SU143226A1 - Method of making thermoplastic pipes - Google Patents

Method of making thermoplastic pipes

Info

Publication number
SU143226A1
SU143226A1 SU697984A SU697984A SU143226A1 SU 143226 A1 SU143226 A1 SU 143226A1 SU 697984 A SU697984 A SU 697984A SU 697984 A SU697984 A SU 697984A SU 143226 A1 SU143226 A1 SU 143226A1
Authority
SU
USSR - Soviet Union
Prior art keywords
pipes
pipe
layer
head
making thermoplastic
Prior art date
Application number
SU697984A
Other languages
Russian (ru)
Inventor
Я.Ю. Золоторевский
Original Assignee
Я.Ю. Золоторевский
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 Я.Ю. Золоторевский filed Critical Я.Ю. Золоторевский
Priority to SU697984A priority Critical patent/SU143226A1/en
Priority to SU697984K priority patent/SU143227A1/en
Application granted granted Critical
Publication of SU143226A1 publication Critical patent/SU143226A1/en

Links

Classifications

    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
    • B29C48/338—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location using a die with concentric parts, e.g. rings, cylinders
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels

Description

Известны способы изготовлени  труб из термопластов посредством экструзии на шнек-машинах. Однако получение с помошью таких способов двухслойных труб невозможно.Methods for the manufacture of pipes from thermoplastics by extrusion on screw machines are known. However, it is impossible to obtain such double-layer pipes with such methods.

По предлагаемому способу двухслойные трубы получают формованием из двух разных расплавов, которыми одновременно заполн ют два концентрических зазора в выпускной головке. По выходе отформованных труб из головки их сваривают в одну двухслойную трубу путем раздува внутренней трубы воздухом или газом с прижатием свариваемых стенок к внутренней футерованной стенке калибруюшей насадки, выполненной в виде жесткой трубы.In the proposed method, double-layer pipes are obtained by molding from two different melts, which simultaneously fill two concentric gaps in the discharge head. At the exit of the molded tubes from the head, they are welded into one double-layer tube by blowing the inner tube with air or gas and pressing the welded walls to the inner lined wall of the gauge nozzle, made in the form of a rigid tube.

На фиг. 1 изображена выпускна  головка, разрез; на фиг. 2 - калибруюша  иасадка, разрез.FIG. 1 shows the discharge head, a slit; in fig. 2 - calibrated and attachment, section.

Способ изготовлени  труб из термопластов состоит в том, что формование производ т из двух разных расплавов на двух шнек-машинах. Через штуцер 1 головки 2 первой машины подают расплав термопласта , который заполн ет кольцевой зазор 3 между дорном 4 и матрицей 5. Отформованна  таким образом труба 6 служит внутренне в двухслойной трубе. Наружную трубу 7 получают, подава  из второй шнек-машины через штуцер 8 в кольцевой зазор 9 между матрицей 5 и корпусом W головки 2, расплав другого термопласта. По выходе труб б и 7 из головки 2 их сваривают путем раздува внутренней трубы 6, иадетой на пробки // и 12, сжатым воздухом или газом, который подают по трубе 13, проход щей внутри дорна 4. При этом свариваемые стенки 14 и 15 труб б и 7 прижимают к фторопластовойA method of making pipes from thermoplastics is that the molding is made from two different melts on two screw machines. Through the fitting 1 of the head 2 of the first machine, a melt of thermoplastic is fed, which fills the annular gap 3 between the mandrel 4 and the matrix 5. The pipe 6 thus molded serves internally in a two-layer pipe. The outer tube 7 is obtained by feeding from the second screw-machine through the fitting 8 into the annular gap 9 between the die 5 and the body W of the head 2, a melt of another thermoplastic. At the exit of the pipes b and 7 from the head 2, they are welded by blowing the inner pipe 6, pressed onto the plugs // and 12, with compressed air or gas, which is supplied through the pipe 13 passing inside the mandrel 4. At the same time, the welded walls of the pipes 14 and 15 b and 7 are pressed to the fluoroplastic

футеровке 16 калибрующей насадки 17. Насадку и готовую двухслойную руб.у. ienpepJ)iBH« охлаждают водой, подаваемой в ванну 18.lining 16 calibrating nozzles 17. The nozzle and the finished two-layer rub.u. ienpepJ) iBH "is cooled by the water supplied to the bath 18.

Полученную , двухслойную трубу из термопласта разрезают на части необходимей длины или наматывают на барабан.The resulting two-layer thermoplastic pipe is cut into pieces of the required length or wound on a drum.

Опись: аемый способ позвол ет получать трубы, внутренний и иазущЩ)Щ,41ЛОи которых .изготовлены из различных материалов, имеющих разное назначение и стоимость, уменьшить общую толщину стенок и сэкономить дефицитные сорта термопластов.Inventory: this method allows to obtain pipes, internal and educational), 41 of which are made of various materials with different purposes and costs, reduce the total wall thickness and save scarce types of thermoplastics.

Предмет изобретени Subject invention

Способ изготовлени  труб из термопластов посредством экструзии на щнек-мащинах, отличающийс  тем, что, с целью получени  двухслойных труб, формование их производ т из двух разных расплавов , которыми заполн ют одновременно два концентрических зазора в выпускной головке, а по выходе отформованных труб из головки их сваривают в одну двухслойную трубу путем раздува внутренней трубы сжатым воздухом или газом с прижатием свариваемых стенок к внутренней футерованной стенке калибрующей насадки, выполненной, в виде жесткой трубы.A method of making pipes from thermoplastic materials by extrusion on the screws-maschin, characterized in that, in order to obtain two-layer pipes, they are formed from two different melts, which are filled simultaneously with two concentric gaps in the outlet head, and upon the exit of the formed pipes from the head they are welded into one double-layer pipe by blowing the inner pipe with compressed air or gas with the walls being welded against the inner lined wall of the calibrating nozzle, made in the form of a rigid pipe.

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SU697984A 1961-02-18 1961-02-18 Method of making thermoplastic pipes SU143226A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SU697984A SU143226A1 (en) 1961-02-18 1961-02-18 Method of making thermoplastic pipes
SU697984K SU143227A1 (en) 1961-02-18 1961-02-18 Discharge head of screw machines for the manufacture of pipes from thermoplastics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU697984A SU143226A1 (en) 1961-02-18 1961-02-18 Method of making thermoplastic pipes

Publications (1)

Publication Number Publication Date
SU143226A1 true SU143226A1 (en) 1961-11-30

Family

ID=39091872

Family Applications (2)

Application Number Title Priority Date Filing Date
SU697984K SU143227A1 (en) 1961-02-18 1961-02-18 Discharge head of screw machines for the manufacture of pipes from thermoplastics
SU697984A SU143226A1 (en) 1961-02-18 1961-02-18 Method of making thermoplastic pipes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
SU697984K SU143227A1 (en) 1961-02-18 1961-02-18 Discharge head of screw machines for the manufacture of pipes from thermoplastics

Country Status (1)

Country Link
SU (2) SU143227A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2571823B1 (en) * 1984-10-17 1989-07-13 Trest Juzhvodoprovod DEVICE FOR PROTECTING THE INTERIOR SURFACE OF A PIPE AGAINST CORROSION
CA2668518C (en) * 2009-06-11 2012-09-25 Manfred A. A. Lupke Die tooling for extruding tubular product

Also Published As

Publication number Publication date
SU143227A1 (en) 1900-01-01

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