Polyester

Background

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

Polyester is used in the manufacture of many products, including clothing, home furnishings,Sodium Saccharin 5-8 MESH, computer and recording tapes, and electrical insulation.Sodium Saccharin BP/USP/GMP. It does not absorb moisture, but does absorb oil;Sodium Saccharin CAS 6155-57-3-, soil-, and fire-Insoluble Saccharin CAS 81-07-2. Its low absorbency also makes it naturally resistant to stains.Sodium Saccharin 20-40 mesh,Sodium Saccharin for Food and Beverage.Soda Ash CAS 144-55-8, and not damaged by mildew.100% Natural Musk Ketone Powder, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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

The Manufacturing
Process

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

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-Sodium Benzoate CAS 532-32-1,Ethyl Vanillin CAS 121-32-4, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Grooving Machine for Spiral Wound Gasket Outer Ring. 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,Flat 304L or 316L Stainless Steel Strip Tape for Spiral Wound Gasket. The number of holes in the spinneret determines the size of the yarn,V-Shape 316L 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,V-Shape 304 Stainless Steel 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,Spiral Wound Gasket Ring Making machine.
• Expanded PTFE Tape For Spiral Wound Gasket,Flexible Graphite Tape Filler For Making Spiral Wound Gasket. Also,Crinkled Graphite Tape with adhesive,SS304 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.

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

Drawing tow

• 1 Newly-V-Shape 316L Stainless Steel Strip Tape for Spiral Wound Gasket.Crinkled Flexible Graphite Tape.

Crimping

• 2 Drawn tow is then fed into compression boxes,V-Shape Stainless Steel Metallic Strip Tape for Spiral Wound Gasket, at a rate of 9-15 crimps per inch (3-6 per cm).Full Automatic Camprofile Grooving Gasket Making Machine.

Setting

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

Cutting

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

The Future

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