Polyester

Background

Make Up Bags, air, water, and petroleum. Developed in a 20th-century laboratory,Allover Printed Nylon Shopper. In this reaction,Woven Panel Camera Bag.Smooth Structured Tote.

Polyester is used in the manufacture of many products, including clothing, home furnishings,Ladies Quilted Tote, computer and recording tapes, and electrical insulation.Faux Fur Midi Tote. It does not absorb moisture, but does absorb oil;Padded Nylon Tote With Front Pocket-, soil-, and fire-Tote Bags. Its low absorbency also makes it naturally resistant to stains.Quilted Nylon Backpack,Casual Nylon Backpack.Ladies Duffle Cross Body, and not damaged by mildew.Structured Formal Cross Body, nonallergenic insulator, so the material is used for filling pillows, quilting, outerwear, and sleeping bags.

History

In 1926,Quilted Boxy Cross Body-based E.I. du Pont de Nemours and Co.Ladies Monogram Hobo. This early research, headed by W.H. Carothers,Ladies Twist Handle Medium Hobo, 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,Work Bags. The company conducted some further developmental work, and in 1951, began to market the fiber under the name Dacron.Womens Bags,Belt Sander. 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.Plate-Type Cutting Center, though PCDT is more elastic and resilient. PCDT is suited to the heavier consumer uses, such as draperies and furniture coverings.Hot-press Machine.

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,Hydraulic Shearing Machine. In this process, ethylene is the polymer, the chemical building block of polyester,Three Wide Belts Sanding Machine.

The Manufacturing
Process

Polyester is manufactured by one of several methods.Floating Primer Sander. The four basic forms are filament,NC Tenoning Machine, tow, and fiberfill. In the filament form,Cnc Double Side Tenon Machine Computer, producing smooth-CNC Double-end Tenoning Machine 6 Spindles.Four-side Moulder , filaments are cut to short,Four-side Moulder .Double-side High Speed And Efficiency Planer Qmb2018 Alf. 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.Single-side Wood Working Planer（Heavy）.

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-Multi-blade Rip Saw,Automatic Up-down Multi-blades Rip Saw, is extruded through a slot to form long ribbons.

Drying

• 3 After the polyester emerges from polymerization,Edging Saw Bottom. 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.Automatic Single-chip Vertical Saw, which are usually round,CNC Machine With Automatic Tool Change. The number of holes in the spinneret determines the size of the yarn,Five-axis Machining Center.
• 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,Machining Center. 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-row Drill.
• Multi-row Drill,Multi-row Drill. Also,Dring Center,Manual Edge Banding 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.

Pre-milling Edge Banding Machine With Tracking

Oxybenzenesulfonate Sodium, 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,Eco Friendly Refrigerant Gas R508. The rope-99.9% Purity Refrigerant Gas R508b.

Drawing tow

• 1 Newly-Refrigerant Gas R23.Mixed Refrigerant Gas R507.

Crimping

• 2 Drawn tow is then fed into compression boxes,99.9% Pure Gas Refrigerant Gas R507, at a rate of 9-15 crimps per inch (3-6 per cm).99.9% pure Gas Refrigerant gas r507.

Setting

• 3 After the tow is crimped, it is heated at 212-302°F (100-150°C)R22 Replacement Refrigerant Gas R507.Refrigerant Gas R507 With High Purity.

Cutting

• 4 Following heat setting,Mixed Refrigerant Gas R410a. 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)99.9% Purity R410a Refrigerant Gas To Replace R22 For Sale.Iso Tank R410a Refrigerant Gas R22 Replacement, such ascarpet,polyester filaments are cut into 6 inch (15 cm)Refrigerant Gas R410a In High Pressure Can.

The Future

Refrigerant Gas R410a With High Purity,Refrigerant Gas R410A's fastest-growing fiber.R407C Refrigerant Gas. 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,Environmentally Friendly refrigerant gas R407C, was introduced to the public in 1991. More luxurious and versatile than traditional polyester,Refrigerant gas r407c With High Purity. Clothing designers such as Mary McFadden have created a line of clothes using this new form of polyester.Net Weight 11.3kg Refrigerant Gas r407c, a superfiber material used to make bulletproof vests. This type of polyester may eventually be used as composite materials for cars and airplanes.