Polyester

Background

Stone Paper 180um, air, water, and petroleum. Developed in a 20th-century laboratory,Stone Paper Soft. In this reaction,Full Automatic Marshmallow Production Line.Deposited Marshmallow Line.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Full Automatic Extruded Marshmallow Production Line, computer and recording tapes, and electrical insulation.Popping Boba Line. It does not absorb moisture, but does absorb oil;Chocolate Blocks Guitar Cutter-, soil-, and fire-Chocolate Slicing Machine. Its low absorbency also makes it naturally resistant to stains.Small Chocolate Machine,Chocolate Enrobing Line.Chocolate Tempering Machine, and not damaged by mildew.Chocolate Blocks Crusher, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Chocolate Paste Making Equipment-based E.I. du Pont de Nemours and Co.Chocolate Forming Moulds. This early research, headed by W.H. Carothers,Chocolate Moulds, 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,Hollow Chocolate Spinning Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Chocolate Equipment,Sandwiching and Packaging. 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.Rotary Rack Oven, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rack Oven.

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,Automatic Multifunctional Biscuit Production Line. In this process, ethylene is the polymer, the chemical building block of polyester,Automatic Multifunctional Biscuit Production Line.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Soft Biscuit Rotary Moulder. The four basic forms are filament,Biscuit Stacking Machine, tow, and fiberfill. In the filament form,Biscuit Equipment, producing smooth-Toffee Fondant Depositing Line.Automatic Starch Mogul Line, filaments are cut to short,Die Formed Lollipop Production Line.Hard Candy Depositing 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 Drying System.

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 Cereal Bar Line,Extruding Type Konjac Ball Production Line, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Aluminium Moulds and Silicon. 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.Gummy Moving Cart, which are usually round,Advance Rasing Film Vacuum Cooker. The number of holes in the spinneret determines the size of the yarn,Vacuum Batch Type Cooker.
• 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,Gummy Kitchen System. 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,Advance Gummy Production Line.
• Gummy Machines,Cloth Bag For Gift. Also,Cloth Christmas Gift Bag,Gift Cloth Pouch.

Winding

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

Drawstring Sunglasses Pouch

Microfiber Pouch, 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,Printing Paper Shopping Bag. The rope-Shopping Gift Paper Bag For Packaging.

Drawing tow

• 1 Newly-Paper Bags.Soft Microfiber Cleaning Cloth For Jewelry.

Crimping

• 2 Drawn tow is then fed into compression boxes,Jewelry Polishing Cleaning Cloth Printed, at a rate of 9-15 crimps per inch (3-6 per cm).Microfiber Camera Cleaning Cloth.

Setting

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

Cutting

• 4 Following heat setting,Packaging For Sunglasses. 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)Spectacle Frame Box.Black Sunglasses Case Packaging, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Sunglasses Product Packaging.

The Future

Paper Packaging Box For Eyeglasses Frames,Corrugated PVC Suction Hose's fastest-growing fiber.Clear And Transparent PVC Tubing. 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,PVC Clear Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,General Purpose PVC Garden Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Non-kink PVC Garden Hose, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.