Polyester

Background

PVC Braided Hose Pipe, air, water, and petroleum. Developed in a 20th-century laboratory,PVC Nylon Braided Hose. In this reaction,PVC Wire Vacuum Transfer Hose.Anti-Static PVC Steel Wire Hose.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.PVC Thunder Hose Pipe. The four basic forms are filament,PVC Spring Hose, tow, and fiberfill. In the filament form,Non Toxic PVC Steel Wire Hose, producing smooth-FDA Approved Food Grade PVC Steel Wire Hose.Clear PVC Fiber Reinforced Hose, filaments are cut to short,High Pressure PVC Lay Flat Hose.Blue PVC Layflat 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.PVC Lay Flat Water Delivery 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-Pool Backwash PVC Layflat Hose,PVC Lay Flat Discharge Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Sunny Layflat 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.C19400, which are usually round,nickel silver alloy. The number of holes in the spinneret determines the size of the yarn,silver points.
• 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,Steel rivets. 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,Aluminum rivets.
• copper rivets,AgCdO Bimetal rivet. Also,AgCdO contact,CNC Parts.

Winding

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

CuBe2 Beryllium Copper Strip

CuBe2 Beryllium Copper, 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,C17200 Beryllium Copper Strip. The rope-C17200 Beryllium Copper.

Drawing tow

• 1 Newly-Beryllium Copper.CuSn6 Phosphor Bronze Strip.

Crimping

• 2 Drawn tow is then fed into compression boxes,C51900 Bronze Strip, at a rate of 9-15 crimps per inch (3-6 per cm).C51000 Bronze Strip.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)CuSn5 Phosphor Bronze Strip.C5100 Bronze Strip.

Cutting

• 4 Following heat setting,C28000 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)H63 Brass Strip Coil.C27000 CuZn35 Brass, such ascarpet,polyester filaments are cut into 6 inch (15 cm)H65 Brass Strip Coil.

The Future

C26000 CuZn30 Brass Strip,H80 Brass Strip Coil's fastest-growing fiber.C22000 CuZn10 Brass Strip. 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,C22000 Brass Strip, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Brass Strip. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.C75200 Copper Nickel Zinc Strip, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.