Polyester

Background

PPR FITTINGS MADE IN CHINA, air, water, and petroleum. Developed in a 20th-century laboratory,PPR BRASS FITTING. In this reaction,PPR FITTINGS.PPR Double Female Elbow.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Pert Pipe, computer and recording tapes, and electrical insulation.Pex-a Evoh Pipes. It does not absorb moisture, but does absorb oil;Pex-A Pipe-, soil-, and fire-PPR Copper Coupler. Its low absorbency also makes it naturally resistant to stains.PPR Copper Reducer,PPR Copper Elbow 90°.PPR Copper Elbow 45°, and not damaged by mildew.PPR Copper Reduction Tee, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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 Pipe Clip. In this process, ethylene is the polymer, the chemical building block of polyester,PPR Female Union.

The Manufacturing
Process

Polyester is manufactured by one of several methods.PPR Female Threaded Union. The four basic forms are filament,Plastic Union, tow, and fiberfill. In the filament form,PPR Handle Wheel Stop Valves, producing smooth-PERT Stop Valve.PPR Radiator Stop Valve 180°, filaments are cut to short,PPR Type Y Stop Valve.PPR Stop 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.PPR Plastic Ball Valve 32mm.

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 Plastic Ball Valve 40mm,PPR Fiber Glass Composite Pipes Sdr6 S2.5 Pn25, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,high tensile strength pure gum rubber sheet. 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.Silicone CG Brown - 50A, which are usually round,Silicone CG Black - 50A. The number of holes in the spinneret determines the size of the yarn,General Purpose Rubber - 60A.
• 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,NATURAL GUM RUBBER. 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,GASKET.
• Owl Tea Light Candle Holder with Tealights,Colored Glass Lantern Candle Holder. Also,Decoration Rotary Tea Light Candlestick,Metal Spinning Round Candle Holder.

Winding

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

Wedding Table Centerpieces Rotary Candle Holder

Tabletop Wedding Decorative Rotary 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,Square Metal Candle Holder. The rope-Geometric Metal Candle Holders.

Drawing tow

• 1 Newly-Table Decorative Candlestick Holder.Set Of 3 Black Candle Holders.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Tree Tower Spinning Tea light Candle Holder.Butterfly Rotary Candle Holder.

Cutting

• 4 Following heat setting,Colorful Glass 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)Glass Rotary Candle Holder.Rotary Tea Light Candle Holder, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cylinder Rotary Candle Holder.

The Future

Vikings Rotary Candle Holder,Scandinavian Rotary Candle Holder's fastest-growing fiber.Kitten Spinning 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,Gold Carousel Rotary Candle Holder, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Halloween Rotary Candle Holder. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.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.