Polyester

Background

Magnetic DC Electric Motors, air, water, and petroleum. Developed in a 20th-century laboratory,Magnetic Separation. In this reaction,Magnetic Hook Set.Sintered Neodymium Magnetic Hook Assembly.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Pot Magnet Assemblies, computer and recording tapes, and electrical insulation.Rare Earth Powerful Permanent NdFeB Neodymium Magnet with Hole. It does not absorb moisture, but does absorb oil;Strong Neodymium Magnets-, soil-, and fire-Block Strong Neodymium Magnets. Its low absorbency also makes it naturally resistant to stains.Irregular Shape Neodymium Magnets,Rare Earth Permanent Magnets.Permanent Magnet Rotors, and not damaged by mildew.Cotton Tape, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,High Density Double Sided Cloth Tape-based E.I. du Pont de Nemours and Co.Construction Tape. This early research, headed by W.H. Carothers,Cloth Tapes, 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,Strong Based Double Sided Tape. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.High Density Double Sided Rubber Cloth Tape,PET 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.Oily Double Sided Tape, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Double Sided Tape For Embroidery.

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,Double Sided Tapes. In this process, ethylene is the polymer, the chemical building block of polyester,House Decoration Masking Tape.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Wig Tape. The four basic forms are filament,Plastic Spraying Tape, tow, and fiberfill. In the filament form,Masking Tapes, producing smooth-Printed Packing Tape.Printing Tape, filaments are cut to short,Grid Kraft Tape.Eco-Friendly Paper Packing 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.Self Adhesive Kraft Paper 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-LOGO Tape,Sticky Lint Roller Tape, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Handled Sticky Roller. 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.Pet Stick Grip Roller Tape, which are usually round,Sticky Roller Mop Refill. The number of holes in the spinneret determines the size of the yarn,Pet Hair Sticky Remover.
• 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,FG53 SERIES IP65 LED TRI-PROOF LAMP. 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,FG55 SERIES IP65 LED TRI-PROOF LAMP.
• FG06 SERIES IP65 LED WATERPROOF LAMP,FB01A SERIES IP54 LED WATERPROOF LAMP. Also,FG11 SERIES IP65 LED WATERPROOF LAMP,FB02 SERIES IP20 LED WATERPROOF LAMP.

Winding

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

FE05 SERIES IP65 LED WATERPROOF LAMP

FLD-A SERIES IP65 LED FLOOD LIGHT, 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,Flood Light. The rope-FE03 SERIES IP65 LED DUSTPROOF LAMP.

Drawing tow

• 1 Newly-FE05 SERIES IP65 LED DUSTPROOF LAMP.FI81E SERIES IP65 LED DUSTPROOF LAMP.

Crimping

• 2 Drawn tow is then fed into compression boxes,FI88E SERIES IP65 LED DUSTPROOF LAMP, at a rate of 9-15 crimps per inch (3-6 per cm).FI89E SERIES IP65 LED DUSTPROOF LAMP.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)FG03 SEREIS IP67 LED DUSTPROOF LAMP.FG04 SERIES IP65 LED DUSTPROOF LAMP.

Cutting

• 4 Following heat setting,FG06 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)FB01A SERIES IP54 LED DUSTPROOF LAMP.FG11 SERIES IP65 LED DUSTPROOF LAMP, such ascarpet,polyester filaments are cut into 6 inch (15 cm)FB02 SERIES IP20 LED DUSTPROOF LAMP.

The Future

Dustproof Light,Fluorescent Tri-Proof Light's fastest-growing fiber.FE01 SERIES IP65 LED TRI-PROOF 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,FE03 SERIES IP65 LED TRI-PROOF LAMP, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,FI81E 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 TRI-PROOF LAMP, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.