CA1103968A - Packing paper and method of making same - Google Patents
Packing paper and method of making sameInfo
- Publication number
- CA1103968A CA1103968A CA332,399A CA332399A CA1103968A CA 1103968 A CA1103968 A CA 1103968A CA 332399 A CA332399 A CA 332399A CA 1103968 A CA1103968 A CA 1103968A
- Authority
- CA
- Canada
- Prior art keywords
- paper
- sizing
- web
- starch
- grain
- 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.)
- Expired
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/28—Starch
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/14—Secondary fibres
Landscapes
- Paper (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A paper and a method of making the paper for packing purposes, especially for making corrugated packing paper, in which paper pulp can be formed of fibrous material derived from up to 100% of scrap paper, and in which the web forming the paper is treated with a dispersion or solution of agglu-tinized grain, tuber or root material containing starch, together with the protein in such material.
A paper and a method of making the paper for packing purposes, especially for making corrugated packing paper, in which paper pulp can be formed of fibrous material derived from up to 100% of scrap paper, and in which the web forming the paper is treated with a dispersion or solution of agglu-tinized grain, tuber or root material containing starch, together with the protein in such material.
Description
~1~3~68 ,7 P~CICI~tG PAP~R A~D klET~IOD OF M~ G SA~
S P E C I F I C A T I O N
_ ,: _ The ~present lnventlon relates to packing paper and, rnore S partlcularly ~ to low-grade paper ~or packing purpoQes ~ e .g O the abrlcation o~ corrugat~d paper, and to a method o~ maX~ æuch paper .
:, Backaround o the Invention ~ It i~ known to maXe low-grade paper, e~peclally packing ; ~ lo paper, cardboar~ and~ or example, corrugated paper for pack~gin~
! :
urposes, ~using proportions o~ old or scrap paper which may be orted p~or to use to remove impur~ties and ~orelgn bodiee., ql~e scrad? paper ls transforme~ into a ~lurry ln a pulper in an aqueous suspenæion, i3 mil~éd~ ia combined with paper additiYes, and ~9 then 15 ~ ~eat~3d in the usuE~I:way~ e.g. in a fourdrinior machine, to producethe paper web. ~ me paper ~lu~ry 1s 61onerally applled in thls p~o_ ce:es ~onto a oontinuous endless. ~creen or sleve upon which the sll~rry orms a mae ~rom whl~h th~ wat~r dralns, the Dat being ~urther de-~ater~d~by:~uctlon~and/or~squeezin5~ xe~idual water belng extracted ~ up~n~d~ing w~th oxternally supplied heat. ~he latt~r drying step g-nerally evaporatea the:res1dual moisture.
Su~h~,:papers Gan be rolatively low co~t paper~, e~g. for packing purposos~ ~and can be formed ir~to corrugated paper if de~lred.
ffort~ have been made to use predominantly ~crap paper to form the 1b~r ~content for 8UC}l paakaging p~pers~ b-~t this has not proYed to ,,. .:
~, :
"~
9~
be~ ~ully ~uccess~ul bec~u~e ~he physical prop~rtie~ ~ tha p~ck~lrlg paper pxa~uced are not ~lw~y3 ~ f~ory~, ~ha phy3ic~31 proparties whi ::h a~e o~ para~ or~ance ~re ~h~ fl~t rul?ture ~r~th ~ncl b~c~cllnc~ rasi~tanc~ tl~a ~ bu~kllnS3 re~istan~ ox h~ rln5T ~ucX-lin~ r~sl~tan~ d~ n~c~ r~sp~3c~ y ~y tents d~Acr~eld ln ~man ~ndustrial 5~ rd ~153143~ G~ ndust~l.al S~ndaxd D~ ~314~ ho t~S ~n~us~lal 5~and.~ S 1164.
Th~ m~ch~rllcal pro~rtica o~ th~ ~a~r can ~o impr~v~d ~ecr~a~lng~ pxopo~n o~ ~cr~ ~ forTn1n~ thQ ~lb~, usln~
r~latiY~ly ~xpen~va c~llul~lc n~atorial 0uc~ a~ Y~t~ c~llulos~
an~ c~yln~ out e~0~slvOE ~lz~n~ ~operat~ons .
The t~m "~zinS~ hex~ u~d i~ it~ mo~t g~n~ral sen~e to ~nd~c~t~ the appl~cati~n a~ a blnd~ ~r cc~a~ing ~o th~ p~p~ w~ to lmprov~ t~e m~ch~ l pro3?o~ tho~f., Such bin~er o~ ha~ ~er~ u~ea ~t~ ncorpor~in~
m into 'c~ ma~ ~rlo~ to ~ormat~on o~ tha ~at~ or in sur-~a~ appli~at~on~ in ~ h the ~ d ~Q ~2~a we~ ~n~ ~o~
lo~ a aiz~ or o~herwl~"
~cln~ pr~os C~ en~rally lns~lu~ two op~ ly xo~at-20 ~ln~ n ~ h ~o papax w~b ~ pas~ a~ which p~ea~ t~
lzlns~ o into ~ pap~ ~ nd~or d~tx~ ut~ ~he si~ co~-~ . . ~ , .
l~on on ~ ~ur~ o~ thet ~ w~
Sn ano~a~X sl~cin~ ca~ion~ th~ ~rlc~io~
pa~e~r w~ th~ D~ng ~o~po-~;lc~ pr;~yed onto tho wel~ on on~
1` 25 or ~oth ~i~. :
_2 "
. '.
The sizing composition primarily used is agglutinized corn starch which is especially prepared for use on paper. It has been found that the application of agglutinized corn starch to paper permits packing papers to be produced whose mechanical properties are relatively good so that the fiber contents of the paper can be made up primarily of scrap paper. However, this classical use of starch sizing has the disadvantage that it is relatively expensive, the starch being itself extracted from the plant material and fabricated by a relatively costly energy-consuming series of steps, especially since the starch is pro-duced by a wet process and significant amounts of energy to form the dry stage product generally employed in the paper field.
~t is the principal object of the present invention to provide a paper and a method of making a paper which is free from the disadvantages of earlier packing papers and especially papers adapted to be converted into corrugated paper, and which can~be more econom;cally produced than earlier packing papers using scrap paper as a predominant fiber source. The paper nevertheless~ has excellent physical properties without the disadvantages of earlier papers mentioned previously.
: ~ .
.
~: ' : ~ ' .
~ ::
.
.
:.B. - 3 -;,~
' ~. ' 9~
This object will become apparent hereinafter, in accordance with the present invention, which is based upon the agglutinization of raw plant material, namely, grain, tubers and roots, which contain starch, together with the usual plant protein and the treatment of a paper web with this material without first recovering the'starch in a purified form, to obtain a packing paper wh:ich'has excellent physical properties notwithstanding the fact that its fiber content i5 predominantly or completely of scrap paper. : ' According to the'invention, therefore, a packing paper, especially one which'can ~e converted into corrugated paper, has a fiber content which can consist of up to 100% fiber derived from scrap paper, especially sorted and/or unsorted scrap paper, the usual paper additives such as fillers, pigments, ; wetting agents and the like,' wh~'ch is provided with a surface sizing of grain and~or tu~er and/or root agglutinized composi-tions with'agglutinized starch'of the composition being applied together with the residual protein after dispersion or in solu-tion, to the surface of the paper during its production.
20~ ~ ~ The paper of the present invention thus makes use of :
an~extremely low-cost raw material for the fiber content, namely, :
scrap paper as well as an e~tremely low-cost sizing composition, .
namely,~grain, tuber or root compositions aontaining starch : which is agglu-..
:
::
~ 4 - .
.'~: .
,. . .
: , , . ,, - ~ :
- . ~ . . - .. . . . :
.. ..
. -. : . .. : - . .
. . : :. . ; . .. .
.~. ,j, .
tinized ~tarch and dispers~d or dlssolved protein which together have been found to impart high ~tr~ngth to the paper.
Thus, ~n sp~te o~ th~ fact that earlier sizin~ approaches have relied upon the use of high-co~t classical starches, especially potato staxch or corn ~tarch, the sizing compo~ition of the pre~ent invention 1~ a low-co~t product obtained by the ~imple aggl~tiniza-tlon o* ~he starch content~ of grains, tubers a~d nuts~ withou~ sep-aration of the protein and applied directl~r without drying to a powder .
~he ~rain ca2~ be wheat, rice, millet and/or milograin or th~ like ,, q he tuber~ can be potatoes or the liko a~d the roots can be manioc, taro or the like.
~ccordlng to the in~ventlon, the plant material ~ s comminut-ed w~th the fib~ou~ and sXin portions remoYed a~ter agglutini~atio~
o~ ~ho starch com3?on~nt~ or by slfting or c~ntrifugation~ th6 fibrou~
material~ of the~e removed ~st~ces being rccombln~d with the 8iz_ ing c~mpositiGn before the appllcatlon thereo~ to the paper machine.
Accordin~ to a furth~r feature of the in~ention" the sur-fac~ ~lzing of th~ paper web iB carri.ed out wlth agglutinized s~arch ` an~ disper~ed and/or ~oluble proteln from whea~ ltriticu~ vulgare) to whlch small ~i~uant~tie~ o~ ammonium persulfate can be added as ~n ~ :
oxidizlng ~gen~,~ me ammonlum peraul~a~ al80 reduces the Vis~CoBity : o~ the ~izin~ compo~itlon whil~ the whea protein tends to form a r~tlculated or skeletal structure which increases the ~inding force.
:25 ~ The agglutinated starch composlt~on formed from the wheat . i ~
18 applied to the paper wob and causQd to penetrate lby ~iziny press) he latter ~o that the flnlshed papor ha~ the follow~ng properties:
: ' _5_ -,, sur~ace weight tweight par unit ~rea): 128 g/m2 .. ~$~ing applicatlons 8 g/~2 burst pres~ure~ ar ~ C~T (flat buckllng ~trength accordlng to DI~ 53143)J 2~0 Denl~on tear ~tr~ngth~ 1 Ed~e buckl~n~ resi~tanc~ according ~o DI~
53149.5 23 kp~cm2.
. ~. .
. In anoth~r embodi~ent of t~e lnvent~on~ the aggluti~izati~on whlch ii3 a sitarch wheat compo~it~on i~ sprayed on the paper web and the paper then has thQ ~ollowing prop~rtieAs ~ur~ce weight: 132 gf~2 ~ ~izing appl~a~ion: 8 gfm~
~ . .
bursi~ presY~ro 3.6 ~ar C~ la~ buckllng ~tren~th according to 53143)s 190 Den~son teax ~trength~ 16 d~e bucXling r~ tanc~ according to DIN
5314gs 22 Xpfcm~.
`~ 20~ In both oi~.eb~ Yamp~ t~e ~ker content of the paper t~ ulp wa5 constitut~d ~xclu~lvely ~rom unsort~ s~rap paper and the lng~ WaL a ~ixtura:o~ water and ~round wheat aft~ a~glutlnlzatlon o~`~h~ starch in the:wh~at :and 8ub8equ~nt removal of the hull pieces ; by ~l~ting, the:~lxt~re bei~g rolled lnto or sprayad upon the paper ~25 web a~ described.
, , Accor~ting tG anoth~r a~p~3ct o~ the in~v~r~tioll ~ paper whlch C~n b~ used ~o p~odu~e corr~ atad pap~r ia mas~3 by c~ean1T~
unsorted And,~or ~oxted scxap paper to which c~llulos~ m~ be added (althouç~h th~ c~s~ary) ~ th~ f~brou# ma~ter b~3in~ co~in~3~
$ w~th wat~r ~n a pulp~r nnd t~an~oxm~d ~nto a~ a~u~ou~ susp~nsion whic~ d an~l c~ co~ ln~d with eluxiliary ~ t~ce~ u~din th~ pap~x lr~du~try a~ d abovo. 5~ re~ul~lny ~ash i~ ~orm~
¢ont~nuou~ly lnt~ ~ paper ~ an~ 1~ d~w~t~red9 p~ d ~ur~e slz~ accordanc~ w~th ~h~ lnYont$on~ aS,a then a~ter~xi~d to form lo a pa~cagl~lg p~r~ ~ccor~in~ ~o t~h~ ~w~ntlon~ th~ rap p~er or ol~ papar c~s~pon~n~ ca~t~ m7i~:~3 up to 98% ~nd ~ r r~c~er~d ~ro~ the #4 ~lng ad~t~v~ 2% by w~l~h~ or r~ e o~ the~ flb~r cc~n~Dnt o~ dry p2~P~ th~ ~zi~ con~i~ting o~ whea~ and/o~ drlod tul~r a~d/Qr ro~t ln ~lCh th~ ~ta~c~h conter~t has ~on part~ally o~ co~3ple~ely ~g~lu-tlna~ d r8*ai~L~ ~he ~rig~n~l di~p@rsod or solubla p~O~ rom ~: tb~ pl~s~ -~a~0~1~1. I!h~ applicat~on o~ the ~izln~ can ~e with o~
hou't ~ n~ lnto or on~o the3 pApor w~b ~nd~or ~y ~praylnS~.
c~lln~ l:o an ~xta~t f ~atura of th~ lnv~ntlon ~ com~er -whoa~ ~ al~aned~ a~l~o~!l wlth wat~r and iH Wt~t: mill*d to p~o-uc~ ~ mixtux~ whlch ~ ~ub~ctod at ~ ~uba~mosp}~ lc pr~ura to ~a, ~ a thermill-~echanical txoatm~nt ~o produc~ a ~nlxturo of .Ubl~ aqslutlnat~d B~:~Cb wlt~ ~E~t~ y 801u~1e~ par~ally d~6-~: :
r~ wh~at pro1:~in ~ro~ w~ch ~lb~ he hul~ o~ th~ wheat grai~ ~ re~o~d, e,,q~ parateel out by siiEtlng o~ Cen~ri~ugat~on.
25 ~ lxture 1~ ~t~ pll~t~ tO th~ sc:r~p p~ r ~teb in the a;s~ount and m~n~er p~oviouJly ~e~c~ib~fl. The ~lbrou~ whl~ i~ ~o~a~a~d .
.
.~s~7 ` ~ 3~
~rom the ~izing mixture 1s fed to the ~iber hull which consists primarily of g~olmd scrap paper fra~ments in suspension.
~ ~dvantageousl~7, ~rior to, during or after tl~e wet milling,0,5~ by weig}lt to 2~ by weight (pre~erably about 1,0~ by weight) am-S monium per~ulfate or ~no~her oxidizing agent i~ added to the ~izlng composltion to reduc~ it~ viscosity.
For example~ 100 kg of commexcial wheat a~ter cleaning to remov~ sand~ du~t and ~traw, i~ combined with a twenty-~old guz~tity of water in a ve55el pro~ided with an agitator and the re6ultin~ mix-ture i~ ed to a wheat-grinding mill. Prior to the wet milling, in order to reduce the viscosity ~which tends to ri3e upon subsequsnt agglutinization) 0.85 kg o~ ammonium persulfate i8 added. After the wet ~illing th~ mixture ia ~ubjected tD thermo-mechanical treatment by humplng 1~ at unlform speed ~nto a chamber at 1.6 bar gauge in whlch t~e mixture iB treated with ~team, The re~ulting mlxture of oluble agglutinated starch with wheat proteln, the ~tt~r partially soluble and partiall~ disp~r~ed~ is then ~ed to an oscillating sieve for ~emoval o~ tht3 fiber~ out 14. 3 kS~ o~ fiber lo re~40ved in hie mannex an~ i~ fed to the papex pulp. A~t~r applicatlon o~ the ~'` 20 ~l~zing mlxt~re th~ papor web is ~uhjeGted to pres~ure in a slzing pres~ in which lt i8 pa~ed ovar a plurality of steam heat drying ~llnders .
In wcordance wi~h another embodiment o~ the invention, comminuted taro root iB cleaned and w~t ~illed with water with the
S P E C I F I C A T I O N
_ ,: _ The ~present lnventlon relates to packing paper and, rnore S partlcularly ~ to low-grade paper ~or packing purpoQes ~ e .g O the abrlcation o~ corrugat~d paper, and to a method o~ maX~ æuch paper .
:, Backaround o the Invention ~ It i~ known to maXe low-grade paper, e~peclally packing ; ~ lo paper, cardboar~ and~ or example, corrugated paper for pack~gin~
! :
urposes, ~using proportions o~ old or scrap paper which may be orted p~or to use to remove impur~ties and ~orelgn bodiee., ql~e scrad? paper ls transforme~ into a ~lurry ln a pulper in an aqueous suspenæion, i3 mil~éd~ ia combined with paper additiYes, and ~9 then 15 ~ ~eat~3d in the usuE~I:way~ e.g. in a fourdrinior machine, to producethe paper web. ~ me paper ~lu~ry 1s 61onerally applled in thls p~o_ ce:es ~onto a oontinuous endless. ~creen or sleve upon which the sll~rry orms a mae ~rom whl~h th~ wat~r dralns, the Dat being ~urther de-~ater~d~by:~uctlon~and/or~squeezin5~ xe~idual water belng extracted ~ up~n~d~ing w~th oxternally supplied heat. ~he latt~r drying step g-nerally evaporatea the:res1dual moisture.
Su~h~,:papers Gan be rolatively low co~t paper~, e~g. for packing purposos~ ~and can be formed ir~to corrugated paper if de~lred.
ffort~ have been made to use predominantly ~crap paper to form the 1b~r ~content for 8UC}l paakaging p~pers~ b-~t this has not proYed to ,,. .:
~, :
"~
9~
be~ ~ully ~uccess~ul bec~u~e ~he physical prop~rtie~ ~ tha p~ck~lrlg paper pxa~uced are not ~lw~y3 ~ f~ory~, ~ha phy3ic~31 proparties whi ::h a~e o~ para~ or~ance ~re ~h~ fl~t rul?ture ~r~th ~ncl b~c~cllnc~ rasi~tanc~ tl~a ~ bu~kllnS3 re~istan~ ox h~ rln5T ~ucX-lin~ r~sl~tan~ d~ n~c~ r~sp~3c~ y ~y tents d~Acr~eld ln ~man ~ndustrial 5~ rd ~153143~ G~ ndust~l.al S~ndaxd D~ ~314~ ho t~S ~n~us~lal 5~and.~ S 1164.
Th~ m~ch~rllcal pro~rtica o~ th~ ~a~r can ~o impr~v~d ~ecr~a~lng~ pxopo~n o~ ~cr~ ~ forTn1n~ thQ ~lb~, usln~
r~latiY~ly ~xpen~va c~llul~lc n~atorial 0uc~ a~ Y~t~ c~llulos~
an~ c~yln~ out e~0~slvOE ~lz~n~ ~operat~ons .
The t~m "~zinS~ hex~ u~d i~ it~ mo~t g~n~ral sen~e to ~nd~c~t~ the appl~cati~n a~ a blnd~ ~r cc~a~ing ~o th~ p~p~ w~ to lmprov~ t~e m~ch~ l pro3?o~ tho~f., Such bin~er o~ ha~ ~er~ u~ea ~t~ ncorpor~in~
m into 'c~ ma~ ~rlo~ to ~ormat~on o~ tha ~at~ or in sur-~a~ appli~at~on~ in ~ h the ~ d ~Q ~2~a we~ ~n~ ~o~
lo~ a aiz~ or o~herwl~"
~cln~ pr~os C~ en~rally lns~lu~ two op~ ly xo~at-20 ~ln~ n ~ h ~o papax w~b ~ pas~ a~ which p~ea~ t~
lzlns~ o into ~ pap~ ~ nd~or d~tx~ ut~ ~he si~ co~-~ . . ~ , .
l~on on ~ ~ur~ o~ thet ~ w~
Sn ano~a~X sl~cin~ ca~ion~ th~ ~rlc~io~
pa~e~r w~ th~ D~ng ~o~po-~;lc~ pr;~yed onto tho wel~ on on~
1` 25 or ~oth ~i~. :
_2 "
. '.
The sizing composition primarily used is agglutinized corn starch which is especially prepared for use on paper. It has been found that the application of agglutinized corn starch to paper permits packing papers to be produced whose mechanical properties are relatively good so that the fiber contents of the paper can be made up primarily of scrap paper. However, this classical use of starch sizing has the disadvantage that it is relatively expensive, the starch being itself extracted from the plant material and fabricated by a relatively costly energy-consuming series of steps, especially since the starch is pro-duced by a wet process and significant amounts of energy to form the dry stage product generally employed in the paper field.
~t is the principal object of the present invention to provide a paper and a method of making a paper which is free from the disadvantages of earlier packing papers and especially papers adapted to be converted into corrugated paper, and which can~be more econom;cally produced than earlier packing papers using scrap paper as a predominant fiber source. The paper nevertheless~ has excellent physical properties without the disadvantages of earlier papers mentioned previously.
: ~ .
.
~: ' : ~ ' .
~ ::
.
.
:.B. - 3 -;,~
' ~. ' 9~
This object will become apparent hereinafter, in accordance with the present invention, which is based upon the agglutinization of raw plant material, namely, grain, tubers and roots, which contain starch, together with the usual plant protein and the treatment of a paper web with this material without first recovering the'starch in a purified form, to obtain a packing paper wh:ich'has excellent physical properties notwithstanding the fact that its fiber content i5 predominantly or completely of scrap paper. : ' According to the'invention, therefore, a packing paper, especially one which'can ~e converted into corrugated paper, has a fiber content which can consist of up to 100% fiber derived from scrap paper, especially sorted and/or unsorted scrap paper, the usual paper additives such as fillers, pigments, ; wetting agents and the like,' wh~'ch is provided with a surface sizing of grain and~or tu~er and/or root agglutinized composi-tions with'agglutinized starch'of the composition being applied together with the residual protein after dispersion or in solu-tion, to the surface of the paper during its production.
20~ ~ ~ The paper of the present invention thus makes use of :
an~extremely low-cost raw material for the fiber content, namely, :
scrap paper as well as an e~tremely low-cost sizing composition, .
namely,~grain, tuber or root compositions aontaining starch : which is agglu-..
:
::
~ 4 - .
.'~: .
,. . .
: , , . ,, - ~ :
- . ~ . . - .. . . . :
.. ..
. -. : . .. : - . .
. . : :. . ; . .. .
.~. ,j, .
tinized ~tarch and dispers~d or dlssolved protein which together have been found to impart high ~tr~ngth to the paper.
Thus, ~n sp~te o~ th~ fact that earlier sizin~ approaches have relied upon the use of high-co~t classical starches, especially potato staxch or corn ~tarch, the sizing compo~ition of the pre~ent invention 1~ a low-co~t product obtained by the ~imple aggl~tiniza-tlon o* ~he starch content~ of grains, tubers a~d nuts~ withou~ sep-aration of the protein and applied directl~r without drying to a powder .
~he ~rain ca2~ be wheat, rice, millet and/or milograin or th~ like ,, q he tuber~ can be potatoes or the liko a~d the roots can be manioc, taro or the like.
~ccordlng to the in~ventlon, the plant material ~ s comminut-ed w~th the fib~ou~ and sXin portions remoYed a~ter agglutini~atio~
o~ ~ho starch com3?on~nt~ or by slfting or c~ntrifugation~ th6 fibrou~
material~ of the~e removed ~st~ces being rccombln~d with the 8iz_ ing c~mpositiGn before the appllcatlon thereo~ to the paper machine.
Accordin~ to a furth~r feature of the in~ention" the sur-fac~ ~lzing of th~ paper web iB carri.ed out wlth agglutinized s~arch ` an~ disper~ed and/or ~oluble proteln from whea~ ltriticu~ vulgare) to whlch small ~i~uant~tie~ o~ ammonium persulfate can be added as ~n ~ :
oxidizlng ~gen~,~ me ammonlum peraul~a~ al80 reduces the Vis~CoBity : o~ the ~izin~ compo~itlon whil~ the whea protein tends to form a r~tlculated or skeletal structure which increases the ~inding force.
:25 ~ The agglutinated starch composlt~on formed from the wheat . i ~
18 applied to the paper wob and causQd to penetrate lby ~iziny press) he latter ~o that the flnlshed papor ha~ the follow~ng properties:
: ' _5_ -,, sur~ace weight tweight par unit ~rea): 128 g/m2 .. ~$~ing applicatlons 8 g/~2 burst pres~ure~ ar ~ C~T (flat buckllng ~trength accordlng to DI~ 53143)J 2~0 Denl~on tear ~tr~ngth~ 1 Ed~e buckl~n~ resi~tanc~ according ~o DI~
53149.5 23 kp~cm2.
. ~. .
. In anoth~r embodi~ent of t~e lnvent~on~ the aggluti~izati~on whlch ii3 a sitarch wheat compo~it~on i~ sprayed on the paper web and the paper then has thQ ~ollowing prop~rtieAs ~ur~ce weight: 132 gf~2 ~ ~izing appl~a~ion: 8 gfm~
~ . .
bursi~ presY~ro 3.6 ~ar C~ la~ buckllng ~tren~th according to 53143)s 190 Den~son teax ~trength~ 16 d~e bucXling r~ tanc~ according to DIN
5314gs 22 Xpfcm~.
`~ 20~ In both oi~.eb~ Yamp~ t~e ~ker content of the paper t~ ulp wa5 constitut~d ~xclu~lvely ~rom unsort~ s~rap paper and the lng~ WaL a ~ixtura:o~ water and ~round wheat aft~ a~glutlnlzatlon o~`~h~ starch in the:wh~at :and 8ub8equ~nt removal of the hull pieces ; by ~l~ting, the:~lxt~re bei~g rolled lnto or sprayad upon the paper ~25 web a~ described.
, , Accor~ting tG anoth~r a~p~3ct o~ the in~v~r~tioll ~ paper whlch C~n b~ used ~o p~odu~e corr~ atad pap~r ia mas~3 by c~ean1T~
unsorted And,~or ~oxted scxap paper to which c~llulos~ m~ be added (althouç~h th~ c~s~ary) ~ th~ f~brou# ma~ter b~3in~ co~in~3~
$ w~th wat~r ~n a pulp~r nnd t~an~oxm~d ~nto a~ a~u~ou~ susp~nsion whic~ d an~l c~ co~ ln~d with eluxiliary ~ t~ce~ u~din th~ pap~x lr~du~try a~ d abovo. 5~ re~ul~lny ~ash i~ ~orm~
¢ont~nuou~ly lnt~ ~ paper ~ an~ 1~ d~w~t~red9 p~ d ~ur~e slz~ accordanc~ w~th ~h~ lnYont$on~ aS,a then a~ter~xi~d to form lo a pa~cagl~lg p~r~ ~ccor~in~ ~o t~h~ ~w~ntlon~ th~ rap p~er or ol~ papar c~s~pon~n~ ca~t~ m7i~:~3 up to 98% ~nd ~ r r~c~er~d ~ro~ the #4 ~lng ad~t~v~ 2% by w~l~h~ or r~ e o~ the~ flb~r cc~n~Dnt o~ dry p2~P~ th~ ~zi~ con~i~ting o~ whea~ and/o~ drlod tul~r a~d/Qr ro~t ln ~lCh th~ ~ta~c~h conter~t has ~on part~ally o~ co~3ple~ely ~g~lu-tlna~ d r8*ai~L~ ~he ~rig~n~l di~p@rsod or solubla p~O~ rom ~: tb~ pl~s~ -~a~0~1~1. I!h~ applicat~on o~ the ~izln~ can ~e with o~
hou't ~ n~ lnto or on~o the3 pApor w~b ~nd~or ~y ~praylnS~.
c~lln~ l:o an ~xta~t f ~atura of th~ lnv~ntlon ~ com~er -whoa~ ~ al~aned~ a~l~o~!l wlth wat~r and iH Wt~t: mill*d to p~o-uc~ ~ mixtux~ whlch ~ ~ub~ctod at ~ ~uba~mosp}~ lc pr~ura to ~a, ~ a thermill-~echanical txoatm~nt ~o produc~ a ~nlxturo of .Ubl~ aqslutlnat~d B~:~Cb wlt~ ~E~t~ y 801u~1e~ par~ally d~6-~: :
r~ wh~at pro1:~in ~ro~ w~ch ~lb~ he hul~ o~ th~ wheat grai~ ~ re~o~d, e,,q~ parateel out by siiEtlng o~ Cen~ri~ugat~on.
25 ~ lxture 1~ ~t~ pll~t~ tO th~ sc:r~p p~ r ~teb in the a;s~ount and m~n~er p~oviouJly ~e~c~ib~fl. The ~lbrou~ whl~ i~ ~o~a~a~d .
.
.~s~7 ` ~ 3~
~rom the ~izing mixture 1s fed to the ~iber hull which consists primarily of g~olmd scrap paper fra~ments in suspension.
~ ~dvantageousl~7, ~rior to, during or after tl~e wet milling,0,5~ by weig}lt to 2~ by weight (pre~erably about 1,0~ by weight) am-S monium per~ulfate or ~no~her oxidizing agent i~ added to the ~izlng composltion to reduc~ it~ viscosity.
For example~ 100 kg of commexcial wheat a~ter cleaning to remov~ sand~ du~t and ~traw, i~ combined with a twenty-~old guz~tity of water in a ve55el pro~ided with an agitator and the re6ultin~ mix-ture i~ ed to a wheat-grinding mill. Prior to the wet milling, in order to reduce the viscosity ~which tends to ri3e upon subsequsnt agglutinization) 0.85 kg o~ ammonium persulfate i8 added. After the wet ~illing th~ mixture ia ~ubjected tD thermo-mechanical treatment by humplng 1~ at unlform speed ~nto a chamber at 1.6 bar gauge in whlch t~e mixture iB treated with ~team, The re~ulting mlxture of oluble agglutinated starch with wheat proteln, the ~tt~r partially soluble and partiall~ disp~r~ed~ is then ~ed to an oscillating sieve for ~emoval o~ tht3 fiber~ out 14. 3 kS~ o~ fiber lo re~40ved in hie mannex an~ i~ fed to the papex pulp. A~t~r applicatlon o~ the ~'` 20 ~l~zing mlxt~re th~ papor web is ~uhjeGted to pres~ure in a slzing pres~ in which lt i8 pa~ed ovar a plurality of steam heat drying ~llnders .
In wcordance wi~h another embodiment o~ the invention, comminuted taro root iB cleaned and w~t ~illed with water with the
2~: resulting mlxture belng thexmally treated at ~u~atmospheric pressure . .
~ith 3team tc~ produce ~ mixture containing soluble agglutlnated staxch and a disF,erslQn ~ solu~le component3 whic~h 18 removed, e.g.
. ' .
:~ -8-'
~ith 3team tc~ produce ~ mixture containing soluble agglutlnated staxch and a disF,erslQn ~ solu~le component3 whic~h 18 removed, e.g.
. ' .
:~ -8-'
3~
. ;
~y sitin~ of ce~trlfu~ation. The resul~i~g i~e~ co~ponents are BUpplie~d to th~ scxap pap~r co~?onent in the pulp~3r. T~se ags~lu~-nat;3d ~t~rch to~ th~r with t;~ t~ro ro~t pro~ein i6 ~plied to ~h~
paper web~, A mixtur~ equival~nt to that describ~d im~n0dlately a~ove S can thu~ be produced ~ 80 kg oi~ dried ~ommlnuted taro root. ~rom this cluantity ~bout 4X (corresponding to 3 .2 ~ ) o~ f~b~ous compo-nen~ is r~covered ~7y ~ifting and is Ruppll~d to the scrap paper ln 'c~se pulper ~o improve t~ pap~x ma~h. Th~3 re~ulting paper containx 8Z S~ o~ ~uch root componen~cs for ~a~h X~ of pape~.
The ~y~ten~ cf th~ present inventi~n ha~ t:hQ advantage t~at it prov~ds~ a paper for pacX~ purposes~ espec~ally for th~ produc-tion o~ corrugated pa~?~r~ i~ a ~impli~lRd p~5ce~3~ u~lng prlma~ily old or ~crap ~aper but with a ~lzing which 1~ relatlvely inexpe~lva nev~rthe~less pro~cinçl pa~?er whosQ prop~ 8 are exc~llent.
.. ..
.
he above and oth~r obJa~s~ ~atur~ and adva~t~
, tho pr~s~n~ lnu~ion will b~com~ mare r~adily ~par~n~ ~;com the ~Ql-~s~ lowlng ~ t1on~ x~eronC~ belng ~ldo to tho accompanylns~ ~!lrawln~
n ~
FIG. 1 1~ a ~iagramm~iC c~osa-soctlonal vicw illu~tratlng a pa~:~r ma~ ~n ac~ordance wi~h the pr~e~t invent~oI~ and FIa. 2 i3 a block dlagra~ illu~trat~n~ the proco88 o~ ~Q
~esent lh~re~tlon .
~5 As will ~e apparent ~rom ~IG. 1~ a paper she~t suita~le for convors~on lnto corru~a~ed paper~ basic~lly colapxi~es a scr~p .
: ' _9_ ' ,, , , . ~
3~ .
p~p~r ~ubs~rat~ 25 which cvnta~T-a s~r~p pap~r, r~idual ~ixture and paper addlSi~es a~ d~cr~b~, to which ~ ~uxfaco la~e~ 3 o~ ~lz~n~
1~ applle~. lhe sizing 3 can partia~ ly pene'Grate t~e subs~ra~e 1 a~ ~h~-~n, Th~ scra~ p~p~r col;~onent ¢asl COt~9~'C o~ u~ t~ 90~ by ~ ht o~ ~ha rnas~ c~ ~1Q~n~n~ ~ whlla th~ remalnaer ~ or 2~or~ by ~lght~, c~n h~ fi~er~ r~overed ~ro~ the raw mat~ria~ ~ro~n which th~
elz~ng i~ mad~ amd whlch i~ ~e~ in ~h0 pulpor to ~he pa~r ma ~
~g~ut~na,~ed ~arch in tha ~lzln~ pra~ent tos~ether wil:h dl~E~r~d lu~l~ prot~ln or~inally d~ivod $ro~ th~ plant m~terla~, na~
l~ rain, ~ t~er~ and~or root~ ~ slzlng 1~ ap3~ d by ~prayinS~ ~ rolllng.
In ~IG, 2 th~xo ~ sh~wn a h~pper 10 containinçt wh~at, a ho~spsr ~2 c~ g d~ taro root an~ a hopper 13 con~ainlnS~ dry potato~3, ~a~:h hopp~:r ha~n~ a ~n~.torlng outle'c 1.4~ lS or 16 ~eed~
,:
;15 1~ th~ ~pectl~ raw pl~ materla~ ~o a wet mlll 17 to whlch :: w~r ~3 a~lcd ~ r~p3:e~ent~ rhe w~t ra~lled pro~olll 18 au~_ ected ~t 1~ to 8~ 1~ asdJor c~ntrl~ugal separ~tion at ~ wlth ~
ibrou~ com~onen~t~ ~ln~ recov~red anO. fod~ tc~ ~ ~lper 21 ~uppli~d 1' ' ' ~
~; wi:th waSer at ~2~ ~cxap ~a~per ~t 23 a~a th~ al paper a~ditl~ at 20~ 2i~ er fead~aclc l~no i8 raprosen~0~1 at 25. me ~ r pulp 8 ~chèn~ aE~pllea to a ~on~inuoug ~cre~n a~ rep3~5ent~:d at 26 to fors3 a w~ w~ ub~ec~R~ to ~lewal:~ring at 27, ~i~inS~ a'c 28 with a ecov~re~ ~rosa ~ ¢paxation 9t~ 19 a~ 20 followlng aç~
tlna~on und~r ~t~a~ a~ su~atloosph~x~c: pre~uro a;t 2~ resul~
~5: : ~n~ psc~ t ~ b~ ~t r~rl~a a~ 30~ ~atur~lly~ a pa~r makln~ ata~
~: ~ ha~ bo~n ~llu~trat~o~ diagralamati~ally~ any cc~n~en~clonal paper ~ak-ln~ ma~h~ne~ Rlng us~d ~or ~hl~ purpos~. The ~p~cif~c examples o~
' : :
papers ma~o by ~he process hav~ ~een pres~l~t~d ~arl~er~
' .
, . ~ .
' ' _10~
'j7 ` ~(1 3~
It ha~ he~n found t~ be advanta~eous to carry out the a~1utination in an aqueous pl~ase of tht~ si~in~ composition before its app1i~at1On to the paper web at a temporature ~bo~e ab~ut 50~C, prefer~u~1y around 1~,~C and to ~ub~t th~ s~Arch ~o a partial d~-S compo~1tion.
~ .
.
. `: ` :
. :!
' ' :
` `~ ::: : : :
' :
' ` . ~:~ " ` :
:
. ;
~y sitin~ of ce~trlfu~ation. The resul~i~g i~e~ co~ponents are BUpplie~d to th~ scxap pap~r co~?onent in the pulp~3r. T~se ags~lu~-nat;3d ~t~rch to~ th~r with t;~ t~ro ro~t pro~ein i6 ~plied to ~h~
paper web~, A mixtur~ equival~nt to that describ~d im~n0dlately a~ove S can thu~ be produced ~ 80 kg oi~ dried ~ommlnuted taro root. ~rom this cluantity ~bout 4X (corresponding to 3 .2 ~ ) o~ f~b~ous compo-nen~ is r~covered ~7y ~ifting and is Ruppll~d to the scrap paper ln 'c~se pulper ~o improve t~ pap~x ma~h. Th~3 re~ulting paper containx 8Z S~ o~ ~uch root componen~cs for ~a~h X~ of pape~.
The ~y~ten~ cf th~ present inventi~n ha~ t:hQ advantage t~at it prov~ds~ a paper for pacX~ purposes~ espec~ally for th~ produc-tion o~ corrugated pa~?~r~ i~ a ~impli~lRd p~5ce~3~ u~lng prlma~ily old or ~crap ~aper but with a ~lzing which 1~ relatlvely inexpe~lva nev~rthe~less pro~cinçl pa~?er whosQ prop~ 8 are exc~llent.
.. ..
.
he above and oth~r obJa~s~ ~atur~ and adva~t~
, tho pr~s~n~ lnu~ion will b~com~ mare r~adily ~par~n~ ~;com the ~Ql-~s~ lowlng ~ t1on~ x~eronC~ belng ~ldo to tho accompanylns~ ~!lrawln~
n ~
FIG. 1 1~ a ~iagramm~iC c~osa-soctlonal vicw illu~tratlng a pa~:~r ma~ ~n ac~ordance wi~h the pr~e~t invent~oI~ and FIa. 2 i3 a block dlagra~ illu~trat~n~ the proco88 o~ ~Q
~esent lh~re~tlon .
~5 As will ~e apparent ~rom ~IG. 1~ a paper she~t suita~le for convors~on lnto corru~a~ed paper~ basic~lly colapxi~es a scr~p .
: ' _9_ ' ,, , , . ~
3~ .
p~p~r ~ubs~rat~ 25 which cvnta~T-a s~r~p pap~r, r~idual ~ixture and paper addlSi~es a~ d~cr~b~, to which ~ ~uxfaco la~e~ 3 o~ ~lz~n~
1~ applle~. lhe sizing 3 can partia~ ly pene'Grate t~e subs~ra~e 1 a~ ~h~-~n, Th~ scra~ p~p~r col;~onent ¢asl COt~9~'C o~ u~ t~ 90~ by ~ ht o~ ~ha rnas~ c~ ~1Q~n~n~ ~ whlla th~ remalnaer ~ or 2~or~ by ~lght~, c~n h~ fi~er~ r~overed ~ro~ the raw mat~ria~ ~ro~n which th~
elz~ng i~ mad~ amd whlch i~ ~e~ in ~h0 pulpor to ~he pa~r ma ~
~g~ut~na,~ed ~arch in tha ~lzln~ pra~ent tos~ether wil:h dl~E~r~d lu~l~ prot~ln or~inally d~ivod $ro~ th~ plant m~terla~, na~
l~ rain, ~ t~er~ and~or root~ ~ slzlng 1~ ap3~ d by ~prayinS~ ~ rolllng.
In ~IG, 2 th~xo ~ sh~wn a h~pper 10 containinçt wh~at, a ho~spsr ~2 c~ g d~ taro root an~ a hopper 13 con~ainlnS~ dry potato~3, ~a~:h hopp~:r ha~n~ a ~n~.torlng outle'c 1.4~ lS or 16 ~eed~
,:
;15 1~ th~ ~pectl~ raw pl~ materla~ ~o a wet mlll 17 to whlch :: w~r ~3 a~lcd ~ r~p3:e~ent~ rhe w~t ra~lled pro~olll 18 au~_ ected ~t 1~ to 8~ 1~ asdJor c~ntrl~ugal separ~tion at ~ wlth ~
ibrou~ com~onen~t~ ~ln~ recov~red anO. fod~ tc~ ~ ~lper 21 ~uppli~d 1' ' ' ~
~; wi:th waSer at ~2~ ~cxap ~a~per ~t 23 a~a th~ al paper a~ditl~ at 20~ 2i~ er fead~aclc l~no i8 raprosen~0~1 at 25. me ~ r pulp 8 ~chèn~ aE~pllea to a ~on~inuoug ~cre~n a~ rep3~5ent~:d at 26 to fors3 a w~ w~ ub~ec~R~ to ~lewal:~ring at 27, ~i~inS~ a'c 28 with a ecov~re~ ~rosa ~ ¢paxation 9t~ 19 a~ 20 followlng aç~
tlna~on und~r ~t~a~ a~ su~atloosph~x~c: pre~uro a;t 2~ resul~
~5: : ~n~ psc~ t ~ b~ ~t r~rl~a a~ 30~ ~atur~lly~ a pa~r makln~ ata~
~: ~ ha~ bo~n ~llu~trat~o~ diagralamati~ally~ any cc~n~en~clonal paper ~ak-ln~ ma~h~ne~ Rlng us~d ~or ~hl~ purpos~. The ~p~cif~c examples o~
' : :
papers ma~o by ~he process hav~ ~een pres~l~t~d ~arl~er~
' .
, . ~ .
' ' _10~
'j7 ` ~(1 3~
It ha~ he~n found t~ be advanta~eous to carry out the a~1utination in an aqueous pl~ase of tht~ si~in~ composition before its app1i~at1On to the paper web at a temporature ~bo~e ab~ut 50~C, prefer~u~1y around 1~,~C and to ~ub~t th~ s~Arch ~o a partial d~-S compo~1tion.
~ .
.
. `: ` :
. :!
' ' :
` `~ ::: : : :
' :
' ` . ~:~ " ` :
:
Claims (10)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A paper for packing purposes which consists of a layer of predominantly scrap paper fibers comprising up to 98%
of the total fiber content and a coating of a sizing comprising at least 2% of the total fiber content and consisting of agglu-tinated starch from the class consisting of grain, tubers and roots together with soluble or dispersed protein therefrom.
of the total fiber content and a coating of a sizing comprising at least 2% of the total fiber content and consisting of agglu-tinated starch from the class consisting of grain, tubers and roots together with soluble or dispersed protein therefrom.
2. The paper defined in claim 1 wherein the coating derives from commercial wheat and contains ammonium persulfate.
3. The paper defined in claim 1 having the following physical properties:
surface weight: 128 g/m2 sizing application: 8 g/m2 burst pressure: 4.1 bar CMT (flat buckling-strength according to DIN 53 143) 280 Denison tear strength: 12 Edge buckling resistance according to DIN 53 149 23 kp/cm2
surface weight: 128 g/m2 sizing application: 8 g/m2 burst pressure: 4.1 bar CMT (flat buckling-strength according to DIN 53 143) 280 Denison tear strength: 12 Edge buckling resistance according to DIN 53 149 23 kp/cm2
4. The paper defined in claim 1 wherein said coating is sprayed onto said layer and which has the following properties:
surface weight: 132 g/m2 sizing application: 13 g/m2 burst pressure: 3.6 bar CMT (flat buckling strength according to DIN 53 143) 190 Denison tear strength: 12 Edge buckling resistance according to DIN 53 149 22 kp/cm2
surface weight: 132 g/m2 sizing application: 13 g/m2 burst pressure: 3.6 bar CMT (flat buckling strength according to DIN 53 143) 190 Denison tear strength: 12 Edge buckling resistance according to DIN 53 149 22 kp/cm2
5. A method of making a paper for packing purposes which comprises the steps of:
(a) pulping a fiber mass in water to form a paper mass;
(b) continuously forming a web from said mash, de-watering said web and drying said web;
(c) comminuting a plant material selected from the group which consists of grain, dried tubers and roots and con-taining starch and protein in water to form a sizing composition in which fibers of the plant material are contained;
(d) removing the fibers from said plant material from the sizing produced in step (c) and feeding said fibers to step (a) for admixture with scrap paper therein so that the fiber content of said web contains up to 98% by weight scrap paper and at least 2% by weight of the fibers removed in step (d); and (e) applying said sizing to said web prior to the drying thereof.
(a) pulping a fiber mass in water to form a paper mass;
(b) continuously forming a web from said mash, de-watering said web and drying said web;
(c) comminuting a plant material selected from the group which consists of grain, dried tubers and roots and con-taining starch and protein in water to form a sizing composition in which fibers of the plant material are contained;
(d) removing the fibers from said plant material from the sizing produced in step (c) and feeding said fibers to step (a) for admixture with scrap paper therein so that the fiber content of said web contains up to 98% by weight scrap paper and at least 2% by weight of the fibers removed in step (d); and (e) applying said sizing to said web prior to the drying thereof.
6. The method defined in claim 5 wherein grain of commer-cial quality is agitated with water, wet milled and treated with steam at superatmospheric pressure to agglutinate the starch from the grain and form the sizing with partially dispersed and partially solubilized grain protein.
7. The method defined in claim 6 wherein the agglutina-tion is effected at a temperature of 50°C.
8. The method defined in claim 6 wherein the starch, subsequent to agglutination and before application to the paper web is partially decomposed.
9. The method defined in claim 6, further comprising the step of adding ammonium persulfate in an amount of 0.5% to 2.0% by weight to the sizing after the wet milling and prior to the treatment thereof with steam.
10. The method defined in claim 5 wherein comminuted taro root or manioc is cleaned and wet milled with water and the wet milled product is treated at superatmospheric pressure with steam to produce said sizing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2833452A DE2833452C2 (en) | 1978-07-29 | 1978-07-29 | Process for the manufacture of paper for packaging purposes, in particular for the manufacture of corrugated cardboard |
| DEP2833452.3-45 | 1978-07-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1103968A true CA1103968A (en) | 1981-06-30 |
Family
ID=6045789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA332,399A Expired CA1103968A (en) | 1978-07-29 | 1979-07-24 | Packing paper and method of making same |
Country Status (12)
| Country | Link |
|---|---|
| JP (1) | JPS5522095A (en) |
| AT (1) | ATA473279A (en) |
| AU (1) | AU4899279A (en) |
| CA (1) | CA1103968A (en) |
| DE (1) | DE2833452C2 (en) |
| DK (1) | DK317779A (en) |
| FR (1) | FR2433613A1 (en) |
| GB (1) | GB2026571B (en) |
| IT (1) | IT1122187B (en) |
| NL (1) | NL7905703A (en) |
| SE (1) | SE7906280L (en) |
| SU (1) | SU931113A3 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS626997A (en) * | 1985-06-29 | 1987-01-13 | 神崎製紙株式会社 | Production of paper |
| AU629739B2 (en) * | 1990-03-20 | 1992-10-08 | Green Bay Packaging Inc. | Multiple ply paperboard product and method of making the same |
| US5055161A (en) * | 1991-02-21 | 1991-10-08 | Green Bay Packaging Inc. | Multiple ply paper product containing an outer ply of reclaimed white office waste |
| US5061345A (en) * | 1991-02-21 | 1991-10-29 | Green Bay Packaging Inc. | Method of making a multiple ply paper product containing an outer ply of reclaimed white office waste |
| CA2061338A1 (en) * | 1991-02-21 | 1992-08-22 | Roger P. Hoffman | Multiple ply paper product containing and outer ply of reclaimed white office waste and method of making the product |
| GB9307545D0 (en) * | 1993-04-13 | 1993-06-02 | British United Shoe Machinery | Carrier strap for a container |
| DE4344139C2 (en) * | 1993-12-23 | 1997-08-07 | Inst Getreideverarbeitung | Process for the production of paper, cardboard and cardboard with improved performance properties |
| DE19530917A1 (en) * | 1995-08-23 | 1997-02-27 | Verena Wolff | Wallpaper paste |
| FI108241B (en) * | 2000-08-10 | 2001-12-14 | Metso Paper Inc | Process for the manufacture of coated fiber web, improved paper or paperboard machine and coated paper or paperboard |
| WO2004083324A1 (en) * | 2003-03-21 | 2004-09-30 | George Weston Foods Limited | Coating compositions |
| FI124202B (en) | 2012-02-22 | 2014-04-30 | Kemira Oyj | Process for improvement of recycled fiber material utilizing the manufacturing process of paper or paperboard |
| CN104099799B (en) * | 2014-07-02 | 2016-05-25 | 福建希源纸业有限公司 | A kind of pulping method that utilizes waster paper slag to produce slim vulcan fibre |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE370421C (en) * | 1920-06-23 | 1923-03-02 | Verwertung Inlaendischer Produ | Process for making paper |
| GB1282551A (en) * | 1968-06-04 | 1972-07-19 | Saloman Neumann | A process for the manufacture of sheet material |
| US3859108A (en) * | 1971-05-07 | 1975-01-07 | Lawrence Paper Co | Flour based paper size |
| US3808089A (en) * | 1971-08-17 | 1974-04-30 | Wright Chem Corp | Process and composition for manufacturing top liner and the like from printed and coated stock |
| GB1423253A (en) * | 1972-05-17 | 1976-02-04 | Isovolta | Process for the manufacture of a paper fluting or cardboard and products manufactured by the process |
| CH566445A5 (en) * | 1974-01-31 | 1975-09-15 | Bonda Ernst | Re-using waste-paper cellulose - for printed or unprinted wrapping-material, e.g. letter-envelopes |
-
1978
- 1978-07-29 DE DE2833452A patent/DE2833452C2/en not_active Expired
-
1979
- 1979-07-06 AT AT0473279A patent/ATA473279A/en not_active Application Discontinuation
- 1979-07-09 GB GB7923900A patent/GB2026571B/en not_active Expired
- 1979-07-16 IT IT24367/79A patent/IT1122187B/en active
- 1979-07-17 AU AU48992/79A patent/AU4899279A/en not_active Abandoned
- 1979-07-23 SE SE7906280A patent/SE7906280L/en not_active Application Discontinuation
- 1979-07-24 CA CA332,399A patent/CA1103968A/en not_active Expired
- 1979-07-24 NL NL7905703A patent/NL7905703A/en not_active Application Discontinuation
- 1979-07-26 SU SU792790404A patent/SU931113A3/en active
- 1979-07-27 FR FR7919484A patent/FR2433613A1/en active Granted
- 1979-07-27 DK DK317779A patent/DK317779A/en not_active Application Discontinuation
- 1979-07-28 JP JP9560179A patent/JPS5522095A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL7905703A (en) | 1980-01-31 |
| DK317779A (en) | 1980-01-30 |
| DE2833452C2 (en) | 1982-03-11 |
| DE2833452A1 (en) | 1980-02-07 |
| SE7906280L (en) | 1980-01-30 |
| FR2433613B3 (en) | 1981-06-12 |
| GB2026571B (en) | 1983-06-15 |
| SU931113A3 (en) | 1982-05-23 |
| IT1122187B (en) | 1986-04-23 |
| AU4899279A (en) | 1980-01-31 |
| ATA473279A (en) | 1983-09-15 |
| IT7924367A0 (en) | 1979-07-16 |
| FR2433613A1 (en) | 1980-03-14 |
| JPS5522095A (en) | 1980-02-16 |
| GB2026571A (en) | 1980-02-06 |
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