Kneel for the history of curtain development, and use these in a design competition.

When the windows in primitive cave and semi-cave era started to be used, they were only used to cut or leave very rough holes in the walls and ceilings or skylight-like openings in Indian conical tents, and their basic use was limited to ventilation. These holes and openings were often covered with woven cloth of animal skins or grass. China's ancient windows in the Han Dynasty were covered with enough paper, and the window holes were very small and dense: first, to guard against theft; second, the window holes were too big, and enough paper was easily blown by the wind. After the appearance of cloth art in Song Dynasty, people used it as window decoration, because it is rich in patterns and light, which shows a curtain with a wide variety of customs. In 1841, John Hampson, an American, invented modern shutters and obtained a patent for the invention. Shutters are the ancestor of simple curtains (functional finished curtains). In 1946, Henry Sonabe cooperated with Joe Hunt to set up a joint venture company, and developed new technologies and equipment applied to the continuous casting and processing technology of aluminum alloy, thus producing light aluminum alloy venetian blinds sheets. The indoor aluminum alloy venetian blinds curtain is made of unique AA611 high elastic Al-Mg-Si alloy, which has good straightness and elasticity, is not easy to bend and deform, and is durable; The surface is made of enamel paint, which is painted three times and baked three times. The coating has high adhesion and corrosion resistance, and the color is uniform, bright and lasting as new. Provide numerous customization options in form, curtain width, color and control. After the appearance of aluminum shutter, it was quickly popularized because of its obvious advantages over other curtains. In 1985, Hunter's fashion window curtain launched Lydia? ? Organ curtain, unique honeycomb design makes this curtain soft, energy-saving and durable. The hollow design can effectively insulate heat in summer and keep the room warm in winter. In 1991, Siloya? ? The soft gauze curtain is the first brand-new design with decorative and light-shielding functions, and the double-layer light-shielding design effectively regulates all kinds of light. The design of the built-in top groove makes the curtain completely hidden in the top groove when it is completely folded. Yingya in 1994? ? Fashion roman blinds came out, and the high-precision technology made the curtains cut neatly inside and outside. Soft texture and modern materials and colors provide curtains with three different folding sizes and light control options. Luo Meiya in 1996? ? 3 silk soft curtain and dry electric remote control came out. Romeya? ? The unique soft tulle material of 3-silk drapery and simple electric remote control provide perfect light control and ideal privacy protection. Facette in 24? ? 3 and Alustra? ? 3 Collection appeared in 24. Facette? ? 3. The warm fabric curtain with strong sense of design and simple design style are perfectly integrated. Alustra? ? 3' s style design and fine decoration can be realized with the help of various dealers. Scarlett in 26? 6? The appearance of flexible open screen curtain provides window decoration and shading scheme for windows of different sizes, Scarlett? 6? The flexible open screen curtain can also be used as a partition to divide different spaces. During the same period, Duette? ? 3 Architella? ? 3 Honeycomb Shades is introduced, a new generation of organ curtain has the most advanced technology patent, and the double honeycomb structure has reached the highest level in energy saving. In 28, Hunter introduced its patented product Nano Roller Blinds, which is mainly used in oblique windows, and can be embedded between window frames close to the glass.