Polyester

Background

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

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

History

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

The Manufacturing
Process

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

Drying

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

Drawing tow

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

Crimping

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

Setting

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

Cutting

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

The Future

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