Polyester

Background

Full Automatic Extruded Marshmallow Production Line, air, water, and petroleum. Developed in a 20th-century laboratory,Popping Boba Line. In this reaction,Chocolate Blocks Guitar Cutter.Chocolate Slicing Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Small Chocolate Machine, computer and recording tapes, and electrical insulation.Chocolate Enrobing Line. It does not absorb moisture, but does absorb oil;Chocolate Tempering Machine-, soil-, and fire-Chocolate Blocks Crusher. Its low absorbency also makes it naturally resistant to stains.Chocolate Paste Making Equipment,Chocolate Forming Moulds.Chocolate Moulds, and not damaged by mildew.Hollow Chocolate Spinning Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Chocolate Equipment-based E.I. du Pont de Nemours and Co.Sandwiching and Packaging. This early research, headed by W.H. Carothers,Rotary Rack Oven, 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,Rack Oven. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Automatic Multifunctional Biscuit Production Line,Automatic Multifunctional Biscuit Production Line. 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.Soft Biscuit Rotary Moulder, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Biscuit Stacking 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,Biscuit Equipment. In this process, ethylene is the polymer, the chemical building block of polyester,Toffee Fondant Depositing Line.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Automatic Starch Mogul Line. The four basic forms are filament,Die Formed Lollipop Production Line, tow, and fiberfill. In the filament form,Hard Candy Depositing Line, producing smooth-Automatic Drying System.Automatic Cereal Bar Line, filaments are cut to short,Extruding Type Konjac Ball Production Line.Aluminium Moulds and Silicon. 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.Gummy Moving Cart.

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-Advance Rasing Film Vacuum Cooker,Vacuum Batch Type Cooker, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Gummy Kitchen System. 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.Advance Gummy Production Line, which are usually round,Gummy Machines. The number of holes in the spinneret determines the size of the yarn,Cloth Bag For Gift.
• 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,Cloth Christmas Gift Bag. 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,Gift Cloth Pouch.
• Drawstring Sunglasses Pouch,Microfiber Pouch. Also,Printing Paper Shopping Bag,Shopping Gift Paper Bag For Packaging.

Winding

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

Paper Bags

Soft Microfiber Cleaning Cloth For Jewelry, 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,Jewelry Polishing Cleaning Cloth Printed. The rope-Microfiber Camera Cleaning Cloth.

Drawing tow

• 1 Newly-Camera Cleaning Cloth.Cleaning Cloth For Eyeglasses.

Crimping

• 2 Drawn tow is then fed into compression boxes,Packaging For Sunglasses, at a rate of 9-15 crimps per inch (3-6 per cm).Spectacle Frame Box.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Black Sunglasses Case Packaging.Sunglasses Product Packaging.

Cutting

• 4 Following heat setting,Paper Packaging Box For Eyeglasses Frames. 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)Corrugated PVC Suction Hose.Clear And Transparent PVC Tubing, such ascarpet,polyester filaments are cut into 6 inch (15 cm)PVC Clear Hose.

The Future

General Purpose PVC Garden Hose,Non-kink PVC Garden Hose's fastest-growing fiber.Home PVC Garden Hose. 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,Flexible PVC Garden Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Anti-UV PVC Garden Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.PVC Garden Hose, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.