Study on Improving the Quality of Adhesive Interlining using Urea Resine

Background
In order to increase the adhesive strength of the adhesive interlining, it is necessary to make a good adhesive and use it. In the process of the production of adhesive interlining with DR501 as the main raw material, the adhesive hardened rapidly, which prevented frequent screening and prevented the quality of the produced adhesive interlining. In this paper, an emulsion-type urea-formaldehyde water-soluble liquid resin was prepared for the production of adhesive interlining, and a new adhesive interlining production process was established using it. The addition condensation reactant was introduced into the emulsion phase during the initial condensation of urea-formaldehyde using an organic catalyst to obtain a urea-formaldehyde emulsion resin with good adhesion close to the properties of an acrylic resin emulsion (DR501). The new emulsion-type urea-formaldehyde aqueous resin solution was prepared by adding urotropin to improve the water resistance and adhesion strength of the adhesive significantly after the addition condensation reaction was completed. It also developed a formula for adhesive core resin paste with emulsion resin as a feedstock, thus making full use of existing production processes and equipment, raising production efficiency and operating rate of equipment and improving the quality of products. In this regard, the paper adjusted the viscosity of the resin paste to 120 Pa•s, further improved the viscosity of the resin paste so as to better capture and fix the polyester powder, and developed a rational formula for doubling the water resistance, brittleness and adhesive strength of urea resin.

Adhesive Interlinings, Urea Resin, Adhesive, Textile

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