Polyester

Background

Soft Biscuit Rotary Moulder, air, water, and petroleum. Developed in a 20th-century laboratory,Biscuit Stacking Machine. In this reaction,Biscuit Equipment.Toffee Fondant Depositing Line.

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

History

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

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,Drawstring Sunglasses Pouch. In this process, ethylene is the polymer, the chemical building block of polyester,Microfiber Pouch.

The Manufacturing
Process

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

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-Packaging For Sunglasses,Spectacle Frame Box, is extruded through a slot to form long ribbons.

Drying

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

Anti-UV PVC Garden Hose

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,Torsion Free Garden Hose. The rope-Reinforced Braided PVC Hose.

Drawing tow

• 1 Newly-Clear PVC Braided Hose.Steel Wire Reinforced PVC Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,Non Toxic PVC Steel Wire Hose, at a rate of 9-15 crimps per inch (3-6 per cm).Medium Duty PVC Lay Flat Hose.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Pool Backwash PVC Layflat Hose.PVC Lay Flat Hose.

Cutting

• 4 Following heat setting,Industrial PVC Steel Wire Suction 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)Gas Hose.Oxygen and Acetylene Torch Welding Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Oxygen Acetylene Hose.

The Future

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