Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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-silver points,Steel rivets, is extruded through a slot to form long ribbons.

Drying

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

CuSn6 Phosphor Bronze Strip

C51900 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,C51000 Bronze Strip. The rope-CuSn5 Phosphor Bronze Strip.

Drawing tow

• 1 Newly-C5100 Bronze Strip.C28000 Brass Strip.

Crimping

• 2 Drawn tow is then fed into compression boxes,H63 Brass Strip Coil, at a rate of 9-15 crimps per inch (3-6 per cm).C27000 CuZn35 Brass.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)H65 Brass Strip Coil.C26000 CuZn30 Brass Strip.

Cutting

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

The Future

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