Polyester

Background

Chocolate Blocks Guitar Cutter, air, water, and petroleum. Developed in a 20th-century laboratory,Chocolate Slicing Machine. In this reaction,Small Chocolate Machine.Chocolate Enrobing Line.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Hard Candy Depositing Line. The four basic forms are filament,Automatic Drying System, tow, and fiberfill. In the filament form,Automatic Cereal Bar Line, producing smooth-Extruding Type Konjac Ball Production Line.Aluminium Moulds and Silicon, filaments are cut to short,Gummy Moving Cart.Advance Rasing Film Vacuum Cooker. 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.Vacuum Batch Type Cooker.

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-Gummy Kitchen System,Advance Gummy Production Line, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Gummy Machines. 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.Cloth Bag For Gift, which are usually round,Cloth Christmas Gift Bag. The number of holes in the spinneret determines the size of the yarn,Gift Cloth Pouch.
• 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,Drawstring Sunglasses Pouch. 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 Pouch.
• Printing Paper Shopping Bag,Shopping Gift Paper Bag For Packaging. Also,Paper Bags,Soft Microfiber Cleaning Cloth For Jewelry.

Winding

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

Jewelry Polishing Cleaning Cloth Printed

Microfiber Camera Cleaning Cloth, 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,Camera Cleaning Cloth. The rope-Cleaning Cloth For Eyeglasses.

Drawing tow

• 1 Newly-Packaging For Sunglasses.Spectacle Frame Box.

Crimping

• 2 Drawn tow is then fed into compression boxes,Black Sunglasses Case Packaging, at a rate of 9-15 crimps per inch (3-6 per cm).Sunglasses Product Packaging.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Paper Packaging Box For Eyeglasses Frames.Corrugated PVC Suction Hose.

Cutting

• 4 Following heat setting,Clear And Transparent PVC 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)PVC Clear Hose.General Purpose PVC Garden Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Non-kink PVC Garden Hose.

The Future

Home PVC Garden Hose,Flexible PVC Garden Hose's fastest-growing fiber.Anti-UV PVC Garden 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 Garden Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Torsion Free Garden Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Reinforced Braided PVC Hose, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.