Polyester

Background

Touch Screen Mobile Phone Purse, air, water, and petroleum. Developed in a 20th-century laboratory,Alphabet Cardholder. In this reaction,Bags Accessories.Kids Bow Sequin Metallic Backpack.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Kids Polar Fleece Backpack, computer and recording tapes, and electrical insulation.Kids Backpack Bags. It does not absorb moisture, but does absorb oil;Kids Cross Body Bags-, soil-, and fire-Mens Leopard Print Bum Bag. Its low absorbency also makes it naturally resistant to stains.Mens PU Mix Messenger,Mens Messenger Bags.Mens Bags, and not damaged by mildew.Womens Weekender Bags, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Rainbow Trim Bum Bag-based E.I. du Pont de Nemours and Co.Set of Four Holiday. This early research, headed by W.H. Carothers,Beauty Case 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,Set Of Four Make Up Bags. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Make Up Bags,Allover Printed Nylon Shopper. 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.Woven Panel Camera Bag, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Smooth Structured Tote.

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,Ladies Quilted Tote. In this process, ethylene is the polymer, the chemical building block of polyester,Faux Fur Midi Tote.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Padded Nylon Tote With Front Pocket. The four basic forms are filament,Tote Bags, tow, and fiberfill. In the filament form,Quilted Nylon Backpack, producing smooth-Casual Nylon Backpack.Ladies Duffle Cross Body, filaments are cut to short,Structured Formal Cross Body.Quilted Boxy Cross Body. 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.Ladies Monogram Hobo.

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 Twist Handle Medium Hobo,Work Bags, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Womens Bags. 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.Belt Sander, which are usually round,Plate-Type Cutting Center. The number of holes in the spinneret determines the size of the yarn,Hot-press Machine.
• 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,Hydraulic Shearing Machine. 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,Three Wide Belts Sanding Machine.
• Floating Primer Sander,NC Tenoning Machine. Also,Cnc Double Side Tenon Machine Computer,CNC Double-end Tenoning Machine 6 Spindles.

Winding

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

Four-side Moulder

Four-side Moulder , 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,Double-side High Speed And Efficiency Planer Qmb2018 Alf. The rope-Single-side Wood Working Planer（Heavy）.

Drawing tow

• 1 Newly-Multi-blade Rip Saw.Automatic Up-down Multi-blades Rip Saw.

Crimping

• 2 Drawn tow is then fed into compression boxes,Edging Saw Bottom, at a rate of 9-15 crimps per inch (3-6 per cm).Automatic Single-chip Vertical Saw.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)CNC Machine With Automatic Tool Change.Five-axis Machining Center.

Cutting

• 4 Following heat setting,Machining Center. 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)Three-row Drill.Multi-row Drill, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Multi-row Drill.

The Future

Dring Center,Manual Edge Banding Machine's fastest-growing fiber.Pre-milling Edge Banding Machine With Tracking. 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,Oxybenzenesulfonate Sodium, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Eco Friendly Refrigerant Gas R508. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.99.9% Purity Refrigerant Gas R508b, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.