Polyester

Background

Oversized Page Pop It, air, water, and petroleum. Developed in a 20th-century laboratory,Double Chessboard Fidget. In this reaction,Ice Cream Fidget.Silicone Daily Necessities.

Polyester is used in the manufacture of many products, including clothing, home furnishings,PPR FITTINGS MADE IN CHINA, computer and recording tapes, and electrical insulation.PPR BRASS FITTING. It does not absorb moisture, but does absorb oil;PPR FITTINGS-, soil-, and fire-PPR Double Female Elbow. Its low absorbency also makes it naturally resistant to stains.Pert Pipe,Pex-a Evoh Pipes.Pex-A Pipe, and not damaged by mildew.PPR Copper Coupler, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,PPR Copper Reducer-based E.I. du Pont de Nemours and Co.PPR Copper Elbow 90°. This early research, headed by W.H. Carothers,PPR Copper Elbow 45°, 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,PPR Copper Reduction Tee. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.PPR Copper Female Tee,PPR Copper Male Tee. 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.PPR Copper Female Socket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.PPR Copper Fittings.

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,PPR Male Adapter. In this process, ethylene is the polymer, the chemical building block of polyester,Elbow with Female Coupling.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Under Plaster Group. The four basic forms are filament,Double Female Elbow, tow, and fiberfill. In the filament form,PPR Pipe Clip, producing smooth-PPR Female Union.PPR Female Threaded Union, filaments are cut to short,Plastic Union.PPR Handle Wheel Stop Valves. 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.PERT Stop 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-PPR Radiator Stop Valve 180°,PPR Type Y Stop Valve, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,PPR Stop 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.PPR Plastic Ball Valve 32mm, which are usually round,PPR Plastic Ball Valve 40mm. The number of holes in the spinneret determines the size of the yarn,PPR Fiber Glass Composite Pipes Sdr6 S2.5 Pn25.
• 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,high tensile strength pure gum rubber sheet. 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,Silicone CG Brown - 50A.
• Silicone CG Black - 50A,General Purpose Rubber - 60A. Also,NATURAL GUM RUBBER,GASKET.

Winding

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

Owl Tea Light Candle Holder with Tealights

Colored Glass Lantern Candle Holder, 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,Decoration Rotary Tea Light Candlestick. The rope-Metal Spinning Round Candle Holder.

Drawing tow

• 1 Newly-Wedding Table Centerpieces Rotary Candle Holder.Tabletop Wedding Decorative Rotary Candle Holder.

Crimping

• 2 Drawn tow is then fed into compression boxes,Square Metal Candle Holder, at a rate of 9-15 crimps per inch (3-6 per cm).Geometric Metal Candle Holders.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Table Decorative Candlestick Holder.Set Of 3 Black Candle Holders.

Cutting

• 4 Following heat setting,Angel Rotary Candle Holder. 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)Reindeer Rotary Candle Holder.Tree Tower Spinning Tea light Candle Holder, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Butterfly Rotary Candle Holder.

The Future

Colorful Glass Rotary Candle Holder,Glass Rotary Candle Holder's fastest-growing fiber.Rotary Tea Light Candle Holder. 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,Cylinder Rotary Candle Holder, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Vikings Rotary Candle Holder. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Scandinavian Rotary Candle Holder, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.