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Dauji Engineering Limited
Faridabad, Haryana, India
gstGST : 06AAACD2205M1ZZ Add Review

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FILTER PAPER COATING PLANT

The Coating Unit provides strength to the filter paper media by bonding it with resin and providing corrugations over it. In the Coating Unit, the filter media is processed and fed gradually through following four stations:


Unwinding and Coating Station


Unwinding station houses 02(two) numbers of loading/un-loading shaft to hold paper reels
Motion of the un-loading shafts controlled through mechanical clutch system.
Un-wound filter paper passes through a series of Hard-Chrome Plated Rollers (driven through chain-sprocket synchronized drive) before passing through Chemical Coating Tank (M.O.C-Stainless Steel).
The filter paper gets coated when it passes through a series of Tension Rollers (rubberized) and kisses over a Phenol Resin Coating Roller (dipped in the coating tank).
The motion of the Coating Roller is controlled with AC motor and Variable Frequency Drive.
Resin & PVA Methanol Mixing Drums ( 02 numbers of 200 litres capacity) are provided along with gear motor drive.



Station-2)Drum type Paper Drying Station
Coated paper gets dried-up after it passes through a series of heated drums.
Diameter of Drier Drum = 500mm
Width of Paper Drying Drum = 1000 / 1250 / 1600mm / Custom Made
Drums heated through electrical heater coils.
System provided with Digital Temperature Controller and Auto-Cut-Off system.
The external surfaces of the drums are hard chrome plated.


Station-3)Paper Corrugation and Marking Station
The dried paper gets corrugated after it passes through a set of Corrugation Rollers.
Diameter of Corrugation Rollers = 250mm
Width of the Paper Corrugating Rollers = 1000 / 1250 / 1600mm / Custom Made.
Corrugated Paper gets marked on the coated side through Line Marking Reels dipped in an Ink Tray (M.O.C.-Stainless Steel).
Motion of the Marking Reels controlled through mechanical clutch system.


Station-4)Paper (coated & corrugated) Re-winding Station
Coated paper is re-winded on a single shaft Re-winding Station.
Width of Re-winding Unit = 1000 / 1250 / 1600mm / Custom Made.
Motion of the Re-winding shaft is controlled through mechanical clutch system.
Motion is provide with AC motor with Variable Frequency synchronized drive.

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Wing Nut

These are casted nuts with two wings made for easy gripping and tightening over the Cartridge Hangers to hold the filters in the Filter Housing.


They are made of graded cast iron; duly machined and Zinc plated and are supplied with Neoprene Gaskets for effective sealing.


Dauji engineeringcan supply duly machined, zinc plated or power coating items in cast aluminium, cast iron and cast stainless steels in any size and profile. The size and profile of these casting are suited for specific filter or general requirements.

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Adhesive Dispensing Machine

The dispensing is regulated electro pneumatically and the dispensing quantity is regulated through a timer valve which can be set in between 5 to 130 seconds.


For filling of larger size filter caps requiring larger dispensing quantity, rotary table with double dispensing nozzle can be provided.


The other salient features of this machine are:



  • Regulated air pressure can be maintained of up to 150 PSI.



  • Can be provided with dispensing drum capacity from 80 to 120 ltrs.



  • Slow moving Geared Motor with Mixing Attachment maintains the requisite adhesive viscosity.



  • Provided with regulating arrangements like Pressure Gauge, Pressure Regulator, Safety Valve, FRL unit with Air Release Valve etc.



  • Shower Head can be provided with mechanical adjustment to control the flow of adhesive.



  • Standard table size of 600mm x 1200mm can be provided. However table size can vary depending upon customer requirement.

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Seals And Gasket

The seals and gaskets which are precision molded can be supplied in different grades of rubber and can be provided in various configurations, profiles and cross-sections.


The seals and gaskets can be supplied in FDA compliant grade also on requirement.


These seals/gaskets which can be pasted either on the top or the bottom surface of the End-caps or on the circumference of specially molded plastic end-caps of filters are very effective in sealing against leakage or mixing of dusty air with the clean/filtered air in the Filter/Bag Housing or Dust collector.



Supply Range :

Grades: Natural Rubber, Sponge Rubber, EPDM, Neoprene, Nitrile, Silicon


Hardness: 20 Shore A (minimum) to 90 Shore A (maximum); (Standard 70 5 Shore A)


Service Temperature: (-) 20C to (+) 120C (EPDM, Neoprene, Nitrile)


(-) 20C to (+) 230C (FDA compliant Silicone)


Profile Shape: Triangular, Square, Rectangular, Round, Oval, Flat


(Any special profile/configuration on request)


Profile Size: Up to 15 (Round), 15 x 15(Triangular, Square and Rectangular)


Seal Shape: Extruded continuous length


Molded Ring Shape (up to 400mm)


Molded Square/Rectangular Shape (up to 1000mm)


(Sizes beyond these on requests)

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Cartridge End Caps

  • Min. Order (MOQ) 100 Piece(s)
  • Type End Caps
  • Material Aluminium, Brass, HDPE, Plastic, PVC, CRCA, SS, GI
  • Shape Round, Recentagular
  • Thickness 0.5- 2mm
  • Certification ISI Certified
  • Application Industrial Use
  • Condition New
  • Finishing Non Poilshed, Polished
  • Feature Dimensional Accuracy, Fine Finish, Good Quality
  • Head Code 73

We are offering cartridge end caps. Dauji provides a comprehensive range of filter cartridge end caps to suit a very wide variety of filters of standard manufacturers. Unusual profiles and non- standard sizes are our speciality. filters are available in metal & plastic- pressed, cast, machined, welded or moulded.

Additional Information:

Payment Terms : L/C, T/T,

Packaging Details : Per Client requirements

Delivery Time : 2 weeks

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Aluminium End Cap

  • Material Aluminium
  • Color Black
  • Brand Name Dauji
  • Shape Round
  • Temperature 150 Deg C
  • Size 6-7 Inch
  • Usage/Application Industrial
  • Surface Treatment Powder Coated
  • Number of Leg 4
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Silicon Rubber Seal

  • Brand Name Dauji
  • Material Silicon
  • Shape Round
  • Packaging Type Carton, Packet
  • Temperature -20 to + 40 deg C
  • Hardness 20 to 90 Shore
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Filter Compnent & Equipment

  • Min. Order (MOQ) 100 Piece(s)
  • Type Filter Manufacturing Equipment
  • Certification ISO 9001:2008
  • Condition New

Dauji is the single source for supply of a wide range of product for filter manufacturing & components.

Additional Information:

Payment Terms :

Packaging Details : Per Customer specifications

Delivery Time : 2 weeks

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Electrical Conveyorised Oven

Electrical conveyorised oven is used where there is continuous requirement of drying/baking/heating or curing of filter materials. It can be used just after the Pleating Machine to bake the pleated media. It can also be used as a final curing oven for baking or gelling of adhesive with the filter media and the end caps.This oven is equipped with conveyor belt which transports the material through different heating zones


The oven can be supplied in different sizes based on width and length of the oven.


The sizes available are:


Width = 610mm / 1000mm / 1250mm


Length = 6000mm / 7500mm / 9000mm


However, sizes other than those mentioned above can also be supplied based upon customer requirement/request.


The other salient features of this oven are:



  • Each oven is provided with different heating zone with gradual rise in temperature/heat load.

  • The walls of the ovens are thermally insulated.

  • The walls are lined internally and externally with thick gauge M.S. sheet over the insulation.

  • Provided with 06(min.) to 18(max.) air circulation fans depending upon the size of the oven.

  • Provided with Digital Temperature display and controller for each separate zone.

  • Provided with individual control panel and automatic preset cut-off system for each heating zone.

  • The conveyor speed can be varied with VFD driven geared motor system attached to link chain.

  • Zone wise heating temperature can be controlled within the range of 50C to 250C depending upon the size of the oven.

  • Provided with hoods at the inlet and outlet of the oven for discharge of fumes.

  • Utilizes heat load from 26KW to 96KW depending upon size of the oven.

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Filter Flanges

  • Type Filter Accessories
  • Material Aluminium, Brass, G.I, Metal, Mild Steel, Plastic, Stainless Steel, Food Grade- Abs
  • Shape Rectangular, Round, Square, conocal
  • Thickness 0-50cm
  • Application Air Filtration, Gas Filtration, Oil Filtration, Water Filtration
  • Condition New, Fresh
  • Dimension Customs
  • After-Sales Service Provided Yes

We provide a comprehensive range of filter end-caps to suit a very wide variety of standard and non-standard filters. End Caps with unusual profile are our specialty, which can be used in different application areas. For custom End-caps, we specialize in quickly developing Dies/Press Tools and Moulds for End Caps of any unusual and non-standard profiles specific to any particular customer requirement /application areas

Additional Information:

Packaging Details : Per Customer requirements

Delivery Time : 2 weeks

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Pleated Paper Pack End Jointing Machine

This machine seals the edges of a pleat pack thermo-electro-pneumatically after PVC based adhesive is applied over the edge. After the adhesive is applied in between the two edges of the pleat pack, it is put in between the two pressing bars both of which are heated through electrical heaters. The edges get sealed when the top bar presses against it through pneumatic force.


The salient features of this machine are:



  • Movement of the top Pressing Bar is through Pneumatic Cylinders

  • Bottom Pressing Bar is fixed and insulated to prevent heat loss.

  • Pneumatic system is complete with all the regulating arrangements like Pressure Regulator, Pressure Gauge, Safety Valve, FRL unit with Air Release Valve etc.

  • Provided with Pre-set Timer and Buzzer to indicate the completion of heating/pressing cycle.

  • Provided with auto cut-off system to stop the machine on reaching the heating/pressing cycle.

  • Provided with Digital Temperature Display and Controller.

  • Top Plate can be retracted manually with pneumatically operated Foot Valve or it can be retracted automatically on completion of heating cycle through PLC based control system

  • Standard table size is 650mm (L) x 600mm (W) x 800mm (H). However this size can vary based on customer requirement.

  • Utilizes heat load of up to 3 KW.

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Metal Free Fuel Filter Element

This filter forms a integral combination of hous


ing and filter element both and provides a superior protection to the diesel engine from any dirt, dust, rust, water and other contaminants that lead to the wear and tear of the fuel system and the engine.


It reliably filters out particles down to 4-5 microns and attain 100% water separation with diesel fuel.


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Cross Cutting Machine

This unit can be used after the Slitting Station or after the Pleating Machines for cutting the slitted coils or pleated media cross wise. The cutting action is effected through a circular cutter moving cross-wise in an accurately machined Guide System and Lead Screw by electro-mechanical means.


The cutting action starts once the set length (being fed in PLC based control panel) is sensed through Sensor-Encoder system.

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Pleat Locking Band

We can supply molded bands in plastic (ABS; Polypropylene; Nylon; HDPE , Cotton + Polyster and NOMEX in different standard widths.


These bands can be used in holding or separating each pleats of the pleated cartridge of the filters from outside.

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Moulded Part

Molded parts of synthetic plastic material are being increasingly used in filter industry due to environmental need and we can offer these items in accordance with customers needs.

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CONVEYORIZED ASSEMBLY LINE

The Assembly Line is primarily meant for assembly of GT Filters or any other filters in a multi-station operation on a conveyorized system.


Standard size of the assembly table = 6000mm (L) x 2500mm (B) x 600mm (H).
Assembly table as per customer requirement can also be provided.
Multi-station line with control system to move each station on a conveyorized system.
Motion to the system is provided through AC geared motor with Variable Frequency Drive
The speed of the station can be controlled from 0.5 to 3.0 meter/minute.

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Cold Rolled Cone

Made from 1.0/1.5mm thick CRCA (Cold Rolled Cold Annealed) sheet.


It can be supplied in zinc plated; power coated or in poly-urethane painted finish.


Used near the Pulse Jet air Cleaning Chamber of the Gas Turbine Filter House and Dust Collector.


Cones disperse the pulse air more evenly through out the length of the filter cartridge for more effective use of the pulse energy.


The cone distributes the pulse air more evenly through- out the filter for more effective cleaning and lower pressure drop.


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Rubber Component

Dauji offers a wide range of rubber components made in neoprene, silicon, EPDM and other synthetic materials.


These moulded rubber components like Washers, O- Rings, Gaskets etc. are used in the filter industry for various applications in air and gas turbines, hydraulic, fuel, lube and oil filters.

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Circular Slitter

In this unit the coil can be slit into various width through a number of circular cutters operated pneumatically.
The feeding and cutting motion of the cutters can be controlled through a PLC drive.

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Filter Cage

Dauji engineering is a single source for supply of a wide range of filter cages and meshes, perforated sheets, perforated paper netting and other components for filter manufacturing. our range of supply is suitable for small lubrications filters to specialized components for the largest size filters for gas turbine.

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String Wound Polypropylene Yarn Cartridge

String Wound Polypropylene Yarn Cartridge Filters are an economical solution to filter out suspended matter, sand, silt, grit and rust from water. Other than water purification, they are also used in beverage, chemical and pharmaceutical industries.



These filters are made of Polypropylene strings that are wound tightly over a Polypropylene core which strengthens the cartridge.


String Wound Cartridges can filter out particles from as low as 1 micron to 200 micron and are generally available in standard lengths of 10, 20, 30 and 40 .



Standard diameters available are in 62mm (Slim) and 105mm (Jumbo). However length and diameters other than standard can also be provided on requirement.

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Perforation & Expander Machine

A range of forming machines is available for making perfo & expanded sheets ( in paper and metal). In addition, to our standard profile range, we can customized for any special type of cage profile required.

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Wire Mesh

Wire mesh and weld mesh in all sizes and profiles are available - in rolls, sheets and rolled cages.

available in steel, brass, gi and all grade of stainless steel, our customers can specify the optimum design for their application.
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Contact Us

  • Kulvant Singh (Dauji Engineering Limited)
  • Plot no. 25-36, Sector- 59, Faridabad, Sector 59, Haryana - 121004, India
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  • Call 08068051377 Ext. 246