The blister boxes (flocking) process is a technology that fixes the fluff on the surface of blister boxes (flocking) to increase its aesthetics, touch and protective performance. The following are its key steps and quality control points.
Key steps: First, the surface of the blister boxes (flocking) must be cleaned and pre-treated to remove impurities such as dust and oil to enhance the adhesion between the fluff and the surface of the blister boxes (flocking). Usually, solvents such as alcohol are used for wiping, or plasma treatment is used to improve the surface activity.
Quality control points: Ensure that there are no residual impurities on the surface and the surface activity reaches a suitable level for flocking. The surface cleanliness and activity can be detected by visual observation and contact angle measurement. If improperly handled, the fluff will not adhere firmly and hair will fall off.
Key steps: Choose the right glue according to the material and use environment of the blister boxes (flocking). Common ones are water-based glue and oil-based glue. Water-based glue is environmentally friendly but has slightly weaker viscosity, while oil-based glue has strong viscosity but may have environmental problems. Then apply the glue evenly on the surface of the blister boxes (flocking). The application methods include spraying, brushing and rolling.
Key points for quality control: The viscosity, solid content and drying time of the glue must meet the process requirements. The application should be uniform to avoid excessive glue causing piles of fluff and insufficient glue causing loose adhesion of the fluff. The viscosity of the glue can be measured by a viscometer, and the uniformity of the application can be tested by a scraper test.
Key steps: Place the treated blister boxes (flocking) into the flocking equipment, and make the fluff evenly adhere to the glue-coated surface by electrostatic adsorption or mechanical spraying. Electrostatic flocking has a better effect, which can make the fluff stand upright and feel softer.
Key points for quality control: Control the time, voltage and amount of fluff for flocking. If the time is too short or the voltage is too low, the fluff will not be attached enough; if the time is too long or the voltage is too high, the fluff may fall or be damaged. The flocking effect is evaluated by measuring the amount of fluff attached by weighing and observing the uprightness and uniformity of the fluff.
Key steps: After flocking, the blister boxes (flocking) need to be dried to solidify the glue and firmly bond the fluff to the surface. Drying methods include natural air drying, hot air drying and infrared drying.
Key points for quality control: Control the drying temperature and time. Too high a temperature may cause the glue to age and the fluff to discolor. Too low a temperature will cause the drying time to be too long, affecting production efficiency. Monitor the drying temperature with a thermometer and control the drying time with a timing device to ensure that the glue is fully solidified and the fluff is firmly bonded.
Key steps: After drying, the blister boxes (flocking) may have some excess fluff or uneven areas, which need to be trimmed and arranged to make the surface of the blister boxes (flocking) smooth and beautiful.
Key points for quality control: Trimming should be neat, and there should be no residual fluff or trimming marks. Check the flatness and smoothness of the surface of the blister boxes (flocking) by visual observation and touch to ensure that the product meets quality standards.
Key steps: Conduct a comprehensive quality inspection of flocked blister boxes (flocking), including appearance inspection, fluff adhesion test, physical performance test, etc.
Key points for quality control: The appearance inspection should ensure that there are no defects such as fluff shedding, bubbles, and discoloration. The fluff adhesion test can be carried out by the tape stripping method, and the adhesion is judged according to the specified standards. Physical performance tests include compressive strength, impact strength, etc., which must meet the use requirements of the product.
Key steps: Pack the qualified flocked blister boxes (flocking), usually in plastic bags or cartons, to prevent damage during transportation and storage. The storage environment should be kept dry and ventilated, and avoid direct sunlight.
Key points for quality control: The packaging should be firm and can effectively protect the product. The temperature and humidity of the storage environment should be controlled within an appropriate range to prevent the blister boxes (flocking) from deforming and the fluff from getting damp and moldy. Check the stored products regularly to ensure that the quality is not affected.
Each key step of the blister boxes (flocking) process requires strict quality control to produce high-quality flocking blister boxes (flocking) to meet the needs of different customers.
