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UHMWPE:
- ultra-high molecular weight polyethylene.
Last referenced in: Global Technical Textiles Business Update (Technical Textile Markets Issue 68)
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ULPA:
- ultra-low penetration air (filtration).
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Ultraviolet:
- see UV.
Last referenced in: Developments and innovations in the apparel sector (Global Apparel Markets Issue 3)
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Ultraviolet protection factor (UPF):
- a measure of the amount of protection against ultraviolet radiation to human skin provided by an item of clothing. UPF is similar in concept to the sun protection factor (SPF) which is used to categorise sun creams and lotions. However, SPF is more precise.
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Ultraviolet stability (geotextiles):
- the ability of a geotextile to retain strength upon exposure to ultraviolet light over a specified period.
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Unit production systems:
- an advanced apparel manufacturing system in which a single garment is progressed through a sequence of operations. Using a unit production system, a garment is automatically transported via a computer-controlled overhead hanging system, which has been ergonomically designed to reduce the amount of handling of the garment (see also progressive bundle system).
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UPF:
- ultra-violet protection factor.
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UPS:
- see unit production systems.
Last referenced in: Trade and trade policy: leading clothing suppliers to the USA (Global Apparel Markets Issue 2)
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Uptwisting:
- a system of twisting one or more yarns by withdrawing them over-end from a rotating package. Uptwisting forms the second stage in two-stage twisting.
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UV:
- ultraviolet.
Last referenced in: Developments and innovations in the apparel sector (Global Apparel Markets Issue 3)
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