What is "Ultraviolet Protection Factor UPF" - Definition & Explanation
The UPF rating indicates how effective a fabric is at blocking out solar ultraviolet radiation from reaching the skin. UPF ratings range from 15 to 50 with higher ratings indicating more effective blocking and therefore better protection for the wearer of a garment. Fabrics that test higher than UPF 50 are rated as UPF50+. UPF testing involves exposing a fabric to ultraviolet radiation (UVR) and measuring how much is tranmitted through the sample. Different wave-lengths of radiation in the UVR spectrum have different effects on human skin and this is taken into consideration when calculating the UPF rating. Factors that contribute to the UPF rating of a fabric are: *Composition of the yarns (cotton, polyester, etc) *Tightness of the weave or the knit (tighter improves the rating) *Color (darket colors are generally better) *Stretch (more stretch lowers the rating) *Moisture (many fabrics have lower ratings when wet) *Condition (worn and faded garments may have reduced ratings) *Finishing (some fabrics are treated with UV absorbing chemicals)
Some more terms: ParkaThis a winter sports gear which is pull-on jacket having attached hood which can also be made in desired style and...
Half Damask
A damask fabric made with silk warp and cotton or wool...
Speed Shorts
A tight fitting garment, designed to reduce friction. Used to describe the type of shorts worn by runners or a kind of trunks or briefs worn by racing swimmers. Also used to describe a form of brief...
High/low
Pile fabrics that have variation in pile...
Creepage
A relaxation shrinkage that occurs under normal conditions of....
Companies for Ultraviolet Protection Factor UPF: If you manufacture, distribute or otherwise deal in
Ultraviolet Protection Factor UPF.