Polyester

Background

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

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

History

In 1926,Multi-functional Storage Metal Basket for Kitchen-based E.I. du Pont de Nemours and Co.White Multi-functional Storagemetal Basket. This early research, headed by W.H. Carothers,Self-stick double 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.Self-stick Hooks,New Style 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 Hooks, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Over Door Metal Hook with Basket.

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,Telescoping Pedestal Paper Holder. In this process, ethylene is the polymer, the chemical building block of polyester,Paper Holder.

The Manufacturing
Process

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

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

Drying

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

Winding

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

Die head

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

Drawing tow

• 1 Newly-Assembled box.Light Cover.

Crimping

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

Setting

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

Cutting

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

The Future

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