American & Efird, Inc.
Thread Science
Thread Science
电动车十大排名Introduction: Choosing the Right Thread
Thread is an integral part of many items that we u daily. Certainly the various components of our apparel are joined with thread but what about the string that is attached to our tea bags? What would happen to upholstery, at belts, and head liner of an automobile if the thread were removed? What about the ams in our tents, back packs, sleeping bags, and other camping equipment? How are the components of baballs and footballs joined? Each of the products requires a thread with different physical properties to achieve optimum performance. If you consider the many us of thread, the complexity of designing a thread becomes apparent. Consideration must be given to: Sewability, loop strength, linear strength, elongation, shrinkage, abrasion resistance, colorfastness, and resistance to chemicals, heat, light, etc. Each can affect the desirability of a thread for a particular end-u. A&E threads are designed for many general and specific end-us. Selecting the proper thread for your product can be simplified if the basic factors are considered: required am 保定长城
strength; type of am; stitch type and number of stitches per inch; type of material being wn; type of wing machines and related equipment; conditions under which the product must perform; normal life of the product; and cost effectiveness. Analyzing the factors would give an indication of which physical properties are most important in the thread. Selection then becomes a matter of choosing a thread with the most desirable properties. Of cour, thorough testing is necessary to confirm that the thread chon is indeed the correct one. A&E will be glad to provide any necessary technical assistance to help you lect the best thread for your u. (See Technical Services.)
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American & Efird, Inc.
Thread Science: FIBER
蛇纹身图案大全
Fiber Science
Where Do Fibers Come From?
Fibers ud to make industrial wing threads come from two major sources: • Natural Fibers: Come from plants and animals and are spun or twisted into yarns. Cotton is the most common natural fiber ud to make thread. Other natural fibers include silk, wool, jute, ramie, hemp, and linen. Natural fibers are generally not as uniform as synthetic fibers and are affected by climatic changes. At A&E, we u cotton as a fiber source for some of our thread. We lect our cotton fibers from the best available crops, classifying them depending on the geographic location and climate, ed and type of plant, and the cotton grower's reputation. The two class of cotton fibers that we u at A&E are SAK (or Supima) cotton that comes from Arizona and CP (or Peeler) that comes from the San Juaquin Valley in California. SAK quality cotton produces stronger spun cotton threads than CP fibers. Synthetic Fibers: Are made from various chemicals or regenerated from cellulo such as wood pulp and cotton waste. We lect our synthetic fibers bad on their wability characteristics, am performance, ea of dying, colorfastness, and pricing. At A&E, the synthetic fibers that we u as a source to make thread are polyester, nylon, Kevlar® from Dupont, and Nomex® from Dupont.
•
Fibers Come in What Forms?
When we receive bales of cotton, polyester, nylon, Kevlar®, and Nomex®, the fiber contained in the bales comes in one of the following forms:紫薇花的象征意义
• Staple: Refers to natural fibers that vary in length or to synthetic fibers with filaments
that are cut to a definite length during the manufacturing process
深入浅出• Continuous Filament: Refers to synthetic fibers of an indefinite length
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American & Efird, Inc.
Thread Science: CONSTRUCTION
Thread Construction
We manufacture thread bad on the following construction methods:
Is made from cotton or polyester staple fibers that are spun into single yarns and then two or more of the yarns are plied to make a wing thread. Spun threads have fuzz on their surfacing giving them a soft hand and good lubricity characteristics. Spun threads are ud in everything from women's lingerie to heavy leather gloves. (Example products are: Anecot™, Anecot Plus™, Kevlar® from Dupont, Nomex® from Dupont, and Perma Spun™.) Is made by spinning a wrap of staple cotton or polyester around a continuous filament of polyester fibers. Afterwards, two or more of the single yarns are twisted together to form the thread. Core threads have fuzz on their surface giving them good lubricity characteristics and also a continuous filament core that contributes to high strength and durability. When wrapped with a cotton wrap, core threads have very good needle heat resistance. When wrapped with a polyester wrap, core threads have excellent chemical resistance and colorfastness. Core threads are ud in everything from fine blous to heavy coveralls and overalls. (Example products are: D-Core™ and Perma Core™.) Is made from continuous filaments of polyester or nylon that have been textured by pin, disc, or belt and then heat t to insure proper bulk retention. Textured polyester is usually manufactured with regular or mid tenacity, continuous filaments depending on the application. Textured threads are ideal for overedge, chainstitch, and coverstitch of the finished am and offers good am elasticity. Textured threads are usually less expensive when compared to other thread types. (Example products are: Best Stretch™, Wildcat™, and Wildcat Plus™.)
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American & Efird, Inc.
Thread Science: CONSTRUCTION
Is made from continuous filaments of polyester that are entangled as they pass through a high pressure air jet. This yarn is then twisted, dyed, and wound on cones with lubricant. Air entangled threads are ud in everything from aming flags to heavy denim jeans. (Example product is Magic™.)
Is made from continuous filaments of polyester or nylon that are twisted together into a cohesive bundle and then plied to make the thread. They are then dyed, stretched, and heat t to achieve the desired physical characteristics. Twisted Multifilament threads are available either soft or with an additional bond for better ply curity and abrasion resistance. They are exceptionally strong for their size and they have excellent resistance and durability. The threads are ud for aming everything from bathing suits to automobile upholstery. (Example products are: Anefil Nylon™ and Anefil Polyester™.)
Is produced from continuous filaments of nylon that have been bonded together. They have very little twist so that they look like a single cord of yarn. Becau of the way the threads are made, they appear to be flat and ribbon-like, which provides a high degree of resistance to abrasion. Monocord threads are exceptionally strong for their size so they are ud in the manufacturing of furniture, shoes, and other heavy duty applications. (Example product is Anecord™.)
Normally produced from a single nylon continuous filament rembling fishing line. Usually monofilament threads are ud becau the thread is translucent and blends in with many colors. Becau it has a tendency to be stiffer than other filament products, it is not recommended for ams that may lay adjacent to the skin. Also, becau it is a single filament, it may unravel easily if the thread is not locked in the am adequately. Monofilament threads have been ud in quilting operations on quilts and bedspreads, as well as, in blindstitch operations on drapery and apparel. (Example product is Clearlon™.)
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American & Efird, Inc.
Thread Science: CONSTRUCTION
The above types of thread constructions that involve twisting (such as spun, core, and twisted multifilament) are twisted in the following directions:
• •
"S" direction or right twist for single strand yarn (such as spun) "Z" direction or left twist for ply yarn (such as core and twisted multifilament)
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