Polyester

Background

Sintered Neodymium Magnetic Hook Assembly, air, water, and petroleum. Developed in a 20th-century laboratory,Pot Magnet Assemblies. In this reaction,Rare Earth Powerful Permanent NdFeB Neodymium Magnet with Hole.Strong Neodymium Magnets.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Printed Packing Tape. The four basic forms are filament,Printing Tape, tow, and fiberfill. In the filament form,Grid Kraft Tape, producing smooth-Eco-Friendly Paper Packing Tape.Self Adhesive Kraft Paper Tape, filaments are cut to short,LOGO Tape.Sticky Lint Roller 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.Handled Sticky Roller.

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-Pet Stick Grip Roller Tape,Sticky Roller Mop Refill, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Pet Hair Sticky Remover. 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.FG53 SERIES IP65 LED TRI-PROOF LAMP, which are usually round,FG55 SERIES IP65 LED TRI-PROOF LAMP. The number of holes in the spinneret determines the size of the yarn,FG06 SERIES IP65 LED WATERPROOF LAMP.
• 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,FB01A SERIES IP54 LED WATERPROOF 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,FG11 SERIES IP65 LED WATERPROOF LAMP.
• FB02 SERIES IP20 LED WATERPROOF LAMP,FE05 SERIES IP65 LED WATERPROOF LAMP. Also,FLD-A SERIES IP65 LED FLOOD LIGHT,Flood Light.

Winding

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

FE03 SERIES IP65 LED DUSTPROOF LAMP

FE05 SERIES IP65 LED DUSTPROOF 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,FI81E SERIES IP65 LED DUSTPROOF LAMP. The rope-FI88E SERIES IP65 LED DUSTPROOF LAMP.

Drawing tow

• 1 Newly-FI89E SERIES IP65 LED DUSTPROOF LAMP.FG03 SEREIS IP67 LED DUSTPROOF LAMP.

Crimping

• 2 Drawn tow is then fed into compression boxes,FG04 SERIES IP65 LED DUSTPROOF LAMP, at a rate of 9-15 crimps per inch (3-6 per cm).FG06 SERIES IP65 LED DUSTPROOF LAMP.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)FB01A SERIES IP54 LED DUSTPROOF LAMP.FG11 SERIES IP65 LED DUSTPROOF LAMP.

Cutting

• 4 Following heat setting,FB02 SERIES IP20 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)Dustproof Light.Fluorescent Tri-Proof Light, such ascarpet,polyester filaments are cut into 6 inch (15 cm)FE01 SERIES IP65 LED TRI-PROOF LAMP.

The Future

FE03 SERIES IP65 LED TRI-PROOF LAMP,FI81E SERIES IP65 LED TRI-PROOF LAMP's fastest-growing fiber.FG06 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,FB02 SERIES IP20 LED TRI-PROOF LAMP, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,FI81 SERIES IP65 T8 LED TUBES FIXTURE. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.FI82 SERIES IP65 T8 LED TUBES FIXTURE, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.