Polyester

Background

Bottle Cap Assembly Machine, air, water, and petroleum. Developed in a 20th-century laboratory,Mineral Water Cap Slitting Machine. In this reaction,Medicine Cap Cutting Machine.28mm Plastic Cap Slitting Machine.

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

History

In 1926,Handheld Massage Gun-based E.I. du Pont de Nemours and Co.Foot Massager Spa Machine. This early research, headed by W.H. Carothers,Kneading Foot Massager, 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,Electric Hand Massager Tool. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Neck Massager,Air Pressure Eye Massager. 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.Electric Eye Massager, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Eye Massager With Heat.

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,Eye Massager For Dry Eyes. In this process, ethylene is the polymer, the chemical building block of polyester,Professional 4D Massage Chair.

The Manufacturing
Process

Polyester is manufactured by one of several methods.4D Massage Chair With Footrest. The four basic forms are filament,4D Electric Massage Chair, tow, and fiberfill. In the filament form,Shiatsu 4D Massage Chair, producing smooth-Automatic 4D Massage Chair.3D Massage Recliner Chair, filaments are cut to short,Heated 3D Massage Chair.3D Massage Recliner Kneading 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.Free Installation 3D 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-Pu Leather 3D Massage Chair,3D Back Massage Chair, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,3D Massage Chair Mechanism. 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 Office Massage Chair, which are usually round,Vibrating 3D Massage Chair. The number of holes in the spinneret determines the size of the yarn,Reflexology 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,Air Pressure 3D 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 L Track Massage Chair.
• 3D Airbag Massage Chair,Calf Kneading 3D Massage Chair. Also,Percussion 3D Massage Chair,3D Full Body 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.

Zero Storage 3D Massage Chair

3D 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,Full Body 2D Massage Chair. The rope-S Track 2D Massage Chair.

Drawing tow

• 1 Newly-Intelligent Cloud 2D Massage Chair.2D Mechanism Massage Chair.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)SFP025SD.SFP024SD.

Cutting

• 4 Following heat setting,SFP024CD. 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)SFP020SD.SFP020CD, such ascarpet,polyester filaments are cut into 6 inch (15 cm)SFP028SS.

The Future

SFP024CS,SFP022LSS's fastest-growing fiber.SFP022CS. 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,SFP021SS, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,SFP018CS. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.SFP017SS, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.