Polyester

Background

Hexagon Socket Nut, air, water, and petroleum. Developed in a 20th-century laboratory,Hexagon Nut. In this reaction,Hand Tightening Screw.Hand Screw.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Quincunx Slotted Round Head Screw, computer and recording tapes, and electrical insulation.Quincunx Slotted Cylindrical Head Screw. It does not absorb moisture, but does absorb oil;Hexagon Socket Knurled Cylindrical Head Screw-, soil-, and fire-Hexagon Socket Countersunk Head Screw. Its low absorbency also makes it naturally resistant to stains.Hexagon Socket Machine Screw,Slotted Round Head Screw.Slotting Machine Screw, and not damaged by mildew.Screw, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Long Bolt With Washer-based E.I. du Pont de Nemours and Co.Multi Purpose Bolt. This early research, headed by W.H. Carothers,Anchor Bolt, 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,Eyebolt. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Flower Basket Bolt,Handle Cam Rod Bolt. 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.Other Bolts, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Hexagon Bolt With Intermediate.

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,Hexagon Head Bolt. In this process, ethylene is the polymer, the chemical building block of polyester,Round Head Bolt.

The Manufacturing
Process

Polyester is manufactured by one of several methods.T-shaped Countersunk Head Bolt. The four basic forms are filament,Hexagon Socket Countersunk Head Bolt, tow, and fiberfill. In the filament form,Cross Countersunk Head Bolt, producing smooth-Countersunk Head Bolt.Bolt, filaments are cut to short,300ML Electric adhesive dispensing gun.Electric Adhesive Dispensing Gun. 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.Manual Adhesive Dispensing Gun.

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-250ML Pneumatic Adhesive Dispenser Application,Pneumatic Adhesive Dispensing Gun, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Manual Adhesive Dispenser. 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.Electric Adhesive Dispenser, which are usually round,Pneumatic Adhesive Dispenser. The number of holes in the spinneret determines the size of the yarn,HEPA Media Pads And Rolls Air Filtration For Pocket Type.
• 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,HEPA Media Pads And Rolls Air Filtration For All Hepa Composite Base Fabric. 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,HEPA Media Pads And Rolls Air Filtration For All Medium.
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Winding

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

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HEPA Senior Effective Radicel Extend Surface Carbon V Style Air Filter, 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,HEPA Senior Effective Radicel Box Air Filter With Clean Room. The rope-HEPA Senior Effective Radicel Box Air Filter For Clapboard.

Drawing tow

• 1 Newly-Medium Effective Finepak Pocket Air Filter Media F5.Medium Effective Finepak Pocket Or Bag Air Filter.

Crimping

• 2 Drawn tow is then fed into compression boxes,Medium Effective Finepak Box Air Filter With Clapboard F7, at a rate of 9-15 crimps per inch (3-6 per cm).Primary Effective Prepak Effect Panel Air Filter.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Primary Effective Prepak Keel Bracket Air Filter.Q-light small LED indicator light S80L.

Cutting

• 4 Following heat setting,Induction Loop Controller. 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)Nylon Cable Tie.Anti-UV PA66 Nylon Cable Tie, such ascarpet,polyester filaments are cut into 6 inch (15 cm)New Product Nylon Cable Ties with good price.

The Future

Vehicle Restraint with good price,Vehicle Restraint's fastest-growing fiber.Vehicle Restraint. 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,Dock Seal, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Inflatable Dock Shelter. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Adjustable Dock Seal, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.