Polyester

Background

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

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

History

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

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 Duffle Cross Body. In this process, ethylene is the polymer, the chemical building block of polyester,Structured Formal Cross Body.

The Manufacturing
Process

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

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-Hydraulic Shearing Machine,Three Wide Belts Sanding Machine, is extruded through a slot to form long ribbons.

Drying

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

Winding

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

Edging Saw Bottom

Automatic Single-chip Vertical 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,CNC Machine With Automatic Tool Change. The rope-Five-axis Machining Center.

Drawing tow

• 1 Newly-Machining Center.Three-row Drill.

Crimping

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

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)Dring Center.Manual Edge Banding Machine.

Cutting

• 4 Following heat setting,Pre-milling Edge Banding Machine With Tracking. 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)Oxybenzenesulfonate Sodium.Eco Friendly Refrigerant Gas R508, such ascarpet,polyester filaments are cut into 6 inch (15 cm)99.9% Purity Refrigerant Gas R508b.

The Future

Refrigerant Gas R23,Mixed Refrigerant Gas R507's fastest-growing fiber.99.9% Pure Gas Refrigerant Gas R507. 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,99.9% pure Gas Refrigerant gas r507, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,R22 Replacement Refrigerant Gas R507. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Refrigerant Gas R507 With High Purity, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.