Polyester

Background

Automatic Multifunctional Biscuit Production Line, air, water, and petroleum. Developed in a 20th-century laboratory,Automatic Multifunctional Biscuit Production Line. In this reaction,Soft Biscuit Rotary Moulder.Biscuit Stacking Machine.

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

History

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

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

The Manufacturing
Process

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

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-Camera Cleaning Cloth,Cleaning Cloth For Eyeglasses, is extruded through a slot to form long ribbons.

Drying

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

Home PVC Garden Hose

Flexible 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,Anti-UV PVC Garden Hose. The rope-PVC Garden Hose.

Drawing tow

• 1 Newly-Torsion Free Garden Hose.Reinforced Braided PVC Hose.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Non Toxic PVC Steel Wire Hose.Medium Duty PVC Lay Flat Hose.

Cutting

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

The Future

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