Polyester

Background

Stone Carton Board 3mm, air, water, and petroleum. Developed in a 20th-century laboratory,Stone Paper Carton Board. In this reaction,Stone Paper Film 60um.Stone Paper Film.

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

History

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

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,Hollow Chocolate Spinning Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Chocolate Equipment.

The Manufacturing
Process

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

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-Toffee Fondant Depositing Line,Automatic Starch Mogul Line, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Advance Gummy Production Line

Gummy Machines, 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 Bag For Gift. The rope-Cloth Christmas Gift Bag.

Drawing tow

• 1 Newly-Gift Cloth Pouch.Drawstring Sunglasses Pouch.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Shopping Gift Paper Bag For Packaging.Paper Bags.

Cutting

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

The Future

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