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
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
  • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
  • B29C45/14336—Coating a portion of the article, e.g. the edge of 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
  • B29C49/04116—Extrusion blow-moulding characterised by the die
• • 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
  • B29C49/4242—Means for deforming the parison prior to the blowing operation
• • 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
• • 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
  • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
  • B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
• • 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
  • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
  • B29C45/14336—Coating a portion of the article, e.g. the edge of the article
  • B29C2045/1445—Coating a portion of the article, e.g. the edge of the article injecting a part onto a blow moulded object
• • 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
  • B29C2049/2017—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 outside 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
  • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
• • 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
  • 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
  • B29C49/4242—Means for deforming the parison prior to the blowing operation
  • B29C49/4244—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould
  • B29C49/4245—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould aided by air floating
• • 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
  • B29C49/4242—Means for deforming the parison prior to the blowing operation
  • B29C49/4244—Means for deforming the parison prior to the blowing operation during or after laying preform into the final mould
  • B29C49/42454—The mould opening plane being vertical
• • 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
  • B29L2023/004—Bent tubes

Definitions

• the present invention relates to a method to produce in a moulding machine objects showing tubular shape, tubular shape with bellows shaped parts, in the shape of hollow bodies and/or relatively thin walled objects and in applicable cases with connected devices and parts to the object.
• a tube of blow moulding material is extruded or injected through a first die in order to be blow moulded in a mould cavity in a mould.
• the object is removed from the mould by opening the mould or a split of the mould members.
• the second half member of the moulding tool is then supplied to the first half member and blow moulding of the object is carried out.
• the device is, however, of a particular kind and conventional blow moulding method and moulding machine cannot be utilized. Neither in the case of such a device can possibly to the pipe piece necessary connections be moulded in one piece with the pipe piece and therefore not in the same manufacturing process, but must be moulded as separate parts for arrangement to the pipe piece after its manufacture, whereby, in addition, there is subsequent work, such as measuring of anchoring points on the pipe piece, customary hole making and assembly and anchoring of the connect ⁇ ions in question and similar. Such connections could be holding devices, connections of ducts, nipples and other devices in the pipe piece.
• the extruded tube In order to avoid seams in a tube or pipe when using a blow moulding method the extruded tube must have a diameter less than the cross sectional area of the mould cavity. Seams in such objects, which are for example exposed to mechanical stresses in the form of for example vibrations, as in the case of inlet pipes to vehicle engines, must with a view to strength factors be avoided. A bellows is moreover an example of such a part in a tube or pipe which shall absorb and distribute vibrations and other stresses.
• Traditional blow moulding material such as plastic material, which should be used for this purpose, can in view of the strength factors not be utilized for these products and neither can such materials be used for a rationalized manufacturing, which are traditionally able to be vulcanized, since these cannot be blow moulded.
• a mixture of plastic and rubber material or so-called elasto- mers or thermoplastic elastomers can be used for blow moulding and also comply with strength specifications even for the manufacture of tubes or pipes and the like with bellows.
• the purpose of the method according to the invention is thus to be able to produce a tube, pipe or similar which preferably runs in one or more dimensions and which in applicable cases shall display one or several bellows and in that respect connecting tubes, pipes or similar to the bellows and which is moulded in a tool during one and the same occasion, i.e. in one piece during one manufacturing process.
• An another purpose is that in applicable cases to provide such an object with connecting devices and parts which are manufactured in the tool and during the same occasion as the object and also so that such connecting devices and parts become moulded in one piece with the rest of the object.
• a method in accordance with the invention is characterized in that the extruded or injected tube is entered and fed through the tool or its mould cavity after the mould members of the tool, which show mould cavities for moulding of objects by blow mould ⁇ ing, have been closed.
• the invention also relates to an arrangement for producing objects in accordance with the invention.
• the arrangement thus comprises a mould- ing tool with a mould cavity in which a tube of a material, which is able to be blow moulded or a thermoplastic material, is blow moulded and in applicable cases is provided with connecting devices or parts, whereby the tube is extruded or injected through a first die and after the blow moulding is taken out from the mould byopening of the mould.
• the arrangement is characterized in that the arrangement comprises lower and upper jaws, whereby the lower jaw or for example shaped as a pair of jaws is arranged for closure of an adjacent opening of mould's mould cavity.
• the mould shows one or several injection moulding cavities arranged in connection or adjacent to the afore mentioned mould cavity and that the arrangement or the moulding machine comprises at least one second nozzle which is arranged for supplying of a material, which is able to be injection moulded or a thermoplastic material, to the injection moulding cavity or cavities for injection moulding of connecting devices or parts to that object which is blow moulded.
• the connecting devices or parts may comprise tube connections, tubules, nipples, attachment devices, such as attachment lugs and other devices of the object or in an arrangement, whereby the object in one and the same mould and during the same or substantially the same manufacturing process is equipped with such additional devices and parts.
• the invention also relates to an object which is produced according to the method in accordance with the invention or in the arrangement in accordance with the invention.
• the object shows in this respect tubular shape, tubular shape with one or more bellows shaped parts, is in the shape of hollow bodies and/or relatively thin walled objects and in applicable cases with connected devices and parts to the object. More ⁇ over, the object is composed of rubber, plastic material, a mixture of rubber and plastic material or a thermoplastic elastomer or an another thermoplastic material, which is able to be blow moulded and in applic ⁇ able cases of a thermoplastic material, which is able to be injection moulded.
• the object is characterized in that the object is moulded in one piece and without showing seams along the length of the object.
• the object shows at least one bellows or one or several bellows shaped parts and/or at least one connecting device or part, for example in the shape of one or several connecting tubes, attachment devices or the like.
• Fig. l a shows from one side a part of a die and an extruded tube
• Fig. 1 b shows from one side a die or a second die and a part of a moulding tool
• Fig. 2 a - 2 c show from one side different phases of an arrangement's work mode or cycle
• Fig. 3 shows from above a part of a mould and in a phase according to Fig. 2 c
• Fig. 4 shows from one side a part of a mould according to an additional embodiment of the invention and with certain auxiliary equipment
• Fig. 5 shows from one side an example of an object which has been produced in an arrangement in accordance with the invention and according to a method in accordance with the invent ⁇ ion
• Fig. 6 shows from one side a part of a die according to an addit- ional embodiment of the invention
• Fig. 7 shows from one side a second example of an object which has been produced in an arrangement in accordance with the invention and according to a method in accordance with the invention
• Fig. 8 shows from one side a third example of an object which has been produced in an arrangement in accordance with the ' invention and according to a method in accordance with the invention
• Fig. 9 shows from one side an example of a part of an arrangement according to yet another embodiment of the invention
• Fig. 10 shows from the side an example of a part of an arrangement with a mould half which is included as a part of a mould.
• the reference designation 1 in the figures shows an arrangement or a part of an arrangement or a moulding machine or a blow moulding machine which comprises a moulding tool 2 which is openable by a split of mould members for the possibility to remove a produced article or object.
• the mould 2 shows a mould cavity 3 with a first opening 24 and a second opening 25.
• a first closing device 4 such as a lower pair of jaws 4 or similar
• a second closing device 5 such as an upper pair of jaws 5 or similar.
• a die 7 can extrude a tube 9 which is intended to be entered into the mould cavity 3 when the mould 2 or its mould members are closed.
• Medium for blow moulding of the tube 9 in the mould cavity 3 is supplied via a blow nozzle 8 or in place of it a blow pipe 38.
• an extruder or a die 27 extrudes a tube 29 which shall be received by a moulding tool for blow moulding against the mould surfaces in the mould's mould cavity.
• a cutting device 31, as a knife can be arranged to separate the tube 29 from the tube or the material which is in progress.
• Fig. 1 b shows in addition that in a blow moulding machine the moulding tool 22 can collect the extruded tube 29 and contain it in its mould cavity 23 and then move itself to a blowing station for blow moulding of the tube with the aid of a blow nozzle 28.
• Fig. 2 a - 2 c show schematically an embodiment of an arrangement in accordance with the invention in different production phases.
• a moulding tool 2 with a mould cavity 3 is provided with lower jaws 4 and upper jaws 5 in connection with adjacent openings 24 and 25 in the mould's mould cavity 3.
• the mould or its mould halves or members are closed in Fig.
• the jaws 5 can show a recess so that the tube is not fully closed and an aperture 6 is obtained in the tube so that the blow nozzle 8 can be brought into the interior of the tube 9 for blow moulding, see also Fig. 3.
• the jaws 5 close to the blow pipe 38 with inter ⁇ vening parison 9, see the embodiment examples according to Figs. 6 and 9.
• the blow pipe 38 is at the ejector or accumulator unit arranged fixed.
• a closed tube 9 or parison will be achieved for blow moulding in the mould cavity 3 in the mould 2. It is important according to the present arrangement and method that the tube 9 or parison is extruded into the mould's 2 mould cavity 3 in a closed mould or closed mould halves or members in the moulding tool, as also is shown in the figures.
• the mould 2 is opened by a split of the mould halves or members, as shown by the arrows 17 in Fig. 2 c, and the blow moulded object 10 can be removed.
• the jaws 4, 5 have at this been moved aside or returned to their initial position. After this, the mould halves or members close again or the mould 2 and the tube 9 or parison is extruded down, into and through the mould's 2 mould cavity 3.
• An object 10, which can herein be produced is for example an inlet pipe to vehicle engines and which shows a bellows 11, curved sections 14 and openings 12 and 13 which are not only directed in opposite directions but can also be directed or open out in planes at an angle to each other and the curves 14 can be in different planes and the object 10 runs in two or at least three but also in more dimensions.
• Fig. 4 shows that if necessary different means can be utilized to simplify the feeding of the tube 9 or parison through the mould's 2 mould cavity 3.
• the mould 2 can show ducts 18 or holes through which supporting air or a corresponding medium can be supplied to form an air cushion or similar in curves in the mould cavity 3 and thus guide the tube or parison without it fastening in different passages in the mould cavity 3.
• the ducts may instead comprise vacuum ducts to form low pressure points in the mould cavity 3.
• a suction apparatus 19 can be supplied to the mould's 2 opening 24 and tightly connected to suck the tube 9 or parison through the mould cavity 3 or form a low pressure in the mould cavity 3 and in so doing facilitate the feeding of the tube 9 or parison in the mould cavity.
• a fan 20 in a connectable pipe 19 is a device in this respect.
• the suction apparatus 19 may instead comprise a vacuum suction apparatus or an injector which blows air and generates low pressure in the mould cavity 3.
• Fig. 6 shows a die 37 to an ejector or accumulator unit 36 with a fixed blow pipe 38.
• the material or the parison 9 is ejected or pressed out from the die coaxially around the blow pipe 38, whereby a tube 9 is produced more rapid for blow moulding.
• a vacuum pump, a suction device, an air blower or the like can be used.
• Examples of such means are a vacuum suction apparatus or an injector 19 and in combination with the formation of air cushions or the like.
• a vacuum suction apparatus or an injector 19 By achieving a low pressure in the mould cavity 3 an improved guid- ing of the tube or parison is attained at the same time as the ejector or unit gives an air current.
• the injector or vacuum pump 19 can be tightly connected round the opening 24 of the mould cavity 3 in order to fortify the flow achieved through the mould cavity 3 which flow guides the tube or parison or that the tube or parison follows the air flow when it is ejected or pressed out when ejection or extrusion from the die takes place.
• Figs. 7 and 8 show objects 10 which extends in at least three dimens ⁇ ions, i.e. the objects extend or turn in three planes or directions.
• the object runs or curves in one direction, partly in another direct ⁇ ion but the whole object also turns or curves in a third direction or across or horizontally according to the figures.
• the object 10 can be furnished with connecting devices 21 or parts, such as tube connections 26, tubules, attachment devices, attachments lugs and other additional parts which in known methods must be manufactured as separate parts and afterwards be assembled to an object 10.
• connecting devices 21 or parts such as tube connections 26, tubules, attachment devices, attachments lugs and other additional parts which in known methods must be manufactured as separate parts and afterwards be assembled to an object 10.
• Such subsequent processing and separate manufacturing of connecting parts and the like can be avoided when utilization the method in accordance with the invention, since the connecting parts can be produced at the same time, in the same mould or moulding machine and in the same or substantially the same manufactur- ing process or manufacturing cycle, as the object itself.
• Figs. 9 and 10 show a moulding tool 2 which is provided with one or several mould cavities 33 which connect to the mould cavity 3 for blow moulding.
• the additional mould cavities 33 communicate via ducts 35 with second nozzles 39 or injection mould nozzles or extruders for supplying a thermoplastic material or a material, which is able to be injection moulded, to the injection mould cavity 33 or injection mould cavities.
• the connecting devices 21 shall be formed as tubes 26, nipples or similar, cores 34 are arranged, which can be inserted into the inject ⁇ ion mould cavities 33 via channels 32.
• an object or a product can, as current is composed of several parts 10, 21, 26, 30 or several different bodies, be produced at the same time in accordance with the. invention.
• a parison 9 is ejected into the closed moulding tool 2 or the mould halves or members and fed through the mould cavity 3.
• the jaws 4, 5 pinch the parison 9 and the upper jaws 5 pinch the parison against the blow pipe 38.
• the cores 34 if such are to be used, have already been inserted or is inserted into their positions in the injection mould cavities 33, after which the material for injection moulding is supplied. This material can be supplied to the mould halves or the mould 2 and the injection mould cavities 33 as soon as the moulding tool 2 or the mould halves have obtained their closed position.
• the cores 34 are in applicable cases first displaced out from the mould 2 or the mould halves and from such channels 32 as are included.
• the jaws 4, 5 have in conformity with what has been previously mentioned been removed or returned. The process is rational and rapid and is repeated for production of numerous objects one after the other.
• One work cycle for the arrangement is as follows, namely that the mould halves or members are brought together, cores to be used are inserted into the injection mould cavities, a hose communicating with a vacuum pump, suction apparatus or injector is displaced to the combined mould, halves and brought to surround an opening which leads to the mould cavity in the mould halves.
• a tube or parison of the material is extruded or pressed out with an extruder or accumulator machine and introduced into the unified mould halves and through the mould cavity and out through the said opening while a certain pressure and flow is permitted through the blow pipe so that supporting air is held into the tube or parison.
• the said hose to the vacuum pump or the like is then moved away from the unified mould halves.
• Jaws are shifted to closure or pinching of the extruded or ejected material tube or parison which has been fed through the mould cavity of the unified mould halves and closes the tube or parison under the mould halves. Jaws are as well shifted for closure or pinching of the material tube or parison under the extruder die or the accumulator machine's outlet opening or die, whereby the extruded or ejected material tube or parison is brought to be pinched between the jaws and the blow pipe for the input of blow air for the blow moulding which takes place via an increase in the pressure and flow. Cores have in applicable cases been shifted to their intended positions in the moulding tool or mould halves if connection devices or parts of the previously mentioned type are to be present.
• the increase of pressure and flow of the blow air takes place and air is injected into the closed material tube or parison for blow moulding and in applic ⁇ able cases simultaneously or just before or just after, depending on the setting of the injection moulding arrangement and product to be produced, the injection moulding nozzle or the nozzles inject the injection mould ⁇ ing material into the moulding tool via ducts and to the or those mould cavities which are arranged for injection moulding and located in the mould halves or in injection moulding tools.
• the blow moulding can take place with a delay of a few tenths of a second.
• the method can be used in various kinds of moulding machines for production of objects.
• the number of injection moulding cavities can differ, as well as inject ⁇ ion moulding units fOr the injection moulding.
• the shape and location of the injection moulding cavities can be differently for producing varying connecting devices and parts.
• the shaping of the jaws can be different.
• the objects, which shall be manufactured, can be of all sorts, as containers, pipe connections, tubes, etc. but with a duct or conduit which can be blow moulded.
• the materials to be used are able to be blow moulded and injection moulded.
• thermoplastic elastomers for the body to be blow moulded.
• the method, the arrangement and the objects, which shall be produced, are thus not restricted to what has been indicated by the embodiments but soley by the following claims.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
• Moulds For Moulding Plastics Or The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20370343

Family Applications (1)

Country Status (3)

Families Citing this family (15)

Family Cites Families (6)

• 1987
  • 1987-11-23 SE SE8704622A patent/SE8704622D0/xx unknown
• 1988
  • 1988-11-23 WO PCT/SE1988/000636 patent/WO1989004755A1/en not_active Ceased
  • 1988-11-23 EP EP88910176A patent/EP0401222A1/de not_active Withdrawn

Non-Patent Citations (1)

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