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KR920014588A - 3중벽을 가지는 pvc 파이프용 이음관의 제조방법 - Google Patents

3중벽을 가지는 pvc 파이프용 이음관의 제조방법 Download PDF

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Publication number
KR920014588A
KR920014588A KR1019910001277A KR910001277A KR920014588A KR 920014588 A KR920014588 A KR 920014588A KR 1019910001277 A KR1019910001277 A KR 1019910001277A KR 910001277 A KR910001277 A KR 910001277A KR 920014588 A KR920014588 A KR 920014588A
Authority
KR
South Korea
Prior art keywords
pipe
manufacturing
pvc
triple wall
joint pipe
Prior art date
Application number
KR1019910001277A
Other languages
English (en)
Inventor
이남승
Original Assignee
이남승
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 이남승 filed Critical 이남승
Priority to KR1019910001277A priority Critical patent/KR920014588A/ko
Publication of KR920014588A publication Critical patent/KR920014588A/ko

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  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

내용 없음

Description

3중벽을 가지는 PVC 파이프용 이음관의 제조방법
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 본원 발명에 따른 제조 순서도, 제2도는 본 발명상의 일 실시예로써 엘보우의 접속상태 단면도, 제3도는 종래 엘보우의 접속상태 단면도, 제4도는 본 발명상의 일실시예로서의 소켓의 접속 상태 단면도, 제5도는 종래소켓의 접속 상태 단면도.

Claims (1)

  1. 최초의 금형에서 PVC 발포제를 사출하여 발포코아(Core)를 성형하고 이 코아를 2차 금형에 배치하여 그 외곽으로 PVC수지를 사출하여 이음관을 성형함으로써 내벽에 PVC 발포층을 가지도록 한 것을 특징으로하는 3중벽을 가지는 PVC 파이프용 이음관의 제조방법.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019910001277A 1991-01-25 1991-01-25 3중벽을 가지는 pvc 파이프용 이음관의 제조방법 KR920014588A (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019910001277A KR920014588A (ko) 1991-01-25 1991-01-25 3중벽을 가지는 pvc 파이프용 이음관의 제조방법

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019910001277A KR920014588A (ko) 1991-01-25 1991-01-25 3중벽을 가지는 pvc 파이프용 이음관의 제조방법

Publications (1)

Publication Number Publication Date
KR920014588A true KR920014588A (ko) 1992-08-25

Family

ID=67396580

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019910001277A KR920014588A (ko) 1991-01-25 1991-01-25 3중벽을 가지는 pvc 파이프용 이음관의 제조방법

Country Status (1)

Country Link
KR (1) KR920014588A (ko)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100438381B1 (ko) * 2001-06-25 2004-07-02 골든리버 주식회사 소음감소용 이중층을 구비한 파이프 이음관의 제조방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100438381B1 (ko) * 2001-06-25 2004-07-02 골든리버 주식회사 소음감소용 이중층을 구비한 파이프 이음관의 제조방법

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PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19910125

PA0201 Request for examination

Patent event code: PA02012R01D

Patent event date: 19910125

Comment text: Request for Examination of Application

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Patent event date: 19930414

Patent event code: PE09021S01D

E601 Decision to refuse application
PE0601 Decision on rejection of patent

Patent event date: 19930616

Comment text: Decision to Refuse Application

Patent event code: PE06012S01D

Patent event date: 19930414

Comment text: Notification of reason for refusal

Patent event code: PE06011S01I

J2X1 Appeal (before the patent court)

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PJ2001 Appeal

Appeal kind category: Appeal against decision to decline refusal

Decision date: 19941229

Appeal identifier: 1993201001351

Request date: 19930716