Polyester

Background

single sphere rubber joint, air, water, and petroleum. Developed in a 20th-century laboratory,DIN rubber expansion joint. In this reaction,EPDM rubber expansion joint.concentric reducer rubber joint.

Polyester is used in the manufacture of many products, including clothing, home furnishings,clamp type flexing rubber joint, computer and recording tapes, and electrical insulation.rubber check valve flanged. It does not absorb moisture, but does absorb oil;sleeve Duckbill valve XH81-, soil-, and fire-Small Plastic Clip. Its low absorbency also makes it naturally resistant to stains.Small Plastic Clip,Clear Mini Plastic Clip.Mini Plastic Clip, and not damaged by mildew.A5 Plastic Clipboard, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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,Frosted Name Badge. In this process, ethylene is the polymer, the chemical building block of polyester,Printable Heart Shape Mini Cutter.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Heart Shape Mini Cutter. The four basic forms are filament,Clear Circle Shape Mini Cutter, tow, and fiberfill. In the filament form,Small And Exquisite Multicolor Stationery Item, producing smooth-Multicolor Stationery Item.Delicate Customizable Stationery Item, filaments are cut to short,Customizable Stationery Item.Delicate Plastic 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.Mini Plastic 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-Plastic Stationery Item,Stationery Item, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Plastic Pen Case

Pen Case, 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,Silicone Coated Parts. The rope-Silicone Pad.

Drawing tow

• 1 Newly-Silicone Gasket.Silicone Sealing Ring.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Rubber Sealed Loop.Silicone Pacifier.

Cutting

• 4 Following heat setting,Silicone Nail Pad. 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 Beauty Scrubbing Pad.Silicone Molars, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Silicone Baby Bottle Cover.

The Future

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