Polyester

Background

Tissue Holder, air, water, and petroleum. Developed in a 20th-century laboratory,Basketball Sports Storage Rack. In this reaction,Rectangular Towel Rack.Shower Handle Metal Holder.

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

History

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

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,Black Felt Foot Pads. In this process, ethylene is the polymer, the chemical building block of polyester,Self-adhesive Felt Foot Pads Furniture.

The Manufacturing
Process

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

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-Electronic Cigarette Atomizer Hood,CNC Axis Types, is extruded through a slot to form long ribbons.

Drying

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

CNC Lathe Parts Charging Pile

Assembled box, 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,Light Cover. The rope-Lamp Housing.

Drawing tow

• 1 Newly-Medical Instrument Parts.Surgical Instrument Parts.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Camera cover.5 Axis CNC.

Cutting

• 4 Following heat setting,Type of CNC Machines. 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)Copper Nut.Brass nut, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Automatic Machine Parts.

The Future

Balance Shaft for Cars,Metal Parts Manufacturer's fastest-growing fiber.Electric Toothbrush 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,Forehead Thermometer Parts, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Automobile Electric Solenoid Valve. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Face Mask 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.