Polyester

Background

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

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

History

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

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,Cloth Bag For Gift. In this process, ethylene is the polymer, the chemical building block of polyester,Cloth Christmas Gift Bag.

The Manufacturing
Process

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

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-Microfiber Camera Cleaning Cloth,Camera Cleaning Cloth, is extruded through a slot to form long ribbons.

Drying

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

Non-kink PVC Garden Hose

Home 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,Flexible PVC Garden Hose. The rope-Anti-UV PVC Garden Hose.

Drawing tow

• 1 Newly-PVC Garden Hose.Torsion Free Garden Hose.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Steel Wire Reinforced PVC Hose.Non Toxic PVC Steel Wire Hose.

Cutting

• 4 Following heat setting,Medium Duty 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)Pool Backwash PVC Layflat Hose.PVC Lay Flat Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Industrial PVC Steel Wire Suction Hose.

The Future

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