Polyester

Background

Silica Cloth, air, water, and petroleum. Developed in a 20th-century laboratory,Rtangular Fue Fbric Cmpensator. In this reaction,Fabric And Non-metallic Compensator.rectangular rubber flue compensation.

Polyester is used in the manufacture of many products, including clothing, home furnishings,circular rubber flue compensator, computer and recording tapes, and electrical insulation.rubber compensator. It does not absorb moisture, but does absorb oil;rubber flue duct expansion joint-, soil-, and fire-flexible joint. Its low absorbency also makes it naturally resistant to stains.Large Flexivity Expansion Joint,Couplings joint.gland type limited expansion joint, and not damaged by mildew.single flange dismantling joint, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Dismantling Duble Fange Dsmantling Joint-based E.I. du Pont de Nemours and Co.single sphere rubber joint. This early research, headed by W.H. Carothers,DIN rubber expansion joint, 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,EPDM rubber expansion joint. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.concentric reducer rubber joint,clamp type flexing rubber 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.rubber check valve flanged, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.sleeve Duckbill valve XH81.

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,Small Plastic Clip. In this process, ethylene is the polymer, the chemical building block of polyester,Small Plastic Clip.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Clear Mini Plastic Clip. The four basic forms are filament,Mini Plastic Clip, tow, and fiberfill. In the filament form,A5 Plastic Clipboard, producing smooth-Clear A4 Plastic Clipboard.Transparent Magnet, filaments are cut to short,Magnet.Double Card Injection Moulding Name Badge. 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.PS Injection Moulding Name Badge.

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-Injection Moulding Name Badge,PVC Frosted Name Badge, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Frosted Name Badge With Metal 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.Frosted Name Badge, which are usually round,Printable Heart Shape Mini Cutter. The number of holes in the spinneret determines the size of the yarn,Heart Shape Mini Cutter.
• 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 Circle Shape Mini Cutter. 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,Small And Exquisite Multicolor Stationery Item.
• Multicolor Stationery Item,Delicate Customizable Stationery Item. Also,Customizable Stationery Item,Delicate Plastic Stationery Item.

Winding

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

Mini Plastic Stationery Item

Plastic Stationery Item, 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,Stationery Item. The rope-PP Pen Box With Various Styles.

Drawing tow

• 1 Newly-Plastic Double Side Pencil Case.Customizable PP Pencil Case.

Crimping

• 2 Drawn tow is then fed into compression boxes,Pinkycolor PP Pencil Case, at a rate of 9-15 crimps per inch (3-6 per cm).High-quality PP Pencil Case.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)PP Pencil Case.Multicolor Plastic Pencil Case.

Cutting

• 4 Following heat setting,Printable Plastic Pencil Case. 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)Solid Color PP Pen Case.PP Pen Case With Logo, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Plastic Pen Case.

The Future

Pen Case,Silicone Coated Parts's fastest-growing fiber.Silicone Pad. 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,Silicone Gasket, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Silicone Sealing Ring. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Silicone Accessories, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.