Polyester

Background

Trunnion Ball Valve, air, water, and petroleum. Developed in a 20th-century laboratory,Cast Iron Flanged Ball Valve. In this reaction,Cast Iron Floating Flanged Ball Valve JIS 10k.Ball Valve JIS 10k.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Ball Valve ANSI, computer and recording tapes, and electrical insulation.Stainless Steel Floating Flanged Ball Valve Class. It does not absorb moisture, but does absorb oil;Cast Iron Floating Flanged Ball Valve JIS 16k-, soil-, and fire-Flnaged Ball Valve. Its low absorbency also makes it naturally resistant to stains.Ball Valve,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, and not damaged by mildew.Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Gift Card Carrier Box-based E.I. du Pont de Nemours and Co.Hexagon Box. This early research, headed by W.H. Carothers,Paper Box With Custom Logo, 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,Round Paper Cardboard Gift Box. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Custom Luxury Jewelry Case,Aluminum Foil Bag. 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.Bags&Pouches, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Stone Paper Bags.

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,Stone Paper Books. In this process, ethylene is the polymer, the chemical building block of polyester,Stone Paper Eco Friendly Tissue Holder.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Stone Carton Board 2mm. The four basic forms are filament,Stone Carton Board 3mm, tow, and fiberfill. In the filament form,Stone Paper Carton Board, producing smooth-Stone Paper Film 60um.Stone Paper Film, filaments are cut to short,Stone Card Paper 250um.Stone Paper 180um. 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.Stone Paper Soft.

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-Full Automatic Marshmallow Production Line,Deposited Marshmallow Line, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Full Automatic Extruded Marshmallow Production Line. 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.Popping Boba Line, which are usually round,Chocolate Blocks Guitar Cutter. The number of holes in the spinneret determines the size of the yarn,Chocolate Slicing Machine.
• 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,Small Chocolate 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,Chocolate Enrobing Line.
• Chocolate Tempering Machine,Chocolate Blocks Crusher. Also,Chocolate Paste Making Equipment,Chocolate Forming Moulds.

Winding

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

Chocolate Moulds

Hollow Chocolate Spinning Machine, 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,Chocolate Equipment. The rope-Sandwiching and Packaging.

Drawing tow

• 1 Newly-Rotary Rack Oven.Rack Oven.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Soft Biscuit Rotary Moulder.Biscuit Stacking Machine.

Cutting

• 4 Following heat setting,Biscuit Equipment. 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)Toffee Fondant Depositing Line.Automatic Starch Mogul Line, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Die Formed Lollipop Production Line.

The Future

Hard Candy Depositing Line,Automatic Drying System's fastest-growing fiber.Automatic Cereal Bar Line. 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,Extruding Type Konjac Ball Production Line, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Aluminium Moulds and Silicon. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Gummy Moving Cart, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.