SU497156A1 - Worm press for multi-extrusion of polymers - Google Patents

Worm press for multi-extrusion of polymers

Info

Publication number
SU497156A1
SU497156A1 SU2041025A SU2041025A SU497156A1 SU 497156 A1 SU497156 A1 SU 497156A1 SU 2041025 A SU2041025 A SU 2041025A SU 2041025 A SU2041025 A SU 2041025A SU 497156 A1 SU497156 A1 SU 497156A1
Authority
SU
USSR - Soviet Union
Prior art keywords
extrusion
melt
polymers
press
screw
Prior art date
Application number
SU2041025A
Other languages
Russian (ru)
Inventor
Альберт Михайлович Карапатницкий
Юрий Александрович Жданов
Original Assignee
Предприятие П/Я Р-6594
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 Предприятие П/Я Р-6594 filed Critical Предприятие П/Я Р-6594
Priority to SU2041025A priority Critical patent/SU497156A1/en
Application granted granted Critical
Publication of SU497156A1 publication Critical patent/SU497156A1/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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/74—Bypassing means, i.e. part of the molten material being diverted into downstream stages of the extruder
    • B29C48/745—Bypassing means, i.e. part of the molten material being diverted into downstream stages of the extruder for plasticising or homogenising devices
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/375—Plasticisers, homogenisers or feeders comprising two or more stages
    • B29C48/38—Plasticisers, homogenisers or feeders comprising two or more stages using two or more serially arranged screws in the same barrel
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/52—Screws with an outer diameter varying along the longitudinal axis, e.g. for obtaining different thread clearance
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/53—Screws having a varying channel depth, e.g. varying the diameter of the longitudinal screw trunk
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/505—Screws
    • B29C48/535—Screws with thread pitch varying along the longitudinal axis
    • 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
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

1one

Изобретение относитс  к области переработки термопластов, в частности касаетс  черв чного пресса дл  мпогоручьевой экструзии полимеров.The invention relates to the field of thermoplastics processing, in particular, to a screw press for multi-layer extrusion of polymers.

Известен черв чный пресс дл  многоручьевой экструзии полимеров, содержаи ;ий цилиндрический корпус с выходными каналами дл  подачи расплава к экструзионным головкам и размещенный в нем черв к с секци ми.A screw press is known for multi-extrusion of polymers containing a cylindrical body with outlet channels for feeding the melt to the extrusion heads and a worm placed therein with sections.

Однако в таком черв чном прессе производительность каждой последующей секции черв ка зависит от производительности предыдущей секции. Кроме того, расплав получаетс  неоднородным из-за различного времени пребывани  его в секци х черв ка.However, in such a screw press, the capacity of each subsequent section of the screw depends on the capacity of the previous section. In addition, the melt is heterogeneous due to its different residence time in the worm sections.

С целью повышени  точности дозировани  и однородности расплава секции черв ка в зоне выходных каналов разделены на камеры, кажда  из которых соединена с выходным каналом и с полостью перед первой по ходу движени  расплава камерой.In order to improve the metering accuracy and homogeneity of the melt, the worm sections in the zone of the output channels are divided into chambers, each of which is connected to the output channel and to the cavity in front of the first chamber as the melt moves.

На чертеже изображен предлагаемый черв чный пресс, общий вид.The drawing shows the proposed screw press, a general view.

Пресс содержит цилиндрический корпус 1 с выходными каналами 2 дл  цодачи расплава к экструзионным головкам 3, размещенный в корпусе черв к 4 с секци ми 5, разделенными перегородками 6-8 на камеры 9, кажда  из которых соединена с выходным каналом 2 и с полостью перед первой по ходуThe press contains a cylindrical body 1 with output channels 2 for melt flow to extrusion heads 3 placed in a body to 4 with sections 5 divided by partitions 6-8 into chambers 9 each of which is connected to output channel 2 and with a cavity in front of the first along the way

движени  расплава камерой.melt camera movement.

Работа черв чного пресса дл  многоручьевой экструзии осуществл етс  в следующей последовательности. Вращением черв ка пресса расплав нагнетаетс  в камеры 9, из которых равномерно через выходные каналы 2 поступает к экструзионным головкам 3.The worm press for multi-strand extrusion is carried out in the following sequence. By rotating the screw of the press, the melt is injected into chambers 9, of which evenly through the output channels 2 flows to the extrusion heads 3.

Предмет изобретени Subject invention

Черв чный пресс дл  многоручьевой экструзии полимеров, содержащий цилиндрический корпус с выходными каналами дл  подачи расплава к экструзионным головкам и размещенный в нем черв к с секци ми, отличающийс  тем, что, с целью повыщени  точности дозировани  и однородности расплава , в нем секции черв ка в зоне выходных каналов разделены перегородками на камеры, кажда  из которых соединена с выходнымA screw press for multi-stream extrusion of polymers containing a cylindrical body with outlet channels for feeding the melt to the extrusion heads and a screw-hole in it with sections, characterized in that, in order to improve the metering accuracy and uniformity of the melt, the section of the screw in zone of the output channels are divided by partitions into chambers, each of which is connected to the output

каналом и с полостью перед первой по ходу движени  расплава камерой.the channel and the cavity in front of the first chamber during the melt movement.

SU2041025A 1974-07-05 1974-07-05 Worm press for multi-extrusion of polymers SU497156A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU2041025A SU497156A1 (en) 1974-07-05 1974-07-05 Worm press for multi-extrusion of polymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU2041025A SU497156A1 (en) 1974-07-05 1974-07-05 Worm press for multi-extrusion of polymers

Publications (1)

Publication Number Publication Date
SU497156A1 true SU497156A1 (en) 1975-12-30

Family

ID=20590005

Family Applications (1)

Application Number Title Priority Date Filing Date
SU2041025A SU497156A1 (en) 1974-07-05 1974-07-05 Worm press for multi-extrusion of polymers

Country Status (1)

Country Link
SU (1) SU497156A1 (en)

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