Polyester

Background

Extruding Type Konjac Ball Production Line, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminium Moulds and Silicon. In this reaction,Gummy Moving Cart.Advance Rasing Film Vacuum Cooker.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Vacuum Batch Type Cooker, computer and recording tapes, and electrical insulation.Gummy Kitchen System. It does not absorb moisture, but does absorb oil;Advance Gummy Production Line-, soil-, and fire-Gummy Machines. Its low absorbency also makes it naturally resistant to stains.Cloth Bag For Gift,Cloth Christmas Gift Bag.Gift Cloth Pouch, and not damaged by mildew.Drawstring Sunglasses Pouch, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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,Cleaning Cloth For Eyeglasses. In this process, ethylene is the polymer, the chemical building block of polyester,Packaging For Sunglasses.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Spectacle Frame Box. The four basic forms are filament,Black Sunglasses Case Packaging, tow, and fiberfill. In the filament form,Sunglasses Product Packaging, producing smooth-Paper Packaging Box For Eyeglasses Frames.Corrugated PVC Suction Hose, filaments are cut to short,Clear And Transparent PVC Tubing.PVC Clear 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.General Purpose 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-Non-kink PVC Garden Hose,Home PVC Garden Hose, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Flexible PVC Garden 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.Anti-UV PVC Garden Hose, which are usually round,PVC Garden Hose. The number of holes in the spinneret determines the size of the yarn,Torsion Free 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,Reinforced Braided PVC 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,Clear PVC Braided Hose.
• Steel Wire Reinforced PVC Hose,Non Toxic PVC Steel Wire Hose. Also,Medium Duty PVC Lay Flat Hose,Pool Backwash PVC Layflat 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 Lay Flat Hose

Industrial PVC Steel Wire 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,Gas Hose. The rope-Oxygen and Acetylene Torch Welding Hose.

Drawing tow

• 1 Newly-Oxygen Acetylene Hose.Vinyl Tubing.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Grey PVC Suction Hose.Textile Braided PVC Suction and Discharge Hose.

Cutting

• 4 Following heat setting,Corrugated Clear Braided PVC Suction and Transfer 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)Pneumatic PVC Air Hose.Non Torsion PVC Garden Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Green PVC Garden Hose.

The Future

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