Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1992-10-06
1994-11-15
Ball, Michael
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156269, 156291, 156512, B31D 302, B32B 3100
Patent
active
053644859
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a method of manufacturing a laminate for a honeycomb structure, capable of simply and accurately fabricating a structure in which a honeycomb core is not deformed, and not deviated.
In conventional methods of manufacturing a laminate for a honeycomb structure, a plurality of sheets on which stripes of adhesive are coated and sheets on which no adhesive are coated are alternately wound on a spool by deviating the front and rear surfaces of the sheets at pitches by rewinding a take-up roll (as disclosed in Japanese Patent Laid-open No. Sho 60-15747).
There has also been proposed another method of manufacturing a laminate for a honeycomb structure, in which sheets coated with adhesive on the front and rear surfaces are alternately stacked while being folded in opposite directions and adhered on the front and rear surfaces to each other (as disclosed in Japanese Patent Publication No. Sho 31-6841).
In the above-described conventional methods, the sheets are coated with the adhesive after the sheets are laminated. Additionally, the adhesive is applied by a fixed adhesive coating apparatus.
However, according to these methods, even if the adhesive coating apparatus is fixed, the sheets in a zigzag manner after the sheets are coated with the adhesive and thus deviating the positions of honeycomb cells. Since the sheets were first laminated while winding or folding the sheets on a drum or a spool, it is a disadvantage that the honeycomb cells were deviated due to the deviations of the sheets at the time of winding or folding the sheets.
Since the sheets were coated with the adhesive according to a letter press system, it was difficult to coat the sheets with the adhesive of a constant amount in a predetermined width even under the same conditions due to the material of the sheets and the types or viscosity of the adhesive, and hence the structure of the honeycomb cells have been erroneously manufactured.
According to the conventional method, since the adhesive before curing was soft, the sheets were deviated therebetween at the time of compression.
The minimum width of coating the adhesive is about 2 mm in the conventional adhesive coating mechanism, and the minimum pitch width of coating the sheets with the adhesive is more or less about 7 mm. Therefore, the minimum limit of the structure of the honeycomb cells is about 3 mm, thus making it difficult to manufacture fine honeycomb cells.
SUMMARY OF THE INVENTION
It is an object of this invention to provide a method of manufacturing a laminate for a honeycomb structure which improves upon the conventional methods and can simply and accurately manufacture honeycomb cells of various types from fine to large sizes always with constant honeycomb cells.
According to one aspect of this invention, there is provided a method of manufacturing a laminate for a honeycomb structure comprising the steps of: (a) coating a surface of a first sheet with a plurality of stripes of adhesive (15) having a predetermined interval laterally of said first sheet, said first sheet being already drawn on a flat surface of a trestle (1) and cut in a predetermined length; (b) drawing a second sheet from a second supply roll installed at one longitudinal side of said trestle to stack the second sheet on the first sheet coated with adhesive (15) in the step (a); (c) pressing the second sheet (B); (d) cutting the second sheet in a predetermined length; (e) longitudinally coating a surface of the second sheet with a plurality stripes of adhesive (16) having a predetermined interval laterally of said second sheet as deviated at its pitch from said plurality of stripes of said adhesive (15); (f) drawing a third sheet from a first supply roll installed at an opposite side of said second supply roll to stack it on the second sheet coated with the adhesive; (g) pressing the third sheet onto the second sheet; (h) cutting the third sheet in a predetermined length; and (i) sequentially repeating the steps (a) to (h).
According to another aspect of
REFERENCES:
patent: 2848132 (1958-08-01), Davous
patent: 3971691 (1976-07-01), Cairns
patent: 5277732 (1994-01-01), Meier
Ball Michael
Crispino Richard
Oji Kenzai Kogyo Co., Ltd.
LandOfFree
Method of manufacturing laminate for honeycomb structure does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing laminate for honeycomb structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing laminate for honeycomb structure will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1094611