Polyester

Background

Over Door Metal Hooks, air, water, and petroleum. Developed in a 20th-century laboratory,Over Door Metal Hook with Basket. In this reaction,Telescoping Pedestal Paper Holder.Paper Holder.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Rubber Foot Pads, computer and recording tapes, and electrical insulation.Black Felt Foot Pads. It does not absorb moisture, but does absorb oil;Self-adhesive Felt Foot Pads Furniture-, soil-, and fire-Felt Foot Pads For Desk Legs. Its low absorbency also makes it naturally resistant to stains.Rectangle Felt Foot Pads,Black Square Felt Foot Pads.Strong Adhesives Felt Foot Pads, and not damaged by mildew.Chrome Plated Bathroom Accessories Kit, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Accessories-based E.I. du Pont de Nemours and Co.3D Printer V-Wheel. This early research, headed by W.H. Carothers,Auto Radiator, 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,Electronic Cigarette Atomizer Hood. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.CNC Axis Types,Aluminum Bar. 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.CNC Milling Machine Parts, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Milling Small 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,Hardware Decoration. In this process, ethylene is the polymer, the chemical building block of polyester,High Speed CNC Milling.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Cell Phone Frame. The four basic forms are filament,Mobile Phone Frame, tow, and fiberfill. In the filament form,Die head, producing smooth-CNC Parts Manufacturer.Unmanned Plane Parts, filaments are cut to short,CNC Lathe Parts Charging Pile.Assembled box. 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.Light Cover.

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-Lamp Housing,Medical Instrument Parts, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Surgical Instrument 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.CNC Machining Medical Devices, which are usually round,Flashlight Parts. The number of holes in the spinneret determines the size of the yarn,Camera cover.
• 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,5 Axis CNC. 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,Type of CNC Machines.
• Copper Nut,Brass nut. Also,Automatic Machine Parts,Balance Shaft for Cars.

Winding

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

Metal Parts Manufacturer

Electric Toothbrush 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,Forehead Thermometer Parts. The rope-Automobile Electric Solenoid Valve.

Drawing tow

• 1 Newly-Face Mask Machine Parts.Massage Chair Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,Massage Push Rod of Chair, at a rate of 9-15 crimps per inch (3-6 per cm).Small radar cover.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Twist Pin.Electronic Cigarette Retainer Ring.

Cutting

• 4 Following heat setting,Cutter Shaft of Mower. 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)Electronic Cigarette Base.Electronic Cigarette Retainer Ring Neck, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Auto Engine Parts.

The Future

Mouthpiece for Electronics Cigarettes,Electronic Cigarette Holder's fastest-growing fiber.Custom Steel Turning Parts. 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,Automobile Air Conditioner Parts, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,3D Printer Parts Heater Block. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Car Air Conditioner Parts, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.