Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

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 Special-Shaped Waterproof Ring

Rubber Sealed Loop, 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 Pacifier. The rope-Silicone Nail Pad.

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

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