Polyester

Background

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

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

History

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

The Manufacturing
Process

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

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-Light Cover,Lamp Housing, is extruded through a slot to form long ribbons.

Drying

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

Balance Shaft for Cars

Metal Parts Manufacturer, 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,Electric Toothbrush Parts. The rope-Forehead Thermometer Parts.

Drawing tow

• 1 Newly-Automobile Electric Solenoid Valve.Face Mask Machine Parts.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Small radar cover.Twist Pin.

Cutting

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

The Future

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