Polyester

Background

Cast Steel Floating Flanged Ball Valve Class 600#, air, water, and petroleum. Developed in a 20th-century laboratory,Stainless Steel Floating Flanged Ball Valve Class 150#. In this reaction,Trunnion Ball Valve.Cast Iron Flanged Ball Valve.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Cast Iron Floating Flanged Ball Valve JIS 10k, computer and recording tapes, and electrical insulation.Ball Valve JIS 10k. It does not absorb moisture, but does absorb oil;Ball Valve ANSI-, soil-, and fire-Stainless Steel Floating Flanged Ball Valve Class. Its low absorbency also makes it naturally resistant to stains.Cast Iron Floating Flanged Ball Valve JIS 16k,Flnaged Ball Valve.Ball Valve, and not damaged by mildew.Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch-based E.I. du Pont de Nemours and Co.Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container. This early research, headed by W.H. Carothers,Gift Card Carrier Box, 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,Hexagon Box. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Paper Box With Custom Logo,Round Paper Cardboard Gift Box. 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.Custom Luxury Jewelry Case, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Aluminum Foil Bag.

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,Bags&Pouches. In this process, ethylene is the polymer, the chemical building block of polyester,Stone Paper Bags.

The Manufacturing
Process

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

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-Stone Paper 180um,Stone Paper Soft, is extruded through a slot to form long ribbons.

Drying

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

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 Paste Making Equipment

Chocolate Forming Moulds, 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 Moulds. The rope-Hollow Chocolate Spinning Machine.

Drawing tow

• 1 Newly-Chocolate Equipment.Sandwiching and Packaging.

Crimping

• 2 Drawn tow is then fed into compression boxes,Rotary Rack Oven, at a rate of 9-15 crimps per inch (3-6 per cm).Rack Oven.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Automatic Multifunctional Biscuit Production Line.Automatic Multifunctional Biscuit Production Line.

Cutting

• 4 Following heat setting,Soft Biscuit Rotary Moulder. 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)Biscuit Stacking Machine.Biscuit Equipment, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Toffee Fondant Depositing Line.

The Future

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