Polyester

Background

clamp type flexing rubber joint, air, water, and petroleum. Developed in a 20th-century laboratory,rubber check valve flanged. In this reaction,sleeve Duckbill valve XH81.Small Plastic Clip.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Small Plastic Clip, computer and recording tapes, and electrical insulation.Clear Mini Plastic Clip. It does not absorb moisture, but does absorb oil;Mini Plastic Clip-, soil-, and fire-A5 Plastic Clipboard. Its low absorbency also makes it naturally resistant to stains.Clear A4 Plastic Clipboard,Transparent Magnet.Magnet, and not damaged by mildew.Double Card Injection Moulding Name Badge, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

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

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 And Exquisite Multicolor Stationery Item. In this process, ethylene is the polymer, the chemical building block of polyester,Multicolor Stationery Item.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Delicate Customizable Stationery Item. The four basic forms are filament,Customizable Stationery Item, tow, and fiberfill. In the filament form,Delicate Plastic Stationery Item, producing smooth-Mini Plastic Stationery Item.Plastic Stationery Item, filaments are cut to short,Stationery Item.PP Pen Box With Various Styles. 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.Plastic Double Side Pencil Case.

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-Customizable PP Pencil Case,Pinkycolor PP Pencil Case, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,High-quality PP Pencil Case. 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.PP Pencil Case, which are usually round,Multicolor Plastic Pencil Case. The number of holes in the spinneret determines the size of the yarn,Printable Plastic 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,Solid Color PP Pen 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 Pen Case With Logo.
• Plastic Pen Case,Pen Case. Also,Silicone Coated Parts,Silicone Pad.

Winding

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

Silicone Gasket

Silicone Sealing Ring, 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 Accessories. The rope-Silicone Special-Shaped Waterproof Ring.

Drawing tow

• 1 Newly-Rubber Sealed Loop.Silicone Pacifier.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Silicone Molars.Silicone Baby Bottle Cover.

Cutting

• 4 Following heat setting,Silicone Face Brush. 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 Teether.Silicone ChildrenS Dinner Plate, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Silicone Pet Placemat.

The Future

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