A surgical stapler end effector assembly, the end effector assembly comprising: (a) a staple cartridge, wherein the staple cartridge comprises: (i) a plurality of staples, and (ii) a deck, wherein the staple cartridge is operable to drive the staples through the deck; (b) an anvil, wherein the anvil is movable from an open position toward the staple cartridge to reach a closed position, wherein the anvil includes an underside having staple forming surface configured to receive staples driven through the deck; and (c) a buttress assembly (2600,2700), wherein the buttress assembly comprises: (i) a buttress body (2602,2702), and (ii) an adhesive material (2612,2720), wherein the adhesive material is configured to removably secure the buttress body to the deck of the staple cartridge or the underside of the anvil, wherein the adhesive material comprises a polymer, wherein the polymer is bioabsorbable, wherein the polymer is in a flowable state on the buttress body; (iii) an intermediate layer interposed between the buttress body and the adhesive material, wherein the intermediate layer is impermeable such that the intermediate layer is configured to prevent the flowable polymer from flowing into the buttress body, wherein the buttress assembly comprises a plurality of discretely formed recesses, wherein the recesses are configured to contain the flowable polymer in a plurality of discrete regions. (a) a staple cartridge, wherein the staple cartridge comprises: (i) a plurality of staples, and (ii) a deck, wherein the staple cartridge is operable to drive the staples through the deck; (i) a plurality of staples, and (ii) a deck, wherein the staple cartridge is operable to drive the staples through the deck; (b) an anvil, wherein the anvil is movable from an open position toward the staple cartridge to reach a closed position, wherein the anvil includes an underside having staple forming surface configured to receive staples driven through the deck; and (c) a buttress assembly (2600,2700), wherein the buttress assembly comprises: (i) a buttress body (2602,2702), and (ii) an adhesive material (2612,2720), wherein the adhesive material is configured to removably secure the buttress body to the deck of the staple cartridge or the underside of the anvil, wherein the adhesive material comprises a polymer, wherein the polymer is bioabsorbable, wherein the polymer is in a flowable state on the buttress body; (iii) an intermediate layer interposed between the buttress body and the adhesive material, wherein the intermediate layer is impermeable such that the intermediate layer is configured to prevent the flowable polymer from flowing into the buttress body, wherein the buttress assembly comprises a plurality of discretely formed recesses, wherein the recesses are configured to contain the flowable polymer in a plurality of discrete regions. (i) a buttress body (2602,2702), and (ii) an adhesive material (2612,2720), wherein the adhesive material is configured to removably secure the buttress body to the deck of the staple cartridge or the underside of the anvil, wherein the adhesive material comprises a polymer, wherein the polymer is bioabsorbable, wherein the polymer is in a flowable state on the buttress body; (iii) an intermediate layer interposed between the buttress body and the adhesive material, wherein the intermediate layer is impermeable such that the intermediate layer is configured to prevent the flowable polymer from flowing into the buttress body,