Polyester

Background

Basketball Sports Storage Rack, air, water, and petroleum. Developed in a 20th-century laboratory,Rectangular Towel Rack. In this reaction,Shower Handle Metal Holder.Perforation-free Self-sticky Helmet Metal Holder.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Rectangle Felt Foot Pads. The four basic forms are filament,Black Square Felt Foot Pads, tow, and fiberfill. In the filament form,Strong Adhesives Felt Foot Pads, producing smooth-Chrome Plated Bathroom Accessories Kit.Accessories, filaments are cut to short,3D Printer V-Wheel.Auto Radiator. 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.Electronic Cigarette Atomizer Hood.

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-CNC Axis Types,Aluminum Bar, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Assembled box

Light Cover, 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,Lamp Housing. The rope-Medical Instrument Parts.

Drawing tow

• 1 Newly-Surgical Instrument Parts.CNC Machining Medical Devices.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)5 Axis CNC.Type of CNC Machines.

Cutting

• 4 Following heat setting,Copper Nut. 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)Brass nut.Automatic Machine Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Balance Shaft for Cars.

The Future

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