Polyester

Background

Bathroom Glass Shelf with Round Base, air, water, and petroleum. Developed in a 20th-century laboratory,Glass Shelf. In this reaction,Perforation-free Wall-mounted Storage Plastic Box.Perforation-free Wall-mounted Hair Dryer Storage Plastic Box.

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

History

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

The Manufacturing
Process

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

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-adhesive Felt Foot Pads Furniture,Felt Foot Pads For Desk Legs, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Rectangle Felt 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 Square Felt Foot Pads, which are usually round,Strong Adhesives Felt Foot Pads. The number of holes in the spinneret determines the size of the yarn,Chrome Plated Bathroom Accessories Kit.
• 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,Accessories. 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,3D Printer V-Wheel.
• Auto Radiator,Electronic Cigarette Atomizer Hood. Also,CNC Axis Types,Aluminum Bar.

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 Milling Machine Parts

Milling Small Parts, 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,Hardware Decoration. The rope-High Speed CNC Milling.

Drawing tow

• 1 Newly-Cell Phone Frame.Mobile Phone Frame.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Unmanned Plane Parts.CNC Lathe Parts Charging Pile.

Cutting

• 4 Following heat setting,Assembled box. 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)Light Cover.Lamp Housing, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Medical Instrument Parts.

The Future

Surgical Instrument Parts,CNC Machining Medical Devices's fastest-growing fiber.Flashlight 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,Camera cover, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,5 Axis CNC. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Type of CNC Machines, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.