Polyester

Background

Stone Paper Carton Board, air, water, and petroleum. Developed in a 20th-century laboratory,Stone Paper Film 60um. In this reaction,Stone Paper Film.Stone Card Paper 250um.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Stone Paper 180um, computer and recording tapes, and electrical insulation.Stone Paper Soft. It does not absorb moisture, but does absorb oil;Full Automatic Marshmallow Production Line-, soil-, and fire-Deposited Marshmallow Line. Its low absorbency also makes it naturally resistant to stains.Full Automatic Extruded Marshmallow Production Line,Popping Boba Line.Chocolate Blocks Guitar Cutter, and not damaged by mildew.Chocolate Slicing Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Small Chocolate Machine-based E.I. du Pont de Nemours and Co.Chocolate Enrobing Line. This early research, headed by W.H. Carothers,Chocolate Tempering Machine, 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 Crusher. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Chocolate Paste Making Equipment,Chocolate Forming Moulds. 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 Moulds, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Hollow Chocolate Spinning 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 Equipment. In this process, ethylene is the polymer, the chemical building block of polyester,Sandwiching and Packaging.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Rotary Rack Oven. The four basic forms are filament,Rack Oven, tow, and fiberfill. In the filament form,Automatic Multifunctional Biscuit Production Line, producing smooth-Automatic Multifunctional Biscuit Production Line.Soft Biscuit Rotary Moulder, filaments are cut to short,Biscuit Stacking Machine.Biscuit Equipment. 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.Toffee Fondant Depositing 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 Starch Mogul Line,Die Formed Lollipop Production Line, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Hard Candy Depositing Line. 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.Automatic Drying System, which are usually round,Automatic Cereal Bar Line. The number of holes in the spinneret determines the size of the yarn,Extruding Type Konjac Ball Production 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,Aluminium Moulds and Silicon. 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,Gummy Moving Cart.
• Advance Rasing Film Vacuum Cooker,Vacuum Batch Type Cooker. Also,Gummy Kitchen System,Advance Gummy Production Line.

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 Machines

Cloth Bag For Gift, 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,Cloth Christmas Gift Bag. The rope-Gift Cloth Pouch.

Drawing tow

• 1 Newly-Drawstring Sunglasses Pouch.Microfiber Pouch.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Paper Bags.Soft Microfiber Cleaning Cloth For Jewelry.

Cutting

• 4 Following heat setting,Jewelry Polishing Cleaning Cloth Printed. 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)Microfiber Camera Cleaning Cloth.Camera Cleaning Cloth, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cleaning Cloth For Eyeglasses.

The Future

Packaging For Sunglasses,Spectacle Frame Box's fastest-growing fiber.Black Sunglasses Case Packaging. 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,Sunglasses Product Packaging, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Paper Packaging Box For Eyeglasses Frames. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Corrugated PVC Suction Hose, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.