Polyester

Background

Bags&Pouches, air, water, and petroleum. Developed in a 20th-century laboratory,Stone Paper Bags. In this reaction,Stone Paper Books.Stone Paper Eco Friendly Tissue Holder.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Chocolate Paste Making Equipment. The four basic forms are filament,Chocolate Forming Moulds, tow, and fiberfill. In the filament form,Chocolate Moulds, producing smooth-Hollow Chocolate Spinning Machine.Chocolate Equipment, filaments are cut to short,Sandwiching and Packaging.Rotary Rack Oven. 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.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-Automatic Multifunctional Biscuit Production Line,Automatic Multifunctional Biscuit Production Line, is extruded through a slot to form long ribbons.

Drying

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

Aluminium Moulds and Silicon

Gummy Moving Cart, 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,Advance Rasing Film Vacuum Cooker. The rope-Vacuum Batch Type Cooker.

Drawing tow

• 1 Newly-Gummy Kitchen System.Advance Gummy Production Line.

Crimping

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

Setting

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

Cutting

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

The Future

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