Patents Assigned to Crystal B.V.
  • Patent number: 7285082
    Abstract: A method, apparatus for practicing the method, and article manufactured by the method in which a block is cut out with side wall and end wall panels, the end wall panels attached to the side wall panels via end wall fold lines. The box includes a pour opening. Recesses are provided in at least one of the end wall panels for exposing adhesive for attaching the flexible material strip to the corresponding end wall panel.
    Type: Grant
    Filed: March 8, 2000
    Date of Patent: October 23, 2007
    Assignee: Crystal B.V.
    Inventor: Stephen Walker
  • Patent number: 6056680
    Abstract: A method for manufacturing an airtight box from cardboard. The box has side wall panels and end wall panels. After a blank has been cut out, a flexible material strip is connected with the side wall panels and a number of end wall panels through adhesion. The material strip is attached to each of a number of other end wall panels while leaving clear two triangular portions not provided with adhesive which are located adjacent the free edges of the corresponding end panel. The blank is then erected to form a box through folding and adhesion with the adhesive being applied to the blank by at least one stamp. The stamp is of such design that the adhesive layer on the relevant end wall panel terminates at some distance from the edge of the adjacent end wall panel.
    Type: Grant
    Filed: August 31, 1998
    Date of Patent: May 2, 2000
    Assignee: Crystal B.V.
    Inventor: Anna Spronk-Dik
  • Patent number: 5711479
    Abstract: The invention relates to a boxlike package to be produced by folding and adhesion, which package comprises a dispensing opening provision (8) which is provided at the location of a corner point (7) of the package. The dispensing opening provision (8) is dust-tightly reclosable and is so designed that no wall portions or like obstacles are situated in the dispensing path. The dispensing opening provision comprises an anti push-through panel (14) with anti push-through portions (14a) which prevent the parts (9, 12) which close off the dispensing opening from being pushed into the box interior during the reclosure of the dispensing opening provision (8). The boxlike package may further comprise a look edge (15) which prevents the dispensing opening from being opened unintentionally by shaking or shocks.
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: January 27, 1998
    Assignee: Crystal B.V.
    Inventor: Johannes Fredericus Spronk
  • Patent number: 5685479
    Abstract: A box-like packaging comprises at least three adjoining sidewalls which are successively connected through fold lines which form the edges of the packaging. At least one sidewall is connected through a fold line at a lower edge thereof with a bottom panel which closes the packaging at the underside. The packaging comprises a relatively large dispensing opening which can be passed from a closed position into an opening position through folding, the dispensing opening comprising a spout-shaped dispensing surface. The bottom panel and a top panel of the box are substantially flat and extend parallel to each other. The packaging comprises structure for sealing integrally connected with the packaging manufactured from one material portion.
    Type: Grant
    Filed: November 2, 1994
    Date of Patent: November 11, 1997
    Assignee: Crystal B.V.
    Inventor: Martin Gerhard Weber-Caspers