Polyester

Background

Automatic Cereal Bar Line, air, water, and petroleum. Developed in a 20th-century laboratory,Extruding Type Konjac Ball Production Line. In this reaction,Aluminium Moulds and Silicon.Gummy Moving Cart.

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

History

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

The Manufacturing
Process

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

Drying

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

Pool Backwash PVC Layflat Hose

PVC Lay Flat 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,Industrial PVC Steel Wire Suction Hose. The rope-Gas Hose.

Drawing tow

• 1 Newly-Oxygen and Acetylene Torch Welding Hose.Oxygen Acetylene Hose.

Crimping

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

Setting

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

Cutting

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

The Future

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