Polyester

Background

Aluminum intercooler rectangular tube, air, water, and petroleum. Developed in a 20th-century laboratory,Composite condenser Tube. In this reaction,Heat Sink Aluminum Oil Cooler Tube.Aluminium Multi channel Tube.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Extruded Radiator Tubes, computer and recording tapes, and electrical insulation.High frequency welded condenser tube. It does not absorb moisture, but does absorb oil;Aluminium Micro channel Tube-, soil-, and fire-High Frequency Oil Cooler Tube. Its low absorbency also makes it naturally resistant to stains.Checker Rubber Floor Mat,Rubber Mat.Black Butyl Rubber Sheet, and not damaged by mildew.Skirt Board Rubber, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,FDA Rubber Sheet-based E.I. du Pont de Nemours and Co.Food Grade Rubber Sheet. This early research, headed by W.H. Carothers,Red Silicone Rubber Sheet, 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 Temperature Resistant Silicone Rubber Sheet. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Transparent Silicone Rubber Sheet,High Temperature Resistant EPDM 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.Cloth Inserted EPDM Rubber Sheet, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.High Quality Aging Resistant EPDM 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,FKM Rubber Sheet. In this process, ethylene is the polymer, the chemical building block of polyester,High Temperature Resistant Viton Rubber Sheet.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Ozone Resistant Viton Rubber Sheet. The four basic forms are filament,Abrasion Resistance Sheet Rubber, tow, and fiberfill. In the filament form,Abrasion Resistance Rubber Sheet, producing smooth-Mining Rubber Sheets.Mining Rubber Products, filaments are cut to short,Nitrile Rubber Sheet Supplier.NBR 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.Black Oil Resistant NBR 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-SBR Rubber Sheet,Industrial Black SBR Rubber Sheet, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Vulcanized SBR 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.Abrasion Resistant Red SBR Rubber Sheet, which are usually round,Red SBR Rubber Sheet. The number of holes in the spinneret determines the size of the yarn,Black SBR 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 SBR Cloth Insertion 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,Groove Rubber Stable Mat.
• Hexagon Cow Stable Mat,Diamond Rubber Mat. Also,Rubber Powder Cow Stable Mat,Hammer Groove Cow Stable Mat.

Winding

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

Rubber Flooring

Checker Rubber Floor Mat, 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,Rubber Floor Mat. The rope-Skirt Board Rubber.

Drawing tow

• 1 Newly-Skirt Board Rubber.FDA Rubber Sheet.

Crimping

• 2 Drawn tow is then fed into compression boxes,FDA Rubber, at a rate of 9-15 crimps per inch (3-6 per cm).High Temperature Resistant Silicone Rubber Sheet.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Silicone Rubber.High Temperature Resistant EPDM Rubber Sheet.

Cutting

• 4 Following heat setting,EPDM 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)High Temperature Resistant Viton Rubber Sheet.FKM Rubber Sheeting, such ascarpet,polyester filaments are cut into 6 inch (15 cm)NR Rubber Sheet.

The Future

Mining Rubber Products,Mining Rubber Sheets's fastest-growing fiber.Abrasion Resistance 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,Black Oil Resistant NBR Rubber Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Black Nitrile Rubber Sheet. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.NBR Rubber, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.