filtration – filter press technology - · pdf file · 2015-03-252 sefar...

Filter Press

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Sefar Filter Press TechnologySefar provides filter solutions for the main types of filter presses used in the process industries,

based on fabrics that have been developed to meet the needs of our customers. Sefar and

original equipment manufacturers have been collaborating for a long time in order to optimize

each customer’s process. With Sefar, you get integrated solutions from one source. Take a

look at the solutions and technologies we offer for your filter press application and you will

be convinced of their outstanding quality.

Sefar Filter Press Technology

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High quality and traceability: from yarn production and weaving to the fabrication of ready-to-use filters, all steps in-house

More than 50 years experience in the process industry

Complete fabric range made from different polymers (e.g PP, PET, PBT, …), available in pore sizes from 5 to 120 µm

Yarn production Weaving

Smooth surface treatmentHeat setting

Fabrication

Filter performances are mainly defined

by the fabric. Over the last few decades,

Sefar has continually developed state-

of-the-art fabric finishing, with the

required properties of dimensional sta-

bility and a smooth surface.

Multifilament

Monofilament, multifilament and mixed

mono- and multifilament fabrics are

available to cover the needs of custom

made as well as standard filter press

applications.

Solutions from one source

Monofinalment

Quality

Experience

Fabric range

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Filtrate analysis | Particle size distribution

Development

High-tech laboratory

Technical drawing

Fabric analysis | Pore size distribution

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Nu

mb

er

2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013

Pore size [µm]

Services

Sefar has a fully-equipped laboratory

having standard or specifically-designed

apparatus in order to replicate the

customer‘s process so that we can

analyze the behavior of our fabric in

all conditions.

Product development takes all appli-

cation variables into consideration to

ensure optimal performance.

Sefar uses the high technology of 3D

drawings to ensure our products are

perfectly adapted to each type of plate.

Sefar‘s high-tech laboratory offers individual service to your application

Customized solutions that meet the industry’s most stringent requirements (e.g. rubber neck or non-metallic eyelets)

Laboratory analysis

Product development

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Coating Laser cutting Modern sewing

Reinforcement for iron plateSupport and filter cloths coupled

Fabrication Solutions

The filter cloths from Sefar are adapted

to the needs of the customers, such as

plate dimensions, cake weight require-

ment, particle retention or productivity.

For that, Sefar has developed a wide

range of standard and specific closure

systems and edge treatments, together

with barrel and rubber neck fittings.

After laboratory analysis and engineering, Sefar is able to produce precisely customized solutions in its modern production facilities

Subsidiaries and fabrication centers in 25 countries on 5 continents provide local technical service for the broad range of solutions

Customized solutions

World wide support

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Chemical and Mineral Processing

Color pigments, silicates, zeolites, coal, TiO2 and other mined and quarried materials

In terms of quality and productivity, Sefar satisfies the required high level of performance

by using strong woven fabrics, adapting the correct pore size to the application. By using

Sefar, you also ensure complete product traceability – from the cloth‘s yarn, to the fabric

weaving, through the high precision fabrication of the final filter press cloth. Especially

under aggressive conditions due to extreme pH values or high temperature (caused by the

process or exothermic reactions), specific chemical components like solvents, oxidants, an

abrasive slurry, or a heavy cake, Sefar products offer reliability of the filtration process.

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Rubber neckLarge range of rubber necks and specialties such as diffusion ring replacements.

Coating Available on edges and also on the feed hole

Non-metallic eyelet To perfectly match the conditions of aggressive filter substances (only available in Europe)

pH- and temperature-resistant materialTo cope with the demanding requirements of mineral applications

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Acid

ph-Meter Alkaline

Co

tton

°C

180

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20

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PVC

PA11

PETPA6/PA6.6

PVDF

PA6.10

PA12

PPPB

T

Filtration substances in chemical appli-

cations can be very aggressive. Sefar

filter press cloths are designed to be

able to cope with the challenging re-

quirements of your process.

For each hotspot (feed hole or edges)

Sefar can provide a solution to ensure

perfect sealing.

On request, Sefar can provide a

statement of compliance with your

order according to EN 10204:2004.

Chemical and Mineral Processing

In-house quality monitoring from yarn production to fabrication of ready-to-use filter-press cloths

Leak-proof elements, filter cloth pore sizes down to 5 µm, precise stitching and sewing

Resistant fabric material and unique make-up elements (e.g. non-metallic eyelets, coating)

Process reliability

Excellent particle retention

Chemical resistance

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Environment

Sludge dewatering

For urban and industrial sludge dewatering, there are many different ways of preparing the

sludge (mainly coagulation and flocculation). Mineral filter aids, such as ferric chloride and limes

or polymers, are commonly used – and each water treatment has its own characteristics. Sefar

solutions for filter press applications take these requirements into account, while also including

two other crucial success factors: fast filtration cycles and low labor costs.

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Productivity and performance

Not treatedCake sticks on the fabric

TreatedTo ensure a good cake release

Sefar has developed fabrics for environ-

mental applications having specific

weaves and a high level of calendering.

These fabrics ensure excellent cake re-

lease and an optimal cleaning capacity

during their entire life-time.

Our filter press solutions are selected in

order to perfectly match the conditions

of your slurry preparation. This produces

a high filtration performance and results

in higher-production filtration cycles.

Environment

Sefar has pioneered fabric surface

treatments, and owns unique equip-

ment and know-how to be able to

obtain a really non-stick fabric surface.

Optimal cleaning processExcellent cake release

Special thermal treatment for unique surface properties

Because of the outstanding cake release properties of the fabrics

Perfect match between fabric and all types of slurry preparation

Better cake release

Low maintenance

Filtration performance

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Food and Beverage

Beer, cane and beet sugar, oil, wine

In many food and beverage applications, conformity to hygienic and safety guidelines is

imperative. For this reason, a reliable supplier like Sefar – able to provide you FDA or EU

compliant fabrics for filter products – is crucial to your success. You can also count on Sefar’s

consistent supply of products during seasonal production peaks, which are common in food

applications (e.g. the sugar industry).

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Pure filtrate

Specific designs such as a sealing plateFood conformity label

Sefar supports you in responding to

the increasing regulations in the food

and beverage industry by supplying all

the necessary declarations of confor-

mity.

Sefar offers durable fabrics that are

specifically chosen for your process

and deliver highly productive results;

pure filtrate and very dry filter cake,

for example.

Sefar constantly improves its filter

cloth solutions by having long-time

cooperation with leading equipment

manufacturers in all types of food and

beverage applications.

Very dry cake

Food and Beverage

COMPLIA

NT

FDA

and EU

KONFO

RM

EU u

nd FDA

Declarations of food regulation conformity (FDA and EU 10/2011)

Co-operation with leading equipment manufacturers

Long equipment life for high productivity and optimal results

Regulation conformity

Customized solutions

High productivity

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Sefar worldwideSefar is the leading manufacturer of precision fabrics from monofilaments for the screen printing and filtration market. Sefar products are used in a wide variety of industries, reaching from electronics, graphics, medical, automotive, food and pharmaceutical applications to aerospace, mining & refining and architecture. With its profound understanding of the applications Sefar helps its customers to achieve optimum results in their industrial processes. Subsidiaries and fabrications centers in 25 countries on 5 continents provide local technical service for the broad range of solutions offered by Sefar.

Subsidiaries Asia

China – SuzhouPhone +86 512 6283 6383info.cn@sefar.com

India – District ThanePhone +91 2522 2940-34 /35 /36info.in@sefar.com

Indonesia – Jakarta BaratPhone +62 21 5890 2065 /66 /68info.id@sefar.com

Japan – OsakaPhone +81 64 709 1070info.jp@sefar.com

SingaporePhone +65 6299 9092info.sg@sefar.com

Malaysia – JohorPhone +60 786 771 88info.my@sefar.com

Thailand – BangkokPhone +66 261 887 78info.th@sefar.com

Vietnam – Ho Chi Minh CityPhone +84 862 925 562/3info.vn@sefar.com

Subsidiaries Europe

England – BuryPhone +44 161 765 3530sales@sefar.co.uk

France – LyonPhone +33 472 13 14 15vente@sefar-fyltis.fr

Germany – EdlingPhone +49 8071 90400 0info@sefar.de

Italy – CollegnoPhone +39 011 42 001info@sefar.it

Netherlands – LochemPhone +31 573 25 82 50info@sefar.nl

Poland – PoznanPhone +48 511 467 467biuro.pl@sefar.com

Spain – CardedeuPhone +34 93 844 47 10info.maissa@sefar.com

Turkey – AnkaraPhone +90 312 287 34 14info.tr@sefar.com

Headquarters

Sefar AGHinterbissaustrasse 129410 Heiden – SwitzerlandPhone +41 71 898 57 00Fax +41 71 898 57 21filtration@sefar.comwww.sefar.com

Our most current general sales conditions shall apply.Please consult the most current local product data sheet prior to any use.

Subsidiaries Americas

USA – BuffaloPhone +1 800 995 0531sales@sefar.us

Canada – SaguenayPhone +1 418 690 0888info.bdh@sefar.com

Brazil – São Bernardo do CampoPhone +55 11 4390 6300contato.brasil@sefar.com

Mexico – Cuautitlan IzcalliPhone +52 55 2291 0652info.mexico@sefar.com

Subsidiaries Australia & New Zealand

Australia – HuntingwoodPhone +61 2 8822 1700oceaniasales@sefar.com

New Zealand – AucklandPhone +64 9 622 3330salesnz@sefar.com