Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Groove Rubber Stable Mat

Hexagon Cow Stable 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,Diamond Rubber Mat. The rope-Rubber Powder Cow Stable Mat.

Drawing tow

• 1 Newly-Hammer Groove Cow Stable Mat.Rubber Flooring.

Crimping

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

Setting

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

Cutting

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

The Future

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