DE-9204293 U (1992-03-30); DE-9206863 U (1992-05-20); DE-4234689 (1992-10-14); EP-0101663 (1993-02-03)
발명자
/ 주소
Laves Wolf-Henning (Groenenbach DEX)
출원인 / 주소
Hans Kolb Wellpappe GmbH & Co. (Memmingen DEX 03)
인용정보
피인용 횟수 :
3인용 특허 :
0
초록▼
In the case of a corrugated board W, which comprises at least one corrugated core layer 1 and at least one flat cover layer 2, 3, at least one electrostatically-shielding layer 4 is provided in the interior structure between the core layer 1 and said cover layer 2, whereas the outer side of the corr
In the case of a corrugated board W, which comprises at least one corrugated core layer 1 and at least one flat cover layer 2, 3, at least one electrostatically-shielding layer 4 is provided in the interior structure between the core layer 1 and said cover layer 2, whereas the outer side of the corrugated board W is provided with a conducting lacquer 5, 6 applied to the cover layer 2, 3. The conducting lacquer 5, 6 may be combined with a corrosion inhibitor 14. The shielding layer 4 is formed either continuously, or such that it comprises interconnected layer components 80 and intermediate, interruptions 90 occupying a certain area and interrupting the areas which are glued together, or such that it comprises highly compacted, interconnected layer components 12 and intermediate, less highly compacted layer components 13, or such that it comprises high, interconnected layer components 15 and intermediate lower layer components 16 which occupy a certain area. (FIG. 12 ).
대표청구항▼
A corrugated board consisting of paperboard or paper material and used for folding cases or for sheet materials for protecting electrostatically endangered articles against electrostatic discharges and electric fields, comprising a corrugated core layer, a flat cover layer on one side of said corrug
A corrugated board consisting of paperboard or paper material and used for folding cases or for sheet materials for protecting electrostatically endangered articles against electrostatic discharges and electric fields, comprising a corrugated core layer, a flat cover layer on one side of said corrugated core layer, a low ohmic electrostatically shielding layer (4) positioned between said corrugated core layer and said cover layer, said low ohmic electrostatically shielding layer is continuous with an approximately uniform thickness and is selected from shielding material selected from the group consisting of carbon black, graphite and mixtures thereof, said low ohmic electrostatically shielding layer (4) comprises a network or a latticework, interconnected, highly compacted layer components (12) as well as intermediate weakly compacted layer components (13) which occupy a certain area, said highly compacted layer components (12) are formed by repeated printing processes and the weakly compacted layer components (13) are formed by one or two full-areas printing processes, a continuous layer of conducting lacquer on one surface of said cover layer, said one surface facing away from said corrugated core layer and said low ohmic electrostatically shielding layer being separated from said conducting lacquer. A corrugated board (W) consisting of paperboard or paper material and used for folding cases (F) or for sheet materials (B) for protecting electrostatically endangered articles (10) against electrostatic discharges and electric fields, comprising at least one corrugated core layer (1, 1′), a flat cover layer (2) on at least one side of said core layer, at least one low ohmic electrostatically shielding layer (4, 4a , 4′5) positioned between said core layer and said cover layer, said shielding layer being selected from shielding material selected from the group consisting of carbon black, graphite and mixtures thereof, a continuous layer of conducting lacquer (5,6) on one surface of said cover layer, said one surface facing away from said core layer, and said shielding layer being separated from said conducting lacquer.
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이 특허를 인용한 특허 (3)
Finestone Arnold B. ; Bloch Gilbert, Cardboard and corrugated board container having laminated walls.
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