Polyester

Background

Medium Duty PVC Lay Flat Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Pool Backwash PVC Layflat Hose. In this reaction,PVC Lay Flat Hose.Industrial PVC Steel Wire Suction Hose.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Gas Hose, computer and recording tapes, and electrical insulation.Oxygen and Acetylene Torch Welding Hose. It does not absorb moisture, but does absorb oil;Oxygen Acetylene Hose-, soil-, and fire-Vinyl Tubing. Its low absorbency also makes it naturally resistant to stains.Welding Gas Hose,PVC Suction Hose Pipe.Grey PVC Suction Hose, and not damaged by mildew.Textile Braided PVC Suction and Discharge Hose, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Corrugated Clear Braided PVC Suction and Transfer Hose-based E.I. du Pont de Nemours and Co.Pneumatic PVC Air Hose. This early research, headed by W.H. Carothers,Non Torsion PVC Garden 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,Green PVC Garden Hose. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.All-weather PVC Garden Hose,Reinforced Braided PVC 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.PVC Braided Hose Pipe, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.PVC Nylon Braided 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 Wire Vacuum Transfer Hose. In this process, ethylene is the polymer, the chemical building block of polyester,Anti-Static PVC Steel Wire Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Fiber Reinforced PVC Steel Wire Hose. The four basic forms are filament,Non Toxic PVC Steel Wire Hose, tow, and fiberfill. In the filament form,PVC Fiber Reinforced Hose, producing smooth-General Purpose PVC Lay Flat Hose.Blue PVC Layflat Hose, filaments are cut to short,PVC Lay Flat Water Discharge Hose.Lay Flat Irrigation 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.Oxygen Acetylene 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-Food Grade Crystal Clear Vinyl Tubing,Flexible PVC Vinyl Tubing, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Welding Gas 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.Grey PVC Suction Hose, which are usually round,Green PVC Suction Hose. The number of holes in the spinneret determines the size of the yarn,Clear Orange Braid PVC Water Suction Discharge Transfer 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,Heavy Duty Fabric Reinforced PVC Suction and 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,PVC Suction Hose.
• General Purpose PVC Garden Hose,Reinforced Braided PVC Hose. Also,PVC Thunder Hose Pipe,PVC Spring Hose.

Winding

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

Non Toxic PVC Steel Wire Hose

FDA Approved Food Grade PVC Steel Wire Hose, 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,Clear PVC Fiber Reinforced Hose. The rope-High Pressure PVC Lay Flat Hose.

Drawing tow

• 1 Newly-Blue PVC Layflat Hose.PVC Lay Flat Water Delivery Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,Pool Backwash PVC Layflat Hose, at a rate of 9-15 crimps per inch (3-6 per cm).PVC Lay Flat Discharge Hose.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Sunny Layflat Hose.C19400.

Cutting

• 4 Following heat setting,nickel silver alloy. 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 points.Steel rivets, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Aluminum rivets.

The Future

copper rivets,AgCdO Bimetal rivet's fastest-growing fiber.AgCdO contact. 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,CNC Parts, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,CuBe2 Beryllium Copper Strip. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.CuBe2 Beryllium Copper, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.