Polyester

Background

Stone Paper Soft, air, water, and petroleum. Developed in a 20th-century laboratory,Full Automatic Marshmallow Production Line. In this reaction,Deposited Marshmallow Line.Full Automatic Extruded Marshmallow Production Line.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Popping Boba Line, computer and recording tapes, and electrical insulation.Chocolate Blocks Guitar Cutter. It does not absorb moisture, but does absorb oil;Chocolate Slicing Machine-, soil-, and fire-Small Chocolate Machine. Its low absorbency also makes it naturally resistant to stains.Chocolate Enrobing Line,Chocolate Tempering Machine.Chocolate Blocks Crusher, and not damaged by mildew.Chocolate Paste Making Equipment, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Chocolate Forming Moulds-based E.I. du Pont de Nemours and Co.Chocolate Moulds. This early research, headed by W.H. Carothers,Hollow Chocolate Spinning Machine, 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,Chocolate Equipment. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Sandwiching and Packaging,Rotary Rack Oven. 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.Rack Oven, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Automatic Multifunctional Biscuit 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,Automatic Multifunctional Biscuit Production Line. In this process, ethylene is the polymer, the chemical building block of polyester,Soft Biscuit Rotary Moulder.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Biscuit Stacking Machine. The four basic forms are filament,Biscuit Equipment, tow, and fiberfill. In the filament form,Toffee Fondant Depositing Line, producing smooth-Automatic Starch Mogul Line.Die Formed Lollipop Production Line, filaments are cut to short,Hard Candy Depositing Line.Automatic Drying System. 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.Automatic Cereal Bar Line.

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-Extruding Type Konjac Ball Production Line,Aluminium Moulds and Silicon, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Gummy Moving Cart. 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.Advance Rasing Film Vacuum Cooker, which are usually round,Vacuum Batch Type Cooker. The number of holes in the spinneret determines the size of the yarn,Gummy Kitchen System.
• 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,Advance Gummy Production Line. 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,Gummy Machines.
• Cloth Bag For Gift,Cloth Christmas Gift Bag. Also,Gift Cloth Pouch,Drawstring Sunglasses Pouch.

Winding

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

Microfiber Pouch

Printing Paper Shopping Bag, 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,Shopping Gift Paper Bag For Packaging. The rope-Paper Bags.

Drawing tow

• 1 Newly-Soft Microfiber Cleaning Cloth For Jewelry.Jewelry Polishing Cleaning Cloth Printed.

Crimping

• 2 Drawn tow is then fed into compression boxes,Microfiber Camera Cleaning Cloth, at a rate of 9-15 crimps per inch (3-6 per cm).Camera Cleaning Cloth.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Cleaning Cloth For Eyeglasses.Packaging For Sunglasses.

Cutting

• 4 Following heat setting,Spectacle Frame Box. 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)Black Sunglasses Case Packaging.Sunglasses Product Packaging, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Paper Packaging Box For Eyeglasses Frames.

The Future

Corrugated PVC Suction Hose,Clear And Transparent PVC Tubing's fastest-growing fiber.PVC Clear 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,General Purpose PVC Garden Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Non-kink PVC Garden Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Home 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.