Polyester

Background

Vacuum Batch Type Cooker, air, water, and petroleum. Developed in a 20th-century laboratory,Gummy Kitchen System. In this reaction,Advance Gummy Production Line.Gummy Machines.

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

History

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

The Manufacturing
Process

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

Drying

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

Oxygen Acetylene Hose

Vinyl Tubing, 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,Welding Gas Hose. The rope-PVC Suction Hose Pipe.

Drawing tow

• 1 Newly-Grey PVC Suction Hose.Textile Braided PVC Suction and Discharge Hose.

Crimping

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

Setting

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

Cutting

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

The Future

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