Polyester

Background

Food Grade Sunflower Lecithin, air, water, and petroleum. Developed in a 20th-century laboratory,Natural Lecithin. In this reaction,Food Grade Sodium Saccharin 8-12 mesh.Sodium Saccharin 5-8 MESH.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Sodium Saccharin BP/USP/GMP, computer and recording tapes, and electrical insulation.Sodium Saccharin CAS 6155-57-3. It does not absorb moisture, but does absorb oil;Insoluble Saccharin CAS 81-07-2-, soil-, and fire-Sodium Saccharin 20-40 mesh. Its low absorbency also makes it naturally resistant to stains.Sodium Saccharin for Food and Beverage,Soda Ash CAS 144-55-8.100% Natural Musk Ketone Powder, and not damaged by mildew.High Purity Perfume/cosmetics/fragrance Fixative Musk Ambrette, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Light Magnesium Oxide CAS 1309-48-4-based E.I. du Pont de Nemours and Co.Caustic Soda. This early research, headed by W.H. Carothers,Caustic Soda CAS 1310-73-2, 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 1946,4-Aminophenol/Para-Aminophenol. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Sodium Hydrosulphite CAS 7775-14-6,Calcium lignosulphonate. 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.Calcium Chloride Dihydrate Anhydrous, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Choline Chloride Silica.

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,Choline Chloride CAS.67-48-1. In this process, ethylene is the polymer, the chemical building block of polyester,Feed Additives.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Ferrous Gluconate CAS 299-29-6. The four basic forms are filament,Glucose Potassium CAS 299-27-4, tow, and fiberfill. In the filament form,Food-Acidifiers, producing smooth-Gelatin CAS 9000-70-8.Food Thickener, filaments are cut to short,Lactose powder CAS 63-42-3.Potassium Sorbate CAS 24634-61-5. 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.Sodium Benzoate CAS 532-32-1.

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-Ethyl Vanillin CAS 121-32-4,Grooving Machine for Spiral Wound Gasket Outer Ring, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Flat 304L or 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.Flat 304L or 316L 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,V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket.
• 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,Spiral Wound Gasket Ring Making machine. 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,Expanded PTFE Tape For Spiral Wound Gasket.
• Flexible Graphite Tape Filler For Making Spiral Wound Gasket,Crinkled Graphite Tape with adhesive. Also,SS304 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket,SS316 Stainless Steel Metal Strip Tape for Inner and Out Ring of Spiral wound gasket.

Winding

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

Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket

V-Shape 316L Stainless Steel Strip Tape for 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,V-Shape 304 Stainless Steel Strip Tape for Spiral Wound Gasket. The rope-V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket.

Drawing tow

• 1 Newly-Crinkled Flexible Graphite Tape.V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket.

Crimping

• 2 Drawn tow is then fed into compression boxes,Full Automatic Camprofile Grooving Gasket Making Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Camprofile Gasket Grooving Machine.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Automatic Argon Arc Metal Ring Joint Welding Machine.Polishing Machine For Spiral Wound Gasket Metal Ring.

Cutting

• 4 Following heat setting,Spiral Wound Gasket Outer Ring Grooving Machine. 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)Full Automatic Spiral Wound Gasket Winding Machine.Automatic Winding Machine For Making Spiral Wound Gasket, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Small Size Winding Machine for Spiral Wound Gasket.

The Future

Deep Drawing Tooling,Copper Metal Spinning Spare Parts's fastest-growing fiber.Progressive Die Stamping Process Parts. 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,Progressive Die Stamping Riveting Parts, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Progressive Die Stamping Spare Parts. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Progressive Die Stamping, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.