Polyester

Background

Aluminum Foil Bag, air, water, and petroleum. Developed in a 20th-century laboratory,Bags&Pouches. In this reaction,Stone Paper Bags.Stone Paper Books.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Stone Paper Eco Friendly Tissue Holder, computer and recording tapes, and electrical insulation.Stone Carton Board 2mm. It does not absorb moisture, but does absorb oil;Stone Carton Board 3mm-, soil-, and fire-Stone Paper Carton Board. Its low absorbency also makes it naturally resistant to stains.Stone Paper Film 60um,Stone Paper Film.Stone Card Paper 250um, and not damaged by mildew.Stone Paper 180um, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Stone Paper Soft-based E.I. du Pont de Nemours and Co.Full Automatic Marshmallow Production Line. This early research, headed by W.H. Carothers,Deposited Marshmallow 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,Full Automatic Extruded Marshmallow Production Line. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Popping Boba Line,Chocolate Blocks Guitar Cutter. 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 Slicing Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Small Chocolate 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 Enrobing Line. In this process, ethylene is the polymer, the chemical building block of polyester,Chocolate Tempering Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Chocolate Blocks Crusher. The four basic forms are filament,Chocolate Paste Making Equipment, tow, and fiberfill. In the filament form,Chocolate Forming Moulds, producing smooth-Chocolate Moulds.Hollow Chocolate Spinning Machine, filaments are cut to short,Chocolate Equipment.Sandwiching and Packaging. 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.Rotary Rack Oven.

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-Rack Oven,Automatic Multifunctional Biscuit Production Line, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Automatic Multifunctional Biscuit 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.Soft Biscuit Rotary Moulder, which are usually round,Biscuit Stacking Machine. The number of holes in the spinneret determines the size of the yarn,Biscuit Equipment.
• 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,Toffee Fondant Depositing 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,Automatic Starch Mogul Line.
• Die Formed Lollipop Production Line,Hard Candy Depositing Line. Also,Automatic Drying System,Automatic Cereal Bar 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.

Extruding Type Konjac Ball Production Line

Aluminium Moulds and Silicon, 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,Gummy Moving Cart. The rope-Advance Rasing Film Vacuum Cooker.

Drawing tow

• 1 Newly-Vacuum Batch Type Cooker.Gummy Kitchen System.

Crimping

• 2 Drawn tow is then fed into compression boxes,Advance Gummy Production Line, at a rate of 9-15 crimps per inch (3-6 per cm).Gummy Machines.

Setting

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

Cutting

• 4 Following heat setting,Gift Cloth Pouch. 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)Drawstring Sunglasses Pouch.Microfiber Pouch, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Printing Paper Shopping Bag.

The Future

Shopping Gift Paper Bag For Packaging,Paper Bags's fastest-growing fiber.Soft Microfiber Cleaning Cloth For Jewelry. 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,Jewelry Polishing Cleaning Cloth Printed, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Microfiber Camera Cleaning Cloth. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Camera Cleaning Cloth, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.