Polyester

Background

PVC Wire Vacuum Transfer Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Anti-Static PVC Steel Wire Hose. In this reaction,Fiber Reinforced PVC Steel Wire Hose.Non Toxic PVC Steel Wire Hose.

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

History

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

The Manufacturing
Process

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

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-Sunny Layflat Hose,C19400, is extruded through a slot to form long ribbons.

Drying

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

C17200 Beryllium Copper Strip

C17200 Beryllium Copper, 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,Beryllium Copper. The rope-CuSn6 Phosphor Bronze Strip.

Drawing tow

• 1 Newly-C51900 Bronze Strip.C51000 Bronze Strip.

Crimping

• 2 Drawn tow is then fed into compression boxes,CuSn5 Phosphor Bronze Strip, at a rate of 9-15 crimps per inch (3-6 per cm).C5100 Bronze Strip.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)C28000 Brass Strip.H63 Brass Strip Coil.

Cutting

• 4 Following heat setting,C27000 CuZn35 Brass. 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)H65 Brass Strip Coil.C26000 CuZn30 Brass Strip, such ascarpet,polyester filaments are cut into 6 inch (15 cm)H80 Brass Strip Coil.

The Future

C22000 CuZn10 Brass Strip,C22000 Brass Strip's fastest-growing fiber.Brass 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,C75200 Copper Nickel Zinc Strip, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,C7701 C7521 Nickel Silver Strip. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Copper Nickel Zinc, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.