GB2336566A

GB2336566A - Reinforced board

Info

Publication number: GB2336566A
Application number: GB9909127A
Authority: GB
Inventors: Simon Paul Carrington
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-25
Filing date: 1999-04-22
Publication date: 1999-10-27
Anticipated expiration: 2019-04-22
Also published as: GB9909127D0; GB9808735D0; GB2336566B

Abstract

A board is reinforced by a geometric pattern composed of helix. A more efficient substrate is formed from a sheet and patterned with corrugations conforming to, the combination of a trapezoidal lattice made up of helix, for the purpose of increaseing rigidity in board materials. Such a pattern increases the surface area of a given sheet material by 100% and is suitable for use as substrate and also as, traction/tread surfaces, condenser surfaces, heat exchanger, damping and insulation material. A new image and pattern is provided for decor, an optical illusion and geometric, polarising grid suitable for optical product design, computer graphics and image enhancement.

Description

2336566 SILET DescriDtion In a given sheet or board material such as a

door laminate. a cardboard honeycombe structural reinforcing layer may be sandwhiched bet-,,ieen two layers of hardboard or plywood so as to reinforce the door.mmaking it strong but This invention provides a new reinforcing pattern working in place of for example a honcycombe structure or other reinforcing lattice. The novelty of the new pattern lays in the fact that it lacks straight lines which can cause weakness faults such as those laying paralell to the corrugations in corrugated paper for example.

Along with the property of random directionality of line In the is, pattern of reinforcing the anchoring effect of single, helical stress absorbing spars making up,in this case,trapezoidal shaped helix.The main zig-zag lines of the overall grid are anchored to it and to the other fifty percent of the sheet. by means of these helix which underpin the overall strength and evenness of flexure of the reinforced sheet. So by avoiding straight lines and using the anchoring effects of a trapezoidal helix,the effect is to create a reinforced board for example, which has non directional rigidity which is not commromised in the same way as would be a conventional geometric reinforcing lattice. TI-ne overall pattern of this trapezoidal grid. composed of helix contai"-is some Daralell line but where thev do occour they are botla oblique and staggered to offset.,;eal--.nesses causeJj. thereby.

C, The helical reinforcing subs trate,,v.,ien it is san-TYhic".iedbet.ve--, -.1 two sheets renresents ---lso a network of tubes.,-it.,i sli2:.it to the moulding tools is is possible to nro.;uce a substrate moulding w'liiclii -.tlien made _into board has mn su--fn-oe tliat is in tlie air outside.This is to sn.y Me tructure of tlie board cc-in be air permeable tl..irougl-iout.Tliere Eor anart from -iliere substrate is bonded to surface materials -i'UR a--it-i--!-e surface is in co-,i'un.c'li with the air at tlie edges of t'le sheet.

Given this -oerm.eability to air/fluid it dmorbent for ex.wnple to water Then. at canpilliary tube scale n-nd the new riateriRl may also be suitable 'or other s-oecific uses such as:

He.,it exchanger m,,i'uerial,tr--4.ctio-,i surface (,7.,ater dispersion s. LirfgLce) -j'o-.ide,.iser surface for co,.i:e,.isi-,,ig for example water vapour.

Tle material is suitable for optic,.,.1 purposes sucla as condensing 4m.-,ges,for exnu-nple a computer screen may be fitted with such a micro-patterned screen.This modificaLtion would allow..th-e screen to be read t.irough the patterned transparent bar-l-ier screen wl-.iilst it would also soften the in,-tge,-,aodifying the colourspread.

Currently polycarbonate micro engineered samples are being made W it is expected that image or colour intensification nay be the main results,when these are tested as visual display accessories.

Since the -ie,.;r material is hollow,permeable to air throughout by of tl.---.4s pat-tern of expansive and cohesive network of channels in the substrates structure. This compositio-i make 4-1-he board -an acoustically well dam-oed neutral-.- material is suitable 10or acoustic damping an't soundproofing purposes.

The -0attern cal be noulded into sheet or board using rideing uo form the pattern or P--essed into metal sheet to -form a corr u!yated sheet non-directional rigidity.

Vaccuum formed or moulded plastic sheet can bn.. c-haped i n th i S way to maIce it m;,".iy times stronger and of a uniform rigidity.

The resultin,- mate.rials impressed with this pattern illustrated in Fi.-. 1 will. be of considerable value in anplicationS where great stiffness and low mass materials are required for design of for example:- air-frames gveh-ieles, bui-ldi-,-igs,cla'u,_ni,.1g/i- nterior design and as a new image and texture for optical enhancement.

C-- -0 Since the laminated material incorperating this pattern would trap air anb th-cre-for be composed largely of it and given that helical C) voids have considerable damping and acoustic properties,the boa--d or laminated version of this design could be used also widely for its acoustic and damping properties. Such a material could be perforated to allow air movement throughout its striletur for enhancement of these acoustic and damping qualities.

Claims

CIAIMS.

TA means of reinforcing a sheet with a uniform stress pattern over fifty percent of its surface having no welk points but uniform stiffness and flex-wre. 2.A means of prestressing sheet materials by impressing of moulding the pattern into them or by reinforcing the material with the pattern. TA way of reinforcing evenly a flat surface or sheet by raising a non linear pattern on fifty percent of its surface or structure. CA virtually random geometrical pattern composed of a trapezium shaped helical spar. 5. A helical spar following the contours of a trapezium or rhombus. 6.A zig-zag lattice or grid composed of helical members occuTying the spaces therein.

7. A new ducting means and pattern of channels,providing a more efficient means of spread for fluids over a flat area and means of reAforcing that plane/ sheet. 8. A traction surface and new pattern for Te tyre surfaces helpfull for example in grip and water dispersion. 9. A tlat sheet given twice its surface area by means,of a corrugated relief pattern of helix, interconnected and usefull as a condenser surface i.e. for condensing water vapour. 10. The substrate when formed into a micro-engineered and laninRted bldek becomes ahsorent throughout by =eans of the eRpilliary action of wnter.

Amendments to the claims have been filed as follows Clains.

1.

A geometrical reinf orcin- pattern in t,.ie. f or-l- of -a laittic a-nd coiisis'uiil-- Of a Dluralitir of helical cross-3ectJ--O'-,ls :or use as a core r.igter-ial,ot'-,ier t'na-n 'Iion.ey.-om.b,for rei,- nforei--,.iz board and sheet materials 2.A pattern.3.,ccordi -d- ' -Luo cl--1i:n 1.7,fno 1 s use as a reinforcing core m:iy provide sheets bo- ideJ to it with multi-directional planar rigidity and even-iess of flexure t'nrou-liout. 3.J, pattern,ccordi,.ig to cla-im 1 wherei-n eacIri lielical rienber is identical in size and shape to tie next to-,,y,et'ier, --7_4'u into a regular 7eo-,-.iet.-ic -rid or 1.,-i','uice.

patter-n -iccord.i,,i.r to claiM rleans of covering a sur-Lo-.::ce with helix wlierein tInese fit together and the lines of such a -are all equidistant to 5.A p,-.ttern conforning to clains 3 SI 4 of a tra-oezoid,il.-rid.

6.A pattern according to claim.s 3 & 4 achieved by the use of a r;.io-.iboi-d.iil grid.

7.-2einforni-ii- I- sheet- ly b-,.-, use of core oi- a'uuer,-le C. M l 0 composed of a plurality of helical cross sections other til-an 3i.on.eycob.

t'.ie',-djace.-it tmes: 1 achieved bv the use m - S_