Polyester

Background

Grooved Ball Valve, air, water, and petroleum. Developed in a 20th-century laboratory,Ductile Iron Ball Valve Full Port. In this reaction,2pc Cast Steel Ball Valve Full Port 2500-5000wog.Ductile Iron Bolted Ball Valve Reduced Port 1000-2000wog.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Bolted Ball Valve, computer and recording tapes, and electrical insulation.Cast Steel Bolted Ball Valve Reduced Port 3000wog. It does not absorb moisture, but does absorb oil;4c Bolted Ball Valve Full Port 5000wog-, soil-, and fire-Cast Steel Floating Flanged Ball Valve Class 150#. Its low absorbency also makes it naturally resistant to stains.Cast Steel Floating Flanged Ball Valve Class 600#,Stainless Steel Floating Flanged Ball Valve Class 150#.Trunnion Ball Valve, and not damaged by mildew.Cast Iron Flanged Ball Valve, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Cast Iron Floating Flanged Ball Valve JIS 10k-based E.I. du Pont de Nemours and Co.Ball Valve JIS 10k. This early research, headed by W.H. Carothers,Ball Valve ANSI, 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,Stainless Steel Floating Flanged Ball Valve Class. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cast Iron Floating Flanged Ball Valve JIS 16k,Flnaged Ball Valve. 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.Ball Valve, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Custom Printed Your Own Logo Cardboard Packaging Yellow Brown Kraft Gift Craft Shopping Paper Bag with Handles.

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,To Go Containers Food Disposable Wheat Straw Bento Box Microwavable Lunch. In this process, ethylene is the polymer, the chemical building block of polyester,Compostable Grease Proof Bagasse Pulp Lunch Packaging Box Food Container.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Gift Card Carrier Box. The four basic forms are filament,Hexagon Box, tow, and fiberfill. In the filament form,Paper Box With Custom Logo, producing smooth-Round Paper Cardboard Gift Box.Custom Luxury Jewelry Case, filaments are cut to short,Aluminum Foil Bag.Bags&Pouches. 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 Bags.

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 Books,Stone Paper Eco Friendly Tissue Holder, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Stone Carton Board 2mm. 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 Carton Board 3mm, which are usually round,Stone Paper Carton Board. The number of holes in the spinneret determines the size of the yarn,Stone Paper Film 60um.
• 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,Stone Paper Film. 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 Card Paper 250um.
• Stone Paper 180um,Stone Paper Soft. Also,Full Automatic Marshmallow Production Line,Deposited Marshmallow 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.

Full Automatic Extruded Marshmallow Production Line

Popping Boba Line, 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 Blocks Guitar Cutter. The rope-Chocolate Slicing Machine.

Drawing tow

• 1 Newly-Small Chocolate Machine.Chocolate Enrobing Line.

Crimping

• 2 Drawn tow is then fed into compression boxes,Chocolate Tempering Machine, at a rate of 9-15 crimps per inch (3-6 per cm).Chocolate Blocks Crusher.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Chocolate Paste Making Equipment.Chocolate Forming Moulds.

Cutting

• 4 Following heat setting,Chocolate Moulds. 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)Hollow Chocolate Spinning Machine.Chocolate Equipment, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Sandwiching and Packaging.

The Future

Rotary Rack Oven,Rack Oven's fastest-growing fiber.Automatic Multifunctional Biscuit Production 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 Multifunctional Biscuit Production Line, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Soft Biscuit Rotary Moulder. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Biscuit Stacking Machine, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.