Polyester

Background

SMC Sheet Cutting Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Cap assembling Machine For Add Aluminium Foil. In this reaction,Flip Top Cap Assembling Machine.Press Cap Assembling Machine.

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

History

In 1926,Bottle Cap Liner Machine-based E.I. du Pont de Nemours and Co.High Speed Cap Slitting Folding Machine. This early research, headed by W.H. Carothers,38mm Mineral Water Cap Folding Slitting 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,Automatic Cap Slitting Folding Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Bottle Cap Slitting Folding Machine,28MM Pet Preform Mould. 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.48MM Pet Preform Mould, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.30/25 PP 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,Cap Assembly Machine For Add Foam Liner. In this process, ethylene is the polymer, the chemical building block of polyester,Cap Assembly Machine For Add Washers.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Flip Top Cap Assembly Machine. The four basic forms are filament,Push Pull Cap Assembly Machine, tow, and fiberfill. In the filament form,Sport Cap Assembly Machine, producing smooth-Press Cap Assembly Machine.Plastic Cap Assembly Machine, filaments are cut to short,Bottle Cap Assembly Machine.Mineral Water Cap Slitting 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.Medicine Cap Cutting 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-28mm Plastic Cap Slitting Machine,Bottle Cap Cutting Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Plastic Cap Printing 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 Printing Machine, which are usually round,Automatic Cap Lining Machine. The number of holes in the spinneret determines the size of the yarn,Auto Cap Lining 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,Bottle 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,Vibration Massage Gun.
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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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Neck 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,Air Pressure Eye Massager. The rope-Electric Eye Massager.

Drawing tow

• 1 Newly-Eye Massager With Heat.Eye Massager For Dry Eyes.

Crimping

• 2 Drawn tow is then fed into compression boxes,Professional 4D Massage Chair, at a rate of 9-15 crimps per inch (3-6 per cm).4D Massage Chair With Footrest.

Setting

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

Cutting

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

The Future

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