Polyester

Background

Push Pull Cap Assembling Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Sport Cap Assembling Machine. In this reaction,Bottle Cap Assembling Machine.Auto Cap Liner Machine.

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

History

In 1926,Bottle Cap Slitting Folding Machine-based E.I. du Pont de Nemours and Co.28MM Pet Preform Mould. This early research, headed by W.H. Carothers,48MM Pet Preform Mould, 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 1946,30/25 PP Preform Mould. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Cap Assembly Machine For Add Foam Liner,Cap Assembly Machine For Add Washers. 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.Flip Top Cap Assembly Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Push Pull 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,Sport Cap Assembly Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Press Cap Assembly Machine.

The Manufacturing
Process

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

Drying

• 3 After the polyester emerges from polymerization,Bottle 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.Vibration Massage Gun, which are usually round,Fascia Massage Gun. The number of holes in the spinneret determines the size of the yarn,Handheld 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,Foot Massager Spa Machine. 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,Kneading Foot Massager.
• Electric Hand Massager Tool,Neck Massager. Also,Air Pressure Eye Massager,Electric Eye Massager.

Winding

• 8 After the polyester yarn is drawn, it is wound on large bobbins or flat-wound packages, ready to be woven into material.

Eye Massager With Heat

Eye Massager For Dry Eyes, 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,Professional 4D Massage Chair. The rope-4D Massage Chair With Footrest.

Drawing tow

• 1 Newly-4D Electric Massage Chair.Shiatsu 4D Massage Chair.

Crimping

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

Setting

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

Cutting

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

The Future

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