Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Reexamination Certificate
1998-11-02
2001-07-03
Gray, Linda L (Department: 1734)
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
C156S269000, C156S270000, C156S277000, C156S513000, C235S07000R, C040S491000, C040S492000, C040S495000
Reexamination Certificate
active
06254713
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a method for producing a composite layer-like information carrier with an upper and a lower cover layer and a center intermediate layer having two parallel separating slits extending through it in the longitudinal direction, so that a sliding tongue is formed, which can be moved in the longitudinal direction, wherein the pieces of information are provided with a defined association by an appropriate positioning of the sliding tongue with in respect to the cover layer and in particular can be viewed through a window-like recess or a transparent section in the cover layer.
Such an information carrier is known, for example, from German Patent DE 31 48 355 C2. The basic method for producing such an information carrier is described in this document. Based on this, it is the object of the present application to make the manufacture of such information carriers even more cost-effective and therefore more efficient.
SUMMARY OF THE INVENTION
This object is attained in accordance with the present invention by a method with the following method steps:
making available sheets constituting the upper and the lower cover layer and a sheet constituting the intermediate layer, whose length, and preferably also whose width is a multiple of the length, or respectively the width, of the information carrier to be produced,
cutting a plurality of separating slits, which extend one behind the other in the longitudinal direction, are aligned with each other and are separated by a strip, in several parallel rows, in the sheet constituting the intermediate layer,
layered arrangement and connection of the sheets in areas outside of the parallel separating slits, each of which delimits a respective sliding tongue,
cutting the composite layer structure formed in this way and containing a matrix-like arrangement of information carriers to be produced in such a way, that the cut, which delimits an information carrier transversely with respect to the longitudinal direction respectively intersects the separating slits of the latter, so that the connection of the sliding tongue to the sheet constituting the intermediate layer is severed.
Thus, by means of the present invention it is possible in a particularly advantageous manner to produce a plurality of information carriers in one work step by making available sheets constituting the several layers, and cutting the separating slits, as well as by layering, connecting and cutting the sheets.
By means of this it is possible to produce a considerably larger number of information carriers in one work step, so to speak.
It has been shown to be particularly advantageous if C-shaped or V-shaped stamped cuts are made in the sheets constituting the upper and/or the lower cover layer, which in the course of cutting the composite layer structure are intercepted by a cut delimiting the information carrier transversely with respect to the longitudinal direction and in this way form recesses open toward the edge in the cover layer(s), which permit grasping the sliding tongue in a very comfortable way. To this end the sheets are stamped in accordance with a predetermined pattern.
The slits are milled, preferably with a slit width of 0.05 to 0.2 mm, most preferably of approximately 0.1 mm, in a manner known per se by means of small circular saw blades. By means of this it is possible to achieve an exact parallelism of the separating surfaces located across from each other, or respectively facing each other, of the center layer. The roughness of the surface generated by this has an advantageous effect in that it is suitable for storing sliding means, which possibly have been added.
Markings are provided on the sheets in an advantageous manner, which are used as positioning aids in the course of the composite-like arrangement of the sheets on top of each other.
The sheets on which the information carriers to be produced are provided in the form of quasi matrix elements, are preferably printed with information before they are connected with each other.
Adhesive methods, arbitrary per se, have proven themselves for connecting the sheets with each other, such as gluing, high frequency or ultrasonic welding, even riveting or, if metals are used, spot welding. With sheets made of paper or plastic materials, however, the connection by means of an adhesive is given preference. In an advantageous manner the adhesive can be applied in a pressure process. In this case it has been shown to be advantageous if only one sheet, namely the sheet which constitutes the intermediate layer, is coated on both sides with adhesive.
In accordance with a preferred further development of the method in accordance with the present invention it is proposed that more than two parallel separating slits per information carrier to be produced are made in the intermediate layer, so that several sliding tongues per information carrier are delimited. This opens the option of producing information carriers with respectively several slides in one production step.
In accordance with a further embodiment variant, an even number of parallel separating slits per information carrier to be produced is cut into the intermediate layer, wherein respectively two separating slits are associated with each other and delimit one sliding tongue, and wherein an intermediate strip remains between the sliding tongues, which is connected with the sheets constituting the upper and the lower cover layer.
In accordance with a preferred embodiment variant, at least one of the separating slits delimiting a sliding tongue is made with a step-shaped offset, or respectively is cut into the sheet constituting the intermediate layer. This step-shaped offset then can form a detent area, which prevents the unintentional pulling of the sliding tongue out of the information carrier to be produced. To achieve such a security in both directions, it is proposed that adjoining the step-shaped offset a partial section be cut out of the sheet constituting the intermediate layer, wherein the longitudinal extension of this partial section defines the possible displacement path of the detent area and thus of the sliding tongue.
In accordance with a further advantageous concept of the present invention, the step-shaped offset is formed between two adjoining sliding tongues, so that a pulling means is formed which, when the one sliding tongue is displaced in at least one direction, takes the other along.
In accordance with a further, particularly preferred method variant, several sheets constituting intermediate layers are made available and provided with separating slits; thereafter the sheets are arranged on top of each other in such a way that the separating slits of the one sheet extend at an angle with respect to the separating slits of the other sheet, wherein the angle advantageously will be 90°. It is possible in this way to produce information carriers with sliding tongues which can be displaced at an angle to each other.
But the present invention also relates to a method for producing a composite-like information carrier with an upper and a lower cover layer and a center intermediate layer which, by the application of a circle-shaped separating slit, forms a circular plate except for a cut off edge area and guides it rotatably between the cover layers, wherein the plate can be viewed through a recess in one of the cover layers and can be manually grasped, and wherein the pieces of information have a defined association by means of an appropriate positioning of the plate in relation to the cover layer. Such an information carrier had been described in Applicant's not pre-published patent application No. 197 36 161.7.
It is also an object of the present invention to recite a production method for this information carrier, which can be cost-effectively performed.
This further object is attained by a method with the following method steps:
making available sheets constituting the upper and the lower cover layer and a sheet constituting the intermediate layer, whose length and/or width
Gray Linda L
IWA F. Riehle GmbH
Jones Tullar & Cooper P.C.
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