Polyester

Background

Flip Top Cap Assembly Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Push Pull Cap Assembly Machine. In this reaction,Sport Cap Assembly Machine.Press Cap Assembly Machine.

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

History

In 1926,Automatic Cap Lining Machine-based E.I. du Pont de Nemours and Co.Auto Cap Lining Machine. This early research, headed by W.H. Carothers,Bottle Cap Lining 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,Vibration Massage Gun. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Fascia Massage Gun,Handheld Massage Gun. 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.Foot Massager Spa Machine, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Kneading Foot Massager.

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,Electric Hand Massager Tool. In this process, ethylene is the polymer, the chemical building block of polyester,Neck Massager.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Air Pressure Eye Massager. The four basic forms are filament,Electric Eye Massager, tow, and fiberfill. In the filament form,Eye Massager With Heat, producing smooth-Eye Massager For Dry Eyes.Professional 4D Massage Chair, filaments are cut to short,4D Massage Chair With Footrest.4D Electric Massage Chair. 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.Shiatsu 4D Massage Chair.

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 4D Massage Chair,3D Massage Recliner Chair, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Heated 3D 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.3D Massage Recliner Kneading Chair, which are usually round,Free Installation 3D Massage Chair. The number of holes in the spinneret determines the size of the yarn,Pu Leather 3D 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,3D Back 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 Chair Mechanism.
• 3D Office Massage Chair,Vibrating 3D Massage Chair. Also,Reflexology 3D massage chair,Air Pressure 3D Massage Chair.

Winding

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

3D L Track Massage Chair

3D Airbag 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,Calf Kneading 3D Massage Chair. The rope-Percussion 3D Massage Chair.

Drawing tow

• 1 Newly-3D Full Body Massage Chair.Zero Storage 3D Massage Chair.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)S Track 2D Massage Chair.Intelligent Cloud 2D Massage Chair.

Cutting

• 4 Following heat setting,2D Mechanism 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 Gravity 2D Massage Chair.Massage Chair, such ascarpet,polyester filaments are cut into 6 inch (15 cm)SFP025SD.

The Future

SFP024SD,SFP024CD's fastest-growing fiber.SFP020SD. 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,SFP020CD, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,SFP028SS. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.SFP024CS, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.