Polyester

Background

Chrome Plated Bathroom Accessories Kit, air, water, and petroleum. Developed in a 20th-century laboratory,Accessories. In this reaction,3D Printer V-Wheel.Auto Radiator.

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

History

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

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

The Manufacturing
Process

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

Drying

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

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 Base

Electronic Cigarette Retainer Ring Neck, 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,Auto Engine Parts. The rope-Mouthpiece for Electronics Cigarettes.

Drawing tow

• 1 Newly-Electronic Cigarette Holder.Custom Steel Turning Parts.

Crimping

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

Setting

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

Cutting

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

The Future

N95 Meltblown Nonwoven Fabric,FFP3 Meltblown Nonwoven Fabric's fastest-growing fiber.KF94 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,PFE 95 Meltblown Nonwoven Fabric, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,High Filtration Nonwoven FFP2 Melt Blown. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Acrylic 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.