Polyester

Background

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

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

History

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

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,Hair Driver Holder For Hotel. In this process, ethylene is the polymer, the chemical building block of polyester,Large Storage Basket.

The Manufacturing
Process

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

Drying

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

Winding

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

Accessories

3D Printer V-Wheel, 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,Auto Radiator. The rope-Electronic Cigarette Atomizer Hood.

Drawing tow

• 1 Newly-CNC Axis Types.Aluminum Bar.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Hardware Decoration.High Speed CNC Milling.

Cutting

• 4 Following heat setting,Cell Phone Frame. 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)Mobile Phone Frame.Die head, such ascarpet,polyester filaments are cut into 6 inch (15 cm)CNC Parts Manufacturer.

The Future

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