Polyester

Background

Chocolate Enrobing Line, air, water, and petroleum. Developed in a 20th-century laboratory,Chocolate Tempering Machine. In this reaction,Chocolate Blocks Crusher.Chocolate Paste Making Equipment.

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

History

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

The Manufacturing
Process

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

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-Cloth Bag For Gift,Cloth Christmas Gift Bag, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Cleaning Cloth For Eyeglasses

Packaging For Sunglasses, 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,Spectacle Frame Box. The rope-Black Sunglasses Case Packaging.

Drawing tow

• 1 Newly-Sunglasses Product Packaging.Paper Packaging Box For Eyeglasses Frames.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Non-kink 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)Home PVC Garden Hose.Flexible PVC Garden Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Anti-UV PVC Garden Hose.

The Future

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