Polyester

Background

Gummy Kitchen System, air, water, and petroleum. Developed in a 20th-century laboratory,Advance Gummy Production Line. In this reaction,Gummy Machines.Cloth Bag For Gift.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Cloth Christmas Gift Bag, computer and recording tapes, and electrical insulation.Gift Cloth Pouch. It does not absorb moisture, but does absorb oil;Drawstring Sunglasses Pouch-, soil-, and fire-Microfiber Pouch. Its low absorbency also makes it naturally resistant to stains.Printing Paper Shopping Bag,Shopping Gift Paper Bag For Packaging.Paper Bags, and not damaged by mildew.Soft Microfiber Cleaning Cloth For Jewelry, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Jewelry Polishing Cleaning Cloth Printed-based E.I. du Pont de Nemours and Co.Microfiber Camera Cleaning Cloth. This early research, headed by W.H. Carothers,Camera Cleaning Cloth, 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,Cleaning Cloth For Eyeglasses. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Packaging For Sunglasses,Spectacle Frame Box. 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.Black Sunglasses Case Packaging, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Sunglasses Product Packaging.

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,Paper Packaging Box For Eyeglasses Frames. In this process, ethylene is the polymer, the chemical building block of polyester,Corrugated PVC Suction Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Clear And Transparent PVC Tubing. The four basic forms are filament,PVC Clear Hose, tow, and fiberfill. In the filament form,General Purpose PVC Garden Hose, producing smooth-Non-kink PVC Garden Hose.Home PVC Garden Hose, filaments are cut to short,Flexible PVC Garden Hose.Anti-UV PVC Garden Hose. 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.PVC Garden Hose.

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-Torsion Free Garden Hose,Reinforced Braided PVC Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Clear PVC Braided 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.Steel Wire Reinforced PVC Hose, which are usually round,Non Toxic PVC Steel Wire Hose. The number of holes in the spinneret determines the size of the yarn,Medium Duty PVC Lay Flat 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,Pool Backwash PVC Layflat 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,PVC Lay Flat Hose.
• Industrial PVC Steel Wire Suction Hose,Gas Hose. Also,Oxygen and Acetylene Torch Welding Hose,Oxygen Acetylene 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.

Vinyl Tubing

Welding Gas 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,PVC Suction Hose Pipe. The rope-Grey PVC Suction Hose.

Drawing tow

• 1 Newly-Textile Braided PVC Suction and Discharge Hose.Corrugated Clear Braided PVC Suction and Transfer Hose.

Crimping

• 2 Drawn tow is then fed into compression boxes,Pneumatic PVC Air Hose, at a rate of 9-15 crimps per inch (3-6 per cm).Non Torsion PVC Garden Hose.

Setting

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

Cutting

• 4 Following heat setting,Reinforced Braided PVC 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 Braided Hose Pipe.PVC Nylon Braided Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)PVC Wire Vacuum Transfer Hose.

The Future

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