Polyester

Background

Metal Storage Basket for Kitchen, air, water, and petroleum. Developed in a 20th-century laboratory,Multi-functional Storage Metal Basket for Kitchen. In this reaction,White Multi-functional Storagemetal Basket.Self-stick double hooks.

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

History

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

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,3D Printer V-Wheel. In this process, ethylene is the polymer, the chemical building block of polyester,Auto Radiator.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Electronic Cigarette Atomizer Hood. The four basic forms are filament,CNC Axis Types, tow, and fiberfill. In the filament form,Aluminum Bar, producing smooth-CNC Milling Machine Parts.Milling Small Parts, filaments are cut to short,Hardware Decoration.High Speed CNC Milling. 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.Cell Phone Frame.

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-Mobile Phone Frame,Die head, is extruded through a slot to form long ribbons.

Drying

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

Camera cover

5 Axis CNC, 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,Type of CNC Machines. The rope-Copper Nut.

Drawing tow

• 1 Newly-Brass nut.Automatic Machine Parts.

Crimping

• 2 Drawn tow is then fed into compression boxes,Balance Shaft for Cars, at a rate of 9-15 crimps per inch (3-6 per cm).Metal Parts Manufacturer.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Electric Toothbrush Parts.Forehead Thermometer Parts.

Cutting

• 4 Following heat setting,Automobile Electric Solenoid Valve. 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)Face Mask Machine Parts.Massage Chair Parts, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Massage Push Rod of Chair.

The Future

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