Polyester

Background

Office Bluetooth Cell Phone Jammer, air, water, and petroleum. Developed in a 20th-century laboratory,High Power GSM CDMA LTE Phone Jammer. In this reaction,Phone Signal Jammer.Furniture Felt Roll.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Felt Roll, computer and recording tapes, and electrical insulation.400mm Double Layers Folding Shelf. It does not absorb moisture, but does absorb oil;300mm Double Layers Folding Shelf-, soil-, and fire-Folding Shelf. Its low absorbency also makes it naturally resistant to stains.Bathroom Glass Shelf with Round Base,Glass Shelf.Perforation-free Wall-mounted Storage Plastic Box, and not damaged by mildew.Perforation-free Wall-mounted Hair Dryer Storage Plastic Box, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Plastic Box-based E.I. du Pont de Nemours and Co.Bathroom Metal Towel Rack With Glass Panel. This early research, headed by W.H. Carothers,Bathroom Metal Towel 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,Metal Towel Rack. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Popular Metal Tissue Holder,Tissue 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.Basketball Sports Storage Rack, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rectangular Towel Rack.

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,Shower Handle Metal Holder. In this process, ethylene is the polymer, the chemical building block of polyester,Perforation-free Self-sticky Helmet Metal Holder.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Hair Driver Holder For Hotel. The four basic forms are filament,Large Storage Basket, tow, and fiberfill. In the filament form,Storage Basket, producing smooth-Metal Storage Basket for Kitchen.Multi-functional Storage Metal Basket for Kitchen, filaments are cut to short,White Multi-functional Storagemetal Basket.Self-stick double 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.Self-stick Hooks.

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-Self-stick Hooks,New Style Metal Hooks, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Over Door Metal Hooks. 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.Over Door Metal Hook with Basket, which are usually round,Telescoping Pedestal Paper Holder. The number of holes in the spinneret determines the size of the yarn,Paper Holder.
• 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,Rubber 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 Felt Foot Pads.
• Self-adhesive Felt Foot Pads Furniture,Felt Foot Pads For Desk Legs. Also,Rectangle Felt Foot Pads,Black Square Felt Foot Pads.

Winding

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

Strong Adhesives Felt Foot Pads

Chrome Plated Bathroom Accessories Kit, 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,Accessories. The rope-3D Printer V-Wheel.

Drawing tow

• 1 Newly-Auto Radiator.Electronic Cigarette Atomizer Hood.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)CNC Milling Machine Parts.Milling Small Parts.

Cutting

• 4 Following heat setting,Hardware Decoration. 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)High Speed CNC Milling.Cell Phone Frame, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Mobile Phone Frame.

The Future

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