Polyester

Background

Rare Earth Powerful Permanent NdFeB Neodymium Magnet with Hole, air, water, and petroleum. Developed in a 20th-century laboratory,Strong Neodymium Magnets. In this reaction,Block Strong Neodymium Magnets.Irregular Shape Neodymium Magnets.

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

History

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

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,Printed Packing Tape. In this process, ethylene is the polymer, the chemical building block of polyester,Printing Tape.

The Manufacturing
Process

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

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 Hair Sticky Remover,FG53 SERIES IP65 LED TRI-PROOF LAMP, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,FG55 SERIES IP65 LED TRI-PROOF LAMP. 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.FG06 SERIES IP65 LED WATERPROOF LAMP, which are usually round,FB01A SERIES IP54 LED WATERPROOF LAMP. The number of holes in the spinneret determines the size of the yarn,FG11 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,FB02 SERIES IP20 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,FE05 SERIES IP65 LED WATERPROOF LAMP.
• FLD-A SERIES IP65 LED FLOOD LIGHT,Flood Light. Also,FE03 SERIES IP65 LED DUSTPROOF LAMP,FE05 SERIES IP65 LED DUSTPROOF 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.

FI81E SERIES IP65 LED DUSTPROOF LAMP

FI88E 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,FI89E SERIES IP65 LED DUSTPROOF LAMP. The rope-FG03 SEREIS IP67 LED DUSTPROOF LAMP.

Drawing tow

• 1 Newly-FG04 SERIES IP65 LED DUSTPROOF LAMP.FG06 SERIES IP65 LED DUSTPROOF LAMP.

Crimping

• 2 Drawn tow is then fed into compression boxes,FB01A SERIES IP54 LED DUSTPROOF LAMP, at a rate of 9-15 crimps per inch (3-6 per cm).FG11 SERIES IP65 LED DUSTPROOF LAMP.

Setting

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

Cutting

• 4 Following heat setting,Fluorescent Tri-Proof Light. 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)FE01 SERIES IP65 LED TRI-PROOF LAMP.FE03 SERIES IP65 LED TRI-PROOF LAMP, such ascarpet,polyester filaments are cut into 6 inch (15 cm)FI81E SERIES IP65 LED TRI-PROOF LAMP.

The Future

FG06 SERIES IP65 LED TRI-PROOF LAMP,FB02 SERIES IP20 LED TRI-PROOF LAMP's fastest-growing fiber.FI81 SERIES IP65 T8 LED TUBES FIXTURE. 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,FI82 SERIES IP65 T8 LED TUBES FIXTURE, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,FI88 SERIES IP65 T5 / T8 LED TUBES FIXTURE. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.FI89 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.