Polyester

Background

300mm Double Layers Folding Shelf, air, water, and petroleum. Developed in a 20th-century laboratory,Folding Shelf. In this reaction,Bathroom Glass Shelf with Round Base.Glass Shelf.

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

History

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

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,Multi-functional Storage Metal Basket for Kitchen. In this process, ethylene is the polymer, the chemical building block of polyester,White Multi-functional Storagemetal Basket.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Self-stick double hooks. The four basic forms are filament,Self-stick Hooks, tow, and fiberfill. In the filament form,Self-stick Hooks, producing smooth-New Style Metal Hooks.Over Door Metal Hooks, filaments are cut to short,Over Door Metal Hook with Basket.Telescoping Pedestal Paper Holder. 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.Paper Holder.

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-Rubber Foot Pads,Black Felt Foot Pads, is extruded through a slot to form long ribbons.

Drying

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

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 Axis Types

Aluminum Bar, 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 Milling Machine Parts. The rope-Milling Small Parts.

Drawing tow

• 1 Newly-Hardware Decoration.High Speed CNC Milling.

Crimping

• 2 Drawn tow is then fed into compression boxes,Cell Phone Frame, at a rate of 9-15 crimps per inch (3-6 per cm).Mobile Phone Frame.

Setting

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

Cutting

• 4 Following heat setting,Unmanned Plane 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)CNC Lathe Parts Charging Pile.Assembled box, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Light Cover.

The Future

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