Scutching Refers to the Process of Cleaning Cotton of Its Seeds and Other Impurities

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The earliest evidence of silk production in China was found at the sites ofYangshao culture in Xia, Shanxi, where a cocoon of bombyx mori, the domesticated silkworm, cut in half by a sharp knife is dated to between 5000 and 3000 BC.

Fragments of primitive looms are also seen from the sites ofHemudu culture in Yuyao, Zhejiang, dated to about 4000 BC.

Scraps of silk were found in a Liangzhu culture site at Qianshanyang in Huzhou, Zhejiang, dating back to 2700 BC.

Other fragments have been recovered from royal tombs in the Shang Dynasty (c. 1600 – c. 1046 BC).

The first scutching embroidery digitizing machine was invented in 1797, but did not come into further mainstream use until after 1808 or 1809, when it was introduced and used in Manchester, England.

By 1816, it had become generally adopted.

The scutching digitizing machine worked by passing the cotton through a pair of rollers, and then striking it with iron or steel bars called beater bars or beaters.

The beaters, which turn very quickly, strike the cotton hard and knock the seeds out.

This process is done over a series of parallel bars so as to allow the seeds to fall through. At the same time, air is blown across the bars, which carries the cotton into a cotton chamber.

Natural light is the most common source of ultraviolet light, and as such, care should be taken to avoid exposure to direct sunlight at all costs, and indirect sunlight whenever possible.

This may mean storing or displaying textiles in an area without windows, or with blackout curtains, which can be pulled whenever the room is not in use.

If a room relies on natural light, UV screens or coatings can be applied to the windows to block harmful rays while still allowing light to pass through.

These filters should be checked periodically, however, as they have a limited lifespan and may need to be replaced every few years.