Polyester

Background

Automatic Multifunctional Biscuit Production Line, air, water, and petroleum. Developed in a 20th-century laboratory,Soft Biscuit Rotary Moulder. In this reaction,Biscuit Stacking Machine.Biscuit Equipment.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Toffee Fondant Depositing Line, computer and recording tapes, and electrical insulation.Automatic Starch Mogul Line. It does not absorb moisture, but does absorb oil;Die Formed Lollipop Production Line-, soil-, and fire-Hard Candy Depositing Line. Its low absorbency also makes it naturally resistant to stains.Automatic Drying System,Automatic Cereal Bar Line.Extruding Type Konjac Ball Production Line, and not damaged by mildew.Aluminium Moulds and Silicon, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Gummy Moving Cart-based E.I. du Pont de Nemours and Co.Advance Rasing Film Vacuum Cooker. This early research, headed by W.H. Carothers,Vacuum Batch Type Cooker, 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,Gummy Kitchen System. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Advance Gummy Production Line,Gummy Machines. 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.Cloth Bag For Gift, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Cloth Christmas Gift Bag.

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,Gift Cloth Pouch. In this process, ethylene is the polymer, the chemical building block of polyester,Drawstring Sunglasses Pouch.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Microfiber Pouch. The four basic forms are filament,Printing Paper Shopping Bag, tow, and fiberfill. In the filament form,Shopping Gift Paper Bag For Packaging, producing smooth-Paper Bags.Soft Microfiber Cleaning Cloth For Jewelry, filaments are cut to short,Jewelry Polishing Cleaning Cloth Printed.Microfiber Camera Cleaning Cloth. 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.Camera Cleaning Cloth.

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-Cleaning Cloth For Eyeglasses,Packaging For Sunglasses, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Spectacle Frame Box. 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.Black Sunglasses Case Packaging, which are usually round,Sunglasses Product Packaging. The number of holes in the spinneret determines the size of the yarn,Paper Packaging Box For Eyeglasses Frames.
• 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,Corrugated PVC Suction 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,Clear And Transparent PVC Tubing.
• PVC Clear Hose,General Purpose PVC Garden Hose. Also,Non-kink PVC Garden Hose,Home PVC Garden 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.

Flexible PVC Garden Hose

Anti-UV 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,PVC Garden Hose. The rope-Torsion Free Garden Hose.

Drawing tow

• 1 Newly-Reinforced Braided PVC Hose.Clear PVC Braided Hose.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Medium Duty PVC Lay Flat Hose.Pool Backwash PVC Layflat Hose.

Cutting

• 4 Following heat setting,PVC Lay Flat 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)Industrial PVC Steel Wire Suction Hose.Gas Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Oxygen and Acetylene Torch Welding Hose.

The Future

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