GB2473428A

GB2473428A - A door

Info

Publication number: GB2473428A
Application number: GB0915533A
Authority: GB
Inventors: Stephen Hutsby
Original assignee: Leaderflush and Shapland Ltd; SIG Manufacturing Ltd
Current assignee: Leaderflush and Shapland Ltd; SIG Manufacturing Ltd
Priority date: 2009-09-07
Filing date: 2009-09-07
Publication date: 2011-03-16
Also published as: GB0915533D0

Abstract

A door 50 comprises a door core 12 which has first and second opposed faces 14, 16 that are interposed by a pair of side edges 18 and a pair of opposed end edges 20, 22 and a first covering layer 24 which lies over each of the first face 14 and the pair of side edges 18 and at least a first end edge 20, and a second covering layer 26 which lies over at least the second face 16. The first and second covering layers 24, 26 cooperate with one another to encase at least the first end edge 20. The first and second covering layers may over the first end edge to the same extent. The first and second layers may abut each other and the abutting edges may then be welded together. Also claimed is a situation where the two covering layers do not meet on the first end edge and a strip member is used. This may be an intumescent, fire resistant, smoke or acoustic sealing member.

Description

A DOOR

fhiS vengon reiates tce door S Uoors are enaHe to daniaqe and so often they are provided with ptection n order re$uoe the neec: for mamte.nance or reciaoetiient TycaUy the protection comprises a first covering iayer which extends across a iront tacs of a door core and the svie edqes o the door core Le the irruse tcrd adage of the to door, and a second covenng layer wh.n exands across the rear face and aide ees of the door core An end ends of the door core is either the inwse top or cotiom edgo 01 the door, is protected bvthwd coverin aer which extends across the raspec.twe end edge However, such an errs nqernent creates a interface between the first arid second covering layers and the thaI covering layer which lies along the external oenmeter of the end edge. This externa penrmster is exposed and so a susceptit>ie to impact damage that causes one or more of the covering iayers to separate from the. door core in ro addon. the said interface o:efines a dirt trac that can harbour cerms and other corIteminanjs.

There s, therelore a need for an mproved door which inc.iudes an increased degree of protecton while reducing the potentcsi br damage and cordarnirlation assocated with iS conventonai doors.

Accordng.fo.nrtt aspect of the invention there is provided a door cornprisn a door core having first and second opposed faces interoosed v a oair 01 onposed side edges and a pair of opposed end edges a tirs covering Layet lying over each at the first lace and the pair of ama edges anti at least a last end edpe; and a second covering iaer lying over at least the second face.

the fret and second oove!ing layers cooperatirifi uinh one another to encase at east the first end edge.

Having the first covenng layer lie over each of the first face the pair of side edges end at ieast the first end edge reduces the extent to wftch the interface between the first end expO e>tern& pre f th rd:de, th)1C: Sntf OiflO from rr' interface between the brat and second cc srlng leers in the region of the second end edge Covenlently the first and second covedrKt layers lie over the first &:nd sensed end edoes to the sante estent. rSuc.r a catnripurat1on aows the tINt and second covenn 1w are to he Identical, and so h&ps to reduce manufacturIng coniplesity and cost.

In a further preferred ernbothnient of the Invenbon each of the first and secoref coconng avers defines at least one elongate oenpheral edge. The rovision of c'.ne ot more ir elonoate peripheral edges ensures that the first anc second covenn Laers are rwacflly able to cooperate with one another in t wa that avods any gaps therebatween, thereby fecthtatlnc the prov}sion of a fluidligtit seal between the first and second cc raring leers.

Optionay the or each elongate penphera enge of the first covenno layer abuts a corresponding elongate peripheral edge of the second oovenng layer.

Corresponding elongate peripheral edges may e welded to one another I ne foregoing features help to, ensure the fbrmation of a fluiddight seal between the first and second covering layers.

Preferably corresponding elongate peripheral edges of the brat and second cr)venng layers are interposed by a strip rnernbec The moltjslon of a atnp member orowdes the door with additional characterisbcs while enca&ng the first and second end edges to a dewred extent.

Thens now follows a brief desoriotion ci preferred errbodirnents 01 the mvenuoli by way of nondimiting examples, with reference being made to, the accompanying drawnps m yvsen Hgure I shows a perspective sew of a d,00r according to a first embodmoent of t'% è\,"\,''', Figure 2 5f':55is er' eCtloded, perspecttve wew of the ctoor shown m Hgure 1; Figure 3 shows t perspecLvf? view of a door accorthng to a seconc embodiment of the rwenton; and 55, Figure 4 shows an: exploded, perspective view of the door shown in Figure 3.

A door ar ordnt to a first embodhent of the inverThon s deannated enerafiy byrne reference numerr 10.

The door inciudes a door core 12 which has ifraf. and second onpose:d faces 4, 6 ha E. are nterposeO by a pair Of opposed side edges I and first and second end edges 20.

A first covering layer 24 lies over each of the first face 14, t'ne pair of side edr,tes 16. and h' irt't t'-,i txnc lf't %.,,,_... ,, \; .,.., \\C'..' A second crsvennO flyer $6 es over the serond face 16, the side ednes 15. and the first end edge $0.

in other errs nçernents. not forming pert of The mvenfion, one or more of the covering.

layers 2$, $6 may cover oThy the con'espondinp face 1$, 16 and the side edges 16.

Rr$urnan to the embodmnent shown, each of the first and second covenng ayers 24. 26 covers only a portion of the respecfive first and second laces 14, 10 and, in particular, only approxmateiy half of the faces 14, 16. in other embodiments (riot shown) the first 213 and second covefing ayers 2$, $6 may cover a oreater or smaller porfion of the corresponding face 14, 16.

Preferably each cit the first and second covering layers 24 $6 is: formed frcxn a material havir hnh rst resistance such as. for example. poiyvinyichl'oride (PVC) and. ri oarticVer, hicih impact PVC:.

TypIcally tue first arid second covering layers 24, 26 are betvmen 0.5 and 5mm in thmSness. and preferably $rtirn thick.

sc One or both o3 the first and second covering layers 2$. 2.6 ma include an antmcrobiai and, in partovlar an aritbaotenai. additive such as Hygienilac (PTM).

in a oreferred embodsnern of the invention the covering iayers 24, 26 are vacuum" formed so as to conform to the qeneral shape ci' the door core 12.

in other errihodments of the inventon the covenng layers 2$, 2ff mon an formed in C',"F "": ""* " fl"" " fl',' ,.n,,'fl'.

OqtkmaMy the door core 1$ may ncRJde. rcsO erween the lace.s* 1$, 13 and the corresocndfttcI ed ies 18, 20. $2. For exampie, the faces 14, 10 and adacerfl mae edges 18 may inc:iude a radma ra 0mm therebetween, and the faces 1$. 6 end adisoant and S ed:es 20, 22 a radius of 3mm therebet'ween.

Other radL may he empioyed to the extent that the door core 12. and resuftng door 10, maint&n a rectangutar appearance O The vering Layers 24. 26 may be fixed ho the: door core 12 by mlhesive, such as. a coritacs, adheeve or a U\4curabie adheswe. the cevennq tayers 24, 26 may aiso he secured to the dOOr core 12 n any other suitabie manner suon as b screws or boits The cc erirm avers 24, 26 av'aiso be secured to one another, eq. the weidir4 in such a way as 0 sandwich the, door onre 10 tfhetween.

in the. embomment shown, the first end second covenng iaye,ry, 2$. $6 he over the first end sate $0 to the same extent. in other embodiments ct the invenfion (not shown the first and second covering iayers 2$, 2: n'ny extend over the first end edge 20 to diffeong extents.

Each of the first and second cove nc layers 24. 26 defines an unbroLer'r eiongate far srai edge 2$ and, in the embodiment 500Wfl, the. peripherai edges 2$ abut one another and are weicied together.

Other embodiments oi the invention mm shown) may include first and seconr.i ccoenng avers which define a pIureiity 0$ shorter. etongate oeripherai edges which are Hterposert by one or more orrhouts tar items of door hardware such as i'snqes sr':d iocics.

Corresponmng etongale perinherai edges from the: first and second covering iavers may no be joined to one another by' weiding. as above..

in either of the foregoing cases the peripheral edges may be oined to one enoiher in a different manner, such as by an adhesive or a sei member.

as pt5 emb dirnertts of the invenfion (not shown) }T5n/ also rtciudea StriP member nterposed he'ween corresponding peripheral edges 28 at the first end sec.o.nri covering ayers The strLp oiember may he an into nesoen stnp to provtde the drwm wIth aridhionel fre reencon o. The strip member may also be aweather, smoKe or rustc: seal to mpoe the effectiveness with which the doom is able, resoectively,. to nhibu hra tranttmissmon Ot weatner, smoke. O' flO5&.

in each ci the ustanoes mentioned above, joining of corresoonmng per phemal edges $8 or interposing a stnp member berween corresponthng pen eral eos $8 m be 0O$ so to effect a fiuc:4aht seal between the periphemal edges.

mc) A door seconding to a second embodiment of the invention w desiormatec ermeratiy by the reference numeral 150.

The second door 50 shares many features wIth the fmrst door 10 and these common edthres share the same reference numerals.

The second door 50 mnoiudes a first covering layered which ties over the first face 1$. the side edges I 8 end eaoh of the first and second end edges 20. 22 of the door core 12.

The second door 50 further uoludes a second covering layer $6 whmch hes over the no second face: 16. the side edges i$ and each ol the fmrst end second end soles.20, 22 c'f uc'cn A4 L& Each of the first and second covennq iayers 24, 26 lies over the first end second end edges 20. 22 to the same extent.

The unbroken penpnerai e:dqes 2$ od the first and second covering layers 2$, $6 abut one another to completely encase the door core 1$. Welding of the oenpnerst edges 28 to one another provides a fluid-tioht seal between the first and second covertng leers 2$, 2$.

In use a respective covering layer 24. 20 protects the interface between the first and second faces 14. 10. and the side and end edges 18, 20, 22. of the doca' core 1$ from impact damage in edditmon, the: continuous nature of the respective covering layom 24. 215 in the atdrementoned interface regions ninimises the nsk of an impact dislodging either covering layer 24. 20 Irorn the doov core 12.