Polyester

Background

Kids Polar Fleece Backpack, air, water, and petroleum. Developed in a 20th-century laboratory,Kids Backpack Bags. In this reaction,Kids Cross Body Bags.Mens Leopard Print Bum Bag.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Mens PU Mix Messenger, computer and recording tapes, and electrical insulation.Mens Messenger Bags. It does not absorb moisture, but does absorb oil;Mens Bags-, soil-, and fire-Womens Weekender Bags. Its low absorbency also makes it naturally resistant to stains.Rainbow Trim Bum Bag,Set of Four Holiday.Beauty Case Bags, and not damaged by mildew.Set Of Four Make Up Bags, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Make Up Bags-based E.I. du Pont de Nemours and Co.Allover Printed Nylon Shopper. This early research, headed by W.H. Carothers,Woven Panel Camera Bag, 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,Smooth Structured Tote. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Ladies Quilted Tote,Faux Fur Midi Tote. 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.Padded Nylon Tote With Front Pocket, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Tote 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,Quilted Nylon Backpack. In this process, ethylene is the polymer, the chemical building block of polyester,Casual Nylon Backpack.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Ladies Duffle Cross Body. The four basic forms are filament,Structured Formal Cross Body, tow, and fiberfill. In the filament form,Quilted Boxy Cross Body, producing smooth-Ladies Monogram Hobo.Ladies Twist Handle Medium Hobo, filaments are cut to short,Work Bags.Womens 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.Belt Sander.

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-Plate-Type Cutting Center,Hot-press Machine, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Hydraulic Shearing Machine. 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.Three Wide Belts Sanding Machine, which are usually round,Floating Primer Sander. The number of holes in the spinneret determines the size of the yarn,NC Tenoning 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,Cnc Double Side Tenon Machine Computer. 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,CNC Double-end Tenoning Machine 6 Spindles.
• Four-side Moulder ,Four-side Moulder . Also,Double-side High Speed And Efficiency Planer Qmb2018 Alf,Single-side Wood Working Planer（Heavy）.

Winding

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

Multi-blade Rip Saw

Automatic Up-down Multi-blades Rip Saw, 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,Edging Saw Bottom. The rope-Automatic Single-chip Vertical Saw.

Drawing tow

• 1 Newly-CNC Machine With Automatic Tool Change.Five-axis Machining Center.

Crimping

• 2 Drawn tow is then fed into compression boxes,Machining Center, at a rate of 9-15 crimps per inch (3-6 per cm).Three-row Drill.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Multi-row Drill.Multi-row Drill.

Cutting

• 4 Following heat setting,Dring 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)Manual Edge Banding Machine.Pre-milling Edge Banding Machine With Tracking, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Oxybenzenesulfonate Sodium.

The Future

Eco Friendly Refrigerant Gas R508,99.9% Purity Refrigerant Gas R508b's fastest-growing fiber.Refrigerant Gas R23. 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,Mixed Refrigerant Gas R507, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,99.9% Pure Gas Refrigerant Gas R507. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.99.9% pure Gas Refrigerant gas r507, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.