Polyester

Background

Popular Metal Tissue Holder, air, water, and petroleum. Developed in a 20th-century laboratory,Tissue Holder. In this reaction,Basketball Sports Storage Rack.Rectangular Towel Rack.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Shower Handle Metal Holder, computer and recording tapes, and electrical insulation.Perforation-free Self-sticky Helmet Metal Holder. It does not absorb moisture, but does absorb oil;Hair Driver Holder For Hotel-, soil-, and fire-Large Storage Basket. Its low absorbency also makes it naturally resistant to stains.Storage Basket,Metal Storage Basket for Kitchen.Multi-functional Storage Metal Basket for Kitchen, and not damaged by mildew.White Multi-functional Storagemetal Basket, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Self-stick double hooks-based E.I. du Pont de Nemours and Co.Self-stick Hooks. This early research, headed by W.H. Carothers,Self-stick Hooks, 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,New Style Metal Hooks. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Over Door Metal Hooks,Over Door Metal Hook with Basket. 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.Telescoping Pedestal Paper Holder, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Paper Holder.

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,Rubber Foot Pads. In this process, ethylene is the polymer, the chemical building block of polyester,Black Felt Foot Pads.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Self-adhesive Felt Foot Pads Furniture. The four basic forms are filament,Felt Foot Pads For Desk Legs, tow, and fiberfill. In the filament form,Rectangle Felt Foot Pads, producing smooth-Black Square Felt Foot Pads.Strong Adhesives Felt Foot Pads, filaments are cut to short,Chrome Plated Bathroom Accessories Kit.Accessories. 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.3D Printer V-Wheel.

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-Auto Radiator,Electronic Cigarette Atomizer Hood, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,CNC Axis Types. 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.Aluminum Bar, which are usually round,CNC Milling Machine Parts. The number of holes in the spinneret determines the size of the yarn,Milling Small 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,Hardware Decoration. 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,High Speed CNC Milling.
• Cell Phone Frame,Mobile Phone Frame. Also,Die head,CNC 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.

Unmanned Plane Parts

CNC Lathe Parts Charging Pile, 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,Assembled box. The rope-Light Cover.

Drawing tow

• 1 Newly-Lamp Housing.Medical Instrument Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,Surgical Instrument Parts, at a rate of 9-15 crimps per inch (3-6 per cm).CNC Machining Medical Devices.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Flashlight Parts.Camera cover.

Cutting

• 4 Following heat setting,5 Axis CNC. 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)Type of CNC Machines.Copper Nut, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Brass nut.

The Future

Automatic Machine Parts,Balance Shaft for Cars's fastest-growing fiber.Metal Parts Manufacturer. 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,Electric Toothbrush Parts, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Forehead Thermometer Parts. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Automobile Electric Solenoid Valve, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.