Polyester

Background

Tanged Metal Reinforced Graphite Gasket, air, water, and petroleum. Developed in a 20th-century laboratory,Tanged Metal Reinforced Graphite Gasket. In this reaction,Graphite Gasket Reinforced With Metal Mesh.Graphite Gasket Reinforced With Metal Foil.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Pure Expanded Graphite Gasket, computer and recording tapes, and electrical insulation.Pure Expanded Graphite Gasket. It does not absorb moisture, but does absorb oil;Sintered Neodymium Iron Boron NdFeB Magnets-, soil-, and fire-Industrial Magnets. Its low absorbency also makes it naturally resistant to stains.Oil Filter Magnets,Magnetic Filtration.Magnetic DC Electric Motors, and not damaged by mildew.Magnetic Separation, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Magnetic Hook Set-based E.I. du Pont de Nemours and Co.Sintered Neodymium Magnetic Hook Assembly. This early research, headed by W.H. Carothers,Pot Magnet Assemblies, 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,Rare Earth Powerful Permanent NdFeB Neodymium Magnet with Hole. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Strong Neodymium Magnets,Block Strong Neodymium Magnets. 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.Irregular Shape Neodymium Magnets, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rare Earth Permanent Magnets.

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,Permanent Magnet Rotors. In this process, ethylene is the polymer, the chemical building block of polyester,Cotton Tape.

The Manufacturing
Process

Polyester is manufactured by one of several methods.High Density Double Sided Cloth Tape. The four basic forms are filament,Construction Tape, tow, and fiberfill. In the filament form,Cloth Tapes, producing smooth-Strong Based Double Sided Tape.High Density Double Sided Rubber Cloth Tape, filaments are cut to short,PET Tape.Oily Double Sided Tape. 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.Double Sided Tape For Embroidery.

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-Double Sided Tapes,House Decoration Masking Tape, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Wig Tape. 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.Plastic Spraying Tape, which are usually round,Masking Tapes. The number of holes in the spinneret determines the size of the yarn,Printed Packing Tape.
• 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,Printing Tape. 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,Grid Kraft Tape.
• Eco-Friendly Paper Packing Tape,Self Adhesive Kraft Paper Tape. Also,LOGO Tape,Sticky Lint Roller Tape.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

Handled Sticky Roller

Pet Stick Grip Roller Tape, 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,Sticky Roller Mop Refill. The rope-Pet Hair Sticky Remover.

Drawing tow

• 1 Newly-FG53 SERIES IP65 LED TRI-PROOF LAMP.FG55 SERIES IP65 LED TRI-PROOF LAMP.

Crimping

• 2 Drawn tow is then fed into compression boxes,FG06 SERIES IP65 LED WATERPROOF LAMP, at a rate of 9-15 crimps per inch (3-6 per cm).FB01A SERIES IP54 LED WATERPROOF LAMP.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)FG11 SERIES IP65 LED WATERPROOF LAMP.FB02 SERIES IP20 LED WATERPROOF LAMP.

Cutting

• 4 Following heat setting,FE05 SERIES IP65 LED WATERPROOF LAMP. 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)FLD-A SERIES IP65 LED FLOOD LIGHT.Flood Light, such ascarpet,polyester filaments are cut into 6 inch (15 cm)FE03 SERIES IP65 LED DUSTPROOF LAMP.

The Future

FE05 SERIES IP65 LED DUSTPROOF LAMP,FI81E SERIES IP65 LED DUSTPROOF LAMP's fastest-growing fiber.FI88E SERIES IP65 LED DUSTPROOF LAMP. 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,FI89E SERIES IP65 LED DUSTPROOF LAMP, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,FG03 SEREIS IP67 LED DUSTPROOF LAMP. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.FG04 SERIES IP65 LED DUSTPROOF LAMP, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.