Introduction to the materials and functions of each layer of thermal insulation quilts in vegetable greenhouses1

Non-woven fabrics for vegetable greenhouse insulation quilts are mainly made of materials used in greenhouse insulation quilts. Most of them are made of selected polypropylene resins as raw materials. The weight is only about 0.9. Compared with cotton, the weight is It is as low as about three-fifths, and the surface feels fluffy. The reason for this is that it is made by hot-melt bonding technology, so the finished product has a moderate softness and a strong sense of comfort. In addition, the raw material of non-woven fabric for vegetable greenhouse insulation quilt is non-absorbent and has a relatively low water content. The 100% fiber makes it porous and breathable, which can ensure the dryness of the cloth at all times, and it is also convenient for cleaning. , is a material in the field of greenhouses. The non-woven fabric for vegetable greenhouse insulation cotton quilt does not contain any chemical components, the performance is relatively stable and has no peculiar smell, and it will not cause irritation to the skin, so it can be used with confidence. With antibacterial, anti-corrosion and other characteristics, it has a very broad development prospect in the current market, and the effect is very obvious. Insulation is used as a greenhouse“cotton coat”, While raising the temperature of the greenhouse, it also contributes an important force to enrich people's dining table in winter. Vegetable greenhouse insulation cotton quilt production method First, the prepared felt is flattened, and the fibers are acupuncture in the middle of the greenhouse insulation blanket, filled with still air, and covered with a single or double-layer straw curtain that can be rolled. The degree of polishing is in line with the principle of heat preservation. The inert gas in the middle is made of soft and can be pasted on the uneven plastic sheet, and the air is sewed by a special machine. In this way, the sealing performance is better, which can ensure the indoor temperature of the greenhouse insulation quilt, and the greenhouse warming agent directly affects the economic benefits of vegetable growers. Using the stitching method to make the thermal insulation quilt heavier than the composite greenhouse, it is specially used for the solar greenhouse to continue the upper layer of thick woolen velvet. The functions of each layer of the vegetable greenhouse insulation quilt are introduced: layer, reflective waterproof layer; using the principle of thermos, the closed-cell foam material with ultra-low thermal conductivity and the reflective film are compositely formed, which is airtight, non-absorbent, and tear-resistant . The temperature difference between inside and outside increases exponentially. Its smooth surface is convenient for rain and snow to run off, effectively preventing the mutual penetration of the thermal insulation quilt during winter rain and snow and freezing, and it is not easy to roll up. Great for clearing snow and ice; at the same time effectively blocking heat loss. Layer, sandwich cotton; store the heat lost from the bottom layer and the heat reflected from the upper layer, and maintain the temperature, effectively prevent the insulation from being frozen, and facilitate the rolling and unwinding of the insulation quilt in vegetable greenhouses all day long; at the same time, use its relative specific gravity It greatly increases the overall weight of the thermal insulation quilt and increases its wind resistance. The third layer, closed-cell foamed pearl cotton; because of its very low thermal conductivity and closed-cell airtightness, it can effectively prevent the loss of heat through air circulation and heat conduction, and at the same time, it can well block the upward flow of moisture caused by the bottom layer soaking. Layer penetration keeps the upper temperature storage layer dry, laying a good foundation for temperature storage and insulation.