RO87449B1 - Process and device for making polyvinyl chloride heat-shrinking tubes - Google Patents

Process and device for making polyvinyl chloride heat-shrinking tubes

Info

Publication number
RO87449B1
RO87449B1 RO107098A RO10709882A RO87449B1 RO 87449 B1 RO87449 B1 RO 87449B1 RO 107098 A RO107098 A RO 107098A RO 10709882 A RO10709882 A RO 10709882A RO 87449 B1 RO87449 B1 RO 87449B1
Authority
RO
Romania
Prior art keywords
polyvinyl chloride
vacuum
tube
tubes
stretching
Prior art date
Application number
RO107098A
Other languages
Romanian (ro)
Other versions
RO87449A2 (en
Inventor
Andrei Ignat
Radu Bivoleanu
Ticu Baciu
Original Assignee
îNTREPRINDEREA DE PRELUCRARE MASE PLASTICE "MOLDOPLAST"
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 îNTREPRINDEREA DE PRELUCRARE MASE PLASTICE "MOLDOPLAST" filed Critical îNTREPRINDEREA DE PRELUCRARE MASE PLASTICE "MOLDOPLAST"
Priority to RO107098A priority Critical patent/RO87449B1/en
Publication of RO87449A2 publication Critical patent/RO87449A2/en
Publication of RO87449B1 publication Critical patent/RO87449B1/en

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Landscapes

  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

Inventia se refera la un procedeu si un dispozitiv de realizarea tuburilor termocontractabile din policlorura de vinil rigide cu diametre de 5-100 mm si grosimi de 0,05-0,08 mm si coeficient de contractie radial de minim 40%. Se utilizeaza procedeul de extindere a unui tub si etirarea acestuia cu ajutorul vacuumului de 0,1-0,6 at, într-un dispozitiv de calibrare-etirare alcatuit la intrare dintr-o piesa conica, din teflon, o camera de vacuumare-calibrare-racire, formata dintr-o camasa exterioara din otel si una interioara din bronz prevazuta cu gauri de cca. 1 mm pentru vacuumare dispuse în trei zone care alterneaza cu doua zone de racire cu apa, a caror lungime este proportionala cu diametrul si grosimea tubului ce se obtine o garnitura detasabila din cauciuc la iesirea din dispozitiv si o piulita de fixare a dispozitivului.The invention relates to a process and a device for making thermocontractable tubes of rigid vinyl polychloride with diameters of 5-100 mm and thicknesses of 0.05-0.08 mm and a radial contraction coefficient of at least 40%. It is used the process of extending a tube and its stretching by means of the vacuum of 0.1-0.6 at, in a calibration-stretching device formed at the entrance of a conical piece, from Teflon, a vacuum-calibration chamber -cooling, consisting of an outer steel shirt and an inner bronze provided with holes of approx. 1 mm for vacuuming disposed in three zones that alternate with two cooling zones with water, the length of which is proportional to the diameter and thickness of the tube which results in a removable rubber gasket at the exit of the device and a nut for fixing the device.

RO107098A 1982-03-31 1982-03-31 Process and device for making polyvinyl chloride heat-shrinking tubes RO87449B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO107098A RO87449B1 (en) 1982-03-31 1982-03-31 Process and device for making polyvinyl chloride heat-shrinking tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO107098A RO87449B1 (en) 1982-03-31 1982-03-31 Process and device for making polyvinyl chloride heat-shrinking tubes

Publications (2)

Publication Number Publication Date
RO87449A2 RO87449A2 (en) 1985-08-31
RO87449B1 true RO87449B1 (en) 1985-08-31

Family

ID=20111327

Family Applications (1)

Application Number Title Priority Date Filing Date
RO107098A RO87449B1 (en) 1982-03-31 1982-03-31 Process and device for making polyvinyl chloride heat-shrinking tubes

Country Status (1)

Country Link
RO (1) RO87449B1 (en)

Also Published As

Publication number Publication date
RO87449A2 (en) 1985-08-31

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