Seal press tester No.2375

When evaluating workability, including embossing fitness, of paper for crepe paper, towel paper, etc., conventional press-based equipment has drawbacks in that pressure or temperature cannot be set meticulously. With this tester, embossing fitness of specimens can be evaluated against the seal strength needed for paper towel's wrap-around seal section, for example, or for coffee filter's sealed section on the edges. Also, this tester enables to identify the required strength by applying different pressure, temperature and humidity settings and checking the behavior of the sealed sections. To serve the above purpose, the tester incorporates a pressurizing bar with a set of concave and convex-shaped teeth members and a large-sized air cylinder to press the bar down on the specimen. It can operate with a pressure up to 6300 kg and a heating temperature up to 150⁰C

Specimen	standard crepe paper 55 to 65 g/m²
Clamping area	5 mm wide, 25 mm long
Total clamping pressure	6300 kgf , pneumatic, steplessly variable
Service air pressure	0.8 to 0.9 MPa in maximum pressurization
Tooth geometry	pitch 1.85 mm, inclination 10⁰, tooth geometry for non-standard specimens will be determined on the basis of experiments
Interval between upper and lower teeth	max. 5 mm
Clamping time	set by timer 0.5 to 100 h (selectable as desired)
Heating	cartridge heater with tooth plate inserted, upper and lower heater 250 W each
Temperature	max. 150⁰C
Temperature control	PID and manual regulator
Power source	100/110 VAC 50/60 Hz 7 A
Air source	0.7 MPa
Outer dimensions	810x565x840 mm
Instrument weight	205 kg