Polyester

Background

Multi-purposed Chicken Bone Kitchen Scissors, air, water, and petroleum. Developed in a 20th-century laboratory,Used For Cutting Chicken And Fish With Bone-2. In this reaction,rubber compensator.rectangular rubber flue compensatio.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Fabric And Non-metallic Compensator, computer and recording tapes, and electrical insulation.Lateral Corrugated Compensator. It does not absorb moisture, but does absorb oil;Axial Corrugated Compensator-, soil-, and fire-PTFE Lined Stainless Steel Bellows Compensator. Its low absorbency also makes it naturally resistant to stains.Large Gap In Board Boxes Corrugated Compensator,Angular Pressure Balance Bellows Compensator.Stainless Steel Flexible Hose Flange, and not damaged by mildew.Loose Flanges Stainless Steel Hose, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,PTFE lined stainless steel hose-based E.I. du Pont de Nemours and Co.Silica Cloth. This early research, headed by W.H. Carothers,Rtangular Fue Fbric Cmpensator, 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,Fabric And Non-metallic Compensator. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.rectangular rubber flue compensation,circular rubber flue compensator. 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.rubber compensator, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.rubber flue duct expansion joint.

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,flexible joint. In this process, ethylene is the polymer, the chemical building block of polyester,Large Flexivity Expansion Joint.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Couplings joint. The four basic forms are filament,gland type limited expansion joint, tow, and fiberfill. In the filament form,single flange dismantling joint, producing smooth-Dismantling Duble Fange Dsmantling Joint.single sphere rubber joint, filaments are cut to short,DIN rubber expansion joint.EPDM rubber expansion joint. 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.concentric reducer rubber joint.

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-clamp type flexing rubber joint,rubber check valve flanged, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,sleeve Duckbill valve XH81. 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.Small Plastic Clip, which are usually round,Small Plastic Clip. The number of holes in the spinneret determines the size of the yarn,Clear Mini Plastic Clip.
• 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,Mini Plastic Clip. 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,A5 Plastic Clipboard.
• Clear A4 Plastic Clipboard,Transparent Magnet. Also,Magnet,Double Card Injection Moulding Name Badge.

Winding

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

PS Injection Moulding Name Badge

Injection Moulding Name Badge, 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,PVC Frosted Name Badge. The rope-Frosted Name Badge With Metal Clip.

Drawing tow

• 1 Newly-Frosted Name Badge.Printable Heart Shape Mini Cutter.

Crimping

• 2 Drawn tow is then fed into compression boxes,Heart Shape Mini Cutter, at a rate of 9-15 crimps per inch (3-6 per cm).Clear Circle Shape Mini Cutter.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Small And Exquisite Multicolor Stationery Item.Multicolor Stationery Item.

Cutting

• 4 Following heat setting,Delicate Customizable Stationery Item. 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)Customizable Stationery Item.Delicate Plastic Stationery Item, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Mini Plastic Stationery Item.

The Future

Plastic Stationery Item,Stationery Item's fastest-growing fiber.PP Pen Box With Various Styles. 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,Plastic Double Side Pencil Case, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Customizable PP Pencil Case. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Pinkycolor PP Pencil Case, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.