Polyester

Background

Torsion Free Garden Hose, air, water, and petroleum. Developed in a 20th-century laboratory,Reinforced Braided PVC Hose. In this reaction,Clear PVC Braided Hose.Steel Wire Reinforced PVC Hose.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Non Toxic PVC Steel Wire Hose, computer and recording tapes, and electrical insulation.Medium Duty PVC Lay Flat Hose. It does not absorb moisture, but does absorb oil;Pool Backwash PVC Layflat Hose-, soil-, and fire-PVC Lay Flat Hose. Its low absorbency also makes it naturally resistant to stains.Industrial PVC Steel Wire Suction Hose,Gas Hose.Oxygen and Acetylene Torch Welding 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,Vinyl Tubing-based E.I. du Pont de Nemours and Co.Welding Gas Hose. This early research, headed by W.H. Carothers,PVC Suction 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,Grey PVC Suction Hose. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Textile Braided PVC Suction and Discharge Hose,Corrugated Clear Braided PVC Suction and 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.Pneumatic PVC Air Hose, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Non Torsion PVC Garden 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,Green PVC Garden Hose. In this process, ethylene is the polymer, the chemical building block of polyester,All-weather PVC Garden Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Reinforced Braided PVC Hose. The four basic forms are filament,PVC Braided Hose Pipe, tow, and fiberfill. In the filament form,PVC Nylon Braided Hose, producing smooth-PVC Wire Vacuum Transfer Hose.Anti-Static PVC Steel Wire Hose, filaments are cut to short,Fiber Reinforced PVC Steel Wire Hose.Non Toxic PVC Steel Wire 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 Fiber Reinforced 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-General Purpose PVC Lay Flat Hose,Blue PVC Layflat Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,PVC Lay Flat Water 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.Lay Flat Irrigation Hose, which are usually round,Oxygen Acetylene Hose. The number of holes in the spinneret determines the size of the yarn,Food Grade Crystal Clear Vinyl Tubing.
• 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,Flexible PVC Vinyl Tubing. 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,Welding Gas Hose.
• Grey PVC Suction Hose,Green PVC Suction Hose. Also,Clear Orange Braid PVC Water Suction Discharge Transfer Hose,Heavy Duty Fabric Reinforced PVC Suction and Discharge 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.

PVC Suction Hose

General Purpose PVC Garden 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,Reinforced Braided PVC Hose. The rope-PVC Thunder Hose Pipe.

Drawing tow

• 1 Newly-PVC Spring Hose.Non Toxic PVC Steel Wire Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,FDA Approved Food Grade PVC Steel Wire Hose, at a rate of 9-15 crimps per inch (3-6 per cm).Clear PVC Fiber Reinforced Hose.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)High Pressure PVC Lay Flat Hose.Blue PVC Layflat Hose.

Cutting

• 4 Following heat setting,PVC Lay Flat Water Delivery 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)Pool Backwash PVC Layflat Hose.PVC Lay Flat Discharge Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Sunny Layflat Hose.

The Future

C19400,nickel silver alloy's fastest-growing fiber.silver points. 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,Steel rivets, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Aluminum rivets. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.copper rivets, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.