Wet Back Tester
Wet back tester also called rewet tester is designed to determine the rewet properties of nonwoven topsheets or coverstocks of hygienic and sanitary materials. A piece of coverstock is placed over a standard absorbent medium(10 piles of filter paper) which is then loaded three times according to the repeated STT method proposed in ISO 9073-13 with a specific quantity of simulated urine. After the third dose, a simulated baby weight(SBW) is placed onto the coverstock and absorbent medium to ensure even spreading of the liquid.
A pre-weighted pick up paper is then placed on the coverstock and the simulated baby weight(SBW) is again put on top. The mass of liquid absorbed by the pick up paper is called as wetback.
ISO 9073-14 Textiles-Test methods-for nonwovens-Part 14: Coverstock wetback
GB/T 24218-14 Textiles-Test methods-for nonwovens-Part 14: Coverstock wetback
- Touchscreen easy to operate.
- Position adjusted by step motor and ball screw, low noise and accurate position
- Automatic sample lifting system.
- Electronic balance communicate with system, weight sample auotomatically
|Wet time||3 min±3 sec|
|Rewet time||2 min±2 sec|
|Simulated baby weight||4000 g±20g, 10cm*10cm|
|Time to lower weight||5 sec±1 sec for 5cm|
|Electronic precision balance||Max load 60g, accuracy 0.0001g|
|Base plate||Transparent acrylic sheet, 125mm*125mm*5mm|
|Movement speed of load||5cm/(5±1)s|
|Absorbent pad||100mm*100mm, 10 piles|
|Power supply||220 V 50/60Hz|
|2053301||wet back tester|