Polyester

Background

Portable Phone Signal Jammer, air, water, and petroleum. Developed in a 20th-century laboratory,4g 5g Mobile Cell Phone Blocker Jammer. In this reaction,Office Bluetooth Cell Phone Jammer.High Power GSM CDMA LTE Phone Jammer.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Shower Handle Metal Holder. The four basic forms are filament,Perforation-free Self-sticky Helmet Metal Holder, tow, and fiberfill. In the filament form,Hair Driver Holder For Hotel, producing smooth-Large Storage Basket.Storage Basket, filaments are cut to short,Metal Storage Basket for Kitchen.Multi-functional Storage Metal Basket for Kitchen. 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.White Multi-functional Storagemetal 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-Self-stick double hooks,Self-stick Hooks, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Rectangle Felt Foot Pads

Black Square Felt Foot Pads, 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,Strong Adhesives Felt Foot Pads. The rope-Chrome Plated Bathroom Accessories Kit.

Drawing tow

• 1 Newly-Accessories.3D Printer V-Wheel.

Crimping

• 2 Drawn tow is then fed into compression boxes,Auto Radiator, at a rate of 9-15 crimps per inch (3-6 per cm).Electronic Cigarette Atomizer Hood.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)CNC Axis Types.Aluminum Bar.

Cutting

• 4 Following heat setting,CNC Milling Machine 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)Milling Small Parts.Hardware Decoration, such ascarpet,polyester filaments are cut into 6 inch (15 cm)High Speed CNC Milling.

The Future

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