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AssigneeElopak Systems AG
InventorsMichael Stephen Daley, John Kelly, Ole Peter Trovaag, Harald Harsson, Ivica Franic
Estimating the term…
A blank (2) comprising a row of body panels (P1-P4), and a row of end closure panels (P6-P9) extending substantially parallelly to the row of body panels (P1-P4), whereof each end closure panel (P6-P9) has an edge (E1-E4), and whereof each of the second (P7) and fourth (P9) end closure panels has oblique lines of weakness (S1, S11, S2, S12) which divide its panel into a central sub-panel (P7a, P9a) adjacent the corresponding second or fourth body panel (P2, P4) and two end sub-panels (P7b, P7c, P9b, P9c) adjacent the corresponding edges (E2, E4), wherein the end sub-panels (P7b, P7c, P9b, P9c) bulge away from its corresponding edge (E2, E4). A container formed from the sheet material blank and a method of forming the container is also described. The method involves the use of a mandrel cap including a bearing surface (102) and a bridging surface portion (112) substantially flush with said bearing surface (102), and extending between recessed surface portions (104) at respective opposite sides of said bridging surface portion (112).
1-40. (canceled)
A sheet material blank comprised of a layer of cellulosic material and a layer of thermoplastics material, said blank comprising a row of body panels (P1-P4) comprised of first, second, third and fourth body panels (P1-P4), and a row of end closure panels (P6-P9) extending substantially parallelly to said row of body panels (P1-P4) and comprised of first, second, third and fourth end closure panels (P6-P9), whereof each of the second (P7) and fourth (P9) end closure panels has first and second oblique lines of weakness (S1, S11, S2, S12) which divide its panel into a central sub-panel (P7a, P9a) adjacent the corresponding second or fourth body panel (P2, P4) and two end sub-panels (P7b, P7c, P9b, P9c), each of said central sub-panels (P7a, P9a) being substantially triangular and extending from a corresponding body panel (P2, P4) to an apex (A1, A2) and whereof the first end closure panel (P6) includes a central lug (P6c) projecting centrally outwardly with respect to its panel (P6), said central lug (P6b) being separated from its panel (P6) by a line of weakness (S6a), wherein said line of weakness (S6a) is off-set relative to an imaginary line passing through both of the apices (A1,A2) and is at a level between an outermost edge (E3) of said first end closure panel (P6) and the level of said imaginary line.
A container of sheet material comprised of a layer of cellulosic material and a layer of thermoplastics material, said container including
A mandrel cap including a bearing surface for bearing against an end closure of a carton sleeve received on a mandrel, said bearing surface comprising first and second major surface portions at substantially the same level as each other, and a bridging surface portion substantially flush with said first and second major surface portions, and extending between recessed surface portions at respective opposite sides of said bridging surface portion.
A method of forming an end closure of a carton sleeve comprising receiving a carton sleeve on a mandrel, said mandrel including a mandrel cap comprising a bearing surface having first and second major surface portions at substantially the same level as each other, and a bridging surface portion substantially flush with said first and second major surface portions, and recessed surface portions at respective opposite sides of said bridging surface portion, and pressing an end press against the outer surface of said end closure.
A sheet material blank comprised of a layer of cellulosic material and a layer of thermoplastics material, said blank comprising a row of body panels (P1-P4) comprised of first, second, third and fourth body panels (P1-P4), and a row of end closure panels (P6-P9) extending substantially parallelly to said row of body panels (P1-P4) and comprised of first, second, third and fourth end closure panels (P6-P9), whereof each end closure panel (P6-P9) has an edge (E1-E4), and whereof each of the second (P7) and fourth (P9) end closure panels has first and second oblique lines of weakness (S1, S11, S2, S12) which divide its panel into a central sub-panel (P7a, P9a) adjacent the corresponding second or fourth body panel (P2, P4) and two end sub-panels (P7b, P7c, P9b, P9c) adjacent the corresponding edges (E2, E4), wherein said end sub-panels (P7b, P7c, P9b, P9c) bulge away from its corresponding edge (E2, E4).
A method of forming a container of sheet material, including providing an open container sleeve comprised of a layer of cellulosic material and a layer of thermoplastics material, said sleeve being comprised of body portions (P1-P4) and end closure wall portions (P6-P9) including first and second groups of substantially triangular end wall portions (P7a-P7c, P9a-P9c) each including an inner, substantially triangular wall portion (P7a, P9a) extending from a corresponding body portion (P2, P4) to an apex (A1, A2), folding said end closure wall portions (P6-P9) inwardly to form an end closure, and thereby causing each apex (A1, A2) to direct away from the interior of said container sleeve towards said layer of thermoplastics material, and sealing said end closure by softening of thermoplastics material of said end closure.
A sheet material blank comprised of a layer of cellulosic material and a layer of thermoplastics material, said blank comprising a row of body panels (P1-P4) comprised of first, second, third and fourth body panels (P1-P4), and a row of end closure panels (P6-P9) extending substantially parallelly to said row of body panels (P1-P4) and comprised of first, second, third and fourth end closure panels (P6-P9), whereof each of the second (P7) and fourth (P9) end closure panels has first and second oblique lines of weakness (S1, S11, S2, S12) which divide its panel into a central sub-panel (P7a, P9a) adjacent the corresponding second or fourth body panel (P2, P4) and two end sub-panels (P7b, P7c, P9b, P9c), each of said central sub-panels (P7a, P9a) being substantially triangular and extending from a corresponding body panel (P2, P4) to an apex (A1, A2) and whereof the first end closure panel (P6) comprises a sub-panel (P6a) and a central lug (P6b) projecting centrally outwardly with respect to the sub-panel (P6a), said central lug (P6b) being separated from said sub-panel (P6a) by a line of weakness (S6), said line of weakness (S6) is off-set relative to an imaginary line passing through both apices (A1, A2) and in a direction away from said first end closure panel (P6), wherein said first end closure panel (P6) includes an edge (E1) including curved portions (E1a) at respective opposite sides of said central lug (P6b).
A container of sheet material comprised of a layer of cellulosic material and a layer of thermoplastics material, said container including
Dependencies are inferred from the claim text.