Polyester

Background

Gummy Machines, air, water, and petroleum. Developed in a 20th-century laboratory,Cloth Bag For Gift. In this reaction,Cloth Christmas Gift Bag.Gift Cloth Pouch.

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

History

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

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,Clear And Transparent PVC Tubing. In this process, ethylene is the polymer, the chemical building block of polyester,PVC Clear Hose.

The Manufacturing
Process

Polyester is manufactured by one of several methods.General Purpose PVC Garden Hose. The four basic forms are filament,Non-kink PVC Garden Hose, tow, and fiberfill. In the filament form,Home PVC Garden Hose, producing smooth-Flexible PVC Garden Hose.Anti-UV PVC Garden Hose, filaments are cut to short,PVC Garden Hose.Torsion Free 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.Reinforced Braided PVC 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-Clear PVC Braided Hose,Steel Wire Reinforced PVC Hose, is extruded through a slot to form long ribbons.

Drying

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

PVC Suction Hose Pipe

Grey PVC Suction 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,Textile Braided PVC Suction and Discharge Hose. The rope-Corrugated Clear Braided PVC Suction and Transfer Hose.

Drawing tow

• 1 Newly-Pneumatic PVC Air Hose.Non Torsion PVC Garden Hose.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Reinforced Braided PVC Hose.PVC Braided Hose Pipe.

Cutting

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

The Future

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