Polyester

Background

Rectangle Felt Foot Pads, air, water, and petroleum. Developed in a 20th-century laboratory,Black Square Felt Foot Pads. In this reaction,Strong Adhesives Felt Foot Pads.Chrome Plated Bathroom Accessories Kit.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Accessories, computer and recording tapes, and electrical insulation.3D Printer V-Wheel. It does not absorb moisture, but does absorb oil;Auto Radiator-, soil-, and fire-Electronic Cigarette Atomizer Hood. Its low absorbency also makes it naturally resistant to stains.CNC Axis Types,Aluminum Bar.CNC Milling Machine Parts, and not damaged by mildew.Milling Small Parts, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Hardware Decoration-based E.I. du Pont de Nemours and Co.High Speed CNC Milling. This early research, headed by W.H. Carothers,Cell Phone Frame, 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,Mobile Phone Frame. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Die head,CNC Parts Manufacturer. 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.Unmanned Plane Parts, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.CNC Lathe Parts Charging Pile.

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,Assembled box. In this process, ethylene is the polymer, the chemical building block of polyester,Light Cover.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Lamp Housing. The four basic forms are filament,Medical Instrument Parts, tow, and fiberfill. In the filament form,Surgical Instrument Parts, producing smooth-CNC Machining Medical Devices.Flashlight Parts, filaments are cut to short,Camera cover.5 Axis CNC. 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.Type of CNC Machines.

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-Copper Nut,Brass nut, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Automatic 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.Balance Shaft for Cars, which are usually round,Metal Parts Manufacturer. The number of holes in the spinneret determines the size of the yarn,Electric Toothbrush Parts.
• 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,Forehead Thermometer Parts. 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,Automobile Electric Solenoid Valve.
• Face Mask Machine Parts,Massage Chair Parts. Also,Massage Push Rod of Chair,Small radar cover.

Winding

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

Twist Pin

Electronic Cigarette Retainer Ring, 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,Cutter Shaft of Mower. The rope-Electronic Cigarette Base.

Drawing tow

• 1 Newly-Electronic Cigarette Retainer Ring Neck.Auto Engine Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,Mouthpiece for Electronics Cigarettes, at a rate of 9-15 crimps per inch (3-6 per cm).Electronic Cigarette Holder.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Custom Steel Turning Parts.Automobile Air Conditioner Parts.

Cutting

• 4 Following heat setting,3D Printer Parts Heater Block. 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)Car Air Conditioner Parts.Car Air Conditioner Spare Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Brass connector.

The Future

Connecting Base,Gear Shaft's fastest-growing fiber.Round Acoustic Fabric Wrapped Panelas. 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,N95 Meltblown Nonwoven Fabric, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,FFP3 Meltblown Nonwoven Fabric. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.KF94 Meltblown Nonwoven Fabric, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.