Polyester

Background

Universal Front Mount Intercooler, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminum Radiator Core. In this reaction,Auto Plastic Aluminum Radiator.Radiators with Plastic Tank.

Polyester is used in the manufacture of many products, including clothing, home furnishings,All Aluminum Radiator, computer and recording tapes, and electrical insulation.Cooling System. It does not absorb moisture, but does absorb oil;Aluminum Welded Tube-, soil-, and fire-Radiator aluminum flat tube. Its low absorbency also makes it naturally resistant to stains.Aluminum intercooler rectangular tube,Composite condenser Tube.Heat Sink Aluminum Oil Cooler Tube, and not damaged by mildew.Aluminium Multi channel Tube, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Extruded Radiator Tubes-based E.I. du Pont de Nemours and Co.High frequency welded condenser tube. This early research, headed by W.H. Carothers,Aluminium Micro channel Tube, 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,High Frequency Oil Cooler Tube. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Checker Rubber Floor Mat,Rubber Mat. 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.Black Butyl Rubber Sheet, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Skirt Board Rubber.

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,FDA Rubber Sheet. In this process, ethylene is the polymer, the chemical building block of polyester,Food Grade Rubber Sheet.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Red Silicone Rubber Sheet. The four basic forms are filament,High Temperature Resistant Silicone Rubber Sheet, tow, and fiberfill. In the filament form,Transparent Silicone Rubber Sheet, producing smooth-High Temperature Resistant EPDM Rubber Sheet.Cloth Inserted EPDM Rubber Sheet, filaments are cut to short,High Quality Aging Resistant EPDM Rubber Sheet.FKM Rubber Sheet. 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 Temperature Resistant Viton 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-Ozone Resistant Viton Rubber Sheet,Abrasion Resistance Sheet Rubber, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Abrasion Resistance 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.Mining Rubber Sheets, which are usually round,Mining Rubber Products. The number of holes in the spinneret determines the size of the yarn,Nitrile Rubber Sheet Supplier.
• 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,NBR 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,Black Oil Resistant NBR Rubber Sheet.
• SBR Rubber Sheet,Industrial Black SBR Rubber Sheet. Also,Vulcanized SBR Rubber Sheet,Abrasion Resistant Red SBR 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.

Red SBR Rubber Sheet

Black SBR 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,Black SBR Cloth Insertion Rubber Sheet. The rope-Groove Rubber Stable Mat.

Drawing tow

• 1 Newly-Hexagon Cow Stable Mat.Diamond Rubber Mat.

Crimping

• 2 Drawn tow is then fed into compression boxes,Rubber Powder Cow Stable Mat, at a rate of 9-15 crimps per inch (3-6 per cm).Hammer Groove Cow Stable Mat.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Rubber Flooring.Checker Rubber Floor Mat.

Cutting

• 4 Following heat setting,Rubber Floor Mat. 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)Skirt Board Rubber.Skirt Board Rubber, such ascarpet,polyester filaments are cut into 6 inch (15 cm)FDA Rubber Sheet.

The Future

FDA Rubber,High Temperature Resistant Silicone Rubber Sheet's fastest-growing fiber.Silicone Rubber. 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,High Temperature Resistant EPDM Rubber Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,EPDM Rubber. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.High Temperature Resistant Viton Rubber Sheet, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.