Polyester

Background

Glass Shelf, air, water, and petroleum. Developed in a 20th-century laboratory,Perforation-free Wall-mounted Storage Plastic Box. In this reaction,Perforation-free Wall-mounted Hair Dryer Storage Plastic Box.Plastic Box.

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

History

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

The Manufacturing
Process

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

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-Felt Foot Pads For Desk Legs,Rectangle Felt Foot Pads, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Milling Small Parts

Hardware Decoration, 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,High Speed CNC Milling. The rope-Cell Phone Frame.

Drawing tow

• 1 Newly-Mobile Phone Frame.Die head.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)CNC Lathe Parts Charging Pile.Assembled box.

Cutting

• 4 Following heat setting,Light 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)Lamp Housing.Medical Instrument Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Surgical Instrument Parts.

The Future

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