PICKER
A machine that separates staple fiber and forms it into a lap so that it can be fed to a card. References for this information: Inda Edana
PHYSICAL BONDING
A method of bonding fibrous webs by physical means: mechanical and thermal treatments. References for this information: Edana
PERMEABILITY
The ability to be penetrated by liquids or gases. References for this information: Edana
PENETRATION
The flow of a liquid through pores, pinholes or holes resulting from imperfections or degradations of a fabric. In a filtration context, a measure, in percent, of particles of a…
PASCAL
A metric unit of pressure used in measuring an air filter’s performance.
PEAK FORCE
A term used in tear testing. It is the force required to break the fiber bonds of a nonwoven or other samples of textile materials. References for this information: Inda
PARTICLE COUNT
The quantity of particles in a given volume of fluid. References for this information: Inda
PARTICLE
A minute piece, part or portion of matter. It may be solid, semi-solid or liquid. References for this information: Inda
PARALLEL-LAID
A web where the fibers or filaments are laid roughly parallel to the machine direction. Parellel-laid webs exhibit higher strength and lower elongation in the MD vs. CD. See also…
PARALLEL LAYING
Forming a web in such a way that the fibers or filaments are laid in directions roughly parallel with the machine direction References for this information: Inda Edana .
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