Curtain

Curtains vary according to cleanability, ultraviolet light deterioration, oil and dust retention, noise absorption, fire resistance, and life span.

[3] From evidence found in excavation sites at Olynthus, Pompeii and Herculaneum, portieres, a curtain hung over a doorway, appear to have been used as room dividers in classic antiquity.

[4][better source needed] In Medieval England, the earliest form of window treatments were leather panels threaded onto iron rods.

During the reign of Elizabeth I, ornately decorated Italian Renaissance fabrics, including brocades, velvets, and damask, began to be imported.

[6] The sahib al-sitr was also combined with the duties of chamberlain, master of ceremonies, and bearer of the caliph's sword, and was often chosen from among mamluks from saqaliba backgrounds.

[6] Curtains are manufactured from a variety of thick fabrics, each with a differing degree of light absorption and heat insulating qualities.

Various architectural structures around the curtain can minimize these air drafts, but usually they are just used for decoration and make rooms feel more cozy.

Uncoated fabrics provide a reasonable level of heat insulation due to their tight weaves, but are too thin to completely absorb strong light.

To create a coated fabric, a liquefied rubber polymer is applied in a single coat to an uncoated fabric and subsequently fused dry by means of a heated roller, in much the same way that a laser printer applies toner to a sheet of paper before fusing it dry.