loudiness constitutes an important quality parameter of nonwoven fabrics. We show that Cit can be graded using a specific Laplacian pyramid decomposition which has to be modified at the boundaries. An algorithm is presented which calculates a quality measure as a weighted mean of the variances at all pyramid levels, where the weights are adapted to the human perception of cloudiness. The obtain...

This part of the study aims to investigate the role of fiber finish during processing on the needlepunching machine. Certain key response parameters like dynamic needling forces and needlepunched fabric properties are analyzed for any possible effect of finish level and its uniformity on these responses. The experiments were performed using polyester and polypropylene, two of the most commonly ...

BACKGROUND Healthcare workers' uniforms including surgical gowns are used as barriers to eliminate the risk of infection for both doctor and patient. The prevalence of human immunodeficiency virus, hepatitis B and C viruses in the patient population is very common. OBJECTIVES To develop antiviral surgical gown comprising of Polypropylene nonwoven as outer layer, Polytetrafluroethylene (PTFE) ...

When a compliant sheet of material is dragged over a curved surface of a body, the frictional forces generated can be many times greater than they would be for a planar interface. This phenomenon is known to contribute to the abrasion damage to skin often suffered by wearers of incontinence pads and bed/chairbound people susceptible to pressure sores. Experiments that attempt to quantify these ...