Polyester

Background

sleeve Duckbill valve XH81, air, water, and petroleum. Developed in a 20th-century laboratory,Small Plastic Clip. In this reaction,Small Plastic Clip.Clear Mini Plastic Clip.

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

History

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

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,Delicate Customizable Stationery Item. In this process, ethylene is the polymer, the chemical building block of polyester,Customizable Stationery Item.

The Manufacturing
Process

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

Drying

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

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 Accessories

Silicone Special-Shaped Waterproof 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,Rubber Sealed Loop. The rope-Silicone Pacifier.

Drawing tow

• 1 Newly-Silicone Nail Pad.Silicone Beauty Scrubbing Pad.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Silicone Face Brush.Silicone Teether.

Cutting

• 4 Following heat setting,Silicone ChildrenS Dinner Plate. 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 Pet Placemat.Silicone Pet Slow Food Device, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Silicone Pet Foot Washing Cup.

The Future

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