Polyester

Background

Electronic Cigarette Atomizer Hood, air, water, and petroleum. Developed in a 20th-century laboratory,CNC Axis Types. In this reaction,Aluminum Bar.CNC Milling Machine Parts.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Milling Small Parts, computer and recording tapes, and electrical insulation.Hardware Decoration. It does not absorb moisture, but does absorb oil;High Speed CNC Milling-, soil-, and fire-Cell Phone Frame. Its low absorbency also makes it naturally resistant to stains.Mobile Phone Frame,Die head.CNC Parts Manufacturer, and not damaged by mildew.Unmanned Plane Parts, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,CNC Lathe Parts Charging Pile-based E.I. du Pont de Nemours and Co.Assembled box. This early research, headed by W.H. Carothers,Light Cover, 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,Lamp Housing. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Medical Instrument Parts,Surgical Instrument Parts. 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.CNC Machining Medical Devices, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Flashlight Parts.

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,Camera cover. In this process, ethylene is the polymer, the chemical building block of polyester,5 Axis CNC.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Type of CNC Machines. The four basic forms are filament,Copper Nut, tow, and fiberfill. In the filament form,Brass nut, producing smooth-Automatic Machine Parts.Balance Shaft for Cars, filaments are cut to short,Metal Parts Manufacturer.Electric Toothbrush Parts. 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.Forehead Thermometer Parts.

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-Automobile Electric Solenoid Valve,Face Mask Machine Parts, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Massage Chair Parts. 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.Massage Push Rod of Chair, which are usually round,Small radar cover. The number of holes in the spinneret determines the size of the yarn,Twist Pin.
• 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,Electronic Cigarette Retainer Ring. 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,Cutter Shaft of Mower.
• Electronic Cigarette Base,Electronic Cigarette Retainer Ring Neck. Also,Auto Engine Parts,Mouthpiece for Electronics Cigarettes.

Winding

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

Electronic Cigarette Holder

Custom Steel Turning Parts, 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,Automobile Air Conditioner Parts. The rope-3D Printer Parts Heater Block.

Drawing tow

• 1 Newly-Car Air Conditioner Parts.Car Air Conditioner Spare Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,Brass connector, at a rate of 9-15 crimps per inch (3-6 per cm).Connecting Base.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Gear Shaft.Round Acoustic Fabric Wrapped Panelas.

Cutting

• 4 Following heat setting,N95 Meltblown Nonwoven Fabric. 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)FFP3 Meltblown Nonwoven Fabric.KF94 Meltblown Nonwoven Fabric, such ascarpet,polyester filaments are cut into 6 inch (15 cm)PFE 95 Meltblown Nonwoven Fabric.

The Future

High Filtration Nonwoven FFP2 Melt Blown,Acrylic Flame Retardant Fabric's fastest-growing fiber.Cinema Room Fabric. 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,Fireproof Wall Lining, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Flame Retardant Fabric. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Polyester Sound Baffle, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.