Polyester

Background

Sandwiching and Packaging, air, water, and petroleum. Developed in a 20th-century laboratory,Rotary Rack Oven. In this reaction,Rack Oven.Automatic Multifunctional Biscuit Production Line.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Automatic Multifunctional Biscuit Production Line, computer and recording tapes, and electrical insulation.Soft Biscuit Rotary Moulder. It does not absorb moisture, but does absorb oil;Biscuit Stacking Machine-, soil-, and fire-Biscuit Equipment. Its low absorbency also makes it naturally resistant to stains.Toffee Fondant Depositing Line,Automatic Starch Mogul Line.Die Formed Lollipop Production Line, and not damaged by mildew.Hard Candy Depositing Line, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Automatic Drying System-based E.I. du Pont de Nemours and Co.Automatic Cereal Bar Line. This early research, headed by W.H. Carothers,Extruding Type Konjac Ball Production Line, 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,Aluminium Moulds and Silicon. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Gummy Moving Cart,Advance Rasing Film Vacuum Cooker. 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.Vacuum Batch Type Cooker, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Gummy Kitchen System.

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,Advance Gummy Production Line. In this process, ethylene is the polymer, the chemical building block of polyester,Gummy Machines.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Cloth Bag For Gift. The four basic forms are filament,Cloth Christmas Gift Bag, tow, and fiberfill. In the filament form,Gift Cloth Pouch, producing smooth-Drawstring Sunglasses Pouch.Microfiber Pouch, filaments are cut to short,Printing Paper Shopping Bag.Shopping Gift Paper Bag For Packaging. 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.Paper Bags.

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-Soft Microfiber Cleaning Cloth For Jewelry,Jewelry Polishing Cleaning Cloth Printed, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Microfiber Camera Cleaning Cloth. 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.Camera Cleaning Cloth, which are usually round,Cleaning Cloth For Eyeglasses. The number of holes in the spinneret determines the size of the yarn,Packaging For Sunglasses.
• 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,Spectacle Frame Box. 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,Black Sunglasses Case Packaging.
• Sunglasses Product Packaging,Paper Packaging Box For Eyeglasses Frames. Also,Corrugated PVC Suction Hose,Clear And Transparent PVC Tubing.

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 Clear Hose

General Purpose PVC Garden 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,Non-kink PVC Garden Hose. The rope-Home PVC Garden Hose.

Drawing tow

• 1 Newly-Flexible PVC Garden Hose.Anti-UV PVC Garden Hose.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Steel Wire Reinforced PVC 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)Non Toxic PVC Steel Wire Hose.Medium Duty PVC Lay Flat Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Pool Backwash PVC Layflat Hose.

The Future

PVC Lay Flat Hose,Industrial PVC Steel Wire Suction Hose's fastest-growing fiber.Gas 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,Oxygen and Acetylene Torch Welding Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Oxygen Acetylene Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Vinyl Tubing, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.