Polyester

Background

Replacement Of R22 Refrigerant Gas R404a, air, water, and petroleum. Developed in a 20th-century laboratory,High Purity Refrigerant Gas R22. In this reaction,Chlorodifluoromethane Gas R22.Refrigerant Gas R22.

Polyester is used in the manufacture of many products, including clothing, home furnishings,99.9% Pure Refrigerant Gas R22, computer and recording tapes, and electrical insulation.Refrigerant Gas R22 In Disposable Cylinder. It does not absorb moisture, but does absorb oil;Refrigerant Gas R32 In Substitution For R22-, soil-, and fire-99.9% Purity Refrigerant Gas R134a. Its low absorbency also makes it naturally resistant to stains.Car Air Conditioner Refrigerant R134a Gas Cylinder,Tetrafluoroethane Refrigerant Gas R134a.Refrigerant Gas R134a, and not damaged by mildew.Forged Gate Valve, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Gate Valve-based E.I. du Pont de Nemours and Co.Globe Valve. This early research, headed by W.H. Carothers,Butterfly Valve, 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,Cast Steel Swing Check Valve 300-5000wog. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Stainless Steel Ball Check Valve,Forged Lift Check Valve Class 800#. 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.Swing Check Valve, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Threaded Check Valve.

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,Lcc Flanged Check Valve Class 150#. In this process, ethylene is the polymer, the chemical building block of polyester,Check Valve.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Grooved Ductile Iron Ball Valve. The four basic forms are filament,Grooved Ball Valve, tow, and fiberfill. In the filament form,Ductile Iron Ball Valve Full Port, producing smooth-2pc Cast Steel Ball Valve Full Port 2500-5000wog.Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog, filaments are cut to short,Bolted Ball Valve.Cast Steel Bolted Ball Valve Reduced Port 3000wog. 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.4c Bolted Ball Valve Full Port 5000wog.

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-Cast Steel Floating Flanged Ball Valve Class 150#,Cast Steel Floating Flanged Ball Valve Class 600#, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Stainless Steel Floating Flanged Ball Valve Class 150#. 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.Trunnion Ball Valve, which are usually round,Cast Iron Flanged Ball Valve. The number of holes in the spinneret determines the size of the yarn,Cast Iron Floating Flanged Ball Valve JIS 10k.
• 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,Ball Valve JIS 10k. 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,Ball Valve ANSI.
• Stainless Steel Floating Flanged Ball Valve Class,Cast Iron Floating Flanged Ball Valve JIS 16k. Also,Flnaged Ball Valve,Ball Valve.

Winding

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

Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles

To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch, 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,Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container. The rope-Gift Card Carrier Box.

Drawing tow

• 1 Newly-Hexagon Box.Paper Box With Custom Logo.

Crimping

• 2 Drawn tow is then fed into compression boxes,Round Paper Cardboard Gift Box, at a rate of 9-15 crimps per inch (3-6 per cm).Custom Luxury Jewelry Case.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Aluminum Foil Bag.Bags&Pouches.

Cutting

• 4 Following heat setting,Stone Paper Bags. 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)Stone Paper Books.Stone Paper Eco Friendly Tissue Holder, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Stone Carton Board 2mm.

The Future

Stone Carton Board 3mm,Stone Paper Carton Board's fastest-growing fiber.Stone Paper Film 60um. 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,Stone Paper Film, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Stone Card Paper 250um. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Stone Paper 180um, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.