Polyester

Background

High Purity Refrigerant Gas R404a, air, water, and petroleum. Developed in a 20th-century laboratory,Environmental Friendly Refrigerant Gas R404a. In this reaction,Replacement Of R22 Refrigerant Gas R404a.High Purity Refrigerant Gas R22.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Chlorodifluoromethane Gas R22, computer and recording tapes, and electrical insulation.Refrigerant Gas R22. It does not absorb moisture, but does absorb oil;99.9% Pure Refrigerant Gas R22-, soil-, and fire-Refrigerant Gas R22 In Disposable Cylinder. Its low absorbency also makes it naturally resistant to stains.Refrigerant Gas R32 In Substitution For R22,99.9% Purity Refrigerant Gas R134a.Car Air Conditioner Refrigerant R134a Gas Cylinder, and not damaged by mildew.Tetrafluoroethane Refrigerant Gas R134a, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Refrigerant Gas R134a-based E.I. du Pont de Nemours and Co.Forged Gate Valve. This early research, headed by W.H. Carothers,Gate Valve, 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,Globe Valve. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Butterfly Valve,Cast Steel Swing Check Valve 300-5000wog. 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.Stainless Steel Ball Check Valve, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Forged Lift Check Valve Class 800#.

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,Swing Check Valve. In this process, ethylene is the polymer, the chemical building block of polyester,Threaded Check Valve.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Lcc Flanged Check Valve Class 150#. The four basic forms are filament,Check Valve, tow, and fiberfill. In the filament form,Grooved Ductile Iron Ball Valve, producing smooth-Grooved Ball Valve.Ductile Iron Ball Valve Full Port, filaments are cut to short,2pc Cast Steel Ball Valve Full Port 2500-5000wog.Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog. 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.Bolted Ball 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-Cast Steel Bolted Ball Valve Reduced Port 3000wog,4c Bolted Ball Valve Full Port 5000wog, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Cast Steel Floating Flanged Ball Valve Class 150#. 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.Cast Steel Floating Flanged Ball Valve Class 600#, which are usually round,Stainless Steel Floating Flanged Ball Valve Class 150#. The number of holes in the spinneret determines the size of the yarn,Trunnion 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,Cast Iron Flanged 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,Cast Iron Floating Flanged Ball Valve JIS 10k.
• Ball Valve JIS 10k,Ball Valve ANSI. Also,Stainless Steel Floating Flanged Ball Valve Class,Cast Iron Floating Flanged Ball Valve JIS 16k.

Winding

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

Flnaged Ball Valve

Ball Valve, 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,Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles. The rope-To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch.

Drawing tow

• 1 Newly-Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container.Gift Card Carrier Box.

Crimping

• 2 Drawn tow is then fed into compression boxes,Hexagon Box, at a rate of 9-15 crimps per inch (3-6 per cm).Paper Box With Custom Logo.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Round Paper Cardboard Gift Box.Custom Luxury Jewelry Case.

Cutting

• 4 Following heat setting,Aluminum Foil Bag. 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)Bags&Pouches.Stone Paper Bags, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Stone Paper Books.

The Future

Stone Paper Eco Friendly Tissue Holder,Stone Carton Board 2mm's fastest-growing fiber.Stone Carton Board 3mm. 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,Stone Paper Carton Board, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Stone Paper Film 60um. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Stone Paper Film, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.