Polyester

Background

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

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

History

In 1926,38mm Mineral Water Cap Folding Slitting Machine-based E.I. du Pont de Nemours and Co.Automatic Cap Slitting Folding Machine. This early research, headed by W.H. Carothers,Bottle 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 1946,28MM Pet Preform Mould. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.48MM Pet Preform Mould,30/25 PP 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.Cap Assembly Machine For Add Foam Liner, 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 Washers.

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

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Automatic Cap Lining 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.Auto Cap Lining Machine, which are usually round,Bottle Cap Lining Machine. The number of holes in the spinneret determines the size of the yarn,Vibration Massage Gun.
• 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,Fascia 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,Handheld 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.

Air Pressure Eye Massager

Electric 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,Eye Massager With Heat. The rope-Eye Massager For Dry Eyes.

Drawing tow

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Crimping

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

Setting

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

Cutting

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

The Future

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