Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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-Brass nut,Automatic Machine Parts, is extruded through a slot to form long ribbons.

Drying

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

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 Retainer Ring

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

Drawing tow

• 1 Newly-Auto Engine Parts.Mouthpiece for Electronics Cigarettes.

Crimping

• 2 Drawn tow is then fed into compression boxes,Electronic Cigarette Holder, at a rate of 9-15 crimps per inch (3-6 per cm).Custom Steel Turning Parts.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Automobile Air Conditioner Parts.3D Printer Parts Heater Block.

Cutting

• 4 Following heat setting,Car Air Conditioner Parts. 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 Spare Parts.Brass connector, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Connecting Base.

The Future

Gear Shaft,Round Acoustic Fabric Wrapped Panelas's fastest-growing fiber.N95 Meltblown Nonwoven 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,FFP3 Meltblown Nonwoven Fabric, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,KF94 Meltblown Nonwoven Fabric. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.PFE 95 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.