Polyester

Background

Continuous Brazing Furnace, air, water, and petroleum. Developed in a 20th-century laboratory,Heat Treatment Furnace Brazing. In this reaction,Fin Stamping Machine.Radiator Fin Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Oil Cooler for Motorcycle, computer and recording tapes, and electrical insulation.Oil Cooler Radiator. It does not absorb moisture, but does absorb oil;Stainless Steel Oil Cooler-, soil-, and fire-Plate Fin Oil Cooler. Its low absorbency also makes it naturally resistant to stains.Tube Belt Oil Cooler,Universal Oil Cooler.Aluminum Bar and Plate Intercooler, and not damaged by mildew.Universal Front Mount Intercooler, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Aluminum Radiator Core-based E.I. du Pont de Nemours and Co.Auto Plastic Aluminum Radiator. This early research, headed by W.H. Carothers,Radiators with Plastic Tank, 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,All Aluminum Radiator. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cooling System,Aluminum Welded Tube. 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.Radiator aluminum flat tube, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Aluminum intercooler rectangular tube.

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,Composite condenser Tube. In this process, ethylene is the polymer, the chemical building block of polyester,Heat Sink Aluminum Oil Cooler Tube.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminium Multi channel Tube. The four basic forms are filament,Extruded Radiator Tubes, tow, and fiberfill. In the filament form,High frequency welded condenser tube, producing smooth-Aluminium Micro channel Tube.High Frequency Oil Cooler Tube, filaments are cut to short,Checker Rubber Floor Mat.Rubber Mat. 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.Black Butyl Rubber Sheet.

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-Skirt Board Rubber,FDA Rubber Sheet, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Food Grade Rubber Sheet. 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.Red Silicone Rubber Sheet, which are usually round,High Temperature Resistant Silicone Rubber Sheet. The number of holes in the spinneret determines the size of the yarn,Transparent Silicone Rubber Sheet.
• 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,High Temperature Resistant EPDM Rubber Sheet. 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,Cloth Inserted EPDM Rubber Sheet.
• High Quality Aging Resistant EPDM Rubber Sheet,FKM Rubber Sheet. Also,High Temperature Resistant Viton Rubber Sheet,Ozone Resistant Viton Rubber Sheet.

Winding

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

Abrasion Resistance Sheet Rubber

Abrasion Resistance Rubber Sheet, 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,Mining Rubber Sheets. The rope-Mining Rubber Products.

Drawing tow

• 1 Newly-Nitrile Rubber Sheet Supplier.NBR Rubber Sheet.

Crimping

• 2 Drawn tow is then fed into compression boxes,Black Oil Resistant NBR Rubber Sheet, at a rate of 9-15 crimps per inch (3-6 per cm).SBR Rubber Sheet.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Industrial Black SBR Rubber Sheet.Vulcanized SBR Rubber Sheet.

Cutting

• 4 Following heat setting,Abrasion Resistant Red SBR Rubber Sheet. 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)Red SBR Rubber Sheet.Black SBR Rubber Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Black SBR Cloth Insertion Rubber Sheet.

The Future

Groove Rubber Stable Mat,Hexagon Cow Stable Mat's fastest-growing fiber.Diamond Rubber Mat. 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,Rubber Powder Cow Stable Mat, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Hammer Groove Cow Stable Mat. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Rubber Flooring, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.