Tube head requirements:
1. The surface of the pipe body should be smooth, free from streaks, scratches, strain and shrinkage deformation, the pipe body should be straight and not bent, the pipe wall thickness should be uniform, and the tolerance of the pipe wall thickness, length and diameter should be within the specified range;
2. The tube head of the hose is firmly connected with the tube body, the wiring is neat, beautiful, and the width is uniform. The tube head cannot be connected after it can be skewed during injection;
3. The tube head and the tube cover are well matched, screwing in and out smoothly, no slipping within the specified torque range, no water or air leakage between the tube and the tube cover; printing requirements: offset printing is generally used for hose processing, and the ink used Mostly UV drying, which generally requires the ink to have strong adhesion and color resistance. The printing color is within the specified depth range, the overprint position is accurate, the deviation is within 0.2 mm, and the font is complete and clear.
Plastic cover requirements: The plastic cover is generally made of polypropylene (PP) injection molding. High-quality plastic covers must not have obvious shrinkage lines and sharp edges. The clamping line should be smooth, accurate in size, and smooth with the pipe head, and there should be no structural damage such as brittle cracks during normal use. For example, when the opening force is within the range, the cover should be able to withstand more than 300 revolutions without breaking.