Polyester

Background

Green PVC Suction Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Clear Orange Braid PVC Water Suction Discharge Transfer Hose. In this reaction,Heavy Duty Fabric Reinforced PVC Suction and Discharge Hose.PVC Suction Hose.

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

History

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

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,Steel rivets. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminum rivets.

The Manufacturing
Process

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

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-Beryllium Copper,CuSn6 Phosphor Bronze Strip, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,C51900 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.C51000 Bronze Strip, which are usually round,CuSn5 Phosphor Bronze Strip. The number of holes in the spinneret determines the size of the yarn,C5100 Bronze 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,C28000 Brass Strip. 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,H63 Brass Strip Coil.
• C27000 CuZn35 Brass,H65 Brass Strip Coil. Also,C26000 CuZn30 Brass Strip,H80 Brass Strip Coil.

Winding

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

C22000 CuZn10 Brass Strip

C22000 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,Brass Strip. The rope-C75200 Copper Nickel Zinc Strip.

Drawing tow

• 1 Newly-C7701 C7521 Nickel Silver Strip.Copper Nickel Zinc.

Crimping

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

Setting

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

Cutting

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

The Future

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