The ratio of glue solution in dry laminating technology
The proportion of curing agent is too little, then the main agent cross-linking is not sufficient, serious no matter how curing, adhesive still has a sticky phenomenon, the heat resistance of the adhesive and the resistance of the content performance is insufficient. On the contrary, the more the ratio of curing agent, the more dense the interconnection points, the greater the cohesion, the better the relative fatigue resistance. But the adhesive layer is brittle, the resistance of the adhesive is reduced, and the peel strength is decreased.
The product manual of two-component polyurethane adhesive will provide a reference value of the formula proportion. In general, it will not be a problem to prepare according to the proportion provided by it. However, due to the complex conditions of each unit, and the different regions and climates, the quality level and amount of thinner used are different. Whether ONY and PT are used to absorb moisture, the drying ability of the composite machine, and the mixing ratio of the remaining glue solution all affect the actual ratio of the main agent and curing agent. Users should explore the proportion that is more suitable for their needs and the performance is more able to meet a specific requirement according to their actual use conditions.
