Polyester

Background

Folding Shelf, air, water, and petroleum. Developed in a 20th-century laboratory,Bathroom Glass Shelf with Round Base. In this reaction,Glass Shelf.Perforation-free Wall-mounted Storage Plastic Box.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Perforation-free Wall-mounted Hair Dryer Storage Plastic Box, computer and recording tapes, and electrical insulation.Plastic Box. It does not absorb moisture, but does absorb oil;Bathroom Metal Towel Rack With Glass Panel-, soil-, and fire-Bathroom Metal Towel Rack. Its low absorbency also makes it naturally resistant to stains.Metal Towel Rack,Popular Metal Tissue Holder.Tissue Holder, and not damaged by mildew.Basketball Sports Storage Rack, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Rectangular Towel Rack-based E.I. du Pont de Nemours and Co.Shower Handle Metal Holder. This early research, headed by W.H. Carothers,Perforation-free Self-sticky Helmet Metal Holder, 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,Hair Driver Holder For Hotel. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Large Storage Basket,Storage 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.Metal Storage Basket for Kitchen, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Multi-functional Storage Metal Basket for Kitchen.

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,White Multi-functional Storagemetal Basket. In this process, ethylene is the polymer, the chemical building block of polyester,Self-stick double hooks.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Self-stick Hooks. The four basic forms are filament,Self-stick Hooks, tow, and fiberfill. In the filament form,New Style Metal Hooks, producing smooth-Over Door Metal Hooks.Over Door Metal Hook with Basket, filaments are cut to short,Telescoping Pedestal Paper Holder.Paper Holder. 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.Rubber 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-Black Felt Foot Pads,Self-adhesive Felt Foot Pads Furniture, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Felt Foot Pads For Desk Legs. 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.Rectangle Felt Foot Pads, which are usually round,Black Square Felt Foot Pads. The number of holes in the spinneret determines the size of the yarn,Strong Adhesives Felt Foot Pads.
• 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,Chrome Plated Bathroom Accessories Kit. 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,Accessories.
• 3D Printer V-Wheel,Auto Radiator. Also,Electronic Cigarette Atomizer Hood,CNC Axis Types.

Winding

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

Aluminum Bar

CNC Milling Machine 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,Milling Small Parts. The rope-Hardware Decoration.

Drawing tow

• 1 Newly-High Speed CNC Milling.Cell Phone Frame.

Crimping

• 2 Drawn tow is then fed into compression boxes,Mobile Phone Frame, at a rate of 9-15 crimps per inch (3-6 per cm).Die head.

Setting

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

Cutting

• 4 Following heat setting,CNC Lathe Parts Charging Pile. 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)Assembled box.Light Cover, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Lamp Housing.

The Future

Medical Instrument Parts,Surgical Instrument Parts's fastest-growing fiber.CNC Machining Medical Devices. 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,Flashlight Parts, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Camera cover. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.5 Axis CNC, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.