WO1990011176A1 - Blow moulding multiple walled articles - Google Patents
Blow moulding multiple walled articles Download PDFInfo
- Publication number
- WO1990011176A1 WO1990011176A1 PCT/AU1990/000117 AU9000117W WO9011176A1 WO 1990011176 A1 WO1990011176 A1 WO 1990011176A1 AU 9000117 W AU9000117 W AU 9000117W WO 9011176 A1 WO9011176 A1 WO 9011176A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- inner vessel
- fluid pressure
- mould
- parison
- vessel
- Prior art date
Links
- 238000000071 blow moulding Methods 0.000 title claims abstract description 29
- 239000012530 fluid Substances 0.000 claims abstract description 37
- 238000001125 extrusion Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 15
- 210000003739 neck Anatomy 0.000 description 47
- 239000011324 bead Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 235000013361 beverage Nutrition 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B29C49/0031—Making articles having hollow walls
-
- 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
- B29C49/06905—Using combined techniques for making the preform
- B29C49/0691—Using combined techniques for making the preform using sheet like material, e.g. sheet blow-moulding from joined sheets
-
- 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
- B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
-
- 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
-
- 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
- B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
- B29C2049/2008—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements inside 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
- B29C49/02—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
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/7418—Suitcases
Definitions
- double walled t h ermoplast i cs containers such as insulate d vesse l s having an internal wall defining a food or ⁇ *" retaining cavity an d spaced from an external wall, often with an insulating medium in the cavity between the wa ll s, a num b er o f manufacturing steps h ave b een required.
- the inner and outer walls were lded as separate articles, the inner wall was inserted into the outer wall, and the margins of the walls were sealed together, often with a capping ring.
- SUBSTITUTE SHEET the space between the inner and outer vessels and the interior of the inner vessel is advantageously substantially equal during the blow moulding step.
- the same source of pressure medium is provided for said space and said interior in which case means may be provided in the pressure medium conduit for compensating for differences in volume between said space and said interior in order to apply the desired pressure thereto.
- the volume compensation means may be in the form of pressure regulating means and/or variable volume means.
- the space defined between the inner vessel and outer vessel is used to insulate the inner vessel. This may be achieved by drawing a vacuum in the said space and sealing it upon removal of the respective fluid pressure application means. Alternatively, an insulation medium such as a foamed polyurethane may be injected into the space.
- the space between the inner vessel and outer vessel is itself used as a separate storage space for beverages etc. or a removable heat exchange medium such as iced water.
- the said space can be provided with its own neck and stopper or cap to allow access therein.
- the annular end portion of the parison which extends around the or each neck of the inner vessel will typically seal therearound by shrinking thereon. If the compositions of the inner and outer vessels are compatible, the closing of the mould segments may cause the portion of the parison lying closely around the neck of the inner vessel to become welded thereto to form a common neck of the hollow multiple walled article. Alternatively, the necks of the inner and outer vessels may be adhesively bonded together.
- Protruding ridges or beads as discussed above in relation to the neck of the inner vessel may also be provided on the body of the inner vessel to assist in locating it within the outer vessel.
- the closing of the mould segments will generally cause the parison to lie or become welded adjacent the ridges or beads, and the blow moulding step will produce hollow regions therearound. 7
- a blow pin for blow moulding the outer vessel enters the mould at an end portion remote from where the end portion of the parison will be moulded around the neck of the inner vessel, in which case a small aperture will typically remain in the bottom of the finished article.
- the blow pin may enter the split mould to one side of the portion which moulds the outer vessel around the neck of the inner vessel. ⁇ repeat each case the remaining aperture may be used to insert an insulating material such as polyurethane foam or to draw a vacuum in the space defined between the inner and outer vessels.
- the fluid pressure medium will generally comprise air, but other fluids may be appropriate. For instance it may be appropriate to inject a settable liquid as the blowing medium, which on setting may act as an insulator for the hollow double walled article.
- the inner vessel may be placed under an extrusion port and the mouldable sheet extrusion extruded around or adjacent the inner vessel. Alternatively it may be appropriate to extrude an appropriate length of mouldable sheet extrusion and then to juxtapose the inner vessel within or between portions of the mouldable sheet extrusion. This may be achieved by manoeuvring the inner vessel into place within or between the mouldable sheet extrusion.
- An alternative extruder uses travelling nippers or scissors which cut the top of an appropriate length of extrusion and convey it away from the extrusion port, for instance, down towards a moulding station disposed below the parison extrusion area to be juxtaposed with the inner vessel.
- a travelling parison arrangement is particularly convenient as it may allow a further length of mouldable sheet extrusion to be prepared while a first length is being sealed with the mould segments and blow moulded.
- the air is exhausted in such a manner that the respective pressures within the inner vessel and between the inner and outer vessels are maintained substantially equal to each other to prevent distortion or rupture of the inner vessel.
- the pressure equalization means comprises a source of pressurized filtered air (not depicted ) connected to an air line 94.
- T h e air line 94 has an adjustable regulator 96 upstream of a solenoid two way valve 98 having an exhaust port 100 and downstream line 102.
- the downstream line 102 branches into an inner vessel line 104 leading to first blow pin 74 and an outer vessel line 106 leading to the second blow pin 84.
- Inner vessel line 104 and outer vessel line 106 each have a respective flow control valve 108, 110 intermediate its blow pin and its connection to the air line 94.
- the flow control valves, two way valve and regulator are shown schematically in this drawing.
- the flow , control valves 108, 110 each serve to independently regulate air flow in both the blowing and exhaust directions.
- variable volume chamber 112 associated with the inner vessel blow pin 74 is relatively small as its piston 116 is near the end of its stroke and is disposed adjacent the variable volume chamber's connection 118 with air line 104.
- variable volume chamber 114 to metre a smaller volume of air to be blown into the relatively small space 86 defined between the inner vessel and moulding surfaces, has its piston 120 set to define a relatively large volume.
- the respective adjustments to suit a particular common air input pressure can be set empirically or by mathematical calculation of the differences in volume of air to be blown.
- This arrangement of pressure equalization means is particularly convenient as it allows air pressure within the inner vessel and outer vessel to be equalized yet uses a single source of air pressure.
- the apparatus can be adapted to blow mould hollow multiple walled articles of different volumes and configurations.
- the aperture left in the outer wall after the withdrawal of the blow pipe 84 may be used to apply fluid pressure medium in addition to fluid pressure medium applied to the innermost vessel 72 through its neck 76, during the blow moulding of an outermost vessel.
- this further application to mould a multiple wall article it may be particularly convenient to provide the blow pin for blow moulding the outermost vessel at the remote end relative to the neck of the innermost and intermediate vessels.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019910701163A KR920700885A (en) | 1989-03-23 | 1990-03-22 | Blow Molded Multiwall Objects |
CA002049968A CA2049968A1 (en) | 1989-03-23 | 1990-03-22 | Blow moulding multiple walled articles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPJ334389 | 1989-03-23 | ||
AUPJ3343 | 1989-03-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990011176A1 true WO1990011176A1 (en) | 1990-10-04 |
Family
ID=3773802
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1990/000117 WO1990011176A1 (en) | 1989-03-23 | 1990-03-22 | Blow moulding multiple walled articles |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0509987A4 (en) |
JP (1) | JPH04505592A (en) |
KR (1) | KR920700885A (en) |
CA (1) | CA2049968A1 (en) |
GR (1) | GR900100218A (en) |
NZ (1) | NZ232997A (en) |
WO (1) | WO1990011176A1 (en) |
ZA (1) | ZA902267B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2768361A1 (en) * | 1997-09-17 | 1999-03-19 | Manuplast | Equipment blow molding envelope containing object along its interior |
DE19944579A1 (en) * | 1999-09-17 | 2001-03-22 | Ti Group Automotive Systems Te | Plastic fuel tank production method, comprises positioning balloon-shaped preform inside second, cylindrical preform within blow mould, molding first preform to shape and then expanding second preform |
EP3098055A1 (en) * | 2015-05-27 | 2016-11-30 | Inergy Automotive Systems Research (Société Anonyme) | Method for manufacturing a hollow body, in particular a fuel tank |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3113831A (en) * | 1961-01-26 | 1963-12-10 | Phillips Petroleum Co | Method of forming a double-walled container |
GB1125609A (en) * | 1964-11-14 | 1968-08-28 | Galicia Plasticos | Fishing floats and a process of making the same |
US4828786A (en) * | 1986-05-28 | 1989-05-09 | John D. Brush & Co., Inc. | Draped parison blow molding |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1546033A (en) * | 1966-11-23 | 1968-11-15 | Shell Int Research | A method of producing a plastic container having a recessed portion and a plastic container thus produced |
DE3709426A1 (en) * | 1987-03-21 | 1988-09-29 | Stiebel Eltron Gmbh & Co Kg | Process for producing a hot-water tank and hot-water tank |
-
1990
- 1990-03-20 NZ NZ232997A patent/NZ232997A/en unknown
- 1990-03-22 CA CA002049968A patent/CA2049968A1/en not_active Abandoned
- 1990-03-22 GR GR90100218A patent/GR900100218A/en unknown
- 1990-03-22 WO PCT/AU1990/000117 patent/WO1990011176A1/en not_active Application Discontinuation
- 1990-03-22 KR KR1019910701163A patent/KR920700885A/en not_active Application Discontinuation
- 1990-03-22 JP JP2504854A patent/JPH04505592A/en active Pending
- 1990-03-22 EP EP19900904733 patent/EP0509987A4/en not_active Withdrawn
- 1990-03-23 ZA ZA902267A patent/ZA902267B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3113831A (en) * | 1961-01-26 | 1963-12-10 | Phillips Petroleum Co | Method of forming a double-walled container |
GB1125609A (en) * | 1964-11-14 | 1968-08-28 | Galicia Plasticos | Fishing floats and a process of making the same |
US4828786A (en) * | 1986-05-28 | 1989-05-09 | John D. Brush & Co., Inc. | Draped parison blow molding |
Non-Patent Citations (1)
Title |
---|
See also references of EP0509987A4 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2768361A1 (en) * | 1997-09-17 | 1999-03-19 | Manuplast | Equipment blow molding envelope containing object along its interior |
EP0925906A1 (en) * | 1997-09-17 | 1999-06-30 | Manuplast | Device for blow moulding of parts which contain a body inside of a envelope |
DE19944579A1 (en) * | 1999-09-17 | 2001-03-22 | Ti Group Automotive Systems Te | Plastic fuel tank production method, comprises positioning balloon-shaped preform inside second, cylindrical preform within blow mould, molding first preform to shape and then expanding second preform |
DE19944579B4 (en) * | 1999-09-17 | 2011-01-05 | Ti Automotive Technology Center Gmbh | Process for producing a plastic container |
EP3098055A1 (en) * | 2015-05-27 | 2016-11-30 | Inergy Automotive Systems Research (Société Anonyme) | Method for manufacturing a hollow body, in particular a fuel tank |
CN106182699A (en) * | 2015-05-27 | 2016-12-07 | 全耐塑料高级创新研究公司 | Method for producing a hollow body, in particular a fuel tank |
EP3098055B1 (en) | 2015-05-27 | 2017-08-23 | Inergy Automotive Systems Research (Société Anonyme) | Method for manufacturing a hollow body, in particular a fuel tank |
US10189201B2 (en) | 2015-05-27 | 2019-01-29 | Plastic Omnium Advanced Innovation And Research | Method for manufacturing a hollow body, in particular a fuel tank |
CN106182699B (en) * | 2015-05-27 | 2020-07-10 | 全耐塑料高级创新研究公司 | Method for producing a hollow body, in particular a fuel tank |
Also Published As
Publication number | Publication date |
---|---|
EP0509987A1 (en) | 1992-10-28 |
ZA902267B (en) | 1990-12-28 |
NZ232997A (en) | 1991-12-23 |
GR900100218A (en) | 1991-07-31 |
CA2049968A1 (en) | 1990-09-24 |
EP0509987A4 (en) | 1993-06-30 |
KR920700885A (en) | 1992-08-10 |
JPH04505592A (en) | 1992-10-01 |
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