Polyester

Background

Pneumatic PVC Air Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Non Torsion PVC Garden Hose. In this reaction,Green PVC Garden Hose.All-weather PVC Garden Hose.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Reinforced Braided PVC Hose, computer and recording tapes, and electrical insulation.PVC Braided Hose Pipe. It does not absorb moisture, but does absorb oil;PVC Nylon Braided Hose-, soil-, and fire-PVC Wire Vacuum Transfer Hose. Its low absorbency also makes it naturally resistant to stains.Anti-Static PVC Steel Wire Hose,Fiber Reinforced PVC Steel Wire Hose.Non Toxic PVC Steel Wire Hose, and not damaged by mildew.PVC Fiber Reinforced Hose, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,General Purpose PVC Lay Flat Hose-based E.I. du Pont de Nemours and Co.Blue PVC Layflat Hose. This early research, headed by W.H. Carothers,PVC Lay Flat Water 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,Lay Flat Irrigation Hose. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Oxygen Acetylene Hose,Food Grade Crystal Clear Vinyl Tubing. 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.Flexible PVC Vinyl Tubing, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Welding Gas 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,Grey PVC Suction Hose. In this process, ethylene is the polymer, the chemical building block of polyester,Green PVC Suction Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Clear Orange Braid PVC Water Suction Discharge Transfer Hose. The four basic forms are filament,Heavy Duty Fabric Reinforced PVC Suction and Discharge Hose, tow, and fiberfill. In the filament form,PVC Suction Hose, producing smooth-General Purpose PVC Garden Hose.Reinforced Braided PVC Hose, filaments are cut to short,PVC Thunder Hose Pipe.PVC Spring 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.Non Toxic PVC Steel Wire 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-FDA Approved Food Grade PVC Steel Wire Hose,Clear PVC Fiber Reinforced Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,High Pressure PVC Lay Flat Hose. 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.Blue PVC Layflat Hose, which are usually round,PVC Lay Flat Water Delivery Hose. The number of holes in the spinneret determines the size of the yarn,Pool Backwash PVC Layflat Hose.
• 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,PVC Lay Flat Discharge Hose. 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,Sunny Layflat Hose.
• C19400,nickel silver alloy. Also,silver points,Steel rivets.

Winding

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

Aluminum rivets

copper rivets, 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,AgCdO Bimetal rivet. The rope-AgCdO contact.

Drawing tow

• 1 Newly-CNC Parts.CuBe2 Beryllium Copper Strip.

Crimping

• 2 Drawn tow is then fed into compression boxes,CuBe2 Beryllium Copper, at a rate of 9-15 crimps per inch (3-6 per cm).C17200 Beryllium Copper Strip.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)C17200 Beryllium Copper.Beryllium Copper.

Cutting

• 4 Following heat setting,CuSn6 Phosphor Bronze 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)C51900 Bronze Strip.C51000 Bronze Strip, such ascarpet,polyester filaments are cut into 6 inch (15 cm)CuSn5 Phosphor Bronze Strip.

The Future

C5100 Bronze Strip,C28000 Brass Strip's fastest-growing fiber.H63 Brass Strip Coil. 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,C27000 CuZn35 Brass, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,H65 Brass Strip Coil. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.C26000 CuZn30 Brass Strip, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.