Polyester

Background

Jewelry Polishing Cleaning Cloth Printed, air, water, and petroleum. Developed in a 20th-century laboratory,Microfiber Camera Cleaning Cloth. In this reaction,Camera Cleaning Cloth.Cleaning Cloth For Eyeglasses.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Packaging For Sunglasses, computer and recording tapes, and electrical insulation.Spectacle Frame Box. It does not absorb moisture, but does absorb oil;Black Sunglasses Case Packaging-, soil-, and fire-Sunglasses Product Packaging. Its low absorbency also makes it naturally resistant to stains.Paper Packaging Box For Eyeglasses Frames,Corrugated PVC Suction Hose.Clear And Transparent PVC Tubing, and not damaged by mildew.PVC Clear Hose, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,General Purpose PVC Garden Hose-based E.I. du Pont de Nemours and Co.Non-kink PVC Garden Hose. This early research, headed by W.H. Carothers,Home PVC Garden 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,Flexible PVC Garden Hose. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Anti-UV PVC Garden Hose,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.Torsion Free Garden Hose, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Reinforced Braided PVC 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,Clear PVC Braided Hose. In this process, ethylene is the polymer, the chemical building block of polyester,Steel Wire Reinforced PVC Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Non Toxic PVC Steel Wire Hose. The four basic forms are filament,Medium Duty PVC Lay Flat Hose, tow, and fiberfill. In the filament form,Pool Backwash PVC Layflat Hose, producing smooth-PVC Lay Flat Hose.Industrial PVC Steel Wire Suction Hose, filaments are cut to short,Gas Hose.Oxygen and Acetylene Torch Welding 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.Oxygen Acetylene 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-Vinyl Tubing,Welding Gas Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,PVC Suction Hose Pipe. 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.Grey PVC Suction Hose, which are usually round,Textile Braided PVC Suction and Discharge Hose. The number of holes in the spinneret determines the size of the yarn,Corrugated Clear Braided PVC Suction and Transfer 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,Pneumatic PVC Air 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,Non Torsion PVC Garden Hose.
• Green PVC Garden Hose,All-weather PVC Garden Hose. Also,Reinforced Braided PVC Hose,PVC Braided 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.

PVC Nylon Braided Hose

PVC Wire Vacuum 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,Anti-Static PVC Steel Wire Hose. The rope-Fiber Reinforced PVC Steel Wire Hose.

Drawing tow

• 1 Newly-Non Toxic PVC Steel Wire Hose.PVC Fiber Reinforced Hose.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)PVC Lay Flat Water Discharge Hose.Lay Flat Irrigation Hose.

Cutting

• 4 Following heat setting,Oxygen Acetylene 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)Food Grade Crystal Clear Vinyl Tubing.Flexible PVC Vinyl Tubing, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Welding Gas Hose.

The Future

Grey PVC Suction Hose,Green PVC Suction Hose's fastest-growing fiber.Clear Orange Braid PVC Water Suction Discharge Transfer 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,Heavy Duty Fabric Reinforced PVC Suction and Discharge Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,PVC Suction Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.General Purpose PVC Garden Hose, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.