Polyester

Background

Welding Gas Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Grey PVC Suction Hose. In this reaction,Green PVC Suction Hose.Clear Orange Braid PVC Water Suction Discharge Transfer Hose.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Heavy Duty Fabric Reinforced PVC Suction and Discharge Hose, computer and recording tapes, and electrical insulation.PVC Suction Hose. It does not absorb moisture, but does absorb oil;General Purpose PVC Garden Hose-, soil-, and fire-Reinforced Braided PVC Hose. Its low absorbency also makes it naturally resistant to stains.PVC Thunder Hose Pipe,PVC Spring Hose.Non Toxic PVC Steel Wire Hose, and not damaged by mildew.FDA Approved Food Grade PVC Steel Wire Hose, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Clear PVC Fiber Reinforced Hose-based E.I. du Pont de Nemours and Co.High Pressure PVC Lay Flat Hose. This early research, headed by W.H. Carothers,Blue PVC Layflat Hose, 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,PVC Lay Flat Water Delivery Hose. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Pool Backwash PVC Layflat Hose,PVC Lay Flat Discharge Hose. 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.Sunny Layflat Hose, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.C19400.

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,nickel silver alloy. In this process, ethylene is the polymer, the chemical building block of polyester,silver points.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Steel rivets. The four basic forms are filament,Aluminum rivets, tow, and fiberfill. In the filament form,copper rivets, producing smooth-AgCdO Bimetal rivet.AgCdO contact, filaments are cut to short,CNC Parts.CuBe2 Beryllium Copper Strip. 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.CuBe2 Beryllium Copper.

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-C17200 Beryllium Copper Strip,C17200 Beryllium Copper, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Beryllium Copper. 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.CuSn6 Phosphor Bronze Strip, which are usually round,C51900 Bronze Strip. The number of holes in the spinneret determines the size of the yarn,C51000 Bronze Strip.
• 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,CuSn5 Phosphor Bronze Strip. 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,C5100 Bronze Strip.
• C28000 Brass Strip,H63 Brass Strip Coil. Also,C27000 CuZn35 Brass,H65 Brass Strip Coil.

Winding

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

C26000 CuZn30 Brass Strip

H80 Brass Strip Coil, 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,C22000 CuZn10 Brass Strip. The rope-C22000 Brass Strip.

Drawing tow

• 1 Newly-Brass Strip.C75200 Copper Nickel Zinc Strip.

Crimping

• 2 Drawn tow is then fed into compression boxes,C7701 C7521 Nickel Silver Strip, at a rate of 9-15 crimps per inch (3-6 per cm).Copper Nickel Zinc.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Nickel Silver Strip.Nickel Plated Copper Strip.

Cutting

• 4 Following heat setting,PCB Copper. 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)Copper Clad.Silver Onlay Brass Strip, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Silver Onlay.

The Future

Silver Clad Copper Strip,Silver Clad's fastest-growing fiber.Semi Tubular Brass Rivet. 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,Brass Tubular Rivet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Solid Brass Rivet. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Solid Copper Rivets, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.