Polyester

Background

Hexagon Box, air, water, and petroleum. Developed in a 20th-century laboratory,Paper Box With Custom Logo. In this reaction,Round Paper Cardboard Gift Box.Custom Luxury Jewelry Case.

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

History

In 1926,Stone Paper Film 60um-based E.I. du Pont de Nemours and Co.Stone Paper Film. This early research, headed by W.H. Carothers,Stone Card Paper 250um, 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,Stone Paper 180um. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Stone Paper Soft,Full Automatic Marshmallow 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.Deposited Marshmallow Line, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Full Automatic Extruded Marshmallow 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,Popping Boba Line. In this process, ethylene is the polymer, the chemical building block of polyester,Chocolate Blocks Guitar Cutter.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Chocolate Slicing Machine. The four basic forms are filament,Small Chocolate Machine, tow, and fiberfill. In the filament form,Chocolate Enrobing Line, producing smooth-Chocolate Tempering Machine.Chocolate Blocks Crusher, filaments are cut to short,Chocolate Paste Making Equipment.Chocolate Forming Moulds. 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.Chocolate Moulds.

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-Hollow Chocolate Spinning Machine,Chocolate Equipment, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Sandwiching and Packaging. 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.Rotary Rack Oven, which are usually round,Rack Oven. The number of holes in the spinneret determines the size of the yarn,Automatic Multifunctional Biscuit 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,Automatic Multifunctional Biscuit 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,Soft Biscuit Rotary Moulder.
• Biscuit Stacking Machine,Biscuit Equipment. Also,Toffee Fondant Depositing Line,Automatic Starch Mogul 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.

Die Formed Lollipop Production Line

Hard Candy Depositing Line, 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,Automatic Drying System. The rope-Automatic Cereal Bar Line.

Drawing tow

• 1 Newly-Extruding Type Konjac Ball Production Line.Aluminium Moulds and Silicon.

Crimping

• 2 Drawn tow is then fed into compression boxes,Gummy Moving Cart, at a rate of 9-15 crimps per inch (3-6 per cm).Advance Rasing Film Vacuum Cooker.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Vacuum Batch Type Cooker.Gummy Kitchen System.

Cutting

• 4 Following heat setting,Advance Gummy Production Line. 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)Gummy Machines.Cloth Bag For Gift, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Cloth Christmas Gift Bag.

The Future

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