摘要:
A filter cartridge of the type made from a sheet of filter paper pleated as an accordion on a cylindrical surface. It is produced by pinching pairs of contiguous pleats at various levels in order to make on the outer surface of the cartridge a plurality of honeycombs. The invention results in substantially prolonged life of the filter cartridges, which have applications in a variety of uses, including regeneration of solvents of washing baths for dry cleaning machines, filtration of air for internal combustion engines and water filtration.
摘要:
Unexpanded structural honeycomb material formed of permanently creasable material is extended in its expansion direction and compressed perpendicular to the expansion direction, e.g. between pressure rollers, so that the cells adopt a configuration in which they have dimensions in the expansion direction which are large compared with their dimensions in the direction of compression and the creasable material is creased. On subsequently being allowed to expand, the material adopts a self-sustaining open cellular configuration.
摘要:
Apparatus for producing continuous unexpanded honeycomb material from slices of unexpanded material has a magazine for delivering the slices to a ramming station in turn, a ramming device for ramming them from the station in their expansion direction through a gripping guideway, and an adhesive applicator for applying adhesive to the slices so that they adhere together in the guideway under the ramming pressure. Provision may be made for feeding the magazine with layers of unexpanded slices from a stillage.The apparatus may be joined to a machine for lapping the unexpanded material for storage or transport if required.
摘要:
This invention relates to an improved flame retardant honeycomb comprising high modulus fiber and a flame retardant thermoplastic binder having a melt point of from 120° C. to 350° C. and a limiting oxygen index of 26 or greater, methods for making the honeycomb, and articles comprising the honeycomb. In a preferred embodiment the paper in the honeycomb has a flame classification of UL-94 V-0.
摘要:
In the manufacture of a noise attenuation panel for an aeroengine nacelle an adhesive film is applied to a front face of a cellular component of the panel. The adhesive film is caused to reticulate to the ends of the walls of the cells at the front face of the cellular component. A perforate facing component of the panel is bonded to the front face of the cellular component by adhesive flow from the cell walls to the facing component. To avoid unpredictable adhesive flow giving rise to cosmetic spots on the front face of the facing component the two components are brought together with the interposition of an adhesive flow control sheet and the reticulated adhesive caused to bond the two components together by adhesive flow under the control of the adhesive flow control sheet.
摘要:
Honeycomb forms can be held in an expanded or compressed state by the use of a lengthwise device such as a cord or similar lengthwise material threaded through holes in the honeycomb plies. This cord has a frictional surface to hold the honeycomb from unintended movement. Additionally, a semi rigid lengthwise device, such as a twisted, stranded wire may be used with the separated strands preventing the return of the end plies.