Polyester

Background

Aluminium Moulds and Silicon, air, water, and petroleum. Developed in a 20th-century laboratory,Gummy Moving Cart. In this reaction,Advance Rasing Film Vacuum Cooker.Vacuum Batch Type Cooker.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Gummy Kitchen System, computer and recording tapes, and electrical insulation.Advance Gummy Production Line. It does not absorb moisture, but does absorb oil;Gummy Machines-, soil-, and fire-Cloth Bag For Gift. Its low absorbency also makes it naturally resistant to stains.Cloth Christmas Gift Bag,Gift Cloth Pouch.Drawstring Sunglasses Pouch, and not damaged by mildew.Microfiber Pouch, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Printing Paper Shopping Bag-based E.I. du Pont de Nemours and Co.Shopping Gift Paper Bag For Packaging. This early research, headed by W.H. Carothers,Paper Bags, 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,Soft Microfiber Cleaning Cloth For Jewelry. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Jewelry Polishing Cleaning Cloth Printed,Microfiber Camera Cleaning Cloth. 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.Camera Cleaning Cloth, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Cleaning Cloth For Eyeglasses.

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,Packaging For Sunglasses. In this process, ethylene is the polymer, the chemical building block of polyester,Spectacle Frame Box.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Black Sunglasses Case Packaging. The four basic forms are filament,Sunglasses Product Packaging, tow, and fiberfill. In the filament form,Paper Packaging Box For Eyeglasses Frames, producing smooth-Corrugated PVC Suction Hose.Clear And Transparent PVC Tubing, filaments are cut to short,PVC Clear Hose.General Purpose PVC Garden 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.Non-kink PVC Garden 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-Home PVC Garden Hose,Flexible PVC Garden Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Anti-UV PVC Garden 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 Garden Hose, which are usually round,Torsion Free Garden Hose. The number of holes in the spinneret determines the size of the yarn,Reinforced Braided PVC 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,Clear PVC Braided 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,Steel Wire Reinforced PVC Hose.
• Non Toxic PVC Steel Wire Hose,Medium Duty PVC Lay Flat Hose. Also,Pool Backwash PVC Layflat Hose,PVC Lay Flat 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.

Industrial PVC Steel Wire Suction Hose

Gas 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,Oxygen and Acetylene Torch Welding Hose. The rope-Oxygen Acetylene Hose.

Drawing tow

• 1 Newly-Vinyl Tubing.Welding Gas Hose.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Textile Braided PVC Suction and Discharge Hose.Corrugated Clear Braided PVC Suction and Transfer Hose.

Cutting

• 4 Following heat setting,Pneumatic PVC Air 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)Non Torsion PVC Garden Hose.Green PVC Garden Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)All-weather PVC Garden Hose.

The Future

Reinforced Braided PVC Hose,PVC Braided Hose Pipe's fastest-growing fiber.PVC Nylon Braided 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 Wire Vacuum Transfer Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Anti-Static PVC Steel Wire Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Fiber Reinforced PVC Steel Wire Hose, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.