CA2257455A1 - Bitumen felt - Google Patents
Bitumen felt Download PDFInfo
- Publication number
- CA2257455A1 CA2257455A1 CA002257455A CA2257455A CA2257455A1 CA 2257455 A1 CA2257455 A1 CA 2257455A1 CA 002257455 A CA002257455 A CA 002257455A CA 2257455 A CA2257455 A CA 2257455A CA 2257455 A1 CA2257455 A1 CA 2257455A1
- Authority
- CA
- Canada
- Prior art keywords
- layer
- bitumen
- sheeting
- strip
- width
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B11/00—Layered products comprising a layer of bituminous or tarry substances
- B32B11/04—Layered products comprising a layer of bituminous or tarry substances comprising such bituminous or tarry substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/06—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
- B32B38/105—Removing layers, or parts of layers, mechanically or chemically on edges
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N5/00—Roofing materials comprising a fibrous web coated with bitumen or another polymer, e.g. pitch
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D5/00—Roof covering by making use of flexible material, e.g. supplied in roll form
- E04D5/10—Roof covering by making use of flexible material, e.g. supplied in roll form by making use of compounded or laminated materials, e.g. metal foils or plastic films coated with bitumen
Abstract
The invention concerns bitumen felt composed of several bitumen layers comprising a support layer (1) and at least two bitumen layers (2, 3.1) applied one on top of the other to a first side of the support layer. On the second side of the support layer (1), a strip (3.2) of a bitumen layer is applied along the longitudinal edge of the felt, the width (b) of the strip being smaller than the width (B) of the felt. The strip is made of the same bitumen material as the outer bitumen layer (3.1) on the first side of the support layer (1). Another bitumen layer (4) which is adjacent to the bitumen strip (3.2) applied along the longitudinal edge is applied to the second side of the support layer (1). This additional layer is composed of a different bitumen material to the bitumen strip (3.2) and extends from the strip to the other longitudinal edge of the felt. This design enables the overlap areas to be particularly well sealed when laying the bitumen felts.
Description
NOV. Z4. 1998 11: 49RM SKS&B . ~10. 3Z9 P. Z/14 F ~ L ~ r o ~
BIT~N SHEETING
The presen~ in~en~ion concerns a sheeting compos~d of several layers, specifically a ~upporting layer and at least two layers of ~itumen applie~ one on top of another to one ~ide. Such sheeting are in the~selves k~ow~ and are described in German 2 735 823 Al for example. A ~ethod of manufacturing su~h a sheeti~
is known from ~erman 3 413 ~4 C2.
Standard bitumen sheeting comprises a support imp~egnated with bitufflen or poly~e~-modified bitumen and with outer layers ~n each side. The oute~ l~ye~s can be c~umb-filled oxidized ~itumen, bltumen modified with thermoplastic polymers (SBS~ or bitumen modi~ied with thermoplastics ~AP~). Bitumen sheeting must es~entially satisfy two basic d~m~n~. The sheeti~g must provide long-la~ting tightness d~e to the outer layers, usually on each side o~ the support. ~his ~m~n~ is satisfied by using ~igh-quality polymer-modified layers. The effectiveness of the bond at the o~erl~ps $s also very important. Elasticity and low-temperature ~lexibilit~ are significant properties of SBS-modified layers, and are usually present in a ~heeting with laye~s on each side They are not, however, always the best indicators of ~ood hot o~ cold overlzp bonding. Another draw~ack of SBS-modifled layers is that they co~sume a ~ot of power to soften them f~r hot laying. T~ e~sure satisfactory bonding, the NO~.Z4.1998 11:49R~ SKS&B NO.3Z9 P.3~14 CA 02257455 l998-l2-07 outex l~yers ~u~t be heated so hot that the~ can damage ~he suppor~ing l~yer.
One known approach to ~limi~ating this draw~ack is to a~ply another layer of bitumen to the bottom o~ the ~heeting as des~ribed for example in Ger~an 3 413 264 C2 The ~isco3ity o~
the ex~ra Layer must be at leask ~000 m~Z~sec lower during the manufacturi~g p~ocess than th~t o~ the layer dire~tly below the supporting layer. One ad~ntage o~ ~his approa~ is that, since the hot bonding will ~equire less heat, the 3upporti~g layer will ~e exposed to les~ da~age. The extra laye~ must ~e just thi~k enough to pro~ide enough bi~umen ~or bon~ing but ~o more, to keep ¢osts lo~ Experien~e ~mo~.~trates that ~he extra layer ~u~t be a~ least O.8 m~ to ensure satis~actory ~onding.
A succession o~ two layer.~ of bitu~en ~an aLso be app~ied ~o each side o~ the supporting layer ~n the known bLtumen sheeting.
It is ~lso possikle to apply two layers to one si~e and one laye~
to the other.
Such bitumen sheets are laid next to ea~h other with a strip of prescribed width overla~ping ~t each adja~ent edge. The overlaps a~e t~en bond~d together hot or co~d~ One drawba~k here is ~at the re~dlly hot-~ondin~ lower layer is often not optimall~ ~onded to the poorly hot-bonding upper layer, leading NO~.Z4. i998 11:50RM SKS&B NO.3Z9 P.4~14 CA 02257455 l998-l2-07 to defe~ts i~ the ~oint The p~ohlem was veri~ied b~ peali~g the layers apar~
~ he ohje~t o~ the present invention is ~ccordin~Ly an bitumen sheeting o~ the a~ores~ld type th~t ~ill ensure long-term pro~ç~ion ac~ompanied by i~eal ~on~ing a~ the ovexlaps~
This object is at~ai~ed in the ~eneri~ sheeting in accordance wi~h the pre~ent in~enti~n as recited ~ the ~o~y of ~laim 1. Advantageous a~a~ced em~diments of the sheeting in accordance ~i~h the present inven~io~ are re~ted in ~he subsidiary ~laims. Claim 6 concerns a met~od o~ l~y~ng ~n bitumen sheeti~s in acco~da~ce with the presen~ invention.
The st~ip~ that ove~l~p when a sheeting o~ bi~umen in accordan~e with the present i~vention i~ lai~ will all be o~ the same mate~ial. Iden~ical laye~ing m~sses will accord~ngly ~e bo~ded to~ethe~ when the seams are ~oined in ~he overla~pi~g areas The re~ult will ~e optimal adhesio~ ln the vicinit~ o~ the ~e~m. That equally r~dily ~onding layers will be ~onded together n that vicinity will ensure a particula~ly tight seal.
~ he ~esired quality o~ such layers of bit~men can be attained by adding hi~h-quality :cesins. The viscosity o;~ a l~Lyer o~ SBS-modi~ied bitl~men car~ be consicleral~ly decreased and its I'IO~ . 24 . 1998 11: 50fll'1 SK58tB NO. 3Z9 P. 5/14 CA 02257455 l998-l2-07 sof~ening point lower~d by a~ least 10~K simult~neously.
The t~o layers of ~itwmen on each side o~ the overlap will melt simultaneously a~d with less energy ConsUmp~Lo~ pr~viding an op~imal bond~ An ~itu~en ~heetin~ in accord~nce with the Rresent inVen'CLon will be particularly useful when o~ly one laye~
is to ~e lai~ ~ecause the thickne~s of the seam will be e~en more si~ni~ic~nt.
~ he s~rip bordering the longit~ldl n~l edge w~ e e~;sentially as wide as the o~terlap ~ n one ~van~ag~ous embo~iment o~ the pres~nt in~ention, ~t lea$t o~e layer of bi~umen is applied to the other side o~ the supporting layer, with ~he strip applied to its outer su~ace and along t~e longit~ l edge of ~e shee~in~. The areas out~ide the strip on the outside o~ the outer~os~ layer of bi~umen on the othe~ sLde O:e the supporting layer can }~e p~otectecl by a protecti~e layer. The protective layer can be a con~ention~l scat~e~ing o~ stone chips, granules etc ~ sheet o~ metal o~
pl~stic, or a fabri~ pad O~e exa~ple of a~ bit~men shee~ing in accordance with the present invention will now be spe~i~ied with re~erence to ~he accomp~nying ~awing, wherein NO~.24.1998 11:50R~1 SKS&B NO.3Z9 P.6/14 CA 02257455 l998-l2-07 Figu~es 1~ and 1~ are highly schem~ti~ large~-~cale ~e~tio~s through two embodiment~ of ~ sheeting in the vicinit~ of their longitu~.tn~l edge an~
Figure ~ is a highly sche~a~i¢ but not as large-scale lo~gitl~; n~ I side view o~ three ~heets like those illustrated in Figure lA lai~ overlapping The sheeting illustr~ted in Figure lA in~ludes a supporting la~ex 1. Applled to its bottom, in terms o~ the ~igu~e bu~ also constituting the boktom ~hen the sheeting ls laid, is an inner l~yer 2 o~ ~itume~ Also applied to the bottom is a~ ~ute~ layer 3.1 of bitumen ~pplied along the longi~udinal edge o~ the top of the sheetin~ is a strip 3.2 o~ ~itumen. ~t's width ~ is narrow in ~elation to the total lenqt~ B of t~e ~heeting. Strip 3.2 is o~
the same materi~l as the o~t~r layer 3.1 o~ bitumen on th~ botto~
o~ ~he sheeting. A~acent to s~rip 3.2 on the ~op of supporting layer 1 i5 ano~her l~e~ 4 of hitumen tha~ extends f~om whe~e it ad~oins st~ip 3 2 to the other and unillustrated longitudi~al edge o~ the sheeting. hayer 4 is of a di~erent ~itum~n ~han outer laye~ 3.1 and strip ~.2 Lay~rs 2 and 4 ~an be of the sam~
or of differen~ m~terials. I~ t~ey are of ~i~fer2n~ materials, layers 2 and 3.1 can be of the sa~e ma~erial. The out~ides o~
outer laye~ 3.1 a~d ~trip 3.2 are conventionally provt.ded wit~ a layer ~.1 and 6.2 of separ~tor, ~alc, s~nd, or she~, NOV . Z4 . 1998 11: 50R~1 SKS&B NO . 3Z9 P. 7~14 CA 02257455 l998-l2-07 corlv~n~ion~ll y removed as the sheeting iS laid.
Ou~side strip 3 :~, the top o~ the la~er 4 appliec~ dlrectly to supporting layer 1 is pr~vic3ed ~rith a sça~tering 5.
lt has also l:~een pro~en practic~l for layers 2, 3 1, a~d 3.2 to }:~e o:E APP-modi~ied bi~umen ~nd for layer 4 to he o~ SBS-modi~ied bitumen APP~modi:l~ied bitumen is conslderably less vis~oUs as it melts than ~BS-modified bitumen, even though its so f tening po illt i s hi g~er .
Figure 11~ illustr~tes anothe~ embodiment o;E an bitumen sheeting, which ~ e~s ~o~ the em~odiment illustrate~ in ~igure lA only in the po~itio~ of the strip Other~lse ~he sheeti~g is struc~urally identi~al to the sheeting in Fi.gure lA, and the sa~e re~erence n~bers ar~ e~ployed ~ith an added apostrophe for the equivalent layers.
An ex~ra l~yer 4' ~ ~itumen has ~een applied at the top in Figure 1~ to the upper sur~ace of supporting layer 1' and ex~en~s over the total width o~ t~e sheetlng. ~pplied to the top o~ layer 4' ~lo~g the longitudinal ed~e of the sheeti~g is a strip 3.2' of bitum~ o~ width b and o~ the same ~aterial ~s the outermost layer 3.1' on the ~ottom o~ the sheeting.
NOV.Z4. 1998 11: 50R~'1 SKS&B . NO. 3Z9 P.8~14 CA 02257455 l998-l2-07 .
Vario~s examples of how ~n bitumen sheeti~g of the type illu.~trated in Figu~es lA and lB will now be provided, the individual laye~s ~einq identi~ied by their reference num~ers.
~mrle 1 Upper su~faci~g in ~he ~olm o~ a po~ymer-modi~ied ~itu~en impermeable ~Fig 1~.
~ ayer 1: Suppor~i~g layer of 2S0 g poly~er felt imp~egnated wit~ S~S-modified bi~umen.
~ ayer 2: Botl~om l~yex of SB$-~nodi~ied bi~umen.
~ ayer 3 1: ~xtra ~otto~ polymer l~yer like layer 2 with no ~illers b~t wi~h an added 5 ~ resin.
Layer 3.2 : Layer, of the same material as layer 3 1, on overlap s~rip.
La~er 4: Top layer like layer 3, but with 0.5 ~ ~o~e S3S-modi f ied bi ~en Layer 5: Sc:~ttered slate chips Layer ~.1 Sheet of PE la~nated ~o bottom L~er 6. 2: Strips of PE laminated to bottom Exz~ple 2 Polymer-modi~ied bitumen as an interffle~iate ~ig. 1~) Layer 1: Glass-fel~ or glas~-~trix co~posite s~ppor~
layer i~pregnated with S~S-modi~i~d ~i~umen.
Layer 2; Botto~ lay~r of SBS-modi~ie~ bitumen.
NOV . Z4. 1998 11: 51R11 SKS&B NO. 3Z9 P. 9~14 CA 02257455 l998-l2-07 Layer 3 1: Additional bo~tom layer like layer 2 without filLers ~nd ~ith 5 % r~in added.
Layer 3.2: Layer o~er overlap strip of th~ sa~e material as layer 3.1.
Layer 4. Top laye~ lik~ layer 2.
Lay~r 5: Thin PP-~elt la~lnation.
Layer 6.1: PE she~t lamina~ed to ~ottom Layer 6.2: T ~i n~ted strips of PP.
Cu~renk effo~ts to develop bitume~ ~heets for appli~tions ln the imp~rmeables ~ield a~ i~creasingly concen~rated on cold honding. Sheets o~ the aforesaid ge~era ~an ~e employed in this are~ as w~ll Rellable adhesion on the part of the seams in the vi~inity of ~he overlap and hence their permanent ti~h~n~s~ is en.~ured b~ the use of adjacent layers ~ the s~e propertles.
Cold-adheslve ~aye~s can be thinn~r. Extra layer 3 1 can now usu~ he O 5 mm thick. Layer 3.2 can have th~ same t~ickness and c~n ~e ~pplie~ in the form of a strip of width b to the now ~ntinuous layer 4.
E~a~ple 3 Polymer-modified ~itumen impermea~le as an interme~iate ~ig. lB) Layer 1': Glass-~elt or glass-matrix ~mpo~ite su~po~ting l~yer impregnateq with SBS-mo~ified ~ltumen.
NO'1f . Z4 . 1998 11: 51RM SKS&B . NO . 3Z9 P . 10~14 CA 02257455 l998-l2-07 Layer 2': Botto~ layer o~ SBS-mo~ified bitumen Layer 3.1 r: Extra ~attOffl ~old-adhe~ive layer o~ polymer-modifie~ bitu~e~ with 10 ~ of a blend o~ various ~esins.
Layer 3.~': Laye~ over overlap strip of the s~me material as layer 3.~' Layer 4': Top layer like layer 2'.
L~yer ~': Thin PP-~elt l~ination Layer 6.1~; Bottom l~ina~ion o~ sili~onlzed PE, to be peeled off when the sheeting is laid.
Layer 6 2'; 1amin~ed strip of sili~oni~ed PE, to be peeled o~f wherl the sheeti~g i-~ laid Example 4 Upper sur~ in the form o~ a polymer-modi~ied bitumen impermea~le ~Fig. ~B~
Layer 1' 5uppor~ing layer of ~SO-g PE-fel~ impregna~e~ with SBS-modi~ie~ bitumen I.ayer 2' Bottom layer o~ APP--modified bit~men Layer 3~1'. Additional ~cttom layer like layer 2' Layer 3.2': L~yer over overLap strip like layer 3.1'.
L~yer 4': To~ layer o~ S~S-modifie~ bitumen Layer 5': Scattered slate chips Layer 6.1': P~ ~heet lamina~ed ~o hottom.
La~er ~ 2' T.~mi~ted s~rip~ of PP.
NOV.Z4.1998 11-51RI'1 SKS&B . NO.329 P.ll~l~
CA 02257455 l998-l2-07 Adj acent }:~ltumen sheets are }~osi~ioned when la;Ld with the lower sur:Eace, bikumen laye~ ~.1, of the sheeting to the right in the drawing, o~e~lappi~g the top of the shee~ing to width }~ i~or example, outer l~yer 3.1 accor~in~ly resti~g directly on strip 3 ~ 2 ~ Two sheets will acco:rdingly l~e homogeneously bonded together that area.
This app~oach to layi~g the sheets is ~epre~ente~ highly sche~Ltically in Figur0 2 . For simplicit~' s sake the displac~ent thell~ OCCULS in the vicinity of the overlap is ~epresentecl ~ 904, although in reality i~ slopes, o~ course.
Three laid sheets ~1, D2, ~d ~3 are illustrated. T~ey overlap one another at their adj ~cent edges as hereiDbefore specified su~h that, ~s indicated a~ the txan3ition between D1 and D2, s~me o~ the strip 3.~ on the bottom o~ a ~he~ti~ will rest against the strip 3.1 on ~h2tever sh~eting i9 below it, allowlng the hot bon~ing to oc~ur at that site. The top of the 3heeting is provided wi~h ~cattering 5 ~s hereinbe~ore speci~ied NOV.24.1998 11:51RM SKS&B CA 02257455 l998-l2-07 NO.329 P.14/14 ProvisionaL international office action The do~uments cited in the sear~h ~eport in no way suggest modifytng ~n bitumen sheeting of the type recited in ~laim 1 to adapt 1~ to the task cited on page 4 of the description.
These documents contain ln particula~ no suggestion th~t the strip applied to the other side of the supporting layer should be of the s~me bitumen as the outermost layer on ~he first side of the ~upportlng layer.
BIT~N SHEETING
The presen~ in~en~ion concerns a sheeting compos~d of several layers, specifically a ~upporting layer and at least two layers of ~itumen applie~ one on top of another to one ~ide. Such sheeting are in the~selves k~ow~ and are described in German 2 735 823 Al for example. A ~ethod of manufacturing su~h a sheeti~
is known from ~erman 3 413 ~4 C2.
Standard bitumen sheeting comprises a support imp~egnated with bitufflen or poly~e~-modified bitumen and with outer layers ~n each side. The oute~ l~ye~s can be c~umb-filled oxidized ~itumen, bltumen modified with thermoplastic polymers (SBS~ or bitumen modi~ied with thermoplastics ~AP~). Bitumen sheeting must es~entially satisfy two basic d~m~n~. The sheeti~g must provide long-la~ting tightness d~e to the outer layers, usually on each side o~ the support. ~his ~m~n~ is satisfied by using ~igh-quality polymer-modified layers. The effectiveness of the bond at the o~erl~ps $s also very important. Elasticity and low-temperature ~lexibilit~ are significant properties of SBS-modified layers, and are usually present in a ~heeting with laye~s on each side They are not, however, always the best indicators of ~ood hot o~ cold overlzp bonding. Another draw~ack of SBS-modifled layers is that they co~sume a ~ot of power to soften them f~r hot laying. T~ e~sure satisfactory bonding, the NO~.Z4.1998 11:49R~ SKS&B NO.3Z9 P.3~14 CA 02257455 l998-l2-07 outex l~yers ~u~t be heated so hot that the~ can damage ~he suppor~ing l~yer.
One known approach to ~limi~ating this draw~ack is to a~ply another layer of bitumen to the bottom o~ the ~heeting as des~ribed for example in Ger~an 3 413 264 C2 The ~isco3ity o~
the ex~ra Layer must be at leask ~000 m~Z~sec lower during the manufacturi~g p~ocess than th~t o~ the layer dire~tly below the supporting layer. One ad~ntage o~ ~his approa~ is that, since the hot bonding will ~equire less heat, the 3upporti~g layer will ~e exposed to les~ da~age. The extra laye~ must ~e just thi~k enough to pro~ide enough bi~umen ~or bon~ing but ~o more, to keep ¢osts lo~ Experien~e ~mo~.~trates that ~he extra layer ~u~t be a~ least O.8 m~ to ensure satis~actory ~onding.
A succession o~ two layer.~ of bitu~en ~an aLso be app~ied ~o each side o~ the supporting layer ~n the known bLtumen sheeting.
It is ~lso possikle to apply two layers to one si~e and one laye~
to the other.
Such bitumen sheets are laid next to ea~h other with a strip of prescribed width overla~ping ~t each adja~ent edge. The overlaps a~e t~en bond~d together hot or co~d~ One drawba~k here is ~at the re~dlly hot-~ondin~ lower layer is often not optimall~ ~onded to the poorly hot-bonding upper layer, leading NO~.Z4. i998 11:50RM SKS&B NO.3Z9 P.4~14 CA 02257455 l998-l2-07 to defe~ts i~ the ~oint The p~ohlem was veri~ied b~ peali~g the layers apar~
~ he ohje~t o~ the present invention is ~ccordin~Ly an bitumen sheeting o~ the a~ores~ld type th~t ~ill ensure long-term pro~ç~ion ac~ompanied by i~eal ~on~ing a~ the ovexlaps~
This object is at~ai~ed in the ~eneri~ sheeting in accordance wi~h the pre~ent in~enti~n as recited ~ the ~o~y of ~laim 1. Advantageous a~a~ced em~diments of the sheeting in accordance ~i~h the present inven~io~ are re~ted in ~he subsidiary ~laims. Claim 6 concerns a met~od o~ l~y~ng ~n bitumen sheeti~s in acco~da~ce with the presen~ invention.
The st~ip~ that ove~l~p when a sheeting o~ bi~umen in accordan~e with the present i~vention i~ lai~ will all be o~ the same mate~ial. Iden~ical laye~ing m~sses will accord~ngly ~e bo~ded to~ethe~ when the seams are ~oined in ~he overla~pi~g areas The re~ult will ~e optimal adhesio~ ln the vicinit~ o~ the ~e~m. That equally r~dily ~onding layers will be ~onded together n that vicinity will ensure a particula~ly tight seal.
~ he ~esired quality o~ such layers of bit~men can be attained by adding hi~h-quality :cesins. The viscosity o;~ a l~Lyer o~ SBS-modi~ied bitl~men car~ be consicleral~ly decreased and its I'IO~ . 24 . 1998 11: 50fll'1 SK58tB NO. 3Z9 P. 5/14 CA 02257455 l998-l2-07 sof~ening point lower~d by a~ least 10~K simult~neously.
The t~o layers of ~itwmen on each side o~ the overlap will melt simultaneously a~d with less energy ConsUmp~Lo~ pr~viding an op~imal bond~ An ~itu~en ~heetin~ in accord~nce with the Rresent inVen'CLon will be particularly useful when o~ly one laye~
is to ~e lai~ ~ecause the thickne~s of the seam will be e~en more si~ni~ic~nt.
~ he s~rip bordering the longit~ldl n~l edge w~ e e~;sentially as wide as the o~terlap ~ n one ~van~ag~ous embo~iment o~ the pres~nt in~ention, ~t lea$t o~e layer of bi~umen is applied to the other side o~ the supporting layer, with ~he strip applied to its outer su~ace and along t~e longit~ l edge of ~e shee~in~. The areas out~ide the strip on the outside o~ the outer~os~ layer of bi~umen on the othe~ sLde O:e the supporting layer can }~e p~otectecl by a protecti~e layer. The protective layer can be a con~ention~l scat~e~ing o~ stone chips, granules etc ~ sheet o~ metal o~
pl~stic, or a fabri~ pad O~e exa~ple of a~ bit~men shee~ing in accordance with the present invention will now be spe~i~ied with re~erence to ~he accomp~nying ~awing, wherein NO~.24.1998 11:50R~1 SKS&B NO.3Z9 P.6/14 CA 02257455 l998-l2-07 Figu~es 1~ and 1~ are highly schem~ti~ large~-~cale ~e~tio~s through two embodiment~ of ~ sheeting in the vicinit~ of their longitu~.tn~l edge an~
Figure ~ is a highly sche~a~i¢ but not as large-scale lo~gitl~; n~ I side view o~ three ~heets like those illustrated in Figure lA lai~ overlapping The sheeting illustr~ted in Figure lA in~ludes a supporting la~ex 1. Applled to its bottom, in terms o~ the ~igu~e bu~ also constituting the boktom ~hen the sheeting ls laid, is an inner l~yer 2 o~ ~itume~ Also applied to the bottom is a~ ~ute~ layer 3.1 of bitumen ~pplied along the longi~udinal edge o~ the top of the sheetin~ is a strip 3.2 o~ ~itumen. ~t's width ~ is narrow in ~elation to the total lenqt~ B of t~e ~heeting. Strip 3.2 is o~
the same materi~l as the o~t~r layer 3.1 o~ bitumen on th~ botto~
o~ ~he sheeting. A~acent to s~rip 3.2 on the ~op of supporting layer 1 i5 ano~her l~e~ 4 of hitumen tha~ extends f~om whe~e it ad~oins st~ip 3 2 to the other and unillustrated longitudi~al edge o~ the sheeting. hayer 4 is of a di~erent ~itum~n ~han outer laye~ 3.1 and strip ~.2 Lay~rs 2 and 4 ~an be of the sam~
or of differen~ m~terials. I~ t~ey are of ~i~fer2n~ materials, layers 2 and 3.1 can be of the sa~e ma~erial. The out~ides o~
outer laye~ 3.1 a~d ~trip 3.2 are conventionally provt.ded wit~ a layer ~.1 and 6.2 of separ~tor, ~alc, s~nd, or she~, NOV . Z4 . 1998 11: 50R~1 SKS&B NO . 3Z9 P. 7~14 CA 02257455 l998-l2-07 corlv~n~ion~ll y removed as the sheeting iS laid.
Ou~side strip 3 :~, the top o~ the la~er 4 appliec~ dlrectly to supporting layer 1 is pr~vic3ed ~rith a sça~tering 5.
lt has also l:~een pro~en practic~l for layers 2, 3 1, a~d 3.2 to }:~e o:E APP-modi~ied bi~umen ~nd for layer 4 to he o~ SBS-modi~ied bitumen APP~modi:l~ied bitumen is conslderably less vis~oUs as it melts than ~BS-modified bitumen, even though its so f tening po illt i s hi g~er .
Figure 11~ illustr~tes anothe~ embodiment o;E an bitumen sheeting, which ~ e~s ~o~ the em~odiment illustrate~ in ~igure lA only in the po~itio~ of the strip Other~lse ~he sheeti~g is struc~urally identi~al to the sheeting in Fi.gure lA, and the sa~e re~erence n~bers ar~ e~ployed ~ith an added apostrophe for the equivalent layers.
An ex~ra l~yer 4' ~ ~itumen has ~een applied at the top in Figure 1~ to the upper sur~ace of supporting layer 1' and ex~en~s over the total width o~ t~e sheetlng. ~pplied to the top o~ layer 4' ~lo~g the longitudinal ed~e of the sheeti~g is a strip 3.2' of bitum~ o~ width b and o~ the same ~aterial ~s the outermost layer 3.1' on the ~ottom o~ the sheeting.
NOV.Z4. 1998 11: 50R~'1 SKS&B . NO. 3Z9 P.8~14 CA 02257455 l998-l2-07 .
Vario~s examples of how ~n bitumen sheeti~g of the type illu.~trated in Figu~es lA and lB will now be provided, the individual laye~s ~einq identi~ied by their reference num~ers.
~mrle 1 Upper su~faci~g in ~he ~olm o~ a po~ymer-modi~ied ~itu~en impermeable ~Fig 1~.
~ ayer 1: Suppor~i~g layer of 2S0 g poly~er felt imp~egnated wit~ S~S-modified bi~umen.
~ ayer 2: Botl~om l~yex of SB$-~nodi~ied bi~umen.
~ ayer 3 1: ~xtra ~otto~ polymer l~yer like layer 2 with no ~illers b~t wi~h an added 5 ~ resin.
Layer 3.2 : Layer, of the same material as layer 3 1, on overlap s~rip.
La~er 4: Top layer like layer 3, but with 0.5 ~ ~o~e S3S-modi f ied bi ~en Layer 5: Sc:~ttered slate chips Layer ~.1 Sheet of PE la~nated ~o bottom L~er 6. 2: Strips of PE laminated to bottom Exz~ple 2 Polymer-modi~ied bitumen as an interffle~iate ~ig. 1~) Layer 1: Glass-fel~ or glas~-~trix co~posite s~ppor~
layer i~pregnated with S~S-modi~i~d ~i~umen.
Layer 2; Botto~ lay~r of SBS-modi~ie~ bitumen.
NOV . Z4. 1998 11: 51R11 SKS&B NO. 3Z9 P. 9~14 CA 02257455 l998-l2-07 Layer 3 1: Additional bo~tom layer like layer 2 without filLers ~nd ~ith 5 % r~in added.
Layer 3.2: Layer o~er overlap strip of th~ sa~e material as layer 3.1.
Layer 4. Top laye~ lik~ layer 2.
Lay~r 5: Thin PP-~elt la~lnation.
Layer 6.1: PE she~t lamina~ed to ~ottom Layer 6.2: T ~i n~ted strips of PP.
Cu~renk effo~ts to develop bitume~ ~heets for appli~tions ln the imp~rmeables ~ield a~ i~creasingly concen~rated on cold honding. Sheets o~ the aforesaid ge~era ~an ~e employed in this are~ as w~ll Rellable adhesion on the part of the seams in the vi~inity of ~he overlap and hence their permanent ti~h~n~s~ is en.~ured b~ the use of adjacent layers ~ the s~e propertles.
Cold-adheslve ~aye~s can be thinn~r. Extra layer 3 1 can now usu~ he O 5 mm thick. Layer 3.2 can have th~ same t~ickness and c~n ~e ~pplie~ in the form of a strip of width b to the now ~ntinuous layer 4.
E~a~ple 3 Polymer-modified ~itumen impermea~le as an interme~iate ~ig. lB) Layer 1': Glass-~elt or glass-matrix ~mpo~ite su~po~ting l~yer impregnateq with SBS-mo~ified ~ltumen.
NO'1f . Z4 . 1998 11: 51RM SKS&B . NO . 3Z9 P . 10~14 CA 02257455 l998-l2-07 Layer 2': Botto~ layer o~ SBS-mo~ified bitumen Layer 3.1 r: Extra ~attOffl ~old-adhe~ive layer o~ polymer-modifie~ bitu~e~ with 10 ~ of a blend o~ various ~esins.
Layer 3.~': Laye~ over overlap strip of the s~me material as layer 3.~' Layer 4': Top layer like layer 2'.
L~yer ~': Thin PP-~elt l~ination Layer 6.1~; Bottom l~ina~ion o~ sili~onlzed PE, to be peeled off when the sheeting is laid.
Layer 6 2'; 1amin~ed strip of sili~oni~ed PE, to be peeled o~f wherl the sheeti~g i-~ laid Example 4 Upper sur~ in the form o~ a polymer-modi~ied bitumen impermea~le ~Fig. ~B~
Layer 1' 5uppor~ing layer of ~SO-g PE-fel~ impregna~e~ with SBS-modi~ie~ bitumen I.ayer 2' Bottom layer o~ APP--modified bit~men Layer 3~1'. Additional ~cttom layer like layer 2' Layer 3.2': L~yer over overLap strip like layer 3.1'.
L~yer 4': To~ layer o~ S~S-modifie~ bitumen Layer 5': Scattered slate chips Layer 6.1': P~ ~heet lamina~ed ~o hottom.
La~er ~ 2' T.~mi~ted s~rip~ of PP.
NOV.Z4.1998 11-51RI'1 SKS&B . NO.329 P.ll~l~
CA 02257455 l998-l2-07 Adj acent }:~ltumen sheets are }~osi~ioned when la;Ld with the lower sur:Eace, bikumen laye~ ~.1, of the sheeting to the right in the drawing, o~e~lappi~g the top of the shee~ing to width }~ i~or example, outer l~yer 3.1 accor~in~ly resti~g directly on strip 3 ~ 2 ~ Two sheets will acco:rdingly l~e homogeneously bonded together that area.
This app~oach to layi~g the sheets is ~epre~ente~ highly sche~Ltically in Figur0 2 . For simplicit~' s sake the displac~ent thell~ OCCULS in the vicinity of the overlap is ~epresentecl ~ 904, although in reality i~ slopes, o~ course.
Three laid sheets ~1, D2, ~d ~3 are illustrated. T~ey overlap one another at their adj ~cent edges as hereiDbefore specified su~h that, ~s indicated a~ the txan3ition between D1 and D2, s~me o~ the strip 3.~ on the bottom o~ a ~he~ti~ will rest against the strip 3.1 on ~h2tever sh~eting i9 below it, allowlng the hot bon~ing to oc~ur at that site. The top of the 3heeting is provided wi~h ~cattering 5 ~s hereinbe~ore speci~ied NOV.24.1998 11:51RM SKS&B CA 02257455 l998-l2-07 NO.329 P.14/14 ProvisionaL international office action The do~uments cited in the sear~h ~eport in no way suggest modifytng ~n bitumen sheeting of the type recited in ~laim 1 to adapt 1~ to the task cited on page 4 of the description.
These documents contain ln particula~ no suggestion th~t the strip applied to the other side of the supporting layer should be of the s~me bitumen as the outermost layer on ~he first side of the ~upportlng layer.
Claims (6)
1. Sheeting composed of several layers, specifically a supporting layer and at least two layers of bitumen applied one on top of another to one side, characterized by a strip (3.2) of bitumen applied to the other side along one longitudinal edge of the sheeting, the strip having a width b that is short in comparison to the width B of the sheeting and being of the Same bitumen material as the outermost layer 3.1 on the first side of the supporting layer (1).
2. Sheeting as in Claim 1, characterized by at least one layer (4) of bitumen on the other side of the supporting layer (1), adjacent to the strip (3.2) that extends along the longitudinal edge, of a different material and extending from that point to the other longitudinal edge of the sheeting.
3. Sheeting as in Claim 1, characterized by at least one layer of bitumen of the other side of the supporting layer, whereby the strip is applied to its outer surface along the longitudinal edge of the sheeting.
4. Sheeting as in claim 2 or 3, characterized in that the areas outside the strip on the outside of the outermost layer (4) of bitumen on the other side of the supporting layer (1) are protected by a protective layer.
11 Sheeting as in one of Claims 1 through 4, characterized in that the outsides of the outer layer (3.1) and the strip (3.2) are provided with a layer (6.1 & 6.2) of separator.
6. Method of laying bitumen sheeting like those recited in Claims 1 through 5, characterized in that the sheeting is positioned with the other side of each constituting the upper side, in that the adjacent second sheeting (D2) is laid against the longitudinal edge of the first sheeting (D1) that the strip (3.2) of bitumen with a width b is less than the width B of sheeting is aligned along, such that the second overlaps the top of the first sheeting (D2) in the vicinity of the width b of the strip (3.2) of bitumen such that the lowermost layer (3.1) of the second sheeting (D2) rests directly against the strip (3.2) and the first and second sheeting (D1 & D2) are hot bonded or cold bonded to each other in the vicinity of the overlap.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29613310U DE29613310U1 (en) | 1996-08-01 | 1996-08-01 | Bitumen membrane |
| DE29613310.8 | 1996-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2257455A1 true CA2257455A1 (en) | 1998-02-12 |
Family
ID=8027271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002257455A Abandoned CA2257455A1 (en) | 1996-08-01 | 1997-07-23 | Bitumen felt |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0915755B1 (en) |
| AT (1) | ATE207008T1 (en) |
| CA (1) | CA2257455A1 (en) |
| CZ (1) | CZ294868B6 (en) |
| DE (2) | DE29613310U1 (en) |
| DK (1) | DK0915755T3 (en) |
| NO (1) | NO315461B1 (en) |
| PL (1) | PL331380A1 (en) |
| WO (1) | WO1998005495A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6740356B2 (en) * | 2000-10-25 | 2004-05-25 | Soprema (Societe Anonyme) | Process for the production of a bituminous sealing sheet |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29911125U1 (en) * | 1999-06-25 | 1999-12-30 | Icopal Gmbh | Bituminous roofing membrane |
| DE19961693B4 (en) * | 1999-12-21 | 2006-07-13 | Stoll Gmbh | Installation method for a watertight covering and webs for the production of a waterproof covering |
| EP2526074A2 (en) | 2010-01-19 | 2012-11-28 | Basf Se | Method for producing hollow bodies having enclosed freely displaceable particles |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE795489A (en) * | 1972-02-19 | 1973-05-29 | Tajima Roofing Co | BITUMOUS LAMINATED MENBRANE FOR ROOFING AND METHODS FOR ITS PREPARATION AND APPLICATION |
| DE2735823A1 (en) * | 1977-08-09 | 1979-02-22 | Icopal Baustoffe Gmbh | Bituminous three- or four-ply laminate suitable for roofing - comprises load-bearing fabric or film core and bituminous outer plies one of which is plastics- or latex-modified |
| DE7907342U1 (en) * | 1979-03-16 | 1979-07-05 | Ruetgerswerke Ag, 6000 Frankfurt | BITUMEN ROOF |
| JPS6059184A (en) * | 1983-09-12 | 1985-04-05 | Tajima Le-Fuingu Kk | Asphalt-based laminated roofing sheet |
| DE3413264C2 (en) * | 1984-04-07 | 1994-04-21 | Icopal Siplast Gmbh | Process for producing a bitumen sheet with several bitumen layers |
| DE8713625U1 (en) * | 1987-10-10 | 1987-11-26 | Huke, Carl-Josef, 4432 Gronau, De | |
| DE9003168U1 (en) * | 1990-03-17 | 1991-07-18 | Dr. Kohl Gmbh & Cie, Dachbelag- Und Bautenschutzmittel-Fabrik, 4270 Dorsten, De | |
| DE9018119U1 (en) * | 1990-04-04 | 1995-10-26 | Kebulin Ges Kettler & Co Kg | Bituminous welding membrane for the storage purposes of buildings |
| DE19519675B4 (en) * | 1994-06-01 | 2006-04-13 | Kebulin-Gesellschaft Kettler Gmbh & Co. Kg | Multilayer polymer bitumen. Oberlagsbahn |
-
1996
- 1996-08-01 DE DE29613310U patent/DE29613310U1/en not_active Expired - Lifetime
-
1997
- 1997-07-23 AT AT97936563T patent/ATE207008T1/en not_active IP Right Cessation
- 1997-07-23 CZ CZ1999339A patent/CZ294868B6/en not_active IP Right Cessation
- 1997-07-23 DK DK97936563T patent/DK0915755T3/en active
- 1997-07-23 CA CA002257455A patent/CA2257455A1/en not_active Abandoned
- 1997-07-23 DE DE59704993T patent/DE59704993D1/en not_active Expired - Lifetime
- 1997-07-23 PL PL97331380A patent/PL331380A1/en unknown
- 1997-07-23 EP EP97936563A patent/EP0915755B1/en not_active Expired - Lifetime
- 1997-07-23 WO PCT/DE1997/001586 patent/WO1998005495A1/en active IP Right Grant
-
1999
- 1999-01-27 NO NO19990374A patent/NO315461B1/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6740356B2 (en) * | 2000-10-25 | 2004-05-25 | Soprema (Societe Anonyme) | Process for the production of a bituminous sealing sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| DE29613310U1 (en) | 1997-12-04 |
| EP0915755A1 (en) | 1999-05-19 |
| CZ33999A3 (en) | 1999-06-16 |
| DK0915755T3 (en) | 2002-01-28 |
| NO990374L (en) | 1999-01-27 |
| DE59704993D1 (en) | 2001-11-22 |
| EP0915755B1 (en) | 2001-10-17 |
| NO990374D0 (en) | 1999-01-27 |
| CZ294868B6 (en) | 2005-04-13 |
| NO315461B1 (en) | 2003-09-08 |
| ATE207008T1 (en) | 2001-11-15 |
| WO1998005495A1 (en) | 1998-02-12 |
| PL331380A1 (en) | 1999-07-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |