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1. 发明公开

EP0805232A3 A method for preparing a blade-coated paper and a blade-coated paper product 失效
标题翻译：一种用于生产纸张和由此制造的产品Streichbeschichtetem过程
公开(公告)号：EP0805232A3
公开(公告)日：1998-11-11
申请号：EP97110284
申请日：1993-04-01
申请人： WESTVACO CORP
发明人： HANK MARK ALAN , PETERSON RALPH SCOTT , MULCAHY LEO THOMAS , STREISEL ROBERT CHARLES
IPC分类号： D21C5/02 , D21B1/32 , D21D5/00 , D21H11/14 , D21H19/40 , D21H25/10 , D21H27/16
CPC分类号： D21B1/32 , D21H11/14 , D21H19/40 , D21H25/10 , D21H27/16 , Y02W30/646
摘要： The invention describes a method for preparing a blade-coated paper having less than 20 ppm per unit area solid, non-fibrous contaminants of size greater than 0.3 mm
2 , and including at least 5% by weight recycled paper, comprising the steps of:

a) combining a quantity of paper to be recycled, containing lignin, cellulosic fibers and solid non-fibrous contaminants, with aqueous liquid to form a slurry containing about 9-15% by weight solids and agitating in a low shear mixer at a temperature less than 65.5°C for a time sufficient to separate said lignin fibers from said solid contaminants without significantly degrading said solid contaminants, and then sequentially,
b) removing from said slurry gross contaminants of a size in a range greater than about 5 mm by passing through holes of a predetermined diameter;
c) removing from the slurry contaminants of specific gravity in a range greater than 1;
d) removing from the slurry intermediate contaminants having a size in a range greater than about 2 to 3 mm by passing the slurry through holes of a predetermined size,
e) removing sand from the slurry,
f) removing from the slurry fine contaminants of a size in a range greater than about 0.15 mm, by passing the slurry through elongated slots of predetermined width,
g) removing from the slurry contaminants with a specific gravity less than 1,
h) dewatering the slurry to form a wet friable pulp having a water content of about 30-60%,
i) digesting said pulp in a cooking liquor for a time and at a temperature sufficient to hydrolyze a substantial portion of the lignin remaining in intimate association with said pulp,
j) separating said digested pulp from spent cooking liquor,
k) preparing paper from said separated pulp, and
l) coating said paper with a clay containing coating using a blade to regulate coating weight.

2. 发明公开

EP0805231A3 A method for preparing paper and a paper product 失效
标题翻译：一种用于生产纸张和与其纸张制备过程
公开(公告)号：EP0805231A3
公开(公告)日：1998-11-11
申请号：EP97110283
申请日：1993-04-01
申请人： WESTVACO CORP
发明人： HANK MARK ALAN , PETERSON RALPH SCOTT , MULCAHY LEO THOMAS , STREISEL ROBERT CHARLES
IPC分类号： D21C5/02 , D21B1/32 , D21D5/00 , D21H11/14 , D21H19/40 , D21H25/10 , D21H27/16
CPC分类号： D21B1/32 , D21H11/14 , D21H19/40 , D21H25/10 , D21H27/16 , Y02W30/646
摘要： The invention provides a method for preparing a paper having less than 20 ppm per unit area solid, non-fibrous contaminants of size greater than 0.3 mm
2 , and including at least 5% by weight recycled paper, comprising the steps of:

a) combining a quantity of paper to be recycled, containing lignin, cellulosic fibers and solid non-fibrous contaminants, with aqueous liquid to form a slurry containing about 9-15% by weight solids and agitating in a low shear mixer at a temperature less than 65.5°C for a time sufficient to separate said lignin fibers from said solid contaminants without significantly degrading said solid contaminants, and then sequentially,
b) removing from said slurry gross contaminants of a size in a range greater than about 5 mm by passing through holes of a predetermined diameter;
c) removing from the slurry contaminants of specific gravity in a range greater than 1;
d) removing from the slurry intermediate contaminants having a size in a range greater than about 2 to 3 mm by passing the slurry through holes of a predetermined size,
e) removing sand from the slurry,
f) removing from the slurry fine contaminants of a size in a range greater than about 0.15 mm, by passing the slurry through elongated slots of predetermined width,
g) removing from the slurry contaminants with a specific gravity less than 1,
h) dewatering the slurry to form a wet friable pulp,
i) digesting said pulp in a cooking liquor for a time and at a temperature sufficient to hydrolyze a substantial portion of the lignin remaining in intimate association with said pulp,
j) separating said digested pulp from spent cooking liquor, and
k) preparing paper from said separated pulp.

3. 发明专利

BR9301444A 未知
公开(公告)号：BR9301444A
公开(公告)日：1993-10-13
申请号：BR9301444
申请日：1993-04-05
申请人： WESTVACO CORP
发明人： HANK MARK ALAN , MULCAHY LEO THOMAS , PETERSON RALPH SCOTT , STREISEL ROBERT CHARLES
IPC分类号： D21C5/02 , D21B1/32 , D21D5/00 , D21H11/14 , D21H19/40 , D21H25/10 , D21H27/16
摘要： The invention describes a method for preparing a blade-coated paper having less than 20 ppm per unit area solid, non-fibrous contaminants of size greater than 0.3 mm 2 , and including at least 5% by weight recycled paper, comprising the steps of:a) combining a quantity of paper to be recycled, containing lignin, cellulosic fibers and solid non-fibrous contaminants, with aqueous liquid to form a slurry containing about 9-15% by weight solids and agitating in a low shear mixer at a temperature less than 65.5°C for a time sufficient to separate said lignin fibers from said solid contaminants without significantly degrading said solid contaminants, and then sequentially,b) removing from said slurry gross contaminants of a size in a range greater than about 5 mm by passing through holes of a predetermined diameter;c) removing from the slurry contaminants of specific gravity in a range greater than 1;d) removing from the slurry intermediate contaminants having a size in a range greater than about 2 to 3 mm by passing the slurry through holes of a predetermined size,e) removing sand from the slurry,f) removing from the slurry fine contaminants of a size in a range greater than about 0.15 mm, by passing the slurry through elongated slots of predetermined width,g) removing from the slurry contaminants with a specific gravity less than 1,h) dewatering the slurry to form a wet friable pulp having a water content of about 30-60%,i) digesting said pulp in a cooking liquor for a time and at a temperature sufficient to hydrolyze a substantial portion of the lignin remaining in intimate association with said pulp,j) separating said digested pulp from spent cooking liquor,k) preparing paper from said separated pulp, andl) coating said paper with a clay containing coating using a blade to regulate coating weight.

4. 发明专利

FI931525A0 未知
公开(公告)号：FI931525A0
公开(公告)日：1993-04-05
申请号：FI931525
申请日：1993-04-05
申请人： WESTVACO CORP
发明人： HANK MARK ALAN , MULCAHY LEO THOMAS , PETERSON RALPH SCOTT , STREISEL ROBERT CHARLES
IPC分类号： D21C5/02 , D21B1/32 , D21D5/00 , D21H11/14 , D21H19/40 , D21H25/10 , D21H27/16
摘要： The invention describes a method for preparing a blade-coated paper having less than 20 ppm per unit area solid, non-fibrous contaminants of size greater than 0.3 mm 2 , and including at least 5% by weight recycled paper, comprising the steps of:a) combining a quantity of paper to be recycled, containing lignin, cellulosic fibers and solid non-fibrous contaminants, with aqueous liquid to form a slurry containing about 9-15% by weight solids and agitating in a low shear mixer at a temperature less than 65.5°C for a time sufficient to separate said lignin fibers from said solid contaminants without significantly degrading said solid contaminants, and then sequentially,b) removing from said slurry gross contaminants of a size in a range greater than about 5 mm by passing through holes of a predetermined diameter;c) removing from the slurry contaminants of specific gravity in a range greater than 1;d) removing from the slurry intermediate contaminants having a size in a range greater than about 2 to 3 mm by passing the slurry through holes of a predetermined size,e) removing sand from the slurry,f) removing from the slurry fine contaminants of a size in a range greater than about 0.15 mm, by passing the slurry through elongated slots of predetermined width,g) removing from the slurry contaminants with a specific gravity less than 1,h) dewatering the slurry to form a wet friable pulp having a water content of about 30-60%,i) digesting said pulp in a cooking liquor for a time and at a temperature sufficient to hydrolyze a substantial portion of the lignin remaining in intimate association with said pulp,j) separating said digested pulp from spent cooking liquor,k) preparing paper from said separated pulp, andl) coating said paper with a clay containing coating using a blade to regulate coating weight.

5. 发明专利

FI110876B 未知
公开(公告)号：FI110876B
公开(公告)日：2003-04-15
申请号：FI931525
申请日：1993-04-05
申请人： WESTVACO CORP
发明人： HANK MARK ALAN , MULCAHY LEO THOMAS , PETERSON RALPH SCOTT , STREISEL ROBERT CHARLES
IPC分类号： D21B1/32 , D21C5/02 , D21D5/00 , D21H11/14 , D21H19/40 , D21H25/10 , D21H27/16
摘要： The invention describes a method for preparing a blade-coated paper having less than 20 ppm per unit area solid, non-fibrous contaminants of size greater than 0.3 mm 2 , and including at least 5% by weight recycled paper, comprising the steps of:a) combining a quantity of paper to be recycled, containing lignin, cellulosic fibers and solid non-fibrous contaminants, with aqueous liquid to form a slurry containing about 9-15% by weight solids and agitating in a low shear mixer at a temperature less than 65.5°C for a time sufficient to separate said lignin fibers from said solid contaminants without significantly degrading said solid contaminants, and then sequentially,b) removing from said slurry gross contaminants of a size in a range greater than about 5 mm by passing through holes of a predetermined diameter;c) removing from the slurry contaminants of specific gravity in a range greater than 1;d) removing from the slurry intermediate contaminants having a size in a range greater than about 2 to 3 mm by passing the slurry through holes of a predetermined size,e) removing sand from the slurry,f) removing from the slurry fine contaminants of a size in a range greater than about 0.15 mm, by passing the slurry through elongated slots of predetermined width,g) removing from the slurry contaminants with a specific gravity less than 1,h) dewatering the slurry to form a wet friable pulp having a water content of about 30-60%,i) digesting said pulp in a cooking liquor for a time and at a temperature sufficient to hydrolyze a substantial portion of the lignin remaining in intimate association with said pulp,j) separating said digested pulp from spent cooking liquor,k) preparing paper from said separated pulp, andl) coating said paper with a clay containing coating using a blade to regulate coating weight.

6. 发明专利

HK1006120A1 Method for producing a delignified papermaking fiber from recycled high lignin content waste paper and product thereof 未知
公开(公告)号：HK1006120A1
公开(公告)日：1999-02-12
申请号：HK98105360
申请日：1998-06-16
申请人： WESTVACO CORP
发明人： HANK MARK ALAN , MULCAHY LEO THOMAS , PETERSON RALPH SCOTT , STREISEL ROBERT CHARLES
IPC分类号： D21B1/32 , D21C5/02 , D21D5/00 , D21H11/14 , D21H19/40 , D21H25/10 , D21H27/16 , D21B
摘要： The invention describes a method for preparing a blade-coated paper having less than 20 ppm per unit area solid, non-fibrous contaminants of size greater than 0.3 mm 2 , and including at least 5% by weight recycled paper, comprising the steps of:a) combining a quantity of paper to be recycled, containing lignin, cellulosic fibers and solid non-fibrous contaminants, with aqueous liquid to form a slurry containing about 9-15% by weight solids and agitating in a low shear mixer at a temperature less than 65.5°C for a time sufficient to separate said lignin fibers from said solid contaminants without significantly degrading said solid contaminants, and then sequentially,b) removing from said slurry gross contaminants of a size in a range greater than about 5 mm by passing through holes of a predetermined diameter;c) removing from the slurry contaminants of specific gravity in a range greater than 1;d) removing from the slurry intermediate contaminants having a size in a range greater than about 2 to 3 mm by passing the slurry through holes of a predetermined size,e) removing sand from the slurry,f) removing from the slurry fine contaminants of a size in a range greater than about 0.15 mm, by passing the slurry through elongated slots of predetermined width,g) removing from the slurry contaminants with a specific gravity less than 1,h) dewatering the slurry to form a wet friable pulp having a water content of about 30-60%,i) digesting said pulp in a cooking liquor for a time and at a temperature sufficient to hydrolyze a substantial portion of the lignin remaining in intimate association with said pulp,j) separating said digested pulp from spent cooking liquor,k) preparing paper from said separated pulp, andl) coating said paper with a clay containing coating using a blade to regulate coating weight.

7. 发明专利

ES2114000T3 未知
公开(公告)号：ES2114000T3
公开(公告)日：1998-05-16
申请号：ES93302577
申请日：1993-04-01
申请人： WESTVACO CORP
发明人： HANK MARK ALAN , MULCAHY LEO THOMAS , PETERSON RALPH SCOTT , STREISEL ROBERT CHARLES
IPC分类号： D21B1/32 , D21D5/00 , D21H11/14 , D21C5/02 , D21H19/40 , D21H25/10 , D21H27/16 , D21B1/02
摘要： The invention describes a method for preparing a blade-coated paper having less than 20 ppm per unit area solid, non-fibrous contaminants of size greater than 0.3 mm 2 , and including at least 5% by weight recycled paper, comprising the steps of:a) combining a quantity of paper to be recycled, containing lignin, cellulosic fibers and solid non-fibrous contaminants, with aqueous liquid to form a slurry containing about 9-15% by weight solids and agitating in a low shear mixer at a temperature less than 65.5°C for a time sufficient to separate said lignin fibers from said solid contaminants without significantly degrading said solid contaminants, and then sequentially,b) removing from said slurry gross contaminants of a size in a range greater than about 5 mm by passing through holes of a predetermined diameter;c) removing from the slurry contaminants of specific gravity in a range greater than 1;d) removing from the slurry intermediate contaminants having a size in a range greater than about 2 to 3 mm by passing the slurry through holes of a predetermined size,e) removing sand from the slurry,f) removing from the slurry fine contaminants of a size in a range greater than about 0.15 mm, by passing the slurry through elongated slots of predetermined width,g) removing from the slurry contaminants with a specific gravity less than 1,h) dewatering the slurry to form a wet friable pulp having a water content of about 30-60%,i) digesting said pulp in a cooking liquor for a time and at a temperature sufficient to hydrolyze a substantial portion of the lignin remaining in intimate association with said pulp,j) separating said digested pulp from spent cooking liquor,k) preparing paper from said separated pulp, andl) coating said paper with a clay containing coating using a blade to regulate coating weight.

8. 发明专利

DE69316070D1 未知
公开(公告)号：DE69316070D1
公开(公告)日：1998-02-12
申请号：DE69316070
申请日：1993-04-01
申请人： WESTVACO CORP
发明人： HANK MARK ALAN , MULCAHY LEO THOMAS , PETERSON RALPH SCOTT , STREISEL ROBERT CHARLES
IPC分类号： D21B1/32 , D21D5/00 , D21C5/02 , D21H11/14 , D21H19/40 , D21H25/10 , D21H27/16 , D21B1/02
摘要： The invention describes a method for preparing a blade-coated paper having less than 20 ppm per unit area solid, non-fibrous contaminants of size greater than 0.3 mm 2 , and including at least 5% by weight recycled paper, comprising the steps of:a) combining a quantity of paper to be recycled, containing lignin, cellulosic fibers and solid non-fibrous contaminants, with aqueous liquid to form a slurry containing about 9-15% by weight solids and agitating in a low shear mixer at a temperature less than 65.5°C for a time sufficient to separate said lignin fibers from said solid contaminants without significantly degrading said solid contaminants, and then sequentially,b) removing from said slurry gross contaminants of a size in a range greater than about 5 mm by passing through holes of a predetermined diameter;c) removing from the slurry contaminants of specific gravity in a range greater than 1;d) removing from the slurry intermediate contaminants having a size in a range greater than about 2 to 3 mm by passing the slurry through holes of a predetermined size,e) removing sand from the slurry,f) removing from the slurry fine contaminants of a size in a range greater than about 0.15 mm, by passing the slurry through elongated slots of predetermined width,g) removing from the slurry contaminants with a specific gravity less than 1,h) dewatering the slurry to form a wet friable pulp having a water content of about 30-60%,i) digesting said pulp in a cooking liquor for a time and at a temperature sufficient to hydrolyze a substantial portion of the lignin remaining in intimate association with said pulp,j) separating said digested pulp from spent cooking liquor,k) preparing paper from said separated pulp, andl) coating said paper with a clay containing coating using a blade to regulate coating weight.

9. 发明专利

CA2234143A1 BLADE-COATED PAPER AND METHOD OF PREPARATION THEREOF 未知
公开(公告)号：CA2234143A1
公开(公告)日：1993-10-07
申请号：CA2234143
申请日：1993-04-02
申请人： WESTVACO CORP
发明人： STREISEL ROBERT CHARLES , PETERSON RALPH SCOTT , MULCAHY LEO THOMAS , HANK MARK ALAN
IPC分类号： D21C5/02 , D21B1/32 , D21D5/00 , D21H11/14 , D21H19/40 , D21H25/10 , D21H27/16 , D21C3/00 , D21C9/00
摘要： A method is disclosed for producing, in a continuous throughput, high quality paper from recycled waste paper utilizing high consistency, low shear pulping, followed by a series of cleaning steps to produce a wet, friable pulp which is digested and optionally bleached. The resulting pulp can be run on a paper machine alone or blended with virgin pulp to produce a paper containing at least 5% by weight recycled paper with less than 20 ppm per unit area solid non-fibrous contaminants larger than 0.3 mm2, and which may be blade coated on a high speed paper machine.

10. 发明专利

ZA9302300B Method for producing a delignigied papermaking fiber from recycled, high lignin content, waste paper and product thereof 未知
公开(公告)号：ZA9302300B
公开(公告)日：1993-10-18
申请号：ZA9302300
申请日：1993-03-31
申请人： WESTVACO CORP
发明人： HANK MARK ALAN , MULCAHY LEO THOMAS , PETERSON RALPH SCOTT , STREISEL ROBERT CHARLES
IPC分类号： D21C20060101 , D21D20060101 , D21C , D21D

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