Polyester

Background

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

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

History

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

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,Threaded Check Valve. In this process, ethylene is the polymer, the chemical building block of polyester,Lcc Flanged Check Valve Class 150#.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Check Valve. The four basic forms are filament,Grooved Ductile Iron Ball Valve, tow, and fiberfill. In the filament form,Grooved Ball Valve, producing smooth-Ductile Iron Ball Valve Full Port.2pc Cast Steel Ball Valve Full Port 2500-5000wog, filaments are cut to short,Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog.Bolted Ball Valve. 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.Cast Steel Bolted Ball Valve Reduced Port 3000wog.

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-4c Bolted Ball Valve Full Port 5000wog,Cast Steel Floating Flanged Ball Valve Class 150#, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Ball Valve

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

Drawing tow

• 1 Newly-Gift Card Carrier Box.Hexagon Box.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Custom Luxury Jewelry Case.Aluminum Foil Bag.

Cutting

• 4 Following heat setting,Bags&Pouches. 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)Stone Paper Bags.Stone Paper Books, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Stone Paper Eco Friendly Tissue Holder.

The Future

Stone Carton Board 2mm,Stone Carton Board 3mm's fastest-growing fiber.Stone Paper Carton Board. 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 Film 60um, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Stone Paper Film. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Stone Card Paper 250um, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.