Polyester

Background

Stone Paper Bags, air, water, and petroleum. Developed in a 20th-century laboratory,Stone Paper Books. In this reaction,Stone Paper Eco Friendly Tissue Holder.Stone Carton Board 2mm.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Stone Carton Board 3mm, computer and recording tapes, and electrical insulation.Stone Paper Carton Board. It does not absorb moisture, but does absorb oil;Stone Paper Film 60um-, soil-, and fire-Stone Paper Film. Its low absorbency also makes it naturally resistant to stains.Stone Card Paper 250um,Stone Paper 180um.Stone Paper Soft, and not damaged by mildew.Full Automatic Marshmallow Production Line, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Deposited Marshmallow Line-based E.I. du Pont de Nemours and Co.Full Automatic Extruded Marshmallow Production Line. This early research, headed by W.H. Carothers,Popping Boba Line, 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,Chocolate Blocks Guitar Cutter. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Chocolate Slicing Machine,Small Chocolate Machine. 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.Chocolate Enrobing Line, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Chocolate Tempering Machine.

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,Chocolate Blocks Crusher. In this process, ethylene is the polymer, the chemical building block of polyester,Chocolate Paste Making Equipment.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Chocolate Forming Moulds. The four basic forms are filament,Chocolate Moulds, tow, and fiberfill. In the filament form,Hollow Chocolate Spinning Machine, producing smooth-Chocolate Equipment.Sandwiching and Packaging, filaments are cut to short,Rotary Rack Oven.Rack Oven. 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.Automatic Multifunctional Biscuit Production Line.

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-Automatic Multifunctional Biscuit Production Line,Soft Biscuit Rotary Moulder, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Biscuit Stacking Machine. 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.Biscuit Equipment, which are usually round,Toffee Fondant Depositing Line. The number of holes in the spinneret determines the size of the yarn,Automatic Starch Mogul Line.
• 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,Die Formed Lollipop Production Line. 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,Hard Candy Depositing Line.
• Automatic Drying System,Automatic Cereal Bar Line. Also,Extruding Type Konjac Ball Production Line,Aluminium Moulds and Silicon.

Winding

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

Gummy Moving Cart

Advance Rasing Film Vacuum Cooker, 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,Vacuum Batch Type Cooker. The rope-Gummy Kitchen System.

Drawing tow

• 1 Newly-Advance Gummy Production Line.Gummy Machines.

Crimping

• 2 Drawn tow is then fed into compression boxes,Cloth Bag For Gift, at a rate of 9-15 crimps per inch (3-6 per cm).Cloth Christmas Gift Bag.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Gift Cloth Pouch.Drawstring Sunglasses Pouch.

Cutting

• 4 Following heat setting,Microfiber Pouch. 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)Printing Paper Shopping Bag.Shopping Gift Paper Bag For Packaging, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Paper Bags.

The Future

Soft Microfiber Cleaning Cloth For Jewelry,Jewelry Polishing Cleaning Cloth Printed's fastest-growing fiber.Microfiber Camera Cleaning Cloth. 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,Camera Cleaning Cloth, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Cleaning Cloth For Eyeglasses. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Packaging For Sunglasses, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.