Polyester

Background

Food Grade Rubber Sheet, air, water, and petroleum. Developed in a 20th-century laboratory,Red Silicone Rubber Sheet. In this reaction,High Temperature Resistant Silicone Rubber Sheet.Transparent Silicone Rubber Sheet.

Polyester is used in the manufacture of many products, including clothing, home furnishings,High Temperature Resistant EPDM Rubber Sheet, computer and recording tapes, and electrical insulation.Cloth Inserted EPDM Rubber Sheet. It does not absorb moisture, but does absorb oil;High Quality Aging Resistant EPDM Rubber Sheet-, soil-, and fire-FKM Rubber Sheet. Its low absorbency also makes it naturally resistant to stains.High Temperature Resistant Viton Rubber Sheet,Ozone Resistant Viton Rubber Sheet.Abrasion Resistance Sheet Rubber, and not damaged by mildew.Abrasion Resistance Rubber Sheet, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Mining Rubber Sheets-based E.I. du Pont de Nemours and Co.Mining Rubber Products. This early research, headed by W.H. Carothers,Nitrile Rubber Sheet Supplier, 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,NBR Rubber Sheet. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Black Oil Resistant NBR Rubber Sheet,SBR 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.Industrial Black SBR Rubber Sheet, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Vulcanized SBR 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,Abrasion Resistant Red SBR Rubber Sheet. In this process, ethylene is the polymer, the chemical building block of polyester,Red SBR Rubber Sheet.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Black SBR Rubber Sheet. The four basic forms are filament,Black SBR Cloth Insertion Rubber Sheet, tow, and fiberfill. In the filament form,Groove Rubber Stable Mat, producing smooth-Hexagon Cow Stable Mat.Diamond Rubber Mat, filaments are cut to short,Rubber Powder Cow Stable Mat.Hammer Groove Cow Stable Mat. 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.Rubber Flooring.

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-Checker Rubber Floor Mat,Rubber Floor Mat, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Skirt Board Rubber. 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.Skirt Board Rubber, which are usually round,FDA Rubber Sheet. The number of holes in the spinneret determines the size of the yarn,FDA Rubber.
• 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,High Temperature Resistant Silicone 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,Silicone Rubber.
• High Temperature Resistant EPDM Rubber Sheet,EPDM Rubber. Also,High Temperature Resistant Viton Rubber Sheet,FKM Rubber Sheeting.

Winding

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

NR Rubber Sheet

Mining Rubber Products, 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,Mining Rubber Sheets. The rope-Abrasion Resistance Rubber Sheet.

Drawing tow

• 1 Newly-Black Oil Resistant NBR Rubber Sheet.Black Nitrile Rubber Sheet.

Crimping

• 2 Drawn tow is then fed into compression boxes,NBR Rubber, at a rate of 9-15 crimps per inch (3-6 per cm).Black SBR Cloth Insertion Rubber Sheet.

Setting

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

Cutting

• 4 Following heat setting,Industrial Black SBR 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)SBR Rubber Sheet.SBR Rubber, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Syringe Injector.

The Future

concrete repair injection,epoxy injection packer's fastest-growing fiber.Steel Mechanical Injection Packer. 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,aluminum injection packer, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,pu injection pump. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.polyurethane injection pump, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.