FIELD: chemistry.
SUBSTANCE: method comprises: the steps of producing a molten adhesive composition, combining inert gas with the molten adhesive composition in the first mixer, mixing the molten adhesive composition containing inert gas in the first mixer under conditions effective to produce the first foamed adhesive composition; and mixing the first foamed adhesive composition in the second mixer under conditions effective to produce the second foamed adhesive composition comprising a substantially uniform distribution of closed pores containing inert gas. Herewith the internal pressure of the first foamed adhesive composition entering the second mixer is greater than the external pressure of the second foamed adhesive composition leaving the second mixer. The internal pressure is 2586-3103 kPa, and the external pressure is 1207-2241 kPa.
EFFECT: reducing the amount of the adhesive composition to be applied to the support substrate, while retaining the adhesive and bulk properties.
12 cl, 1 dwg, 2 tbl, 2 ex
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