Polyester

Background

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

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

History

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

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 Washers. In this process, ethylene is the polymer, the chemical building block of polyester,Flip Top Cap Assembly Machine.

The Manufacturing
Process

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

Drying

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

Drawing tow

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Crimping

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

Setting

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

Cutting

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

The Future

Pu Leather 3D Massage Chair,3D Back Massage Chair's fastest-growing fiber.3D Massage Chair Mechanism. 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 Office Massage Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Vibrating 3D Massage Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Reflexology 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.