Polyester

Background

4c Bolted Ball Valve Full Port 5000wog, air, water, and petroleum. Developed in a 20th-century laboratory,Cast Steel Floating Flanged Ball Valve Class 150#. In this reaction,Cast Steel Floating Flanged Ball Valve Class 600#.Stainless Steel Floating Flanged Ball Valve Class 150#.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Trunnion Ball Valve, computer and recording tapes, and electrical insulation.Cast Iron Flanged Ball Valve. It does not absorb moisture, but does absorb oil;Cast Iron Floating Flanged Ball Valve JIS 10k-, soil-, and fire-Ball Valve JIS 10k. Its low absorbency also makes it naturally resistant to stains.Ball Valve ANSI,Stainless Steel Floating Flanged Ball Valve Class.Cast Iron Floating Flanged Ball Valve JIS 16k, and not damaged by mildew.Flnaged Ball Valve, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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,Custom Luxury Jewelry Case. In this process, ethylene is the polymer, the chemical building block of polyester,Aluminum Foil Bag.

The Manufacturing
Process

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

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 Film,Stone Card Paper 250um, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Stone Paper 180um. 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.Stone Paper Soft, which are usually round,Full Automatic Marshmallow Production Line. The number of holes in the spinneret determines the size of the yarn,Deposited Marshmallow 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,Full Automatic Extruded Marshmallow Production Line. 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,Popping Boba Line.
• Chocolate Blocks Guitar Cutter,Chocolate Slicing Machine. Also,Small Chocolate Machine,Chocolate Enrobing Line.

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 Tempering Machine

Chocolate Blocks Crusher, 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 Paste Making Equipment. The rope-Chocolate Forming Moulds.

Drawing tow

• 1 Newly-Chocolate Moulds.Hollow Chocolate Spinning Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Chocolate Equipment, at a rate of 9-15 crimps per inch (3-6 per cm).Sandwiching and Packaging.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Rotary Rack Oven.Rack Oven.

Cutting

• 4 Following heat setting,Automatic Multifunctional Biscuit Production 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 Multifunctional Biscuit Production Line.Soft Biscuit Rotary Moulder, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Biscuit Stacking Machine.

The Future

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