NL9401746A - Filter cloth fabric. - Google Patents

Filter cloth fabric. Download PDF

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Publication number
NL9401746A
NL9401746A NL9401746A NL9401746A NL9401746A NL 9401746 A NL9401746 A NL 9401746A NL 9401746 A NL9401746 A NL 9401746A NL 9401746 A NL9401746 A NL 9401746A NL 9401746 A NL9401746 A NL 9401746A
Authority
NL
Netherlands
Prior art keywords
fabric
polymer material
dimensions
crystallization
degree
Prior art date
Application number
NL9401746A
Other languages
Dutch (nl)
Inventor
Marcellus Franciscus Mari Beek
Gerhardus Hermanus Ter Beek
Original Assignee
Hand Safe Holland Bv
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
Priority claimed from NL9400594A external-priority patent/NL9400594A/en
Application filed by Hand Safe Holland Bv filed Critical Hand Safe Holland Bv
Priority to NL9401746A priority Critical patent/NL9401746A/en
Priority to AU21495/95A priority patent/AU2149595A/en
Priority to PCT/NL1995/000136 priority patent/WO1995028216A1/en
Priority to EP95914577A priority patent/EP0758262A1/en
Publication of NL9401746A publication Critical patent/NL9401746A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/283—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads synthetic polymer-based, e.g. polyamide or polyester fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/176—Filter presses, i.e. of the plate or plate and frame type attaching the filter element to the filter press plates, e.g. around the central feed hole in the plates
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/30—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the fibres or filaments
    • D03D15/37—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the fibres or filaments with specific cross-section or surface shape
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/41—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific twist
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D9/00—Open-work fabrics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0464—Impregnants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material
    • B01D2239/0659—The layers being joined by needling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1216—Pore size
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
    • D10B2321/0211—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene high-strength or high-molecular-weight polyethylene, e.g. ultra-high molecular weight polyethylene [UHMWPE]
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2401/00—Physical properties
    • D10B2401/10—Physical properties porous
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/04—Filters

Description

Filterdoek-weefselFilter cloth fabric

De uitvinding ligt op het terrein van filterdoeken. Bijvoorbeeld voor de vervaardiging van slijppasta's en dergelijke moet de uit (slijp)korrels bestaande massa uit een vloeibare of viskeus-vloeibare massa worden verwijderd door deze massa met druk door te leiden door een filtereenheid, bijvoorbeeld een zogenaamd "platenfilter", die ten minste één filterdoek omvat. Dit filterdoek wordt door het met kracht door leiden van de massa op druk belast, waardoor in het doek trekkrachten optreden. Om die reden wordt voor dit soort toepassingen van weefsels gebruik gemaakt, waarvan de draden/garens op trek belastbaar zijn. Verder moet het weefsel zeer goed bestand zijn tegen de zware mechanische beïnvloeding door de ten dele tegengehouden en ten dele doorgelaten korrels.The invention is in the field of filter cloths. For example, for the production of grinding pastes and the like, the (grinding) granule mass must be removed from a liquid or viscous liquid mass by passing this mass under pressure through a filter unit, for example a so-called "plate filter", containing at least one filter cloth. This filter cloth is pressurized by the force being passed through the mass, so that tensile forces occur in the cloth. For this reason, use is made of fabrics of this type, for which the threads / yarns are tensile resistant. Furthermore, the fabric must be highly resistant to the heavy mechanical influence of the partially retained and partially passed granules.

Tot heden is het niet gelukt, een weefsel te ontwerpen, dat in voldoende mate bestand is tegen de optredende krachten. Bij een te grote rekbaarheid van de toegepaste weefsels kan niet voorkomen worden, dat de door de weefseldraden bepaalde poriën groter worden, naarmate de door het medium op het doek uitgeoefende drukkracht toeneemt. Voor filtreerdoeleinden is dit zeer ongewenst, daar het vereist is, dat de poriën-grootte binnen relatief nauwe grenzen beheerst is.It has hitherto not been possible to design a fabric which is sufficiently resistant to the forces occurring. If the fabrics used are too stretchable, it cannot be prevented that the pores determined by the fabric threads increase as the pressure force exerted by the medium on the fabric increases. This is very undesirable for filtering purposes since it is required that the pore size be controlled within relatively narrow limits.

Verder zijn de filterdoeken volgens de stand der techniek onvoldoende slijtage-bestendig.Furthermore, the filter cloths according to the prior art are insufficiently wear resistant.

De bestaande filters lijden derhalve aan een bij gebruik toenemend capaciteitsverlies, een zeker materiaalverlies als gevolg van de onbedoelde doorlating van tegen te houden vaste stof, waardoor vervolgens een milieuprobleem kan optreden, daar het filtraat nog deeltjes bevat met afmetingen boven de norm.The existing filters therefore suffer from an increasing loss of capacity during use, a certain loss of material as a result of the unintentional transmission of solid material to be retained, which can subsequently cause an environmental problem, since the filtrate still contains particles with dimensions above the standard.

De uitvinding beoogt, een oplossing te bieden voor de genoemde problemen volgens de stand der techniek en verschaft daartoe een weefsel ten gebruike als filterdoek, welk weefsel polymeermateriaal, bestaande uit filamenten/vezels met een parallelle oriëntatie van ten minste 80% omvat. De conclusies 2, 3 en 4 geven toenemende gradaties van voorkeur.The object of the invention is to provide a solution to the aforementioned problems according to the prior art and to that end provides a fabric for use as a filter cloth, which fabric comprises polymer material consisting of filaments / fibers with a parallel orientation of at least 80%. Claims 2, 3 and 4 give increasing degrees of preference.

Verder verschaft de uitvinding een weefsel van het genoemde type waarin de kristallisatiegraad van het polymeermateriaal ten minste 60% bedraagt. De conclusies 6, 7 en 8 geven gradaties van toenemende voorkeur.The invention further provides a fabric of said type in which the degree of crystallization of the polymer material is at least 60%. Claims 6, 7 and 8 give increasing degrees of preference.

Voor de uitvinding is wezenlijk, dat voor de draden of garens waaruit het doek bestaat gebruik wordt gemaakt van polymeermateriaal in de vorm van filamenten of vezels met een parallelle oriëntatie, die in principe zo hoog mogelijk is, maar ten minste 80% bedraagt. Geschikte materialen zijn bijvoorbeeld polyetheen, copolymeer met etheen, polyalkylketon. Het zal duidelijk zijn, dat de uitvinding zich niet tot deze materialen beperkt.It is essential for the invention that for the threads or yarns that make up the cloth, use is made of polymer material in the form of filaments or fibers with a parallel orientation, which in principle is as high as possible, but is at least 80%. Suitable materials are, for example, polyethylene, copolymer with ethylene, polyalkyl ketone. It will be clear that the invention is not limited to these materials.

Om de poriën-grootte zo goed mogelijk te kunnen beheersen verdient die uitvoering de voorkeur waarin ketting en inslag gelijk zijn.In order to be able to control the pore size as well as possible, that embodiment is preferred in which warp and weft are equal.

In het bijzonder kan het weefsel van het type met platte binding zijn.In particular, the fabric may be of flat bond type.

Bekend zijn weefsels ten gebruike als filterdoek, waarin de afmetingen van de poriën bijvoorbeeld 10 x 160 jxm bedragen.Tissues for use as filter cloth are known, in which the dimensions of the pores are, for example, 10 x 160 µm.

In een bepaalde uitvoering vertoont het weefsel volgens de uitvinding de bijzonderheid dat de weefseldraden poriën bepalen met afmetingen van maximaal in de orde van 20 x 20 μιη. De conclusies 15, 16 en 17 geven gradaties van toenemende voorkeur.In a particular embodiment, the fabric according to the invention has the special feature that the fabric threads define pores with dimensions of a maximum of the order of 20 x 20 µ. Claims 15, 16 and 17 give increasing degrees of preference.

Tenslotte heeft de uitvinding tevens betrekking op het gebruik van filamenten/vezels van het type Dyneema (merk van de Nederlandse onderneming DSM) voor het hiervoor omschreven weefsel volgens de uitvinding.Finally, the invention also relates to the use of filaments / fibers of the type Dyneema (brand of the Dutch company DSM) for the above-described fabric according to the invention.

Het weefsel volgens de uitvinding zal in het algemeen zeer fijnmazig zijn en zijn gebaseerd op overstrekte filamenten/vezels. De verstrekking van de filamenten/vezels zal bij voorkeur zo ver gaan, dat er in hoofdzaak geen amorfe gedeelten meer in voorkomen.The fabric of the invention will generally be very fine-meshed and based on stretched filaments / fibers. The stretching of the filaments / fibers will preferably go so far that there are essentially no more amorphous parts in them.

Claims (18)

1. Weefsel ten gebruike als filterdoek, welk weefsel polymeermateriaal, bestaande uit filamenten/vezels met een parallelle oriëntatie van ten minste 80% omvat.A fabric for use as a filter cloth, which fabric comprises polymeric material consisting of filaments / fibers with a parallel orientation of at least 80%. 2. Weefsel volgens conclusie l, waarin de parallelle oriëntatie ten minste 85% bedraagt.The fabric of claim 1, wherein the parallel orientation is at least 85%. 3. Weefsel volgens conclusie 1, waarin de parallelle oriëntatie ten minste 90% bedraagt.The fabric of claim 1, wherein the parallel orientation is at least 90%. 4. Weefsel volgens conclusie 1, waarin de parallelle oriëntatie ten minste 95% bedraagt.The fabric of claim 1, wherein the parallel orientation is at least 95%. 5. Weefsel volgens conclusie 1, waarin de kristallisatiegraad van het polymeermateriaal ten minste 60% bedraagt.The fabric of claim 1, wherein the degree of crystallization of the polymer material is at least 60%. 6. Weefsel volgens conclusie 5, waarin de kristallisatiegraad van het polymeermateriaal ten minste 70% bedraagt.The fabric of claim 5, wherein the degree of crystallization of the polymer material is at least 70%. 7. Weefsel volgens conclusie 5, waarin de kristallisatiegraad van het polymeermateriaal ten minste 80% bedraagt.The fabric of claim 5, wherein the degree of crystallization of the polymer material is at least 80%. 8. Weefsel volgens conclusie 5, waarin de kristallisatiegraad van het polymeermateriaal ten minste 85% bedraagt.The fabric of claim 5, wherein the degree of crystallization of the polymer material is at least 85%. 9. Weefsel volgens conclusie 1, waarin het polymeermateriaal polyetheen bevat.The fabric of claim 1, wherein the polymer material contains polyethylene. 10. Weefsel volgens conclusie 1, waarin het polymeermateriaal copolymeer met etheen bevat.The fabric of claim 1, wherein the polymeric material contains copolymer with ethylene. 11. Weefsel volgens conclusie 1, waarin het polymeermateriaal polyalkylketon omvat.The fabric of claim 1, wherein the polymer material comprises polyalkyl ketone. 12. Weefsel volgens conclusie 1, waarin ketting en inslag gelijk zijn.The fabric of claim 1, wherein warp and weft are equal. 13. Weefsel volgens conclusie 1, waarin het weefsel van het type met platte binding is.The fabric of claim 1, wherein the fabric is of the flat bond type. 14. Weefsel volgens conclusie 1, waarin de weefseldraden poriën bepalen met afmetingen van maximaal in de orde van 20 x 20 μτα.Tissue according to claim 1, wherein the tissue threads define pores with dimensions of up to the order of 20 x 20 μτα. 15. Weefsel volgens conclusie 11, waarin de weefseldraden poriën bepalen met afmetingen van maximaal in de orde van 15 x 15 μη.The fabric of claim 11, wherein the fabric threads define pores with dimensions of up to the order of 15 x 15 μη. 16. Weefsel volgens conclusie 11, waarin de weefseldraden poriën bepalen met afmetingen van maximaal in de orde van 10 x 10 /zm.The fabric of claim 11, wherein the fabric threads define pores with dimensions of up to the order of 10 x 10 / zm. 17. Weefsel volgens conclusie 11, waarin de weefseldraden poriën bepalen met afmetingen van maximaal in de orde van 5 x 5 μη.Tissue according to claim 11, wherein the tissue threads define pores with dimensions of up to the order of 5 x 5 μη. 18. Het gebruik van filamenten/vezels van het type Dyneema (merk van de Nederlandse onderneming DSM) voor het weefsel volgens een der voorgaande conclusies.The use of Dyneema filaments / fibers (brand of the Dutch company DSM) for the fabric according to any one of the preceding claims.
NL9401746A 1994-04-14 1994-10-20 Filter cloth fabric. NL9401746A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL9401746A NL9401746A (en) 1994-04-14 1994-10-20 Filter cloth fabric.
AU21495/95A AU2149595A (en) 1994-04-14 1995-04-13 Filter cloth
PCT/NL1995/000136 WO1995028216A1 (en) 1994-04-14 1995-04-13 Filter cloth
EP95914577A EP0758262A1 (en) 1994-04-14 1995-04-13 Filter cloth

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NL9400594 1994-04-14
NL9400594A NL9400594A (en) 1994-04-14 1994-04-14 Filter cloth fabric
NL9401746A NL9401746A (en) 1994-04-14 1994-10-20 Filter cloth fabric.
NL9401746 1994-10-20

Publications (1)

Publication Number Publication Date
NL9401746A true NL9401746A (en) 1995-11-01

Family

ID=26647205

Family Applications (1)

Application Number Title Priority Date Filing Date
NL9401746A NL9401746A (en) 1994-04-14 1994-10-20 Filter cloth fabric.

Country Status (4)

Country Link
EP (1) EP0758262A1 (en)
AU (1) AU2149595A (en)
NL (1) NL9401746A (en)
WO (1) WO1995028216A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007007256B3 (en) * 2007-02-14 2008-04-03 H. Putsch Gmbh & Comp. Kg Filter plate for membrane and chamber filter presses, used to process sugar-containing juices, has cloths with tubular connections and openings widened over edges of inlet channel
CN108654156A (en) * 2018-05-28 2018-10-16 沈智奇 Automatic high pressure filter press and its press filtration slag dumping back-flushing method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB500669A (en) * 1937-12-23 1939-02-14 John Stanley Heath Improvements in or relating to cloths for filter-presses
FR1373101A (en) * 1963-08-05 1964-09-25 Lindsay Wire Weaving Co Porous structure or fabric and its manufacturing process
FR1401265A (en) * 1964-04-01 1965-06-04 Tissmetal Lionel Dupont filter element in particular for filter presses
DE2905423C2 (en) * 1979-02-13 1981-12-24 Passavant-Werke Michelbacher Hütte, 6209 Aarbergen Filter fabric
US4663101A (en) * 1985-01-11 1987-05-05 Allied Corporation Shaped polyethylene articles of intermediate molecular weight and high modulus
SU1641400A1 (en) * 1988-12-28 1991-04-15 Ленинградский институт текстильной и легкой промышленности им.С.М.Кирова Process for producing woven filtering aid

Also Published As

Publication number Publication date
EP0758262A1 (en) 1997-02-19
AU2149595A (en) 1995-11-10
WO1995028216A1 (en) 1995-10-26

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