Rotational lining, HDPE / PP Roto Lining, HALAR / PVDF Roto Lining, ETFE / PFA Roto Lining India

"First Company to Introduce Rotolining Technology in India"

"Pioneer in Fluoropolymer Coating Since 1988"

Roto Lining

Roto Lining Of HDPE / PP / PVDF / HALAR / ETFE / PFA

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It is a computer controlled lining technology using rotational movement of equipment along with sintering process. This process creates seamless lining with virtually uniform lining thickness from 500 microns to 6mm Roto lining of HDPE, PP, PVDF, HALAR , ETFE , FEP, PFA is available in natural, FDA or Antistatic Conductive fnish.

Advantages of Roto Lining

  1. Better Chemical Resistance as natural Polymer is used and is heated one time, not like repeated heating in Coating so better properties of polymer
  2. Better bonding of lining to equipment because of centrifugal action of rotating movement & better life as direct bonding to equipment without adhesive.
  3. Any thickness of lining is possible from 500 microns to 6mm in single heating.
  4. FAST Delivery as quick completion of lining.
  5. Mono block type tanks & Receivers without main body ange can be lined.
  6. Seamless construction without any weld joints.
  7. Suitable for full vacuum.
  8. Suitable for heat transfer application.
  9. Antistatic , conductive , FDA Lining available.
  10. Minor repair / touch up possible at site.

Roto Lining Technique

  1. Preparation of the object to be lined

  2. Inspection of the parts to be lined

    The parts to be processed are checked before being lined according to the construction guidelines DIN EN 14879-1. The radiuses have to be properly rounded off and welding seams have to be cleanly ground. No welding beads are allowed to remain.

  3. Thermal degreasing

    Before the lining process, greasy or oily residues have to be removed, as these can influence the adhesion of the lining onto the carrier material.

  4. Preparation of the object and roughing up the surface

    In order to achieve adhesion, the parts are first sandblasted with highly purified aluminium oxide.

  5. Rotational sinter lining

    The components are fixed into a clamping device and filled with the appropriate material. The lining temperature and rotational speed are individually set.

  6. Finishing

    Mechanical processing of the sealed surface.

  7. Inspection and quality control

    The components are inspected visually for appearance, layer thickness, pore impermeability and, if necessary, electrical conductivity, and an inspection certificate 3.1 according to DIN EN 10204 is issued. All test procedures are documented.

  8. Packaging and shipment

COMPARED WITH COATING

  • Thicker Lining Possible Upto 6 mm
  • Uniform Lining Thickness
  • Better Chemical resistance as polymer heated only once above its melting point.
  • Economical as less wastage of material
  • Longer pipes can be lined from inside
  • No over spray on outside surface
  • Less Delivery Time

COMPARED WITH SHEET LINING

  • No welding line / Seamless surface
  • Better Bonding with metal without air gap
  • Better operating Temperature up to 200 C
  • Heat transfer is possible
  • Suitable for full vacuum
  • Better purity of product as no adhesive is used
  • Higher operating pressure for equipment
  • Available Antistatic Conductive Lining with
  • Resistance of 10 e 4 to 10 e 8 OHMS
  • Less Delivery Time

Applications of Lining

1. Lined Centrifuges Top discharge / Lifting Bag / Bottom Discharge / Peeler
2. Lined Storage Tanks Vertical / Horizontal / ML Tank / Dosing Tank / Jacketed Receiver
3. Lined Filters ANFD / Nutsche Filter / Basket Filter / Cartridge Filter / Bag Filter
4. Lined Dryers VTD / FD / RCVD / ATFD
5.Lined Reactors For HF / High Alkaline / Abrasive application
6.Lined Mixers Nauta / Ribbon Blender / Polygonal Blender / Agitator / Static Mixer
7.Lined Columns Distillation / Mist Elliminator / Scrubber / Absorber
8.Lined GLR Spares Agitator / Top Dish / Bottom Shell / Manhole Cover / Protection Ring / Flush bottom Valve / Thermowell / NRV
9.Lined Heat Exchangers Shell & Tube / U Tube / Double Jacketed / Coil / Plate Type
10.Lined Valves Diaphragm / Ball / Butter Fly
11. Lined Pipes & Fittings Standard / Jacketed Pipe
12.Lined Pumps Centrifugal / Diaphragm / Metering / Magnetic
13.Lined Blowers Impeller / Casing

COMPARISON OF PROPERTIES OF POLYMERS

The important properties to be considered of lining are as follow

MaterialSpecificGravityMeltingPointCMax working
temprature
C
HardnessShoreChemicalResistanceAbrasionResistanceRawMaterialCost
PFA2.15305200D-64ExcellentpoorExpensive
FEP2.15265180D-55ExcellentpoorExpensive
ETFE1.74245120D-63-72Excellent-1ExcellentModerate
ECTFE(Halar)1.68221100D-75Excellent-1ExcellentModerate
PVDF1.7716580D-75-80Excellent-2ExcellentModerate
PP0.94215580D-58Good 3SupremeLow Cost
HDPE0.9610560D-44Good 4GoodLowest Cost
  1. Attacked by strong oxidizing agents and hot amines (For ETFE & HALAR)
  2. Resistant to acids and bases ; dissolved by polar organics (For PVDF)
  3. Resistant to acids and bases ; attacked by strong oxidizing agents (For PP)
  4. Resistant to dilute acids and bases; attacked by strong oxidizing agents (For HDPE)
  • PFA - Per Fluoro Alkoxy
  • PVDF - Poly Vinylidene Fluoride
  • FEP - Fluorinated Ethylene Propylene
  • PP - Polypropylene
  • ETFE - Ethylene Tetra Fluoro Ethylene
  • HDPE - High Density Polythylene
  • ECTFE - Ethylene Chloro Trifluoro Ethylene

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