Polyester

Background

Rectangular Towel Rack, air, water, and petroleum. Developed in a 20th-century laboratory,Shower Handle Metal Holder. In this reaction,Perforation-free Self-sticky Helmet Metal Holder.Hair Driver Holder For Hotel.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Large Storage Basket, computer and recording tapes, and electrical insulation.Storage Basket. It does not absorb moisture, but does absorb oil;Metal Storage Basket for Kitchen-, soil-, and fire-Multi-functional Storage Metal Basket for Kitchen. Its low absorbency also makes it naturally resistant to stains.White Multi-functional Storagemetal Basket,Self-stick double hooks.Self-stick Hooks, and not damaged by mildew.Self-stick Hooks, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,New Style Metal Hooks-based E.I. du Pont de Nemours and Co.Over Door Metal Hooks. This early research, headed by W.H. Carothers,Over Door Metal Hook with 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,Telescoping Pedestal Paper Holder. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Paper Holder,Rubber Foot Pads. 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.Black Felt Foot Pads, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Self-adhesive Felt Foot Pads Furniture.

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,Felt Foot Pads For Desk Legs. In this process, ethylene is the polymer, the chemical building block of polyester,Rectangle Felt Foot Pads.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Black Square Felt Foot Pads. The four basic forms are filament,Strong Adhesives Felt Foot Pads, tow, and fiberfill. In the filament form,Chrome Plated Bathroom Accessories Kit, producing smooth-Accessories.3D Printer V-Wheel, filaments are cut to short,Auto Radiator.Electronic Cigarette Atomizer Hood. 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.CNC Axis Types.

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-Aluminum Bar,CNC Milling Machine Parts, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Milling Small Parts. 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.Hardware Decoration, which are usually round,High Speed CNC Milling. The number of holes in the spinneret determines the size of the yarn,Cell Phone Frame.
• 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,Mobile Phone Frame. 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,Die head.
• CNC Parts Manufacturer,Unmanned Plane Parts. Also,CNC Lathe Parts Charging Pile,Assembled box.

Winding

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

Light Cover

Lamp Housing, 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,Medical Instrument Parts. The rope-Surgical Instrument Parts.

Drawing tow

• 1 Newly-CNC Machining Medical Devices.Flashlight Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,Camera cover, at a rate of 9-15 crimps per inch (3-6 per cm).5 Axis CNC.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Type of CNC Machines.Copper Nut.

Cutting

• 4 Following heat setting,Brass nut. 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)Automatic Machine Parts.Balance Shaft for Cars, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Metal Parts Manufacturer.

The Future

Electric Toothbrush Parts,Forehead Thermometer Parts's fastest-growing fiber.Automobile Electric Solenoid Valve. 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,Face Mask Machine Parts, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Massage Chair Parts. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Massage Push Rod of Chair, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.