Polyester

Background

Non-kink PVC Garden Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Home PVC Garden Hose. In this reaction,Flexible PVC Garden Hose.Anti-UV PVC Garden Hose.

Polyester is used in the manufacture of many products, including clothing, home furnishings,PVC Garden Hose, computer and recording tapes, and electrical insulation.Torsion Free Garden Hose. It does not absorb moisture, but does absorb oil;Reinforced Braided PVC Hose-, soil-, and fire-Clear PVC Braided Hose. Its low absorbency also makes it naturally resistant to stains.Steel Wire Reinforced PVC Hose,Non Toxic PVC Steel Wire Hose.Medium Duty PVC Lay Flat Hose, and not damaged by mildew.Pool Backwash PVC Layflat Hose, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,PVC Lay Flat Hose-based E.I. du Pont de Nemours and Co.Industrial PVC Steel Wire Suction Hose. This early research, headed by W.H. Carothers,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,Oxygen and Acetylene Torch Welding Hose. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Oxygen Acetylene Hose,Vinyl Tubing. 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.Welding Gas 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 Pipe.

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,Grey PVC Suction Hose. In this process, ethylene is the polymer, the chemical building block of polyester,Textile Braided PVC Suction and Discharge Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Corrugated Clear Braided PVC Suction and Transfer Hose. The four basic forms are filament,Pneumatic PVC Air Hose, tow, and fiberfill. In the filament form,Non Torsion PVC Garden Hose, producing smooth-Green PVC Garden Hose.All-weather PVC Garden Hose, filaments are cut to short,Reinforced Braided PVC Hose.PVC Braided Hose Pipe. 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 Nylon Braided 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-PVC Wire Vacuum Transfer Hose,Anti-Static PVC Steel Wire Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Fiber Reinforced PVC Steel Wire 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.Non Toxic PVC Steel Wire Hose, which are usually round,PVC Fiber Reinforced Hose. The number of holes in the spinneret determines the size of the yarn,General Purpose PVC Lay Flat 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,Blue PVC Layflat 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 Lay Flat Water Discharge Hose.
• Lay Flat Irrigation Hose,Oxygen Acetylene Hose. Also,Food Grade Crystal Clear Vinyl Tubing,Flexible PVC Vinyl Tubing.

Winding

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

Welding Gas Hose

Grey PVC Suction 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,Green PVC Suction Hose. The rope-Clear Orange Braid PVC Water Suction Discharge Transfer Hose.

Drawing tow

• 1 Newly-Heavy Duty Fabric Reinforced PVC Suction and Discharge Hose.PVC Suction Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,General Purpose PVC Garden Hose, at a rate of 9-15 crimps per inch (3-6 per cm).Reinforced Braided PVC Hose.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)PVC Thunder Hose Pipe.PVC Spring Hose.

Cutting

• 4 Following heat setting,Non Toxic PVC Steel Wire Hose. 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)FDA Approved Food Grade PVC Steel Wire Hose.Clear PVC Fiber Reinforced Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)High Pressure PVC Lay Flat Hose.

The Future

Blue PVC Layflat Hose,PVC Lay Flat Water Delivery Hose's fastest-growing fiber.Pool Backwash PVC Layflat Hose. 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,PVC Lay Flat Discharge Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Sunny Layflat Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.C19400, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.