CN1323255A - Method and apparatus for blow moulding - Google Patents

Method and apparatus for blow moulding Download PDF

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Publication number
CN1323255A
CN1323255A CN99812029A CN99812029A CN1323255A CN 1323255 A CN1323255 A CN 1323255A CN 99812029 A CN99812029 A CN 99812029A CN 99812029 A CN99812029 A CN 99812029A CN 1323255 A CN1323255 A CN 1323255A
Authority
CN
China
Prior art keywords
chamber
regulating
regulating piston
volume
equipment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN99812029A
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Chinese (zh)
Inventor
卡里·基里亚瓦伊宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Naiksetorom Holding S A
Mindset Holding SA
Original Assignee
Naiksetorom Holding S A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Naiksetorom Holding S A filed Critical Naiksetorom Holding S A
Publication of CN1323255A publication Critical patent/CN1323255A/en
Pending legal-status Critical Current

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    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/33—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles with parts rotatable relative to each other
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/325—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles being adjustable, i.e. having adjustable exit sections
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—Pressure
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B29C2948/926—Flow or feed rate
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone
    • 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
    • B29C2949/00—Indexing scheme relating to 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
    • 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
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons

Abstract

The invention relates to a method and apparatus for blow moulding. In the blow moulding apparatus, an extruder (1) feeds material into a connecting channel (9) to form an annular parison. The annular parison is fed into a mould and air is blown into the parison. In the connecting channel (9) there is a regulating cavity (10) with a variable volume, the volume being regulated by moving a regulating piston (11) of the apparatus back and forth. When increasing the volume of the regulating cavity (10), more material is left in said regulating cavity (10), the exit flow decreases and thus the wall of an article becomes slightly thinner. When contracting the regulating cavity (10), more material is extruded from the apparatus, and the wall of the article to be manufactured becomes thicker.

Description

Blow molding method and equipment
The present invention relates to a kind of blow molding method, method forms a circular material blank thus, and circular material blank infeeds a pattern and air is blown in the blank.
The invention still further relates to a kind of blow molding apparatus, comprise an extruder that forms a circular material blank, be used for circular material blank is infeeded the device of a pattern and the device that air is blown into blank.
In the blowing mould process, the article of manufacturing hollow are bottle for example.When blowing mould, circular material blank infeeds in the pattern and air is blown into the article that have pattern to form with its outer surface in the blank.The wall thickness of article is by the width decision of a mould openings in the blow molding apparatus.If when the wall thickness of article need change, can a conical objects be set together with mould on the different section of article, this object moves forward and backward the width that can change mould outlet.The adjusting of mould openings width influences the counter-pressure of material in equipment, thus by pressure oscillation can disturbance equipment optimum operation.Described conical objects can not be used for an arcuate die, thereby in order to keep pattern preferably to fill pattern in vertical direction, the extruder of equipment also must remain on vertical direction, and the processing of extruder, dismounting and cleaning are just very difficult like this.
The purpose of this invention is to provide a kind of method and apparatus, to avoid above shortcoming.
Method of the present invention is characterised in that, material is infeeded in the interface channel to form circular material blank, and in interface channel, there is one to regulate the chamber, the volume adjustment of regulating the chamber becomes when increasing the volume of regulating the chamber, more material is stayed and is regulated in the chamber, and rate of discharge reduces like this, and when reducing to regulate the volume in chamber, more material squeezes out equipment, and rate of discharge increases.
In addition, equipment of the present invention is characterised in that, extruder comprises an interface channel, material is arranged to by the feedway feed path, and in interface channel, there is one to regulate the chamber, extruder is provided with a regulating piston, piston is arranged to move back and forth to regulate the volume in chamber, like this when regulating piston being moved apart the adjusting chamber, the volume in adjusting chamber increases and more material is stayed in the adjusting chamber and rate of discharge reduces, and when when the adjusting chamber presses regulating piston, the volume of regulating the chamber reduces, and so more material squeezes out equipment.
Basic ideas of the present invention are to supply with material by the extruder of an interface channel equipment of blow molding apparatus, and interface channel is provided with the adjusting chamber of a volume-variation, can volume adjusted by the regulating piston of the equipment of moving forward and backward.When increasing the volume of regulating the chamber in the blowing mould process, more material is stayed in the adjusting chamber and rate of discharge reduces.When pressing regulating piston when regulating the chamber to shrink to regulating the chamber, piston is simultaneously with more material dispensing apparatus, and cuts out mouthful flow and increase.When piston was static substantially, rate of discharge equaled the average discharge by the mould openings decision substantially.The thinking of a preferred embodiment is that the control device of regulating piston is arranged in the structure of blow molding apparatus.The thinking of another preferred embodiment is that the mould of equipment is arranged to arc.The thinking of the 3rd preferred embodiment is that regulating piston rotates in processing procedure.
The invention has the advantages that the wall thickness profile of the article that can fast, simply and effectively regulate rate of discharge and will make, and in the extruder of equipment, can not produce pressure oscillation.Be arranged in the extruder structure by control device, durable and compact structure can be provided regulating piston.The present invention can also adopt an arcuate die in equipment, pattern can be positioned at vertical direction and extruder still is positioned at horizontal direction like this, thereby can carry out processing, dismounting and the cleaning of extruder easily.By rotating regulating piston, the circumference orientation of material can be improved in the terminal stage of extruding, and wants the radial width of the article of blowing mould also can be adjusted.
Describe the present invention below with reference to the accompanying drawings in detail, wherein:
Fig. 1 illustrates a schematic side elevational cutaway view of present device, and
Fig. 2 a and 2b illustrate the elevational cross-sectional view of the variation scheme of the regulating piston that is used for Fig. 1 equipment.
Fig. 1 illustrates a side view cutaway drawing of blow molding apparatus of the present invention.Described equipment comprises an extruder 1 and a mould 2 that is connected on extruder one end.Utilize this equipment and materials to infeed in the pattern, and air is blown into wherein in a kind of known mode, forms a shape by the pattern decision with wall with article as a kind of circular material blank.In Fig. 1, pattern is represented by dotted lines.Extruder 1 comprises an external stator 3 and an inner stator 4, and an outer rotor 5 is arranged between it, and side has an internal rotor 6 within it.Between outer rotor 5 and internal rotor 6, a central stator 7 can also be arranged.Rotor and/or stator adopt helicla flute, and when rotor 5 and 6 rotates, the material of supplying with between it are further supplied with forward.For the sake of clarity, the not shown in the accompanying drawings device between rotor and stator, supplied with and the tumbler of rotor of being used for.Best, rotor 5 and 6 and stator 3,4 and 7 on its surface of facing, form taper at least, make between rotor and stator to form to have the supply gap of assembling conical in shape.Like this, the structure of equipment is short relatively, and without any need for the independent bracing or strutting arrangement of stator.On the inboard of inner stator 4, an axle 8 is set also.Material flows to an interface channel 9 as the supply gap of assembling taper from shape.The end of interface channel 9 forms one and regulates chamber 10.Be provided with a regulating piston 11 in the outside of axle 8.By extruder 1 move axially regulating piston 11, can regulate the volume in chamber 10.
The wall thickness of the article of making mainly contains the size decision of the die orifice 12 of mould 2.By the regulating piston 11 that in Fig. 1, moves right, can increase the volume of regulating the chamber.Like this, accumulate in by the material of extruder 1 extruding and regulate in the chamber, and the air stream of preferably supplying with simultaneously by suitable adjusting simultaneously reduces the amount of the material of outflow, make the wall attenuation of the article that will push like this.When regulating piston in Fig. 1 11 is moved to the left, regulating chamber 10 shortens, the material that while regulating piston 11 will be regulated in the chamber 10 squeezes out equipment, thereby and the air stream of preferably supplying with simultaneously by suitable adjusting simultaneously increases the amount of the material of outflow, so the interim thickening of the wall of the article that will make.Regulating piston 11 can move very fast, thereby the thickness profile of the wall of the article that will make can very fast adjusting in processing procedure.
In manufacture process, air is blown in the article in known manner by an air duct.For the sake of clarity, except not shown other air fed device in the air duct 13 external accompanying drawings.Mould 2 can have an arc, to change the flow direction of material.Best, the flow direction of material rotates 90 °, thus pattern can be in vertical direction and its fill direction from the top to the bottom, and extruder 1 can be positioned at horizontal direction.
Regulating piston 11 can move by front and back hydraulic pressure.Like this, when regulating piston 11 needed to move backward promptly to Fig. 1 right-hand mobile, pressure fluid was supplied with first pressurized fluid chamber 15 by a pressure fluid channel 14.Pressure fluid is discharged from second pressurized fluid chamber 17 by second pressure fluid channel 16 simultaneously.Therefore, when regulating piston 11 need move forward that promptly left moves in Fig. 1, pressure fluid reversed in opposite direction.The feedway of pressure fluid and control device are technology well known in the art, for the sake of clarity just no longer illustrate in the accompanying drawings.By the control device of regulating piston 11 is packed in the mode shown in Fig. 1, can produce durable and compact structure for the inner stator in the structure of blow molding apparatus 4.
Extruder 1 adopts whirligig 18 to rotate regulating piston 11.Whirligig 18 can comprise for example motor that utilizes an axle to rotate a gear, thereby regulating piston 11 adopts the groove that cooperates with gear, and can rotate regulating piston 11 when gear rotates.In addition, any known other schemes can be used as the whirligig 18 of regulating piston 11.By rotating regulating piston 11, the circumferential orientation of the material that push can effectively increase, and therefore can be implemented in the effect of locating on the material in final compression stage.
In tapered squeezing machine 1, its all stator 3,4 and 7 and the thickness evenness thermal conditioning easily of the material walls that will push.That each stator 3,4 and 7 can adopt is several, at least three heating members 19 resistance for example, and they are distributed on the concentrically ringed circumference equally spacedly.Heating member 19 can be regulated the temperature of each stator segment and can utilize material coefficient of thermal expansion to regulate the shape of stator.The center of stator can be regulated with very effective and accurate way like this.
In Fig. 2 a and 2b, regulating piston 11 has an asymmetrical cross section.In Fig. 2 a, by rotating regulating piston, the position can move to adjusting chamber 10 and be in its maximum, and promptly the wall thickness change of article can be regulated at circumferencial direction.Utilize the regulating piston 11 of Fig. 2 b, wall is thinner in some position, and this thin structure is formed in the thicker structure of regulating piston 11.Usually, when regulating piston 11 moves forward and backward, have difform regulating piston and also thickness profile is had different influences.Regulating piston 11 can make and can replace, thereby can use different types of regulating piston 11 when making different article.
Above specification and accompanying drawing are just schematically represented thinking of the present invention.Can make amendment to the present invention within the scope of the claims.Can utilize screw thread that regulating piston 11 is used for extruder 1, thereby regulating piston 11 can move forward and backward by rotation, promptly move forward and backward and rotate and to implement with a device.In addition, the rotation direction of regulating piston 11 can change consistently, and promptly regulating piston 11 can rotate in the mode of vibration.Oscillation distances can suitably be selected and it can also be shorter than a complete circulation.

Claims (15)

1. blow molding method, method forms a circular material blank thus, circular material blank infeeds in the pattern and air is blown in the blank, it is characterized in that, material is infeeded in the interface channel (9) to form circular material blank, and in interface channel (9), there is one to regulate chamber (10), the volume adjustment of regulating chamber (10) becomes when increasing the volume of regulating chamber (10), more material is stayed and is regulated in the chamber (10), rate of discharge reduces like this, and when reducing to regulate the volume in chamber (10), more material squeezes out equipment, and rate of discharge increases.
2. method according to claim 1, it is characterized in that, utilize a regulating piston (11) to regulate the volume in chamber (10) by moving forward and backward regulating piston (11), when reducing to regulate the volume in chamber (10), press regulating piston (11) to regulating chamber (10), when increasing the volume of regulating chamber (10), deviate from the volume of regulating the mobile regulating piston in chamber (10) (11).
3. method according to claim 1 and 2 is characterized in that, the pessum blank changes the flow direction of material by an arcuate die (2).
4. method according to claim 3 is characterized in that, the flow direction of material changes about 90 ° in mould (2).
5. according to each described method in the claim 2 to 4, it is characterized in that, in the blowing mould process, rotate regulating piston (11).
6. method according to claim 5 is characterized in that, regulating piston (11) has strict asymmetrical cross section, and when rotating regulating piston (11), the wall thickness change of article is regulated in circumferencial direction.
7. according to the described method of above-mentioned each claim, it is characterized in that the device that material is infeeded in the interface channel (9) is taper substantially.
8. blow molding apparatus, comprise an extruder (1) that forms a circular material blank, with circular material blank infeed one in the pattern feedway and air is blown into device (13) in the blank, it is characterized in that, extruder (1) comprises an interface channel (9), material is arranged to by the feedway feed path, and in interface channel, there is one to regulate chamber (10), extruder (1) is provided with a regulating piston (11), piston is arranged to move back and forth to regulate the volume in chamber (10), like this when regulating piston (11) being moved apart adjusting chamber (10), the volume in adjusting chamber (10) increases and more material is stayed in the adjusting chamber (10) and rate of discharge reduces, and when when adjusting chamber (10) presses regulating piston (11), the volume of regulating chamber (10) reduces, and so more material squeezes out equipment.
9. equipment according to claim 8 is characterized in that, the device that is used for mobile regulating piston (11) is arranged on the structure of blow molding apparatus.
10. according to Claim 8 or 9 described equipment, it is characterized in that equipment comprises the arcuate die (2) of a diverting material flow direction.
11. equipment according to claim 10 is characterized in that, mould (2) is arranged to 90 ° of the flow directions of diverting material.
12., it is characterized in that, in the extruder basic setup in the horizontal direction according to claim 10 or 11 described equipment.
13. each described equipment is characterized in that according to Claim 8-12, equipment comprises the tumbler (18) of rotation regulating piston (11).
14. each described equipment is characterized in that according to Claim 8-13, regulating piston (11) has asymmetrical cross section.
15. each described equipment is characterized in that according to Claim 8-14, the device that being used for of extruder (1) infeeds material interface channel (9) is taper substantially.
CN99812029A 1998-10-12 1999-10-11 Method and apparatus for blow moulding Pending CN1323255A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI982216 1998-10-12
FI982216A FI107896B (en) 1998-10-12 1998-10-12 Blow molding method and device

Publications (1)

Publication Number Publication Date
CN1323255A true CN1323255A (en) 2001-11-21

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ID=8552696

Family Applications (1)

Application Number Title Priority Date Filing Date
CN99812029A Pending CN1323255A (en) 1998-10-12 1999-10-11 Method and apparatus for blow moulding

Country Status (8)

Country Link
EP (1) EP1156917A1 (en)
JP (1) JP2002527257A (en)
KR (1) KR20010075624A (en)
CN (1) CN1323255A (en)
AU (1) AU6205699A (en)
FI (1) FI107896B (en)
PL (1) PL347155A1 (en)
WO (1) WO2000021730A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6926509B2 (en) * 2002-05-31 2005-08-09 Ndh Medical, Inc. Apparatus for extruding tubing having a variable wall thickness
US8408439B2 (en) 2007-06-22 2013-04-02 Ethicon Endo-Surgery, Inc. Surgical stapling instrument with an articulatable end effector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1217187A (en) * 1968-09-09 1970-12-31 British Insulated Callenders Extrusion method and apparatus
US3819317A (en) * 1972-10-30 1974-06-25 Haskon Inc Apparatus for blow molding and injecting cooling gas
DE3809856A1 (en) * 1988-03-24 1989-10-05 Philips Patentverwaltung BLOW MOLDING MACHINE FOR BLOW MOLDING OF HOLLOW BODIES WITH WAITING PERIOD
EP0535254B1 (en) * 1991-08-08 1995-01-11 Ossberger-Turbinenfabrik Gmbh & Co. Apparatus for making a preform for blowmoulding bellows

Also Published As

Publication number Publication date
FI982216A0 (en) 1998-10-12
KR20010075624A (en) 2001-08-09
EP1156917A1 (en) 2001-11-28
FI107896B (en) 2001-10-31
PL347155A1 (en) 2002-03-25
AU6205699A (en) 2000-05-01
WO2000021730A1 (en) 2000-04-20
JP2002527257A (en) 2002-08-27
FI982216A (en) 2000-04-13

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