Polyester

Background

Chocolate Equipment, air, water, and petroleum. Developed in a 20th-century laboratory,Sandwiching and Packaging. In this reaction,Rotary Rack Oven.Rack Oven.

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.Automatic Multifunctional Biscuit Production Line. It does not absorb moisture, but does absorb oil;Soft Biscuit Rotary Moulder-, soil-, and fire-Biscuit Stacking Machine. Its low absorbency also makes it naturally resistant to stains.Biscuit Equipment,Toffee Fondant Depositing Line.Automatic Starch Mogul Line, and not damaged by mildew.Die Formed Lollipop Production Line, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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

The Manufacturing
Process

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

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

Drying

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

Clear And Transparent PVC Tubing

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

Drawing tow

• 1 Newly-Home PVC Garden Hose.Flexible PVC Garden Hose.

Crimping

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

Setting

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

Cutting

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

The Future

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