Polyester

Background

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

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

History

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

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Round Head Bolt. The four basic forms are filament,T-shaped Countersunk Head Bolt, tow, and fiberfill. In the filament form,Hexagon Socket Countersunk Head Bolt, producing smooth-Cross Countersunk Head Bolt.Countersunk Head Bolt, filaments are cut to short,Bolt.300ML 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.Electric 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-Manual Adhesive Dispensing Gun,250ML Pneumatic Adhesive Dispenser Application, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

HEPA Senior Effective Radicel Hepa Liquid Air Filter

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

Drawing tow

• 1 Newly-HEPA Senior Effective Radicel Box Air Filter For Clapboard.Medium Effective Finepak Pocket Air Filter Media F5.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Primary Effective Prepak Effect Panel Air Filter.Primary Effective Prepak Keel Bracket Air Filter.

Cutting

• 4 Following heat setting,Q-light small LED indicator light S80L. 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)Induction Loop Controller.Nylon Cable Tie, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Anti-UV PA66 Nylon Cable Tie.

The Future

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