One of the most popular types of lifting equipment are the usual lines of different species and different capacities. To date, production lines must be carried out in strict accordance with GOST, all products must be properly certified – because of so many seemingly insignificant details, and dependent quality of the hoisting works, and safe operation of the complex equipment. Slings are satisfied their steel and textile ropes. Textiles are used where special importance is the ease and flexibility of the product, they provide full safety of all the treasure to move is used. These products are unaffected by deformation, unlike steel, which shall be cleaned in areas of frequent bends.
Textile is much more resistant to aggressive media, textile slings themselves absolutely safe for humans, they do not drown, if you drop them in water and can always be at hand thanks to its compactness. However, there are situations where preferred products made from steel wire rope, slings must therefore choose only depending on the specific jobs and the environment in which they are used. Slings mats come in two forms: kruglopryadnye and tape. Belt slings made from the tape in two or crosslinking a single layer. The latter depends on the severity designed to lift cargo.
Kruglopryadnye lines represent a ring containing a core and a protective sleeve. Core consists of a polymeric material. The sleeve also eliminates the occurrence of the effect created when the friction of the core fibers during high-gravity lift luggage – it is a relatively new type of lifting devices, used in the rigging.
Creation of technological processes of plastic materials from synthetic polymers represents one of the greatest achievements of modern industry. Films have a significant place in the overall balance production of polymeric materials and their production is growing every year, surpassing the rate of development of other products. Most species are large-films based on polyolefins (2 / s total production), primarily polyethylene, and PVC and its derivatives, polyethylene, cellophane and cellulose acetate. Getting the film coatings is a key element in the process of creating various types of artificial leather. Therefore, the total consideration of specific processes in the industry of artificial leather is advisable to start with an analysis of technological schemes for forming polymeric film materials. Light industry produces multiple film materials, mainly based on two polymers – PHH and PE using to modify the properties of the films of compositions based on these polymers and thermoplastic elastomers, acrylonitrile rubbers, polyisobutylene, etc. In small quantities, also produces films based on mixed polyamides and polyethylene terephthalate. The largest share of the light industry account for elastic and rigid PVC film, the materials that get into a monolithic, porous, porous monolithic and perforated design. In some cases, in addition to conventional high-strength film received, which reinforced polymer nets made of synthetic fibers. The polymer film materials are intended primarily for the manufacture of consumer goods, social amenities, etc., including leather goods-GOVERNMENTAL products (bags, suitcases of rigid film, etc.), raincoats, for decoration and making the inside of the shoe manufacturing curtain and lace products, lighting materials (lamp shades, lampshades, lamps, etc.) to create bookbinding and other materials for the printing industry for the manufacture of baby carriages, toys, interior trim for cars, airplanes, furniture, etc.