WO2005056273A1 - Schmelzefilter für die reinigung von kunststoffschmelzen - Google Patents
Schmelzefilter für die reinigung von kunststoffschmelzen Download PDFInfo
- Publication number
- WO2005056273A1 WO2005056273A1 PCT/EP2004/014093 EP2004014093W WO2005056273A1 WO 2005056273 A1 WO2005056273 A1 WO 2005056273A1 EP 2004014093 W EP2004014093 W EP 2004014093W WO 2005056273 A1 WO2005056273 A1 WO 2005056273A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- melt
- filter element
- changing station
- filter elements
- Prior art date
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
- B29C48/69—Filters or screens for the moulding material
- B29C48/691—Arrangements for replacing filters, e.g. with two parallel filters for alternate use
- B29C48/6914—Arrangements for replacing filters, e.g. with two parallel filters for alternate use the filters being fitted on a rotatable or pivotable disc or on the circumference of a rotatable or pivotable cylinder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
-
- 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
- B29C48/04—Particle-shaped
Definitions
- the invention relates to a melt filter for cleaning plastic extrusions delivered by extruders in particular, comprising a screen disk rotatably drivable by means of a power operated jack drive between two housings forming a filter element changing station, which has recesses for receiving exchangeable filter elements separated by webs along a circular path , which are supported by means of perforated discs against the forces occurring in them due to the pressure drop occurring in the flow direction of the plastic melt, and with the boards in the region of the circular path piercing, the filter elements with melt acting, widening towards the filter elements melt channel.
- melt filters belong z. Example, by EP 0 114 651 B1 to the prior art.
- the known melt filter has a very large and therefore expensive screen disc, whose filter element changing station is also very large and their flowed surface of the screen plate, however, is very small, so that there is an extremely poor efficiency.
- EP 0 569 866 A1 already proposes widening the melt channel to the filter elements, so that two filter elements can be simultaneously flowed through by the melt to be filtered. But even here, large areas of the filter elements are not flown, resulting in a similarly poor efficiency.
- the pawls on the sieve disk have a relatively large pitch, so that when the sieve disk rotates further, large areas of the soiled filter elements are exchanged for correspondingly large areas of undiluted filter elements. This results in pressure differences in the cleaned melt, which in a further processing of the Melting can not be tolerated, so that often more pumps are needed to ensure a constant pressure of the purified melt.
- DE 42 12 928 A1 already discloses a larger-area coverage of a screen disk, however, large areas of the screen disk are still exposed to the ambient air when it is rotated, so that unwanted changes in the plastic can result.
- the invention has for its object to show the smallest possible melt filter in which hardly any unintentional changes in the plastic result during operation, which ensures even at high pressures a filter element exchange at approximate pressure stability and yet is inexpensive to buy.
- the boards completely cover the screen disk, wherein at least one of the boards is interrupted by the filter element changing station, and that the filter element changing station is larger than a filter element and less than or equal to the size of two filter elements.
- At least one of the boards has a reversibly movable area covering the filter element changing station, the filter disk is completely covered during filter operation and flush with the screen disk, and that the filter element changeover station is exposed for the filter element replacement to be carried out during filter operation.
- higher pressures can be achieved by the complete covering of the sieve disk, on the other hand it is ensured that no plastic melt adhering to the sieve disk comes into contact with the ambient air during operation.
- the respective distance between the infiltrated filter elements and the filter element changing station is greater than or equal to the width dimension of a filter element and a web and smaller than the width dimension of the second filter elements and a web. This ensures that the smallest possible filter element changing station the largest possible surface of the screen disk is flowed through by melt, without the melt can be pressed out of the filter element changing station.
- the ratio of the flowed web surface to the flow area of the screen disk is less than 18% and greater than 12%. This ensures that the webs are of such dimensions that they can still withstand the high pressures, but oppose the melt to be filtered as small as possible to not filter surfaces to be filtered, so that the largest possible filter surface can be effective. It has been proven that the ratio of the flowed land area to the area flowed through is 15 ⁇ 1%. In order to be able to guarantee a constant pressure during the filter change, it is expedient that, per stroke of the pawl drive, a maximum of 10% of the area of the sieve disk flowed against by the plastic melt is exchangeable with corresponding filter disk surfaces with unused filter elements.
- the invention will be explained in more detail with reference to a drawing.
- the figure shows a melt filter 1, which consists of a housing 2, a screen disc 3 and a pawl drive 4.
- the housing 2 is formed by a circuit board 5, which are connected via connecting elements 6 with a dashed lines shown in the other circuit board 5 '.
- the boards 5, 5 ' include between the screen plate 3 a.
- a filter element changing station 7 is shown, which corresponds substantially to the size of a filter element 8.
- the board 5 has a melt channel 9, which widens towards the screen plate 3 in the form of a ring segment 10.
- the screen plate 3 has 8 webs 11 in addition to the filter elements. At the periphery of the screen plate pawls 12 are arranged, which cooperate with the pawl drive 4. A ring 13 connects the webs 11 with each other.
- the filter element changing station 7 is chosen as small as possible, can be enclosed by the boards 5, a large part of the screen plate 3. In this way, the largest possible pressure present in the melt channel can be processed without jamming the screen disk 3 in the housing 2.
- the webs 11 and the circumferential rim 13 of the screen disk 3 lie on the boards 5, 5 'and seal the melt channel 9 and the ring segment 10 to the outside.
- the ring segment 10 thereby spans the webs 11 'to 11'"" and the filter elements 8 'to 8 "".
- the ratio of the size of the inflow surface to the distance to the filter element changing station and the sizes of the filter element changing station are determined by the ratios according to the invention achieved optimal ratio, so that even with a small screen plate 3 at high pressures, the melt can be optimally filtered with good pressure stability.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Filtering Materials (AREA)
- Detergent Compositions (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502004003318T DE502004003318D1 (de) | 2003-12-12 | 2004-12-10 | Schmelzefilter für die reinigung von kunststoffschmelzen |
EP04803738A EP1691965B1 (de) | 2003-12-12 | 2004-12-10 | Schmelzefilter für die reinigung von kunststoffschmelzen |
BRPI0417507-7A BRPI0417507B1 (pt) | 2003-12-12 | 2004-12-10 | Filtro de massa fundida para a purificação de massas fundidas de plástico |
PL04803738T PL1691965T3 (pl) | 2003-12-12 | 2004-12-10 | Filtr do substancji w stanie stopionym do oczyszczania stopionych tworzyw sztucznych |
JP2006543492A JP4637116B2 (ja) | 2003-12-12 | 2004-12-10 | プラスチック溶融物を浄化するための溶融物フィルタ |
US10/582,275 US8202423B2 (en) | 2003-12-12 | 2004-12-10 | Melt filter for purifying plastic melts |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10358672.5 | 2003-12-12 | ||
DE10358672A DE10358672A1 (de) | 2003-12-12 | 2003-12-12 | Schmelzfilter für die Reinigung von Kunststoffschmelzen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005056273A1 true WO2005056273A1 (de) | 2005-06-23 |
Family
ID=34672746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/014093 WO2005056273A1 (de) | 2003-12-12 | 2004-12-10 | Schmelzefilter für die reinigung von kunststoffschmelzen |
Country Status (10)
Country | Link |
---|---|
US (1) | US8202423B2 (de) |
EP (1) | EP1691965B1 (de) |
JP (1) | JP4637116B2 (de) |
CN (1) | CN100441397C (de) |
AT (1) | ATE357327T1 (de) |
BR (1) | BRPI0417507B1 (de) |
DE (2) | DE10358672A1 (de) |
PL (1) | PL1691965T3 (de) |
RU (1) | RU2343070C2 (de) |
WO (1) | WO2005056273A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7976706B2 (en) | 2006-11-28 | 2011-07-12 | Gneuss Kunststofftechnik Gmbh | Melt filter |
EP2601036A2 (de) | 2010-08-03 | 2013-06-12 | Cramer, Isabel | Schmutzabscheider für hochviskose medien |
WO2018121817A1 (de) * | 2017-01-02 | 2018-07-05 | Gneuss Gmbh | Siebrad-filtriervorrichtung für mittel- bis hochviskose fluide und abdicht- und montageverfahren dafür |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011106244A1 (de) | 2011-04-01 | 2012-10-04 | Georg Utz Holding Ag | Verfahren und Vorrichtung zur Aufbereitung verschmutzter/vermischter Kunststoffe |
DE102013208628A1 (de) * | 2013-05-10 | 2014-11-13 | Gneuss Gmbh | Verfahren zum Betreiben eines Siebradfilters und Siebradfilter zur Durchführung des Verfahrens |
DE102013208637A1 (de) | 2013-05-10 | 2014-11-13 | Gneuss Gmbh | Verfahren und Vorrichtung zum Betreiben eines Siebradfilters |
DE102013216973A1 (de) | 2013-05-16 | 2014-11-20 | Gneuss Gmbh | Schmelzefilter mit einer Antriebsvorrichtung für eine drehbare Siebscheibe |
EP3308940A1 (de) * | 2016-10-17 | 2018-04-18 | Next Generation Analytics GmbH | Filtersystem für viskose oder hochviskose flüssigkeiten, insbesondere kunststoffschmelzen und verfahren zur filtration von viskosen oder hochviskosen flüssigkeiten |
US11260570B2 (en) * | 2018-05-07 | 2022-03-01 | PSI-Polymer Systems, Inc. | Filtration apparatuses and screen changer devices for polymer processing and related methods |
DE102018120445B3 (de) * | 2018-08-22 | 2020-01-02 | Gneuss Gmbh | Filtriervorrichtung für hochviskose Medien |
WO2021229111A1 (es) | 2020-05-12 | 2021-11-18 | Laboratorios Farmacéuticos Rovi, S.A. | Procedimiento para la purificación de partículas poliméricas termoplásticas biodegradables para uso médico y/o farmacéutico |
DE102022108498A1 (de) * | 2022-04-07 | 2023-10-12 | Gneuss Gmbh | Siebrad-Filtriervorrichtung für die Hochdruckfiltration einer Kunststoffschmelze |
DE102022108497A1 (de) * | 2022-04-07 | 2023-10-12 | Gneuss Gmbh | Siebrad-Filtriervorrichtung für die Hochdruckfiltration einer Kunststoffschmelze |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4235523C1 (de) * | 1992-10-21 | 1993-12-16 | Gneuss Kunststofftechnik Gmbh | Siebvorrichtung für Kunststoffschmelzen |
US20030230527A1 (en) * | 2002-06-07 | 2003-12-18 | Gneuss Kunststofftechnik Gmbh | Cleaning device for sieve discs |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3302343C2 (de) * | 1983-01-25 | 1985-10-24 | Rehau Plastiks Ag + Co, 8673 Rehau | Siebwechselvorrichtung |
SU1321594A1 (ru) | 1986-02-28 | 1987-07-07 | Специальное Конструкторско-Технологическое Бюро Химико-Фотографической Промышленности | Фильтр к черв чной машине дл переработки полимерных материалов |
DE4212928A1 (de) * | 1992-04-21 | 1993-10-28 | Gneuss Kunststofftechnik Gmbh | Filter für Kunststoffschmelzen |
EP0569866B1 (de) * | 1992-05-11 | 1996-03-13 | GNEUSS KUNSTSTOFFTECHNIK GmbH | Filter für Kunststoffschmelzen |
DE4240461C1 (de) * | 1992-12-02 | 1993-12-09 | Gneuss Kunststofftechnik Gmbh | Schmelzefilter für die Reinigung von Kunststoffschmelzen |
US5449548A (en) * | 1994-11-28 | 1995-09-12 | Bowen, Jr.; David | Table, reduced permeability papermaker's fabrics containing fibers with fins designed to distort at lower force levels by having a reduced cross sectional area within the fin |
DE29908735U1 (de) * | 1999-05-18 | 1999-09-02 | KoSa GmbH & Co. KG, 60528 Frankfurt | Filtereinrichtung für die Reinigung von Kunststoffschmelzen |
-
2003
- 2003-12-12 DE DE10358672A patent/DE10358672A1/de not_active Withdrawn
-
2004
- 2004-12-10 BR BRPI0417507-7A patent/BRPI0417507B1/pt active IP Right Grant
- 2004-12-10 DE DE502004003318T patent/DE502004003318D1/de active Active
- 2004-12-10 EP EP04803738A patent/EP1691965B1/de active Active
- 2004-12-10 JP JP2006543492A patent/JP4637116B2/ja active Active
- 2004-12-10 WO PCT/EP2004/014093 patent/WO2005056273A1/de active Application Filing
- 2004-12-10 RU RU2006124849/12A patent/RU2343070C2/ru active
- 2004-12-10 US US10/582,275 patent/US8202423B2/en active Active
- 2004-12-10 AT AT04803738T patent/ATE357327T1/de active
- 2004-12-10 PL PL04803738T patent/PL1691965T3/pl unknown
- 2004-12-10 CN CNB2004800369171A patent/CN100441397C/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4235523C1 (de) * | 1992-10-21 | 1993-12-16 | Gneuss Kunststofftechnik Gmbh | Siebvorrichtung für Kunststoffschmelzen |
US20030230527A1 (en) * | 2002-06-07 | 2003-12-18 | Gneuss Kunststofftechnik Gmbh | Cleaning device for sieve discs |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7976706B2 (en) | 2006-11-28 | 2011-07-12 | Gneuss Kunststofftechnik Gmbh | Melt filter |
EP2601036A2 (de) | 2010-08-03 | 2013-06-12 | Cramer, Isabel | Schmutzabscheider für hochviskose medien |
DE102010036810B4 (de) * | 2010-08-03 | 2018-05-30 | Nordson Holdings S.À R.L. & Co. Kg | Schmutzabscheider für hochviskose Medien |
WO2018121817A1 (de) * | 2017-01-02 | 2018-07-05 | Gneuss Gmbh | Siebrad-filtriervorrichtung für mittel- bis hochviskose fluide und abdicht- und montageverfahren dafür |
KR20190095314A (ko) * | 2017-01-02 | 2019-08-14 | 그노이쓰 게엠베하 | 중점도 내지 고점도 유체용 회전 스크린 필터링 장치 및 이를 위한 밀봉 및 실장 방법 |
RU2705080C1 (ru) * | 2017-01-02 | 2019-11-01 | Гнойсс Гмбх | Фильтрующее устройство с барабанным ситом для средневязких и высоковязких текучих сред и способ его уплотнения и монтажа |
KR102275236B1 (ko) | 2017-01-02 | 2021-07-09 | 그노이쓰 게엠베하 | 중점도 내지 고점도 유체용 회전 스크린 필터링 장치 및 이를 위한 밀봉 및 실장 방법 |
EP3888881A1 (de) | 2017-01-02 | 2021-10-06 | Gneuss GmbH | Siebrad-filtriervorrichtung für mittel- bis hochviskose fluide und abdicht- und montageverfahren dafür |
Also Published As
Publication number | Publication date |
---|---|
US20080314815A1 (en) | 2008-12-25 |
DE502004003318D1 (de) | 2007-05-03 |
US8202423B2 (en) | 2012-06-19 |
CN1890078A (zh) | 2007-01-03 |
BRPI0417507A (pt) | 2007-03-13 |
RU2343070C2 (ru) | 2009-01-10 |
DE10358672A1 (de) | 2005-07-21 |
JP4637116B2 (ja) | 2011-02-23 |
RU2006124849A (ru) | 2008-01-20 |
ATE357327T1 (de) | 2007-04-15 |
EP1691965A1 (de) | 2006-08-23 |
BRPI0417507B1 (pt) | 2014-01-21 |
PL1691965T3 (pl) | 2007-08-31 |
JP2007513806A (ja) | 2007-05-31 |
EP1691965B1 (de) | 2007-03-21 |
CN100441397C (zh) | 2008-12-10 |
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