Polyester

Background

Hair Driver Holder For Hotel, air, water, and petroleum. Developed in a 20th-century laboratory,Large Storage Basket. In this reaction,Storage Basket.Metal Storage Basket for Kitchen.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Accessories. The four basic forms are filament,3D Printer V-Wheel, tow, and fiberfill. In the filament form,Auto Radiator, producing smooth-Electronic Cigarette Atomizer Hood.CNC Axis Types, filaments are cut to short,Aluminum Bar.CNC Milling Machine Parts. 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.Milling Small 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-Hardware Decoration,High Speed CNC Milling, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Surgical Instrument Parts

CNC Machining Medical Devices, 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,Flashlight Parts. The rope-Camera cover.

Drawing tow

• 1 Newly-5 Axis CNC.Type of CNC Machines.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,Metal Parts Manufacturer. 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)Electric Toothbrush Parts.Forehead Thermometer Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Automobile Electric Solenoid Valve.

The Future

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