Polyester

Background

Tube Cutting Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Automatic Leak Testing Machine. In this reaction,Vacuum Brazing Furnace.Continuous Brazing Furnace.

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

History

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

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,Aluminum Welded Tube. In this process, ethylene is the polymer, the chemical building block of polyester,Radiator aluminum flat tube.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Aluminum intercooler rectangular tube. The four basic forms are filament,Composite condenser Tube, tow, and fiberfill. In the filament form,Heat Sink Aluminum Oil Cooler Tube, producing smooth-Aluminium Multi channel Tube.Extruded Radiator Tubes, filaments are cut to short,High frequency welded condenser tube.Aluminium Micro channel Tube. 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 Frequency Oil Cooler Tube.

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-Checker Rubber Floor Mat,Rubber Mat, is extruded through a slot to form long ribbons.

Drying

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

FKM Rubber Sheet

High Temperature Resistant Viton 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,Ozone Resistant Viton Rubber Sheet. The rope-Abrasion Resistance Sheet Rubber.

Drawing tow

• 1 Newly-Abrasion Resistance Rubber Sheet.Mining Rubber Sheets.

Crimping

• 2 Drawn tow is then fed into compression boxes,Mining Rubber Products, at a rate of 9-15 crimps per inch (3-6 per cm).Nitrile Rubber Sheet Supplier.

Setting

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

Cutting

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

The Future

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