Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,C19400. 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.nickel silver alloy, which are usually round,silver points. The number of holes in the spinneret determines the size of the yarn,Steel 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,Aluminum 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,copper rivets.
• AgCdO Bimetal rivet,AgCdO contact. Also,CNC Parts,CuBe2 Beryllium Copper Strip.

Winding

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

CuBe2 Beryllium Copper

C17200 Beryllium Copper 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,C17200 Beryllium Copper. The rope-Beryllium Copper.

Drawing tow

• 1 Newly-CuSn6 Phosphor Bronze Strip.C51900 Bronze Strip.

Crimping

• 2 Drawn tow is then fed into compression boxes,C51000 Bronze Strip, at a rate of 9-15 crimps per inch (3-6 per cm).CuSn5 Phosphor Bronze Strip.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)C5100 Bronze Strip.C28000 Brass Strip.

Cutting

• 4 Following heat setting,H63 Brass Strip Coil. 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)C27000 CuZn35 Brass.H65 Brass Strip Coil, such ascarpet,polyester filaments are cut into 6 inch (15 cm)C26000 CuZn30 Brass Strip.

The Future

H80 Brass Strip Coil,C22000 CuZn10 Brass Strip's fastest-growing fiber.C22000 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,Brass Strip, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,C75200 Copper Nickel Zinc Strip. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.C7701 C7521 Nickel Silver Strip, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.