BJ-2200 X3J - Sanitary Material Outer Packaging Film Production Equipment. This configuration sheet belongs to our company's technical parameters and is limited to internal personnel and end-users. Reproduction and dissemination are prohibited. This unit is a non-standard customized equipment, suitable for outer surface printing of sanitary packaging and inner heat sealing layer. And the inner lining material of the melt sealed edge. Blow film raw materials LDPE, HDPE, EVA, Nordic Chemical matte material. FB2230.FB2310.FB1460. ExxonMobil Metallocene 1002YB.2703CH.2018HA, 1O18HA. 3518CB. Due to the high pressure of upward blowing and extrusion. The flow rate of molecular solutes is slow. Therefore, the transparency and glossiness are not as good as those of blown PPE film. The downward blowing is cooled by both wind and water, and the width and diameter of the water ring shaping are {<(film width X2)/3.14+8mm}. Generally, the film is blown and shaped overnight before use. Each specification change requires a corresponding water ring, which has the advantages of lower blowing and high transparency. Good softness. High stretch resilience. High longitudinal elongation. But slightly worse horizontally. If 3 yuan PP, 2 yuan PP, homopolymer PP, copolymer PP are added, it can improve the hand feel and hardness, but it is prone to brittleness in winter and not cold resistant. PP and PE co extrusion may result in water streaks. This is a normal phenomenon of solute incompatibility. Because PP itself has good liquidity. Suitable for extrusion casting. However, PE has poor liquidity. Reverse pressure reflux and downward blowing of PPe can adjust the thickness deviation through both water and air simultaneously. For example, in thin areas. Turn down the water slightly, or use an iron sheet to elevate the water ring below. You can also take out the lotus gauze and clip it with a clip. The water inlet of the water ring is usually 4 or 6. Each inlet has a valve. It can control the inflow and circulation speed. The blown film should be opened wider. Increase the speed of cold water, blow the narrow film slightly smaller, and another option is the air ring. The wind ring and water ring should be adjusted to the appropriate position according to the width of the membrane. Keep the wide film water ring away from the wind ring. Narrow the membrane closer. Too much water can easily cause wrinkles. Too small is not good for transparency. The wind is too strong and the cooling is too fast, resulting in poor transparency. The wind is too weak and the bubbles are unstable. The above are some things that need to be controlled for downblowing. Overall, high permeability PPE is used for the outer layer of non-woven fabrics in clothing, printing, and edge melting. Zipper the bag. There is a phenomenon of flatness, shrinkage deformation, and wrinkling at the bottom of the cylinder material.
Adopting the top blown three-layer co extrusion composite molding method. Although the transparency is not as good as blowing PPE. But the flatness. Uniformity of thickness. And device operation has more advantages than downblowing.
This unit. 3-layer co extrusion composite molding method. GYBA-A type specialized machine for sanitary materials It can blow LLDPE and HDPE mixed raw materials. Mainly using new raw materials, considering the glossiness of the film. Squeezing screw, using 2 deep desalination processes. Surface mirror electroplating.
1、 Extruder:
Middle layer=isolation layer 80-1/30. Structure, gradient=pin=mixing=barrier,
Inner layer=heat sealing layer. 70-1/30. Screw twin-screw alloy. Structure. Gradient=Wave=Barrier
Outer layer=printing layer. 70-1/30. Screw twin-screw alloy. Structure. Boosting=Pin=Separation
The drawings and design parameters are for a specialized hybrid structure. Membrane structure ABC.
2、 Mold and wind ring:
The three-layer center spiral parallel feeding+plum blossom diversion ABC composite structure can achieve high production capacity. It can also reduce the extrusion pressure and generate shear heat. Mold mouth 450 type. Gap 2.2mm. Mirror plating. 40CR forging and tempering material. (Solid solution+aging) heat treatment. 5-axis CNC machine tool precision machining and forming. The adjustment ring adopts the flexible adjustment method of reverse button egg beads. Easy to adjust without difficulty. The flow channel design draws inspiration from the structure of German WH equipment. Combining the performance of domestic raw materials. Adopting a branched multi strand spiral gradient flow channel. Adaptability to differences between imported and domestically produced raw materials. Solved the problem of poor plasticization caused by mixing different raw materials. Uneven discharge. Residual carbon deposits from raw materials. Simultaneously achieving energy conservation and high efficiency.
3、 Automatically adjust the fan disk.
Adopting a double air outlet maze wall blocking structure, fully automatic temperature control adjustment structure, and inclined butterfly style air intake. The lower layer is a lightly pressed dam type, and the upper layer is a dispersed horn type. Heating is used to change the cooling capacity of the air outlet and solve the deviation of the film surface thickness. The upper layer is an air intake honeycomb structure. The blocking method can be used to change the cooling point of the air outlet straight line. Adjust the height of the film bubble cooling frost line for matte molds. Due to the viscosity of the outer EVA material. Easy to produce shaking. We need to increase the frost line. For heat shrink film repackaging materials. We also need to increase the frost line. Improve the lateral shrinkage rate. Conventional materials. No need to raise the frost line.
The automatic wind turbine is equipped with an online center monitoring scanning thickness gauge. 360 degree center scan. No blind spots. Capacitive contact type. Measurement accuracy at the nanometer level. Adjust the thickness deviation range by 30% -50%. Controlling the thickness uniformity of the film between 4% and 6% can meet the substrate requirements for solvent-free high-speed composite. And the demand for surface printing computer color matching.
