Polyester

Background

Fabric And Non-metallic Compensator, air, water, and petroleum. Developed in a 20th-century laboratory,Lateral Corrugated Compensator. In this reaction,Axial Corrugated Compensator.PTFE Lined Stainless Steel Bellows Compensator.

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

History

In 1926,rectangular rubber flue compensation-based E.I. du Pont de Nemours and Co.circular rubber flue compensator. This early research, headed by W.H. Carothers,rubber compensator, 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,rubber flue duct expansion joint. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.flexible joint,Large Flexivity 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.Couplings joint, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.gland type limited 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,single flange dismantling joint. In this process, ethylene is the polymer, the chemical building block of polyester,Dismantling Duble Fange Dsmantling Joint.

The Manufacturing
Process

Polyester is manufactured by one of several methods.single sphere rubber joint. The four basic forms are filament,DIN rubber expansion joint, tow, and fiberfill. In the filament form,EPDM rubber expansion joint, producing smooth-concentric reducer rubber joint.clamp type flexing rubber joint, filaments are cut to short,rubber check valve flanged.sleeve Duckbill valve XH81. 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.Small Plastic Clip.

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-Small Plastic Clip,Clear Mini Plastic Clip, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Frosted Name Badge

Printable Heart Shape Mini Cutter, 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,Heart Shape Mini Cutter. The rope-Clear Circle Shape Mini Cutter.

Drawing tow

• 1 Newly-Small And Exquisite Multicolor Stationery Item.Multicolor Stationery Item.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,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)Stationery Item.PP Pen Box With Various Styles, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Plastic Double Side Pencil Case.

The Future

Customizable PP Pencil Case,Pinkycolor PP Pencil Case's fastest-growing fiber.High-quality 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,PP Pencil Case, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Multicolor Plastic Pencil Case. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Printable Plastic 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.