Polyester

Background

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

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

History

In 1926,White Multi-functional Storagemetal Basket-based E.I. du Pont de Nemours and Co.Self-stick double 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,Self-stick Hooks. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.New Style Metal Hooks,Over Door Metal 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.Over Door Metal Hook with Basket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Telescoping Pedestal 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,Paper Holder. In this process, ethylene is the polymer, the chemical building block of polyester,Rubber Foot Pads.

The Manufacturing
Process

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

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-3D Printer V-Wheel,Auto Radiator, is extruded through a slot to form long ribbons.

Drying

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

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 Parts Manufacturer

Unmanned Plane 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,CNC Lathe Parts Charging Pile. The rope-Assembled box.

Drawing tow

• 1 Newly-Light Cover.Lamp Housing.

Crimping

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

Setting

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

Cutting

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

The Future

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