COATING ROLLER

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SU SPONGE

USE ABSORBENT ROLLER
  • Polyurethane of ultra minute continuation pore structure, SU SUPONGE roller has excellent water absorbility, ventilation capacity, and moisture permeability.

  • Made of special polyurethane, SU SUPONGE ROLLER excels in water resistance, heat resistance, solvent resistance and abrasion resistance.

  • SU SUPONGE can absorb water quickly by using urethane elastomer with original polymerization technology.

  • Big water-keeping ability and oil adsorption capacity up to 300% enable to have good surface condition of roller even after absorption of plentiful water.

  • It does not harden like PVA even if dried. Easy maintenance.

SU SPONGE

General Property

Diameter of pore 5~10m
Pore rate 80%
Water-keeping ability 300%
Apparent specific gravity 0.26(g/cm3)
Heat resistance 120C
Tensil strength 13.0(kg/cm3)
Elongation rate 400%
Hardness 10

Comparison with other product

  SU SUPONGE MOULTON PVA PVC
Water removal rate
Chemical resisitance
Heat resistance
Abrasion resistance
Occurrence of dust&mould

Test data

  • First, water and rolling oil are spread on aluminum foil. (3g/m2 , 10g/m2)
    Second, 3 SU SUPONGEs are passed through aluminum foil.
    Third, measure the weight of aluminum foil and calculate removal rate.

  After 1 roll passing After 2 rolls passing After 3 rolls passing
Water (3g/m2) 95% remove 97% remove 99% remove
Water (10g/m2) 92% remove 96% remove 99% remove
Rolling oil (3g/m2) 62% remove 81% remove 96% remove
Rolling oil (10g/m2) 88% remove 94% remove 97% remove

Usage example of SU SUPONGE

  • Removal of oil like rolling oil

  • Removal of liquid in copper foil production process

  • For squeeze roll after washing PS plate

  • Removal of excess water, oil, solvent in prodution line

  • Substitute or assistance of "Air Knife"

  • Homogeneous coating of liquid by using it's hydrophilicity

  • For impregnated roller for ink coating,etc.

  • Continuous coating of Silicon to slitter blade etc.

  • For transfer roller for ultra thin copper foil, aluminium foil, film,etc.

SU SUPONGE can be used as alternative to PVA.
The performance of SU SUPONGE is more excellent than PVA.

Solvent resistance

Usable solvent Methanol, Ethyl alcohol, Isopropyl alcohol, Machine oil, Castor oil, Gasoline, Linseed oil, Phenol series, Trichloroethylene, Ether, Formalin
Little change(swelling) Benzene, Toluene, Xylene, Acetone, Methyl ethyl ketone, Daiflon
Unusable solvent Dimethylformamide, Dimethyl sulfoxiamide

Chemical resistance

  1% 10%
Nitric acid
Hydrochloric acid
Sulfuric acid
Sodium carbonate
Ferric chloride
Copper chloride
Sodium hydroxide

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