Equipment and consumables needed:
Basic equipment:
1, digital electronic scales, vacuum defoamer;
2, drip platform;
3, plastic cups for mixing glue, stirring rod, plastic drip pots, double-sided tape.
Cleaning agent: anhydrous ethanol.
Conditions permitting, you can add the following equipment: baking oven, automatic glue dripping machine and so on. (You can add me 532687535) to understand.
One, manual operation process is as follows:
1, first of all prepared all kinds of substrates, such as: PVC, plastic trademarks, metal badges into the oven at 60 degrees preheating treatment, the purpose of removing moisture from the surface.
2, after the dehumidification of the substrate is placed flat on the level of the same operating table to wait for the drip.
3, according to the dosage, take a clean beaker, accurate measurement, will be the A and B components, according to the 2:1 weight ratio of mixing and stirring (must be mixed evenly, otherwise there will be the phenomenon of the surface of the sticky and delamination of the substrate, the products of various manufacturers are the same to do this.) (Note: the proportion of each manufacturer is not the same, depending on the actual situation). 4, and then will be matched with the mixture into the vacuum drying box, open the real pump, in a vacuum state to remove the air bubbles in the mixture.
4, take a clean and clean in the syringe, the defoaming crystal glue inhaled into the syringe, and then measured and evenly injected in the pre-prepared substrate (i.e.: signage, trademarks, etc.) of the surface, the general thickness of the crystal glue layer of 2mm, and let it naturally leveling can be (Note: the above process is controlled within 30 minutes, so as not to increase the viscosity of the glue, resulting in inability to operate).
5, the substrate in the drip crystal glue after 3-5 minutes, observe the glue surface with or without air bubbles or dust particles, such as small bubbles, can be used to pierce the big head pin, such as found in the dead corner of the crystal glue to the place where there is no flow, with a big head pin can be extradited.
6, pour a good sign, at 20 ℃ -30 ℃ room temperature curing 10-24 hours to harden, become the surface of the non-stick crystal sign.
7, such as self-adhesive, trademarks, etc., the thickness of itself is very thin, the boundary is not obvious, pouring, easy to cause the crystal glue overflow, to achieve a thickness of 2mm has some difficulty, so the system of crystal glue to grasp the different situations, control the viscosity, in the process of applying the application, can be placed for 1-2 hours in order to improve the viscosity, to adapt to the pouring of thin crystal glue.
7, the production of greater than 2mm thick crystal glue signs, can be divided into two drop molding, the first drop, curing 3-5 hours, and then drop with a layer.
8, drip molding cleaning, whether manual drip molding, or automated drip molding, after the completion of the machinery, equipment, containers need to be cleaned, because the crystal adhesive hardening, insoluble in any solvent, so it must not be hardened before the machine, containers need to be cleaned (Recommendations: the use of acetone or anhydrous alcohol).