Polyester

Background

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

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

History

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

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

The Manufacturing
Process

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

Drying

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

Black SBR Rubber Sheet

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

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

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