Polyester

Background

Black Felt Foot Pads, air, water, and petroleum. Developed in a 20th-century laboratory,Self-adhesive Felt Foot Pads Furniture. In this reaction,Felt Foot Pads For Desk Legs.Rectangle Felt Foot Pads.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Black Square Felt Foot Pads, computer and recording tapes, and electrical insulation.Strong Adhesives Felt Foot Pads. It does not absorb moisture, but does absorb oil;Chrome Plated Bathroom Accessories Kit-, soil-, and fire-Accessories. Its low absorbency also makes it naturally resistant to stains.3D Printer V-Wheel,Auto Radiator.Electronic Cigarette Atomizer Hood, and not damaged by mildew.CNC Axis Types, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Aluminum Bar-based E.I. du Pont de Nemours and Co.CNC Milling Machine Parts. This early research, headed by W.H. Carothers,Milling Small 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,Hardware Decoration. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.High Speed CNC Milling,Cell Phone Frame. 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.Mobile Phone Frame, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Die head.

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,CNC Parts Manufacturer. In this process, ethylene is the polymer, the chemical building block of polyester,Unmanned Plane Parts.

The Manufacturing
Process

Polyester is manufactured by one of several methods.CNC Lathe Parts Charging Pile. The four basic forms are filament,Assembled box, tow, and fiberfill. In the filament form,Light Cover, producing smooth-Lamp Housing.Medical Instrument Parts, filaments are cut to short,Surgical Instrument Parts.CNC Machining Medical Devices. 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.Flashlight 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-Camera cover,5 Axis CNC, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Type of CNC Machines. 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.Copper Nut, which are usually round,Brass nut. The number of holes in the spinneret determines the size of the yarn,Automatic 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,Balance Shaft for Cars. 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,Metal Parts Manufacturer.
• Electric Toothbrush Parts,Forehead Thermometer Parts. Also,Automobile Electric Solenoid Valve,Face Mask Machine 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.

Massage Chair Parts

Massage Push Rod of Chair, 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,Small radar cover. The rope-Twist Pin.

Drawing tow

• 1 Newly-Electronic Cigarette Retainer Ring.Cutter Shaft of Mower.

Crimping

• 2 Drawn tow is then fed into compression boxes,Electronic Cigarette Base, at a rate of 9-15 crimps per inch (3-6 per cm).Electronic Cigarette Retainer Ring Neck.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Auto Engine Parts.Mouthpiece for Electronics Cigarettes.

Cutting

• 4 Following heat setting,Electronic Cigarette Holder. 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)Custom Steel Turning Parts.Automobile Air Conditioner Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)3D Printer Parts Heater Block.

The Future

Car Air Conditioner Parts,Car Air Conditioner Spare Parts's fastest-growing fiber.Brass connector. 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,Connecting Base, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Gear Shaft. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Round Acoustic Fabric Wrapped Panelas, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.