Polyester

Background

Die Formed Lollipop Production Line, air, water, and petroleum. Developed in a 20th-century laboratory,Hard Candy Depositing Line. In this reaction,Automatic Drying System.Automatic Cereal Bar Line.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Extruding Type Konjac Ball Production Line, computer and recording tapes, and electrical insulation.Aluminium Moulds and Silicon. It does not absorb moisture, but does absorb oil;Gummy Moving Cart-, soil-, and fire-Advance Rasing Film Vacuum Cooker. Its low absorbency also makes it naturally resistant to stains.Vacuum Batch Type Cooker,Gummy Kitchen System.Advance Gummy Production Line, and not damaged by mildew.Gummy Machines, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Cloth Bag For Gift-based E.I. du Pont de Nemours and Co.Cloth Christmas Gift Bag. This early research, headed by W.H. Carothers,Gift Cloth Pouch, 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,Drawstring Sunglasses Pouch. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Microfiber Pouch,Printing Paper Shopping Bag. 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.Shopping Gift Paper Bag For Packaging, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Paper Bags.

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,Soft Microfiber Cleaning Cloth For Jewelry. In this process, ethylene is the polymer, the chemical building block of polyester,Jewelry Polishing Cleaning Cloth Printed.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Microfiber Camera Cleaning Cloth. The four basic forms are filament,Camera Cleaning Cloth, tow, and fiberfill. In the filament form,Cleaning Cloth For Eyeglasses, producing smooth-Packaging For Sunglasses.Spectacle Frame Box, filaments are cut to short,Black Sunglasses Case Packaging.Sunglasses Product Packaging. 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.Paper Packaging Box For Eyeglasses Frames.

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-Corrugated PVC Suction Hose,Clear And Transparent PVC Tubing, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,PVC Clear Hose. 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.General Purpose PVC Garden Hose, which are usually round,Non-kink PVC Garden Hose. The number of holes in the spinneret determines the size of the yarn,Home PVC Garden 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,Flexible PVC Garden Hose. 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,Anti-UV PVC Garden Hose.
• PVC Garden Hose,Torsion Free Garden Hose. Also,Reinforced Braided PVC Hose,Clear PVC Braided 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.

Steel Wire Reinforced PVC Hose

Non Toxic PVC Steel Wire 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,Medium Duty PVC Lay Flat Hose. The rope-Pool Backwash PVC Layflat Hose.

Drawing tow

• 1 Newly-PVC Lay Flat Hose.Industrial PVC Steel Wire Suction Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,Gas Hose, at a rate of 9-15 crimps per inch (3-6 per cm).Oxygen and Acetylene Torch Welding Hose.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Oxygen Acetylene Hose.Vinyl Tubing.

Cutting

• 4 Following heat setting,Welding Gas 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 Suction Hose Pipe.Grey PVC Suction Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Textile Braided PVC Suction and Discharge Hose.

The Future

Corrugated Clear Braided PVC Suction and Transfer Hose,Pneumatic PVC Air Hose's fastest-growing fiber.Non Torsion 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,Green PVC Garden Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,All-weather PVC 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.