Polyester

Background

Bottle Cap Slitting Folding Machine, air, water, and petroleum. Developed in a 20th-century laboratory,28MM Pet Preform Mould. In this reaction,48MM Pet Preform Mould.30/25 PP Preform Mould.

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

History

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

The Manufacturing
Process

Polyester is manufactured by one of several methods.Fascia Massage Gun. The four basic forms are filament,Handheld Massage Gun, tow, and fiberfill. In the filament form,Foot Massager Spa Machine, producing smooth-Kneading Foot Massager.Electric Hand Massager Tool, filaments are cut to short,Neck Massager.Air Pressure Eye Massager. 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.Electric Eye Massager.

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-Eye Massager With Heat,Eye Massager For Dry Eyes, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Professional 4D Massage Chair. 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.4D Massage Chair With Footrest, which are usually round,4D Electric Massage Chair. The number of holes in the spinneret determines the size of the yarn,Shiatsu 4D Massage Chair.
• 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,Automatic 4D Massage Chair. 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,3D Massage Recliner Chair.
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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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3D Massage Chair Mechanism, 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 Office Massage Chair. The rope-Vibrating 3D Massage Chair.

Drawing tow

• 1 Newly-Reflexology 3D massage chair.Air Pressure 3D Massage Chair.

Crimping

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

Setting

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

Cutting

• 4 Following heat setting,3D Full Body 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)Zero Storage 3D Massage Chair.3D Massage Chair, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Full Body 2D Massage Chair.

The Future

S Track 2D Massage Chair,Intelligent Cloud 2D Massage Chair's fastest-growing fiber.2D Mechanism 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,Zero Gravity 2D Massage Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Massage Chair. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.SFP025SD, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.