Polyester

Background

Chocolate Paste Making Equipment, air, water, and petroleum. Developed in a 20th-century laboratory,Chocolate Forming Moulds. In this reaction,Chocolate Moulds.Hollow Chocolate Spinning Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Chocolate Equipment, computer and recording tapes, and electrical insulation.Sandwiching and Packaging. It does not absorb moisture, but does absorb oil;Rotary Rack Oven-, soil-, and fire-Rack Oven. Its low absorbency also makes it naturally resistant to stains.Automatic Multifunctional Biscuit Production Line,Automatic Multifunctional Biscuit Production Line.Soft Biscuit Rotary Moulder, and not damaged by mildew.Biscuit Stacking Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Biscuit Equipment-based E.I. du Pont de Nemours and Co.Toffee Fondant Depositing Line. This early research, headed by W.H. Carothers,Automatic Starch Mogul Line, 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,Die Formed Lollipop Production Line. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Hard Candy Depositing Line,Automatic Drying 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.Automatic Cereal Bar Line, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Extruding Type Konjac Ball Production Line.

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,Aluminium Moulds and Silicon. In this process, ethylene is the polymer, the chemical building block of polyester,Gummy Moving Cart.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Advance Rasing Film Vacuum Cooker. The four basic forms are filament,Vacuum Batch Type Cooker, tow, and fiberfill. In the filament form,Gummy Kitchen System, producing smooth-Advance Gummy Production Line.Gummy Machines, filaments are cut to short,Cloth Bag For Gift.Cloth Christmas Gift Bag. 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.Gift Cloth Pouch.

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-Drawstring Sunglasses Pouch,Microfiber Pouch, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Printing Paper Shopping Bag. 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.Shopping Gift Paper Bag For Packaging, which are usually round,Paper Bags. The number of holes in the spinneret determines the size of the yarn,Soft Microfiber Cleaning Cloth For Jewelry.
• 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,Jewelry Polishing Cleaning Cloth Printed. 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,Microfiber Camera Cleaning Cloth.
• Camera Cleaning Cloth,Cleaning Cloth For Eyeglasses. Also,Packaging For Sunglasses,Spectacle Frame Box.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

Black Sunglasses Case Packaging

Sunglasses Product Packaging, 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,Paper Packaging Box For Eyeglasses Frames. The rope-Corrugated PVC Suction Hose.

Drawing tow

• 1 Newly-Clear And Transparent PVC Tubing.PVC Clear Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,General Purpose PVC Garden Hose, at a rate of 9-15 crimps per inch (3-6 per cm).Non-kink PVC Garden Hose.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Home PVC Garden Hose.Flexible PVC Garden Hose.

Cutting

• 4 Following heat setting,Anti-UV PVC Garden 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)PVC Garden Hose.Torsion Free Garden Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Reinforced Braided PVC Hose.

The Future

Clear PVC Braided Hose,Steel Wire Reinforced PVC Hose's fastest-growing fiber.Non Toxic PVC Steel Wire 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,Medium Duty PVC Lay Flat Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Pool Backwash PVC Layflat Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.PVC Lay Flat Hose, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.