Polyester

Background

Stone Card Paper 250um, air, water, and petroleum. Developed in a 20th-century laboratory,Stone Paper 180um. In this reaction,Stone Paper Soft.Full Automatic Marshmallow Production Line.

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

History

In 1926,Chocolate Blocks Crusher-based E.I. du Pont de Nemours and Co.Chocolate Paste Making Equipment. This early research, headed by W.H. Carothers,Chocolate Forming 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,Chocolate Moulds. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Hollow Chocolate Spinning Machine,Chocolate Equipment. 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.Sandwiching and Packaging, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Rotary 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,Rack Oven. 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.Automatic Multifunctional Biscuit Production Line. The four basic forms are filament,Soft Biscuit Rotary Moulder, tow, and fiberfill. In the filament form,Biscuit Stacking Machine, producing smooth-Biscuit Equipment.Toffee Fondant Depositing Line, filaments are cut to short,Automatic Starch Mogul Line.Die Formed Lollipop 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.Hard Candy Depositing 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-Automatic Drying System,Automatic Cereal Bar Line, is extruded through a slot to form long ribbons.

Drying

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

Gift Cloth Pouch

Drawstring Sunglasses 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,Microfiber Pouch. The rope-Printing Paper Shopping Bag.

Drawing tow

• 1 Newly-Shopping Gift Paper Bag For Packaging.Paper Bags.

Crimping

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

Setting

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

Cutting

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

The Future

Sunglasses Product Packaging,Paper Packaging Box For Eyeglasses Frames's fastest-growing fiber.Corrugated PVC Suction 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,Clear And Transparent PVC Tubing, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,PVC Clear Hose. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.General Purpose 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.