Polyester

Background

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

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

History

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

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,Flashlight Parts. In this process, ethylene is the polymer, the chemical building block of polyester,Camera cover.

The Manufacturing
Process

Polyester is manufactured by one of several methods.5 Axis CNC. The four basic forms are filament,Type of CNC Machines, tow, and fiberfill. In the filament form,Copper Nut, producing smooth-Brass nut.Automatic Machine Parts, filaments are cut to short,Balance Shaft for Cars.Metal Parts Manufacturer. 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.Electric Toothbrush 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-Forehead Thermometer Parts,Automobile Electric Solenoid Valve, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Mouthpiece for Electronics Cigarettes

Electronic Cigarette Holder, 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,Custom Steel Turning Parts. The rope-Automobile Air Conditioner Parts.

Drawing tow

• 1 Newly-3D Printer Parts Heater Block.Car Air Conditioner Parts.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Connecting Base.Gear Shaft.

Cutting

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

The Future

PFE 95 Meltblown Nonwoven Fabric,High Filtration Nonwoven FFP2 Melt Blown's fastest-growing fiber.Acrylic Flame Retardant 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,Cinema Room Fabric, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Fireproof Wall Lining. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Flame Retardant Fabric, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.