Socks (cat), Socks
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Socks (cat), Socks
A sock is a piece of clothing worn on the feet and often covering the ankle or some part of the calf. Some types of shoes or boots are typically worn over socks. In ancient times, socks were made from leather or matted animal hair. In the late 16th century, machine-knit socks were first produced. Until the 1800s, both hand-made and machine-knit socks were manufactured, with the latter technique becoming more common in the 19th century, and continuing until the modern day. One of the roles of socks is absorbing perspiration. The foot is among the heaviest producers of sweat in the body, it can produce over of perspiration per day; socks help to absorb this sweat and draw it to areas where air can evaporate the perspiration. They also protect shoes, a more expensive, durable, and frequently reworn foot covering, from perspiration, extending their life. In cold environments, socks made from cotton or wool help warm up cold feet which in turn helps decrease the risk of getting fr ...
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Footwraps
Footwraps (also referred to as ''foot cloths'', ''rags'', ''bandages'' or ''bindings'', or by their Russian name ''portyanki'') are rectangular pieces of cloth that are worn wrapped around the Foot, feet to avoid chafing, absorb sweat and improve the foothold. Footwraps were worn with boots before socks became widely available, and remained in use by armies in Eastern Europe until the beginning of the 21st century. Description Footwraps are typically square, rectangular or less often triangular. They measure about on each side if square or about on each side if triangular. Thinner cloth may be folded to produce a square, rectangular or triangular shape after folding. Russian army footwraps were made of flannel for use in winter and of cotton for use in summer. Apart from being cheaper and simpler to make or improvise, footwraps are also quicker to dry than socks and are more resistant to wear and tear: any holes can be compensated for by re-wrapping the cloth in a different po ...
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Polypropylene
Polypropylene (PP), also known as polypropene, is a thermoplastic polymer used in a wide variety of applications. It is produced via chain-growth polymerization from the monomer Propene, propylene. Polypropylene belongs to the group of polyolefins and is Crystallization of polymers#Degree of crystallinity, partially crystalline and Chemical polarity#Nonpolar molecules, non-polar. Its properties are similar to polyethylene, but it is slightly harder and more heat-resistant. It is a white, mechanically rugged material and has a high chemical resistance. Polypropylene is the second-most widely produced Commodity plastics, commodity plastic (after polyethylene). History Phillips Petroleum chemists J. Paul Hogan and Robert Banks (chemist), Robert Banks first demonstrated the polymerization of propylene in 1951. The stereoselective polymerization to the isotactic was discovered by Giulio Natta and Karl Rehn in March 1954. This pioneering discovery led to large-scale commercial producti ...
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