KR830003303A - Insulation tube and its manufacturing method - Google Patents

Insulation tube and its manufacturing method Download PDF

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Publication number
KR830003303A
KR830003303A KR1019800003735A KR800003735A KR830003303A KR 830003303 A KR830003303 A KR 830003303A KR 1019800003735 A KR1019800003735 A KR 1019800003735A KR 800003735 A KR800003735 A KR 800003735A KR 830003303 A KR830003303 A KR 830003303A
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KR
South Korea
Prior art keywords
foam
layer
tube
average
insulation layer
Prior art date
Application number
KR1019800003735A
Other languages
Korean (ko)
Other versions
KR840002205B1 (en
Inventor
아끼오 노지리
도시오 고레에다
마사오 호리꾸찌
Original Assignee
후나하시 마사오
후루가와 뎅끼고오교 가부시끼가이샤
도야마 다이이찌
후루가와 낀조꾸고오교 가부시끼가이샤
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 후나하시 마사오, 후루가와 뎅끼고오교 가부시끼가이샤, 도야마 다이이찌, 후루가와 낀조꾸고오교 가부시끼가이샤 filed Critical 후나하시 마사오
Priority to KR1019800003735A priority Critical patent/KR840002205B1/en
Publication of KR830003303A publication Critical patent/KR830003303A/en
Application granted granted Critical
Publication of KR840002205B1 publication Critical patent/KR840002205B1/en

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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
    • F16L59/00—Thermal insulation in general
    • F16L59/14—Arrangements for the insulation of pipes or pipe systems

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Insulation (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

내용 없음No content

Description

단열관 및 그 제조방법Insulation tube and its manufacturing method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제1도는 본 발명의 단열관의 횡단면도,1 is a cross-sectional view of the heat insulation pipe of the present invention,

제2도는 제1도에 도시한 단열관의 종단면도.2 is a longitudinal sectional view of the heat insulation tube shown in FIG.

Claims (2)

관의 외주에 폴리 프로필렌발포 단열층을 설치한 단열관에 있어서, 그 단열층은 평균 발포배율이 4배 이상의 발포체로 되고, 또 기포형상이 상대적으로 큰 기포현상이 상대적으로 큰 기포형상을 갖는 중앙발포층과, 이 중앙 발포층의 양측에 상대적으로 작은 기포형상을 갖는 내측 발포층과 외측 발포층을 각각 갖는 3층 구조로 되며, 또한 중앙 발포층을 구성하느 기포는 상기 관의 직경 방향의 평균 기포경(μ1) 과 그 관의 길이 방향의 평균 기포경(μ2)의 비 μ1/μ2가 0.3~0.9인 것을 특징으로 하는 단열관.In the heat insulation pipe provided with the polypropylene foam heat insulation layer in the outer periphery of the pipe | tube, the heat insulation layer becomes a foam which is 4 times or more of average foaming ratio, and the center foam layer which has a bubble shape with a relatively large bubble shape has a relatively large bubble shape. And a three-layer structure each having an inner foam layer and an outer foam layer having a relatively small bubble shape on both sides of the central foam layer, and the bubbles constituting the central foam layer have an average bubble diameter in the radial direction of the tube. (μ 1 ) and an average bubble diameter (μ 2 ) in the longitudinal direction of the tube, wherein the ratio μ 1 / μ 2 is 0.3 to 0.9. 폴리 프로필렌에 발포제를 첨가한 혼합물을 압출기에 의해 관의 외주로 압출하여 폴리 프로필렌 발포 단열층을 피복하는 방법에 있어서, 그 발포 단열층의 두께(t)와 평균 발포배율 (M)과 압출기의 다이와 니플간격(d)의 사이에 식 d=K(단, K=0.75~0.20)을 만족하며, 상기 혼합물을 압출하는 것을 특징으로 하는 단열관의 제조방법.A method in which a mixture of polypropylene with a blowing agent is extruded to an outer periphery of a tube by an extruder to cover a polypropylene foam insulation layer, wherein the thickness (t) and average foaming ratio (M) of the foam insulation layer and the die and nipple spacing of the extruder The formula d = K between (d) (However, K = 0.75 ~ 0.20) is satisfied, the method for producing a heat insulating tube, characterized in that for extruding the mixture. ※참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is to be disclosed based on the initial application.
KR1019800003735A 1980-09-25 1980-09-25 Pipe with a foamed cover layer KR840002205B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019800003735A KR840002205B1 (en) 1980-09-25 1980-09-25 Pipe with a foamed cover layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019800003735A KR840002205B1 (en) 1980-09-25 1980-09-25 Pipe with a foamed cover layer

Publications (2)

Publication Number Publication Date
KR830003303A true KR830003303A (en) 1983-06-18
KR840002205B1 KR840002205B1 (en) 1984-11-28

Family

ID=19217803

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019800003735A KR840002205B1 (en) 1980-09-25 1980-09-25 Pipe with a foamed cover layer

Country Status (1)

Country Link
KR (1) KR840002205B1 (en)

Also Published As

Publication number Publication date
KR840002205B1 (en) 1984-11-28

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