Polyester

Background

Stone Carton Board 2mm, air, water, and petroleum. Developed in a 20th-century laboratory,Stone Carton Board 3mm. In this reaction,Stone Paper Carton Board.Stone Paper Film 60um.

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

History

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

The Manufacturing
Process

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

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-Biscuit Equipment,Toffee Fondant Depositing Line, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Gummy Kitchen System

Advance Gummy Production 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,Gummy Machines. The rope-Cloth Bag For Gift.

Drawing tow

• 1 Newly-Cloth Christmas Gift Bag.Gift Cloth Pouch.

Crimping

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

Setting

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

Cutting

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

The Future

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