Polyester

Background

Gas Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Oxygen and Acetylene Torch Welding Hose. In this reaction,Oxygen Acetylene Hose.Vinyl Tubing.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Blue PVC Layflat Hose. The four basic forms are filament,PVC Lay Flat Water Discharge Hose, tow, and fiberfill. In the filament form,Lay Flat Irrigation Hose, producing smooth-Oxygen Acetylene Hose.Food Grade Crystal Clear Vinyl Tubing, filaments are cut to short,Flexible PVC Vinyl Tubing.Welding Gas 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.Grey PVC Suction 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-Green PVC Suction Hose,Clear Orange Braid PVC Water Suction Discharge Transfer Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Heavy Duty Fabric Reinforced PVC Suction and Discharge 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.PVC Suction Hose, which are usually round,General Purpose PVC Garden Hose. The number of holes in the spinneret determines the size of the yarn,Reinforced Braided PVC 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,PVC Thunder Hose Pipe. 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 Spring Hose.
• Non Toxic PVC Steel Wire Hose,FDA Approved Food Grade PVC Steel Wire Hose. Also,Clear PVC Fiber Reinforced Hose,High Pressure PVC Lay Flat 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.

Blue PVC Layflat Hose

PVC Lay Flat Water Delivery 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,Pool Backwash PVC Layflat Hose. The rope-PVC Lay Flat Discharge Hose.

Drawing tow

• 1 Newly-Sunny Layflat Hose.C19400.

Crimping

• 2 Drawn tow is then fed into compression boxes,nickel silver alloy, at a rate of 9-15 crimps per inch (3-6 per cm).silver points.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Steel rivets.Aluminum rivets.

Cutting

• 4 Following heat setting,copper rivets. 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)AgCdO Bimetal rivet.AgCdO contact, such ascarpet,polyester filaments are cut into 6 inch (15 cm)CNC Parts.

The Future

CuBe2 Beryllium Copper Strip,CuBe2 Beryllium Copper's fastest-growing fiber.C17200 Beryllium Copper 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,C17200 Beryllium Copper, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Beryllium Copper. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.CuSn6 Phosphor Bronze Strip, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.