Polyester

Background

High frequency welded condenser tube, air, water, and petroleum. Developed in a 20th-century laboratory,Aluminium Micro channel Tube. In this reaction,High Frequency Oil Cooler Tube.Checker Rubber Floor Mat.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Rubber Mat, computer and recording tapes, and electrical insulation.Black Butyl Rubber Sheet. It does not absorb moisture, but does absorb oil;Skirt Board Rubber-, soil-, and fire-FDA Rubber Sheet. Its low absorbency also makes it naturally resistant to stains.Food Grade Rubber Sheet,Red Silicone Rubber Sheet.High Temperature Resistant Silicone Rubber Sheet, and not damaged by mildew.Transparent Silicone Rubber Sheet, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Groove Rubber Stable Mat. 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.Hexagon Cow Stable Mat, which are usually round,Diamond Rubber Mat. The number of holes in the spinneret determines the size of the yarn,Rubber Powder Cow Stable Mat.
• 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,Hammer Groove Cow Stable Mat. 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,Rubber Flooring.
• Checker Rubber Floor Mat,Rubber Floor Mat. Also,Skirt Board Rubber,Skirt Board Rubber.

Winding

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

FDA Rubber Sheet

FDA Rubber, 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,High Temperature Resistant Silicone Rubber Sheet. The rope-Silicone Rubber.

Drawing tow

• 1 Newly-High Temperature Resistant EPDM Rubber Sheet.EPDM Rubber.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Mining Rubber Sheets. 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)Abrasion Resistance Rubber Sheet.Black Oil Resistant NBR Rubber Sheet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Black Nitrile Rubber Sheet.

The Future

NBR Rubber,Black SBR Cloth Insertion Rubber Sheet's fastest-growing fiber.Red SBR 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,Vulcanized SBR Rubber Sheet, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Industrial Black SBR Rubber Sheet. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.SBR 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.