Polyester

Background

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

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

History

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

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Unmanned Plane Parts. The four basic forms are filament,CNC Lathe Parts Charging Pile, tow, and fiberfill. In the filament form,Assembled box, producing smooth-Light Cover.Lamp Housing, filaments are cut to short,Medical Instrument Parts.Surgical Instrument 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.CNC Machining Medical Devices.

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-Flashlight Parts,Camera cover, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,5 Axis CNC. 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.Type of CNC Machines, which are usually round,Copper Nut. The number of holes in the spinneret determines the size of the yarn,Brass nut.
• 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,Automatic Machine 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,Balance Shaft for Cars.
• Metal Parts Manufacturer,Electric Toothbrush Parts. Also,Forehead Thermometer Parts,Automobile Electric Solenoid Valve.

Winding

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

Face Mask Machine Parts

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

Drawing tow

• 1 Newly-Twist Pin.Electronic Cigarette Retainer Ring.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Mouthpiece for Electronics Cigarettes. 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 Holder.Custom Steel Turning Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Automobile Air Conditioner Parts.

The Future

3D Printer Parts Heater Block,Car Air Conditioner Parts's fastest-growing fiber.Car Air Conditioner Spare 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,Brass connector, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Connecting Base. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Gear Shaft, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.