Polyester

Background

All Aluminum Radiator, air, water, and petroleum. Developed in a 20th-century laboratory,Cooling System. In this reaction,Aluminum Welded Tube.Radiator aluminum flat tube.

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

History

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

The Manufacturing
Process

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

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-Mining Rubber Products,Nitrile Rubber Sheet Supplier, is extruded through a slot to form long ribbons.

Drying

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

Hexagon Cow Stable Mat

Diamond Rubber 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 Powder Cow Stable Mat. The rope-Hammer Groove Cow Stable Mat.

Drawing tow

• 1 Newly-Rubber Flooring.Checker Rubber Floor Mat.

Crimping

• 2 Drawn tow is then fed into compression boxes,Rubber Floor Mat, at a rate of 9-15 crimps per inch (3-6 per cm).Skirt Board Rubber.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Skirt Board Rubber.FDA Rubber Sheet.

Cutting

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

The Future

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