Polyester

Background

Inflatable Liferaft, air, water, and petroleum. Developed in a 20th-century laboratory,Multi-Function Dump Device. In this reaction,Pneumatic of Dump Device.Self-Sustaining Rope Thrower.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Marine Life Saving Fireworks Signal, computer and recording tapes, and electrical insulation.Lifejacket Light. It does not absorb moisture, but does absorb oil;Inflatable Waistband-, soil-, and fire-Motorcycle Safety Clothing. Its low absorbency also makes it naturally resistant to stains.Pet Body Belt,Pet Body Belt Bags.Touch Screen Mobile Phone Purse, and not damaged by mildew.Alphabet Cardholder, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Bags Accessories-based E.I. du Pont de Nemours and Co.Kids Bow Sequin Metallic Backpack. This early research, headed by W.H. Carothers,Kids Polar Fleece Backpack, 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,Kids Backpack Bags. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Kids Cross Body Bags,Mens Leopard Print 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.Mens PU Mix Messenger, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Mens Messenger 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,Mens Bags. In this process, ethylene is the polymer, the chemical building block of polyester,Womens Weekender Bags.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Rainbow Trim Bum Bag. The four basic forms are filament,Set of Four Holiday, tow, and fiberfill. In the filament form,Beauty Case Bags, producing smooth-Set Of Four Make Up Bags.Make Up Bags, filaments are cut to short,Allover Printed Nylon Shopper.Woven Panel Camera Bag. 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.Smooth Structured Tote.

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-Ladies Quilted Tote,Faux Fur Midi Tote, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Padded Nylon Tote With Front Pocket. 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.Tote Bags, which are usually round,Quilted Nylon Backpack. The number of holes in the spinneret determines the size of the yarn,Casual Nylon Backpack.
• 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,Ladies Duffle Cross Body. 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,Structured Formal Cross Body.
• Quilted Boxy Cross Body,Ladies Monogram Hobo. Also,Ladies Twist Handle Medium Hobo,Work Bags.

Winding

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

Womens Bags

Belt 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,Plate-Type Cutting Center. The rope-Hot-press Machine.

Drawing tow

• 1 Newly-Hydraulic Shearing Machine.Three Wide Belts Sanding Machine.

Crimping

• 2 Drawn tow is then fed into compression boxes,Floating Primer Sander, at a rate of 9-15 crimps per inch (3-6 per cm).NC Tenoning Machine.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Cnc Double Side Tenon Machine Computer.CNC Double-end Tenoning Machine 6 Spindles.

Cutting

• 4 Following heat setting,Four-side Moulder . 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)Four-side Moulder .Double-side High Speed And Efficiency Planer Qmb2018 Alf, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Single-side Wood Working Planer（Heavy）.

The Future

Multi-blade Rip Saw,Automatic Up-down Multi-blades Rip Saw's fastest-growing fiber.Edging Saw Bottom. 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,Automatic Single-chip Vertical Saw, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,CNC Machine With Automatic Tool Change. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Five-axis Machining Center, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.