formed paper container 15 is provided with a flange portion 16 on the outer peripheral portion, and can be hermetically closed by the lid member 17. Further, as shown in FIG. 5, the cross section of the corner of the flange portion 16 has a closed area 18 made of a thermoplastic resin welded only to a paper sheet portion by drawing. As will be described later, the closed region 18 is formed by concentrating the welding energy so as not to apply the welding energy to the surface portion 19 between the paper sheet portions. In addition, as shown by the thick line 18 ′ in FIG. 6, the closed region 18 only needs to be provided at least in a part of the seal portion along the circumferential direction of the flange portion 16. For example, the closed region 18 does not necessarily have to be arranged so as to fill all the gaps 8 of the flange portion 16 as shown by the thick line 18 ′ in FIG. The reason is that even with the arrangement shown in FIG. 6, a sealed structure can be obtained.
- the shape of the draw-formed paper container 15 is shown in Figs.
- the shape is not limited to the tray shape shown in FIG. 1, but any shape can be applied as long as it has a flange portion such as a circular cup shape or a bowl-shaped mortar shape.
- the paper base 12 used for the blank 11 can be used as the paper base 12 used for the blank 11. That is, the paper base material is not limited to a so-called paper type. However, considering the formability at the time of drawing, no-coated paperboard is preferred.
- thermoplastic resin imparting rigidity, water resistance, oil resistance, and hot water resistance by external addition as a papermaking step or as a secondary addition after papermaking. Is also good.
- the thermoplastic resin layer 13 may be omitted.
- the basis weight of the paper substrate 12 may be appropriately selected in the range of 150 to 600 g Zm 2 according to the use of the container.
- the density p of the paper substrate 12 can be formed if p ⁇ lg Z cm S, but from the viewpoint of smoothing the flange portion (3a), p ⁇ 0.7 g / cm 3 is preferable. New This is because when / 0 ⁇ 0.7 g / cm 3, there is aesthetics after molding, and the step of the flange 16 after molding is as small as about 30 m.
- the density ⁇ of the paper substrate 12 is
- the paper substrate 12 as described above is shown in FIG. 4 because at least one side of the thermoplastic resin layer 13 or the contained thermoplastic resin.
- the lid 17 can be sealed by heating and pressing.
- the breakage and tearing of the paper when the drawn paper container is formed can be suppressed by the absorption of shearing force by the thermoplastic resin.
- the thermoplastic resin layers 13 are provided on both sides, the slipperiness of the surface at the time of drawing can be improved, so that the paper is less likely to be cut, and the formability can be further improved.
- the thermoplastic resin layer 13 has the function of protecting the contents, especially the function of preventing the leakage of liquid contents, and the sealing property with the lid 17 by heat sealing, moldability, heat resistance, and pinhole resistance. It is necessary to have functions such as For example, poly (ethylene terephthalate) resin or poly (ethylene naphthalate) resin or a mixture thereof, polyethylene resin, polypropylene resin, cyclic polyolefin resin, polyolefin resin such as modified polyolefin resin, and polyolefin resin Acrylonitrile resin, polyvinyl chloride, ethylene-vinyl acetate copolymer, polyamide, polystyrene, polycarbonate, polyvinyl alcohol and other various thermoplastic resin layers, film-like Can be used alone or in layers.
- poly (ethylene terephthalate) resin or poly (ethylene naphthalate) resin or a mixture thereof polyethylene resin, polypropylene resin, cyclic polyolefin resin, polyolefin resin such as modified
- the container can withstand long-distance transportation and long-term storage.
- thermoplastic resin layer 13 When the above thermoplastic resin layers 13 are laminated, when laminated, a low-melting point material such as ethylene-pinyl acetate copolymer on the paper side and a relatively high melting point such as polyethylene terephthalate on the outside are used. It is desirable to arrange a film that is resistant to water and oil.
- the total thickness of the thermoplastic resin layer 13 is desirably in the range of 10 m to 150 m. If the length is not more than 10 m, the effect of using the laminated film is small, and if it is not less than 150 m, the incineration property as a paper container is poor. This thickness range also corresponds to a condition that the thickness is 5% or more and 40% or less with respect to the thickness of the paper base material described later.
- Printing can be performed on one or both of the paper base material 12 and the thermoplastic resin layer 13.
- the lid member 17 is appropriately selected depending on the material of the thermoplastic resin layer 13 on the inner surface of the paper container main body in FIG. 4, but a material having easy pilling is more preferable.
- a urethane-based, ethylene-vinyl acetate-based or other thermoplastic resin can be used as the heat sealant for the lid member 17.
- FIG. 1 A brief description will be given of the process of preparing the above-described drawn paper container. First, as shown in FIG. 1, a plank 11 having the same shape as that of a conventional one can be used.
- the blank 11 is formed into a predetermined shape by punching. If a large number of go-lines 14 are applied in advance as deeply and evenly as possible to the portion of the blank 11 where the squeezing deformation occurs, the squeezed paper container 15 can be formed more beautifully and easily.
- the line 14 can be processed simultaneously with printing and blanking.
- the molding can be performed by a press molding machine 20 composed of a male mold 21 and a female mold 22 and a flange holding plate 23 as shown in FIG. 8, for example.
- a press molding machine 20 composed of a male mold 21 and a female mold 22 and a flange holding plate 23 as shown in FIG. 8, for example.
- the blank 11 is inserted into the press molding machine 20, it is gradually pressed by the male mold 21 while being pressed by the flange holding plate 23 on the outside.
- the blank 11 gradually enters the female mold 22 while sliding, and is pressed. Due to the pressure applied to this press and the clearance 24 between the male mold 21 and the female mold 22, the size of the paper sheet generated on the flange 16 and the side surface (inclined portion) Can be appropriately determined.
- a clearance of about the thickness of a laminated sheet composed of the paper base material 12 and the thermoplastic resin layer 13 is provided, so that a paper container 15 having a good shape is obtained.
- the temperature of the male and female molds 21 and 22 can be appropriately determined according to the softening point and melting point of the thermoplastic resin, but is preferably 250 ° C. or lower. If the mold temperature exceeds 250 ° C, the cellulose fibers themselves of the pulp will start to decompose and the paper itself will be scorched.
- the moisture content of the paper base material 12 be at least 10% by molding in advance at the time of molding.
- water may be previously applied to the blank 11 before molding by a water spray or a gravure coater to instantaneously increase the water content of the paper.
- the moisture content is at least 10% at the time of molding, the elongation of the paper at the time of molding will be promoted, the paper will not be easily torn, and the finish of the paper container will be good.
- agents that impart lubrication include silicone-containing agents, natural rubber, synthetic rubber latex, and acryl-based resin-containing agents.
- agents for imparting water resistance include polyvinyl alcohol resin, starch, silane resin, acryl resin, polyester resin, polyolefin resin, polyisocyanate resin, urethane resin, etc. There is.
- agent that imparts oil resistance examples include a fluorine-based resin, a silicone-based resin, a drug mixed with an alkyl ketene dimer, and a urethane-based resin.
- agents that impart chemical resistance include fluororesins, urethane resins, urea resins, and alkyd resins.
- the ultrasonic welding, the high frequency welding or the vibration welding method is applied to only the tunnel-shaped gap 8 of the flange portion 16 having a recess formed by the go line 14.
- thermoplastic resin on the surface of the gap 8 is melted, and the tunnel-shaped space in the concave portion is filled to form a closed region 18.
- FIG. 9 and 10 show examples of ultrasonic welding.
- the flange part 16 of the paper container is sandwiched between the anvil 31 and the ultrasonic horn 32, pressurized and oscillated to generate internal heat.
- the thermoplastic resin on the surface is softened and allowed to flow to bury the irregularities of the flange portion 16, thereby forming a closed region 18 as shown in FIG.
- the paper is crushed by the pressure of calo, which increases the strength of the flange and the strength of the entire container.
- a horn 32 having a convex portion 32a as shown in FIG. Using the horn 32, the projection 32a of the horn 32 is applied only to the tunnel-shaped paper sheet. Therefore, the resin can be welded efficiently without using extra energy.
- FIGS. 10 and 5 show the case where the thermoplastic resin layer 13 is provided on the paper base material 12, it is needless to say that the same applies to other cases. .
- the paper substrate 12 contains a thermoplastic resin
- it can be processed as shown in FIG. 11 to form a closed area 18 as shown in FIG.
- the paper base material contains a thermoplastic resin and the thermoplastic resin layer 13 is omitted, processing is carried out as shown in FIG. 13 and as shown in FIG. 8 can be formed.
- the laminated thermoplastic resin is welded only to the paper sheet portion generated in the flange portion.
- the energy can be efficiently controlled.
- the present embodiment it is possible to easily control the welding energy, prevent the scorching between the wrinkled portions, and sufficiently weld the wrinkled portions.
- the paper sheet of the flange portion is neatly folded at the same height by the wire drawing process, the formability can be improved.
- press forming after forming and welding it is possible to manufacture a hermetically sealed container in which the unevenness of the flange portion is small and the seal is easily sealed.
- thermoplastic resin is contained in a paper base 12 of a draw-formed paper container 15. That is, it corresponds to the cases of FIGS. 11 to 14 described above.
- thermoplastic resin of the paper base 12 is melted by the heat applied to the male mold 21 and the female mold 22 during drawing, and the paper base 12 is stretched and given elasticity. Improve moldability. Cooling after molding imparts dimensional stability and rigidity to the paper container.
- the amount of the thermoplastic resin of the paper substrate 12 must be 3% or more and less than 50% based on the weight of the paper.
- the amount of the thermoplastic resin is preferably about 10% or more and about 30% or less, and the finish is beautiful.
- the amount of the thermoplastic resin is less than 3%, it is difficult to give the paper a stretchability or the like due to melting by heat during molding.
- the amount of the thermoplastic resin is 50% or more, it is not preferable for the environment because it does not correspond to the paper container specified in the Containers and Packaging Recycling Law due to low paper conversion rate.
- thermoplastic resin contained in the paper substrate 1 2 Various resins described in the section can be used.
- the paper base material 12 is impregnated with the isocyanate compound in advance, the fiber strength when wet can be maintained. Above all, xylene isocyanate or isophorone diisocyanate is preferable in terms of strength.
- the amount of the impregnated isocyanate compound is 3 to 30% of the weight of the paper base material, good heat resistance and steam resistance can be imparted, and it can be used for pasteurization, retort sterilization, and autoclaving. Available.
- This paper base 12 reduces the cushioning property and facilitates the insertion of X-rays depending on the density of the resin internally added or impregnated, even in the case of low-density paper having high cushioning properties. I can do it.
- thermoplastic resin contained therein is melted and fixed by the heat of 250 ° C. or less during press molding, so that the moldability of the flange portion 16 is dramatically improved. Improve and stabilize dimensions after molding. Therefore, it can be said that it is a paper container that can obtain a sealed structure more easily than ordinary paper and that can be easily subjected to post-processing.
- thermoplastic resin is melted and fixed by the heat of the mold at the time of molding, it is possible to manufacture a drawn molded paper container which is hardly broken in the paper base and has high rigidity after molding.
- the paper container 15 is also suitable for processing or processing that requires dimensional stability, such as filling the tunnel-shaped gap 8 with a resin or filling a food or the like with a filling machine.
- the third embodiment is a specific example of the first or second embodiment.
- a paper base 12 and a thermoplastic resin layer 13 are formed by a lamination method by extrusion molding (hereinafter, extruder laminating). (Also called the one-shot method).
- extruder laminating Also called the one-shot method.
- the thermoplastic resin layer 13 is used, as described above, paper breakage or tearing during drawing can be suppressed, and slipperiness and moldability can be improved.
- the adhesive interface between the thermoplastic resin layer 13 and the paper base material 12 follows the paper by the extruder lamination method to further improve the formability. it can.
- the lamination method a dry lamination method using an adhesive or the like can be used.
- the adhesive surface is fixed, and the adhesive surface tends to decrease resistance to shearing force. Therefore, the extruder lamination method is preferred.
- the molten resin may be flowed directly to the paper substrate. Further, a treatment such as sand lamination, in which the laminated film is sandwiched between molten resins and then laminated, may be performed.
- the extrusion lamination method it is important that the paper substrate 12 and the thermoplastic resin layer 13 are laminated by a resin layer, and each resin layer or film is formed by the lamination. It can be determined appropriately depending on the type and thermal properties.
- each of the welding methods can appropriately laminate a fusible resin to a paper base, so that a wide range of resins can be selected.
- the adhesive interface between the thermoplastic resin layer 13 and the paper base material 12 is formed by the extruder lamination method.
- formability can be further improved.
- the thickness t 1 of the thermoplastic resin layer 13 is the same as that of the paper base 12.
- the thickness t 1 of the thermoplastic resin layer 13 is less than 5%, it is difficult to partially and completely fill the gap 8 of the flange portion 16 during welding by ultrasonic waves or the like.
- the thermoplastic resin layer When the thickness t 1 of 13 is 40% or more, the forming conditions are difficult due to the interaction between the drawability of the resin layer 13 and the drawability of the paper substrate 12, and the flange portion 16 is formed. become unable. Further, when the thickness t1 of the thermoplastic resin layer 13 is large, the rebound of the resin layer 13 is large, so that it is difficult to insert the wire 14 into the wire.
- the thickness t 1 of the thermoplastic resin layer 13 also affects the moldability with the paper base material 12 and the resin filling property for creating a closed structure for post-processing.
- thermoplastic resin layer 13 having a thickness t1 of about 5 to 40% with respect to the paper base 12 is provided. With this configuration, it is possible to ensure the amount of resin that only fills the gap 8 and good moldability.
- thermoplastic resin layer 13 has a tensile elongation (JISP 8113) of 150% or more. .
- thermoplastic resin follows the paper substrate 12 at the time of drawing, and good moldability is exhibited.
- thermoplastic resin layer 13 for example, a polyethylene terephthalate resin, a polyethylene naphthalate resin or a mixture thereof, a polyolefin resin such as a polyethylene resin or a polypropylene resin, Ethylene vinyl acetate copolymer, polyamide, polystyrene, polyvinyl alcohol, etc.
- a polyethylene terephthalate resin a polyethylene naphthalate resin or a mixture thereof
- polyolefin resin such as a polyethylene resin or a polypropylene resin, Ethylene vinyl acetate copolymer, polyamide, polystyrene, polyvinyl alcohol, etc.
- Various kinds of thermoplastic resin layers and films can be used singly or laminated.
- polyethylene resins and polypropylene resins polypropylene resins
- polyolefin resins in a random or copolymer form are preferred.
- the load at the time of drawing on the paper substrate 12 can be reduced by the thermoplastic resin having good tensile elongation. It is possible to reduce troubles such as tears.
- t 3 is set to 50% to 250% with respect to the thickness t 2 of the paper substrate 12.
- the thickness t3 of the flange portion 16 is less than 50% of the thickness t'2 of the paper substrate 12, the rigidity of the flange portion is lost, the strength is not obtained, and the feeling of opening after sealing (peeling feeling) Inconveniences such as difficulties arise. If the thickness t 3 of the flange portion 16 is more than 250% of the thickness t 2 of the paper substrate 12, the lid portion 17 may be worn because the flange portion 16 has excessive irregularities. It becomes extremely difficult.
- the thermoplastic resin is melted in the tunnel-shaped gap 8 of the flange portion 16 by ultrasonic welding or the like to obtain a sealed structure. .
- the thickness t 3 of the flange portion 16 is adjusted by pressing or the like to the paper substrate 1 2.
- the container is crushed to 50% to 250% of the thickness t2, making the container easy to seal.
- the container body 15 is placed on the anvil 42 that is located directly below the press plate 41 with a smooth surface and presses only the flange portion 16. Thereby, only the flange portion 16 can be pressurized intensively.
- a large number of container types in the anvil 42 a large number of containers can be pressed simultaneously, so that production efficiency can be improved.
- the thickness t 3 of the flange portion 16 is set to 50% with respect to the thickness t 2 of the paper base 12.
- a composition of up to 250% it is possible to provide a drawn paper container which is easy to seal and easy to obtain a closed structure.
- the strength of the container flange can be improved, and a paper container having easy opening properties can be manufactured.
- the seventh embodiment of the present invention is a modified example of each of the first to sixth embodiments, wherein the inner side (concave side or upper side) of the draw-formed paper container is used.
- a thermoplastic resin film is provided.
- the formed draw-formed paper container body is placed in a forming die 51 for vacuum forming or pressure forming. Then, while sucking air from the vacuum holes 52, the thermoplastic resin layer or the film 13 ′ kept in the heated state is brought into contact with the molding die 51 while gradually lowering it. Subsequently, the thermoplastic resin layer or the film 13 ′ is welded to the body of the deep drawn paper container while the suction is continued. After the welding is completed, the suction is stopped, and the thermoplastic resin layer or the film is cut around the outer periphery of the main body of the squeezed paper container to manufacture the container.
- thermoplastic resin film is added to the inner surface side of the drawn paper container 15, Further, formability can be improved.
- Example 1 was created according to the following specifications.
- Shape Square shape (14 round corners)
- the blank 1 1 is a paper substrate 1 2, 20 with a density of 350 g Zm 2 It is composed of m-thick polyethylene and 40 / m-thick multilayer film.
- the paper substrate 12 is a resin-mixed paper made of 30% polyethylene resin.
- the multilayer film is a laminated film of LDPE (low density polyethylene) and PP (polypropylene).
- the lid material 17 is a laminated structure of a 12 m thick silicon oxide vapor-deposited PET (polyethylene terephthalate) film and a 40 m thick CPP (unstretched polypropylene) film. .
- a multilayer film of LDPEZPP was laminated on a paper substrate 12 by extruding a polyethylene resin at 310 ° C. by an extrusion lamination method and laminated.
- blanks 11 were created by drawing a line of about 150 ⁇ m by punching, and drawing was performed as shown in Fig.8.
- the mold temperature was 100 ° C. for the male mold 21 on the film side and 150 ° C. for the female mold 22 on the paper side.
- the draw forming was performed with a mold clear force 24 of a flange portion 350 m and a side surface portion of 300 m with a mold clamping force of 144 OMPa.
- the ultrasonic treatment was performed by applying the convex portion 31a of the horn 31 only to the flange portion.
- cover material 17 was sealed for 3 s, sealing temperature was 150 ° C, Sealing was performed at a sealing pressure of 0.3 MPa, and sealing was evaluated with a pinhole check solution.
- the drawn paper container had a substantially smooth paper sheet on the side surface, had rigidity, and had a beautiful finish.
- Example 2 the draw-formed paper container of Example 1 was subjected to press working.
- the draw-formed paper container body of Example 1 was pressed at about 97 OMPa per container.
- the temperature of the press plate 41 is about 80. After the press molding, it became possible to crush the thickness t 3 of the flange portion 16 from 320% to 120% of the thickness t 2 of the paper base material.
- the lid member 17 of Example 1 was sealed with a sealing time of 1 s, a sealing temperature of 150, and a sealing pressure of 0 to 29 MPa, and sealing was evaluated with a pinhole check solution.
- Example 2 As a result, as in the case of Example 1, a good drawn paper container could be produced. In addition, since the draw-formed paper container of Example 2 was flange-pressed, a closed structure could be obtained with a short sealing time of 1 second.
- Comparative Example 1 uses a large and smooth horn in place of the horn 31 having the convex portion 31a of the first embodiment.
- Comparative Example 1 the entire flange portion 6 was subjected to the ultrasonic treatment. Except for applying a horn to, a drawn-formed paper container 5 was produced using the same materials and under the same conditions as in Example 1, and the lid 7 was sealed.
- Example 3 is obtained by performing hot water treatment on Example 1.
- the drawn paper container 15 of the first embodiment is further filled with water, and is subjected to a constant-differential-pressure hot-water sterilizer (spray type).
- the flange portion 16 was welded with the resin, and although the shape was maintained, slight delamination of the paper was observed, and the rigidity was reduced.
- Example 4 is different from the blank 11 of Example 1 in that a multilayer film containing EVOH (ethylene-vinyl acetate copolymer) was used.
- EVOH ethylene-vinyl acetate copolymer
- the blank 11 of the fourth embodiment is composed of the paper base 12 of the first embodiment, the polyethylene of the first embodiment, and a multilayer film having a thickness of 45.
- the multilayer film is a laminated filem of LDPEZEVOHZPP.
- Example 4 is the same as Example 1 except for this blank 11. It was produced under one condition.
- Example 4 in addition to the effects of Example 1, the hermeticity could be improved. Specifically, in Example 4, it was possible to obtain a level of oxygen barrier property of 0.05 cc / package per day.
- Example 4 the same results as in Example 3 were obtained when the hot water treatment of Example 3 was performed.
- Example 5 is different from blank 11 of Example 1 in that a paper impregnated with a xylene diisocyanate resin and a multilayer film containing EVOH were used.
- the blank 11 of Example 5 is composed of a paper substrate 12 having a density of 350 gm2 and a multilayer film 13 having a thickness of 45 m.
- the paper substrate 12 is a resin-impregnated paper obtained by dry-impregnating a cup base paper with a xylene diisocyanate resin at a paper substrate ratio of 5%.
- the multilayer film 13 is a laminated film of EVOHZPP.
- Example 5 was manufactured under the same conditions as Example 1 except for the blank 11.
- Example 5 in addition to the effects of Example 1, the same oxygen barrier properties as Example 4 could be obtained.
- Example 5 when the hot water treatment of Example 3 was performed, the flange portion was welded with resin, and the shape was maintained.
- Example 5 shows that the impregnated xylene diisocyanate resin was used. Due to the effect, no delamination of the paper was observed, and the rigidity of the container was high, confirming that the container could withstand the retort treatment.
- Comparative Example 2 is the same as the blank of Comparative Example 1, except that the paper substrate was replaced with a non-coated base paper.
- the blank 1 of Comparative Example 2 was composed of the paper base material 2 made of a non-coated base paper having a density of 350 g / m 2 and the polyethylene and the multilayer film of Comparative Example 1.
- Comparative Example 2 was manufactured under the same conditions as Comparative Example 1 except for Planck 1.
- Comparative Example 2 As a result, in Comparative Example 2, when a pinhole check was performed, air leaked. Further, in Comparative Example 2, a small amount of paper sheet was left on the side surface, and the fold forming of the flange 6 was shifted. Further, the stiffness of Comparative Example 2 gradually became weak due to the repulsion of the paper, and did not reach the resin-mixed papers of Examples 1 to 5.
- Comparative Example 2 when the hot water treatment of Example 3 was performed, the flange portion 6 was completely opened at an unwelded portion, and the shape was not retained at all and the deformation was large. In Comparative Example 2, delamination of paper was also observed, and there was almost no rigidity.
- Comparative Example 3 uses the multilayer film containing EVOH (ethylene-vinyl acetate copolymer) in Blank 1 of Comparative Example 2.
- EVOH ethylene-vinyl acetate copolymer
- the blank 1 of Comparative Example 3 is composed of the paper base material of Comparative Example 2 (no-coat cup base paper), the polyethylene of Comparative Example 1, It is composed of a multilayer film with a thickness of m.
- the multilayer film is a laminated film of LDPEZEVOHZPP.
- Comparative Example 3 was manufactured under the same conditions as Comparative Example 1 except for Blank 1.
- Comparative Example 3 was similar to Comparative Example 2. That is, although Comparative Example 3 includes the EVOH layer having gas barrier properties, since the same pinhole as in Comparative Example 2 was present, the gas barrier properties of the EVOH layers became meaningless.
- Resin mixed paper (Examples 1 to 15) are containers using cup base paper.
- the rigidity is greatly improved. Furthermore, the rigidity of the container (Example 5) in which the resin of the resin-resin mixed paper is made of an isocyanate resin is slightly higher than that of the polyethylene resin (Examples 14 to 14).
- the container using resin-mixed paper (Examples 1 to 15) has better moldability and greatly improves the sealability of the pinhole check liquid compared to the container using cup base paper (Comparative Examples 13 to 13). I do. Further, among the examples 1 to 5, the containers using the resin having gas barrier properties (Examples 4 and 5) have airtightness. The container using the cup base paper (Comparative Examples 13 to 13) was poor in moldability and could not be sealed.
- the container using the isocyanate resin (Example 5) maintained its rigidity even after retorting due to the effect of impregnation with the isocyanate resin. This is much more effective than ordinary cup base paper (Comparative Examples 1-3), and much more effective than thermoplastic resins such as polyethylene (Examples 1-4). Further, the container using the isocyanate-based resin (Example 5) is completely welded to the flange portion, so that the flange portion does not open even after retorting, and the shape is maintained. I was
- the energy of welding can be controlled easily, and the draw-molded paper container which can fully weld a wrinkle part while preventing scorch between wrinkle parts, and its manufacturing method are obtained.
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- Laminated Bodies (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004509543A JPWO2003101839A1 (ja) | 2002-05-31 | 2003-05-30 | 絞り成形紙容器及びその製造方法 |
AU2003241972A AU2003241972A1 (en) | 2002-05-31 | 2003-05-30 | Drawn paper container and method of manufacturing the paper container |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-159920 | 2002-05-31 | ||
JP2002159920 | 2002-05-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003101839A1 true WO2003101839A1 (fr) | 2003-12-11 |
Family
ID=29706528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/006832 WO2003101839A1 (fr) | 2002-05-31 | 2003-05-30 | Recipient de papier etire et procede de fabrication de ce recipient |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPWO2003101839A1 (ja) |
AU (1) | AU2003241972A1 (ja) |
WO (1) | WO2003101839A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006103726A (ja) * | 2004-10-04 | 2006-04-20 | Kyodo Printing Co Ltd | 紙容器用ブランクおよび紙容器 |
JP2006234362A (ja) * | 2005-02-28 | 2006-09-07 | Komatsu Electronics Inc | 熱交換器及び熱交換器の製造方法 |
JP2008087819A (ja) * | 2006-10-02 | 2008-04-17 | Dainippon Printing Co Ltd | 絞り成形紙製容器およびその製造方法 |
WO2009115582A1 (en) * | 2008-03-20 | 2009-09-24 | Huhtamäki Oyj | Deep pressed tray |
JP2010264986A (ja) * | 2009-05-12 | 2010-11-25 | Nakai Shiki Kogyo Kk | 紙成形品の製造方法及び製造装置 |
JP2012528056A (ja) * | 2009-05-26 | 2012-11-12 | ミードウエストベコ・コーポレーション | 密閉シールされた容器 |
EP4053029A1 (en) * | 2021-03-01 | 2022-09-07 | Dimosthenis Panagiotopoulos | Recyclable tray with airtight sealing, methods of production and uses associated |
IT202100017249A1 (it) * | 2021-06-30 | 2022-12-30 | Mondini S R L | Metodo e apparecchiatura per la realizzazione di un contenitore comprendente una vaschetta rivestita internamente con uno strato di materiale termoplastico |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000033927A (ja) * | 1998-07-16 | 2000-02-02 | Dainippon Printing Co Ltd | 深絞り紙トレーの製造方法 |
JP2000033928A (ja) * | 1998-07-16 | 2000-02-02 | Dainippon Printing Co Ltd | 深絞り紙トレーおよびその製造方法 |
JP2001328617A (ja) * | 2000-05-19 | 2001-11-27 | Dainippon Printing Co Ltd | 密封型紙トレー容器およびその製造方法 |
-
2003
- 2003-05-30 JP JP2004509543A patent/JPWO2003101839A1/ja active Pending
- 2003-05-30 AU AU2003241972A patent/AU2003241972A1/en not_active Abandoned
- 2003-05-30 WO PCT/JP2003/006832 patent/WO2003101839A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000033927A (ja) * | 1998-07-16 | 2000-02-02 | Dainippon Printing Co Ltd | 深絞り紙トレーの製造方法 |
JP2000033928A (ja) * | 1998-07-16 | 2000-02-02 | Dainippon Printing Co Ltd | 深絞り紙トレーおよびその製造方法 |
JP2001328617A (ja) * | 2000-05-19 | 2001-11-27 | Dainippon Printing Co Ltd | 密封型紙トレー容器およびその製造方法 |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006103726A (ja) * | 2004-10-04 | 2006-04-20 | Kyodo Printing Co Ltd | 紙容器用ブランクおよび紙容器 |
JP2006234362A (ja) * | 2005-02-28 | 2006-09-07 | Komatsu Electronics Inc | 熱交換器及び熱交換器の製造方法 |
JP2008087819A (ja) * | 2006-10-02 | 2008-04-17 | Dainippon Printing Co Ltd | 絞り成形紙製容器およびその製造方法 |
WO2009115582A1 (en) * | 2008-03-20 | 2009-09-24 | Huhtamäki Oyj | Deep pressed tray |
EP2193997A1 (en) * | 2008-03-20 | 2010-06-09 | Huhtamäki Oyj | Deep pressed tray |
JP2010264986A (ja) * | 2009-05-12 | 2010-11-25 | Nakai Shiki Kogyo Kk | 紙成形品の製造方法及び製造装置 |
JP2012528056A (ja) * | 2009-05-26 | 2012-11-12 | ミードウエストベコ・コーポレーション | 密閉シールされた容器 |
EP4053029A1 (en) * | 2021-03-01 | 2022-09-07 | Dimosthenis Panagiotopoulos | Recyclable tray with airtight sealing, methods of production and uses associated |
IT202100017249A1 (it) * | 2021-06-30 | 2022-12-30 | Mondini S R L | Metodo e apparecchiatura per la realizzazione di un contenitore comprendente una vaschetta rivestita internamente con uno strato di materiale termoplastico |
EP4112272A1 (en) * | 2021-06-30 | 2023-01-04 | Mondini S.r.l. | Method and apparatus for making a container comprising a tray internally covered with a layer of thermoplastic material |
Also Published As
Publication number | Publication date |
---|---|
JPWO2003101839A1 (ja) | 2005-09-29 |
AU2003241972A1 (en) | 2003-12-19 |
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