Introduce The Production Process Of Plastic Geotextile Mats

The production process of plastic geotextile mats by Longchang Jie Machinery is the process of forming a three-dimensional mesh structure product by processing and welding high molecular materials through a series of physical processes. Here is a detailed step-by-step description:

1. Raw material preparation and plasticization stage

·Raw material mixing

Mix HDPE or PP base materials with color masterbatches and functional additives in proportion and stir for 3-10 minutes until evenly dispersed. Then transfer to the storage box.

·Screw feeding

Use a screw feeder to quantitatively transport the mixed raw materials to the extruder hopper. It can be manually controlled or started at regular intervals. Ensure that the storage box has sufficient raw materials.

·Melt plasticization

The raw materials are gradually plasticized into a uniform melt with uniform temperature and pressure in the extruder through external heating (PID closed-loop control) and screw shearing friction. The depth of the screw groove gradually decreases as the screw advances.

·Impurity filtration

The melt passes through a double-position hydraulic mesh changing device for filtration. Metal filters retain impurities to prevent equipment damage.

2. Sheet formation and treatment stage

·Sheet extrusion

The filtered melt enters the frame-type mold and is cooled and shaped by a three-roll calender. The gap of the roller determines the sheet thickness (usually 1.5-2.2mm), and the width is 600mm.

·Secondary cooling

The sheet still needs further cooling after initial shaping to ensure the release of internal stress.

·Cutting and punching

Cut longitudinally at a height of 50-200mm, and then punch holes by an intermittent press to enhance adhesion. The feeding device controls the spacing of the holes.

·Traction and fixed length

Use a two-stage traction device to maintain a constant speed and transport the sheet to the transverse cutting station, cutting according to the set length.

3. Welding and finished product stage

·Sheet inspection and bundling

The cut sheets are inspected for quality and bundled according to the welding requirements. They await the welding process.

·Ultrasonic welding

Using a semi-automatic ultrasonic needle-type welding machine, the sheet material is positioned manually and the welding switch is triggered to form a honeycomb-shaped three-dimensional grid structure.

·Product characteristics

The geogrid after welding has the characteristics of flexible expansion and contraction (foldable during transportation), resistance to acid and alkali, and anti-aging. The welding distance and height can be customized.

·Key process features

Material control: Using reinforced HDPE, the oxidation induction time can reach over 200 minutes, ensuring a service life of more than 50 years.

Welding technology: Ultrasonic welding forms high-strength joints, replacing traditional mechanical connections, and enhancing structural stability.

Customized production: The thickness of the sheet material (1.0-1.5mm), the height of the grid (50-250mm), and the welding distance (330-1600mm) can be adjusted according to engineering requirements.

Through the above process, the final product can be widely applied in engineering scenarios such as road embankment reinforcement and slope protection. Its three-dimensional restraint effect can effectively disperse loads and prevent soil deformation.