Polyester

Background

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

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

History

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

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 Machines. In this process, ethylene is the polymer, the chemical building block of polyester,Cloth Bag For Gift.

The Manufacturing
Process

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

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

Drying

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

General Purpose PVC Garden Hose

Non-kink 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,Home PVC Garden Hose. The rope-Flexible PVC Garden Hose.

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

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