Polyester

Background

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

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

History

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

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 Clear Hose. In this process, ethylene is the polymer, the chemical building block of polyester,General Purpose PVC Garden Hose.

The Manufacturing
Process

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

Drying

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

Winding

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

Grey PVC Suction Hose

Textile Braided PVC Suction and Discharge 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,Corrugated Clear Braided PVC Suction and Transfer Hose. The rope-Pneumatic PVC Air Hose.

Drawing tow

• 1 Newly-Non Torsion PVC Garden Hose.Green PVC Garden Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,All-weather 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 Braided Hose Pipe.PVC Nylon Braided Hose.

Cutting

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

The Future

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