Polyester

Background

Full Automatic Marshmallow Production Line, air, water, and petroleum. Developed in a 20th-century laboratory,Deposited Marshmallow Line. In this reaction,Full Automatic Extruded Marshmallow Production Line.Popping Boba Line.

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

History

In 1926,Chocolate Moulds-based E.I. du Pont de Nemours and Co.Hollow Chocolate Spinning Machine. This early research, headed by W.H. Carothers,Chocolate Equipment, 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,Sandwiching and Packaging. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Rotary Rack Oven,Rack Oven. 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.Automatic Multifunctional Biscuit Production Line, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Automatic Multifunctional Biscuit Production Line.

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,Soft Biscuit Rotary Moulder. In this process, ethylene is the polymer, the chemical building block of polyester,Biscuit Stacking Machine.

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Advance Rasing Film Vacuum Cooker. 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.Vacuum Batch Type Cooker, which are usually round,Gummy Kitchen System. The number of holes in the spinneret determines the size of the yarn,Advance Gummy 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,Gummy Machines. 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,Cloth Bag For Gift.
• Cloth Christmas Gift Bag,Gift Cloth Pouch. Also,Drawstring Sunglasses Pouch,Microfiber Pouch.

Winding

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

Printing Paper Shopping Bag

Shopping Gift Paper Bag For Packaging, 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,Paper Bags. The rope-Soft Microfiber Cleaning Cloth For Jewelry.

Drawing tow

• 1 Newly-Jewelry Polishing Cleaning Cloth Printed.Microfiber Camera Cleaning Cloth.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Packaging For Sunglasses.Spectacle Frame Box.

Cutting

• 4 Following heat setting,Black Sunglasses Case Packaging. 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)Sunglasses Product Packaging.Paper Packaging Box For Eyeglasses Frames, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Corrugated PVC Suction Hose.

The Future

Clear And Transparent PVC Tubing,PVC Clear Hose's fastest-growing fiber.General Purpose 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,Non-kink PVC Garden Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Home PVC Garden Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Flexible 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.