Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Flood Light

FE03 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,FE05 SERIES IP65 LED DUSTPROOF LAMP. The rope-FI81E SERIES IP65 LED DUSTPROOF LAMP.

Drawing tow

• 1 Newly-FI88E SERIES IP65 LED DUSTPROOF LAMP.FI89E SERIES IP65 LED DUSTPROOF LAMP.

Crimping

• 2 Drawn tow is then fed into compression boxes,FG03 SEREIS IP67 LED DUSTPROOF LAMP, at a rate of 9-15 crimps per inch (3-6 per cm).FG04 SERIES IP65 LED DUSTPROOF LAMP.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)FG06 SERIES IP65 LED DUSTPROOF LAMP.FB01A SERIES IP54 LED DUSTPROOF LAMP.

Cutting

• 4 Following heat setting,FG11 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)FB02 SERIES IP20 LED DUSTPROOF LAMP.Dustproof Light, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Fluorescent Tri-Proof Light.

The Future

FE01 SERIES IP65 LED TRI-PROOF LAMP,FE03 SERIES IP65 LED TRI-PROOF LAMP's fastest-growing fiber.FI81E 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,FG06 SERIES IP65 LED TRI-PROOF LAMP, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,FB02 SERIES IP20 LED TRI-PROOF LAMP. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.FI81 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.