Polyester

Background

Food Grade Crystal Clear Vinyl Tubing, air, water, and petroleum. Developed in a 20th-century laboratory,Flexible PVC Vinyl Tubing. In this reaction,Welding Gas Hose.Grey PVC Suction Hose.

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

History

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

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,Sunny Layflat Hose. In this process, ethylene is the polymer, the chemical building block of polyester,C19400.

The Manufacturing
Process

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

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-CuBe2 Beryllium Copper Strip,CuBe2 Beryllium Copper, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,C17200 Beryllium Copper Strip. 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.C17200 Beryllium Copper, which are usually round,Beryllium Copper. The number of holes in the spinneret determines the size of the yarn,CuSn6 Phosphor 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,C51900 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,C51000 Bronze Strip.
• CuSn5 Phosphor Bronze Strip,C5100 Bronze Strip. Also,C28000 Brass Strip,H63 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.

C27000 CuZn35 Brass

H65 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,C26000 CuZn30 Brass Strip. The rope-H80 Brass Strip Coil.

Drawing tow

• 1 Newly-C22000 CuZn10 Brass Strip.C22000 Brass Strip.

Crimping

• 2 Drawn tow is then fed into compression boxes,Brass Strip, at a rate of 9-15 crimps per inch (3-6 per cm).C75200 Copper Nickel Zinc Strip.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)C7701 C7521 Nickel Silver Strip.Copper Nickel Zinc.

Cutting

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

The Future

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