Polyester

Background

High Purity Perfume/cosmetics/fragrance Fixative Musk Ambrette, air, water, and petroleum. Developed in a 20th-century laboratory,Light Magnesium Oxide CAS 1309-48-4. In this reaction,Caustic Soda.Caustic Soda CAS 1310-73-2.

Polyester is used in the manufacture of many products, including clothing, home furnishings,4-Aminophenol/Para-Aminophenol, computer and recording tapes, and electrical insulation.Sodium Hydrosulphite CAS 7775-14-6. It does not absorb moisture, but does absorb oil;Calcium lignosulphonate-, soil-, and fire-Calcium Chloride Dihydrate Anhydrous. Its low absorbency also makes it naturally resistant to stains.Choline Chloride Silica,Choline Chloride CAS.67-48-1.Feed Additives, and not damaged by mildew.Ferrous Gluconate CAS 299-29-6, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Glucose Potassium CAS 299-27-4-based E.I. du Pont de Nemours and Co.Food-Acidifiers. This early research, headed by W.H. Carothers,Gelatin CAS 9000-70-8, 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,Food Thickener. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Lactose powder CAS 63-42-3,Potassium Sorbate CAS 24634-61-5. 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.Sodium Benzoate CAS 532-32-1, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Ethyl Vanillin CAS 121-32-4.

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,Grooving Machine for Spiral Wound Gasket Outer Ring. In this process, ethylene is the polymer, the chemical building block of polyester,Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket. The four basic forms are filament,V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket, tow, and fiberfill. In the filament form,V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket, producing smooth-Spiral Wound Gasket Ring Making machine.Expanded PTFE Tape For Spiral Wound Gasket, filaments are cut to short,Flexible Graphite Tape Filler For Making Spiral Wound Gasket.Crinkled Graphite Tape with adhesive. 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.SS304 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket.

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-SS316 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket,Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket. 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.V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket, which are usually round,V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket. The number of holes in the spinneret determines the size of the yarn,Crinkled Flexible Graphite Tape.
• 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,V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket. 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,Full Automatic Camprofile Grooving Gasket Making Machine.
• Camprofile Gasket Grooving Machine,Automatic Argon Arc Metal Ring Joint Welding Machine. Also,Polishing Machine For Spiral Wound Gasket Metal Ring,Spiral Wound Gasket Outer Ring Grooving Machine.

Winding

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

Full Automatic Spiral Wound Gasket Winding Machine

Automatic Winding Machine For Making Spiral Wound Gasket, 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,Small Size Winding Machine for Spiral Wound Gasket. The rope-Deep Drawing Tooling.

Drawing tow

• 1 Newly-Copper Metal Spinning Spare Parts.Progressive Die Stamping Process Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,Progressive Die Stamping Riveting Parts, at a rate of 9-15 crimps per inch (3-6 per cm).Progressive Die Stamping Spare Parts.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Progressive Die Stamping.Single Die Stamping Spare Parts.

Cutting

• 4 Following heat setting,Single Die Metal Stamping Parts. 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)Single Die Stamping Drawing Parts.Single Die Metal Stamping Fabrication, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Single Die Stamping Riveting Parts.

The Future

Alloy Steel Sheet Metal Laser Cutting Spare Parts,Carbon Steel Sheet Metal Laser Cutting Components's fastest-growing fiber.Sheet Metal Laser Cutting. 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,Bending Corrugated Sheet Metal Parts, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Air Bending Sheet Metal Processing. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Sheet Metal U Bending Components, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.