WO2000050213A1 - Rohrförmiges spritzgussteil für reinigungsgeräte - Google Patents
Rohrförmiges spritzgussteil für reinigungsgeräte Download PDFInfo
- Publication number
- WO2000050213A1 WO2000050213A1 PCT/EP2000/001427 EP0001427W WO0050213A1 WO 2000050213 A1 WO2000050213 A1 WO 2000050213A1 EP 0001427 W EP0001427 W EP 0001427W WO 0050213 A1 WO0050213 A1 WO 0050213A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plastic
- injection
- molded part
- injection molded
- tubular
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/32—Handles
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
- A47L9/24—Hoses or pipes; Hose or pipe couplings
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
-
- 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
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
- B29K2105/12—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of short lengths, e.g. chopped filaments, staple fibres or bristles
-
- 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
- B29L2023/00—Tubular articles
Definitions
- the invention relates to a tubular injection-molded part made of plastic with integrally molded connecting elements for cleaning devices, a device which is used for the production of the injection-molded parts, and a method for producing such tubular injection-molded parts according to the preambles of claims 1, 12 and 22.
- Tubular parts for cleaning devices are usually made from extruded plastic continuous tubes.
- the endless pipes are separated into sections of 40 to 50 cm in length, and a sleeve is formed at one end by shaping under the action of heat, so that pipes of different lengths are possible in particular for vacuum cleaners by connecting the pipe sections.
- Such plastic tube material has the disadvantage that it is flexible and flexible, so that more complex connecting elements such as bayonet connections or telescopic connections cannot be reliably produced with such flexible material.
- An extremely thick-walled plastic pipe is therefore required for such applications, or metallic pipe pieces are usually used in telescopic mechanics of vacuum cleaner pipes. Connection elements for the telescopic design of vacuum cleaner tubes can be reliably attached to such metallic tubes.
- a device for injection molding a plastic article in a mold cavity is known, the injection molded article having a sandwich layer configuration which has an outer surface of a skin material surrounding an inner core material.
- This device comprises a main injection unit which has a reciprocating screw for plasticizing the core material.
- An additional unit for plasticizing the skin material is connected to the main injection unit in order to add this to the skin material loaded.
- the skin material and the core material can then be injected into the mold cavity through a common nozzle.
- the object of the invention is to provide a tubular injection molded part made of plastic with integrally molded connecting elements for cleaning devices and a device with which such tubular injection molded parts can be produced, and to provide a method for producing such tubular injection molded parts, which overcomes the previous disadvantages of the prior art mentioned and in particular vacuum cleaner tubes are available that can be mass-produced inexpensively and inexpensively.
- This object is achieved with the subject matter of claims 1, 12 and 22. Further preferred embodiments are the subject of the dependent claims.
- the injection molded part has a fiber-reinforced inner layer and an outer, essentially continuous plastic coating with a smooth surface, which is fused to the inner layer by spraying into a common shape.
- the combination of plastic coating and fiber-reinforced inner layer for a tubular injection molded part can be made much thinner than a plastic tube made from only one plastic component without any fiber reinforcement.
- Another advantage of this solution is that the total weight of such a tubular injection molded part decreases significantly compared to the thick-walled tube made of a plastic component as well as compared to a thin-walled metal tube, and extremely inexpensive materials can be used for the fiber-reinforced inner layer without the aesthetic appearance of such a tubular injection molded part to diminish.
- color pigments in the plastic coating or metallic inclusions in connection with the smooth surface according to the invention can be used to deliver a product for cleaning devices which can be used excellently in industry.
- the smooth surface of the essentially continuous plastic coating is user-friendly and safe from injury, especially since the glass fibers, preferably made of short fibers, are only enclosed in the inner layer.
- the fusing of the inner layer with the plastic coating by injection into a common mold ensures that the plastic coating does not lift off or detach from the inner layer and cannot chip off.
- Another advantage of the tubular injection molded part made of plastic with integrally molded connecting elements over conventional, extruded plastic pipes with a molded sleeve is that the pipe cross-section, especially at the ends with the connecting elements, can be varied as required and depending on the load and type of connecting elements, which is conventional extruded plastic pipes is not possible.
- a recycled plastic waste is used for the inner layer, which can be plasticized with short fibers made of glass or rock wool in order to make the tubular injection molded part significantly cheaper than plastic pipes made from a single plastic component, such as polyamide, with a consistently high dimensional stability and consistently high-quality plastic coating.
- the tubular injection molded part preferably has a plastic coating both on the outside and on the inside. This has the advantage that, particularly with cleaning devices, the material guided in the pipe can slide better on the smooth surfaces of the plastic coating. This advantage is particularly noticeable with vacuum cleaner pipes, since mites and other germs cannot adhere to the smooth surface of the plastic coating on the inside.
- the tubular injection molded part could be produced by two injection molding processes, in that the injection molded part is first produced from a fiber-reinforced material and then, in a second step, a plastic coating is placed over the fiber-reinforced injection molded part.
- a plastic coating is placed over the fiber-reinforced injection molded part.
- both injection molding components are in the molten state and only the continuous plastic coating falls below the softening point of the plastic in this injection molding process when it is injected into the mold on the inner walls of the mold earlier than the fiber-reinforced inner layer and solidifies as skin on the inner walls of the injection mold .
- the tubular part preferably predominantly has the material of the inner layer.
- the tubular injection molded part can preferably have a connecting element for a handle or an integrally formed handle, without additional connecting elements between the tubular part and the handle being necessary.
- the handle can preferably be arranged in an area in which the tubular injection molded part is bent and has a plug-in attachment for a vacuum cleaner hose.
- Such an embodiment has significant ergonomic advantages. especially when handling the vacuum cleaner neither the hose nor the pipe are to be gripped by the hand of the user, but a handle adapted to the hand is available. If required, switching and control elements can be installed in the handle, which regulate the power as well as enable switching on and off via a flat cable connection injected into the tube or via a radio connection.
- the injection molded part preferably has a socket attachment at one end and a plug attachment at the other end of the tubular injection molded part.
- this tubular part produced by injection molding has the advantage that a sleeve attachment and / or a connector attachment with different wall thicknesses can be produced in one injection molding process, so that depending on the mechanical load on the connectors the tubular parts of both the socket approach and the plug-in approach can be designed and adapted for different loads.
- connection forms can also be selected and produced with only one injection process, in particular lugs at the ends of the tubular injection molded part for a bayonet connection, which not only enables tubular injection molded parts to be plugged together, but also ensures mutual locking of the tubular injection molded parts.
- the injection molded part can have connecting elements for a telescopic mechanism.
- the inner tube can be provided with recesses into which a ball engages, which is attached to an outer tube of the telescopic mechanism and is preloaded in such a way that it presses on the inner tube in the radial direction.
- a push-button mechanism can be provided on the connecting element of the outer tube, which receives the preloaded ball, which partially reduces the preload of the ball for moving the telescopic tube in order to move, for example the inner tube with its recesses facilitate. If the push button mechanism of the push button mechanism is not actuated, the ball then snaps into the next possible recess with full pretension and thus advantageously secures the selected ergonomically most favorable position, for example for guiding a vacuum cleaner nozzle.
- the plastic coating is preferably made of acrylic butadiene polystyrene, polyamide or polypropylene.
- thermoplastics have the advantage that they can be injected extremely thinly into a plastic skin in the liquid state and, on the other hand, fall below their softening point relatively quickly compared to the fiber-reinforced main plastic mass on the inner walls of a mold.
- they can be provided with color pigments and other additives, for example with a metallic sheen, in order to form the most diverse and best-selling color, gloss and reflection effects in the plastic coating.
- a device for producing such an injection-molded part which has a heated mold core and a heated outer mold, and comprises an additional plasticizing unit in addition to a main plasticizing unit.
- the device advantageously has a continuous tubular structure, that is to say from the injection end to the mold end, a constant ratio between the plastic mass of the plastic coating and the plastic mass of the inner layer.
- the device preferably has an auxiliary injection element for injection, such as a concave nozzle plate and / or an injection cone, which are arranged on the injection end for the tubular part.
- an auxiliary injection element for injection such as a concave nozzle plate and / or an injection cone, which are arranged on the injection end for the tubular part.
- the device for producing the tubular injection molded part can be tempered in such a way that the material of the plastic coating initially partially covers the inner walls of the outer mold and can form a thin plastic skin, so that there is a molten boundary layer between the plastic skin and a pressing plastic mass made of material for the plastic coating and out can form fiber-reinforced plastic for the inner layer of the tubular part, wherein both plastic masses can be sprayed into the mold from a common injection cylinder.
- the plastic mass for the plastic coating from the additional plasticizing unit and the plastic mass of fiber-reinforced plastic for the inner layer from the main plasticizing unit are arranged in the common injection cylinder before being injected into the injection mold in such a way that the injection molding material for the plastic coating is downstream of the plastic mass for the inner layer in the Injection cylinders are arranged so that they can flow one after the other into the tubular injection mold.
- this mold has at least two, preferably three, independently controllable heating zones. With the help of this Heating zones make it possible to set a temperature gradient which advantageously increases downstream, so that a premature drop below the softening temperature of the plastic mass of the inner layer towards the end of the mold core is avoided.
- the outer shape also has at least two, preferably three, independently controllable heating zones in order to set a suitable temperature gradient in the flow direction, which ensures that a uniform layer thickness of the plastic coating in the flow direction, i.e. in the axial direction of the tubular Injection molded part is reached.
- the adjustable heating zones are set in such a way that a temperature gradient occurs between the injection end and the end of the mold in such a way that the temperature rises downstream.
- the mold core and / or the outer shape are supplied with energy in a controllable manner by means of water and / or oil circulation. Tempered water circuits are sufficient as long as the required heating temperatures for the mandrel and / or outer mold do not significantly exceed 100 ° Celsius. An oil circuit is preferably used for higher temperatures. Such heating circuits are complex to design, especially when tubular injection molded parts with a small pipe diameter can be realized. Therefore, in a further preferred embodiment of the device, the core shape and / or the outer shape has heating cartridges for heating. The heating cartridges for the outer shape are tubular. Such heating cartridges have the advantage that they can be heated electrically and thus there are no sealing problems as with water or oil circuits.
- any desired temperature profile can be set axially for a tubular injection molded part with such heating cartridges.
- the temperature control of the core shape and / or the outer shape in a preferred embodiment of the device not only can a uniform distribution of the two plastic mass components along the axial extension of a tubular injection molded part be achieved, but this ratio can be adapted to the different strength requirements along the axial extension be, that is, it can preferably be realized in the injection molded connection lugs at the ends of the tubular injection molded part, a significantly higher proportion of the plastic mass of the inner layer than on the longitudinal extension of the tubular injection molded part.
- a preferred embodiment of the device has a heated three-way valve.
- this heated three-way valve connects the additional plasticizing unit to the common injection cylinder and thus enables the injection cylinder, which is initially completely filled with the plastic composition of the inner layer, to be filled with the plastic composition of the plastic coating in the downstream area of the common injection molding cylinder.
- the injection cylinder which is loaded in succession with both plastic masses via the first position of the heated three-way valve, is connected to the spray nozzle, so that the device enables a joint injection of the two plastic masses into the injection mold.
- the following process steps are preferably carried out in succession: a) filling an additional plasticizing unit with plastic granulate for the plastic coating and heating the plastic material for the plastic coating,
- the tempering of the mandrel and the outer shape can certainly start before steps a) and b) if the timing makes this necessary. Injection of the plastic both for the synthetic coating and for the inner layer can only take place if, on the one hand, the plastic materials have been suitably prepared, that is, have been plasticized, and, on the other hand, the temperature control of both the mold core and the outer mold has been completed.
- the coordination of the temperatures and the temperature gradient at Tempering the mandrel and / or the outer shape essentially depends on the thickness of the plastic coating and whether a plastic coating should also be achieved inside the tubular injection molded part.
- the thickness ratio can be adjusted with the aid of the temperature coordination between the mold core and the outer mold.
- the mandrel is kept at a higher temperature level than the outer mold, so that the inner plastic coating is extremely thin compared to the outer plastic coating.
- This heating of the mold core can be increased compared to the outer mold to such an extent that practically no plastic coating can arise in the interior of the tubular injection molded part.
- a two-layer structure for the tubular injection molded part is advantageously achieved.
- the introduction of the plastic from the additional plasticizing unit and the main plasticizing unit into a common injection cylinder is carried out in such a way that the plastic masses are arranged one after the other in the injection cylinder and the plastic material from the additional plasticizing unit fills the front area of the injection cylinder in the direction of injection.
- Fig. 1 shows a perspective view of a tubular injection molded part with molded connecting elements according to an embodiment of the invention.
- FIG. 2 shows a perspective view of the socket attachment of a tubular injection molded part from FIG. 1
- Fig. 3 shows a perspective view of a portion of a tubular injection molded part with an angled sleeve and molded switch housing.
- Fig. 4 shows a perspective view of the injection molded part of Fig. 3 with a molded receptacle for a supply cable.
- FIG. 5 shows a perspective view of a telescopic mechanism with adjustable inner tube and bent outer tube, as well as a cast-on handle.
- Fig. 1 shows a perspective view of a tubular injection molded part 1 with molded connecting elements 2 according to an embodiment of the invention.
- the injection molded part 1 has a fiber-reinforced inner layer 3 and one outer, essentially continuous plastic coating 4 with a smooth surface.
- the plastic cover (4) is fused to the fiber-reinforced inner layer 3, so that the plastic cover is not expected to flake or peel off.
- the integrally formed connecting elements 2 are a socket attachment 7 and a plug attachment 8, so that pipe sections of any length can be put together from this tubular injection molded part.
- approaches for a bayonet connection can also be easily produced in this two-layer form.
- FIG. 2 shows a perspective view of the socket attachment 7 of a tubular injection molded part 1 from FIG. 1, but with the difference that a three-layer structure of the tubular injection molded part 1 has been realized here.
- This three-layer structure consists of an outer plastic coating 4, a fiber-reinforced inner layer 3 and an inner plastic coating 15.
- Such an inner plastic coating 15 can be achieved simultaneously with the manufacture of the tubular injection molded part in that the mold core is tempered so weakly that when the plastic materials are injected for the plastic covering 4 and the fiber-reinforced inner layer 3 also result in a thin inner plastic covering 15, in which the softening point for the plastic mass of the plastic covering 15 falls below earlier on all inner walls of the shape than for the plastic mass of the fiber-reinforced inner layer 3.
- the sleeve extension 7 can be made any stronger than in the tubular section 16 in order to absorb increased forces which act on the sleeve plug connection by stiffening the sleeve 7 without the sleeve 7 tearing t or breaks.
- Fig. 3 shows a perspective view of a portion of a tubular
- the tubular injection molded part 1 with an angled sleeve 7 and molded switch housing 18.
- the tubular injection molded part 1 has a three-layer structure of an outer plastic cover 4, an inner plastic cover 15 and an intermediate fiber-reinforced inner layer 3.
- the switch housing 18 can accommodate a button 17 for switching on and off, for example a vacuum cleaner motor.
- a transmitter for connection to the vacuum cleaner motor can be accommodated in the switch housing 18, which transmitter interacts with a receiver in the vacuum cleaner motor housing.
- supply lines can also end that have been cast into the tubular injection molded part in order to pass on switching signals of the button 17 to a motor housing via the cast-in connecting lines.
- Such an embodiment is particularly advantageous when the tubular part interacts with an active vacuum cleaner nozzle which contains a rotating motor-operated brush.
- FIG. 4 shows a perspective view of the injection molded part 1 of FIG. 3 with a molded-on receptacle 19 for a supply cable. Also in this one
- a three-layer structure of the injection molded part 1 is used. which consists of an outer plastic coating 4, a fiber-reinforced inner layer 3 and an inner plastic coating 15.
- the molded receptacle 19 can be produced in one injection molding process with the injection molded part 1.
- the injection molded part additionally has
- Dovetail guides can have corresponding locking elements in order to lock a removable handle in a secure position.
- FIG. 5 shows a perspective view of a telescopic mechanism 10 with an adjustable inner tube 11 and a bent outer tube 12, as well as a cast-on handle 6.
- the inner tube 11 has cutouts 13 on its outer surface, which are provided with a ball mechanism, which is housed in the cast-on connecting element 2, cooperates.
- a push button 21 can be accommodated, the spring preload for the ball element, which engages in the recess 13, partially reduced, so that the inner tube 1 1 can be positioned easily and displaceably in the outer tube.
- a handle 6 is cast on, which is produced simultaneously with the manufacture of the outer tube 12 during injection molding.
- a connector 8 is bent relative to the outer tube axis, for example to connect a vacuum cleaner hose.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00906368A EP1161334A1 (de) | 1999-02-22 | 2000-02-22 | Rohrförmiges spritzgussteil für reinigungsgeräte |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19907508.5 | 1999-02-22 | ||
DE1999107508 DE19907508A1 (de) | 1999-02-22 | 1999-02-22 | Rohrförmiges Spritzgußteil für Reinigungsgeräte |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000050213A1 true WO2000050213A1 (de) | 2000-08-31 |
WO2000050213A8 WO2000050213A8 (de) | 2001-06-28 |
Family
ID=7898399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/001427 WO2000050213A1 (de) | 1999-02-22 | 2000-02-22 | Rohrförmiges spritzgussteil für reinigungsgeräte |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1161334A1 (de) |
DE (1) | DE19907508A1 (de) |
TR (1) | TR200102382T2 (de) |
WO (1) | WO2000050213A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6568025B2 (en) | 2001-06-21 | 2003-05-27 | Black & Decker Inc. | Vacuum cleaner having upright handle with translucent tray for supporting accessory attachments |
DE10221458A1 (de) * | 2002-05-15 | 2004-03-18 | Otte Kunststofftechnik Gmbh | Vorrichtung zur Ummantelung von Rohrbögen |
FR2877561B1 (fr) * | 2004-11-05 | 2009-05-01 | Groupe Aubret Soc Par Actions | Lance d'aspiration |
DE102014119243A1 (de) * | 2014-12-19 | 2016-06-23 | Festool Gmbh | Saugschlauch-Anschlussstück |
DE102014119244A1 (de) * | 2014-12-19 | 2016-06-23 | Festool Gmbh | Saugschlauch-Anschlussstück |
DE102014119239A1 (de) * | 2014-12-19 | 2016-06-23 | Festool Gmbh | Saugschlauch-Anschlussstück |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5743356A (en) * | 1980-08-26 | 1982-03-11 | Miyagawa Kasei Kogyo Kk | Storage battery container and its manufacture |
US4826424A (en) * | 1985-09-25 | 1989-05-02 | Canon Kabushiki Kaisha | Lens barrel made by injection molding |
WO1989009688A1 (en) * | 1988-04-08 | 1989-10-19 | Plm Ab | Injection moulding of a preform and/or a container and a container of thermoplastic material |
DE3940436A1 (de) * | 1988-12-12 | 1990-06-13 | Valeo Vision | Verfahren zur herstellung eines thermoplast-reflektors und so hergestellter reflektor |
DE4340990A1 (de) * | 1993-11-05 | 1995-05-11 | Battenfeld Gmbh | Verfahren und Vorrichtung zum Spritzgießen von mehrschichtigen Gegenständen |
WO1997045250A1 (en) * | 1996-05-31 | 1997-12-04 | Perstorp Ab | A process for the manufacturing of a pressure vessel and a pressure vessel, especially for a water heater, made by the process |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3539761A1 (de) * | 1985-11-09 | 1987-05-14 | Agfa Gevaert Ag | Spritzverfahren zur herstellung von kunststoffwalzen fuer fototechnische geraete, druckmaschinen oder dergl. und nach dem verfahren hergestellte walze |
FR2622501B1 (fr) * | 1987-10-29 | 1990-01-05 | Cibie Projecteurs | Procede de moulage par injection de matiere thermoplastique, composition a mouler pour realiser un objet a structure multicouche et objet ainsi realise, notamment corps de reflecteur |
DE3932416A1 (de) * | 1989-09-28 | 1991-04-11 | Kloeckner Ferromatik Desma | Verfahren zum spritzgiessen von mehrkomponenten-kunststoffkoerpern und vorrichtung zur durchfuehrung des verfahrens |
-
1999
- 1999-02-22 DE DE1999107508 patent/DE19907508A1/de not_active Withdrawn
-
2000
- 2000-02-22 TR TR2001/02382T patent/TR200102382T2/xx unknown
- 2000-02-22 EP EP00906368A patent/EP1161334A1/de not_active Withdrawn
- 2000-02-22 WO PCT/EP2000/001427 patent/WO2000050213A1/de not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5743356A (en) * | 1980-08-26 | 1982-03-11 | Miyagawa Kasei Kogyo Kk | Storage battery container and its manufacture |
US4826424A (en) * | 1985-09-25 | 1989-05-02 | Canon Kabushiki Kaisha | Lens barrel made by injection molding |
WO1989009688A1 (en) * | 1988-04-08 | 1989-10-19 | Plm Ab | Injection moulding of a preform and/or a container and a container of thermoplastic material |
DE3940436A1 (de) * | 1988-12-12 | 1990-06-13 | Valeo Vision | Verfahren zur herstellung eines thermoplast-reflektors und so hergestellter reflektor |
DE4340990A1 (de) * | 1993-11-05 | 1995-05-11 | Battenfeld Gmbh | Verfahren und Vorrichtung zum Spritzgießen von mehrschichtigen Gegenständen |
WO1997045250A1 (en) * | 1996-05-31 | 1997-12-04 | Perstorp Ab | A process for the manufacturing of a pressure vessel and a pressure vessel, especially for a water heater, made by the process |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 006, no. 115 (E - 115) 26 June 1982 (1982-06-26) * |
Also Published As
Publication number | Publication date |
---|---|
EP1161334A1 (de) | 2001-12-12 |
WO2000050213A8 (de) | 2001-06-28 |
DE19907508A1 (de) | 2000-08-24 |
TR200102382T2 (tr) | 2002-02-21 |
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