Polyester

Background

rubber compensator, air, water, and petroleum. Developed in a 20th-century laboratory,rectangular rubber flue compensatio. In this reaction,Fabric And Non-metallic Compensator.Lateral Corrugated Compensator.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Axial Corrugated Compensator, computer and recording tapes, and electrical insulation.PTFE Lined Stainless Steel Bellows Compensator. It does not absorb moisture, but does absorb oil;Large Gap In Board Boxes Corrugated Compensator-, soil-, and fire-Angular Pressure Balance Bellows Compensator. Its low absorbency also makes it naturally resistant to stains.Stainless Steel Flexible Hose Flange,Loose Flanges Stainless Steel Hose.PTFE lined stainless steel hose, and not damaged by mildew.Silica Cloth, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Rtangular Fue Fbric Cmpensator-based E.I. du Pont de Nemours and Co.Fabric And Non-metallic Compensator. This early research, headed by W.H. Carothers,rectangular rubber flue compensation, 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,circular rubber flue compensator. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.rubber compensator,rubber flue duct expansion joint. 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.flexible joint, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Large Flexivity Expansion Joint.

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,Couplings joint. In this process, ethylene is the polymer, the chemical building block of polyester,gland type limited expansion joint.

The Manufacturing
Process

Polyester is manufactured by one of several methods.single flange dismantling joint. The four basic forms are filament,Dismantling Duble Fange Dsmantling Joint, tow, and fiberfill. In the filament form,single sphere rubber joint, producing smooth-DIN rubber expansion joint.EPDM rubber expansion joint, filaments are cut to short,concentric reducer rubber joint.clamp type flexing rubber joint. 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.rubber check valve flanged.

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-sleeve Duckbill valve XH81,Small Plastic Clip, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Small Plastic Clip. 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.Clear Mini Plastic Clip, which are usually round,Mini Plastic Clip. The number of holes in the spinneret determines the size of the yarn,A5 Plastic Clipboard.
• 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,Clear A4 Plastic Clipboard. 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,Transparent Magnet.
• Magnet,Double Card Injection Moulding Name Badge. Also,PS Injection Moulding Name Badge,Injection Moulding Name Badge.

Winding

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

PVC Frosted Name Badge

Frosted Name Badge With Metal Clip, 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,Frosted Name Badge. The rope-Printable Heart Shape Mini Cutter.

Drawing tow

• 1 Newly-Heart Shape Mini Cutter.Clear Circle Shape Mini Cutter.

Crimping

• 2 Drawn tow is then fed into compression boxes,Small And Exquisite Multicolor Stationery Item, at a rate of 9-15 crimps per inch (3-6 per cm).Multicolor Stationery Item.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Delicate Customizable Stationery Item.Customizable Stationery Item.

Cutting

• 4 Following heat setting,Delicate Plastic Stationery Item. 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)Mini Plastic Stationery Item.Plastic Stationery Item, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Stationery Item.

The Future

PP Pen Box With Various Styles,Plastic Double Side Pencil Case's fastest-growing fiber.Customizable PP Pencil Case. 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,Pinkycolor PP Pencil Case, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,High-quality PP Pencil Case. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.PP Pencil Case, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.