Polyester

Background

Heavy Duty Fabric Reinforced PVC Suction and Discharge Hose, air, water, and petroleum. Developed in a 20th-century laboratory,PVC Suction Hose. In this reaction,General Purpose PVC Garden Hose.Reinforced Braided PVC Hose.

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

History

In 1926,Pool Backwash PVC Layflat Hose-based E.I. du Pont de Nemours and Co.PVC Lay Flat Discharge Hose. This early research, headed by W.H. Carothers,Sunny Layflat 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,C19400. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.nickel silver alloy,silver points. 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.Steel rivets, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Aluminum rivets.

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,copper rivets. In this process, ethylene is the polymer, the chemical building block of polyester,AgCdO Bimetal rivet.

The Manufacturing
Process

Polyester is manufactured by one of several methods.AgCdO contact. The four basic forms are filament,CNC Parts, tow, and fiberfill. In the filament form,CuBe2 Beryllium Copper Strip, producing smooth-CuBe2 Beryllium Copper.C17200 Beryllium Copper Strip, filaments are cut to short,C17200 Beryllium Copper.Beryllium Copper. 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.CuSn6 Phosphor Bronze Strip.

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-C51900 Bronze Strip,C51000 Bronze Strip, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,CuSn5 Phosphor Bronze Strip. 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.C5100 Bronze Strip, which are usually round,C28000 Brass Strip. The number of holes in the spinneret determines the size of the yarn,H63 Brass Strip Coil.
• 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,C27000 CuZn35 Brass. 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,H65 Brass Strip Coil.
• C26000 CuZn30 Brass Strip,H80 Brass Strip Coil. Also,C22000 CuZn10 Brass Strip,C22000 Brass 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.

Brass Strip

C75200 Copper Nickel Zinc 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,C7701 C7521 Nickel Silver Strip. The rope-Copper Nickel Zinc.

Drawing tow

• 1 Newly-Nickel Silver Strip.Nickel Plated Copper Strip.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Silver Clad Copper 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)Silver Clad.Semi Tubular Brass Rivet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Brass Tubular Rivet.

The Future

Solid Brass Rivet,Solid Copper Rivets's fastest-growing fiber.Copper Rivet. 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 Contact Points, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Electrical Contact Rivets. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Silver Tungsten Electrical Contact, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.