Polyester

Background

Automatic Starch Mogul Line, air, water, and petroleum. Developed in a 20th-century laboratory,Die Formed Lollipop Production Line. In this reaction,Hard Candy Depositing Line.Automatic Drying System.

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

History

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

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,Paper Bags. In this process, ethylene is the polymer, the chemical building block of polyester,Soft Microfiber Cleaning Cloth For Jewelry.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Jewelry Polishing Cleaning Cloth Printed. The four basic forms are filament,Microfiber Camera Cleaning Cloth, tow, and fiberfill. In the filament form,Camera Cleaning Cloth, producing smooth-Cleaning Cloth For Eyeglasses.Packaging For Sunglasses, filaments are cut to short,Spectacle Frame Box.Black Sunglasses Case Packaging. 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.Sunglasses Product Packaging.

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-Paper Packaging Box For Eyeglasses Frames,Corrugated PVC Suction Hose, is extruded through a slot to form long ribbons.

Drying

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

Clear PVC Braided Hose

Steel Wire Reinforced PVC 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,Non Toxic PVC Steel Wire Hose. The rope-Medium Duty PVC Lay Flat Hose.

Drawing tow

• 1 Newly-Pool Backwash PVC Layflat Hose.PVC Lay Flat Hose.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Oxygen and Acetylene Torch Welding Hose.Oxygen Acetylene Hose.

Cutting

• 4 Following heat setting,Vinyl Tubing. 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)Welding Gas Hose.PVC Suction Hose Pipe, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Grey PVC Suction Hose.

The Future

Textile Braided PVC Suction and Discharge Hose,Corrugated Clear Braided PVC Suction and Transfer Hose's fastest-growing fiber.Pneumatic PVC Air 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,Non Torsion PVC Garden Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Green PVC Garden Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.All-weather 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.