Polyester

Background

Bottle Cap Printer Machine, air, water, and petroleum. Developed in a 20th-century laboratory,SMC Sheet Automatic Cutter Machine. In this reaction,SMC Sheet Cutting Machine.Cap assembling Machine For Add Aluminium Foil.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Flip Top Cap Assembling Machine, computer and recording tapes, and electrical insulation.Press Cap Assembling Machine. It does not absorb moisture, but does absorb oil;Push Pull Cap Assembling Machine-, soil-, and fire-Sport Cap Assembling Machine. Its low absorbency also makes it naturally resistant to stains.Bottle Cap Assembling Machine,Auto Cap Liner Machine.Aluminium Foil Cap Liner Machine, and not damaged by mildew.Easy Operation Cap liner Machine, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Cap Liner Machine For Add Gasket-based E.I. du Pont de Nemours and Co.Plastic Cap Liner Machine. This early research, headed by W.H. Carothers,Bottle Cap Liner 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,High Speed Cap Slitting Folding Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.38mm Mineral Water Cap Folding Slitting Machine,Automatic Cap Slitting Folding Machine. 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.Bottle Cap Slitting Folding Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.28MM Pet Preform Mould.

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,48MM Pet Preform Mould. In this process, ethylene is the polymer, the chemical building block of polyester,30/25 PP Preform Mould.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Cap Assembly Machine For Add Foam Liner. The four basic forms are filament,Cap Assembly Machine For Add Washers, tow, and fiberfill. In the filament form,Flip Top Cap Assembly Machine, producing smooth-Push Pull Cap Assembly Machine.Sport Cap Assembly Machine, filaments are cut to short,Press Cap Assembly Machine.Plastic Cap Assembly Machine. 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.Bottle Cap Assembly 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-Mineral Water Cap Slitting Machine,Medicine Cap Cutting Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,28mm Plastic Cap Slitting Machine. 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.Bottle Cap Cutting Machine, which are usually round,Plastic Cap Printing Machine. The number of holes in the spinneret determines the size of the yarn,Bottle Cap Printing Machine.
• 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 Cap Lining Machine. 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,Auto Cap Lining Machine.
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Winding

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

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Kneading Foot Massager, 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,Electric Hand Massager Tool. The rope-Neck Massager.

Drawing tow

• 1 Newly-Air Pressure Eye Massager.Electric Eye Massager.

Crimping

• 2 Drawn tow is then fed into compression boxes,Eye Massager With Heat, at a rate of 9-15 crimps per inch (3-6 per cm).Eye Massager For Dry Eyes.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Professional 4D Massage Chair.4D Massage Chair With Footrest.

Cutting

• 4 Following heat setting,4D Electric Massage Chair. 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)Shiatsu 4D Massage Chair.Automatic 4D Massage Chair, such ascarpet,polyester filaments are cut into 6 inch (15 cm)3D Massage Recliner Chair.

The Future

Heated 3D Massage Chair,3D Massage Recliner Kneading Chair's fastest-growing fiber.Free Installation 3D Massage Chair. 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,Pu Leather 3D Massage Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,3D Back Massage Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.3D Massage Chair Mechanism, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.