Polyester

Background

Microfiber Pouch, air, water, and petroleum. Developed in a 20th-century laboratory,Printing Paper Shopping Bag. In this reaction,Shopping Gift Paper Bag For Packaging.Paper Bags.

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

History

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

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Gas 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.Oxygen and Acetylene Torch Welding Hose, which are usually round,Oxygen Acetylene Hose. The number of holes in the spinneret determines the size of the yarn,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,Welding 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,PVC Suction Hose Pipe.
• Grey PVC Suction Hose,Textile Braided PVC Suction and Discharge Hose. Also,Corrugated Clear Braided PVC Suction and Transfer Hose,Pneumatic PVC Air 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.

Non Torsion PVC Garden Hose

Green 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,All-weather PVC Garden Hose. The rope-Reinforced Braided PVC Hose.

Drawing tow

• 1 Newly-PVC Braided Hose Pipe.PVC Nylon Braided Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,PVC Wire Vacuum Transfer Hose, at a rate of 9-15 crimps per inch (3-6 per cm).Anti-Static PVC Steel Wire Hose.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Fiber Reinforced PVC Steel Wire Hose.Non Toxic PVC Steel Wire Hose.

Cutting

• 4 Following heat setting,PVC Fiber Reinforced 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)General Purpose PVC Lay Flat Hose.Blue PVC Layflat Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)PVC Lay Flat Water Discharge Hose.

The Future

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