Polyester

Background

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

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

History

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

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,Chrome Plated Bathroom Accessories Kit. In this process, ethylene is the polymer, the chemical building block of polyester,Accessories.

The Manufacturing
Process

Polyester is manufactured by one of several methods.3D Printer V-Wheel. The four basic forms are filament,Auto Radiator, tow, and fiberfill. In the filament form,Electronic Cigarette Atomizer Hood, producing smooth-CNC Axis Types.Aluminum Bar, filaments are cut to short,CNC Milling Machine Parts.Milling Small 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.Hardware Decoration.

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-High Speed CNC Milling,Cell Phone Frame, is extruded through a slot to form long ribbons.

Drying

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

CNC Machining Medical Devices

Flashlight 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,Camera cover. The rope-5 Axis CNC.

Drawing tow

• 1 Newly-Type of CNC Machines.Copper Nut.

Crimping

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

Setting

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

Cutting

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

The Future

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