Note: Descriptions are shown in the official language in which they were submitted.
10 FEB ~94 09:02 I~IRUSER I~ERKE BRUEHL 211 5 ~ 6 ~
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LIDD13D DRU~I
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The invention relates to a lidded drum which has a body
made o ther~opla~tic material and may be alo~able by a drum
j lid and ten~ion ring in a gastight ~nd li~uid-tight manner for
.~
~toring and for tran~porting 601id~ or liquids. The invention
is further directed to a ne~ method for making thi~ lidded
. drum body.
.~
Lidded drum bodi~ are conventionally made by blow molding
in a particul~r gplit blow mold. ~urrent lidded drum~ hav~ a
. .. .
~as~ive, stable ~urface flange which i~ up~et at the upper
~, outer ri~ of the drum ~or r2aeiving the dru~ lid and a8 an
butment for the ten~ion ring engaging from unde~neath. ~e
~tabl~ ~urace flange i8 up8et directl~ fro~ the material ~f
the wall o~ .the drum ~od~ inside the blowinq mold after
wing a thermoplastic, tubular pari~on by me~n~ of an
annular mold ~ide. After molding the pr~for~ ~or the ~idded
~, drum, flagh (pinch-off) iB separated at the pinch-off areas of
the tub~lar parison at the top and bottom. On the ~ide o~ the
feed openin~ of the dru~ body, the pinch-~ff consist of a
cap~shaped ring part whi~h i~ arranged around ~ ~ow mandr~l
and has a greatest pos~i~le diameter in order to preven~ large
quantitie~i of fla~h. Thi~ cap piece i~ neatl~ ~evered in the
f~eam area of~ the up~et ~riurface flange.
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211~61
US-~-3 696 ~62 ~9 al~o par~ of the prior art, ,~nd descrl~es a
conical containQr th~t is ~anufactured by lnjection moulding ('H'i~
one aastlng~) and ha~ nap-on lld that is o~ ~oft plastlc.
'The snap-on lid is o~ ~o~t plastlc so th,~t, when the container iB
~elng opened, it can b~,a drawn ~ver a snap pro~,e¢tlon that i8
~'or~od on th~ upper e~ge or th~s cont~iner. ~ i~ ~nown, howeYer,
n coVer ~h,~t is of soft plastic m,~kes it more difficult to stack
,~ plurality o~' ~illed contain~r~ on~,~ on top of t~e ot~er. In
order that l~provcd ~t~cking characterlstics ,~n be i~parted to
the ~nown container, the inner flange edZgQ of the lid rests on
~upporting ~tcp that is forw,ed on the inner wall of the
container. ~owever, thls ~ontainer i8 not well suited ~or use
~or rine~grAin materi~l, for when it iQ being f~ ed, partlcles
c~n ~ccumul~te on t~e insidc ~F~upporting 6t~EZp. ~his result6 in
i~proper seating of' ~hc lid~ or els~ re,guire6 that the sup~orting
~tep the thoroughly clffan~d be~ore t~ lld lc put on.
., .
Ç! ~owever~ this in~e~tion-moulded container has nothing to do with
~; the ~nufncture and configuration o~ the lldded drum according to
the prcssnt in~entiont at no place doe~ th~s document contain any
~, r~rence or de~cription of the manu~actur~ng proces~ and
Sorr~tlon of thc lidded drum Acoord;og ~o the pr~ent lnventlon.
la
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10 FEB '94 09:03 M~USER WERKE BRUEHL P.5
- 21~61
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. The production o~ ~uch a lidded drum which i8 closable in
a ga~-tigh~ manner by tension rinq and drum lid i~ known e.g.
fro~ C~-PS 5~7 041 ~nd de6cribed in detail therein.
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~; P~LBM:
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m~nufa~turer of pla~tic drums who ha~, ~or ~xa~ple, only
one blow mo~ding machine at hi3 diQposal would llke to ~eet
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the requirement~ of variou~ cu~tDmer~ and make different
shape~ and ~ize~ o~ drum~ or different product~ (e.g. bunged
drums, lidded drum~, ca~is~e~6, etc.) on his ~achine. For
this purpose, ~ ~peci~l blow mold i8 required for each
p~oduct.- ~f the drum manufacturer want3 to convert rom one
pxoduct, e~g. a bunqed drum, to another product, e~g. an
lid~e~ drum, he i~ re~uired to ~hut down the blow molding
maahine, and to dismantl~ ~he blow mold part~ for the bunged
drum from the mold mounting plate a~ well a6 the pe~ipheral
~upply lines (e.g. f~r ~ydraulic oil, cooling water,
~hermo~ta~, etc.), and sub~equentl~ tbe blow mol~ parts for
the iidded drum must be re-atta~hed and the lin~ connections
mu~t be re-connected. This ~au~es comparatively long
~topp~e~ ~nd result~ 1~ stoppage expenditure6 for the bl~
I mo~ding ~achine.
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It is an objec~ of the present invention t~ pxovide a
lidded drum and a method ~or making ~ame whi~h doe~ not
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10 FEB '94 09:03 Mf~USER WERKE BRUEHL P.6
211~561
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req~i~e stoppages o the blow molding maahine and does no~
need a change of the blow mold.
!
Thi~ object i~ attained a~cording to the invention in that
~`I a fini~ed bunged ~xum with an upper carrying and tran~port
j.'! ring ~handling ring) and wi~h at 12a~t one ~u~ghole opening in
i.~ the upper bottom i8 u~ed a~ a ~tarting product, with the drum
~, .
. body of the lidded drum being ~ade, by cutting the uppe~ bottom
.
out o~ the bunged drum in ~ch a way that a f~ed opening with
`, ~reat diameter iz formed, whereby the carrying and tr~n~port
~,
rin~ remain~ at tbe top of ~he drum body ag a ~upport for a
corre~pondingly matched drum lid and pos~ibly as an abutment
, .
~i for a ten~ion ring which enga~es from ~nderneath.
.` By way of thi~ method, to first make a completely fini~hed
~unged dru~ ln a blow mold for a bunged drum a~d then to u~e
~; this bunged drum a~ a ~tarting pr~duct for the sub~equent
p~oduc~io~ o an lldded drum body in o~ly one additional
work;ng ~tep - cuttin~ ou~ the upper bottom Gf the ~unged drum
the skilled per~on, in thi~ oa~e, tbe dxum manufaaturer i~
~ provided with a simple, yet important technical t~aching in
;~ order to in~xpen~ively make on an indu~tri~l 6cale a great
nu~ber of di~ferent type~ of drum~, to thereby aahieve a
~i plurality o~ advantage ;
i
- only one blow ~,old, na~,eLy a bunged drum blow mold ~o~
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FEB '94 09: 04 M~3USER WERKE BRUEHL P. 7
~ 2115~61
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bunged dxums with an upper carrying and t~ansport rin~, is
required for ma~in~ ~un~ed drum and lidded drum bodie3;
a co~t-inten~ive, ~pecial lidded drum blow mol~ i~ no
longer re~uired ~reduced inve~ment);
3toppage and ~toppage expenditure~ of the b~ow molding
machin~ encoun~ered during each conversion from one
produc~ blow mold to another product blow mold are
elLmlnated;
bunged drums ~nd lidded drum~ ~an be made at ~ same time
and different cust~mer order~ can be filled
~imultaneou~ly;
a bu~ged drum ~or liquid goods i~ convertible to an
industri~lly uaable lidded dr~m ~or liquid or ~olid good6;
the lidded drum c~n be ~ade immediately from a new bunged
drum or later rom a used bunged drum which was used onc~
or for several times;
the change/conver~ion of the bunged drum into a lidded
drum involve~ extremely simple manufacturing technique~;
the lidded drum body ha8 a ~mooth interior openin~ section
(thi~ i~ ad~antageou~; a) for the upper drum gripper claw,
b) for the e~ptying of re~idue~, c) no ad~e~ion of
re~idual contents in the hollow bo~der a~eas);
th~ lidded drum ha~ the sam~ hei~ht and volume a~ th~
bunged drum;
the lidd~d drum (with or without drum lid) aan be handled
meohanically with the s~me drum gripper~ e ~anner as
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FEB '94 09: 04 Y,RUSER WERKE ERUEHL P. 8
2115561
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,~ the bunged drum;
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.~ - theff upper area of the handling ring servef3 as a eealing
counter-~urf~ce;
- the underfide of the handli~g ring f~ferv~ff5f a~f ~n abutment
for thef tension r~ng and a-cff a suppo~t surface for the
lo~er dru~ gripper claw;
- t~e bunged drum can ~e ohipped already with a drum lid,
~`~ t~fnEfion ring and po6sibly with an in~liner; th~s th~
.:
~! ~f6fe-value of the ~rum i~ enhancefd with re~pe~t to
, . recycling;
., - theff drumf lid can ~ffe provided with at leaBt one bunghole
ri~; and
~ - the h~ndling ring can be mechanicall~ refini~hed in a
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., ~fimple manner when greAter demandfs (e.g. ~ightne66) are
.. d~mandeffd of the lid and drum body.
~ . .
~ I~ known lidd~fd dru~s, the cap-shaped top flash ~t th~f
,,
feed opening was generally sep~rated by a sub6tantially
borizo~tal cut in the es~fentially a~ial dru~ wali p~ojecting
~`l up~d~f beyond the outer 3urface flan~e. ~hus, the cu~ting
edge i~ 6ituated directl~ at the upper rim of the drum.
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i ~f
contrast thereto, ~he lidf~ed drum accordin~ to the
inven~ion i~ char~cterized by a promLnent, ~ub~t~nta~l~y axial
J au~ting efdge or autting ~urf~ce on the insi~e of the drum wall
f ~nd ~n~fid~ff the upper c~rrying .nd tranf~port rin~ at a
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10 FEB '94 09: 05 ~I~USER WERKE BRUEHL P. 9
~- 211~fil
di~tance (approxim~tely 20 mm to 80 ~) belsw the uppor rim o~
the drum ~nd upper su~face of the carrying and transport
rin~. The carrying and tr~nsport ring rema~ ns on t~e lidded
dru~ body a~ ~ massive upper end so that a lidded drum bod~
wi~hout a drum lid (tension ri~ or an empty drum) has
handlin~ ~ing which can be gra~ped and i8 8L~ple to
manipulate. ~nother very important ad~antage of the novel
lidded d~um resides in the ability to grab and tran6port the
closed lidded dru~ with drum lid and ten~ion ring as well ~8
the open lidded drum ~ithout drum lid by means of drum gripper
tool~ (parrot beak~ which ar~ conventionally u~ed for bu~ged
~teel drum~. Conventional lidded drum~ reguire particular
drum grlpper tool~ which, however, cannot ~e used to grab and
transport bunged drums.
The teaching a~cordinq to the in~ention enable~ a
p~odu~tion of lidded dxums from new bunged drums immediatel~
or later (after inte~medi~te storage or ~torage).
According to anoth~r embodiment of the in~ention, any of
used bun0ed drum~ can al~o be utilized as starting product~
a~ter initial use or aft~r multiple u~e (a~ bun~ed drum) for
~ub~equent conver~ion to lidded drum~.
Thig teaching i~ ba~ed on ~he realization that bunged
drum~ with only a comparatively ~mall ieet or dischar~e
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10 FEB ~94 09:05 'rl~USER I~IERKE BRUEHL P. 10
211~5~1
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opening lbun~hole rim) can be emptied only with difficulty or
at great expenditure after be~ ~g u~ed or filled with a
low-vi~cosity substance ~e.gO lacquer or solvent-ba~ed
adhe~i~a ), even when ~pecial mea~ure~ are ~ken in the de~ign
of the drum upper bottom to attain an'optimum emptying of
~e6idue~. A~ a rs~ult, su~stantial problems ari~e in
reconditionin~ the drum~ for po~ible re-u~e or multiple u~e
of the bunged drum for other content~. Thi~ mean~ that
certain drums which were charged with a particularly hazardou~
or low-vi3cosity material can thu~ only be used a~ dispo~able
container~ and must ba di~po~ed o~ a~ a ~pecial wast~ a~ter
one-time ~e. This î~ co~t inten~ive and uneconomical and
represent~ a eonsi~erable ~train on the environment as a
result of increa~ing paokaginy wa~te.
Beaause o~ the retained residual liquid~, a reconditionin~
of ~uch bunged drums invol~e~ high co~t~ and large quantitie~
f washing liquid which must be reproces~ed.
a reæult of the teaahing according to the invention to
convert used bunged dru~æ into lidded drum bodie~ by cutting
out the upper bottom, a vely ~ignificant ~ontribution i~ mad~
to a dimini~hing o~ the current packaging ~ol~e and a
redu~ ion of a ~train on the environment. ~he technical
teaching, which i~ ~Lmple per ~e and co~t-savinq, offerc the
con~ume~ a mean~ for opti~al reco~ditioning of alr~ady u~ed
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`~ 10 FEB '94 09: 06 M~lJSER IAIERKE~3RUEHL P. 11
~ 2115S61
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h~iner~ together with the po~lb~lity of multipl~ u~e, even
'l for different Gontent~ to the~eby expand the ~ange o~
applications.
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~, ~y cuttinq out the upper botto~ of the bunged dru~ and
t`, introducing a oomparatively l~r~ openin~, a ~imple ~nd
,. . .
~ opti~al ~leanin~ and reconditioning of the u~ed contaiher i~
i ~ .
~ade po~sible at a lo~ co~t in connection with u~e o~
~achinery ~e.g. wa~h bru~he~3 and at compara~ly 6m~11 amount~
of cleaning a~ents and wa~h water.
':~
. The container whiah is reconditioned in this manner and
, aon~rt~d to a lidded drum body i~ provided with a drum lid
.,, matching the large size of the cut container opening and
:~, inoludin~ a lid ~eal and ie closed by mean~ of a correspondin~
tension xing in a ga~-tight and liguid-tight ~anner.
A~ a re~ult o~ thi~ ~impl~ mea~ure, a pre~iously clo~ed
aontainer, e.g. a pla~tic bunged drum, can be reusod as a
lidded drum b~dy or can b~ a~igned some o~her industrial use.
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The lidded dru~ which i9 made ~n such a way that something -:
~i new 1~ made ~ro~ something old i~ particularly ~uitable for
,~ u~ with an ih-liner or foil bag o~ with an insertable pla~tic
¢ontainer in ca~e a contact of the new content with the (u~ed~
pos~ibly contamin~ted drum wall should b~ avoided. :~
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; 10 FEB'94 09:06 MRUSER WERKE BRUEHL P.12
--- 211~61
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Through making lidded drum bodies in accordance with th~
invention ~rom ol~ bunged drums, aonsiderable time ~nd cost~
are ~aved (sa~ing~ on material and energy) in compari80n to
the p~oduction of a conventional, co~pletely new lidded drum
body.
~ ven the upper ~ottoms with bun~hole opening, cut out of
~he bunged dxum, need not be dispo~ed of as wa~te o~ proce~sed
~8 ~egenerated waste- According to another advantageous
e~bodiment of the in~ention, a ~uitably matched and ~eparately
~ade circumferential outer ring flan~e i~ glued or welded onto
the cut out upper botto~ with at least one bunghole opening
a~d ~erves a~ a lid rim o~ upper abut~ent for the ten~ion ring
loc~ 80 that the upper bottom of the bunged drum can be u~ed
~18 H druDI lid fl~r the lidded drum l~od~
Bec~use o~ the problems related to final di~posal of fiber
drums made from rolled and ~l~e~ krat paper, which may also
~e coated with all~minum ~oil or printed on wit~ ink, the
indu~t~y in~reasingl~ replace3 fiber drum~ with plastic lidded
drums. The lightwoight lidded drum~ made from bunged drum~
a~cording to the invention are par~icularly ~uitable for use
with in-liners or in~ertable thin-walled cont~iner~ for
application~ in which ~i~er drums are u~ed.
In the foll~wing, the invention iY explained in more
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10 FEB '94 09:07 t1RUSER WERKE BRUEHL . P. 13
; 211~3~61
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: d~t~il and de~¢ribed with referenc~ to ex~plifled embodiment~
r,~ shown in the drawing~.
~:.
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~ ~ig. 1 is a fra~mented longitudinal gection of a
., .
conventional plastic bunged dru~ with
upright handling r~ng (prior art);
-
Fiq. 2 is a partially ~ectional ~ide Y~ew o~ a
. plastic lLdded drum ~ody according to the
invention;
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Fig. 3 ~how~ another conventional pla~tia hunged
', drum with additional lower bottom rollin~
.~, ring ~prior ~t);
;3 .
- ~ig. 4 16 ~ partial longitudinal ~ection, on an
enlarged ~cale, of another known bunged
drum with upriqht handling ring;
'
Fig. 5 ~how6 the bunged dru~ of Fi~. 4 a~ a
lidded drum body a~cording ~o the
~`~ . invention; :
,; ,
Pig~. 6 to 9 ~how dif~erent lid con~truction~ ~or
e ' lidde~ drum body according to the
invention; :
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10 FEB '94 09:07 MI~IUSER I~ERKE 13RUEHL P. 14
2 1 ~ 6 1
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. 10 to 13 4how modified embodiment~ of the carryin~
and tran~poxt ring o$ a lidded drum body
,;,
~ acc~ding to th~ inv~n~-ion;
.
Fi~. 14 is a longitudinal ~ection of thé upper
drum area of a lidded d~u~, aa~ordin~ to
the in~en~ion
~.,
Fig. 15 is a corresponding partial view of
lidded d~u~.with flat drum lid; and
~ig. 16 a~ enlarge~ detail of a lidded drum
according to the invention, with engaging
dru
~ grlpper.
In ~igO 1, referenc~ nume~al lO de~ignates a
large-capacity plastic bunged drum ~or ~toring and
tran~portin~ in particular h~zardou~ and liquid contents,
having a ~u~stantially c~ drical dru~ wall 18. The upper
botto~ 12 of th~ ~unged drum lO i~ provided wit~ at least one
bunghole opening 14 which aan be clo~ed in a gag-tight and
~iquid-tight manner and ha~ a compar~tively very 8mall
diameter. In e~8entially axial prolong~tion of the drum
wall 18, the bunged drum lO ha~ at it~ upper outex peri~eter a
oircumerential oarryinq and transport rinq l~ or handling
rin~ for appliaation o~ me~hanical drum g~ippers. ~he dru~
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10 FEB '94 09: 08 MRUSER WERKE E}RUEHL P. 15
~ 2~5~61
.~ .
qripper~ - e.g. on a for~ stacker vehicle - ha~e ~n upper and
a lower dru~ gripp~r ala~ (parrot be~k) and are ~uitable for
pla~ti~ bunged drum~ ~ith upri~ht handling ri~g and in like
ma~ner or co~ventional bun~ed steel drum~.
`
.
~, Acaording to tbe inventiQn, ~he upper bottom 12 is cut out
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of the bunged drum ~D of Fig. 1 in a ~imple mann~r near the
inner dia~eter of the upright han~lin~ ring 16 60 a6 to ob~a~n
a~ ~hown in Fig. 2 - a lidded drum body 20 which can be
cleaned easily and ha~ a lar~e uppor feed opening 32 ~o as to
be uitable for u~e with solid content~ a3 well.
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On the inside of the drum wall 18 at a distance of
appr~ximately 20 to 8~ mm below the handling ring ~6 o~ below
the feed opening 2~, r~pe~tively, this lid~ed drum ~ody 2~
-j ha# a promihent cutting ed~e 30 along which the upper
~otto~ 12 o~ the former bu~yed drum 10 was cut out. :
Application ~ the me~hod accordin~ to the invention for
; making lidded dru~ is suitable for all types of bunged drum6,
; with ~he caxrying and tran~po~t rin~ ~eing sub~equently usable
: as a lid ~upport.
Fig. 3 show~ anoth~r b~nged drum ~2 ~hich i~ pro~ided with
bottom rolli~g ring 44 and also ~uitable as a ~tarting
pr~duct for ~aking a lidded drum~
; - 12 -
10 ~EEI '94 09:08 Mf~USER WERKE E~RllEHL P.16
211.~6~
..
The bung~d drum8 (~tarting products) can be made in
different way~. In general, bunged drum~ are blow ~olded in
`. one pie~e. It i~, however, al30 known to make drum~ e . g . by
rotary centrifugal method, by injection molding, or in
'5. comb$nation with extru~ion me~hod. Thu6, a drum body with
lower bottom can be made eOg. by blow molding, with an upper
~ ottom, which i~ previou~ly made through injeotion molding and
.. ~' includes an integral handli~g ring, bein~ welded onto this
~ drum p~efo~m.
.
^ i
Fig. 4 ~how~ an enlarged parti~l 3e~tion of a bunged drum
;.~ (10, 42). The carrying and tran~port ring 16 ia arranged in
direct axial extension of the drum wall. For engagement of the
.,~
drum gripper claw~, the carryinq a~d t~an~port ring 16 has a
~u~stanti~lly horizontal contact surface ~6 which i~
.
;-. ex~rnally acce~iblR frQm underneath and a ~ubstan~ially
v~rtical contact ~ur~aa~ 48 whi~h is internally ~cces~ible
. from ~bo~e. ~he upper ~ottom 12 having a bungh~le ri~ with
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bunghole opening 14 a~ranged in a ~un~hole casing S0 i6
conne~ted with the ~rum wall 18 via a aonical annul~r ~ura~e
part 52. The point o~ attaahment o~ engageme~ groo~e 54
formed therein fo~ the upper drum g~ipper claw extends with
it groove ba~e at a di6tance below the level plane S8 of the
horizonta~ contaot surface 46 of the carrying and t~ansport
ri~g 16.
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10 FEB '94 09:09 M~USER WERKE BRUEHL P. 17
- 211~5~1
The lidded drum body ~0 ~hown in Fig. S i8 $ormed b~
~utting the upper bottom 1~ out of t~e bunged drum 42
according to Fi~. 4, with the cutting edge 30 extending on the
in~id~ of th~ drum wall 18 at a distance below the level
plane 48 and $urther below the upper ed~e 56 of the drum whi~h
i~ formed by the fiurface of the carrying and tran~port
rin~
In Fig. 6, a lidded drum body Z~ according to the
invention with a drum lid 24 of hard plastic ~aterial and a
teR~ion ring 26 i~ ~o~pleted to for~ an lidded drum. An
annular ~eal 34- whi~h ~eal~ the dru~ lid 24 a~ainst the
beveled ~ealin~ surface 60 o~ the carrying and tra~port
ring 16 iG in~erted in the rim o~ the d~um lid 24. The
~aling ~u~ace 60 i8 suitably arranged next to the upper
edye 56 of the drum, ~ince thi~ upper edge, e.g. in a u~e~
dru~ body, has already been subjected to 8tre~8 and may have
damag~Y such a~ scratcheY or gcrapes. Thi~ e~odiment i~
~uit~ble e.g. in ~o~bination with an in-linçr ~foil bag~ ~or
VifiCOU~ con~ent~-
Xn Fig. 7, the lidded drum body 20 i~ provided with a dru~lid ~2 o she~t steel whi~h i~ ~ecured onto the car~yin~ and
t~an~port ring 16 in a g~-tight and li~uid-tight manner by
means o~ the o~erlapping ten~ion xing 26. Thi~ lidded drum
vergion i5 p~x~iaularly suitable e.g. in combination with a
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10 FEB '94 09:09 ~RUSER WERKE BRUEHL . P.18
:: : 211~ ~ 61
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~ thin-walled, but sta~le, insertable container fsr
`j low-viscosity contenti~.
Another embodiment with a ~elf-fa~tening i~nap-on lid 64 of
pla~tic ma~erial ii~ shown in ~i~. 8. No tension ring i6
re~uired for this lid. ~he low~r edge of ~he ~nap-on lid 64
~8 isegmented and provid~d with loaXin~ pin~ 66 which radially
pro~ect inwardly and automatically engage in alo~ed poisition
. .
- unde~neath the e~i~entially horizontal contact urface 48 ~f
the c~r~ying and trani6port rinq ~o ais to s~cure the lid.
.', .
A further embodi~ent wi~h a 3elf-fa~tenin~ alinch lid 68
' made of sheet i3teel i~ 6hown in Pig. 9, with the ~lightly
.~ prol~n~ed lower xLm o~ the i~heet metal lid bein~ likewise
segmented. Proje~ting downwa~dl~ from the rim of the lid ~re
ton~ue-i~haped ~e~ment~ 70 which after ch~r~ing the drum
body 20 and attachm~nt o~ tha clinch lid 68 ar~ bent or
clin~hed in~ardly underneath the rim and the horizontal
contact sur~ace 48 of th~ carryin~ and transport ring 16. ~he
lidded drum ver~io4s ~hown in Figs. 8 and 9 are ~uita~l~ e.g.
- ~or dry bulk mat~rial.
~, .
., For special appli~ationi3 and to improve the isealin~
con~act pres~ure, it may be suita~le to dei~iign a -
`~ circu~ferential protuboranae (isealing ca~) in form of a
semicircular pro~ile 72 or trian~ular profile 74 as sealing
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~: 10 FEB '94 1~9:10 MRUSER WERKE BRUEHL P. 19
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edge on the uppe:~ edge 56 o~ the drum and/or on the beveled
.: sea~ing surface ~0 . This can be achieved, e . g. in an lidded` drum body made from a ~ed bu~ged drum, throu~h ~imple
`~ fini~hing of ~he upper edge $6 of the drum, whereby at a ~ame
~- time possibly existing 6crape6 and ~cra~che~ are removed fro~
the ~ealing 8ur~a~e. Suoh an embodiment with ~ ~emicircular
pro~ile 62 a~ ~eali~g strip o~ the carrying and transport
ring 16 is shown in ~ig. 10.
~:`
A si~ilar emkodimont with two triangular profiles 74 a~
~ealing ~txip is shown in ~ig. 13.
.,'
The upper bottom 12 with conical annular sux~ace part 52
of the previou~ bunged dru~ i~ ~hown in broken lin~ in
Fi~. 10, ~ith the cutting edge 30 being formed a~ a ~ertain
di8tanc~ le.g. 5 to 15 m~) fro~ the inner ~ur~ace o~ the drum
-. wall KO that a ~uppoxting edge 7 6 remaln~ o~ the in~ide as an
~ ~dditional lid support or lower 3upport.
.
Fi~ Xow~ a plastic lid 24 with a di~tinct
aircumferential reinforcing rim 78 at the lower drum lid whi~h
~an be additicnal}y ~upported ~rom below, e.g. at increasing
`' stac~ing load upon the inner support edge 7~, by the inner
~all ~ the lidded dru~ body 20. The drum lid 24 ~ ain
held by a ten~ion rlng 26 in the locking position, with the
~ lid 3eal 3g being pre~ed and prefftres~ed in a ~as-tight and
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10 FEB '94 09:11 M~uSER WERKE BRUEHL P.Z0
21155~1
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liquid-tight manner again~t the ~ealin~ ~ur~a~e 60 and the
~emicircular proile 8ealin~ strip 72 on the carrying and
tran~port ring.
.:
: ~he drum lid ~4 is ~upported radially by the inner w~ll of
the lidded drum body and îs centered by bearing upon th~
es~entiAlly vertical contact sur~ace ~8 o the carrying and
tran~port rin~ 16 and the subjac~nt area o~ the inner wall o~
!th~ drum located. Al~o this lidded drum i~ grabable and
transp~ortable by a dru~ gripping tool which i~ otherwise only
~uited for conventional bunged drum~, sin~e it iu ensured that
the upper dr~m g~ipper d aw can engage in the drum lid from
`~;
the in~ide without imp~d~ment at lea~t up to the lev~l
plane .58 of the horizontal contact ~urface 45.
shown in Fig. 12, a lidded dxum 20, which i~ le~ with
a 6upporting edge 76 behind the c~tting edge during cut out o~
the uppe~ botto~ o~ th~ bunged ~rum, i8 equally ~uitable to be
closed in a ~as-tight and liquid-tight manner ~fter
introdu~i~g the content by a drum lid 80 which i~ welded onto
the supporting edge 76 as a weld-on lid. In thi~ di~posable
c~ntainer de~ign, the weld-on lid 80 has an outer diameter of
the ~ame ~îze a~, or slightly ~maller ~han, the inner diameter
of the drum opening a~ove the supporting ed~e 76.
As s~own in Pig~ 14, the c~ying and transport ring 15
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`~ 10 FEB '94 09 11 M~USER ~ERKE BRUEHL P.21
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`~ serves as a ~upport and sealing ~urface for the drum lid 24being pl~ced thereon with interpos~ ~ealing ring 34. Further,
: the carrying and transport ring 16 ~erve~ with it~ lower,
. e~entially horizontal contact ~urface 46 for the lower drum
`~ gripper ~la~ 4~ of a d~u~ gripper a~ an abutment for a ten~ion
ring 26 which overlap~ and hook~ on fro~ below. The upper
bott~ which i8 GUt out of the for~er bunged drum and ha~ a
bunghole opening 14 can advantageously be provided with a
.
~eparate and previously made annular flanye 28 and i~
converted in thi~ manner to a u~able drum lid ~4, with the
- co~parati~ely thin annular ~lange 28 be~ng welded or glued
wi~h the upper ~otto~ (12) 24 ~ the bunged drum along the
oi~oumferential wRlding zone 32 and uited with it~
~, .
i~ cro~ ectional profil~ to the upper cro~s-~ectional
. conigura~ion of the carrying and transport rin~ 16. At the
, inner wall ~ide of the drum, the drum lid 24, that i8 the
. annular ~lange 28 is ~lightly drawn inwardly and downwardly -
at lea8t until below the level plane 58 of t~e hoxizontal
".1
~ contact ~urface of the carrying and transpo~t ~ing 16 - in
. ~J
~.~ parallel rel~tio~hip to the drum wa~l. In this manner~ an
s engagement groove 36 with a ~u~tantially ~ertical contact
sur~aco i~ attained in the drum lid 24 for engagement ~y the
up~er druw ~ripper claw of the particular drum gripp~r which
i~ o~herwi~e onl~ ~uitable for bunged drumR.
In ~i~. 15, the lidded drum ~ody 20 i3 shown ~ith a 1at
t
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~ 10 FEB '94 09:lZ MRUSER WERKE BRUEHL P.Z2
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`.drum }id 24, In general, the u~ed d~um lid can be made e.g.
of sheet 6teel (~pproxi~nately 1. 5 tG 2 r~m thiak) c~r o~
~injection ~olded thin-walled pla6tic material (approximately
3.. 2.5 to 3 mm thick). The illuntrated pla~tic ~la~ lid 24 iK
preferably u~ed pa~ticul~rly w~en using insertable thin-walled
pla~tic container~ ox ~oil bags ~in-l~ners) in the lidded drum
body 20.
~,jl , .
In Fig~ 16, a drum lid 24 with engagement ~roove 36 i8
plnced on the lidded drum body charaaterized by the cutting
edge 30 and is cslamped in a gaR-tight ~nd liquid-tight manner
onto the sealing ~urface on top of the carrying and transport
ring 16 b~ ~ean~ of the U-shaped tension ring 26. The }ower
supporting dru~ ~ripper clAw 40 b~ar~ upon the lower
~3 horlzont~l ~o~tact surfaaa a~d upon the lower ~hank of the
~en~ion ring 26, while the upper drum gripper cl~ 38 engagss
¦ in the en~agemerl~ g:roove 36 of the drum lid a~d thus, in a
way, ~imultaneously engages in the feed opening 22 of the
ded drum body and bears upon the ~ertical contact surface.
Thu~, the drum gripper can not only ~ra~p and handle a filled
lidded dru~ (e.g. with a wei~ht of 220 kg) which i~ clo~ed by
a lid, but a~o an empt~, unsealed lidded dru~ bod~.
~ :.
In principle, it would also be po~ible in a bunged
`~1 dru~ 42 with lower circumferential bottom rolling ring 44 - ~
-I ~h~wn in ~ig. 3 - to ¢ut out the lower drum bottom nea~ the
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10 FEB '~4 09:12 MRUSER ~ERKE BRUEHL P. 23
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bottom ro~lln~ ring 44 for parti~ular applications and to seal
the opsnin~ with a dru~ lid. In this ca~e, the upp~r
bottom 12 with t~e bun~hole connection 14 of the bunged
drum 42 beco~s the new lower bottom of the ~o-areated lidded
drum b~dy. It i~ clear ~rom the fore~oi~ de3cription that
through ~ple measuresi the ran~e of appli~ations and the
pos3ibilitie3 of u~e ~or a new bunged drum which îs provided
a~ ~uch only for particul~r objecti~e~, ox for a u~ed
~hermopld~tic ~unged dru~ which is only tran3ferrable for
final dispo3al (e.g. burning, grinding in~o rege~e~ated
~aterial) can be con~iderably expanded. It will be under~tood
that basically any o the de~ign~ o~ bunged drums aan be
con~ertsd to lidded dxum bodie~ according to the invention by
c~tting out the upper bottom or even by ~eparatin~ the entire
drum heAd or al~o by cuttin~ exi~ting circumfexential ring~
and aompletion to a lidded drum togethcr with a mat~hing drum
lid ~nd, if de~irod, ~l~o wieh ~ ten~ion ring.
. ~''
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