Polyester

Background

single flange dismantling joint, air, water, and petroleum. Developed in a 20th-century laboratory,Dismantling Duble Fange Dsmantling Joint. In this reaction,single sphere rubber joint.DIN rubber expansion joint.

Polyester is used in the manufacture of many products, including clothing, home furnishings,EPDM rubber expansion joint, computer and recording tapes, and electrical insulation.concentric reducer rubber joint. It does not absorb moisture, but does absorb oil;clamp type flexing rubber joint-, soil-, and fire-rubber check valve flanged. Its low absorbency also makes it naturally resistant to stains.sleeve Duckbill valve XH81,Small Plastic Clip.Small Plastic Clip, and not damaged by mildew.Clear Mini Plastic Clip, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Mini Plastic Clip-based E.I. du Pont de Nemours and Co.A5 Plastic Clipboard. This early research, headed by W.H. Carothers,Clear A4 Plastic Clipboard, 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,Transparent Magnet. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Magnet,Double Card Injection Moulding Name Badge. 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.PS Injection Moulding Name Badge, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Injection Moulding Name Badge.

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,PVC Frosted Name Badge. In this process, ethylene is the polymer, the chemical building block of polyester,Frosted Name Badge With Metal Clip.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Frosted Name Badge. The four basic forms are filament,Printable Heart Shape Mini Cutter, tow, and fiberfill. In the filament form,Heart Shape Mini Cutter, producing smooth-Clear Circle Shape Mini Cutter.Small And Exquisite Multicolor Stationery Item, filaments are cut to short,Multicolor Stationery Item.Delicate Customizable Stationery Item. 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.Customizable Stationery Item.

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-Delicate Plastic Stationery Item,Mini Plastic Stationery Item, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Plastic Stationery Item. 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.Stationery Item, which are usually round,PP Pen Box With Various Styles. The number of holes in the spinneret determines the size of the yarn,Plastic Double Side Pencil Case.
• 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,Customizable PP Pencil Case. 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,Pinkycolor PP Pencil Case.
• High-quality PP Pencil Case,PP Pencil Case. Also,Multicolor Plastic Pencil Case,Printable Plastic Pencil Case.

Winding

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

Solid Color PP Pen Case

PP Pen Case With Logo, 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,Plastic Pen Case. The rope-Pen Case.

Drawing tow

• 1 Newly-Silicone Coated Parts.Silicone Pad.

Crimping

• 2 Drawn tow is then fed into compression boxes,Silicone Gasket, at a rate of 9-15 crimps per inch (3-6 per cm).Silicone Sealing Ring.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Silicone Accessories.Silicone Special-Shaped Waterproof Ring.

Cutting

• 4 Following heat setting,Rubber Sealed Loop. 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)Silicone Pacifier.Silicone Nail Pad, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Silicone Beauty Scrubbing Pad.

The Future

Silicone Molars,Silicone Baby Bottle Cover's fastest-growing fiber.Silicone Face Brush. 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 Teether, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Silicone ChildrenS Dinner Plate. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Silicone Pet Placemat, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.