Polyester

Background

Perforation-free Self-sticky Helmet Metal Holder, air, water, and petroleum. Developed in a 20th-century laboratory,Hair Driver Holder For Hotel. In this reaction,Large Storage Basket.Storage Basket.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Metal Storage Basket for Kitchen, computer and recording tapes, and electrical insulation.Multi-functional Storage Metal Basket for Kitchen. It does not absorb moisture, but does absorb oil;White Multi-functional Storagemetal Basket-, soil-, and fire-Self-stick double hooks. Its low absorbency also makes it naturally resistant to stains.Self-stick Hooks,Self-stick Hooks.New Style Metal Hooks, and not damaged by mildew.Over Door Metal Hooks, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Over Door Metal Hook with Basket-based E.I. du Pont de Nemours and Co.Telescoping Pedestal Paper Holder. This early research, headed by W.H. Carothers,Paper 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,Rubber Foot Pads. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Black Felt Foot Pads,Self-adhesive Felt Foot Pads Furniture. 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.Felt Foot Pads For Desk Legs, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rectangle Felt Foot Pads.

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,Black Square Felt Foot Pads. In this process, ethylene is the polymer, the chemical building block of polyester,Strong Adhesives Felt Foot Pads.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Chrome Plated Bathroom Accessories Kit. The four basic forms are filament,Accessories, tow, and fiberfill. In the filament form,3D Printer V-Wheel, producing smooth-Auto Radiator.Electronic Cigarette Atomizer Hood, filaments are cut to short,CNC Axis Types.Aluminum Bar. 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.CNC Milling Machine Parts.

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-Milling Small Parts,Hardware Decoration, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,High Speed CNC Milling. 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.Cell Phone Frame, which are usually round,Mobile Phone Frame. The number of holes in the spinneret determines the size of the yarn,Die head.
• 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,CNC Parts Manufacturer. 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,Unmanned Plane Parts.
• CNC Lathe Parts Charging Pile,Assembled box. Also,Light Cover,Lamp Housing.

Winding

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

Medical Instrument Parts

Surgical Instrument 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,CNC Machining Medical Devices. The rope-Flashlight Parts.

Drawing tow

• 1 Newly-Camera cover.5 Axis CNC.

Crimping

• 2 Drawn tow is then fed into compression boxes,Type of CNC Machines, at a rate of 9-15 crimps per inch (3-6 per cm).Copper Nut.

Setting

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

Cutting

• 4 Following heat setting,Balance Shaft for Cars. 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)Metal Parts Manufacturer.Electric Toothbrush Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Forehead Thermometer Parts.

The Future

Automobile Electric Solenoid Valve,Face Mask Machine Parts's fastest-growing fiber.Massage Chair 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,Massage Push Rod of Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Small radar cover. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Twist Pin, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.