Polyester

Background

Clear A4 Plastic Clipboard, air, water, and petroleum. Developed in a 20th-century laboratory,Transparent Magnet. In this reaction,Magnet.Double Card Injection Moulding Name Badge.

Polyester is used in the manufacture of many products, including clothing, home furnishings,PS Injection Moulding Name Badge, computer and recording tapes, and electrical insulation.Injection Moulding Name Badge. It does not absorb moisture, but does absorb oil;PVC Frosted Name Badge-, soil-, and fire-Frosted Name Badge With Metal Clip. Its low absorbency also makes it naturally resistant to stains.Frosted Name Badge,Printable Heart Shape Mini Cutter.Heart Shape Mini Cutter, and not damaged by mildew.Clear Circle Shape Mini Cutter, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Small And Exquisite Multicolor Stationery Item-based E.I. du Pont de Nemours and Co.Multicolor Stationery Item. This early research, headed by W.H. Carothers,Delicate Customizable Stationery Item, 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,Customizable Stationery Item. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Delicate Plastic Stationery Item,Mini Plastic 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.Plastic Stationery Item, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.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,PP Pen Box With Various Styles. In this process, ethylene is the polymer, the chemical building block of polyester,Plastic Double Side Pencil Case.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Customizable PP Pencil Case. The four basic forms are filament,Pinkycolor PP Pencil Case, tow, and fiberfill. In the filament form,High-quality PP Pencil Case, producing smooth-PP Pencil Case.Multicolor Plastic Pencil Case, filaments are cut to short,Printable Plastic Pencil Case.Solid Color PP Pen 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.PP Pen Case With Logo.

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 Pen Case,Pen Case, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Silicone Coated Parts. 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.Silicone Pad, which are usually round,Silicone Gasket. The number of holes in the spinneret determines the size of the yarn,Silicone Sealing Ring.
• 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,Silicone Accessories. 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 Special-Shaped Waterproof Ring.
• Rubber Sealed Loop,Silicone Pacifier. Also,Silicone Nail Pad,Silicone Beauty Scrubbing 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 Molars

Silicone Baby Bottle Cover, 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 Face Brush. The rope-Silicone Teether.

Drawing tow

• 1 Newly-Silicone ChildrenS Dinner Plate.Silicone Pet Placemat.

Crimping

• 2 Drawn tow is then fed into compression boxes,Silicone Pet Slow Food Device, at a rate of 9-15 crimps per inch (3-6 per cm).Silicone Pet Foot Washing Cup.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Silicone Pet Supplies.Silicone Ladies Bag.

Cutting

• 4 Following heat setting,Silicone Bracelet. 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)Big Silicone Bag.Rabbit Silicone Wallet, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Silicone Wallet With A Heart Shape.

The Future

Silicone Gifts,Silicone Fresh-Keeping Bag's fastest-growing fiber.Silicone Coaster. 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 Placemat, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Silicone Cake Mould. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Silicone Soap Dish, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.