Polyester

Background

Accessories, air, water, and petroleum. Developed in a 20th-century laboratory,3D Printer V-Wheel. In this reaction,Auto Radiator.Electronic Cigarette Atomizer Hood.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Flashlight Parts. The four basic forms are filament,Camera cover, tow, and fiberfill. In the filament form,5 Axis CNC, producing smooth-Type of CNC Machines.Copper Nut, filaments are cut to short,Brass nut.Automatic Machine 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.Balance Shaft for Cars.

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-Metal Parts Manufacturer,Electric Toothbrush Parts, is extruded through a slot to form long ribbons.

Drying

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

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 Neck

Auto Engine 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,Mouthpiece for Electronics Cigarettes. The rope-Electronic Cigarette Holder.

Drawing tow

• 1 Newly-Custom Steel Turning Parts.Automobile Air Conditioner Parts.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Car Air Conditioner Spare Parts.Brass connector.

Cutting

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

The Future

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