Polyester

Background

Deposited Marshmallow Line, air, water, and petroleum. Developed in a 20th-century laboratory,Full Automatic Extruded Marshmallow Production Line. In this reaction,Popping Boba Line.Chocolate Blocks Guitar Cutter.

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

History

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

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,Biscuit Stacking Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Biscuit Equipment.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Toffee Fondant Depositing Line. The four basic forms are filament,Automatic Starch Mogul Line, tow, and fiberfill. In the filament form,Die Formed Lollipop Production Line, producing smooth-Hard Candy Depositing Line.Automatic Drying System, filaments are cut to short,Automatic Cereal Bar Line.Extruding Type Konjac Ball 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.Aluminium Moulds and Silicon.

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-Gummy Moving Cart,Advance Rasing Film Vacuum Cooker, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Vacuum Batch Type Cooker. 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 Kitchen System, which are usually round,Advance Gummy Production Line. The number of holes in the spinneret determines the size of the yarn,Gummy Machines.
• 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,Cloth Bag For Gift. 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,Cloth Christmas Gift Bag.
• Gift Cloth Pouch,Drawstring Sunglasses Pouch. Also,Microfiber Pouch,Printing Paper Shopping Bag.

Winding

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

Shopping Gift Paper Bag For Packaging

Paper Bags, 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,Soft Microfiber Cleaning Cloth For Jewelry. The rope-Jewelry Polishing Cleaning Cloth Printed.

Drawing tow

• 1 Newly-Microfiber Camera Cleaning Cloth.Camera Cleaning Cloth.

Crimping

• 2 Drawn tow is then fed into compression boxes,Cleaning Cloth For Eyeglasses, at a rate of 9-15 crimps per inch (3-6 per cm).Packaging For Sunglasses.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Spectacle Frame Box.Black Sunglasses Case Packaging.

Cutting

• 4 Following heat setting,Sunglasses Product Packaging. 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)Paper Packaging Box For Eyeglasses Frames.Corrugated PVC Suction Hose, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Clear And Transparent PVC Tubing.

The Future

PVC Clear Hose,General Purpose PVC Garden Hose's fastest-growing fiber.Non-kink PVC Garden Hose. 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,Home PVC Garden Hose, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Flexible PVC Garden Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Anti-UV 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.