Polyester

Background

Storage Basket, air, water, and petroleum. Developed in a 20th-century laboratory,Metal Storage Basket for Kitchen. In this reaction,Multi-functional Storage Metal Basket for Kitchen.White Multi-functional Storagemetal Basket.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Self-stick double hooks, computer and recording tapes, and electrical insulation.Self-stick Hooks. It does not absorb moisture, but does absorb oil;Self-stick Hooks-, soil-, and fire-New Style Metal Hooks. Its low absorbency also makes it naturally resistant to stains.Over Door Metal Hooks,Over Door Metal Hook with Basket.Telescoping Pedestal Paper Holder, and not damaged by mildew.Paper Holder, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Rubber Foot Pads-based E.I. du Pont de Nemours and Co.Black Felt Foot Pads. This early research, headed by W.H. Carothers,Self-adhesive Felt Foot Pads Furniture, 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,Felt Foot Pads For Desk Legs. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Rectangle Felt Foot Pads,Black Square Felt Foot Pads. 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.Strong Adhesives Felt Foot Pads, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Chrome Plated Bathroom Accessories Kit.

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,Accessories. In this process, ethylene is the polymer, the chemical building block of polyester,3D Printer V-Wheel.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Auto Radiator. The four basic forms are filament,Electronic Cigarette Atomizer Hood, tow, and fiberfill. In the filament form,CNC Axis Types, producing smooth-Aluminum Bar.CNC Milling Machine Parts, filaments are cut to short,Milling Small Parts.Hardware Decoration. 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.High Speed CNC Milling.

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-Cell Phone Frame,Mobile Phone Frame, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Die head. 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 Parts Manufacturer, which are usually round,Unmanned Plane Parts. The number of holes in the spinneret determines the size of the yarn,CNC Lathe Parts Charging Pile.
• 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,Assembled box. 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,Light Cover.
• Lamp Housing,Medical Instrument Parts. Also,Surgical Instrument Parts,CNC Machining Medical Devices.

Winding

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

Flashlight Parts

Camera cover, 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,5 Axis CNC. The rope-Type of CNC Machines.

Drawing tow

• 1 Newly-Copper Nut.Brass nut.

Crimping

• 2 Drawn tow is then fed into compression boxes,Automatic Machine Parts, at a rate of 9-15 crimps per inch (3-6 per cm).Balance Shaft for Cars.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Metal Parts Manufacturer.Electric Toothbrush Parts.

Cutting

• 4 Following heat setting,Forehead Thermometer Parts. 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)Automobile Electric Solenoid Valve.Face Mask Machine Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Massage Chair Parts.

The Future

Massage Push Rod of Chair,Small radar cover's fastest-growing fiber.Twist Pin. 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,Electronic Cigarette Retainer Ring, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Cutter Shaft of Mower. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Electronic Cigarette Base, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.