Polyester

Background

Cloth Christmas Gift Bag, air, water, and petroleum. Developed in a 20th-century laboratory,Gift Cloth Pouch. In this reaction,Drawstring Sunglasses Pouch.Microfiber Pouch.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Printing Paper Shopping Bag, computer and recording tapes, and electrical insulation.Shopping Gift Paper Bag For Packaging. It does not absorb moisture, but does absorb oil;Paper Bags-, soil-, and fire-Soft Microfiber Cleaning Cloth For Jewelry. Its low absorbency also makes it naturally resistant to stains.Jewelry Polishing Cleaning Cloth Printed,Microfiber Camera Cleaning Cloth.Camera Cleaning Cloth, and not damaged by mildew.Cleaning Cloth For Eyeglasses, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Packaging For Sunglasses-based E.I. du Pont de Nemours and Co.Spectacle Frame Box. This early research, headed by W.H. Carothers,Black Sunglasses Case Packaging, 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,Sunglasses Product Packaging. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Paper Packaging Box For Eyeglasses Frames,Corrugated PVC Suction 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.Clear And Transparent PVC Tubing, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.PVC Clear 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,General Purpose PVC Garden Hose. In this process, ethylene is the polymer, the chemical building block of polyester,Non-kink PVC Garden Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Home PVC Garden Hose. The four basic forms are filament,Flexible PVC Garden Hose, tow, and fiberfill. In the filament form,Anti-UV PVC Garden Hose, producing smooth-PVC Garden Hose.Torsion Free Garden Hose, filaments are cut to short,Reinforced Braided PVC Hose.Clear PVC Braided 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.Steel Wire Reinforced PVC 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-Non Toxic PVC Steel Wire Hose,Medium Duty PVC Lay Flat Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Pool Backwash PVC Layflat 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 Lay Flat Hose, which are usually round,Industrial PVC Steel Wire Suction Hose. The number of holes in the spinneret determines the size of the yarn,Gas 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,Oxygen and Acetylene Torch Welding 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,Oxygen Acetylene Hose.
• Vinyl Tubing,Welding Gas Hose. Also,PVC Suction Hose Pipe,Grey PVC Suction 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.

Textile Braided PVC Suction and Discharge Hose

Corrugated Clear Braided PVC Suction and Transfer 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,Pneumatic PVC Air Hose. The rope-Non Torsion PVC Garden Hose.

Drawing tow

• 1 Newly-Green PVC Garden Hose.All-weather PVC Garden Hose.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)PVC Nylon Braided Hose.PVC Wire Vacuum Transfer Hose.

Cutting

• 4 Following heat setting,Anti-Static 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)Fiber Reinforced PVC Steel Wire Hose.Non Toxic PVC Steel Wire Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)PVC Fiber Reinforced Hose.

The Future

General Purpose PVC Lay Flat Hose,Blue PVC Layflat Hose's fastest-growing fiber.PVC Lay Flat Water Discharge 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,Lay Flat Irrigation Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Oxygen Acetylene Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Food Grade Crystal Clear Vinyl Tubing, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.