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Imperfirm

Data Sheet 

Imperfirm 

Thermoplastic firm to hard Toe puff material on Polyester non-woven base with excellent bounce back effect and outstanding wearing result. 

One side bonding, coated with Polyesteradhesive. 

This adhesive results a absolutely faultless bonding if application of greasy leather or syntetic materials. 

Types available Thickness

Imperfirm V 15 P 0.60 - 0.70 mm 

Imperfirm V 25 P  0.70 - 0.80 mm 

Imperfirm V 35 P  0.80 - 0.90 mm 

Imperfirm V 45 P  0.95 - 1.05 mm 

Imperfirm V 55 P  1.10 - 1.20 mm 

Imperfirm V 65 P  1.20 - 1.30 mm 

Imperfirm V 75 P  1.30 - 1.40 mm 

Method for use Required interface temperature for bonding: approx.100 -110°C 

  Ironing temperature: approx. 120 -150°C 

Time: approx. 4 -10 sec. 

(Temperature can be reduced and Time can be shorten by preactivating the material) 

Clamp heater reactivation before lasting

Temperature: approx. 130 -150°C 

Time: approx. 5 -12 sec. 

Advice All data may vary according to substance of material and type of 

upper. 

Delivery Sheets, 1.00 x 1.50 m 

Cutting Diagonally 

Skiving We recommend a rippled steel bottom roller and i.e. Fortuna skiving foot 361 HP 

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