Polyester

Background

Fiber Reinforced PVC Steel Wire Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Non Toxic PVC Steel Wire Hose. In this reaction,PVC Fiber Reinforced Hose.General Purpose PVC Lay Flat Hose.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Blue PVC Layflat Hose, computer and recording tapes, and electrical insulation.PVC Lay Flat Water Discharge Hose. It does not absorb moisture, but does absorb oil;Lay Flat Irrigation Hose-, soil-, and fire-Oxygen Acetylene Hose. Its low absorbency also makes it naturally resistant to stains.Food Grade Crystal Clear Vinyl Tubing,Flexible PVC Vinyl Tubing.Welding Gas Hose, and not damaged by mildew.Grey PVC Suction Hose, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Green PVC Suction Hose-based E.I. du Pont de Nemours and Co.Clear Orange Braid PVC Water Suction Discharge Transfer Hose. This early research, headed by W.H. Carothers,Heavy Duty Fabric Reinforced PVC Suction and Discharge 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 Suction Hose. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.General Purpose PVC Garden Hose,Reinforced Braided PVC 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.PVC Thunder Hose Pipe, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.PVC Spring 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,Non Toxic PVC Steel Wire Hose. In this process, ethylene is the polymer, the chemical building block of polyester,FDA Approved Food Grade PVC Steel Wire Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Clear PVC Fiber Reinforced Hose. The four basic forms are filament,High Pressure PVC Lay Flat Hose, tow, and fiberfill. In the filament form,Blue PVC Layflat Hose, producing smooth-PVC Lay Flat Water Delivery Hose.Pool Backwash PVC Layflat Hose, filaments are cut to short,PVC Lay Flat Discharge Hose.Sunny Layflat Hose. 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.C19400.

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-nickel silver alloy,silver points, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Steel rivets. 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.Aluminum rivets, which are usually round,copper rivets. The number of holes in the spinneret determines the size of the yarn,AgCdO Bimetal rivet.
• 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,AgCdO contact. 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,CNC Parts.
• CuBe2 Beryllium Copper Strip,CuBe2 Beryllium Copper. Also,C17200 Beryllium Copper Strip,C17200 Beryllium Copper.

Winding

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

Beryllium Copper

CuSn6 Phosphor Bronze Strip, 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,C51900 Bronze Strip. The rope-C51000 Bronze Strip.

Drawing tow

• 1 Newly-CuSn5 Phosphor Bronze Strip.C5100 Bronze Strip.

Crimping

• 2 Drawn tow is then fed into compression boxes,C28000 Brass Strip, at a rate of 9-15 crimps per inch (3-6 per cm).H63 Brass Strip Coil.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)C27000 CuZn35 Brass.H65 Brass Strip Coil.

Cutting

• 4 Following heat setting,C26000 CuZn30 Brass 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)H80 Brass Strip Coil.C22000 CuZn10 Brass Strip, such ascarpet,polyester filaments are cut into 6 inch (15 cm)C22000 Brass Strip.

The Future

Brass Strip,C75200 Copper Nickel Zinc Strip's fastest-growing fiber.C7701 C7521 Nickel Silver 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,Copper Nickel Zinc, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Nickel Silver Strip. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Nickel Plated Copper Strip, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.