KR101293794B1 - Electro foaming and fusion sheet for connecting underground pipes - Google Patents

Electro foaming and fusion sheet for connecting underground pipes Download PDF

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Publication number
KR101293794B1
KR101293794B1 KR1020110104136A KR20110104136A KR101293794B1 KR 101293794 B1 KR101293794 B1 KR 101293794B1 KR 1020110104136 A KR1020110104136 A KR 1020110104136A KR 20110104136 A KR20110104136 A KR 20110104136A KR 101293794 B1 KR101293794 B1 KR 101293794B1
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KR
South Korea
Prior art keywords
weight
sheet
polyethylene
electro
resin
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Application number
KR1020110104136A
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Korean (ko)
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KR20130039523A (en
Inventor
주수영
Original Assignee
주수영
(주)파텍
주식회사 아주미
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Priority to KR1020110104136A priority Critical patent/KR101293794B1/en
Publication of KR20130039523A publication Critical patent/KR20130039523A/en
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    • 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
    • F16L47/02—Welded joints; Adhesive joints
    • F16L47/03—Welded joints with an electrical resistance incorporated in the joint
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8145—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81471—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the constructional aspects of the pressing elements, e.g. of the welding jaws or clamps being a wrap-around tape or band
    • 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
    • B29C65/3428—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 said at least a single wire having a waveform, e.g. a sinusoidal form
    • 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
    • B29C65/3432—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 comprising several wires, e.g. in the form of several independent windings
    • 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
    • B29C65/3444—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 being a ribbon, band or strip
    • B29C65/3452—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 being a ribbon, band or strip forming a sleeve, e.g. a wrap-around sleeve
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5007—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like
    • B29C65/5021—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like characterised by the structure of said adhesive tape, threads or the like being multi-layered
    • 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
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5042—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like covering both elements 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
    • B29C66/01—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
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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
    • B29C66/1142—Single butt to 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
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • 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
    • B29C66/347—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients
    • B29C66/3472—General aspects dealing with the joint area or with the area to be joined using particular temperature distributions or gradients; using particular heat distributions or gradients in the plane of the joint, e.g. along the joint line in the plane of the joint or perpendicular to the joint line in the plane of the joint
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B29C66/496—Internally supporting the, e.g. tubular, article during joining using a support which remains in the joined object
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • 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
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • 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
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/828—Other pressure application arrangements
    • B29C66/8286—Hand placed clamps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • 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
    • B29C65/344—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 being a woven or non-woven fabric or being a mesh
    • 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

Abstract

본 발명은 지중에 매설되는 하수관 또는 우수관으로서 폴리프로필렌으로 제작된 파이프를 전기융착 및 발포에 의하여 완전 밀폐가 가능하도록 연결할 수 있도록 한 지중매설관 연결용 전기발포융착시트를 제공한다. 본 발명의 전기발포융착시트는 폴리에틸렌 미발포시트(102), 전열선네트(104)과, 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(108)로 구성된다.The present invention provides an electro-foamed fusion sheet for underground buried pipe connection to connect the pipe made of polypropylene as a sewer pipe or rain pipe embedded in the ground so that it can be completely sealed by electrofusion and foaming. The electro-foamed fusion sheet of the present invention is composed of a polyethylene unfoamed sheet 102, a heating wire net 104, and a hybrid sheet 108 of polyethylene resin and polypropylene resin.

Figure R1020110104136
Figure R1020110104136

Description

지중매설관 연결용 전기발포융착시트{ELECTRO FOAMING AND FUSION SHEET FOR CONNECTING UNDERGROUND PIPES}ELECTRO FOAMING AND FUSION SHEET FOR CONNECTING UNDERGROUND PIPES}

본 발명은 지중매설관 연결용 전기발포융착시트에 관한 것으로, 특히 지중에 매설되는 하수관 또는 우수관으로서 폴리프로필렌으로 제작된 파이프를 전기융착 및 발포에 의하여 완전 밀폐가 가능하도록 연결할 수 있도록 한 지중매설관 연결용 전기발포융착시트에 관한 것이다.The present invention relates to an electro-foamed fusion sheet for underground buried pipe connection, in particular underground buried pipe that can be connected to enable the complete sealing of the pipe made of polypropylene as a sewer pipe or rain pipe buried in the ground by electrofusion and foaming It relates to an electro-foaming fusion sheet for connection.

종래 하수관 또는 우수관을 구성하는 폴리에틸렌 또는 폴리프로필렌 재질의 두 파이프의 연결단부 주위에 권취하여 이들 파이프의 연결단부상에 융착될 수 있도록 하는 연결밴드가 알려진 바 있다. 이러한 연결밴드는 폴리에틸렌과 같은 합성수지 시트로 이루어지며, 그 내측면에 전열선이 지그재그 형태로 배치되고 연결밴드를 두 파이프의 연결단부상에 권취하여 전압을 인가하는 경우 전열선의 발열에 의하여 연결밴드의 일부가 용융되어 연결될 두 파이프의 연결단부에 융착될 수 있도록 한 것이 알려져 있다. 그러나 이러한 종래기술의 연결밴드는 전열선에 전압을 인가하여 발열되게 하는 경우 전열선이 열팽창하여 인접한 전열선 부분과 단락이 일어나는 결점이 있어 인가되는 전압의 레벨과 전압을 인가하는 시간을 정확히 맞추어주어야 하는 불편함이 있으며, 연결밴드의 열전도성이 낮아 연결밴드가 파이프에 전체적이고 균일하게 융착되지 못하는 결점이 있다.Conventionally, a connection band is known to be wound around a connection end of two pipes made of polyethylene or polypropylene constituting a sewage pipe or storm pipe to be fused onto the connection end of these pipes. The connection band is made of a synthetic resin sheet such as polyethylene, and heating wires are arranged in a zigzag form on the inner side thereof, and when the connection bands are wound on the connection ends of the two pipes to apply a voltage, a part of the connection bands is generated by heating of the heating wires. It is known that it can be melted and fused at the connecting end of two pipes to be connected. However, the connection band of the prior art has a drawback that the heating wire is thermally expanded and short-circuited with adjacent heating wire parts when a heating voltage is applied to the heating wire, thereby making it inconvenient to accurately match the level of the applied voltage and the time of applying the voltage. In addition, there is a drawback that the connection band is not thermally and uniformly fused to the pipe due to the low thermal conductivity of the connection band.

기존의 전기융착 방식의 폴리에틸렌 융착시트는 전기에 의해 폴리에틸렌 하수관의 외면과 폴리에틸렌 융착시트를 녹이면서 융착하는 원리이다. 이러한 방식은 연결하고자 하는 관의 공차가 발생한 관의 연결 시 공차를 메우지 못하여 누수가 발생할 수 있으며, 폴리에틸렌 하수관에 융착시트를 중첩하는 과정에서 공극이 발생하는 문제가 있었다.Conventional electrofusion of the polyethylene fusion sheet is a principle of melting while melting the outer surface of the polyethylene sewer pipe and the polyethylene fusion sheet by electricity. In this method, a leak may occur because the tolerance of the pipe to be connected cannot be filled when the pipe is connected, and there is a problem in that a gap occurs in the process of overlapping the fusion sheet on the polyethylene sewer pipe.

이러한 문제를 해결하기 위하여 본 출원인은 대한민국 등록특허공보 제10-1015273호에서 두 개의 폴리에틸렌 하수관을 전기 융착에 의해 연결하는 방법에 관한 것으로, 발포 및 융착되어 완전히 밀폐가 가능하도록 하는 파이프 이음용 시트조성물과, 이를 이용한 전기발포융착용 시트의 제조방법 및 지중매설관의 연결장치를 개시한 바 있다. 그러나 이러한 시트조성물 및 연결장치는 폴리에틸렌 재질의 파이프에 적합한 것으로, 폴리프로필렌 재질의 파이프에 적용 시 융착이 안되는 문제가 있었다.In order to solve this problem, the present applicant relates to a method for connecting two polyethylene sewer pipes by electric fusion in Korean Patent Publication No. 10-1015273, and a pipe joint sheet composition which is capable of being completely sealed by foaming and fusion. And, it has been disclosed a method for manufacturing an electro-foaming fusion sheet using the same and a connection device of the underground buried pipe. However, such a sheet composition and the connection device is suitable for the pipe of polyethylene material, there was a problem that it is not fused when applied to the pipe of polypropylene material.

대한민국 등록특허공보 제10-1015273호(2011.02.18)Republic of Korea Patent Publication No. 10-1015273 (2011.02.18)

본 발명은 종래의 문제점을 해소하기 위한 것으로, 본 발명은 지중에 매설되는 하수관 또는 우수관으로서 폴리프로필렌으로 제작된 파이프를 전기융착 및 발포에 의하여 완전 밀폐가 가능하도록 연결할 수 있도록 한 지중매설관 연결용 전기발포융착시트을 제공하고자 한다.The present invention is to solve the conventional problems, the present invention is for sewage pipes or underground pipes buried in the ground to connect the pipes made of polypropylene so that it can be completely sealed by electrofusion and foaming for underground pipe connection It is intended to provide an electrofoaming sheet.

본 발명은 폴리프로필렌으로 제작되는 하수관 또는 우수관과 같은 지중매설관을 연결하는데 사용되는 전기발포융착시트에 관한 것이다. 구체적으로 단부와 단부가 접합되어 연결되는 두 폴리프로필렌계 파이프의 연결단부상에 권취되어 전기융착방식으로 고정되는 전기발포융착시트에 관한 것이다.The present invention relates to an electro-foamed fusion sheet used to connect underground buried pipes such as sewage pipes or rain pipes made of polypropylene. More specifically, the present invention relates to an electrofoaming fusion sheet, which is wound on a connection end of two polypropylene pipes which are joined and connected to each other by an end.

이를 위하여, 본 발명의 전기발포융착시트는 다음의 두 가지 양태를 포함하며, 이들에 제한되는 것은 아니다.To this end, the electrofoaming sheet of the present invention includes the following two embodiments, but is not limited thereto.

본 발명은 첫번째 양태는 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%를 포함하는 베이스수지 100 중량부에 대하여, 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%, 발포제 1 ~ 10 중량% 및 첨가제 0.1 ~ 5 중량%를 포함하는 마스터배치 1 ~ 10 중량부를 포함하는 폴리에틸렌 미발포시트; 전열선이 지그재그로 배열된 전열선패널을 갖는 그물망 형태의 전열선네트와; 합지용 접착성수지층에 의하여 상기 폴리에틸렌 미발포시트와 접착되는 고밀도폴리에틸렌 40 ~ 60 중량%, 폴리프로필렌 40 ~ 60 중량%를 포함하는 혼성시트를 포함한다.The present invention the first embodiment is a base resin comprising 30 to 50% by weight of low density polyethylene, 5 to 20% by weight of high density polyethylene, 10 to 30% by weight of metallocene polyethylene-based elastomer, 20 to 40% by weight of maleic anhydride graft copolymer 30 to 50% by weight of low density polyethylene, 5 to 20% by weight of high density polyethylene, 10 to 30% by weight of metallocene polyethylene elastomer, 20 to 40% by weight of maleic anhydride graft copolymer, and foaming agents 1 to 10 parts by weight Polyethylene unfoamed sheet comprising 1 to 10 parts by weight of the masterbatch including 0.1% to 5% by weight of the additive; Heating wire nets having a heating wire panel in which heating wires are arranged in zigzag; It includes a hybrid sheet comprising 40 to 60% by weight of the high-density polyethylene, 40 to 60% by weight of polypropylene bonded to the polyethylene non-foamed sheet by a laminated adhesive resin layer.

상기 합지용 접착성수지층은 변성 폴리에틸렌 접착수지를 포함한다.The laminated adhesive resin layer includes a modified polyethylene adhesive resin.

또한, 필요에 따라 상기 합지용 접착성수지층은 스티렌부타디엔스티렌수지, 스티렌이소프렌스티렌수지, 스티렌부타디엔부틸렌스티렌수지, 스티렌에틸렌부틸렌스티렌수지, 스티렌에틸렌프로필렌스티렌수지 및 이들의 산무수물 그라프트 변성수지에서 선택되는 어느 하나 또는 둘 이상의 블렌드물을 0.1 ~ 10 중량% 더 포함한다.Further, if necessary, the adhesive resin layer for lamination may include styrene butadiene styrene resin, styrene isoprene styrene resin, styrene butadiene butylene styrene resin, styrene ethylene butylene styrene resin, styrene ethylene propylene styrene resin, and acid anhydride graft modified resins thereof. Any one or two or more blends selected from includes 0.1 to 10% by weight further.

또한, 필요에 따라 상기 합지용 접착성수지층은 에틸렌과 메타크릴산의 공중합체, 에틸렌과 아크릴산의 공중합체에서 선택되는 이오노머를 0.1 ~ 10 중량% 더 포함한다.In addition, if necessary, the adhesive resin layer for lamination further includes 0.1 to 10% by weight of an ionomer selected from a copolymer of ethylene and methacrylic acid and a copolymer of ethylene and acrylic acid.

본 발명의 전기발포융착시트는 상기 혼성시트의 외면에 폴리프로필렌계 접착성수지의 외면접착수지층을 더 포함할 수 있다.The electro-foamed fusion sheet of the present invention may further include an outer adhesive resin layer of a polypropylene-based adhesive resin on the outer surface of the hybrid sheet.

본 발명의 두번째 양태는 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%를 포함하는 베이스수지 100 중량부에 대하여, 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%, 발포제 1 ~ 10 중량% 및 첨가제 0.1 ~ 5 중량%를 포함하는 마스터배치 1 ~ 10 중량부를 포함하는 폴리에틸렌 미발포시트; 전열선이 지그재그로 배열된 전열선패널을 갖는 그물망 형태의 전열선네트와; 합지용 접착성수지층에 의하여 상기 폴리에틸렌 미발포시트와 접착되는 40 ~ 60 중량%의 선형 저밀도 폴리에틸렌계열의 접착성수지와, 40 ~ 60 중량%의 폴리프로필렌계열의 접착성수지로 혼합되어 구성되는 혼성시트를 포함한다.The second embodiment of the present invention is a base resin comprising 30 to 50% by weight of low density polyethylene, 5 to 20% by weight of high density polyethylene, 10 to 30% by weight of metallocene polyethylene-based elastomer, 20 to 40% by weight of maleic anhydride graft copolymer 30 to 50% by weight of low density polyethylene, 5 to 20% by weight of high density polyethylene, 10 to 30% by weight of metallocene polyethylene elastomer, 20 to 40% by weight of maleic anhydride graft copolymer, and foaming agents 1 to 10 parts by weight Polyethylene unfoamed sheet comprising 1 to 10 parts by weight of the masterbatch including 0.1% to 5% by weight of the additive; Heating wire nets having a heating wire panel in which heating wires are arranged in zigzag; A hybrid sheet composed of 40 to 60% by weight of a linear low density polyethylene series adhesive resin bonded to the polyethylene non-foamed sheet by a laminated adhesive resin layer and 40 to 60% by weight of an adhesive resin of polypropylene series. It includes.

본 발명의 다른 실시형태에서 상기 합지용 접착성수지층은 선형 저밀도 폴리에틸렌수지 또는 변성 폴리에틸렌 접착수지를 포함한다.In another embodiment of the present invention, the adhesive resin layer for lamination includes a linear low density polyethylene resin or a modified polyethylene adhesive resin.

또한 필요에 따라 상기 합지용 접착성수지층은 스티렌부타디엔스티렌수지, 스티렌이소프렌스티렌수지, 스티렌부타디엔부틸렌스티렌수지, 스티렌에틸렌부틸렌스티렌수지, 스티렌에틸렌프로필렌스티렌수지 및 이들의 산무수물 그라프트 변성수지에서 선택되는 어느 하나 또는 둘 이상의 블렌드물을 0.1 ~ 10 중량% 더 포함한다.In addition, if necessary, the adhesive resin layer for lamination is styrene butadiene styrene resin, styrene isoprene styrene resin, styrene butadiene butylene styrene resin, styrene ethylene butylene styrene resin, styrene ethylene propylene styrene resin and acid anhydride graft modified resin It further comprises 0.1 to 10% by weight of any one or two or more blends selected.

또한, 필요에 따라 상기 합지용 접착성수지층은 에틸렌과 메타크릴산의 공중합체, 에틸렌과 아크릴산의 공중합체에서 선택되는 이오노머를 0.1 ~ 10 중량% 더 포함한다.In addition, if necessary, the adhesive resin layer for lamination further includes 0.1 to 10% by weight of an ionomer selected from a copolymer of ethylene and methacrylic acid and a copolymer of ethylene and acrylic acid.

본 발명의 전기발포융착시트는 상기 혼성시트의 외면에 폴리프로필렌계 접착성수지의 외면접착수지층을 더 포함할 수 있다.The electro-foamed fusion sheet of the present invention may further include an outer adhesive resin layer of a polypropylene-based adhesive resin on the outer surface of the hybrid sheet.

본 발명을 첨부도면에 의거하여 보다 상세히 설명하면 다음과 같다.Referring to the present invention in more detail based on the accompanying drawings as follows.

도 1은 본 발명의 전기발포융착시트가 지지시트 및 조임밴드와 함께 사용되는 것을 보인 사시도.
도 2와 도 3은 본 발명의 전기발포융착시트를 이용하여 폴리프로필렌계 파이프를 연결하는 것을 보인 사시도와 단면도.
도 4는 본 발명 전기발포융착시트의 제1 실시형태의 성층구조를 도식적으로 보인 사시도.
도 5(a)(b)(c)는 본 발명 전기발포융착시트의 여러 실시형태들을 보인 도식적인 단면도.1 is a perspective view showing that the electro-foam welding sheet of the present invention is used with a support sheet and a tightening band.
2 and 3 are a perspective view and a cross-sectional view showing the connection of a polypropylene-based pipe using the electro-foam welding sheet of the present invention.
Figure 4 is a perspective view schematically showing the layer structure of the first embodiment of the present invention an electrofoaming sheet.
Figure 5 (a) (b) (c) is a schematic cross-sectional view showing several embodiments of the present invention an electrofoaming sheet.

본 발명의 전기발포융착시트(10)는 도 1에서 보인 바와 같이 지지시트(12) 및 조임밴드(14)와 함께 사용되며, 지중에 매설되는 하수관 또는 우수관을 구성하는 폴리프로필렌계 파이프(16)의 단부와 단부를 연결하는데 사용된다. 전기발포융착시트(10)는 이후 상세히 설명되는 바와 같이, 그리고 잘 알려진 바와 같이, 내부에 2조의 전열선패널(18a)(18b)이 배열되어 있다. 이들 전열선패널(18a)(18b)은 사용방법에 따라서 전원이 동시에 인가되거나 각각 시간적인 차이를 두고 독립적으로 전원이 인가될 수 있다. 도시된 예에서는 2조의 전열선패널이 배열되어 있는 것을 보이고 있으나, 이러한 전열선패널은 짝수의 다수 조로 배열될 수 있으며, 전원은 이들 전부의 전열선패널에 인가되거나 전기발포융착시트의 길이방향으로 양분된 그룹의 전열선패널에 독립적으로 전원이 인가될 수 있다. 전열선패널(18a)(18b)에는 전원인가를 위한 연결단자(20)가 구비되어 있어 있으며 이들 전열선패널의 발열시 온도제어를 위한 온도센서가 구비될 수 있다.The electro-foamed fusion sheet 10 of the present invention is used with the support sheet 12 and the tightening band 14, as shown in Figure 1, polypropylene pipe 16 constituting the sewer pipe or rain pipe embedded in the ground It is used to connect the end with the end. The electro-foamed fusion sheet 10 has two sets of heating wire panels 18a and 18b arranged therein, as will be described in detail later, and as is well known. The heating wire panels 18a and 18b may be powered at the same time depending on the method of use, or may be independently supplied with a time difference. In the example shown, two sets of heating panels are arranged, but the heating panels can be arranged in an even number of sets, and the power is applied to all of the heating panels, or a group divided in the longitudinal direction of the electro-foaming sheet. Power can be applied independently to the heating panel. The heating wire panels 18a and 18b are provided with a connection terminal 20 for applying power, and a temperature sensor for temperature control at the time of heating of the heating wire panels may be provided.

도 2 및 도 3에서 보인 사용예는 본 발명의 전기발포융착시트(10)가 연결될 폴리프로필렌계 파이프(16)의 일측단부에 연결수단으로서 구성되어 편수관의 형태로 사용되는 예를 보인 것이다. 조임밴드(14)는 양단부에 밴드클램프부(22)가 형성되어 있고 이에 볼트공이 형성된 지지봉(24)이 삽입되며 사용시 대향된 지지봉(24)에 볼트(26)를 관통시켜 너트(28)로 조일 수 있게 되어 있다. 본 발명의 전기발포융착시트(10), 지지시트(12) 및 조임밴드(14)의 조합을 폴리프로필렌계 파이프(16)에 편수관의 형태로 사용되는 경우, 먼저 파이프(16)의 일측단부에 전기발포융착시트(10)의 반부분이 권취되고 조임밴드(14)로 체결함 상태에서 전기발포융착시트(10)의 반부분의 전열선(18a)에 전원을 인가하여 전기발포융착시트(10)의 반부분의 발포융착으로 전기발포융착시트(10)가 편수관의 형태로 파이프(16)에 고정되게 한다. 이후, 파이프(16)의 매설현장에서 연결될 파이프의 단부를 조임밴드(14)가 느슨히 해제된 상태에 있는 전기발포융착시트(10)의 다른 반부분에 삽입하고 다시 조임밴드(14)로 조여 체결 후 전기발포융착시트(10)의 다른 반부분의 전열선(18b)에 전원을 인가하여 전기발포융착시트(10)의 다른 반부분의 발포융착으로 두 파이프(16)의 단부와 단부가 누수없이 연결될 수 있도록 하는 것이다.The use example shown in Figures 2 and 3 shows an example that is used in the form of a single-handed pipe is configured as a connecting means at one end of the polypropylene-based pipe 16 to be connected to the electro-foamed fusion sheet 10 of the present invention. The tightening band 14 has a band clamp portion 22 formed at both ends thereof, and a supporting rod 24 having a bolt hole is inserted therein, and the bolt 26 is passed through the supporting rod 24 facing each other to be tightened with a nut 28. It is supposed to be. When the combination of the electro-foamed fusion sheet 10, the support sheet 12 and the tightening band 14 of the present invention is used in the form of a single pipe in the polypropylene pipe 16, first at one end of the pipe 16 In the state where the half of the electro-foaming sheet 10 is wound and fastened with a tightening band 14, the electric foaming-fusion sheet 10 is applied by applying power to the heating wires 18a of the half-section of the electro-foaming sheet 10. The foamed fusion of the half portion of the electro-foamed fusion sheet 10 to be fixed to the pipe 16 in the form of a single-handed pipe. Subsequently, the end of the pipe to be connected at the buried site of the pipe 16 is inserted into the other half of the electro-foamed welding sheet 10 in which the tightening band 14 is loosely released, and then tightened by the tightening band 14 again. After fastening, power is applied to the heating wire 18b of the other half of the electro-foamed fusion sheet 10, and foamed fusion of the other half of the electro-foamed fusion sheet 10 causes the ends and ends of the two pipes 16 to leak. To be connected.

이와 같은 본 발명의 전기발포융착시트(10)는 특히 폴리프로필렌계 파이프(16)의 연결을 위하여 사용되는 것이 특징이다.Such an electro-foaming sheet 10 of the present invention is characterized in particular used for the connection of the polypropylene-based pipe (16).

이를 위하여, 본 발명 제1 실시형태의 전기발포융착시트(10)는 도 4 및 도 5에서 보인 바와 같이, 폴리에틸렌 미발포시트(102), 전열선네트(104)와, 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106)로 구성된다.To this end, the electro-foamed fusion sheet 10 of the first embodiment of the present invention, as shown in Figures 4 and 5, the polyethylene unfoamed sheet 102, the heating wire net 104, the polyethylene resin and the polypropylene resin It consists of the hybrid sheet 106.

보다 구체적으로, 본 발명의 전기발포융착시트(10)는 다음과 같은 양태의 구성요소의 성층구조를 가질 수 있으며, 이들에 제한되는 것은 아니다.More specifically, the electro-foamed fusion sheet 10 of the present invention may have a layered structure of the components of the following aspects, it is not limited thereto.

먼저, 본 발명의 제 1 양태는 도 5(a)에 도시된 바와 같이, 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%를 포함하는 베이스수지 100 중량부에 대하여, 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%, 발포제 1 ~ 10 중량% 및 첨가제 0.1 ~ 5 중량%를 포함하는 마스터배치 1 ~ 10 중량부를 포함하는 폴리에틸렌 미발포시트(102);First, the first embodiment of the present invention, as shown in Figure 5 (a), low density polyethylene 30-50% by weight, high density polyethylene 5-20% by weight, metallocene polyethylene-based elastomer 10-30% by weight, maleic anhydride Based on 100 parts by weight of the base resin containing 20 to 40% by weight of the graft copolymer, 30 to 50% by weight of low density polyethylene, 5 to 20% by weight of high density polyethylene, 10 to 30% by weight of metallocene polyethylene elastomer, maleic anhydride Polyethylene unfoamed sheet 102 comprising 1 to 10 parts by weight of the masterbatch including 20 to 40% by weight of the graft copolymer, 1 to 10% by weight of the blowing agent and 0.1 to 5% by weight of the additive;

그물망(networking)의 베이스에 지그재그의 형태로 전열선이 배열된 적어도 2조의 전열선패널(18a, 18b)로 구성되는 전열선네트(104)와;A heating wire net 104 composed of at least two heating wire panels 18a and 18b in which heating wires are arranged in a zigzag form at a base of a network;

합지용 접착성수지층(108)에 의하여 상기 폴리에틸렌 미발포시트(102)에 합지되는 고밀도폴리에틸렌 40 ~ 60 중량%, 폴리프로필렌 40 ~ 60 중량%를 포함하는 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106)A hybrid sheet of polyethylene resin and polypropylene resin comprising 40 to 60 wt% of high density polyethylene and 40 to 60 wt% of polypropylene laminated on the polyethylene unfoamed sheet 102 by the adhesive adhesive layer 108 for lamination 106 )

를 포함한다..

도 5(b)는 본 발명 전기발포융착시트(10)의 제2 실시양태를 보인 것으로, 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106)의 외면에 전기융착시 폴리프로필렌계 파이프(16)와의 보다 효과적인 접착성을 얻기 위하여 이러한 혼성시트(106)의 구성시에 코팅되는 외면접착성수지층(110)이 형성되어 있는 것을 제외하고는 상기 언급된 제1 실시형태의 구성과 동일하다.Figure 5 (b) shows a second embodiment of the electro-foaming sheet 10 of the present invention, the polypropylene-based pipe (16) when the electro-fusion on the outer surface of the hybrid sheet 106 of polyethylene resin and polypropylene resin It is the same as that of the above-mentioned first embodiment except that the outer adhesive resin layer 110 is coated at the time of constructing the hybrid sheet 106 in order to obtain more effective adhesiveness.

도 5(c)는 본 발명 전기발포융착시트(10)의 제3 실시양태를 보인 것으로, 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106')가 상기 합지용 접착성수지층(108)의 주성분인 선형 저밀도 폴리에틸렌계의 접착성수지 40 ~ 60 중량%와 상기 외면접착성수지층(110)의 주성분인 폴리프로필렌계 접착성수지 40 ~ 60 중량%의 혼합물로 구성되는 것을 제외하고는 상기 언급된 제1 실시형태의 구성과 동일하다.5 (c) shows a third embodiment of the present invention, the electro-foamed fusion sheet 10, wherein the hybrid sheet 106 'of polyethylene resin and polypropylene resin is the main component of the adhesive adhesive layer 108 for lamination. The above-mentioned first except that it consists of a mixture of 40 to 60% by weight of the linear low density polyethylene-based adhesive resin and 40 to 60% by weight of the polypropylene-based adhesive resin as the main component of the outer adhesive resin layer 110. It is the same as the structure of embodiment.

이와 같은 본 발명 제3 실시형태의 혼성시트(106')는 선형 저밀도 폴리에틸렌계열 접착성수지의 성분에 의하여 발포융착의 주체가 되는 폴리에틸렌 미발포시트(102)와의 상호작용으로 강력한 접착력을 보이고 폴리프로필렌계열의 접착성수지의 성분에 의하여 연결될 폴리프로필렌계 파이프(16)의 외면에 대하여 용융결합에 의한 강력한 접착력을 보이는 것으로 확인되었다.
The hybrid sheet 106 ′ according to the third embodiment of the present invention exhibits strong adhesion by interacting with the polyethylene non-foamed sheet 102, which is the main agent of foam fusion, by the components of the linear low density polyethylene series adhesive resin. It was confirmed that strong adhesion by melt bonding to the outer surface of the polypropylene-based pipe 16 to be connected by the components of the series of adhesive resins.

이하는 본 발명의 각 구성요소에 대하여 보다 구체적으로 설명한다.Hereinafter, each component of the present invention will be described in more detail.

폴리에틸렌 미발포시트(102)Polyethylene Unfoamed Sheet (102)

먼저, 폴리에틸렌 미발포시트(102)에 대하여 설명하면, 폴리에틸렌 미발포시트는 저밀도폴리에틸렌, 고밀도폴리에틸렌, 말레인산 무수물 그라프트 공중합체, 메탈로센 폴리에틸렌계 엘라스토머를 포함하는 베이스수지 100 중량부에 대하여, 저밀도폴리에틸렌, 고밀도폴리에틸렌, 말레인산 무수물 그라프트 공중합체, 메탈로센 폴리에틸렌계 엘라스토머, 발포제 및 첨가제를 포함하는 마스터배치 1 ~ 10 중량부를 포함하여 융점이 낮고, 파이프와의 수밀성이 우수하다. 폴리에틸렌 미발포 시트는 발포제의 발포온도 이하의 온도에서 용융압출이 가능하므로 시트 제조 시에는 발포제가 발포되지 않으며, 이후 전열선네트(104)와 합지하여 전기발포융착용 시트를 제조하고 전기를 인가하여 발포제의 발포온도 이상의 온도로 가열함으로써 발포시트로 제조하는데 특징이 있다.First, the polyethylene unfoamed sheet 102 will be described. The polyethylene unfoamed sheet has a low density with respect to 100 parts by weight of a base resin containing a low density polyethylene, a high density polyethylene, a maleic anhydride graft copolymer, and a metallocene polyethylene-based elastomer. It has a low melting point and excellent water tightness with a pipe including 1-10 parts by weight of a masterbatch including polyethylene, high density polyethylene, maleic anhydride graft copolymer, metallocene polyethylene elastomer, foaming agent and additives. Since the polyethylene non-foamed sheet can be melt-extruded at a temperature below the foaming temperature of the foaming agent, the foaming agent is not foamed at the time of manufacture of the sheet. It is characterized in that the foam sheet is produced by heating to a temperature above the foaming temperature.

구체적으로, 폴리에틸렌 미발포시트(102)의 조성물은 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%를 포함한다.Specifically, the composition of the polyethylene non-foamed sheet 102 is 30 to 50% by weight of low density polyethylene, 5 to 20% by weight of high density polyethylene, 10 to 30% by weight of metallocene polyethylene-based elastomer, maleic anhydride graft copolymer 20 to 40 Contains weight percent.

상기 저밀도폴리에틸렌은 굴곡강도를 유지하면서도 탄성을 유지하기 위하여 사용되는 것으로, 멜트인덱스(MI)가 2 ~ 4g/10분(190℃, 2.16kg)인 것을 사용하는 것이 굴곡강도 및 탄성이 우수하므로 바람직하다. 그 함량은 30 ~ 50 중량%를 사용하는 것이 압출 시 용융흐름성이 향상되며, 용융온도를 낮출 수 있으므로 바람직하다.The low density polyethylene is used to maintain elasticity while maintaining the bending strength, the melt index (MI) of 2 ~ 4g / 10 minutes (190 ℃, 2.16kg) is preferably used because of excellent bending strength and elasticity Do. The content of 30 to 50% by weight is preferable because it improves the melt flow during extrusion and can lower the melting temperature.

상기 고밀도폴리에틸렌은 멜트인덱스(MI)가 20 ~ 30g/10분(190℃, 2.16kg)인 것을 사용하는 것이 굴곡강도 및 탄성이 우수하므로 바람직하다. 그 함량은 5 ~ 20 중량%를 사용하는 것이 바람직하다. 20 중량%를 초과하는 경우 용융온도가 상승되거나, 시트의 유연성이 감소할 수 있다.The high-density polyethylene is preferably used because the melt index (MI) is 20 ~ 30g / 10 minutes (190 ℃, 2.16kg) because of excellent bending strength and elasticity. The content is preferably used 5 to 20% by weight. If it exceeds 20% by weight, the melting temperature may be increased or the flexibility of the sheet may be reduced.

상기 메탈로센 폴리에틸렌계 엘라스토머는 시트의 용융온도를 발포제의 발포온도 이하로 낮추고, 시트 제조 시 파이프와의 접착성 및 수밀성을 향상시키기 위하여 사용되는 구성으로, 메탈로센계 촉매를 이용하여 제조된 폴리에틸렌계 엘라스토머를 포함한다. 구체적으로는 멜트인덱스(MI)가 1 ~ 5g/10분(190℃, 2.16kg)인 것을 사용하는 것이 접착성 및 수밀성을 향상시키므로 바람직하다. 함량은 10 ~ 30 중량%범위에서 첨가함으로써 시트 압출 시 수지의 용융온도를 발포제의 발포 온도 이하의 온도로 낮출 수 있다.The metallocene polyethylene-based elastomer is used to lower the melting temperature of the sheet below the foaming temperature of the foaming agent, and to improve adhesion and watertightness with the pipe when the sheet is manufactured. Polyethylene manufactured by using a metallocene catalyst System-based elastomers. Specifically, it is preferable to use a melt index (MI) of 1 to 5 g / 10 minutes (190 ° C., 2.16 kg) because it improves adhesiveness and water tightness. By adding the content in the range of 10 to 30% by weight, the melt temperature of the resin during sheet extrusion can be lowered to a temperature below the foaming temperature of the blowing agent.

상기 말레인산 무수물 그라프트 공중합체는 시트 조성물의 접착성을 향상시켜 파이프와의 수밀성을 향상시키고, 발포제와의 혼화성을 향상시키기 위하여 사용되는 것이다. 상기 말레인산 무수물 그라프트 공중합체는 발포제가 시트 내에 고르게 분포하도록 함으로써 고르게 발포될 수 있도록 하는 역할도 한다. 상기 말레인산 무수물 그라프트 공중합체는 무수말레인산 그라프트 저밀도폴리에틸렌(MAH-g-LDPE), 무수말레인산 그라프트 선형저밀도폴리에틸렌(MAH-g-LLDPE), 무수말레인산 그라프트 고밀도폴리에틸렌(MAH-g-HDPE), 무수말레인산 그라프트 에틸렌비닐아세테이트(MAH-g-EVA) 등이 사용가능하다. 상기 말레인산 무수물 그라프트 공중합체는 각각 주쇄 100 중량부에 대하여 무수말레인산 0.1 내지 10 중량부로 이루어지는 것이 바람직하다. 더욱 바람직하게는 멜트인덱스(MI)가 0.7 ~ 3.5g/10분(190℃, 2.16kg)인 것을 사용하는 것이 접착성이 향상되며 발포제와의 혼화성을 향상시킬 수 있는 물성을 나타내므로 바람직하다. 함량은 20 ~ 40 중량%를 사용하는 것이 바람직하며, 상기 범위에서 접착성이 향상될 수 있다.The maleic anhydride graft copolymer is used to improve the adhesion of the sheet composition to improve the watertightness with the pipe and to improve the miscibility with the blowing agent. The maleic anhydride graft copolymer also serves to make the foaming agent evenly distributed by distributing the blowing agent evenly in the sheet. The maleic anhydride graft copolymer is maleic anhydride graft low density polyethylene (MAH-g-LDPE), maleic anhydride graft linear low density polyethylene (MAH-g-LLDPE), maleic anhydride graft high density polyethylene (MAH-g-HDPE) , Maleic anhydride graft ethylene vinyl acetate (MAH-g-EVA) and the like can be used. The maleic anhydride graft copolymer is preferably composed of 0.1 to 10 parts by weight of maleic anhydride based on 100 parts by weight of the main chain. More preferably, a melt index (MI) of 0.7 to 3.5 g / 10 minutes (190 ° C., 2.16 kg) is preferable because it improves adhesiveness and exhibits physical properties that can improve miscibility with a blowing agent. . The content is preferably used 20 to 40% by weight, the adhesion can be improved in the above range.

접착성을 더욱 향상시키기 위하여 비닐아세테이트 단위가 5~30중량% 함유된 비닐아세테이트계 수지를 더 포함할 수 있다. 보다 구체적으로 비닐아세테이트 함량이 5~30중량%인 에틸렌-비닐아세테이트 공중합체를 사용하는 것이 더욱 바람직하다. 통상 비닐아세테이트 함량이 높아질수록 피착제에 대한 점착강도가 높아지며, 점착강도가 너무 높으면 발포성이 저하될 우려가 있고, 반대로 점착강도가 너무 낮으면 쉽게 박리되는 문제가 있으므로 이를 고려하여 적정한 함량 수준을 선정하는 것이 중요하다. 따라서 비닐아세테이트 함량은 0.1 ~ 10 중량% 범위에서 사용하는 것이 점착성을 향상시킬 수 있으므로 바람직하다.In order to further improve the adhesiveness, the vinyl acetate unit may further include a vinyl acetate resin containing 5 to 30% by weight. More specifically, it is more preferable to use an ethylene-vinylacetate copolymer having a vinyl acetate content of 5 to 30% by weight. In general, the higher the vinyl acetate content, the higher the adhesive strength to the adherend, and if the adhesive strength is too high, the foaming property may be lowered. On the contrary, if the adhesive strength is too low, there is a problem of easily peeling off. It is important to do. Therefore, the vinyl acetate content is preferably used in the range of 0.1 to 10% by weight because it can improve the adhesiveness.

다음으로 마스터배치에 대하여 설명한다. 상기 컴파운딩 시 발포제를 혼합하여 컴파운딩하지 않고, 별도의 마스터배치를 제조하여 사용함으로써 수지의 용융온도를 낮출 수 있으며, 압출성을 보다 향상시킬 수 있다. 상기 마스터배치는 니더에서 100 ~ 130℃로 10분 ~ 6시간 동안 혼련한 후 펠렛화 함으로써, 각각의 수지의 물성이 상승되도록 한다.Next, the master batch will be described. In the compounding, the melting temperature of the resin can be lowered and the extrudability can be further improved by preparing and using a separate master batch without mixing and compounding the blowing agent. The masterbatch is kneaded at a kneader at 100 to 130 ° C. for 10 minutes to 6 hours, and then pelletized to increase physical properties of each resin.

상기 마스터배치는 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%, 발포제 1 ~ 10 중량% 및 첨가제 0.1 ~ 5 중량%를 포함한다. 여기서 저밀도폴리에틸렌, 고밀도폴리에틸렌, 메탈로센 폴리에틸렌계 엘라스토머 및 말레인산 무수물 그라프트 공중합체는 앞서 베이스수지에서 설명한 바와 같으므로 더 이상의 설명은 생략한다.The masterbatch is 30 to 50% by weight of low density polyethylene, 5 to 20% by weight of high density polyethylene, 10 to 30% by weight of metallocene polyethylene-based elastomer, 20 to 40% by weight of maleic anhydride graft copolymer, 1 to 10% by weight of blowing agent And 0.1 to 5% by weight of the additive. Here, the low density polyethylene, the high density polyethylene, the metallocene polyethylene-based elastomer, and the maleic anhydride graft copolymer are the same as described above in the base resin, and thus, further description thereof will be omitted.

상기 발포제는 화학적인 발포제로서, 아조디카본아마이드(Azodicarbonamide, ADCA), 아조디이소부틸로니트릴(ABBN), 디니트로소펜타메틸테트라아민(DNPT), 파라톨루엔설포닐하이드라지드(TSH) 및 옥시비스벤젠설포닐하이드라지드(OBSH)로부터 선택되는 어느 하나 또는 둘 이상의 혼합물을 사용할 수 있다. 이중 바람직하게는 아조디카본아마이드(Azodicarbonamide, ADCA)을 사용한다. 상기 발포제의 발포온도는 165 ~ 195℃이다. 상기 발포제는 연결하고자 하는 관의 조건, 즉, 관종, 관경 등의 조건을 고려하여 발포제의 함량을 결정한다. 마스터배치 제조 시 사용되는 발포제의 함량은 1 ~ 10 중량%를 사용하는 것이 혼화성이 우수하므로 바람직하다. The blowing agent is a chemical blowing agent, azodicarbonamide (ADPA), azodiisobutylonitrile (ABBN), dinitrosopentamethyltetraamine (DNPT), paratoluenesulfonylhydrazide (TSH) and Any one or a mixture of two or more selected from oxybisbenzenesulfonylhydrazide (OBSH) can be used. Of these, azodicarbonamide (ADCA) is preferably used. The foaming temperature of the blowing agent is 165 ~ 195 ℃. The blowing agent determines the content of the blowing agent in consideration of the conditions of the pipe to be connected, that is, the tube type, diameter, and the like. The content of the blowing agent used in the production of the masterbatch is preferably 1 to 10% by weight because of excellent miscibility.

상기 첨가제는 윤활제, 안료, 산화방지제, 자외선안정제, 충전제에서 선택되는 어느 하나 또는 둘 이상의 혼합물을 사용할 수 있다. The additive may be any one or a mixture of two or more selected from lubricants, pigments, antioxidants, UV stabilizers, fillers.

상기 첨가제로 윤활제로는 칼슘 스테아레이트, 아연 스테아레이트, 마그네슘 스테아레이트, 알루미늄 스테아레이트, 글리세린 스테아레이트, 부틸스테아레이트, 고체 파라핀, 유동파라핀 등을 사용할 수 있으며, 윤활제를 첨가하는 경우 발포제와 수지간의 혼화성을 더욱 향상시킬 수 있다.As the additive, lubricants include calcium stearate, zinc stearate, magnesium stearate, aluminum stearate, glycerin stearate, butyl stearate, solid paraffin, liquid paraffin, etc. Miscibility can be further improved.

이상에서 설명한 폴리에틸렌 미발포시트 제조용 수지조성물은 베이스수지 100 중량부에 대하여, 마스터배치 1 ~ 10 중량부를 혼합하여 압출기를 통해 용융압출하여 펠렛으로 제조한다. 이 때 용융압출 온도는 발포제의 발포온도 이하의 온도를 유지하여야 미발포 상태의 시트를 얻을 수 있다. 일반적인 폴리에틸렌 시트를 제조하기 위한 압출 가공온도는 200 ~ 230℃인데, 이 범위에서 압출하는 경우는 압출기 내부에서 발포가 일어나게 되므로 미발포 시트를 생산할 수 없다. 따라서 이러한 현상이 발생하지 않도록 발포제의 발포온도인 165 ~ 195℃이하에서 용융 압출하는 것이 바람직하다. The resin composition for producing the polyethylene non-foamed sheet described above is mixed with 100 parts by weight of the base resin, 1 to 10 parts by weight of the masterbatch and melt-extruded through an extruder to produce pellets. At this time, the melt extrusion temperature should be maintained at a temperature below the foaming temperature of the blowing agent to obtain an unfoamed sheet. Extrusion processing temperature for producing a general polyethylene sheet is 200 ~ 230 ℃, when extruding in this range is not possible to produce an unfoamed sheet because the foaming occurs inside the extruder. Therefore, it is preferable to melt-extrude at a foaming temperature of the blowing agent 165 ~ 195 ℃ or less so that this phenomenon does not occur.

전열선네트(104)Electric heating net (104)

전열선네트(104)는 도 1 및 도 5에서 개략적으로 보인 바와 같이 전열선패널(18a)(18b)의 예에서는 2조의 전열선패널이 배열되어 있는 것을 보이고 있으나, 이러한 전열선패널은 짝수의 다수조로 배열되어 양분된 그룹의 전열선에 독립적으로 전원이 인가될 수 있다. 전열선패널(18a)(18b)에는 연결단자(20)를 통하여 전원이 인가된다.As the heating wire net 104 is schematically shown in Figs. 1 and 5, the heating wire panels 18a and 18b show two sets of heating wire panels, but the heating wire panels are arranged in an even number of sets. Power can be applied independently to the dividing group of heating wires. Power is applied to the heating wire panels 18a and 18b through the connection terminal 20.

혼성시트(106)Mixed Sheet (106)

본 발명의 제 1 양태에서 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106)는 고밀도폴리에틸렌 40 ~ 60 중량%, 폴리프로필렌 40 ~ 60 중량%를 포함한다. 상기 혼성시트(106)는 폴리프로필렌계 파이프와 상기 폴리에틸렌계 미발포시트가 잘 접착되도록 하는 역할을 한다. 상기 고밀도폴리에틸렌으로는 LG화학의 LUTENE-H PE0235, LUTENE-H XL1800, LUCENE SP988, LUCENE SP980 등을 사용할 수 있으며, 이들에 제한되는 것은 아니다. 상기 폴리프로필렌은 효성의 R200P, R301 등을 사용할 수 있으며, 이들에 제한되는 것은 아니다.In the first aspect of the present invention, the hybrid sheet 106 of polyethylene resin and polypropylene resin includes 40 to 60 wt% of high density polyethylene and 40 to 60 wt% of polypropylene. The hybrid sheet 106 serves to adhere the polypropylene-based pipe and the polyethylene-based unfoamed sheet well. As the high-density polyethylene, LG Chem's LUTENE-H PE0235, LUTENE-H XL1800, LUCENE SP988, LUCENE SP980 and the like can be used, but are not limited thereto. The polypropylene may be used Hyosung R200P, R301, and the like, but is not limited thereto.

본 발명의 제 3 양태에서 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106')는 합지용 접착성수지층(108)의 주성분인 선형 저밀도 폴리에틸렌계의 접착성수지 40 ~ 60 중량%와 상기 외면접착성수지층(110)의 주성분인 폴리프로필렌계 접착성수지 40 ~ 60 중량%의 혼합물로 이루어질 수 있다.In the third aspect of the present invention, the hybrid sheet 106 'of the polyethylene resin and the polypropylene resin is 40 to 60 wt% of the linear low density polyethylene adhesive resin, which is the main component of the adhesive resin layer 108 for lamination, and the outer adhesive water. It may be made of a mixture of 40 to 60% by weight of a polypropylene-based adhesive resin of the main layer 110.

구체적으로 예를 들어 선형 저밀도 폴리에틸렌계의 접착성수지는 호남석유화학의 상품명 EM-400과 같은 선형 저밀도폴리에틸렌(LLDPE)계열의 접착성수지를 사용할 수 있다. 이밖에도 호남석유화학의 상품명 BM-310, EM-510H, EM-510M, EM-520M, EM-530, G-PE, TU-100, TU-100D 등을 사용할 수 있으며, 이들에 제한되는 것은 아니다. 또한, 폴리프로필렌계 접착성수지는 호남석유화학의 상품명 BP-401의 폴리프로필렌계 접착성수지가 사용되고, 이밖에도 상품명 BP-104P, BP-402, BS-300 등을 사용할 수 있으며, 이들에 제한되는 것은 아니다.Specifically, for example, the linear low density polyethylene adhesive resin may be a linear low density polyethylene (LLDPE) adhesive resin such as Honam Petrochemical's trade name EM-400. In addition, the brand names of Honam Petrochemical BM-310, EM-510H, EM-510M, EM-520M, EM-530, G-PE, TU-100, TU-100D and the like can be used, but are not limited thereto. In addition, the polypropylene adhesive resin is a polypropylene adhesive resin of Honam Petrochemical brand name BP-401, in addition to the brand name BP-104P, BP-402, BS-300, etc. may be used, but is not limited thereto. .

합지용 접착성수지층(108)Adhesive resin layer for paper (108)

상기 언급된 바와 같이, 본 발명의 제1 실시형태에서, 전기발포융착시트(10)의 3가지 구성요소, 즉, 폴리에틸렌 미발포시트(102), 전열선네트(104) 및 혼성시트(106)는 이들의 합지를 위하여 합지용 접착성수지가 사용된다. 도 4 및 도 5에서는 이러한 합지용 접착성수지가 하나의 층으로 도시하여 본 발명의 이해를 돕도록 하였다. 따라서, 도 4 및 도 5에서는 이를 합지용 접착성수지층(108)으로 도시하였다. 그러나, 본 발명의 기술분야에 전문가라면 전기발포융착시트(10)의 3가지 구성요소, 즉, 폴리에틸렌 미발포시트(102), 전열선네트(104) 및 혼성시트(106)가 공급롤의 형태로부터 한쌍의 시트성형롤 사이로 공급되고 이들 구성요소의 공급중에 액상의 합지용 접착성수지가 도포되어 전열선네트(104)의 통공형 망목을 통하여 폴리에틸렌 미발포시트(102)와 혼성시트(106) 사이의 대향 면에 접착됨으로서 합지가 이루어질 수 있는 것이다.As mentioned above, in the first embodiment of the present invention, the three components of the electrofoamed sheet 10, that is, the polyethylene unfoamed sheet 102, the heating wire 104 and the hybrid sheet 106 are Adhesive paper for lamination is used for these laminations. In FIG. 4 and FIG. 5, such an adhesive resin for lamination is shown as one layer to help the understanding of the present invention. Therefore, FIGS. 4 and 5 illustrate the adhesive resin layer 108 for lamination. However, those skilled in the art will appreciate that the three components of the electrofoamed sheet 10, i.e., the polyethylene unfoamed sheet 102, the heating wire 104 and the hybrid sheet 106, are from the form of a feed roll. It is supplied between a pair of sheet-forming rolls and a liquid laminating adhesive resin is applied during the supply of these components to face the gap between the polyethylene unfoamed sheet 102 and the hybrid sheet 106 through the through-hole mesh of the heating wire net 104. Bonding to the surface can be made of paper.

합지용 접착성수지층(108)은 상기 언급된 바와 같이 폴리에틸렌 미발포시트(102), 전열선네트(104) 및 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106)는 이들의 합지를 위하여 사용되는 것으로, 폴리에틸렌 미발포시트(102)의 주요구성성분인 폴리에틸렌과의 우수한 접착성을 보이는 한편 혼성시트(106)의 주요성분중 하나인 폴리에틸렌과의 우수한 접착성을 보일 수 있도록 하기 위하여, 합지용 접착성수지층(108)은 변성 폴리에틸렌 접착성수지를 사용하는 것이 바람직하다. 예를 들어 변성 폴리에틸렌 접착성수지로서는 선형 저밀도 폴리에틸렌계의 접착성수지를 사용할 수 있으며, 구체적으로 예를 들어 호남석유화학의 상품명 EM-400과 같은 선형 저밀도폴리에틸렌(LLDPE)계열의 접착성수지를 사용할 수 있다. 이밖에도 호남석유화학의 상품명 BM-310, EM-510H, EM-510M, EM-520M, EM-530, G-PE, TU-100, TU-100D 등을 사용할 수 있으며, 이들에 제한되는 것은 아니다. As mentioned above, the adhesive resin layer 108 for lamination is a polyethylene unfoamed sheet 102, an electric heating net 104, and a hybrid sheet 106 of polyethylene resin and polypropylene resin is used for their lamination. In order to show excellent adhesion to polyethylene, which is a major component of the polyethylene non-foamed sheet 102, and to show good adhesion to polyethylene, which is one of the main components of the hybrid sheet 106, an adhesive resin layer for lamination It is preferable to use the modified polyethylene adhesive resin (108). For example, as a modified polyethylene adhesive resin, a linear low density polyethylene adhesive resin can be used. Specifically, for example, a linear low density polyethylene (LLDPE) adhesive resin such as Honam Petrochemical's trade name EM-400 can be used. . In addition, the brand names of Honam Petrochemical BM-310, EM-510H, EM-510M, EM-520M, EM-530, G-PE, TU-100, TU-100D and the like can be used, but are not limited thereto.

상기 합지용 접착성수지층(108)은 변성 폴리에틸렌 접착성수지 이외에, 스티렌계블록공중합체수지로써, 스티렌부타디엔스티렌수지, 스티렌이소프렌스티렌수지, 스티렌부타디엔부틸렌스티렌수지, 스티렌에틸렌부틸렌스티렌수지, 스티렌에틸렌프로필렌스티렌수지 및 이들의 산무수물 그라프트 변성수지에서 선택되는 어느 하나 또는 둘 이상의 블렌드물을 0.1 ~ 10 중량% 더 포함할 수 있으며, 이들이 포함되는 경우 접착강도가 더욱 향상된다. 0.1 중량% 미만으로 포함하는 경우는 효과가 미미하며, 10 중량%를 초과하여 사용하는 경우는 너무 딱딱해질 수 있으며, 압출 가공성이 급격히 저하된다.The laminated adhesive resin layer 108 is a styrene-based block copolymer resin, in addition to the modified polyethylene adhesive resin, styrene butadiene styrene resin, styrene isoprene styrene resin, styrene butadiene butylene styrene resin, styrene ethylene butylene styrene resin, styrene One or two or more blends selected from ethylene propylene styrene resins and acid anhydride graft modified resins thereof may further include 0.1 wt% to 10 wt%, and when included, adhesion strength is further improved. When included in less than 0.1% by weight, the effect is insignificant, when used in excess of 10% by weight may be too hard, extrusion workability is sharply lowered.

또한, 접착성뿐만 아니라 기계적 강도를 향상시키기 위하여 에틸렌과 메타크릴산의 공중합체, 에틸렌과 아크릴산의 공중합체에서 선택되는 이오노머를 0.1 ~ 10 중량% 더 포함할 수 있다. 0.1 중량% 미만으로 사용하는 경우는 효과가 미미하며, 10 중량%를 초과하여 사용하는 경우는 가격이 상승된다. 상기 이오노머가 포함되는 경우는 폴리에틸렌수지와 폴리프로필렌수지간의 접착뿐만 아니라, 전열선패널과의 접착이 매우 향상되므로 발포시 또는 발포 이후에도 분리되는 현상이 전혀 발생하지 않는다.In addition, in order to improve the mechanical strength as well as adhesion, an ionomer selected from a copolymer of ethylene and methacrylic acid and a copolymer of ethylene and acrylic acid may further include 0.1 to 10 wt%. In case of using less than 0.1% by weight, the effect is insignificant, and in the case of using in excess of 10% by weight, the price is increased. When the ionomer is included, not only the adhesion between the polyethylene resin and the polypropylene resin, but also the adhesion with the heating panel is very improved, so that no phenomenon of separation occurs during or after foaming.

외면접착성수지층(110)Exterior adhesive resin layer (110)

상기 외면접착성수지층(110)은 폴리프로필렌계 파이프(16)와 본 발명의 전기발포융착시트(10)의 접착성을 향상시키는 역할을 한다. 즉, 폴리프로필렌계 파이프(16)에 닿는 부분이다. 구체적으로는 변성 폴리프로필렌 접착수지로, 예를 들면, 호남석유화학의 상품명 BP-401의 폴리프로필렌계 접착성수지가 사용되고, 이밖에도 상품명 BP-104P, BP-402, BS-300 등을 사용할 수 있으며, 이들에 제한되는 것은 아니다.The outer adhesive resin layer 110 serves to improve the adhesion between the polypropylene pipe 16 and the electro-foamed fusion sheet 10 of the present invention. That is, the part which contacts the polypropylene pipe 16 is. Specifically, as the modified polypropylene adhesive resin, for example, a polypropylene adhesive resin of Honam Petrochemical's trade name BP-401 may be used. In addition, trade names BP-104P, BP-402 and BS-300 may be used. It is not limited to these.

상기 외면접착성수지층(110)은 변성 폴리프로필렌 접착수지 이외에, 스티렌계블록공중합체수지로써, 스티렌부타디엔스티렌수지, 스티렌이소프렌스티렌수지, 스티렌부타디엔부틸렌스티렌수지, 스티렌에틸렌부틸렌스티렌수지, 스티렌에틸렌프로필렌스티렌수지 및 이들의 산무수물 그라프트 변성수지에서 선택되는 어느 하나 또는 둘 이상의 블렌드물을 0.1 ~ 10 중량% 더 포함할 수 있으며, 이들이 포함되는 경우 접착강도가 더욱 향상된다. 0.1 중량% 미만으로 포함하는 경우는 효과가 미미하며, 10 중량%를 초과하여 사용하는 경우는 너무 딱딱해질 수 있으며, 압출 가공성이 급격히 저하된다.The outer adhesive resin layer 110 is a styrene-based block copolymer resin, in addition to the modified polypropylene adhesive resin, styrene butadiene styrene resin, styrene isoprene styrene resin, styrene butadiene butylene styrene resin, styrene ethylene butylene styrene resin, styrene ethylene Any one or two or more blends selected from propylene styrene resins and acid anhydride graft modified resins thereof may further include 0.1 to 10 wt%, and the adhesion strength is further improved when they are included. When included in less than 0.1% by weight, the effect is insignificant, when used in excess of 10% by weight may be too hard, extrusion workability is sharply lowered.

또한, 접착성뿐만 아니라 기계적 강도를 향상시키기 위하여 에틸렌과 메타크릴산의 공중합체, 에틸렌과 아크릴산의 공중합체에서 선택되는 이오노머를 0.1 ~ 10 중량% 더 포함할 수 있다. 0.1 중량% 미만으로 사용하는 경우는 효과가 미미하며, 10 중량%를 초과하여 사용하는 경우는 가격이 상승된다.
In addition, in order to improve the mechanical strength as well as adhesion, an ionomer selected from a copolymer of ethylene and methacrylic acid and a copolymer of ethylene and acrylic acid may further include 0.1 to 10 wt%. In case of using less than 0.1% by weight, the effect is insignificant, and in the case of using in excess of 10% by weight, the price is increased.

이하는 본 발명의 실시형태를 보다 구체적으로 설명하기 위하여 일 예를 들어 설명하는 것이며, 본 발명이 하기 실시예에 한정되는 것은 아니다.Hereinafter, the present invention will be described by way of example in order to describe the embodiments of the present invention more specifically, but the present invention is not limited to the following examples.

이하 물성은 하기 측정방법에 의해 측정하였다. Hereinafter, physical properties were measured by the following measuring method.

용융지수(Melt Index)는 ASTM D 1238에 의해 측정하였다.Melt Index was measured by ASTM D 1238.

접착성 및 수밀성은 다음과 같은 방법으로 평가하였다. 폴리프로필렌계 파이프에 실시예 및 비교예에서 제조된 전기발포융착시트와 조임밴드의 조합을 감싸고 체결하여 고정한 다음, 전열선에 전기를 인가하고 온도가 180℃가 될 때까지 가열하여 전기발포융착시트를 발포하였다. 수밀실험은 KPS M 2009방법에 따라 가압한 후, 누수확인(D1000)을 하였다. 융착 확인은 융착된 관의 단면을 관찰하여 전기발포융착시트의 중첩부분에 공간부가 형성되지 않고 완전히 융착되었는지를 관찰하였다. Adhesiveness and water tightness were evaluated by the following method. Wrap and fasten the combination of the electro-foamed fusion sheet and the tightening band prepared in Examples and Comparative Examples in a polypropylene pipe, and then apply electricity to the heating wire and heat it until the temperature reaches 180 ° C Foamed. The watertight test was conducted after pressurization according to the KPS M 2009 method, and leakage was confirmed (D1000). The fusion confirmation was performed by observing the cross section of the fused tube to observe whether the space part was completely formed without overlapping the overlapping portion of the electro-foamed fusion sheet.

[실시예 1]Example 1

1) 발포제 마스터배치의 제조1) Preparation of Foam Masterbatch

용융지수가 3g/10분(190℃, 2.16kg)이고 밀도가 0.924g/㎤인 저밀도폴리에틸렌 35 중량%, 용융지수가 25g/10분(190℃, 2.16kg)이고 밀도가 0.946g/㎤인 고밀도폴리에틸렌 10 중량%, 용융지수가 2.5g/10분(190℃, 2.16kg)이고 밀도가 0.920g/㎤인 무수말레인산 그라프트 선형저밀도폴리에틸렌 20 중량%, 용융지수가 1g/10분(190℃, 2.16kg)이고 밀도가 0.870g/㎤인 메탈로센 폴리에틸렌계 엘라스토머 30 중량%, 발포제(아조디카본아마이드, 동진세미켐) 4 중량% 및 윤활제(칼슘 스테아레이트) 1 중량%를 니더에 투입한 후, 130℃에서 15분간 혼련을 수행하였다. 이후 160℃의 압출기에서 용융압출하여 발포제 마스터배치 펠렛을 제조하였다.35 wt% low density polyethylene with a melt index of 3g / 10 min (190 ° C., 2.16 kg) and a density of 0.924 g / cm 3, a melt index of 25 g / 10 min (190 ° C., 2.16 kg) and a density of 0.946 g / cm 3 10 wt% of high density polyethylene, melt index of 2.5g / 10min (190 ℃, 2.16kg), maleic anhydride graft linear low density polyethylene 20wt% of density 0.920g / cm3, melt index of 1g / 10min (190 ℃) , 2.16 kg), 30 wt% of a metallocene polyethylene elastomer having a density of 0.870 g / cm3, 4 wt% of a blowing agent (azodicarbonamide, Dongjin Semichem), and 1 wt% of a lubricant (calcium stearate) were added to the kneader. Then, kneading was performed at 130 ° C. for 15 minutes. After melt extrusion in an extruder at 160 ℃ to prepare a foaming agent masterbatch pellets.

2) 폴리에틸렌 미발포시트(102)의 제조2) Preparation of Polyethylene Unfoamed Sheet 102

베이스수지로 용융지수가 3g/10분(190℃, 2.16kg)이고 밀도가 0.924g/㎤인 저밀도폴리에틸렌 40 중량%, 용융지수가 25g/10분(190℃, 2.16kg)이고 밀도가 0.946g/㎤인 고밀도폴리에틸렌 10 중량%, 용융지수가 2.5g/10분(190℃, 2.16kg)이고 밀도가 0.920g/㎤인 무수말레인산 그라프트 선형저밀도폴리에틸렌 20 중량%, 용융지수가 1g/10분(190℃, 2.16kg)이고 밀도가 0.870g/㎤인 메탈로센 폴리에틸렌계 엘라스토머 30 중량%를 압출기에 넣고, 상기 베이스수지 100 중량부에 대하여 위에서 제조된 발포제 마스터배치 펠렛 5 중량부를 투입한 후, 160℃에서 용융 압출하여 티다이를 통해서 시트상으로 제조하였다.40% by weight low-density polyethylene with a melt index of 3g / 10min (190 ℃, 2.16kg) and a density of 0.924g / cm3, a melt index of 25g / 10min (190 ℃, 2.16kg) and a density of 0.946g 10% by weight of high density polyethylene having a / cm3, 20% by weight of maleic anhydride graft linear low density polyethylene having a melt index of 2.5g / 10min (190 DEG C, 2.16kg) and a density of 0.920g / cm3, and a melt index of 1g / 10min. 30 wt% of a metallocene polyethylene elastomer having a density of 0.870 g / cm 3 and a density of 0.870 g / cm 3 was added to the extruder, and 5 parts by weight of the foaming agent masterbatch pellet prepared above was added to 100 parts by weight of the base resin. , Melt-extruded at 160 ℃ to prepare a sheet through a die die.

전열선(18a, 18b)이 배치된 전열선네트(104)를 폴리에틸렌 미발포시트(102)의 제조시에 이에 롤러를 이용하여 가압하여 압착한다.The heating wire net 104 on which the heating wires 18a and 18b are disposed is pressed by using a roller in the production of the polyethylene non-foamed sheet 102 and pressed.

3) 혼성시트(106)의 제조3) Preparation of Hybrid Sheet 106

압출기에 고밀도폴리에틸렌(LG화학의 LUTENE-H PE0235) 40 중량%, 폴리프로필렌(효성의 R200P) 60 중량%를 넣고 용융압출하여 폴리에틸렌과 폴리프로필렌의 혼성시트(106)를 제조하였다.40 wt% of high density polyethylene (LUTENE-H PE0235 from LG Chem) and 60 wt% of polypropylene (Hyosung's R200P) were added to an extruder to melt extrude to prepare a hybrid sheet 106 of polyethylene and polypropylene.

4) 폴리에틸렌 미발포시트(102)와 혼성시트(106)의 적층4) Lamination of Polyethylene Unfoamed Sheet 102 and Hybrid Sheet 106

상기 폴리에틸렌 미발포시트(102), 상기 전열선네트(104) 및 상기 혼성시트(106)가 공급롤의 형태로부터 한쌍의 시트성형롤 사이로 공급되고 이들 구성요소의 공급중에 선형 저밀도 폴리에틸렌(LLDPE)계열의 접착성수지(호남석유화학의 EM-400)가 액상의 형태로 상기 혼성시트(106)의 내면측에 합지용 접착성수지층(108)을 이루도록 도포되어 전열선네트(104)의 통공형 망목을 통하여 폴리에틸렌 미발포시트(102)의 내면측에 대하여 상기 전열선네트(104)와 함께 혼성시트(106)의 대향 면에 접착됨으로서 합지가 이루어지도록 하여 본 발명의 전기발포융착시트(10)를 제조하였다.The polyethylene unfoamed sheet 102, the heat transfer net 104 and the hybrid sheet 106 are fed between a pair of sheet forming rolls in the form of a feed roll, and are supplied with linear low density polyethylene (LLDPE) series during the supply of these components. Adhesive resin (EM-400 of Honam Petrochemical) is applied to form the adhesive resin layer 108 for lamination on the inner surface side of the hybrid sheet 106 in the form of a liquid through the through-hole mesh of the heating wire net 104 The polyfoamed sheet 10 of the present invention was prepared by bonding the inner surface side of the polyethylene non-foamed sheet 102 to the opposite surface of the hybrid sheet 106 together with the heating net 104.

상기 물성 측정방법에 의해 물성을 측정한 결과 고르게 발포되어 완전히 발포 융착된 것을 확인하였으며, 수밀실험에서도 누수가 발생하지 않았다. 또한 접착강도도 매우 우수한 것을 알 수 있었다.As a result of measuring the physical properties by the measuring method, it was confirmed that the foam was uniformly foamed and completely fused, and no water leakage occurred in the watertight experiment. It was also found that the adhesive strength was very good.

[실시예 2][Example 2]

상기 실시예 1에서, 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106)의 제조 시, 고밀도폴리에틸렌(LG화학의 LUTENE-H PE0235) 50 중량%, 폴리프로필렌(효성의 R200P) 50 중량%를 사용한 것을 제외하고는 동일한 방법으로 전기발포융착시트(10)를 제조하였다.In Example 1, 50 wt% of high density polyethylene (LUTENE-H PE0235 of LG Chem) and 50 wt% of polypropylene (Hyosung R200P) were used to prepare the hybrid sheet 106 of polyethylene resin and polypropylene resin. Except for manufacturing the electro-foamed fusion sheet 10 in the same manner.

상기 물성 측정방법에 의해 물성을 측정한 결과 고르게 발포되어 완전히 발포 융착된 것을 확인하였으며, 수밀실험에서도 누수가 발생하지 않았다. 또한 접착강도 역시 매우 우수한 것을 알 수 있었다.As a result of measuring the physical properties by the measuring method, it was confirmed that the foam was uniformly foamed and completely fused, and no water leakage occurred in the watertight experiment. In addition, the adhesive strength was also found to be very good.

[실시예 3][Example 3]

상기 실시예 1에서, 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106) 제조 시, 고밀도폴리에틸렌(LG화학의 LUTENE-H PE0235) 60 중량%, 폴리프로필렌(효성의 R200P) 40 중량%를 사용한 것을 제외하고는 동일한 방법으로 전기발포융착시트(10)를 제조하였다.In Example 1, 60 wt% of high density polyethylene (LUTENE-H PE0235 of LG Chem) and 40 wt% of polypropylene (Hyosung R200P) were used to prepare the hybrid sheet 106 of polyethylene resin and polypropylene resin. And to prepare an electro-foam welding sheet 10 in the same manner.

상기 물성 측정방법에 의해 물성을 측정한 결과 고르게 발포되어 완전히 발포 융착된 것을 확인하였으며, 수밀실험에서도 누수가 발생하지 않았다. 또한 접착강도 역시 매우 우수한 것을 알 수 있었다.As a result of measuring the physical properties by the measuring method, it was confirmed that the foam was uniformly foamed and completely fused, and no water leakage occurred in the watertight experiment. In addition, the adhesive strength was also found to be very good.

[실시예 4]Example 4

상기 실시예 1에서, 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106) 제조 시, 선형 저밀도 폴리에틸렌(LLDPE)계열의 접착성수지(호남석유화학의 EM-400) 60 중량%, 폴리프로필렌계열의 접착성수지(호남석유화학의 BP-401) 40 중량%를 사용한 것을 제외하고는 동일한 방법으로 전기발포융착시트(10)를 제조하였다.In Example 1, when manufacturing the hybrid sheet 106 of polyethylene resin and polypropylene resin, 60% by weight of linear low density polyethylene (LLDPE) adhesive resin (EM-400 of Honam Petrochemical), polypropylene adhesive Except for using 40% by weight of the resin (Honnam Petrochemical BP-401) was prepared electro-foamed fusion sheet 10 in the same manner.

상기 물성 측정방법에 의해 물성을 측정한 결과 고르게 발포되어 완전히 발포 융착된 것을 확인하였으며, 수밀실험에서도 누수가 발생하지 않았다. 또한 접착강도 역시 매우 우수한 것을 알 수 있었다.As a result of measuring the physical properties by the measuring method, it was confirmed that the foam was uniformly foamed and completely fused, and no water leakage occurred in the watertight experiment. In addition, the adhesive strength was also found to be very good.

이와 같은 본 발명 제3 실시형태의 혼성시트(106')는 선형 저밀도 폴리에틸렌계열 접착성수지의 성분에 의하여 발포융착의 주체가 되는 폴리에틸렌 미발포시트(102)와의 상호작용으로 강력한 접착력을 보이고 폴리프로필렌계열의 접착성수지의 성분에 의하여 연결될 폴리프로필렌계 파이프(16)의 외면에 대하여 용융결합에 의한 강력한 접착력을 보이는 것으로 확인되었다.The hybrid sheet 106 ′ according to the third embodiment of the present invention exhibits strong adhesion by interacting with the polyethylene non-foamed sheet 102, which is the main agent of foam fusion, by the components of the linear low density polyethylene series adhesive resin. It was confirmed that strong adhesion by melt bonding to the outer surface of the polypropylene-based pipe 16 to be connected by the components of the series of adhesive resins.

[실시예 5][Example 5]

상기 실시예 1에서, 폴리에틸렌수지와 폴리프로필렌수지의 혼성시트(106) 제조 시, 선형 저밀도 폴리에틸렌(LLDPE)계열의 접착성수지(호남석유화학의 EM-400) 50 중량%, 폴리프로필렌계열의 접착성수지(호남석유화학의 BP-401) 50 중량%를 사용한 것을 제외하고는 동일한 방법으로 전기발포융착시트(10)를 제조하였다.In Example 1, when manufacturing the hybrid sheet 106 of polyethylene resin and polypropylene resin, 50% by weight of linear low density polyethylene (LLDPE) adhesive resin (EM-400 of Honam Petrochemical), polypropylene adhesive Except that 50% by weight of the resin (Honnam Petrochemical BP-401) was used to prepare an electro-foamed fusion sheet 10 in the same manner.

상기 물성 측정방법에 의해 물성을 측정한 결과 고르게 발포되어 완전히 발포 융착된 것을 확인하였으며, 수밀실험에서도 누수가 발생하지 않았다. 또한 접착강도 역시 매우 우수한 것을 알 수 있었다.As a result of measuring the physical properties by the measuring method, it was confirmed that the foam was uniformly foamed and completely fused, and no water leakage occurred in the watertight experiment. In addition, the adhesive strength was also found to be very good.

이와 같은 본 발명 제3 실시형태의 혼성시트(106')는 선형 저밀도 폴리에틸렌계열 접착성수지의 성분에 의하여 발포융착의 주체가 되는 폴리에틸렌 미발포시트(102)와의 상호작용으로 강력한 접착력을 보이고 폴리프로필렌계열의 접착성수지의 성분에 의하여 연결될 폴리프로필렌계 파이프(16)의 외면에 대하여 용융결합에 의한 강력한 접착력을 보이는 것으로 확인되었다.The hybrid sheet 106 ′ according to the third embodiment of the present invention exhibits strong adhesion by interacting with the polyethylene non-foamed sheet 102, which is the main agent of foam fusion, by the components of the linear low density polyethylene series adhesive resin. It was confirmed that strong adhesion by melt bonding to the outer surface of the polypropylene-based pipe 16 to be connected by the components of the series of adhesive resins.

[실시예 6][Example 6]

상기 실시예 1에서, 상기 합지용 접착성수지층(108)의 형성 시 변성SEBS( Styrene=20 중량%, MI= 2 (230℃, 2.16kg), MA=2 중량%)를 0.5 중량% 더 포함한 것을 제외하고는 동일한 방법으로 전기발포융착시트(10)를 제조하였다.In Example 1, the modified SEBS (Styrene = 20% by weight, MI = 2 (230 ℃, 2.16kg), MA = 2% by weight) further comprises 0.5% by weight when forming the adhesive resin layer 108 for the paper Except that was prepared electro-foamed fusion sheet 10 in the same manner.

상기 물성 측정방법에 의해 물성을 측정한 결과 고르게 발포되어 완전히 발포 융착된 것을 확인하였으며, 수밀실험에서도 누수가 발생하지 않았다. 또한 접착강도 역시 매우 우수한 것을 알 수 있었다.As a result of measuring the physical properties by the measuring method, it was confirmed that the foam was uniformly foamed and completely fused, and no water leakage occurred in the watertight experiment. In addition, the adhesive strength was also found to be very good.

[실시예 7][Example 7]

상기 실시예 1에서, 상기 합지용 접착성수지층(108)의 형성 시 이오노머(듀폰사, surlyn 1605)를 0.5 중량% 더 포함한 것을 제외하고는 동일한 방법으로 전기발포융착시트(10)를 제조하였다.In Example 1, the electro-foamed fusion sheet 10 was prepared in the same manner except that the ionomer (Dupont, surlyn 1605) further comprises 0.5% by weight when the adhesive resin layer 108 for lamination is formed.

상기 물성 측정방법에 의해 물성을 측정한 결과 고르게 발포되어 완전히 발포 융착된 것을 확인하였으며, 수밀실험에서도 누수가 발생하지 않았다. 또한 접착강도 역시 매우 우수한 것을 알 수 있었다.As a result of measuring the physical properties by the measuring method, it was confirmed that the foam was uniformly foamed and completely fused, and no water leakage occurred in the watertight experiment. In addition, the adhesive strength was also found to be very good.

[실시예 8][Example 8]

상기 실시예 1에서, 상기 혼성시트(106)의 상부에 폴리프로필렌계열의 접착성수지(호남석유화학의 BP-401)를 용융압출하여 외면접착성수지층(110)을 형성한 것을 제외하고는 실시예 1과 동일한 방법으로 전기발포융착시트(10)를 제조하였다.In Example 1, except that the outer adhesive resin layer 110 was formed by melting and extruding a polypropylene-based adhesive resin (BP-401 of Honam Petrochemical) on the upper portion of the hybrid sheet 106. In the same manner as in Example 1 was prepared an electrofoaming fusion sheet (10).

상기 물성 측정방법에 의해 물성을 측정한 결과 고르게 발포되어 완전히 발포 융착된 것을 확인하였으며, 수밀실험에서도 누수가 발생하지 않았다. 또한 접착강도 역시 매우 우수한 것을 알 수 있었다.
As a result of measuring the physical properties by the measuring method, it was confirmed that the foam was uniformly foamed and completely fused, and no water leakage occurred in the watertight experiment. In addition, the adhesive strength was also found to be very good.

10: 전기발포융착시트, 12;지지시트, 14: 조임밴드, 16: 파이프, 18a, 18b: 전열선, 20: 연결단자, 22: 밴드클램프부, 24: 지지봉, 26: 볼트, 28: 너트, 102: 폴리에틸렌 미발포시트, 104: 전열선네트, 106, 106': 혼성시트, 108: 합지용 접착성수지층, 110: 외면접착성수지층.10: electro-foamed sheet, 12; support sheet, 14: tightening band, 16: pipe, 18a, 18b: heating wire, 20: connecting terminal, 22: band clamp portion, 24: support rod, 26: bolt, 28: nut, 102: unfoamed polyethylene sheet, 104: heating wire net, 106, 106 ': hybrid sheet, 108: adhesive resin layer for lamination, 110: outer adhesive resin layer.

Claims (12)

저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%를 포함하는 베이스수지 100 중량부에 대하여, 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%, 발포제 1 ~ 10 중량% 및 첨가제 0.1 ~ 5 중량%를 포함하는 마스터배치 1 ~ 10 중량부를 포함하는 폴리에틸렌 미발포시트;
전열선이 지그재그로 배열된 전열선패널을 갖는 그물망 형태의 전열선네트;
합지용 접착성수지층에 의하여 상기 폴리에틸렌 미발포시트와 접착되는 고밀도폴리에틸렌 40 ~ 60 중량%, 폴리프로필렌 40 ~ 60 중량%를 포함하는 혼성시트;
를 포함하는 전기발포융착시트.100 parts by weight of the base resin including 30 to 50% by weight of low density polyethylene, 5 to 20% by weight of high density polyethylene, 10 to 30% by weight of metallocene polyethylene elastomer, and 20 to 40% by weight of maleic anhydride graft copolymer, Low density polyethylene 30-50% by weight, high density polyethylene 5-20% by weight, metallocene polyethylene elastomer 10-30% by weight, maleic anhydride graft copolymer 20-40% by weight, blowing agent 1-10% by weight and additives 0.1- Polyethylene unfoamed sheet containing 1 to 10 parts by weight of the masterbatch including 5% by weight;
Heating wire net having a heating wire panel in which heating wires are arranged in zigzag;
A hybrid sheet including 40 to 60% by weight of high density polyethylene and 40 to 60% by weight of polypropylene bonded to the polyethylene non-foamed sheet by a laminating adhesive resin layer;
Electro-foaming fusion sheet comprising a. 제1항에 있어서, 상기 합지용 접착성수지층은 변성 폴리에틸렌 접착수지를 포함하는 전기발포융착시트.The method of claim 1, wherein the adhesive resin layer for lamination is an electro-foamed fusion sheet comprising a modified polyethylene adhesive resin. 제2항에 있어서, 상기 합지용 접착성수지층은 스티렌부타디엔스티렌수지, 스티렌이소프렌스티렌수지, 스티렌부타디엔부틸렌스티렌수지, 스티렌에틸렌부틸렌스티렌수지, 스티렌에틸렌프로필렌스티렌수지 및 이들의 산무수물 그라프트 변성수지에서 선택되는 어느 하나 또는 둘 이상의 블렌드물을 0.1 ~ 10 중량% 더 포함하는 전기발포융착시트.The method of claim 2, wherein the adhesive resin layer for lamination is styrene butadiene styrene resin, styrene isoprene styrene resin, styrene butadiene butylene styrene resin, styrene ethylene butylene styrene resin, styrene ethylene propylene styrene resin and acid anhydride graft modified thereof Electro-foaming fusion sheet further comprises 0.1 to 10% by weight of any one or two or more blends selected from resins. 제2항에 있어서, 상기 합지용 접착성수지층은 에틸렌과 메타크릴산의 공중합체, 에틸렌과 아크릴산의 공중합체에서 선택되는 이오노머를 0.1 ~ 10 중량% 더 포함하는 전기발포융착시트.According to claim 2, wherein the adhesive resin layer for lamination further comprises an ionomer selected from the copolymer of ethylene and methacrylic acid, the copolymer of ethylene and acrylic acid, 0.1 to 10% by weight of the electro-foaming adhesive sheet. 제1항에 있어서, 상기 혼성시트의 외면에 폴리프로필렌계 접착성수지를 포함하는 외면접착수지층을 더 포함하는 전기발포융착시트.The electro-foamed welding sheet according to claim 1, further comprising an outer adhesive resin layer including a polypropylene adhesive resin on an outer surface of the hybrid sheet. 제 1항 내지 제 5항에서 선택되는 어느 한 항에 있어서,
상기 베이스수지는 비닐아세테이트 함량이 5 ~ 30중량%인 비닐아세테이트계수지를 0.1 ~ 10 중량% 더 포함하는 전기발포융착용 시트.6. The compound according to any one of claims 1 to 5,
The base resin is an electro-foaming welding sheet further comprises 0.1 to 10% by weight of vinyl acetate resin having a vinyl acetate content of 5 to 30% by weight. 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%를 포함하는 베이스수지 100 중량부에 대하여, 저밀도폴리에틸렌 30 ~ 50 중량%, 고밀도폴리에틸렌 5 ~ 20 중량%, 메탈로센 폴리에틸렌계 엘라스토머 10 ~ 30 중량%, 말레인산 무수물 그라프트 공중합체 20 ~ 40 중량%, 발포제 1 ~ 10 중량% 및 첨가제 0.1 ~ 5 중량%를 포함하는 마스터배치 1 ~ 10 중량부를 포함하는 폴리에틸렌 미발포시트;
전열선이 지그재그로 배열된 전열선패널을 갖는 그물망 형태의 전열선네트와;
합지용 접착성수지층에 의하여 상기 폴리에틸렌 미발포시트와 접착되는 40 ~ 60 중량%의 선형 저밀도 폴리에틸렌계열의 접착성수지와, 40 ~ 60 중량%의 폴리프로필렌계열의 접착성수지로 혼합되어 구성되는 혼성시트;
를 포함하는 전기발포융착시트.100 parts by weight of the base resin including 30 to 50% by weight of low density polyethylene, 5 to 20% by weight of high density polyethylene, 10 to 30% by weight of metallocene polyethylene elastomer, and 20 to 40% by weight of maleic anhydride graft copolymer, Low density polyethylene 30-50% by weight, high density polyethylene 5-20% by weight, metallocene polyethylene elastomer 10-30% by weight, maleic anhydride graft copolymer 20-40% by weight, blowing agent 1-10% by weight and additives 0.1- Polyethylene unfoamed sheet containing 1 to 10 parts by weight of the masterbatch including 5% by weight;
Heating wire nets having a heating wire panel in which heating wires are arranged in zigzag;
A hybrid sheet composed of 40 to 60% by weight of a linear low density polyethylene series adhesive resin bonded to the polyethylene non-foamed sheet by a laminated adhesive resin layer and 40 to 60% by weight of an adhesive resin of polypropylene series. ;
Electro-foaming fusion sheet comprising a. 제7항에 있어서, 상기 합지용 접착성수지층은 선형 저밀도 폴리에틸렌수지 또는 변성 폴리에틸렌 접착수지를 포함하는 전기발포융착시트.The method of claim 7, wherein the adhesive resin layer for lamination is an electro-foamed welding sheet comprising a linear low density polyethylene resin or a modified polyethylene adhesive resin. 제8항에 있어서, 상기 합지용 접착성수지층은 스티렌부타디엔스티렌수지, 스티렌이소프렌스티렌수지, 스티렌부타디엔부틸렌스티렌수지, 스티렌에틸렌부틸렌스티렌수지, 스티렌에틸렌프로필렌스티렌수지 및 이들의 산무수물 그라프트 변성수지에서 선택되는 어느 하나 또는 둘 이상의 블렌드물을 0.1 ~ 10 중량% 더 포함하는 전기발포융착시트.The method of claim 8, wherein the adhesive resin layer for lamination is styrene butadiene styrene resin, styrene isoprene styrene resin, styrene butadiene butylene styrene resin, styrene ethylene butylene styrene resin, styrene ethylene propylene styrene resin and acid anhydride graft modified thereof Electro-foaming fusion sheet further comprises 0.1 to 10% by weight of any one or two or more blends selected from resins. 제8항에 있어서, 상기 합지용 접착성수지층은 에틸렌과 메타크릴산의 공중합체, 에틸렌과 아크릴산의 공중합체에서 선택되는 이오노머를 0.1 ~ 10 중량% 더 포함하는 전기발포융착시트.The method of claim 8, wherein the adhesive resin layer for lamination further comprises an ionomer selected from the copolymer of ethylene and methacrylic acid, the copolymer of ethylene and acrylic acid, 0.1 to 10% by weight of the electro-foaming adhesive sheet. 제7항에 있어서, 상기 혼성시트의 외면에 폴리프로필렌계 접착성수지를 포함하는 외면접착수지층을 더 포함하는 전기발포융착시트.The electro-foamed welding sheet according to claim 7, further comprising an outer adhesive resin layer including a polypropylene adhesive resin on an outer surface of the hybrid sheet. 제 7항 내지 제 11항에서 선택되는 어느 한 항에 있어서,
상기 베이스수지는 비닐아세테이트 함량이 5 ~ 30중량%인 비닐아세테이트계수지를 0.1 ~ 10 중량% 더 포함하는 전기발포융착용 시트.The method according to any one of claims 7 to 11,
The base resin is an electro-foaming welding sheet further comprises 0.1 to 10% by weight of vinyl acetate resin having a vinyl acetate content of 5 to 30% by weight.
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LU100865B1 (en) * 2018-07-03 2020-01-07 Aliaxis R&D Sas Coupling element, coupling assembly with such a coupling element and method of coupling a first substrate to such a coupling element

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KR101015273B1 (en) 2010-01-07 2011-02-18 주수영 Sheet composition for pipe connecting, sheet using thereof and device for connecting underground pipes
KR101046181B1 (en) 2010-09-10 2011-07-05 유상종 Pipe coupler
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KR101046181B1 (en) 2010-09-10 2011-07-05 유상종 Pipe coupler
KR101214144B1 (en) 2011-08-26 2012-12-20 (주)파텍 Method of connecting sewer pipes using electro-fusion connector

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CN103453272A (en) * 2013-09-12 2013-12-18 扬中市金元化工电力设备厂 Heating device for pipeline

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