Polyester

Background

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

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

History

In 1926,Cap Assembly Machine For Add Washers-based E.I. du Pont de Nemours and Co.Flip Top Cap Assembly Machine. This early research, headed by W.H. Carothers,Push Pull 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,Sport Cap Assembly Machine. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Press Cap Assembly Machine,Plastic 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.Bottle Cap Assembly Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Mineral Water Cap Slitting 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,Medicine Cap Cutting Machine. In this process, ethylene is the polymer, the chemical building block of polyester,28mm Plastic Cap Slitting Machine.

The Manufacturing
Process

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

Drying

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

Drawing tow

• 1 Newly-3D Massage Recliner Kneading Chair.Free Installation 3D Massage Chair.

Crimping

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

Setting

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

Cutting

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

The Future

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