Polyester

Background

PTFE Membranes, air, water, and petroleum. Developed in a 20th-century laboratory,Expanded PTFE Sheet. In this reaction,PTFE Sheets.PTFE Packing.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Expanded PTFE Gasket, computer and recording tapes, and electrical insulation.Pipe Thread Sealing Cord. It does not absorb moisture, but does absorb oil;PTFE Gaskets-, soil-, and fire-Tanged Metal Reinforced Graphite Gasket. Its low absorbency also makes it naturally resistant to stains.Tanged Metal Reinforced Graphite Gasket,Graphite Gasket Reinforced With Metal Mesh.Graphite Gasket Reinforced With Metal Foil, and not damaged by mildew.Pure Expanded Graphite Gasket, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Pure Expanded Graphite Gasket-based E.I. du Pont de Nemours and Co.Sintered Neodymium Iron Boron NdFeB Magnets. This early research, headed by W.H. Carothers,Industrial 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,Oil Filter Magnets. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Magnetic Filtration,Magnetic DC Electric Motors. 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.Magnetic Separation, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Magnetic Hook Set.

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,Sintered Neodymium Magnetic Hook Assembly. In this process, ethylene is the polymer, the chemical building block of polyester,Pot Magnet Assemblies.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Rare Earth Powerful Permanent NdFeB Neodymium Magnet with Hole. The four basic forms are filament,Strong Neodymium Magnets, tow, and fiberfill. In the filament form,Block Strong Neodymium Magnets, producing smooth-Irregular Shape Neodymium Magnets.Rare Earth Permanent Magnets, filaments are cut to short,Permanent Magnet Rotors.Cotton 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.High Density Double Sided Cloth 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-Construction Tape,Cloth Tapes, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Strong Based Double Sided 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.High Density Double Sided Rubber Cloth Tape, which are usually round,PET Tape. The number of holes in the spinneret determines the size of the yarn,Oily Double Sided 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,Double Sided Tape For Embroidery. 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,Double Sided Tapes.
• House Decoration Masking Tape,Wig Tape. Also,Plastic Spraying Tape,Masking Tapes.

Winding

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

Printed Packing Tape

Printing Tape, 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,Grid Kraft Tape. The rope-Eco-Friendly Paper Packing Tape.

Drawing tow

• 1 Newly-Self Adhesive Kraft Paper Tape.LOGO Tape.

Crimping

• 2 Drawn tow is then fed into compression boxes,Sticky Lint Roller Tape, at a rate of 9-15 crimps per inch (3-6 per cm).Handled Sticky Roller.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Pet Stick Grip Roller Tape.Sticky Roller Mop Refill.

Cutting

• 4 Following heat setting,Pet Hair Sticky Remover. 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)FG53 SERIES IP65 LED TRI-PROOF LAMP.FG55 SERIES IP65 LED TRI-PROOF LAMP, such ascarpet,polyester filaments are cut into 6 inch (15 cm)FG06 SERIES IP65 LED WATERPROOF LAMP.

The Future

FB01A SERIES IP54 LED WATERPROOF LAMP,FG11 SERIES IP65 LED WATERPROOF LAMP's fastest-growing fiber.FB02 SERIES IP20 LED WATERPROOF 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,FE05 SERIES IP65 LED WATERPROOF LAMP, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,FLD-A SERIES IP65 LED FLOOD LIGHT. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Flood Light, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.