WA 145/7 SD
WA 145/7 SD is a pressure sensitive recording paper with black trace, double-side coated.
WA papers are used for all applications where rapidly-changing values must be recorded continuously even under adverse conditions.
The opaque white surface layer is made transparent by being subjected to pressure exerted by a hard recording stylus made of metal, sapphire or agate. Visual unobjectionable available recording from -10°C to +40°C by a point of sphere ( r= 0.6mm ) upwards 20p of charge.
At a glance
- The coated side has excellent adhesion, is flexible, not adhering and non-fading
- No coating discoloration below 100°C
- Recordings are still available after a brief contact with water, oil, diesel oil and petrol
NameValueToleranceNormNameWeight [g/m²]Value140Tolerance±6NormISO 536NameThickness (paper) [µm]Value145Tolerance±12NormISO 534
For quality reasons WA papers should be stored originally packed. Storage & converting conditions of 20±5°C and 50±10% rel. humidity are recommended. WA papers should not be exposed to strong mechanical friction, e. g. by scratching with fingernails. The durability of WA papers in original packaging is min. 12 month.
We always recommend comprehensive testing of materials prior to regular conversion.