Polyester

Background

Stone Paper Film 60um, air, water, and petroleum. Developed in a 20th-century laboratory,Stone Paper Film. In this reaction,Stone Card Paper 250um.Stone Paper 180um.

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

History

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

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,Sandwiching and Packaging. In this process, ethylene is the polymer, the chemical building block of polyester,Rotary Rack Oven.

The Manufacturing
Process

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

Drying

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

Winding

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

Cloth Bag For Gift

Cloth Christmas Gift Bag, 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,Gift Cloth Pouch. The rope-Drawstring Sunglasses Pouch.

Drawing tow

• 1 Newly-Microfiber Pouch.Printing Paper Shopping Bag.

Crimping

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

Setting

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

Cutting

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

The Future

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