PL180631B1 - Electrofusion apparatus and method - Google Patents
Electrofusion apparatus and methodInfo
- Publication number
- PL180631B1 PL180631B1 PL96325555A PL32555596A PL180631B1 PL 180631 B1 PL180631 B1 PL 180631B1 PL 96325555 A PL96325555 A PL 96325555A PL 32555596 A PL32555596 A PL 32555596A PL 180631 B1 PL180631 B1 PL 180631B1
- Authority
- PL
- Poland
- Prior art keywords
- sleeve
- pipe
- plastic
- coil
- bonding material
- Prior art date
Links
Classifications
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3404—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint
- B29C65/342—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
- B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
- B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5229—Joining tubular articles involving the use of a socket
- B29C66/52291—Joining tubular articles involving the use of a socket said socket comprising a stop
- B29C66/52292—Joining tubular articles involving the use of a socket said socket comprising a stop said stop being internal
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
- B29C66/712—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined the composition of one of the parts to be joined being different from the composition of the other part
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/735—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the extensive physical properties of the parts to be joined
- B29C66/7352—Thickness, e.g. very thin
- B29C66/73521—Thickness, e.g. very thin of different thickness, i.e. the thickness of one of the parts to be joined being different from the thickness of the other part
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3468—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the means for supplying heat to said heated elements which remain in the join, e.g. special electrical connectors of windings
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
- B29C65/3472—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint
- B29C65/3476—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic
- B29C65/348—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" characterised by the composition of the heated elements which remain in the joint being metallic with a polymer coating
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/08—Copolymers of ethylene
- B29K2023/083—EVA, i.e. ethylene vinyl acetate copolymer
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- 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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
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- 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
- B29K2705/00—Use of metals, their alloys or their compounds, for preformed parts, e.g. for inserts
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- 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
- B29L2023/22—Tubes or pipes, i.e. rigid
Abstract
Description
Przedmiotem wynalazku jest sposób łączenia rury z tworzywa sztucznego z drugą rurą z materiału, który nie łączy się dobrze z tym tworzywem sztucznym.The present invention relates to a method of joining a plastic pipe to a second pipe made of a material that does not bond well with the plastic.
Z francuskiego opisu patentowego nr 2526439 jest znany sposób łączenia ze sobą dwóch rur za pomocą tulejek mających zwoje elektrycznego drutu grzejnego, w którym dwie rury przeznaczone do połączenia wkłada się do przeciwległych zakończeń tulei, a następnie do zwojów elektrycznego drutu grzejnego doprowadza się prąd elektryczny dla stopienia zewnętrznych powierzchni zakończeń tych rur z zakończeniami tulei. Sposób ten jest szerokoFrench Patent No. 2,526,439 discloses a method of joining two pipes together by means of sleeves having coils of an electric heating wire, in which two pipes to be connected are inserted into opposite ends of the sleeve, and then an electric current is applied to the coils of the electric heating wire to melt it. the outer surfaces of the ends of these pipes with the ends of the sleeves. This way is widely
180 631 stosowany do łączenia ze sobą rur wykonanych z tego samego tworzywa sztucznego lub z tworzyw sztucznych, które dobrze się wiążą ze sobą po ogrzaniu. W tego rodzaju przypadku, tuleja jest wykonana z tego samego tworzywa sztucznego co łączone rury lub z materiału, który wiąże się dobrze z tworzywem sztucznym, z którego są wykonane łączone rury.180 631 used for joining together pipes made of the same plastic or plastics, which bond well together when heated. In such a case, the sleeve is made of the same plastic as the pipes to be joined, or of a material that bonds well with the plastic of which the pipes to be joined are made.
Istnieją jednak zastosowania, w których jest konieczne połączenie rury wykonanej z tworzywa sztucznego, które nie wiąże się dobrze z materiałem drugiej rury, stanowiącym inne tworzywo sztuczne lub metal. Przykładowo, poliolefmy na przykład polietylen, polipropylen i polibutylen bardzo trudno wiążą się z wieloma innymi materiałami, takimi jak nylon (poliamidy) i polichlorek winylu i dlatego w tego rodzaju zastosowaniach powyższy sposób nie jest stosowany. W rezultacie, do łączenia rur wykonanych z polietylenu lub innych materiałów, które nie wiążą się dobrze z innymi tworzywami sztucznymi lub z metalem stosowane są ogólnie mechaniczne środki łączące.However, there are applications where it is necessary to connect a plastic pipe that does not bond well to the other plastic or metal material of the other pipe. For example, polyolefins such as polyethylene, polypropylene and polybutylene bind very difficult to many other materials such as nylon (s) and polyvinyl chloride and therefore the above method is not used in such applications. As a result, mechanical coupling means are generally used to connect pipes made of polyethylene or other materials that do not bond well to other plastics or to metal.
Celem wynalazku jest opracowanie sposobu przeznaczonego do łączenia rury wykonanej z tworzywa sztucznego, które nie wiąże się dobrze z materiałem rury wykonanej z innych tworzyw sztucznych lub z metalu.The object of the invention is to provide a method for joining a plastic pipe which does not bond well to the material of the pipe made of other plastics or metal.
Sposób łączenia rury z tworzywa sztucznego z drugą rurą z materiału, który nie łączy się dobrze z tym tworzywem sztucznym, polegający na wkładaniu pierwszej rury z materiału plastycznego do pierwszego końca tulei i drugiej rury do przeciwległego końca tulei z tworzywa sztucznego, które wiąże się dobrze z tworzywem sztucznym, z którego jest wykonana pierwsza rura, która to tuleja na wewnętrznej powierzchni obydwu zakończeń posiada cewki z elektrycznego drutu grzejnego, i na doprowadzaniu prądu elektrycznego do tych cewek, według wynalazku charakteryzuje się tym, że przed włożeniem drugiej rury do przeciwległego zakończenia tulei, na to przeciwległe zakończenie tulei nakłada się materiał wiążący wybrany z grupy materiałów tworzących dobre wiązanie pomiędzy materiałami tulei i drugiej rury w wyniku doprowadzania ciepła, wytwarzanego przez prąd elektryczny, przy czym ten materiał wiążący nakłada się tak, aby po wsunięciu drugiej rury do przeciwległego końca tulei, materiał wiążący znajdował się pomiędzy drugą cewką i drugą rurą i w bezpośrednim z nimi kontakcie.A method of joining a plastic pipe to a second pipe of a material that does not bond well to the plastic by inserting a first pipe of plastic material at the first end of the sleeve and the second pipe at the opposite end of the plastic sleeve, which bonds well to the plastic sleeve. the plastic of which the first tube is made, the sleeve having electric heating wire coils on the inner surface of both ends, and by applying electric current to these coils, according to the invention, it is characterized in that, before inserting the second tube into the opposite end of the sleeve, a bonding material selected from the group of materials forming a good bond between the materials of the sleeve and the second tube by the application of heat generated by an electric current is applied to the opposite end of the sleeve, the bonding material being applied such that when the second tube is inserted into the opposite end of the sleeve found the binding material between the second coil and the second tube and in direct contact with them.
Jako drugą rurę stosuje się rurę wytworzoną z tworzywa sztucznego.A plastic pipe is used as the second pipe.
Materiał wiążący korzystnie nakłada się w postaci warstwy na elektryczny drut grzejny drugiej cewki, względnie w postaci powłoki na elektrycznym drucie grzejnym drugiej cewki, lub też w postaci wstępnie wytworzonej folii ponad drugą cewką.The bonding material is preferably applied as a layer on the electric heating wire of the second coil, or as a coating on the electric heating wire of the second coil, or as a preformed foil over the second coil.
Jako tworzywo sztuczne korzystnie stosuje się poliolefinę, względnie polietylen.The plastic used is preferably a polyolefin or polyethylene.
Jako materiał wiążący stosuje się kopolimer na bazie poliolefmy, zawierający aktywne grupy polarne, które po przyłożeniu ciepła rozwijają wolne rodniki, tworzące wiązania z grupami polarnymi poliolefiny, kontaktującej się z materiałem wiążącym, względnie kopolimer polietylenowy, który jako składnik aktywny zawiera bezwodnik kwasu maleinowego.The binder used is a polyolefin-based copolymer containing active polar groups which, upon application of heat, develop free radicals which form bonds with the polar groups of the polyolefin in contact with the binder, or a polyethylene copolymer which contains maleic anhydride as active ingredient.
Jako tuleję stosuje się tuleję wykonaną z tego samego tworzywa sztucznego, z którego jest wykonana pierwsza rura, i tym samym tworzywem sztucznym powleka się cewkę z elektrycznego drutu grzejnego.As a sleeve, a sleeve made of the same plastic as the first tube is used, and the electric heating wire coil is coated with the same plastic.
Zaleca się łączenie rur, z których jedna jest wykonana z poliolefiny, korzystnie polietylenu, zaś druga z nylonu poliamidu. Przy tego rodzaju materiałach, tuleja może również być wykonana z polietylenu. Jednakże sposób według wynalazku można stosować do rur wykonanych z odmiennych tworzyw sztucznych, które nie wiąŻą się dobrze ze sobą, na przykład do łączenia rury wykonanej z polipropylenu z druga rurą wykonana z innego materiału polarnego.It is preferable to join pipes, one of which is made of polyolefin, preferably polyethylene, and the other of nylon, polyamide. With such materials, the sleeve can also be made of polyethylene. However, the method according to the invention can be applied to pipes made of different plastics that do not bond well together, for example to connect a polypropylene pipe with a second pipe made of a different polar material.
Jako termoplastyczny materiał wiążący korzystnie stosuje się kopolimer na bazie poliolefiny, zawierający aktywne grupy polarne, które pod wpływem ciepła rozwijają wolne rodniki, które następnie tworzą wiązanie z dowolną grupą polarną lub materiałem polarnym, z którym się kontaktują. Jednym tego rodzaju materiałem jest kopolimer PE (polietylenu) z bezwodnikiem kwasu maleinowego, który pochodzi z kwasu maleinowego pozbawionego H2O. Następny przykład stanowi EVA z bezwodnikiem kwasu maleinowego. Znane są sformułowania przemysłowe tego rodzaju materiałówThe thermoplastic binder material is preferably a polyolefin-based copolymer containing active polar groups which, when exposed to heat, develop free radicals which then form a bond with any polar group or polar material with which they come into contact. One such material is PE (polyethylene) maleic anhydride copolymer which is derived from maleic acid devoid of H 2 O. Another example is EVA with maleic anhydride. Industrial formulations for this type of material are known
180 631180 631
Wynalazek przedstawiono w przykładzie wykonania na rysunku, na którym fig. 1 przedstawia podłużny przekrój połowy jednej postaci tulei do realizacji sposobu według wynalazku, fig. 2 - powiększony widok części jednej cewki z elektrycznego drutu grzejnego, znajdującej się w jednym zakończeniu tulei z fig. 1, fig. 3 - analogiczny powiększony widok części drugiej cewki z elektrycznego drutu grzejnego, znajdującej się w przeciwległym zakończeniu tulei, a fig. 4 - powiększony widok części drugiej postaci wykonania cewki z elektrycznego drutu grzejnego z fig. 3.The invention is illustrated by an embodiment in the drawing, in which Fig. 1 shows a longitudinal section of one half of an embodiment of a sleeve for carrying out the method of the invention, Fig. 2 - an enlarged view of a part of one electric heating wire coil in one end of the sleeve of Fig. 1. Fig. 3 is an analogous enlarged view of a portion of a second electric heating wire coil in the opposite end of the sleeve; and Fig. 4 is an enlarged view of a portion of the second embodiment of the electric heating wire coil of Fig. 3.
Przedstawiona na fig. 1 tuleja 2 jest wykonana z materiału termoplastycznego i ma utworzone gniazdo 3 na jednym zakończeniu dla pomieszczenia pierwszej rury P1 z tworzywa sztucznego oraz gniazdo 4 na przeciwległym zakończeniu dla pomieszczenia drugiej rury P2 przeznaczonej do połączenia z pierwszą rurą. Te dwa gniazda 3 i 4 są korzystnie oddzielone pierścieniowym występem 5 (lub innym wypustem) dla ograniczenia zasięgu wsunięcia dwóch rur w odpowiadające im gniazda tulei, przy czym te rury są ustawione współosiowo względem siebie.The sleeve 2 shown in Fig. 1 is made of a thermoplastic material and has a socket 3 at one end for receiving a first plastic pipe P1 and a socket 4 at the opposite end for receiving a second pipe P 2 to be connected to the first pipe. The two seats 3 and 4 are preferably separated by an annular protrusion 5 (or other protrusion) to limit the insertion distance of the two pipes into their respective sleeve seats, the pipes being coaxial to each other.
Tuleja 2 zawiera pierwszą cewkę 6 z elektrycznego drutu grzejnego, umieszczoną na wewnętrznej powierzchni jednego zakończenia tulei, obejmującą koniec rury P1 po włożeniu do gniazda 3 i drugą cewkę 7 (korzystnie odcinek cewki 6) z elektrycznego drutu grzejnego, umieszczona na wewnętrznej powierzchni przeciwległego zakończenia tulei, obejmującego koniec rury P2 po włożeniu do gniazda 4. Tuleja 2 zawiera ponadto elektryczne końcówki 8, 9 doprowadzające prąd elektryczny do cewki 6, 7 dla stopienia wewnętrznych powierzchni tulei 2 i zewnętrznych powierzchni rur Pv P2 z tworzywa sztucznego dla połączenia ich razem poprzez stapianie. Tuleja przedstawiona na fig. 1 i w szczególności opisana w odniesieniu do fig. 2 - 4 ma konstrukcję szczególnie przystosowaną do łączenia ze sobą poprzez stapianie rur wykonanych z jednego materiału, na przykład polarnego tworzywa sztucznego lub metalu, który nie wiąże się z polietylenem.The sleeve 2 comprises a first electric heating wire coil 6 positioned on the inner surface of one end of the sleeve, including the end of the tube P1 when inserted into the socket 3 and a second coil 7 (preferably coil section 6) of electric heating wire placed on the inner surface of the opposite end of the sleeve including the end of the tube P 2 after insertion into the seat 4. The sleeve 2 further comprises electric terminals 8, 9 for supplying electric current to the coil 6, 7 to melt the inner surfaces of the sleeve 2 and the outer surfaces of the plastic pipes P v P2 to join them together via fusion. The sleeve shown in Fig. 1 and in particular described with reference to Figs. 2-4 has a construction particularly adapted to be joined together by fusing pipes made of a single material, for example polar plastic or a metal that does not bond to polyethylene.
W opisanym poniżej przykładzie realizacji sposobu według wynalazku rura Pj umieszczona wewnątrz gniazda 3 jest wykonana z polietylenu, zaś rura P2 umieszczona w gnieździe 4 jest wykonana z nylonu, który nie wiąże się bezpośrednio z polietylenem, z którego jest wykonana rura Pv In the embodiment of the method according to the invention described below, the pipe Pj placed inside the socket 3 is made of polyethylene, and the pipe P2 placed in the socket 4 is made of nylon that does not bond directly to the polyethylene of which the pipe P v is made.
W tym przykładzie realizacji sposobu według wynalazku tuleja 2 jest również wykonana z polietylenu. Elektryczny drut grzejny cewki 6 jest również powleczony polietylenem, tworzącym powłokę 6a pokazaną na fig. 2. Gdy do cewki 6 jest doprowadzony prąd elektryczny, wówczas polietylenowa powłoka 6a ulega stopieniu w strefie stapiania Zx i podobnie sąsiednie powierzchnie tulei 2 i rura P1 wewnątrz gniazda 3 również ulegają stopieniu w tej strefie dla wytworzenia integralnego wiązania pomiędzy polietylenem tulei 2, polietylenem powłoki 6a i polietylenem plastikowej rury P[ umieszczonej w gnieździe 3. Strefy Z2 i Z3po przeciwległych stronach strefy Z1 stanowią strefy chłodniejsze, w których ogólnie nie następuje stapianie. Jednakże, ponieważ rura P2 jest wykonana z materiału, który nie wiąże się z polietylenem (w tym przykładzie z poliamidu), zatem cewka 7 zamykająca gniazdo 4 po przeciwległej stronie tulei 2, w którym znajduje się rura P2 nie jest wykonana dokładnie. W ten sam sposób co cewka 6. Tak więc, jak pokazano na fig. 3, elektryczny drut grzejny cewki 7 ma zewnętrzną warstwę materiału wiążącego, korzystnie w postaci powłoki 7a, który po ogrzaniu za pomocą cewki 7 może wytwarzać dobre wiązanie pomiędzy polietylenem tulei 2 i poliamidem rury P2. Szczególnie dobre rezultaty otrzymano, gdy jako materiał wiążący tworzący zewnętrzną powłokę 7a zastosowano kopolimer na bazie poliolefiny, zawierający aktywne grupy polarne, które po ogrzaniu rozwijają wolne rodniki, które następnie tworzą wiązanie z dowolną grupą polarną lub materiałem polarnym, który się z nim kontaktuje. Jednym z tego rodzaju materiałów jest kopolimer PE (polietylenu) z bezwodnikiem kwasu maleinowego o wzorze, który pochodzi z kwasu maleinowego po usunięciu H2O. Następnym przykładem jest EVA (octan etylowinylowy) z bezwodnikiem kwasu maleinowego. Gdy do cewki 7 jest doprowadzony prąd elektryczny, to zewnętrzna powłoka 7a zostaje aktywowana w wyniku ogrzania dla wytworzenia mocnego wiązania pomiędzy polietylenem tulei 2In this embodiment of the method according to the invention, the sleeve 2 is also made of polyethylene. The electric heating wire of the coil 6 is also coated with polyethylene, forming the sheath 6a shown in Fig. 2. When an electric current is applied to the coil 6, the polyethylene sheath 6a is fused at the fusion zone Z x and similarly the adjacent surfaces of the sleeve 2 and the tube P 1 inside. seats 3 are also fused in this zone to form an integral bond between the sleeve polyethylene 2, the shell polyethylene 6a and the polyethylene of the plastic pipe P [placed in seat 3. Zones Z2 and Z 3 on opposite sides of zone Z1 are cooler zones in which generally no fusion. However, since the pipe P2 is made of a material that does not bond to polyethylene (in this example polyamide), the coil 7 closing the socket 4 on the opposite side of the sleeve 2 where the pipe P2 is located is not made exactly. In the same way as coil 6. Thus, as shown in Fig. 3, the electric heating wire of coil 7 has an outer layer of binding material, preferably in the form of a sheath 7a, which, when heated by coil 7, can produce a good bond between the polyethylene of the sleeve 2. and polyamide P2 pipe. Particularly good results have been obtained when a polyolefin-based copolymer containing active polar groups was used as the binding material forming the outer skin 7a, which when heated, develop free radicals which then form a bond with any polar group or polar material contacting it. One such material is a PE (polyethylene) copolymer with maleic anhydride of formula that is derived from maleic acid after removal of H 2 O. Another example is EVA (Ethylvinyl Acetate) with maleic acid anhydride. When an electric current is applied to the coil 7, the outer shell 7a is activated by heating to create a strong bond between the polyethylene of the sleeve 2.
180 631 i poliamidem rury P2 w strefie stapiania leżącej poniżej cewki 7, odpowiadającej strefie Z, leżącej poniżej cewki 6 przy zakończeniu tulei, zawierającym rurę Pp 180 631 and the polyamide tube P 2 in the melting zone of the underlying coil 7, corresponding to the zone Z, the underlying coil 6 at the end of a sleeve, comprising a pipe P p
Sposób według wynalazku zapewnia również mocne wiązanie z powłoką 7a i drutem cewki 7, przez co minimalizuje się lub eliminuje możliwość powstania toru przecieku pomiędzy tą powłoką a drutem, co może być szczególnie niebezpieczne w przypadku stosowania tak połączonych rur do prowadzenia paliw gazowych. Na fig. 4 przedstawiono drugą postać wykonania cewki z fig. 3, w której materiał wiążący, tworzący dobre wiązanie pomiędzy polietylenem tulei 12 i materiałem (na przykład poliamidem) rury Pj z tworzywa sztucznego, jest w postaci wstępnie wytworzonej folii 17b ułożonej ponad cewką 7 i kontaktującej się z rurą P2 po włożeniu do gniazda 4.The method according to the invention also provides a strong bond with the sheath 7a and the wire of the coil 7, thereby minimizing or eliminating the possibility of a leakage path between the sheath and the wire, which can be particularly dangerous when using pipes so connected to guide gaseous fuels. Fig. 4 shows a second embodiment of the coil of Fig. 3 in which the bonding material, which forms a good bond between the polyethylene of the sleeve 12 and the material (e.g. polyamide) of the plastic pipe Pj, is in the form of a pre-fabricated film 17b arranged above the coil 7. and in contact with the P2 pipe when inserted into the socket 4.
Tak więc, jak pokazano na fig. 4, tuleja 12 jest wykonana z polietylenu jak opisano powyżej, jednakże w tym przypadku elektryczny drut grzejny cewki 17, umieszczonej w zakończeniu tulei 12 z utworzonym gniazdem dla pomieszczenia rury P2 jest również powleczony powłoką 17a z polietylenu (zamiast materiału wiążącego), zaś materiał wiążący jest nałożony jako wstępnie wytworzona folia 17b, przykrywająca od spodu całą cewkę 17. Folia 17b materiału wiążącego służy tym samym jako powierzchnia pośrednia pomiędzy polietylenową powłoką 17a a materiałem rury P2. Gdy do cewki 17 jest doprowadzony prąd elektryczny, wówczas polietylenowa powłoka 17a ulega stopieniu i zostaje integralnie związana z polietylenem tulei 12, a materiał wiążący wstępnie wytworzonej folii 17b zostaje aktywowany cieplnie i tworzy dobre wiązanie pomiędzy polietylenową powłoką 17a i sąsiednią powierzchnią poliamidowej rury P2.Thus, as shown in Fig. 4, the sleeve 12 is made of polyethylene as described above, however in this case the electric heating wire of the coil 17 placed in the end of the sleeve 12 with a seat formed to accommodate the pipe P 2 is also coated with a polyethylene sheath 17a. (instead of the bonding material) and the bonding material is applied as a pre-fabricated film 17b that covers the entire coil 17. The bonding material film 17b thus serves as an interface between the polyethylene sheath 17a and the pipe material P 2 . When an electric current is applied to the coil 17, the polyethylene sheath 17a melts and becomes integrally bonded with the polyethylene of the sleeve 12, and the bonding material of the preformed film 17b is heat-activated and forms a good bond between the polyethylene sheath 17a and the adjacent polyamide pipe P2 surface.
Należy zauważyć, że w przypadku tulei 12 pokazanej na fig. 4, konstrukcja tulei 12 i cewki przy przeciwległym końcu tej tulei dla pomieszczenia rury P, z tworzywa sztucznego są takie same jak opisano w odniesieniu do fig. 2.It should be noted that, in the case of the sleeve 12 shown in Fig. 4, the structure of the sleeve 12 and the coil at the opposite end of the sleeve to accommodate the plastic pipe P are the same as described with reference to Fig. 2.
Prawidłowe wiązanie pomiędzy drutem cewki i rurą, jak opisano powyżej w odniesieniu do fig. 3 i fig. 4, znacząco redukuje możliwość wystąpienia toru przecieku pomiędzy drutem i plastikową rurą, co może być szczególnie niebezpieczne w przypadku rur z tworzywa sztucznego, prowadzących gazowe paliwo pod ciśnieniem.Proper bonding between the coil wire and the pipe, as described above with reference to Figs. 3 and 4, significantly reduces the possibility of a leakage path between the wire and the plastic pipe, which can be particularly dangerous in plastic pipes that carry gas fuel underneath. pressure.
180 631180 631
Departament Wydawnictw UP RP. Nakład 60 egz.Publishing Department of the UP RP. Circulation of 60 copies
Cena 2,00 zł.Price PLN 2.00.
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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IL11536495A IL115364A0 (en) | 1995-09-20 | 1995-09-20 | Electrofusion method and device |
PCT/IL1996/000113 WO1997010944A1 (en) | 1995-09-20 | 1996-09-18 | Electrofusion method and device |
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PL325555A1 PL325555A1 (en) | 1998-08-03 |
PL180631B1 true PL180631B1 (en) | 2001-03-30 |
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PL96325555A PL180631B1 (en) | 1995-09-20 | 1996-09-18 | Electrofusion apparatus and method |
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EP (1) | EP0851807A1 (en) |
CN (1) | CN1061293C (en) |
AU (1) | AU702442B2 (en) |
HK (1) | HK1016538A1 (en) |
IL (1) | IL115364A0 (en) |
NZ (1) | NZ318060A (en) |
PL (1) | PL180631B1 (en) |
WO (1) | WO1997010944A1 (en) |
ZA (1) | ZA967825B (en) |
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CN100451426C (en) * | 2007-04-25 | 2009-01-14 | 钟世全 | Low-carbon steel heating wire PE electric melting pipe fittings |
CN102042455A (en) * | 2010-12-29 | 2011-05-04 | 广东联塑科技实业有限公司 | Simple and easy hot melting technology for connection of PVC pipe |
CN110657305A (en) * | 2019-09-29 | 2020-01-07 | 谭连平 | Combined sealing connection method for plastic pipes |
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GB695027A (en) * | 1950-08-15 | 1953-08-05 | Raymond James Mitchell | Improvements in or relating to connecting means for pipes and tubes |
JPS527016A (en) * | 1975-07-08 | 1977-01-19 | Mitsui Petrochem Ind Ltd | Connecting method of polyolefin system resin pipe |
US4029837A (en) * | 1975-08-14 | 1977-06-14 | William C. Heller, Jr. | Composite plastic-metallic bonding means and method |
FR2516439A1 (en) * | 1981-11-13 | 1983-05-20 | Armosig | Electrically fusible liners for thermoplastic pipework joints - pre-assembled by partial fusion for satisfactory alignment |
JPS59184611A (en) * | 1983-04-05 | 1984-10-20 | Showa Denko Kk | High-frequency welding method of thermoplastic resin |
GB9308277D0 (en) * | 1993-04-21 | 1993-06-02 | Raychem Sa Nv | Article and method for modifying the surface of a substrate |
JPH07253187A (en) * | 1994-03-15 | 1995-10-03 | Sekisui Chem Co Ltd | Tube fitting |
-
1995
- 1995-09-20 IL IL11536495A patent/IL115364A0/en unknown
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1996
- 1996-09-17 ZA ZA967825A patent/ZA967825B/en unknown
- 1996-09-18 CN CN96198169A patent/CN1061293C/en not_active Expired - Fee Related
- 1996-09-18 NZ NZ318060A patent/NZ318060A/en unknown
- 1996-09-18 EP EP96930342A patent/EP0851807A1/en not_active Withdrawn
- 1996-09-18 AU AU69425/96A patent/AU702442B2/en not_active Ceased
- 1996-09-18 PL PL96325555A patent/PL180631B1/en not_active IP Right Cessation
- 1996-09-18 WO PCT/IL1996/000113 patent/WO1997010944A1/en not_active Application Discontinuation
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WO1997010944A1 (en) | 1997-03-27 |
CN1201416A (en) | 1998-12-09 |
HK1016538A1 (en) | 1999-11-05 |
IL115364A0 (en) | 1995-12-31 |
AU6942596A (en) | 1997-04-09 |
AU702442B2 (en) | 1999-02-18 |
PL325555A1 (en) | 1998-08-03 |
NZ318060A (en) | 1999-09-29 |
CN1061293C (en) | 2001-01-31 |
EP0851807A1 (en) | 1998-07-08 |
ZA967825B (en) | 1997-03-20 |
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