Polyester

Background

PVC Lay Flat Water Discharge Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Lay Flat Irrigation Hose. In this reaction,Oxygen Acetylene Hose.Food Grade Crystal Clear Vinyl Tubing.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Flexible PVC Vinyl Tubing, computer and recording tapes, and electrical insulation.Welding Gas Hose. It does not absorb moisture, but does absorb oil;Grey PVC Suction Hose-, soil-, and fire-Green PVC Suction Hose. Its low absorbency also makes it naturally resistant to stains.Clear Orange Braid PVC Water Suction Discharge Transfer Hose,Heavy Duty Fabric Reinforced PVC Suction and Discharge Hose.PVC Suction Hose, and not damaged by mildew.General Purpose PVC Garden Hose, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.PVC Lay Flat Discharge Hose. The four basic forms are filament,Sunny Layflat Hose, tow, and fiberfill. In the filament form,C19400, producing smooth-nickel silver alloy.silver points, filaments are cut to short,Steel rivets.Aluminum rivets. 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.copper rivets.

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-AgCdO Bimetal rivet,AgCdO contact, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,CNC Parts. 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.CuBe2 Beryllium Copper Strip, which are usually round,CuBe2 Beryllium Copper. The number of holes in the spinneret determines the size of the yarn,C17200 Beryllium Copper Strip.
• 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,C17200 Beryllium Copper. 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,Beryllium Copper.
• CuSn6 Phosphor Bronze Strip,C51900 Bronze Strip. Also,C51000 Bronze Strip,CuSn5 Phosphor Bronze 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.

C5100 Bronze Strip

C28000 Brass 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,H63 Brass Strip Coil. The rope-C27000 CuZn35 Brass.

Drawing tow

• 1 Newly-H65 Brass Strip Coil.C26000 CuZn30 Brass Strip.

Crimping

• 2 Drawn tow is then fed into compression boxes,H80 Brass Strip Coil, at a rate of 9-15 crimps per inch (3-6 per cm).C22000 CuZn10 Brass Strip.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)C22000 Brass Strip.Brass Strip.

Cutting

• 4 Following heat setting,C75200 Copper Nickel Zinc 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)C7701 C7521 Nickel Silver Strip.Copper Nickel Zinc, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Nickel Silver Strip.

The Future

Nickel Plated Copper Strip,PCB Copper's fastest-growing fiber.Copper Clad. 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,Silver Onlay Brass Strip, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Silver Onlay. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Silver Clad 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.