Polyester

Background

Perforation-free Wall-mounted Hair Dryer Storage Plastic Box, air, water, and petroleum. Developed in a 20th-century laboratory,Plastic Box. In this reaction,Bathroom Metal Towel Rack With Glass Panel.Bathroom Metal Towel Rack.

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

History

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

The Manufacturing
Process

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

Drying

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

Winding

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

High Speed CNC Milling

Cell Phone Frame, 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,Mobile Phone Frame. The rope-Die head.

Drawing tow

• 1 Newly-CNC Parts Manufacturer.Unmanned Plane Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,CNC Lathe Parts Charging Pile, at a rate of 9-15 crimps per inch (3-6 per cm).Assembled box.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Light Cover.Lamp Housing.

Cutting

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

The Future

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