Optimization of Parameters for the Printing Process of Adhesive Application in Honeycomb Core Manufacturing

Thickness of the adhesive strip, mass application of the adhesive, graphic accuracy of the adhesive strip location, and strength of the adhesive bond at delamination are among the main parameters of the adhesive joint affecting the honeycomb core characteristics. The most advanced technology which provides obtaining high-quality honeycomb core is considered to be the technology where the adhesive is applied by the intaglio method. One of the ways to improve the adhesive application procedure by this method is the validation and selection of the conditions of printing process. The regression mathematical model is developed in order to establish the optimal relationship between the surface application of the adhesive and parameters of the process of adhesive strip application. The proposed model of the process under study, as a result of evaluation according to a number of criteria, allowed obtaining the minimum applied amount of adhesive with guaranteed uneven tearing strength. Analysis of the resulting model shows that the depth of printing elements has the most significant effect on the mass application of the adhesive. For example, with the decrease in the depth of printing elements, mass application of the adhesive is reduced as well. Speed of printing affects the parameter of adhesive application only in the interaction with the adhesive viscosity. Results of the work allow significantly reducing the procedures of preparation of the considered stages of technological process for the manufacturing of honeycomb cores by means of reduction of the experimental research.