Polyester

Background

Ball Valve ANSI, air, water, and petroleum. Developed in a 20th-century laboratory,Stainless Steel Floating Flanged Ball Valve Class. In this reaction,Cast Iron Floating Flanged Ball Valve JIS 16k.Flnaged Ball Valve.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Ball Valve, computer and recording tapes, and electrical insulation.Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles. It does not absorb moisture, but does absorb oil;To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch-, soil-, and fire-Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container. Its low absorbency also makes it naturally resistant to stains.Gift Card Carrier Box,Hexagon Box.Paper Box With Custom Logo, and not damaged by mildew.Round Paper Cardboard Gift Box, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Custom Luxury Jewelry Case-based E.I. du Pont de Nemours and Co.Aluminum Foil Bag. This early research, headed by W.H. Carothers,Bags&Pouches, 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,Stone Paper Bags. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Stone Paper Books,Stone Paper Eco Friendly Tissue Holder. 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.Stone Carton Board 2mm, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Stone Carton Board 3mm.

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 Carton Board. In this process, ethylene is the polymer, the chemical building block of polyester,Stone Paper Film 60um.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Stone Paper Film. The four basic forms are filament,Stone Card Paper 250um, tow, and fiberfill. In the filament form,Stone Paper 180um, producing smooth-Stone Paper Soft.Full Automatic Marshmallow Production Line, filaments are cut to short,Deposited Marshmallow Line.Full Automatic Extruded Marshmallow Production Line. 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.Popping Boba Line.

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-Chocolate Blocks Guitar Cutter,Chocolate Slicing Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Small Chocolate Machine. 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.Chocolate Enrobing Line, which are usually round,Chocolate Tempering Machine. The number of holes in the spinneret determines the size of the yarn,Chocolate Blocks Crusher.
• 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 Paste Making Equipment. 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 Forming Moulds.
• Chocolate Moulds,Hollow Chocolate Spinning Machine. Also,Chocolate Equipment,Sandwiching and Packaging.

Winding

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

Rotary Rack Oven

Rack Oven, 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,Automatic Multifunctional Biscuit Production Line. The rope-Automatic Multifunctional Biscuit Production Line.

Drawing tow

• 1 Newly-Soft Biscuit Rotary Moulder.Biscuit Stacking Machine.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Automatic Starch Mogul Line.Die Formed Lollipop Production Line.

Cutting

• 4 Following heat setting,Hard Candy Depositing Line. 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)Automatic Drying System.Automatic Cereal Bar Line, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Extruding Type Konjac Ball Production Line.

The Future

Aluminium Moulds and Silicon,Gummy Moving Cart's fastest-growing fiber.Advance Rasing Film Vacuum Cooker. 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,Vacuum Batch Type Cooker, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Gummy Kitchen System. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Advance Gummy 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.