GB2203689A - Plastics piping connector sealing ring - Google Patents

Plastics piping connector sealing ring Download PDF

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Publication number
GB2203689A
GB2203689A GB08805475A GB8805475A GB2203689A GB 2203689 A GB2203689 A GB 2203689A GB 08805475 A GB08805475 A GB 08805475A GB 8805475 A GB8805475 A GB 8805475A GB 2203689 A GB2203689 A GB 2203689A
Authority
GB
United Kingdom
Prior art keywords
sealing ring
connector
fixed
connector according
welding
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08805475A
Other versions
GB2203689B (en
GB8805475D0 (en
Inventor
Hans Guitoneau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renolit Nederland BV
Original Assignee
Draka Polva BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Draka Polva BV filed Critical Draka Polva BV
Publication of GB8805475D0 publication Critical patent/GB8805475D0/en
Publication of GB2203689A publication Critical patent/GB2203689A/en
Application granted granted Critical
Publication of GB2203689B publication Critical patent/GB2203689B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/06—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end
    • F16L47/08—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket
    • F16L47/10—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with sleeve or socket formed by or in the pipe end with sealing rings arranged between the outer surface of one pipe end and the inner surface of the sleeve or socket, the sealing rings being placed previously in the sleeve or socket the sealing rings being maintained in place by additional means
    • 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
    • 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • 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
    • 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
    • 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
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • 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
    • B29C66/5224—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces
    • B29C66/52241—Joining tubular articles for forming fork-shaped connections, e.g. for making Y-shaped pieces with two right angles, e.g. for making T-shaped pieces
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/534—Joining single elements to open ends of tubular or hollow articles or to the ends of bars
    • B29C66/5344—Joining single elements to open ends of tubular or hollow articles or to the ends of bars said single elements being substantially annular, i.e. of finite length, e.g. joining flanges to tube ends
    • 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
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • 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
    • B29C66/731—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 intensive physical properties of the 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
    • B29C66/73—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
    • B29C66/737—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 state of the material of the parts to be joined
    • B29C66/7375—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 state of the material of the parts to be joined uncured, partially cured or fully cured
    • B29C66/73753—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 state of the material of the parts to be joined uncured, partially cured or fully cured the to-be-joined area of at least one of the parts to be joined being partially cured, i.e. partially cross-linked, partially vulcanized
    • 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
    • B29C66/739—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 material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—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 material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/02—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
    • F16L17/03—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket having annular axial lips
    • F16L17/032—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket having annular axial lips the sealing rings having only one lip
    • 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
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin welding
    • B29C65/0672—Spin welding
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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"
    • 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
    • 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
    • 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
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/08—PVDC, i.e. polyvinylidene chloride
    • 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
    • B29K2031/00—Use of polyvinylesters or derivatives thereof as moulding material
    • B29K2031/04—Polymers of vinyl acetate, e.g. PVAc, i.e. polyvinyl acetate
    • 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
    • B29K2105/0085—Copolymers
    • 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
    • B29K2105/0088—Blends of polymers
    • 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
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • 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
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0046—Elastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/24—Pipe joints or couplings

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

DESCRIPTION
2203689 PLASTICS PLPING CONNECTION SEALING MEMBER The present invention relates to a connector for pipework made of vinyl chloride-based resin, comprising a thermoplastic rubber sealing ring fixed in place by weld ing in the connector.
It has already been proposed to make connectors for pipework from plastic employing a thermoplastic rub ber sealing ring fixed by welding in the connector.
Thus, in Belgian Patent A-861021 and in French Patent Application A-2,444,864, a connector made from potyolefin which is equipped with a sealing ring made of ethylene-propylene-diene-methylene rubber vulcanised in sulphur or with a sulphur-donating substance, which can be fixed in place by welding in the connector, is disclosed.
However, it is not a valid proposition to fix a sealing ring made from a material of this kind by welding in a pipework connector made from vinyl chloride-based resin, on account of a lack of compatibility.
Admittedly, in Belgian Patent A-867993, it has been proposed to make pipework connectors from vinyl chlo ride-based resin, equipped with a thermoplastic rubber sealing ring obtained from plasticised polyvinyl chloride compositions containing nitrile rubber and polyurethane which is fixed by welding, but, to obtain satisfactory products in this case, it is necessary to subject at least one of the connector components to an irradiation with very penetrating radiation for the purpose of producing crosstinking. In this technique, it is accordingly neces sary to use compositions based on plasticised polyvinyl chloride, in which compositions the desired crosstinking reaction predominates over the degradation induced by the 2 crossLinking. In any case, to make such connectors, it is necessary to have recoum tQ an irradiation ptant, to arrange for an irradiation stage and to take aLL the pre cautions which are essentiaL in irradiation operations.
It is has now been found that it is possibLe, in conventionaL production pLants, to produce connectors for pipework made of vinyL chLoricle-based resin comprising a thersopLastic rubber seaLing ring which can be fixed in pLace in the connectors by weLding, this being accompLi shed without the need to perform any kind of irradiation treatment.
The invention-accorclingLy reLates to a connector for pipework made of vinyL chLoricle-based resin, compri sing a thermopLastic rubber seaLing ring fixed by weLding in the connector, in which the seaLing ring is made from a partiaLLy vuLcanised mixture of a copoLymer of ethyLene with at Least one copoLymerizabLe comonomer and 5 to 75%, and preferabLy 20 to 60%., by weight based on the mixture, of a vinyL or vinyLiclene haLicle poLymer.
VinyL chLoricle-based resin is understood to denote homopoLymers of vinyL chLoricle as weLL as copoLymers con taining at Least 50 moL % of units derived from vinyL chLoricle.
Among the comonomers which can be copoLymerized with ethyLene, ethyLenicaLLy unsaturated monomers such as mono- or clicarboxyLic acids and the esters derived there from, vinyL esters, acryLic or methacryLic monomers, car bon monoxide and suLphur dioxide are generaLLy preferred.
The vinyL or vinyLiclene haLicle poLymer can be a homopoLymer or a copoLymer containing, in particuLar, units derived from vinyL esters, from acryLonitriLe, from acryLic esters, from vinyL or vinyLiclene chLoricle, from unsaturated carboxyLic acids or from vinyL ethers, the pre ferred poLymer being poLyvinyL chLoricle.
Mixtures which are especiaLLy suitabLe for making the seaLing ring, as weLL as the method for manufacturing them, are described in the document EP-A-0,101,833, the content of which is accordingLy incorporated in the pre sent description by reference.
3 The mixtures for making the sealing ring of the connector according to the invention are specially vulcanised, pre ferably to a gel content of 10 to 70% measured by dissolu tion in tetrahydrofuran, as described in the document EP-A-0,101,833 cited above.
These mixtures can also contain customary addi- tives, such as filler materials, lubricants, stabilisers andlor plasticisers.
Mixtures which are especially suitable for making the sealing ring of the connelctor according to the inven tion are produced and sold by the firm E.I. du PONT de NEMOURS under the trade name "ALCRYC. These mixtures re main thermally stable up to at least 2000C, can be readily moulded by injection or compression in conventional plants and require no vulcanisation operation during their moulding.
According to a first variant of embodiment of the connector for pipework according to the invention, the sealing ring and the connector made of vinyl chloride based resin can be separately moulded by customary techni ques such as compression moulding, injection moulding or thermoforming, the moulding of the sealing ring being car ried out at a temperature of between 140 and 1900C. In this case, the previously moulded sealing ring is then in troduced into the connector and fixed in place by welding, by a conventional fechnique.such as hot plate welding, ultrasonic welding, electrical resistance welding, fric tion welding, high-frequency welding or vibration welding.
The sealing ring can obviously be shaped in such a way that the fixing thereof is carried out on an inner andlor outer face of the connector. A fixing on the outer face of the connector can, in fact, prove useful when it is desired to protect the end of the connector against impact.
When the fixing is carried out by the hot plate welding technique, a plate temperature of 200 to 2400C, a welding pressure of 0.1 to 0.3 N1mm 2 and a welding time of 15 to 60 seconds are generally employed.
According to another variant of embodiment of the connector for pipework which proves less expensive, the 4 connector and the seaLing ring can be aLtered simuLtaneousLy by the co-injection technique, as described, in particuLar, in the documents BE-A-838058, BE-A-853292, EP-A-0,031,620, EP-A-0,188,012, EP-A-0,189,300 and EP-A-0,188,301. In this case, the temperature of injection of the materiaL forming the seaLing ring is chosen so as to provide for the direct fixing by weLding of the mouLded seaLing ring in -the connector.
According to a third variant, the seaLing ring, equipped with a rigid reiaining ring made of pLastic, pre ferabLy poLyvinyL chLoride, fixed by weLding, can be pro duced separateLy, for exampLe by the co-injection technique and this assembLy is then inserted and fixed by weLding via the retaining ring in the mouLded connector. A tech nique of this type is described in the document GB-A 2,144,190.
In the connector according to the invention, it is aLso possibLe, if so desired, to mouLd a seaLing ring reinforced with a metaL or other internaL insert. This insert can, in particuLar, be an eLectric resistance in the case where a subsequent fixing by eLectric weLding is envisaged.
The connector for pipework according to the inven- tion can be either an end-to-end spigot-and-socket connec tor of any type, or a branch connector as described in the document BE-A-833318.
The connector for pipework according to the inven- tion is Mustrated by the figures in the atiached draw ings, wherein Figures 1 to 3 show a partiaL view of the variants of possibLe embodiment of spigot-and-socket con nectors, and Figure 4 a view of a branch connector. In these figures, the thermopLastic rubber seaLing ring 1 according to the invention is fixed by a weLd 2 on the inner and/or outer waLLs of the connector 3 mouLded in rigid poLyvinyL chLoride.
The connector for pipework according to the inven- tion is aLso Mustrated by the description which foLLows of an exampLe of practicaL embodiment of a connector of the type Mustrated in Fig. 2.
ExampLe
A sea Ling ring having the profiLe shown in Fig. 2 is made by transfer mouLding using granuLes of ALCRYN re sin, of Shore A hardness 70, as the materiaL.
For this purpose, a measured quantity of the mate- riaL is pLaced in the die maintained at 1800C and, after a heating time of 10 minutes, compression mouLding is per formed. After the die has been cooLed to room tempera ture, the mouLded seaLing ring is extracted.
The seaLing ring thereby obtained is then fixed on the end of the poLyvinyL chLoride connector, premouLded by thermoforming, by the hot pLate weLding technique. For this purpose, the pLate is maintained at 2200C, the weLd ing pressure appLied is 0.2 N/mm 2 and the weLding time is 30 seconds.
After cooLing, it is found that the seaLing ring is compLeteLy weLded onto the connector., and that this ring tears when an attempt is made to strip it from the connector, this occurring without the weLd yieLding.
It will be understood that the invention has been described above purely by way of example, and that various modifications of detail can be made within the ambit of the invention.
i - 6 -

Claims (11)

1. Connector for pipework made of vinyL chLoride based resin, comprising a thermopLastic rubber seaLing ring made from a partiaLLy vuLcanised mixture of a copoLy mer of ethyLene with at Least one copoLymerizabLe monomer and 5 to 75%, by weight based on the mixture, of a vinyL or vinyLidene haLide poLymer, characterized in that the seaLing ring is fixed in the connector by weLding.
2. Connector according to CLaim 1, characterized in that the seaLing ring is fixed by weLding by the hot pLate technique.
3. Connector according to CLaim 1, characterized in that the seaLing ring is fixed by uLtrasonic weLding.
4. Connector according to CLaim 1, characterized in that the seaLing ring is fixed by friction weLding.
5. Connector according to CLaim 1, characterized in that the seaLing ring is fixed by eLectric weLding.
6. Connector according to CLaim 1, characterized in that the seaLing ring is fixed by high-frequency weLding.
7. Connector according to CLaim 1, characterized in that the seaLing ring is made and fixed by co-injection.
8. Connector according to CLaim 1, characterized in that the seaLing ring is fixed by weLding onto a fixing ring made of vinyL chLoride-based resin, which is then firmLy united to the connector.
9. Connector according to CLaim 1, characterized in that the seaLing ring is fixed by co-injection on to a fixing ring made of vinyL chLoride-based resin, which is then firmLy united to the connector.
10. Connector according to claim 1, substantially as described with reference to any Figure or Figures of the accompanying drawings.
11. Connector according to claim 1, substantially as described in the foregoing Example.
Published 1988 at The Patent Office. State House, 66P71 High Holborn, London WClR 4TP. Ruther copies may be obtained from The Patent office, Sales Branch, St Mary Cray, Orpington, Kent BR5 3RD. Printed by Multiplex techniques ltd, St Mary Cray, Kent. Con. 1/87.
GB8805475A 1987-03-09 1988-03-08 Plastics pipework connector assembly Expired - Lifetime GB2203689B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8703298A FR2612118B1 (en) 1987-03-09 1987-03-09 CONNECTION FOR RESIN PIPING BASED ON VINYL CHLORIDE COMPRISING A THERMOPLASTIC RUBBER SEALING RING

Publications (3)

Publication Number Publication Date
GB8805475D0 GB8805475D0 (en) 1988-04-07
GB2203689A true GB2203689A (en) 1988-10-26
GB2203689B GB2203689B (en) 1990-10-31

Family

ID=9348832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8805475A Expired - Lifetime GB2203689B (en) 1987-03-09 1988-03-08 Plastics pipework connector assembly

Country Status (8)

Country Link
AT (1) AT397992B (en)
BE (1) BE1006026A3 (en)
DE (1) DE3807593C2 (en)
ES (1) ES2006103A6 (en)
FR (1) FR2612118B1 (en)
GB (1) GB2203689B (en)
NL (1) NL194642C (en)
PT (1) PT86914B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286148A (en) * 1994-02-02 1995-08-09 Glynwed Plastics Securing thermosetting elastomeric and thermoplastics components together
GB2431135A (en) * 2005-10-11 2007-04-18 Uponor Innovation Ab Heated wire thermoplastic and elastomer bonding
US20110280650A1 (en) * 2008-11-21 2011-11-17 Newfrey Llc Joining component and method for production of a joining component

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1393549B1 (en) * 2009-04-03 2012-04-27 Coes S P A JOINT FOR HYDRAULIC SEALING OF PIPES OR FITTINGS, PARTICULARLY IN POLYPROPYLENE, FOR HYDRAULIC LOW PRESSURE PLANTS.

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EP0101833A2 (en) * 1982-07-01 1984-03-07 E.I. Du Pont De Nemours And Company Thermoplastic elastomeric compositions based on compatible blends of an ethylene copolymer and vinyl or vinylidene halide polymer

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GB1477074A (en) * 1975-01-31 1977-06-22 Hepworth Iron Co Ltd Manufacture of pipe couplings
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FR2405122A2 (en) * 1976-11-22 1979-05-04 Pont A Mousson PIPING ELEMENT CONSTITUTING A JOINT AND DEVICE FOR ITS MANUFACTURE
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ATE35645T1 (en) * 1985-01-14 1988-07-15 Wavin Bv METHOD FOR MAKING A GASKET BODY, ESPECIALLY FOR A PIPE JOINT, AND MOLD FOR MAKING A GASKET BODY.
NL8500073A (en) * 1985-01-14 1986-08-01 Wavin Bv METHOD FOR MANUFACTURING A SEAL BODY, PARTICULARLY FOR A TUBE CONNECTION AND A SEAL BODY MADE ACCORDING TO THIS METHOD.
ATE64985T1 (en) * 1985-01-14 1991-07-15 Wavin Bv PLASTIC PIPE BODY OF THERMOPLASTIC MATERIAL JOINED WITH A THERMOPLASTIC ELASTOMER SEALING ELEMENT AND PIPE PART OR CONNECTION JOINED WITH SUCH PLASTIC PIPE BODY.

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EP0101833A2 (en) * 1982-07-01 1984-03-07 E.I. Du Pont De Nemours And Company Thermoplastic elastomeric compositions based on compatible blends of an ethylene copolymer and vinyl or vinylidene halide polymer

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286148A (en) * 1994-02-02 1995-08-09 Glynwed Plastics Securing thermosetting elastomeric and thermoplastics components together
GB2286148B (en) * 1994-02-02 1997-10-01 Glynwed Plastics Securing elastomeric and thermoplastics components together
GB2431135A (en) * 2005-10-11 2007-04-18 Uponor Innovation Ab Heated wire thermoplastic and elastomer bonding
GB2431135B (en) * 2005-10-11 2008-06-18 Uponor Innovation Ab Bonding thermoplastic and elastomeric members
US20110280650A1 (en) * 2008-11-21 2011-11-17 Newfrey Llc Joining component and method for production of a joining component
US8556532B2 (en) * 2008-11-21 2013-10-15 Newfrey Llc Joining component

Also Published As

Publication number Publication date
AT397992B (en) 1994-08-25
DE3807593A1 (en) 1988-09-22
PT86914B (en) 1995-03-31
PT86914A (en) 1989-03-30
NL8800562A (en) 1988-10-03
DE3807593C2 (en) 1997-07-10
FR2612118B1 (en) 1989-06-16
GB2203689B (en) 1990-10-31
NL194642C (en) 2002-10-04
FR2612118A1 (en) 1988-09-16
GB8805475D0 (en) 1988-04-07
BE1006026A3 (en) 1994-04-26
ATA61088A (en) 1993-12-15
NL194642B (en) 2002-06-03
ES2006103A6 (en) 1989-04-01

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732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070308