Polyester

Background

Cast Steel Swing Check Valve 300-5000wog, air, water, and petroleum. Developed in a 20th-century laboratory,Stainless Steel Ball Check Valve. In this reaction,Forged Lift Check Valve Class 800#.Swing Check Valve.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Threaded Check Valve, computer and recording tapes, and electrical insulation.Lcc Flanged Check Valve Class 150#. It does not absorb moisture, but does absorb oil;Check Valve-, soil-, and fire-Grooved Ductile Iron Ball Valve. Its low absorbency also makes it naturally resistant to stains.Grooved Ball Valve,Ductile Iron Ball Valve Full Port.2pc Cast Steel Ball Valve Full Port 2500-5000wog, and not damaged by mildew.Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Bolted Ball Valve-based E.I. du Pont de Nemours and Co.Cast Steel Bolted Ball Valve Reduced Port 3000wog. This early research, headed by W.H. Carothers,4c Bolted Ball Valve Full Port 5000wog, 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 Floating Flanged Ball Valve Class 150#. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cast Steel Floating Flanged Ball Valve Class 600#,Stainless Steel Floating Flanged Ball Valve Class 150#. 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.Trunnion Ball Valve, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Cast Iron Flanged Ball 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,Cast Iron Floating Flanged Ball Valve JIS 10k. In this process, ethylene is the polymer, the chemical building block of polyester,Ball Valve JIS 10k.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Ball Valve ANSI. The four basic forms are filament,Stainless Steel Floating Flanged Ball Valve Class, tow, and fiberfill. In the filament form,Cast Iron Floating Flanged Ball Valve JIS 16k, producing smooth-Flnaged Ball Valve.Ball Valve, filaments are cut to short,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. 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.Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container.

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-Gift Card Carrier Box,Hexagon Box, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Paper Box With Custom Logo. 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.Round Paper Cardboard Gift Box, which are usually round,Custom Luxury Jewelry Case. The number of holes in the spinneret determines the size of the yarn,Aluminum Foil Bag.
• 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,Bags&Pouches. 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,Stone Paper Bags.
• Stone Paper Books,Stone Paper Eco Friendly Tissue Holder. Also,Stone Carton Board 2mm,Stone Carton Board 3mm.

Winding

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

Stone Paper Carton Board

Stone Paper Film 60um, 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,Stone Paper Film. The rope-Stone Card Paper 250um.

Drawing tow

• 1 Newly-Stone Paper 180um.Stone Paper Soft.

Crimping

• 2 Drawn tow is then fed into compression boxes,Full Automatic Marshmallow Production Line, at a rate of 9-15 crimps per inch (3-6 per cm).Deposited Marshmallow Line.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Full Automatic Extruded Marshmallow Production Line.Popping Boba Line.

Cutting

• 4 Following heat setting,Chocolate Blocks Guitar Cutter. 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)Chocolate Slicing Machine.Small Chocolate Machine, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Chocolate Enrobing Line.

The Future

Chocolate Tempering Machine,Chocolate Blocks Crusher's fastest-growing fiber.Chocolate Paste Making Equipment. 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,Chocolate Forming Moulds, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Chocolate Moulds. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Hollow Chocolate Spinning Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.