Polyester

Background

Stone Paper Books, air, water, and petroleum. Developed in a 20th-century laboratory,Stone Paper Eco Friendly Tissue Holder. In this reaction,Stone Carton Board 2mm.Stone Carton Board 3mm.

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

History

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

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 Paste Making Equipment. In this process, ethylene is the polymer, the chemical building block of polyester,Chocolate Forming Moulds.

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Biscuit Equipment. 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.Toffee Fondant Depositing Line, which are usually round,Automatic Starch Mogul Line. The number of holes in the spinneret determines the size of the yarn,Die Formed Lollipop 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,Hard Candy 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 Drying System.
• Automatic Cereal Bar Line,Extruding Type Konjac Ball Production Line. Also,Aluminium Moulds and Silicon,Gummy Moving Cart.

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 Rasing Film Vacuum Cooker

Vacuum Batch Type Cooker, 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 Kitchen System. The rope-Advance Gummy Production Line.

Drawing tow

• 1 Newly-Gummy Machines.Cloth Bag For Gift.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Drawstring Sunglasses Pouch.Microfiber Pouch.

Cutting

• 4 Following heat setting,Printing Paper Shopping Bag. 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)Shopping Gift Paper Bag For Packaging.Paper Bags, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Soft Microfiber Cleaning Cloth For Jewelry.

The Future

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