Polyester

Background

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

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

History

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

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,High Speed CNC Milling. In this process, ethylene is the polymer, the chemical building block of polyester,Cell Phone Frame.

The Manufacturing
Process

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

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

Drying

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

Winding

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

Electric Toothbrush Parts

Forehead Thermometer 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,Automobile Electric Solenoid Valve. The rope-Face Mask Machine Parts.

Drawing tow

• 1 Newly-Massage Chair Parts.Massage Push Rod of Chair.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Electronic Cigarette Base. 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 Retainer Ring Neck.Auto Engine Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Mouthpiece for Electronics Cigarettes.

The Future

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