Method and system for creating co-layer surface adhesive rule
A co-layer surface-adhesive rule (SAR) that has a pre-defined cross-section profile. The co-layer surface-adhesive rule (SAR) has two or more layers, wherein at least one layer is made from flexible material and wherein at least two layers differ one from the other.
1. An apparatus for treating a cardboard workpiece, the apparatus comprising a rule die, the rule die comprising:
a die body having a broad surface; and
a plurality of elongate rules protruding above said broad surface of said die body in order that, when a cardboard workpiece is subjected to compression between the die and a counter die, said rules deform a surface of said workpiece facing the die to form elongate depressions therein,
said rules being surface adhesive rules formed of a polymeric material and bonded to said broad surface, each rule of said rules having
a respective first elongate surface facing said broad surface and bonded thereto, and
a respective second elongate surface contiguous with said first elongate surface, which second elongate surface protrudes above said broad surface such that at least a polymeric region of said rule furthest remote from said broad surface contacts said surface of said workpiece during said compression.
2. The apparatus of claim 1 , said die body including a film substrate forming at least a portion of said broad surface, which substrate being sufficiently flexible to be capable of being wrapped around a drum of a die base, from an initial flat configuration.
3. The apparatus of claim 2 , said film substrate including a layer selected from the group consisting of an aluminum layer and a stainless steel layer.
4. The apparatus of claim 2 , wherein the film substrate includes a layer of polymeric material.
5. The apparatus of claim 4 , wherein said polymeric material in said film substrate includes at least one material selected from the group consisting of polyester, polycarbonate, polyethylene terephthalate, polyamide, and polypropylene.
6. The apparatus of claim 4 , a height of said rule being up to several millimeters.
7. The apparatus of claim 4 , a width of said rule being within a range of 700 microns to 1250 microns.
8. The apparatus of claim 1 , wherein each said rule is bonded to said broad surface of said film substrate by means of an intermediate adhesive material.
9. The apparatus of claim 1 , wherein at least one said rule includes at least two layers made of different materials.
10. The apparatus of claim 1 , said region having an asymmetrical cross-section.
11. The apparatus of claim 1 , said region having a rectangular cross-section.
12. The apparatus of claim 1 , said region having a trapezoidal cross-section.
13. The apparatus of claim 1 , said region having a rounded cross-section.
14. The apparatus of claim 1 , said region having a triangular cross-section.
15. The apparatus of claim 1 , a height of said rule being within a range of 700 microns to 1250 microns, and a width of said rule being within a range of 700 microns to 1250 microns.
16. An apparatus according to claim 1 , the apparatus further comprising a counter die as recited in claim 1 , said counter die being disposed generally opposite said rule die.
17. The apparatus of claim 16 , said counter die having a base and a resilient layer overlying and attached to said base, which layer comprises at least one polymer.
18. The apparatus of claim 17 , said resilient layer selected to be adaptive to a protrusion of said rules during said compression between said rule die and said counter die.
19. The apparatus of claim 16 , said counter die having a blank counter surface disposed opposite each of said rules, such that when the cardboard workpiece is subjected to said compression between said rule die and said counter die, said blank counter surface oppose said rules.
20. The apparatus of claim 16 , said counter die having a base and a resilient layer overlying and attached to said base, said layer and said base both comprising at least one polymer.
21. The apparatus of claim 16 , said counter die including a polymer selected from the group consisting of polyurethane, ethylene propylene diene monomer (EPDM) rubber, nitrile butadiene rubber (NBR), acrylic rubber, silicone rubber, and styrene butadiene rubber (SBR).
22. An apparatus according to claim 16 wherein:
said counter die has a blank counter surface disposed opposite each of said elongate rules, such that when the cardboard workpiece undergoes said compression between said rule die and said counter die, said blank counter surface opposes said elongate rules.