Wuhan Handern Plastic Laminate
DATE：2020/9/3 8:51:37 / READ： / SOURCE：This station
Wuhan Handern Plastic Laminate
Plastic laminate is the name for the first commercialization in the 10 years between 1910 and 1920. They are composed of cellulose fibers mixed with brittle binders (such as phenolic resin). Resin is used to bond fibers together and play a waterproof role. Fibers give the resin fiber mixture toughness and flexibility. www.handern.com Non-woven equipment
Plastic laminate is an improvement on the other two old products that have been used, namely paper shell and steel paper. Paper shells are cellulose fibers with sizing or starch (and often various fillers). It was popular in the middle of the 17th century. It was introduced from Asia and began to appear in Europe in the form of decorative lacquer boxes, plates and other artworks. The paper shell gives a lightweight structure, and has surprisingly good tensile strength, toughness and rigidity. It soon discovered that it could be made into masks, doll heads, heels, picture frames and tubes. Patent documents also suggest the manufacture of large paper shell substructures, such as screen partitions, packaging boxes, and possibly car doors and dashboards. www.handern.com Non-woven equipment
Steel paper is made by dipping cotton paper in a concentrated cold zinc chloride solution. Impregnation makes the fibers swell strongly, and the outer layer is gelatinized, then the swelling fibers are pressed into the required shape, and the zinc chloride is leached out. After it dries, the surface of the gel fiber will form a comprehensive consolidation between the fiber and the fiber, which makes its material performance similar to that of a paper shell. Leo Baekeland was awarded the use of fiber-phenolic resin composite to make laminates in 1912 In the United States patent, the product made of thermosetting phenolic resin is more waterproof than paper shell or steel paper, and the fiber gives the resin the winding and toughness. www.handern.com Non-woven equipment
This discovery led people to impregnate saturated paper or paper webs with novolac, and then dry them to remove most of the solvent. Several sheets of resin-impregnated flat paper are stacked and heated and pressurized in a hydraulic press. Hot pressing causes the phenol resin to undergo condensation (polymerization), and the loose paper stack is processed into an integral laminate. The thickness of the laminate can be adjusted by changing the number and basis weight of the paper stack. Changes in resin content and resin composition will change the physical properties of laminates. The rapid growth of the automotive and electrical industries provides ready market potential for all three products, including gears, monoliths and electrical insulation materials. In most cases, phenol laminates can achieve the required performance at a lower price, and they have therefore completely driven other products out of the market. www.handern.com Non-woven equipment
Because the brown-black color of the phenolic laminate can only be used in occasions where aesthetic requirements are not important, an attempt was made to dye the phenolic laminate, but the effect was not great, until after the Second World War, the melamine-formation resin was obtained. , The problem was solved. Later, the laminate composed of melamine: methyl resin impregnated paper and phenol resin impregnated Zhi layer became the standard decorative laminate. After the Second World War, the decorative profile laminate (or decorative (Material panels) development is very slow. They have now become the main plastic laminate products. www.handern.com Non-woven equipment
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