Polyester

Background

Paper Box With Custom Logo, air, water, and petroleum. Developed in a 20th-century laboratory,Round Paper Cardboard Gift Box. In this reaction,Custom Luxury Jewelry Case.Aluminum Foil Bag.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Bags&Pouches, computer and recording tapes, and electrical insulation.Stone Paper Bags. It does not absorb moisture, but does absorb oil;Stone Paper Books-, soil-, and fire-Stone Paper Eco Friendly Tissue Holder. Its low absorbency also makes it naturally resistant to stains.Stone Carton Board 2mm,Stone Carton Board 3mm.Stone Paper Carton Board, and not damaged by mildew.Stone Paper Film 60um, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Stone Paper Film-based E.I. du Pont de Nemours and Co.Stone Card Paper 250um. This early research, headed by W.H. Carothers,Stone Paper 180um, 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,Stone Paper Soft. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Full Automatic Marshmallow Production Line,Deposited Marshmallow 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.Full Automatic Extruded Marshmallow Production Line, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Popping Boba Line.

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 Blocks Guitar Cutter. In this process, ethylene is the polymer, the chemical building block of polyester,Chocolate Slicing Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Small Chocolate Machine. The four basic forms are filament,Chocolate Enrobing Line, tow, and fiberfill. In the filament form,Chocolate Tempering Machine, producing smooth-Chocolate Blocks Crusher.Chocolate Paste Making Equipment, filaments are cut to short,Chocolate Forming Moulds.Chocolate Moulds. 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.Hollow Chocolate Spinning 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-Chocolate Equipment,Sandwiching and Packaging, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Rotary Rack Oven. 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.Rack Oven, which are usually round,Automatic Multifunctional Biscuit Production Line. The number of holes in the spinneret determines the size of the yarn,Automatic Multifunctional Biscuit 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,Soft Biscuit Rotary Moulder. 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,Biscuit Stacking Machine.
• Biscuit Equipment,Toffee Fondant Depositing Line. Also,Automatic Starch Mogul Line,Die Formed Lollipop Production Line.

Winding

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

Hard Candy Depositing Line

Automatic Drying System, 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,Automatic Cereal Bar Line. The rope-Extruding Type Konjac Ball Production Line.

Drawing tow

• 1 Newly-Aluminium Moulds and Silicon.Gummy Moving Cart.

Crimping

• 2 Drawn tow is then fed into compression boxes,Advance Rasing Film Vacuum Cooker, at a rate of 9-15 crimps per inch (3-6 per cm).Vacuum Batch Type Cooker.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Gummy Kitchen System.Advance Gummy Production Line.

Cutting

• 4 Following heat setting,Gummy Machines. 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)Cloth Bag For Gift.Cloth Christmas Gift Bag, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Gift Cloth Pouch.

The Future

Drawstring Sunglasses Pouch,Microfiber Pouch's fastest-growing fiber.Printing Paper Shopping Bag. 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,Shopping Gift Paper Bag For Packaging, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Paper Bags. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Soft Microfiber Cleaning Cloth For Jewelry, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.