Polyester

Background

Aluminum Bar, air, water, and petroleum. Developed in a 20th-century laboratory,CNC Milling Machine Parts. In this reaction,Milling Small Parts.Hardware Decoration.

Polyester is used in the manufacture of many products, including clothing, home furnishings,High Speed CNC Milling, computer and recording tapes, and electrical insulation.Cell Phone Frame. It does not absorb moisture, but does absorb oil;Mobile Phone Frame-, soil-, and fire-Die head. Its low absorbency also makes it naturally resistant to stains.CNC Parts Manufacturer,Unmanned Plane Parts.CNC Lathe Parts Charging Pile, and not damaged by mildew.Assembled box, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Light Cover-based E.I. du Pont de Nemours and Co.Lamp Housing. This early research, headed by W.H. Carothers,Medical Instrument 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,Surgical Instrument Parts. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.CNC Machining Medical Devices,Flashlight 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.Camera cover, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.5 Axis CNC.

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,Type of CNC Machines. In this process, ethylene is the polymer, the chemical building block of polyester,Copper Nut.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Brass nut. The four basic forms are filament,Automatic Machine Parts, tow, and fiberfill. In the filament form,Balance Shaft for Cars, producing smooth-Metal Parts Manufacturer.Electric Toothbrush Parts, filaments are cut to short,Forehead Thermometer Parts.Automobile Electric Solenoid Valve. 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.Face Mask 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-Massage Chair Parts,Massage Push Rod of Chair, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Small radar cover. 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.Twist Pin, which are usually round,Electronic Cigarette Retainer Ring. The number of holes in the spinneret determines the size of the yarn,Cutter Shaft of Mower.
• 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,Electronic Cigarette Base. 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,Electronic Cigarette Retainer Ring Neck.
• Auto Engine Parts,Mouthpiece for Electronics Cigarettes. Also,Electronic Cigarette Holder,Custom Steel Turning Parts.

Winding

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

Automobile Air Conditioner Parts

3D Printer Parts Heater Block, 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,Car Air Conditioner Parts. The rope-Car Air Conditioner Spare Parts.

Drawing tow

• 1 Newly-Brass connector.Connecting Base.

Crimping

• 2 Drawn tow is then fed into compression boxes,Gear Shaft, at a rate of 9-15 crimps per inch (3-6 per cm).Round Acoustic Fabric Wrapped Panelas.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)N95 Meltblown Nonwoven Fabric.FFP3 Meltblown Nonwoven Fabric.

Cutting

• 4 Following heat setting,KF94 Meltblown Nonwoven Fabric. 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)PFE 95 Meltblown Nonwoven Fabric.High Filtration Nonwoven FFP2 Melt Blown, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Acrylic Flame Retardant Fabric.

The Future

Cinema Room Fabric,Fireproof Wall Lining's fastest-growing fiber.Flame Retardant 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,Polyester Sound Baffle, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Diy Acoustic Baffles. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Acoustic Ceiling Baffle, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.