WO2001021380A1 - Procede de moulage pour obtenir un produit moule par soufflage - Google Patents
Procede de moulage pour obtenir un produit moule par soufflage Download PDFInfo
- Publication number
- WO2001021380A1 WO2001021380A1 PCT/JP2000/006272 JP0006272W WO0121380A1 WO 2001021380 A1 WO2001021380 A1 WO 2001021380A1 JP 0006272 W JP0006272 W JP 0006272W WO 0121380 A1 WO0121380 A1 WO 0121380A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- molding
- mold
- cooling
- resin
- Prior art date
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 102
- 238000000034 method Methods 0.000 title claims abstract description 69
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 33
- 238000007493 shaping process Methods 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 65
- 238000002425 crystallisation Methods 0.000 claims description 47
- 230000008025 crystallization Effects 0.000 claims description 47
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000007796 conventional method Methods 0.000 claims description 2
- 238000007664 blowing Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000002932 luster Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 description 50
- 229920005989 resin Polymers 0.000 description 39
- 239000011347 resin Substances 0.000 description 39
- 238000010438 heat treatment Methods 0.000 description 20
- 239000002826 coolant Substances 0.000 description 19
- -1 polypropylene Polymers 0.000 description 19
- 239000004743 Polypropylene Substances 0.000 description 15
- 229920006038 crystalline resin Polymers 0.000 description 11
- 229920001155 polypropylene Polymers 0.000 description 11
- 238000012546 transfer Methods 0.000 description 10
- 238000009740 moulding (composite fabrication) Methods 0.000 description 9
- 238000000071 blow moulding Methods 0.000 description 8
- 239000004677 Nylon Substances 0.000 description 6
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- 239000000454 talc Substances 0.000 description 4
- 229910052623 talc Inorganic materials 0.000 description 4
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 229920001400 block copolymer Polymers 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
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- 239000004700 high-density polyethylene Substances 0.000 description 3
- 239000011256 inorganic filler Substances 0.000 description 3
- 229910003475 inorganic filler Inorganic materials 0.000 description 3
- 229920005672 polyolefin resin Polymers 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000004904 shortening Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 229920006127 amorphous resin Polymers 0.000 description 2
- 150000004984 aromatic diamines Chemical class 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 239000012809 cooling fluid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 239000002667 nucleating agent Substances 0.000 description 2
- 239000012766 organic filler Substances 0.000 description 2
- 238000010422 painting Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 238000012643 polycondensation polymerization Methods 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- BGJSXRVXTHVRSN-UHFFFAOYSA-N 1,3,5-trioxane Chemical compound C1OCOCO1 BGJSXRVXTHVRSN-UHFFFAOYSA-N 0.000 description 1
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 1
- 125000001140 1,4-phenylene group Chemical group [H]C1=C([H])C([*:2])=C([H])C([H])=C1[*:1] 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000004230 Fast Yellow AB Substances 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 229920010524 Syndiotactic polystyrene Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- ZFTFAPZRGNKQPU-UHFFFAOYSA-N dicarbonic acid Chemical compound OC(=O)OC(O)=O ZFTFAPZRGNKQPU-UHFFFAOYSA-N 0.000 description 1
- NJLLQSBAHIKGKF-UHFFFAOYSA-N dipotassium dioxido(oxo)titanium Chemical compound [K+].[K+].[O-][Ti]([O-])=O NJLLQSBAHIKGKF-UHFFFAOYSA-N 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005323 electroforming Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229940018564 m-phenylenediamine Drugs 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920005673 polypropylene based resin Polymers 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- CENHPXAQKISCGD-UHFFFAOYSA-N trioxathietane 4,4-dioxide Chemical compound O=S1(=O)OOO1 CENHPXAQKISCGD-UHFFFAOYSA-N 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6604—Thermal conditioning of the blown article
- B29C49/6605—Heating the article, e.g. for hot fill
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4823—Moulds with incorporated heating or cooling means
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
- B29C35/041—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids
- B29C2035/042—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids other than water
- B29C2035/043—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using liquids other than water oil
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/16—Cooling
- B29C2035/1616—Cooling using liquids
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/48—Moulds
- B29C49/4823—Moulds with incorporated heating or cooling means
- B29C2049/4825—Moulds with incorporated heating or cooling means for cooling moulds or mould parts
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
- B29C49/6604—Thermal conditioning of the blown article
- B29C2049/6606—Cooling the article
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
- B29C49/786—Temperature
- B29C2049/7864—Temperature of the mould
- B29C2049/78645—Temperature of the mould characterised by temperature values or ranges
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- 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
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
- B29C49/041—Extrusion blow-moulding using an accumulator head
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
- B29K2995/0037—Other properties
- B29K2995/0041—Crystalline
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
- Y10S264/90—Direct application of fluid pressure differential to shape, reshape, i.e. distort, or sustain an article or preform and heat-setting, i.e. crystallizing of stretched or molecularly oriented portion thereof
- Y10S264/904—Maintaining article in fixed shape during heat-setting
Definitions
- the present invention relates to a method for molding a hollow molded article, and particularly to a hollow molded article made of a crystalline thermoplastic resin, which has excellent surface gloss, a mold transfer property such as an embossed surface, and an appearance free from sink marks and warpage.
- the present invention relates to a molding method capable of producing hollow molded articles with high productivity. Background art
- the surface of the obtained hollow molded product may be melt-fractured, die-lined, or entrained by gas, even if a mold having a mirror-finished molding surface is used. Pricking patterns and the like due to crystallization were liable to occur, and the mold surface could not be faithfully transferred, making it difficult to mold a hollow molded product with excellent appearance such as gloss. In particular, this is a major problem in the case of crystalline thermoplastic resin.
- a method for manufacturing a hollow molded article with excellent surface gloss is as follows: (1) A parison having a large number of fine irregularities with a depth of 2 to 100 / zm formed on the surface is mirror-finished to 0.5 S or less. A manufacturing method has been proposed in which the mold temperature is reduced to the crystallization temperature or lower after the mold is finished, sandwiched in a mold heated to a temperature higher than the crystallization temperature of the resin, and blow-molded. No. 8). However, this method requires control of the parison, is limited to resins that generate melt fracture as a crystalline resin, and melt fracture is not desirable in terms of the appearance of molded products. There is.
- Another molding method is as follows: (2) Supply a softened resin containing a crystalline resin, parison, between the molds, and after clamping, pressurize the fluid inside the parison to tightly close the mold surface.
- the temperature of the mold is maintained between the temperature at which the crystallization speed of the crystalline resin is the maximum and the melting point, and the fluid as the refrigerant is pumped into the parison.
- a molding method has been proposed in which this fluid is circulated while applying pressure (Japanese Patent Application Laid-Open No. Hei 4-77231).
- the method using a resin with low melt viscosity has a drawback that the drawdown is severe and especially large-sized molded products cannot be molded.
- the resin to be used is limited, the equipment such as a multi-layer die is complicated, and it is not an essential solution.
- ⁇ A method has been proposed in which a mold forming surface is heated to a temperature equal to or higher than a thermoplastic resin's softening temperature to form a shape, and then cooled to (picker softening temperature-10) or less to form a molding (JP-A-Hei. No. 8—2 7 6 4 3 2).
- this molding method is a preferable method for an amorphous thermoplastic resin such as an ABS resin, but has a problem in application to a crystalline resin such as a polypropylene resin.
- ⁇ ⁇ a process for blow molding polypropylene is characterized in that the mold is at least temporarily heated to a temperature of at least 140 from the start of mold clamping until the mold is opened and the blow molded product is taken out.
- a molding method has been proposed (Japanese Patent Application Laid-Open No. 10-138324).
- the present invention is a molding method suitable for producing a blow molded product for an automobile exterior having a surface gloss of 75% or more.
- this molding method usually requires a professional molding at a mold temperature of 8 or less, followed by shaping, and then raising the temperature to 14 mm or more. Wide range of heating and cooling temperature in one molding cycle of mold temperature May be.
- the hollow (blow) molding method is suitable for molding large, lightweight molded products because the molding pressure is low, the mold is inexpensive including the material of the mold, and the mold clamping pressure is low. Is the way.
- the mold transferability is not enough due to the low molding pressure and the molding pressure is low.
- the mold surface temperature during molding with the parison blow is increased to a high temperature, crystalline thermoplasticity. It has been proposed to heat the resin near the crystallization temperature, and for amorphous thermoplastics near Tg. If the temperature of the molding die is high, it is difficult to cool after shaping, and there is a problem that the molding cycle is inevitably lengthened and productivity is reduced.
- cooling method after shaping heating and cooling of the mold temperature are repeated for each molding cycle.
- many methods have been proposed, such as blowing a cooling medium into the hollow body after blow molding and shaping, and directly cooling the thermoplastic resin hollow body from the inside with a refrigerant.
- the cooling of the parison in the hollow molding method after gas injection is performed from the viewpoint of improving the molding cycle, by cooling the mold, cooling directly from the inside of the hollow body with a cooling medium, or a combination thereof.
- how to cool efficiently is important, and attempts have been made to improve the cooling rate.
- the present invention relates to a hollow (blow) molding method using a crystalline thermoplastic resin, in which, in addition to good gloss due to improvement in mold transferability of the molded product, generation of warpage of the molded product, and the like.
- An object of the present invention is to provide a molding method for producing a molded product having excellent dimensional stability without productivity. Disclosure of the invention
- the present inventors have conducted intensive studies on the surface transfer properties such as surface gloss and textured surface, sink marks and warpage of molded articles, and particularly on a hollow (blow) molding method using a crystalline thermoplastic resin. By controlling the conditions, we found that in addition to gloss, sink marks and warpage were eliminated, and the overall appearance was improved. The present invention has been completed based on such findings.
- the mold temperature is in the range of (crystallization temperature-10 ° C) to (crystallization temperature + 10) of the crystalline thermoplastic resin, and the holding time is 40 to 250 seconds.
- FIG. 1 is a conceptual sectional view of a state before a mold is clamped in a method for molding a hollow molded product according to one embodiment of the present invention.
- FIG. 2 is an explanatory diagram showing a cooling temperature pattern after the hollow molded article of the present invention has been shaped by a mold.
- 1 is an extrusion die
- 2 is a molding die
- 3 is a mold temperature control tube
- 4 is a cooling fluid jacket
- 5 is a cooling medium inlet
- 6 is a cooling medium outlet
- 7 is a parison seal
- 8 is a gas blower.
- a pipe, 9 is a gas injection pipe
- 10 is a parison.
- the method of molding a hollow molded article according to the present invention is excellent in mold transferability such as gloss of the molded article, and does not require secondary processing such as polishing and painting. And a molding method for producing various hollow molded articles.
- the hollow (blow) molding method many methods have been proposed for improving the transferability of a molding die to form a molded article having excellent gloss. That is, in these molding methods, basically, air is blown into a molten resin parison to a molding die heated to around a crystallization temperature of a crystalline thermoplastic resin, and the molding is performed by pressing against a mold surface. Things. With this molding method, it is possible to obtain a hollow molded article having excellent gloss.
- the blow molding method has an extremely small molding pressure, that is, an air blowing pressure, and a small pressing force on the mold in cooling after the press molding on the mold. Furthermore, due to the hollow structure inside and the relatively thin wall, sinking is likely to occur on the surface when cooled under normal cooling conditions, especially when the gloss of the molded product is high. It was found that it was easily noticeable and sometimes became a problem in commercialization.
- the molding is performed by blowing a gas into the interior of the molten parison, in which the molding temperature is near the crystallization temperature of the crystalline thermoplastic resin. Then, when cooling, it is kept in a specific temperature range for a predetermined time, and then cooled by an ordinary method. That is, in the conventional cooling after mold transfer molding, the temperature is kept in a temperature range lower than the crystallization temperature by a specific temperature in relation to the crystallization temperature of the resin.
- the temperature to be maintained is [crystallization temperature-153 ⁇ 4]-[crystallization temperature-4
- the holding temperature exceeds the upper limit, the crystallization rate is slow and the productivity is reduced, and if the holding temperature is less than the lower limit, the uniformity of the crystallization rate between the molded product parts is reduced, and sink marks are generated. It is difficult to control
- the holding time is usually 30 to 300 seconds, preferably 40 to 200 seconds. The longer the holding time is, the more effective it is. However, if the holding time is longer than 300 seconds, it is not preferable because the molding cycle becomes longer and the productivity decreases.
- This temperature range and holding time are determined based on the tolerance of sink on the molded product surface, taking into account the size of the hollow molded product, the thickness of the molded product, the type of resin, and the presence of additives. Can be determined.
- the method for molding a hollow molded article of the present invention is not only controlled by crystallization on the surface of the hollow molded article, but also by comprehensively controlling the crystallization of the entire molded article.
- This makes it possible to obtain hollow molded products with improved characteristics such as surface gloss and sink marks and warpage, as well as overall appearance and dimensional accuracy.
- the present invention will be specifically described with reference to the drawings.
- FIG. 1 is a conceptual cross-sectional view of a state before mold clamping in a method of molding a hollow molded product according to one embodiment of the present invention.
- FIG. 2 is an explanatory diagram showing a cooling temperature pattern after the hollow molded article of the present invention has been shaped by a mold.
- FIG. 1 1 is an extrusion die
- 2 is a molding die
- 3 is a mold temperature control tube
- 4 is a cooling fluid jacket
- 5 is a cooling medium inlet
- 6 is a cooling medium outlet
- 7 is a Parison seal
- Reference numeral 8 denotes a gas injection pipe
- 9 denotes a gas injection pipe from a mold
- 10 denotes a parison.
- Figure 1 shows an example of a mold for forming a box-shaped hollow molded product.
- the mold surface 2C is heated near the crystallization temperature of the crystalline thermoplastic resin by the mold temperature control tube 3 by the circulation of heating oil. I have.
- the crystalline thermoplastic resin is melted, kneaded and extruded by an extruder.
- a cylindrical parison 1 is extruded between a pair of opened molds 2A and 2B by an extrusion die 1. Extruded as 0.
- the lower end of the parison 10 is sealed by a parison seal 7.
- air is blown into the parison 10 from the gas blowing tube 8 to pre-blow the parison 10 and expand the Norrison 10 to some extent.
- the parison is held between the molding dies 2A and 2B. After the mold 2 is started to clamp, the gas is blown into the parison at an arbitrary position after the clamp is completed to form the parison in close contact with the mold surface.
- the gas injection pipes 9A and 9B are protruded from the mold surface, pierced into the parison wall, and air is blown in, so that the parison is blown. Inflate, press the parison against the mold surface, make close contact and complete the mold transfer and shaping.
- the mold surface is heated near the crystallization temperature of the resin, the mold contact surface of the hollow molded product does not undergo rapid crystallization, and the mirror-finished mold surface 2 Surface C is the surface of the hollow molded product As a mirror-transfer. Cooling is performed while maintaining this mirror surface, and a high-gloss hollow molded product is obtained.
- the blowing gas is not particularly limited, but air is generally used.
- the mold temperature (surface temperature) when the parison is in close contact with the mold is that the crystalline resin is heated to a temperature higher than the [crystallization temperature-10 ° C] and lower than the melting point. It is necessary to obtain a hollow molded product with excellent surface characteristics.
- This temperature is not particularly limited as long as it is the above-mentioned temperature.
- a temperature range of usually [crystallization temperature-10 ° C] to [crystallization temperature + 2] is preferable, [crystallization temperature]
- the temperature range of [10] to [crystallization temperature + 10] is more preferable.
- This molding die temperature reaches the equilibrium temperature due to the adhesion of the molten parison to the die surface, so even if the initial die temperature is below the crystallization temperature, the temperature of the parison molten resin is relatively high. In this case, a sufficiently good mold transfer is achieved, and a molded article excellent in gloss is obtained.
- the mold surface temperature is the degree of mold transfer, mold surface condition (mirror surface, textured surface, pattern, bun), type of crystalline resin, resin temperature, size of molded product, wall thickness, gas removal Select the optimal conditions for the holes, etc.
- the heating method for controlling the mold surface temperature is not particularly limited, and a method of circulating a general heating heat medium (oil), a method of electrically heating such as resistance heating and dielectric heating, and the like, may be applied to the mold body. There is a method having a heating means. Alternatively, a method of selectively heating the mold surface such as gas flame heating from the mold surface side may be used.
- the tip of the parison Before the mold is closed, the tip of the parison can be sealed with a sealing tool, and gas can be blown from the lower part of the die or parison to pre-blow the parison, or the diameter of the parison can be increased. Is as described above.
- the method for molding a hollow molded article according to the present invention comprises controlling the cooling conditions when the hollow body is cooled after shaping from a parison in the molding die and forming the hollow body. It is.
- a method of cooling the hollow body a method of lowering the temperature of the molding die, blowing a cooling medium into the hollow body under pressure, and discharging the heated medium to the outside while maintaining a predetermined internal pressure, so-called, Internal cooling or a combination of these can be used.
- cooling can be efficiently performed by flowing a cooling medium through a cooling medium jacket 4.
- the cooling medium jacket 4 When the cooling medium jacket 4 is used, the cooling medium does not exist in the jacket 4 when the mold surface is heated by the mold temperature control tube.
- the temperature of the cooling medium at the start of cooling is normally controlled to be close to the holding temperature during cooling of the molded article.
- the medium heated to the predetermined temperature is extracted and cooled by flowing a refrigerant near room temperature.
- the cooling rate after the holding time is in a range commonly used in the blow molding method, and is, for example, 50 to 5 OOtZ minutes, preferably 70 to 400 minutes.
- the cooling of the hollow body can be performed not only from the mold but also from the inside of the hollow body.
- the hollow body is controlled to the predetermined temperature during the holding at the predetermined temperature.
- temperature control from the mold is adopted until holding at the predetermined temperature, and cooling after holding is performed by using the mold, internal cooling, and equipment cost from the combination of these to secure the cooling rate. , Cooling efficiency, cost, and the like.
- the cooling medium for internal cooling is not particularly limited, but cooling air of 23 (normal room temperature) or less, preferably minus 20 or less, more preferably minus 30 ° or less is used.
- the pressure of the cooling medium to be blown is usually 2 to 10 kg Z cm 2 , and the size, thickness, and type of crystalline resin of the hollow molded product It can be appropriately selected depending on the conditions.
- control of the internal pressure can be performed using a regulating valve that regulates the discharge amount under a constant condition of the blowing pressure.
- the blowing of the cooling medium is accompanied by discharge, and unlike the circulation method, it is always cooled by a fresh low-temperature medium.
- the cooling medium blowing and discharging needles for forced internal cooling of the hollow body are not particularly limited, and in general, needles provided on the wall surface of the molding die from the viewpoint of freedom in selecting the positions of the needles.
- the needle is moved out of the mold by driving the needle advance / retreat device 7 to pierce the parison wall.
- the shape of these needles is single-tube or double-tube, etc., and the shape is such that the tip is cut horizontally, the tip is cut obliquely, and the tip is provided with the outlet in the horizontal direction in front of the tip .
- a single outlet may be provided, but it may be preferable to provide a plurality of outlets.
- the shape, shape, etc. of the molded product should be considered to determine the installation method, location, and number of units so that the cooling medium inside the hollow body can form a flow that can efficiently cool the molded product wall. It may be determined appropriately. Therefore, when a plurality of injection needles are provided depending on the shape and size of a molded article, the number of injection needles and the number of discharge needles may be different.
- the method for molding a hollow molded article of the present invention makes it possible to achieve both appearance quality and productivity by shortening the molding cycle.
- the cooling step which is a feature of the method for molding a hollow molded article of the present invention, will be described with reference to FIG. Figure 2 shows the relationship between mold temperature and cooling time.
- An example of molding 5 shows a cooling pattern proposed conventionally. That is, in the molding of a polypropylene resin having a crystallization temperature of about 125, the mold is heated to 120 and blow-molded for about 20 seconds. 3 shows a cooling temperature pattern.
- molding 1 is performed at about 100 ° In molding 3, in molding 3, it is held at about 98 for 1 minute, and then rapidly cooled by an ordinary method. That is, an example is shown in which the crystalline thermoplastic resin is held for a predetermined time in the vicinity of a temperature of about [crystallization temperature—25 ⁇ ].
- the setting of the temperature is preferably set and controlled in the vicinity of the temperature at which the crystallization speed of the resin is maximized.
- the means for forced cooling of the mold there is no particular limitation on the means for forced cooling of the mold, but it is preferable from the viewpoint of cooling efficiency to employ means different from the means for heating the mold in the preceding stage.
- the heating medium for heating when heating by circulating a heating medium for heating, after the adhesion (transfer) to the mold surface is completed, the heating medium for heating is purged with air, and then another medium for cooling is introduced. Can be adopted.
- different medium usually means that the temperature is different, and the type (oil) of the medium may be the same or different.
- a gas vent hole on the mold surface.
- a gas vent hole having a diameter of about 0.2 to 0.5 ⁇ has been adopted, but the diameter of the gas vent hole is not more than ⁇ ⁇ . If this diameter exceeds 100 ⁇ , resin whiskers may be generated on the surface of the molded product.
- the number of vent holes shall be 2 O mm or less as the pitch of vent holes.
- the molded product surface may generate force and dust due to poor gas release.
- the depth of the gas vent hole is usually 0.2 to 0.5 mm, and can be formed by, for example, electroforming.
- mold surface conditions There are various types of mold surface conditions, and the surface is processed according to the purpose. For example, there is a mirror finish of 0.5 S or less, graining, patterning, character / graphic processing, or a combination thereof.
- the hollow molded article may be: A known molded article that can be molded by a hollow molding method can be molded. That is, the resin layer may be a single layer or a multilayer, and the structure of the hollow portion is optional, and may be a structure having a plurality of hollow portions as necessary.
- the crystalline thermoplastic resin used in the present invention is not particularly limited, and examples thereof include a polyolefin resin, a polyamide resin, and a polyester resin syndiotactic polystyrene.
- examples of the polyolefin resin include ⁇ -olefin homopolymers such as ethylene; propylene; butene-11; 3-methylbutene-11; 3-methynolepentene-11; Alternatively, a copolymer of these with another copolymerizable unsaturated monomer may, for example, be mentioned.
- Typical examples are high-density, medium-density, low-density polyethylene, polyethylene resins such as linear low-density polyethylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, and syndiotactic polypropylene. And polypropylene polymers such as isotactic polypropylene, propylene-ethylene random copolymer or block copolymer, and poly4-methylenpentene-11.
- polyamide resins include those obtained by ring-opening polymerization of cycloaliphatic ratatams such as 6-nylon and 12-nylon, 6,6-nylon; 6,10-nylon; 6,12-nylon, etc.
- Examples thereof include those obtained by condensation polymerization of amino acids.
- polyester-based resin examples include those obtained by condensation polymerization of an aromatic dicarboxylic acid and an alkylenedicarboxylic acid.
- examples include phthalate, polybutylene terephthalate, and polyethylene naphthalate.
- examples of the polyacetal resin include homopolymer polymethylene and formaldehyde-ethylene oxide copolymer obtained from trioxane and ethylene oxide.
- thermoplastic resins may be used alone or in combination of two or more. Further, other low-crystalline resins, non-crystalline resins, resins such as elastomers described below, inorganic fillers, and various additives may be added as necessary.
- thermoplastic resins polypropylene-based resins and high-density polyethylene resins such as polypropylene homopolymer, block copolymers of propylene and other olefins, random copolymers and mixtures thereof are preferred, Further, it may be a polypropylene resin or a high-density polyethylene containing an acid-modified polyolefin resin modified with an unsaturated carboxylic acid or a derivative thereof.
- melt index MI (according to JIS K7210, 230, 2.16 kg load) Force 0.1 to 2.0 gZl 0 min, preferably 0.2 to 1. OgZl O min Those having the above range are preferably used in terms of blow moldability such as resistance to drawdown.
- MI compliant with JIS K7210, 190 ⁇ , 2.16 kg load
- MI is 0.001 to lgZlO, preferably 0.01 to 0.5 g for the polypropylene resin. Moldability and the like can be improved by adding high-density polyethylene of / 10 minutes in the range of 0 to 30% by weight in the molded product.
- elastomers such as ethylene-propylene copolymer elastomers and ethylene-propylene copolymer elastomers having a viscosity of ML-12 (ML ⁇ IOO ⁇ ) of 10-20: 0-20 weight per molded article You can also add 0 .
- the crystallization temperature of the crystalline thermoplastic resin in the specification of the present application refers to the crystallization temperature of the crystalline thermoplastic resin used alone, and also includes a nucleating agent. Means the crystallization temperature when it is actually used as a raw material resin for molding, such as when it is used to improve the crystallinity or when it is mixed with other thermoplastic resins, talc, or other fillers. Is what you do.
- the crystallization temperature of the crystalline thermoplastic resin can be measured according to JIS 712.
- a Perkin-Elmer DSC-7 a polypropylene resin which is a crystalline resin is heated at a heating rate of 10 min. It is obtained as the peak temperature when cooling at the temperature drop rate of tZ.
- an inorganic filler is added in an amount of 0 to 50% by weight, preferably 5 to 50% by weight, in order to improve rigidity, strength, heat resistance, etc. of the hollow molded article, and to improve cooling characteristics. It can be added in the range of 30 weights 0 / o.
- the inorganic filler talc, My force, calcium carbonate, glass Sl Milloff Ibar, carbon fiber, magnesium sulfate fiber, potassium titanate ⁇ , titanium oxide fiber, magnesium oxysulfate fiber, or organic filler, organic filler, organic Fibers and the like can be exemplified. Among them, talc, my strength, and glass mm are preferably used.
- an antioxidant an antistatic agent, an ultraviolet absorber, a light stabilizer, a flame retardant, a flame retardant auxiliary, a pigment, a dispersant, a nucleating agent, and the like can be added.
- a resin composition containing talc in an amount of 5 to 30% by weight, particularly 10 to 25% by weight is used as a raw material resin, the appearance can be secured and the cooling efficiency can be improved.
- a resin containing another resin may be used if necessary.
- the hollow molded article may be a single layer or a multilayer.
- a layer of crystalline thermoplastic resin a multi-layered structure of an amorphous resin, and those resins having different viscosities and crystallinities, and differing in the presence or absence of a coloring agent, an additive, and a filler. It may be a multilayer made of resin.
- the hollow molded article obtained by the hollow molding method of the present invention has the characteristics of a crystalline resin. On the other hand, due to poor appearance such as glossiness, sink mark and warpage, it is possible to use polypropylene resin in fields where only amorphous resin is used.
- a hollow molded article was molded under the following conditions.
- H-PP polypropylene homopolymer [Idemitsu Petrochemical Co., Ltd., I DEMI TSU PP, E—105 GM, MI: 0.6 g / l 0 min (230, 2.16 kg load) , Crystallization temperature: 1 26.8]
- B—PP Propylene block copolymer [Idemitsu Petrochemical Co., Ltd., I DEM I TSU PP, E—185G, MI: 0.4 g / l 0 min (230, 2.16 kg load ), Crystallization temperature: 126.3]
- Mold surface ⁇ ⁇ ⁇ ⁇ Surface 0.2 S mirror finish, diameter: 50 m, pitch: 5 mm, with vent holes.
- Molding temperature cylinder: 230-190, cross head: 190 t, die: 190, resin temperature: 220.
- Table 1 shows the evaluation results.
- Table 1 shows that it is difficult to eliminate sink marks when normal cooling conditions are used.
- the hollow molded article molded by the method for molding a hollow article of the present invention has good mold transferability and shows a high gloss of 90% or more even though it is a hollow molded article.
- Takamitsuzawa's hollow molded products are used, there is no product appearance quality defects such as sink marks and warpage, and the product has excellent productivity, and can be finished without secondary processing such as polishing and painting. It can be a product.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00960991A EP1142689B1 (en) | 1999-09-21 | 2000-09-13 | Molding method for blow molded product |
KR1020017006359A KR20010093096A (ko) | 1999-09-21 | 2000-09-13 | 중공성형품의 성형방법 |
US09/831,363 US6746643B1 (en) | 1999-09-21 | 2000-09-13 | Molding method for blow molded product |
DE60019554T DE60019554T2 (de) | 1999-09-21 | 2000-09-13 | Verfahren zum formen von blasgeformten gegenständen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP26650999A JP2001088200A (ja) | 1999-09-21 | 1999-09-21 | 中空成形品の成形方法 |
JP11/266509 | 1999-09-21 |
Publications (1)
Publication Number | Publication Date |
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WO2001021380A1 true WO2001021380A1 (fr) | 2001-03-29 |
Family
ID=17431907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/006272 WO2001021380A1 (fr) | 1999-09-21 | 2000-09-13 | Procede de moulage pour obtenir un produit moule par soufflage |
Country Status (8)
Country | Link |
---|---|
US (1) | US6746643B1 (ja) |
EP (1) | EP1142689B1 (ja) |
JP (1) | JP2001088200A (ja) |
KR (1) | KR20010093096A (ja) |
CN (1) | CN1178780C (ja) |
DE (1) | DE60019554T2 (ja) |
TW (1) | TW482718B (ja) |
WO (1) | WO2001021380A1 (ja) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2836893B1 (fr) * | 2002-03-08 | 2004-07-02 | Sidel Sa | Recipient en matiere thermoplastique pour produit devant etre protege de la lumiere |
JP4266609B2 (ja) * | 2002-10-08 | 2009-05-20 | 株式会社プライムポリマー | 成形方法および樹脂成形体 |
KR100724803B1 (ko) * | 2006-01-06 | 2007-06-04 | 동진전자 주식회사 | 중공 성형품의 성형방법 및 성형장치 |
US20090200698A1 (en) | 2006-06-12 | 2009-08-13 | Husky Injection Molding Systems Ltd. | Method and apparatus for post-mold cooling a molded article |
US7421310B2 (en) * | 2006-06-12 | 2008-09-02 | Husky Injection Molding Systems Ltd. | Method and apparatus for controlling cooling rates during post-mold cooling of a molded article |
WO2010009901A2 (de) * | 2008-07-25 | 2010-01-28 | Creative Balloons Maschinenbau Gmbh & Co. Kg | Vorrichtung und verfahren zur herstellung von ballon- oder hohlkörpern aus einem schlauchförmigen rohling oder extrudat durch blasformung |
BRPI1011444A2 (pt) * | 2009-05-05 | 2016-03-15 | Echotect B V | processo para a fabricacao de uma composicao compreendendo pet reciclado mediante resfriamento controlado |
US9044880B2 (en) | 2009-08-04 | 2015-06-02 | Mitsubishi Gas Chemical Company, Inc. | Method for producing container |
DE102010006898A1 (de) * | 2010-01-28 | 2011-08-18 | KHS Corpoplast GmbH, 22145 | Verfahren und Vorrichtung zur Blasformung von Behältern |
US9266259B2 (en) * | 2011-12-23 | 2016-02-23 | Kyoraku Co. Ltd. | Method of forming hollow blow-molded foam and such hollow blow-molded foam |
JP5904442B2 (ja) * | 2012-05-31 | 2016-04-13 | 株式会社吉野工業所 | 高密度ポリエチレン樹脂製容器の成形方法 |
JP2013248797A (ja) * | 2012-05-31 | 2013-12-12 | Yoshino Kogyosho Co Ltd | 高密度ポリエチレン樹脂製容器及びその成形方法 |
JP2015085669A (ja) * | 2013-11-01 | 2015-05-07 | トヨタ自動車株式会社 | 樹脂成形品の製造方法およびその製造装置 |
DE102014202357A1 (de) * | 2014-02-10 | 2015-08-13 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Herstellung eines Verbundbauteils und Verbundbauteil |
BR112017028189A2 (pt) * | 2015-06-26 | 2018-09-04 | Procter & Gamble | recipiente lustroso |
CN105346056B (zh) * | 2015-11-27 | 2017-06-09 | 苏州同大机械有限公司 | 中空塑料吹塑成型机用的料坯夹住机械手 |
CN106346753B (zh) * | 2016-08-31 | 2019-10-29 | 岱纳包装(太仓)有限公司 | 吹塑全自动化生产线 |
CN106239868B (zh) * | 2016-08-31 | 2018-09-18 | 岱纳包装(天津)有限公司 | 一种挤出吹塑二次定型系统 |
JP7011819B2 (ja) * | 2018-04-19 | 2022-01-27 | みのる化成株式会社 | ブロー成形方法および成形品製造装置 |
JP2024035536A (ja) * | 2022-09-02 | 2024-03-14 | Toto株式会社 | 耐傷性及び耐久性に優れた樹脂成型部材 |
JP2024035535A (ja) * | 2022-09-02 | 2024-03-14 | Toto株式会社 | 耐傷性及び耐久性に優れた樹脂成型部材 |
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JPS57212031A (en) * | 1981-06-25 | 1982-12-27 | Asahi Chem Ind Co Ltd | Production of holow molded article excellent in surface appearance |
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-
2000
- 2000-09-13 US US09/831,363 patent/US6746643B1/en not_active Expired - Fee Related
- 2000-09-13 KR KR1020017006359A patent/KR20010093096A/ko not_active Application Discontinuation
- 2000-09-13 EP EP00960991A patent/EP1142689B1/en not_active Expired - Lifetime
- 2000-09-13 WO PCT/JP2000/006272 patent/WO2001021380A1/ja active IP Right Grant
- 2000-09-13 CN CNB008020132A patent/CN1178780C/zh not_active Expired - Fee Related
- 2000-09-13 DE DE60019554T patent/DE60019554T2/de not_active Expired - Fee Related
- 2000-09-15 TW TW089118991A patent/TW482718B/zh not_active IP Right Cessation
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JPS57212031A (en) * | 1981-06-25 | 1982-12-27 | Asahi Chem Ind Co Ltd | Production of holow molded article excellent in surface appearance |
JPH0970880A (ja) * | 1995-09-08 | 1997-03-18 | Ube Ind Ltd | 中空成形品のブロー成形方法および装置 |
JPH1016042A (ja) * | 1996-06-28 | 1998-01-20 | Japan Synthetic Rubber Co Ltd | ブロー成形品、及び成形方法 |
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Also Published As
Publication number | Publication date |
---|---|
JP2001088200A (ja) | 2001-04-03 |
US6746643B1 (en) | 2004-06-08 |
EP1142689B1 (en) | 2005-04-20 |
EP1142689A4 (en) | 2002-07-31 |
DE60019554T2 (de) | 2005-09-29 |
TW482718B (en) | 2002-04-11 |
KR20010093096A (ko) | 2001-10-27 |
DE60019554D1 (de) | 2005-05-25 |
CN1178780C (zh) | 2004-12-08 |
CN1322163A (zh) | 2001-11-14 |
EP1142689A1 (en) | 2001-10-10 |
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