Polyester

Background

Felt Roll, air, water, and petroleum. Developed in a 20th-century laboratory,400mm Double Layers Folding Shelf. In this reaction,300mm Double Layers Folding Shelf.Folding Shelf.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Bathroom Glass Shelf with Round Base, computer and recording tapes, and electrical insulation.Glass Shelf. It does not absorb moisture, but does absorb oil;Perforation-free Wall-mounted Storage Plastic Box-, soil-, and fire-Perforation-free Wall-mounted Hair Dryer Storage Plastic Box. Its low absorbency also makes it naturally resistant to stains.Plastic Box,Bathroom Metal Towel Rack With Glass Panel.Bathroom Metal Towel Rack, and not damaged by mildew.Metal Towel Rack, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Multi-functional Storage Metal Basket for Kitchen. The four basic forms are filament,White Multi-functional Storagemetal Basket, tow, and fiberfill. In the filament form,Self-stick double hooks, producing smooth-Self-stick Hooks.Self-stick Hooks, filaments are cut to short,New Style Metal Hooks.Over Door Metal Hooks. 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.Over Door Metal Hook with Basket.

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-Telescoping Pedestal Paper Holder,Paper Holder, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Rubber 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.Black Felt Foot Pads, which are usually round,Self-adhesive Felt Foot Pads Furniture. The number of holes in the spinneret determines the size of the yarn,Felt Foot Pads For Desk Legs.
• 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,Rectangle Felt Foot Pads. 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,Black Square Felt Foot Pads.
• Strong Adhesives Felt Foot Pads,Chrome Plated Bathroom Accessories Kit. Also,Accessories,3D Printer V-Wheel.

Winding

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

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Electronic Cigarette Atomizer Hood, 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,CNC Axis Types. The rope-Aluminum Bar.

Drawing tow

• 1 Newly-CNC Milling Machine Parts.Milling Small Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,Hardware Decoration, at a rate of 9-15 crimps per inch (3-6 per cm).High Speed CNC Milling.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Cell Phone Frame.Mobile Phone Frame.

Cutting

• 4 Following heat setting,Die head. 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)CNC Parts Manufacturer.Unmanned Plane Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)CNC Lathe Parts Charging Pile.

The Future

Assembled box,Light Cover's fastest-growing fiber.Lamp Housing. 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,Medical Instrument Parts, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Surgical Instrument Parts. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.CNC Machining Medical Devices, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.