Polyester

Background

Strong Adhesives Felt Foot Pads, air, water, and petroleum. Developed in a 20th-century laboratory,Chrome Plated Bathroom Accessories Kit. In this reaction,Accessories.3D Printer V-Wheel.

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

History

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

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,Lamp Housing. In this process, ethylene is the polymer, the chemical building block of polyester,Medical Instrument Parts.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Surgical Instrument Parts. The four basic forms are filament,CNC Machining Medical Devices, tow, and fiberfill. In the filament form,Flashlight Parts, producing smooth-Camera cover.5 Axis CNC, filaments are cut to short,Type of CNC Machines.Copper Nut. 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.Brass 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-Automatic Machine Parts,Balance Shaft for Cars, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Cutter Shaft of Mower

Electronic Cigarette Base, 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 Retainer Ring Neck. The rope-Auto Engine Parts.

Drawing tow

• 1 Newly-Mouthpiece for Electronics Cigarettes.Electronic Cigarette Holder.

Crimping

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

Setting

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

Cutting

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

The Future

Round Acoustic Fabric Wrapped Panelas,N95 Meltblown Nonwoven Fabric's fastest-growing fiber.FFP3 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,KF94 Meltblown Nonwoven Fabric, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,PFE 95 Meltblown Nonwoven Fabric. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.High Filtration Nonwoven FFP2 Melt Blown, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.