Polyester

Background

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Polyester is used in the manufacture of many products, including clothing, home furnishings,Refrigerant Gas R410A, computer and recording tapes, and electrical insulation.R407C Refrigerant Gas. It does not absorb moisture, but does absorb oil;Environmentally Friendly refrigerant gas R407C-, soil-, and fire-Refrigerant gas r407c With High Purity. Its low absorbency also makes it naturally resistant to stains.Net Weight 11.3kg Refrigerant Gas r407c,Refrigerant Gas R407C.Refrigerant Gas R406a With High Purity, and not damaged by mildew.High Purity Refrigerant Gas R404a, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Environmental Friendly Refrigerant Gas R404a-based E.I. du Pont de Nemours and Co.Replacement Of R22 Refrigerant Gas R404a. This early research, headed by W.H. Carothers,High Purity Refrigerant Gas R22, the first synthetic fiber. Soon after, in the years 1939-41, British research chemists took interest in the du Pont studies and conducted their own research in the laboratories of Calico Printers Association, Ltd. This work resulted in the creation of the polyester fiber known in England as Terylene.

In 1946,Chlorodifluoromethane Gas R22. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Refrigerant Gas R22,99.9% Pure Refrigerant Gas R22. Today, there are two primary types of polyester, PET (polyethylene terephthalate) and PCDT (poly-1, 4-cyclohexylene-dimethylene terephthalate). PET, the more popular type, is applicable to a wider variety of uses.Refrigerant Gas R22 In Disposable Cylinder, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Refrigerant Gas R32 In Substitution For R22.

Raw Materials

Polyester is a chemical term which can be broken intopoly,meaning many, andester,a basic organic chemical compound. The principle ingredient used in the manufacture of polyester is ethylene,99.9% Purity Refrigerant Gas R134a. In this process, ethylene is the polymer, the chemical building block of polyester,Car Air Conditioner Refrigerant R134a Gas Cylinder.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Tetrafluoroethane Refrigerant Gas R134a. The four basic forms are filament,Refrigerant Gas R134a, tow, and fiberfill. In the filament form,Forged Gate Valve, producing smooth-Gate Valve.Globe Valve, filaments are cut to short,Butterfly Valve.Cast Steel Swing Check Valve 300-5000wog. Tow is a form in which continuous filaments are drawn loosely together. Fiberfill is the voluminous form used in the manufacture of quilts, pillows, and outerwear.Stainless Steel Ball Check Valve.

Manufacturing Filament Yarn

Polymerization

• 1 To form polyester, dimethyl terephthalate is first reacted with ethylene glycol in the presence of a catalyst at a temperature of 302-410°F (150-210°C).
• 2 The resulting chemical, a monomer (single, non-repeating molecule) alcohol, is combined with terephthalic acid and raised to a temperature of 472°F (280°C). Newly-Forged Lift Check Valve Class 800#,Swing Check Valve, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Threaded Check Valve. The material is cut into tiny chips and completely dried to prevent irregularities in consistency.

Melt spinning

• 4 Polymer chips are melted at 500-518°F (260-270°C) to form a syrup-like solution.Lcc Flanged Check Valve Class 150#, which are usually round,Check Valve. The number of holes in the spinneret determines the size of the yarn,Grooved Ductile Iron Ball Valve.
• 5 At the spinning stage, other chemicals may be added to the solution to make the resulting material flame retardant, antistatic, or easier to dye.

Drawing the fiber

• 6 When polyester emerges from the spinneret,Grooved Ball Valve. The stretching forces the random polyester molecules to align in a parallel formation. This increases the strength, tenacity, and resilience of the fiber. This time, when the filaments dry,Ductile Iron Ball Valve Full Port.
• 2pc Cast Steel Ball Valve Full Port 2500-5000wog,Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog. Also,Bolted Ball Valve,Cast Steel Bolted Ball Valve Reduced Port 3000wog.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

4c Bolted Ball Valve Full Port 5000wog

Cast Steel Floating Flanged Ball Valve Class 150#, polymerization, drying, and melt spinning (steps 1-4 above) are much the same as in the manufacture of filament yarn. However, in the melt spinning process,Cast Steel Floating Flanged Ball Valve Class 600#. The rope-Stainless Steel Floating Flanged Ball Valve Class 150#.

Drawing tow

• 1 Newly-Trunnion Ball Valve.Cast Iron Flanged Ball Valve.

Crimping

• 2 Drawn tow is then fed into compression boxes,Cast Iron Floating Flanged Ball Valve JIS 10k, at a rate of 9-15 crimps per inch (3-6 per cm).Ball Valve JIS 10k.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Ball Valve ANSI.Stainless Steel Floating Flanged Ball Valve Class.

Cutting

• 4 Following heat setting,Cast Iron Floating Flanged Ball Valve JIS 16k. Polyester that will be blended with cotton is cut in 1.25-1.50 inch (3.2-3.8 cm) pieces; for rayon blends, 2 inch (5 cm)Flnaged Ball Valve.Ball Valve, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles.

The Future

To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch,Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container's fastest-growing fiber.Gift Card Carrier Box. However, polyester has suffered an "image problem" since that time, and clothes made out of polyester were often devalued and even ridiculed. Several new forms of polyester introduced in the early 1990s may help revitalize the image of polyester. A new form of polyester fiber,Hexagon Box, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Paper Box With Custom Logo. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Round Paper Cardboard Gift Box, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.