Polyester

Background

Automatic Drying System, air, water, and petroleum. Developed in a 20th-century laboratory,Automatic Cereal Bar Line. In this reaction,Extruding Type Konjac Ball Production Line.Aluminium Moulds and Silicon.

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

History

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

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,Microfiber Camera Cleaning Cloth. In this process, ethylene is the polymer, the chemical building block of polyester,Camera Cleaning Cloth.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Cleaning Cloth For Eyeglasses. The four basic forms are filament,Packaging For Sunglasses, tow, and fiberfill. In the filament form,Spectacle Frame Box, producing smooth-Black Sunglasses Case Packaging.Sunglasses Product Packaging, filaments are cut to short,Paper Packaging Box For Eyeglasses Frames.Corrugated PVC Suction 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 And Transparent PVC Tubing.

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 Clear Hose,General Purpose PVC Garden Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Non-kink 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.Home PVC Garden Hose, which are usually round,Flexible PVC Garden Hose. The number of holes in the spinneret determines the size of the yarn,Anti-UV PVC Garden 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,PVC Garden 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,Torsion Free Garden Hose.
• Reinforced Braided PVC Hose,Clear PVC Braided Hose. Also,Steel Wire Reinforced PVC Hose,Non Toxic PVC Steel Wire 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.

Medium Duty PVC Lay Flat Hose

Pool Backwash PVC Layflat 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,PVC Lay Flat Hose. The rope-Industrial PVC Steel Wire Suction Hose.

Drawing tow

• 1 Newly-Gas Hose.Oxygen and Acetylene Torch Welding Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,Oxygen Acetylene Hose, at a rate of 9-15 crimps per inch (3-6 per cm).Vinyl Tubing.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Welding Gas Hose.PVC Suction Hose Pipe.

Cutting

• 4 Following heat setting,Grey PVC Suction 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)Textile Braided PVC Suction and Discharge Hose.Corrugated Clear Braided PVC Suction and Transfer Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Pneumatic PVC Air Hose.

The Future

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