Polyester

Background

Pure Expanded Graphite Gasket, air, water, and petroleum. Developed in a 20th-century laboratory,Pure Expanded Graphite Gasket. In this reaction,Sintered Neodymium Iron Boron NdFeB Magnets.Industrial Magnets.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Oil Filter Magnets, computer and recording tapes, and electrical insulation.Magnetic Filtration. It does not absorb moisture, but does absorb oil;Magnetic DC Electric Motors-, soil-, and fire-Magnetic Separation. Its low absorbency also makes it naturally resistant to stains.Magnetic Hook Set,Sintered Neodymium Magnetic Hook Assembly.Pot Magnet Assemblies, and not damaged by mildew.Rare Earth Powerful Permanent NdFeB Neodymium Magnet with Hole, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Strong Neodymium Magnets-based E.I. du Pont de Nemours and Co.Block Strong Neodymium Magnets. This early research, headed by W.H. Carothers,Irregular Shape Neodymium Magnets, 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 Permanent Magnets. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Permanent Magnet Rotors,Cotton Tape. 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.High Density Double Sided Cloth Tape, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Construction Tape.

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 Tapes. In this process, ethylene is the polymer, the chemical building block of polyester,Strong Based Double Sided Tape.

The Manufacturing
Process

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

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-Masking Tapes,Printed Packing Tape, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Printing 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.Grid Kraft Tape, which are usually round,Eco-Friendly Paper Packing Tape. The number of holes in the spinneret determines the size of the yarn,Self Adhesive Kraft Paper 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,LOGO 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,Sticky Lint Roller Tape.
• Handled Sticky Roller,Pet Stick Grip Roller Tape. Also,Sticky Roller Mop Refill,Pet Hair Sticky Remover.

Winding

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

FG53 SERIES IP65 LED TRI-PROOF LAMP

FG55 SERIES IP65 LED TRI-PROOF LAMP, 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,FG06 SERIES IP65 LED WATERPROOF LAMP. The rope-FB01A SERIES IP54 LED WATERPROOF LAMP.

Drawing tow

• 1 Newly-FG11 SERIES IP65 LED WATERPROOF LAMP.FB02 SERIES IP20 LED WATERPROOF LAMP.

Crimping

• 2 Drawn tow is then fed into compression boxes,FE05 SERIES IP65 LED WATERPROOF LAMP, at a rate of 9-15 crimps per inch (3-6 per cm).FLD-A SERIES IP65 LED FLOOD LIGHT.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Flood Light.FE03 SERIES IP65 LED DUSTPROOF LAMP.

Cutting

• 4 Following heat setting,FE05 SERIES IP65 LED DUSTPROOF 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)FI81E SERIES IP65 LED DUSTPROOF LAMP.FI88E SERIES IP65 LED DUSTPROOF LAMP, such ascarpet,polyester filaments are cut into 6 inch (15 cm)FI89E SERIES IP65 LED DUSTPROOF LAMP.

The Future

FG03 SEREIS IP67 LED DUSTPROOF LAMP,FG04 SERIES IP65 LED DUSTPROOF LAMP's fastest-growing fiber.FG06 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,FB01A SERIES IP54 LED DUSTPROOF LAMP, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,FG11 SERIES IP65 LED DUSTPROOF LAMP. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.FB02 SERIES IP20 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.