Types and Raw Material of Geotextiles

When we talk about geotextile and its essential aspects we refer to a type of flat, permeable textile material, of appreciable deformability, formed by thermoplastic polymer fibers, which is used for geotechnical applications.

The true value of the weight of geotextiles is in their raw material and in their manufacturing mode. The polymers used in the manufacture of geotextiles are usually of synthetic origin due to their greater durability compared to natural ones.

The weight of the geotextile (grammage) does not offer relevant technical information about geotextile, if it would the resistances: CBR, traction, elongation, puncture, etc. In addition to the way geotextiles are manufactured, an important factor is the raw material used to do so.

Types and Raw Material of Geotextiles

RAW MATERIALS:


The multimeter used in the manufacture of Geotextil fibers is made of the following materials: POLYPROPYLENE, POLYETHYLENE and POLYESTER.

Polypropylene is a long chain thermoplastic polymer with high rigidity, good tensile properties, acid resistance and durability.
Polyethylene is a simple organic polymer with excellent flexibility, ease of handling and good physical properties. They are practically not used today.
Polyesters are a group of polymers. They are characterized by being slightly deformable and having a high elastic modulus. They are likely to be degraded in alkaline environments, gypsum grounds, near cement / concrete.

FABRICATION PROCESS:

To manufacture geotextiles it is necessary to follow a complex process of transformation from pellets (raw material) to the final geotextile. Depending on the application we are looking for, we can find geotextiles for: Reinforcement, protection, drainage, filtration and separation.

Geotextiles can be classified as follows, depending on their manufacturing system:

Sharp nonwoven geotextile with fiber continuity: 100% virgin polypropylene filaments with subsequent thermofusion to give fiber continuity.

Heat-welded non-woven geotextile: It has the same mass in smaller volume, less permeability and greater rigidity, it is split before deforming.

Sharp nonwoven short fiber woven geotextile: Much lower mechanical strength under the same weight.

Woven Geotextile: It has less permeability and low point load opens fibers.

Quality Control of Geotextile:


A quality control comes into play in the geotextile manufacturing process. GTM Geotextile has its own approved laboratory to carry out the necessary tests so that its products offer the highest quality levels.

In the GTM Geotextile laboratory, we thoroughly analyze both finished products and raw materials for their elaboration and subsequent use, taking care of every detail to offer the best product.


What is a MOPA Fiber Laser Marker?

Fiber laser marker machine, as one kind of laser marking system, has been widely used for permanent and high quality marking in different industries.

MOPA Fiber Laser Marker

Though many laser systems are available by now on the market, the MOPA fiber laser marker remains as one of the most innovative and technologically advanced systems you can find owing to its excellent marking performance and high cost effectiveness over other laser marking systems.

1.Meaning of MOPA laser

The term MOPA is actually an abbreviation for master oscillator power amplifier. The MOPA laser has two gas discharging chambers, namely, the master oscillator and the power amplifier.

laser beam is generated by the master oscillator with a low amount of energy in a tight spectrum, the laser beam is then passed through the the power amplifier chamber, which amplifies the beam to the necessary power levels.

The pulse frequency and pulse duration can be adjusted which provides a wider range of laser marking parameters and more marking options. With MOPA laser, plastics can be marked with with higher-contrast and more legible results, also, black marking of anodized aluminum and create reproducible color marking of steel are available, MOPA lasers are thus an important alternative for many applications due to their high flexibility.

MOPA Fiber Laser Marker for stainless steel

2.Advantages of MOPA laser

Air-cooling with high ambient air temperature operating;

Efficient running with low power consumption;

Longest diode life (up to 100,000 hours)

High peak power and long pulse duration makes high-speed and deep marking possible

Less burning/melting in the edge area of metal material

Small heat affected zone during markings on metal, which leads to a better corrosion behavior

Black marking of anodized aluminum

Color marking of stainless steel

3.Applications for MOPA laser

MOPA Fiber Laser Marker application

Excellent blacking marking for anodized aluminum without damaging the surface;

A wide range of reproducible color marking on stainless steel, also, can be used for high-contrast marking of various other metals.

Can carry out marking, etching and engraving on the surface of a variety of materials, including:

Steel, SS, nickle, aluminum, alloy, titanium, brass and copper, painted materials, black oxide, polyethylene, ABS plastic, Carbide, PCD and so much more!

You can visit Jeesun CNC to see more information