Polyester

Background

Lifejacket Light, air, water, and petroleum. Developed in a 20th-century laboratory,Inflatable Waistband. In this reaction,Motorcycle Safety Clothing.Pet Body Belt.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Pet Body Belt Bags, computer and recording tapes, and electrical insulation.Touch Screen Mobile Phone Purse. It does not absorb moisture, but does absorb oil;Alphabet Cardholder-, soil-, and fire-Bags Accessories. Its low absorbency also makes it naturally resistant to stains.Kids Bow Sequin Metallic Backpack,Kids Polar Fleece Backpack.Kids Backpack Bags, and not damaged by mildew.Kids Cross Body Bags, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Mens Leopard Print Bum Bag-based E.I. du Pont de Nemours and Co.Mens PU Mix Messenger. This early research, headed by W.H. Carothers,Mens Messenger Bags, 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,Mens Bags. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Womens Weekender Bags,Rainbow Trim Bum Bag. 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.Set of Four Holiday, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Beauty Case Bags.

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,Set Of Four Make Up Bags. In this process, ethylene is the polymer, the chemical building block of polyester,Make Up Bags.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Allover Printed Nylon Shopper. The four basic forms are filament,Woven Panel Camera Bag, tow, and fiberfill. In the filament form,Smooth Structured Tote, producing smooth-Ladies Quilted Tote.Faux Fur Midi Tote, filaments are cut to short,Padded Nylon Tote With Front Pocket.Tote Bags. 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.Quilted Nylon Backpack.

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-Casual Nylon Backpack,Ladies Duffle Cross Body, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Structured Formal Cross Body. 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.Quilted Boxy Cross Body, which are usually round,Ladies Monogram Hobo. The number of holes in the spinneret determines the size of the yarn,Ladies Twist Handle Medium Hobo.
• 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,Work Bags. 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,Womens Bags.
• Belt Sander,Plate-Type Cutting Center. Also,Hot-press Machine,Hydraulic Shearing Machine.

Winding

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

Three Wide Belts Sanding Machine

Floating Primer Sander, 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,NC Tenoning Machine. The rope-Cnc Double Side Tenon Machine Computer.

Drawing tow

• 1 Newly-CNC Double-end Tenoning Machine 6 Spindles.Four-side Moulder .

Crimping

• 2 Drawn tow is then fed into compression boxes,Four-side Moulder , at a rate of 9-15 crimps per inch (3-6 per cm).Double-side High Speed And Efficiency Planer Qmb2018 Alf.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Single-side Wood Working Planer（Heavy）.Multi-blade Rip Saw.

Cutting

• 4 Following heat setting,Automatic Up-down Multi-blades Rip Saw. 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)Edging Saw Bottom.Automatic Single-chip Vertical Saw, such ascarpet,polyester filaments are cut into 6 inch (15 cm)CNC Machine With Automatic Tool Change.

The Future

Five-axis Machining Center,Machining Center's fastest-growing fiber.Three-row Drill. 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,Multi-row Drill, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Multi-row Drill. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Dring Center, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.