Polyester

Background

Graphite Die-formed Rings, air, water, and petroleum. Developed in a 20th-century laboratory,Graphite Fiber Braided Gland Packing. In this reaction,Graphite PTFE Filament Packing.Expanded PTFE Spiral Wound Gasket Filler Material.

Polyester is used in the manufacture of many products, including clothing, home furnishings,PTFE Yarn, computer and recording tapes, and electrical insulation.PTFE Porous Membrane. It does not absorb moisture, but does absorb oil;PTFE Membranes-, soil-, and fire-Expanded PTFE Sheet. Its low absorbency also makes it naturally resistant to stains.PTFE Sheets,PTFE Packing.Expanded PTFE Gasket, and not damaged by mildew.Pipe Thread Sealing Cord, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,PTFE Gaskets-based E.I. du Pont de Nemours and Co.Tanged Metal Reinforced Graphite Gasket. This early research, headed by W.H. Carothers,Tanged Metal Reinforced Graphite Gasket, 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,Graphite Gasket Reinforced With Metal Mesh. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Graphite Gasket Reinforced With Metal Foil,Pure Expanded Graphite Gasket. 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.Pure Expanded Graphite Gasket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Sintered Neodymium Iron Boron NdFeB 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,Industrial Magnets. In this process, ethylene is the polymer, the chemical building block of polyester,Oil Filter Magnets.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Magnetic Filtration. The four basic forms are filament,Magnetic DC Electric Motors, tow, and fiberfill. In the filament form,Magnetic Separation, producing smooth-Magnetic Hook Set.Sintered Neodymium Magnetic Hook Assembly, filaments are cut to short,Pot Magnet Assemblies.Rare Earth Powerful Permanent NdFeB Neodymium Magnet with Hole. 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.Strong Neodymium Magnets.

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-Block Strong Neodymium Magnets,Irregular Shape Neodymium Magnets, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Rare Earth Permanent Magnets. 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.Permanent Magnet Rotors, which are usually round,Cotton Tape. The number of holes in the spinneret determines the size of the yarn,High Density Double Sided Cloth 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,Construction 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,Cloth Tapes.
• Strong Based Double Sided Tape,High Density Double Sided Rubber Cloth Tape. Also,PET Tape,Oily Double Sided 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.

Double Sided Tape For Embroidery

Double Sided Tapes, 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,House Decoration Masking Tape. The rope-Wig Tape.

Drawing tow

• 1 Newly-Plastic Spraying Tape.Masking Tapes.

Crimping

• 2 Drawn tow is then fed into compression boxes,Printed Packing Tape, at a rate of 9-15 crimps per inch (3-6 per cm).Printing Tape.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Grid Kraft Tape.Eco-Friendly Paper Packing Tape.

Cutting

• 4 Following heat setting,Self Adhesive Kraft Paper Tape. 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)LOGO Tape.Sticky Lint Roller Tape, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Handled Sticky Roller.

The Future

Pet Stick Grip Roller Tape,Sticky Roller Mop Refill's fastest-growing fiber.Pet Hair Sticky Remover. 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,FG53 SERIES IP65 LED TRI-PROOF LAMP, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,FG55 SERIES IP65 LED TRI-PROOF LAMP. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.FG06 SERIES IP65 LED WATERPROOF LAMP, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.