A PP hollow corrugated sheet extrusion machine is a specialized piece of equipment used to produce hollow corrugated sheets from polypropylene (PP) plastic material. These hollow corrugated sheets, also known as PP corrugated sheets or PP twin-wall sheets, have a unique structure that provides them with strength, lightweight properties, and versatility. They are commonly used in various applications such as packaging, advertising signage, construction, and more.

Here's how a PP hollow corrugated sheet extrusion machine works:

Polypropylene (PP) resin is fed into the extrusion machine in pellet form. The resin is the raw material that will be melted and formed into the hollow corrugated sheets.

The PP resin is transported through the extruder, a specialized machine with a screw mechanism. As the resin moves through the extruder, it is gradually heated and melted. The extruder's screw design ensures consistent melting and uniform mixing of the plastic.

Once the PP resin is melted, it is forced through a specially designed corrugation tool or mold. This tool shapes the molten plastic into a corrugated or wavy pattern, creating the distinctive hollow structure of the sheets. The corrugation not only adds strength but also reduces the overall weight of the sheets.

After corrugation, the formed sheets pass through a cooling process. This solidifies the plastic and sets the corrugated structure in place.

The continuous sheet is then cut into individual pieces of the desired length. These pieces are often stacked together for further processing or packaging.

Depending on the intended use of the sheets, they might undergo printing or surface treatment processes. This could include adding colors, graphics, or protective coatings to enhance their visual appeal and functionality.

The produced hollow corrugated sheets can undergo various additional processes depending on their intended application. These could include die-cutting, folding, welding, and more to create customized products like packaging boxes, signs, partitions, and protective packaging.

Benefits of PP Hollow Corrugated Sheet Extrusion Machine:Lightweight: The hollow structure of the sheets makes them lightweight, which is ideal for packaging and signage applications.Strength: Despite their lightweight nature, PP hollow corrugated sheets have good structural strength and impact resistance.Weather Resistance: These sheets are weather-resistant and can withstand a range of environmental conditions.Versatility: PP hollow corrugated sheets are versatile and can be used in a wide range of industries and applications.Eco-Friendly: By using recycled PP or focusing on reusing the sheets, their environmental impact can be minimized.The efficiency and quality of the produced PP hollow corrugated sheets depend on factors such as the extrusion machine's design, the quality of the PP resin used, and the expertise of the operators.

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PP Hollow Corrugated Sheet Extrusion Machine & Details

Extruder: The special designed screw and the advanced temperature control system ensure the good plasticizing, stable extrusion and high output.

Screen changer: PP Hollow Sheet Production Machine is of hydraulic style fast screen changer and ensures the short course of the exchanging filters. Double filters and special leakage-proof structure guarantee its stable performance.

Die: Made of super quality alloy and adopted adjustable restrictor bars, provide the even pressure of the plastic flow at the die lips. It ensures even thickness of the board with adjustable lips

Vacuum calibrator: The vacuum system and calibrating system including a heat-convection system array interleaved. This kind of design guarantees the high precise degree of the calibration. The vacuum system consists of two independent subsystems, which is equipped with many pieces three point type closed loop vacuum line. Each closed loop is equipped with vacuum regulating system and vacuum display system. This guarantees the good calibration and the smooth surface of the board.

Take-off unit: There are two haul-off units. First one consists of multi-rolls and is driven by a strong motor with a speed reducer with a big gear ratio. It has strong take-off strength and performs well at slow speed so that it can draw the board up from the calibrator evenly and synchronally. Second one is put after the infrared stabilizing oven. The slit unit fixed on the take-off unit ensures the smooth cut of the edges.

Anneal oven: PP Hollow Sheet Production Machine’s advanced huge area conductive heating style can relieve the stress of the products so as to ensure the board is flat.

Cutting machine: Setting accurate instant fixing-length cutting and automatic ascend and drop unloading system; the special alloy steel sharp blade ensures a good cut effect.

Company

RUGAO PACKER MACHINERY CO.,LTD was built in 2015. We are trading company and manufacturer for PP Hollow Sheet Production Machine.Plastic recycling machines, Mask making machine and so on. We have professional technical team for technical support and service.