Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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-Flexible PVC Vinyl Tubing,Welding Gas Hose, is extruded through a slot to form long ribbons.

Drying

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

FDA Approved Food Grade PVC Steel Wire Hose

Clear PVC Fiber Reinforced 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,High Pressure PVC Lay Flat Hose. The rope-Blue PVC Layflat Hose.

Drawing tow

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

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)C19400.nickel silver alloy.

Cutting

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

The Future

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