Polyester

Background

Bathroom Metal Towel Rack With Glass Panel, air, water, and petroleum. Developed in a 20th-century laboratory,Bathroom Metal Towel Rack. In this reaction,Metal Towel Rack.Popular Metal Tissue Holder.

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

History

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

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,Over Door Metal Hook with Basket. In this process, ethylene is the polymer, the chemical building block of polyester,Telescoping Pedestal Paper Holder.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Paper Holder. The four basic forms are filament,Rubber Foot Pads, tow, and fiberfill. In the filament form,Black Felt Foot Pads, producing smooth-Self-adhesive Felt Foot Pads Furniture.Felt Foot Pads For Desk Legs, filaments are cut to short,Rectangle Felt Foot Pads.Black Square Felt Foot Pads. 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.Strong Adhesives Felt Foot Pads.

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-Chrome Plated Bathroom Accessories Kit,Accessories, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,3D Printer V-Wheel. 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.Auto Radiator, which are usually round,Electronic Cigarette Atomizer Hood. The number of holes in the spinneret determines the size of the yarn,CNC Axis Types.
• 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,Aluminum Bar. 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,CNC Milling Machine Parts.
• Milling Small Parts,Hardware Decoration. Also,High Speed CNC Milling,Cell Phone Frame.

Winding

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

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Die head, 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,CNC Parts Manufacturer. The rope-Unmanned Plane Parts.

Drawing tow

• 1 Newly-CNC Lathe Parts Charging Pile.Assembled box.

Crimping

• 2 Drawn tow is then fed into compression boxes,Light Cover, at a rate of 9-15 crimps per inch (3-6 per cm).Lamp Housing.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Medical Instrument Parts.Surgical Instrument Parts.

Cutting

• 4 Following heat setting,CNC Machining Medical Devices. 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)Flashlight Parts.Camera cover, such ascarpet,polyester filaments are cut into 6 inch (15 cm)5 Axis CNC.

The Future

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