Polyester

Background

Hard Candy Depositing Line, air, water, and petroleum. Developed in a 20th-century laboratory,Automatic Drying System. In this reaction,Automatic Cereal Bar Line.Extruding Type Konjac Ball Production Line.

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

History

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

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,Jewelry Polishing Cleaning Cloth Printed. In this process, ethylene is the polymer, the chemical building block of polyester,Microfiber Camera Cleaning Cloth.

The Manufacturing
Process

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

Drying

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

Non Toxic PVC Steel Wire Hose

Medium Duty 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,Pool Backwash PVC Layflat Hose. The rope-PVC Lay Flat Hose.

Drawing tow

• 1 Newly-Industrial PVC Steel Wire Suction Hose.Gas Hose.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Vinyl Tubing.Welding Gas Hose.

Cutting

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

The Future

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