Polyester

Background

Aluminium Foil Cap Liner Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Easy Operation Cap liner Machine. In this reaction,Cap Liner Machine For Add Gasket.Plastic Cap Liner Machine.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Bottle Cap Liner Machine, computer and recording tapes, and electrical insulation.High Speed Cap Slitting Folding Machine. It does not absorb moisture, but does absorb oil;38mm Mineral Water Cap Folding Slitting Machine-, soil-, and fire-Automatic Cap Slitting Folding Machine. Its low absorbency also makes it naturally resistant to stains.Bottle Cap Slitting Folding Machine,28MM Pet Preform Mould.48MM Pet Preform Mould, and not damaged by mildew.30/25 PP Preform Mould, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Cap Assembly Machine For Add Foam Liner-based E.I. du Pont de Nemours and Co.Cap Assembly Machine For Add Washers. This early research, headed by W.H. Carothers,Flip Top Cap Assembly 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,Push Pull Cap Assembly Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Sport Cap Assembly Machine,Press Cap Assembly 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.Plastic Cap Assembly Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Bottle Cap Assembly Machine.

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,Mineral Water Cap Slitting Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Medicine Cap Cutting Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.28mm Plastic Cap Slitting Machine. The four basic forms are filament,Bottle Cap Cutting Machine, tow, and fiberfill. In the filament form,Plastic Cap Printing Machine, producing smooth-Bottle Cap Printing Machine.Automatic Cap Lining Machine, filaments are cut to short,Auto Cap Lining Machine.Bottle Cap Lining 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.Vibration Massage Gun.

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-Fascia Massage Gun,Handheld Massage Gun, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Foot Massager Spa 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.Kneading Foot Massager, which are usually round,Electric Hand Massager Tool. The number of holes in the spinneret determines the size of the yarn,Neck Massager.
• 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,Air Pressure Eye Massager. 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,Electric Eye Massager.
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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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Shiatsu 4D Massage Chair, 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 4D Massage Chair. The rope-3D Massage Recliner Chair.

Drawing tow

• 1 Newly-Heated 3D Massage Chair.3D Massage Recliner Kneading Chair.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,3D Office 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)Vibrating 3D Massage Chair.Reflexology 3D massage chair, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Air Pressure 3D Massage Chair.

The Future

3D L Track Massage Chair,3D Airbag Massage Chair's fastest-growing fiber.Calf Kneading 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,Percussion 3D Massage Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,3D Full Body Massage Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Zero Storage 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.