Tip 1: Consumer properties of a product and their characteristics
Tip 1: Consumer properties of a product and their characteristics
Consumer properties of goods representtheir quality. They determine the suitability of the goods for specific human needs. Consumer properties are manifested in the process of using the product.
Functions, reliability, ergonomics
Functional properties reflect the purposegoods. These include the perfection of the main function, the universality, the perfection of the performance of auxiliary functions. The main purpose of any product is different. Quality of performance is determined by the parameters, composition, type of raw materials. Versatility is the range of conditions and possibilities of using for the intended purpose. Auxiliary functions expand the possibilities, increase the usability. Reliability properties: the ability to perform functions in certain modes and conditions without degrading performance. This includes durability, reliability, suitability for repair and maintainability. If these indicators change, talk about wear. Longevity - the ability to remain operational during the life or shelf life. Reliability is the ability to work for a while without failure. Retentivity - the ability to perform specified functions after storage and transportation. Suitability for repair - the fitness of the goods for maintenance. Ergonomic properties - ease of use. The product must correspond to the size and shape of the human body. The physiological properties of the goods must satisfy the needs of man. They affect the functioning of the body. Non-food products also have hygienic properties: maintaining normal humidity, permeability, electrificability, contamination, etc. The properties of the goods must correspond to the psychophysiological capabilities of the person, as well as his skills, thinking and perception.Aesthetic and ecological properties
Aesthetic properties - ability of the goodssatisfy the need for aesthetic pleasure. It should reflect the accepted norms of culture and ideas about aesthetics, be original. An important criterion for a number of products is the conformity to style and fashion. The product must be a complete composition, with interrelated elements. The shape and design of the product must correspond to its purpose, which indicates an aesthetic expediency. Aesthetic properties include perfection of the product. Environmental properties - the ability to influence the environment. Such influence can be carried out during production, storage, operation, utilization. This includes various indicators and estimates of probability. The environmental impact of goods can be the release of toxic substances, pollution of the planet's resources, etc.Tip 2: What is knitwear and what are its properties
Today, jersey products are verypopular - socks, baby and underwear, as well as many other items of the wardrobe are widely in demand by buyers. Knitted things favorably differ from things from other fabrics by a number of certain qualities. But what are they?
History of knitwear
Translated from French, the word "jersey"means "knit." Knitwear refers to a product or cloth, knitted from threads on knitting machines or by hand. For the first time knitting appeared in the 16th century, and since then knitwear has taken a strong position in people's lives. After the invention of machines for knitting, knitted finished products and linen for sewing them began to produce in large quantities and a wide range.Knitted fabrics are made from cotton, woolen or synthetic yarns of various thicknesses and combinations.Of knitted fabrics, different in composition,produce certain types of products. There is a homogeneous or mixed material, which is distinguished by composition, which includes one kind of raw material or several. Almost all modern knitwear is mixed - it adds synthetic fibers, which improve the consumer characteristics of knitwear. By the method of knitting, it can be double, embossed, culinary, cross-knitted or warp knitted.
Properties of knitwear
The quality of the knitted fabric is determined by itsbasic characteristics and properties - the geometric parameters of the interlacing of filaments, their linear density and surface structure. The overall quality of knitwear is also determined by the physical and mechanical properties, as well as the number of loops per unit length in different directions. The thickness of a knitted product depends directly on the surface density.Surface density is usually larger in the upper things of knitwear and less in knitted underwear.The mechanical properties of knitwear determinesa set of elasticity, elasticity, extensibility, abrasion, tensile strength, torsion and spreadability. The stretchability depends entirely on the kind of weaving of the knitwear and the structure of the loops. The most extensible kind of jersey is cross-knitted. The elasticity and elasticity of the fabric is largely influenced by the type of raw materials and weave - the higher the index, the higher the resistance of knitwear to abrasion and shape retention. The most elastic is considered a knitted fabric made of woolen yarn and textured yarns. The resistance of knitwear to abrasion is also influenced by the kind of weaving of threads and the type of fiber surface - the least resistant are the woolen and wool jersey. The most resistant to abrasion is the knitwear made of synthetic yarn.
