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US 4,641,777 AGranted
Prismatic container obtained from a flat cardboard blank with a diaphragm end closure device formed by stamping a part of the flat blank
AssigneeCartotecnica Tifernate S.p.A.
InventorDomenico Fronduti
Life of this patent
Estimating the term…
Abstract
A container of prismatic form, in particular for loose sweetmeat products, obtained starting from a unitary flat blank or from two cardboard flat blank parts, in which the opening and closure respectively of the container itself for withdrawal of the product contained therein takes place by telescopically sliding one part of the assembled blank over the other part thereof, this sliding causing, in accordance with the direction in which it takes place, opening or closure of one end of the container by means of a substantially diaphragm device formed by means of particular shaping by die cutting of a part of the unitary flat blank or one of the two flat blank parts.
Claims7
At least one flat blank for forming a polygonal container, comprising:
- a first rectangular part sub-divided into equal rectangular panels by longitudinal parallel score lines, the first part including at one side a lateral flap of dimensions substantially equal to those of one of the panels and having an opposite face which can be joined by gluing to the panel situated at a side opposite from the lateral flap;
- a second central part delimited from the first part by a transverse score line, and partially sub-divided into shaped panels each constituting a prolongation of a respecitve one of the panels of the first part, the shapes of the said shaped panels being defined by empty spaces in the form of isosceles trapezoids of equal dimensions, the longer bases of which are aligned with the parallel longitudinal score lines of the first part and the smaller bases of which have a minimum length, the second central part likewise having, in a portion thereof adjacent the first part, a further transverse score line and longitudinal score lines between the transverse score lines aligned with the corresponding longitudinal score lines of the first part, the shaped panels being transversely traversed in their median part by pairs of closely spaced parallel lines which intersect the ends of the smaller bases of the isosceles trapezoids;
- a third part of generally rectangular shape and subdivided for the whole of its length by parallel longitudinal score lines aligned with the corresponding longitudinal score lines of the first part, into identical panels and into a second lateral flap of dimensions substantially equal to those of any of the said identical panels, the second flap being located at one side of the third part and adapted to be glued to a rear face of the identical panel situated at an opposite side from the second flap,
- and projections foldable along transverse score lines which form sides for connection with suitable panels of the third part of the blank, the projections being adapted to form a transverse wall of the container when the first and third parts are erected with their flaps adhered to their respective panels to form a hollow polygonal cross-sectional container,
- wherein a first one of the projections is connected to the panel situated at the side opposite from the second flap, the first projection having a substantially trapezoidal form with the smaller angles rounded and including two inclined and symmetrical score lines such as to delimit a remaining part of the projection in such a way as to confer on the remaining part of polygonal form having sides of a length equal to the width of the individual longitudinal panels of the third part and equal in number thereto so that the remaining part is in the final configuration of an adjacent end of the container, and to define two lower lateral guide flaps which bend automatically along their respective score lines when the container is erected, for subsequently facilitating sliding movement of the remaining part within the container and insuring proper closure of the adjacent end of the container,
- and wherein a second one of the projections is connected by means of a transverse score line to an edge of the panel which is opposite, during assembly of the blank to form the container, to the identical panel intended to be glued to the second flap, the second projection having a polygonal form having sides of a length equal to the width of the individual longitudinal panels and equal in number thereto so that the second projection also is in the final configuration of the adjacent end of the container, and the second projection being sub-divided into two halves by a transverse score line parallel to the edge of the third part of the flat blank, for folding the second projection in half, there being provided on the half of the second projection not connected to the third part a region for the application of adhesive for gluing to the first projection.
3 more elements
At least one flat blank for forming a polygonal container comprising:
- a first rectangular part sub-divided into equal rectangular panels by longitudinal parallel score lines, the first part including at one side a lateral flap of dimensions substantially equal to those of one of the panels and having an opposite face which can be joined by gluing to the panel situated at a side opposite from the lateral flap;
- a second central part delimited from the first part by a transverse score line, and partially subdivided into shaped panels each constituting a prolongation of a respective one of the panels of the first part, the shapes of the said shaped panels being defined by empty spaces in the form of isosceles trapezoids of equal dimensions, the longer bases of which are aligned with the parallel longitudinal score lines of the first part and the smaller bases of which have a minimum length, the second central part likewise having, in a portion thereof adjacent the first part, a further transverse score line and longitudinal score lines between the transverse score lines and aligned with the corresponding longitudinal score lines of the first part, the shaped panels being transversely traversed in their median part by pairs of closely spaced parallel lines which intersect the ends of the smaller bases of the isosceles trapezoids;
- a third part of generally rectangular shape and sub-divided for the whole of its length by parallel longitudinal score lines aligned with the corresponding longitudinal score lines of the first part, into identical panels and into a second leateral flap of dimensions substantially equal to those of any of the said identical panels, the second flap being located at one side of the third part and adapted to be glued to a rear face of the identical panel situated at an opposite side from the second flap,
- and projections foldable along transverse score lines which form sides for connection with suitable panels of the third part of the blank, the projections being adapted to form a transverse wall of the container when the first and third parts are erected with their flaps adhered to their respective panels to form a hollow polygonal cross-sectional container,
- wherein two panels of the third part of the flat blank, intended to be opposite during assembly of the blank to form the container, each have first and second ones of the projections, each of the first and second projections having a polygonal shape with edges of a length equal to the width of the individual panels of the third part and of equal number so that the polygonal projections are in the final configuration of an adjacent end of the container, and wherein the remaining panels of the third part each have another one of the projections, each of the latter projections being of an equilateral triangular shape having edges of a length equal to the width of any of the panels of the third part, with selected faces of the triangular projections and the polygonal projections being capable of being suitably provided with adhesive for the closure of the adjacent end of the assembled container in three-dimensional form, and all of the projections being connected to the parts of the blank by score lines.
2 more elements
Dependencies are inferred from the claim text.