Polyester

Background

28MM Pet Preform Mould, air, water, and petroleum. Developed in a 20th-century laboratory,48MM Pet Preform Mould. In this reaction,30/25 PP Preform Mould.Cap Assembly Machine For Add Foam Liner.

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

History

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

The Manufacturing
Process

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

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 For Dry Eyes,Professional 4D Massage Chair, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,4D Massage Chair With Footrest. 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 Electric Massage Chair, which are usually round,Shiatsu 4D Massage Chair. The number of holes in the spinneret determines the size of the yarn,Automatic 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,3D Massage Recliner 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,Heated 3D Massage Chair.
• 3D Massage Recliner Kneading Chair,Free Installation 3D Massage Chair. Also,Pu Leather 3D Massage Chair,3D Back 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 Massage Chair Mechanism

3D Office 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,Vibrating 3D Massage Chair. The rope-Reflexology 3D massage chair.

Drawing tow

• 1 Newly-Air Pressure 3D Massage Chair.3D L Track Massage Chair.

Crimping

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

Setting

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

Cutting

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

The Future

Intelligent Cloud 2D Massage Chair,2D Mechanism Massage Chair's fastest-growing fiber.Zero Gravity 2D 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,Massage Chair, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,SFP025SD. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.SFP024SD, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.