GB1603547A - Creación de Inventos y Patentes con Inteligencia Artificial

GB1603547A – Blanket for the production of extensible paper
– Google Patents

GB1603547A – Blanket for the production of extensible paper
– Google Patents
Blanket for the production of extensible paper

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Publication number
GB1603547A

GB1603547A
GB20393/78A
GB2039378A
GB1603547A
GB 1603547 A
GB1603547 A
GB 1603547A
GB 20393/78 A
GB20393/78 A
GB 20393/78A
GB 2039378 A
GB2039378 A
GB 2039378A
GB 1603547 A
GB1603547 A
GB 1603547A
Authority
GB
United Kingdom
Prior art keywords
blanket
cords
plies
ply
laterally
Prior art date
1978-05-18
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

Application number
GB20393/78A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Beloit Corp

Original Assignee
Beloit Corp
Priority date (The priority date 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 date listed.)
1978-05-18
Filing date
1978-05-18
Publication date
1981-11-25

1978-05-18
Application filed by Beloit Corp
filed
Critical
Beloit Corp

1978-05-18
Priority to GB20393/78A
priority
Critical
patent/GB1603547A/en

1978-06-19
Priority to JP7405478A
priority
patent/JPS54151609A/en

1978-07-21
Priority to DE2832054A
priority
patent/DE2832054C2/en

1981-11-25
Publication of GB1603547A
publication
Critical
patent/GB1603547A/en

Status
Expired
legal-status
Critical
Current

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Espacenet

Global Dossier

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Classifications

D—TEXTILES; PAPER

D21—PAPER-MAKING; PRODUCTION OF CELLULOSE

D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON

D21F3/00—Press section of machines for making continuous webs of paper

D21F3/02—Wet presses

D21F3/0209—Wet presses with extended press nip

D21F3/0218—Shoe presses

D21F3/0227—Belts or sleeves therefor

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

B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts

B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed

B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer

B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary

D—TEXTILES; PAPER

D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR

D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS

D06C21/00—Shrinking by compressing

D06C21/005—Compacting belts

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

D21H25/00—After-treatment of paper not provided for in groups D21H17/00 – D21H23/00

D21H25/005—Mechanical treatment

D—TEXTILES; PAPER

D21—PAPER-MAKING; PRODUCTION OF CELLULOSE

D21H5/00—Special paper or cardboard not otherwise provided for

D21H5/24—Special paper or cardboard not otherwise provided for having enhanced flexibility or extensibility produced by mechanical treatment of the unfinished paper

D21H5/245—Special paper or cardboard not otherwise provided for having enhanced flexibility or extensibility produced by mechanical treatment of the unfinished paper obtained by compressing the (moist) paper in directions lying in, and optionally perpendicular to, the paper plane, e.g. plain-surfaced Clupak papers

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

B32B2305/00—Condition, form or state of the layers or laminate

B32B2305/08—Reinforcements

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

B32B2433/00—Closed loop articles

Description

(54) IMPROVED BLANKET FOR THE PRODUCTION OF EXTENSIBLE PAPER
(71) We, BELOIT CORPORATION, a corporation organised and existing under the laws of the State of Wisconsin, United States of America, of Beloit, Wisconsin 53511,
United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- The present invention relates to a flexible endless belt, known as a «blanket», for use in the manufacture of extensible webs of paper or textile material.
In one known method of making such extensible webs, a flexible endless blanket is trained about a plurality of pulleys or rolls.
The blanket is trained about one pulley and then passes through a nip formed with a second pulley. Upon exiting from the nip, the belt is reversely flexed about the second pulley. The web to be longitudinally compressed is applied to the outer surface of the flexible blanket as it passes over the first pulley. The decrease in length of the outer surface of the blanket as it passes through the compression nip and changes direction of curvature causes the web to be foreshortened. This high flexure and particularly the compression of the blanket in the nip can eventually cause the blanket to fail.
It is an object, therefore, of this invention to provide a flexible endless blanket for use in such machines which will have good resistance to failure or separation of the components.
According to the invention there is provided a flexible endless blanket of elastomeric material, for use in apparatus for longitudinally compressing a web, and comprising first and third plies of material extending circumferentially through said blanket and having reinforcing cords embedded therein, the cords extending transversely across said blanket, and a second ply of material sandwiched between said first and third plies and having reinforcing cords embedded therein, the cords in said second ply extending circumferentially with respect to said blanket and being completely encased between said first and third plies with the laterally outermost cords in said second ply being disposed laterally inwardly with respect to the end of the cords in said first and third plies, and all three plies being disposed within the lower 25% of the blanket.
The following is a more detailed description of one embodiment of the invention, reference being made to the accompanying drawings in which:
Figure 1 is a schematic elevational view of portions of an apparatus for longitudinally compressing webs;
Figure 2 is a fragmentary sectional view taken substantially along line 2-2 of Figure 1 and illustrating a prior art blanket;
Figure 3 is a fragmentary sectional view of the prior art blanket of Figure 3 taken substantially along line 3-3 of Figure 2;
Figure 4 is a view similar to that in Figure 2, but showing the prior art blanket in its compressed configuration; and
Figures 5, 6 and 7 are similar respectively to Figures 2, 3 and 4, but illustrating a blanket in accordance with the present invention.
Figure 1 shows an apparatus 10 for longitudinally compressing a web of material The apparatus 10 includes a flexible endless belt 12 which is trained about first, second, third and fourth pulleys 14, 16, 18 and 20, respectively. The belt 12 is known to those in the limited field of making extensible webs as a «blanket» and will, therefore, be referred to as the blanket 12 hereinafter.
The third pulley 18 is disposed adjacent the pulley 14 to provide a compression nip 22 through which the blanket 12 passes. The first, third and fourth pulleys are arranged such that the blanket 12 passes about these pulleys in serpentine fashion. The fourth pulley 20 is spaced from the third pulley 18 so that there is no compression nip therebetween. It will be appreciated that the fourth pulley 20 could be eliminated and the second pulley 16 made larger in diameter, thus providing a serpentine path for the blanket 12, but utilising only three pulleys.
A web of material 24, such as paper or textile, is applied to the outer surface 28 of the blanket 12 as it enters the nip 22. The web of material 24 passes about the third pulley 18 and exits at 26. The blanket 12 is provided with an inextensible reinforcing structure 13 and is tightly trained about the pulleys 14, 16, 18 and 20. The outer surface 28 of the blanket 12 will, therefore, be stretched in the machine direction or circumferentially as its wraps about the first pulley 14. The stretching of the outer surface 28 will be increased by the nipping or Venturi effect of the constriction ofthe thickness ofthe belt.
In.the same manner, the outer surface 28 of the belt 12 will be compressed as it reverses curvature passing about the third pulley 18.
Thus, a web applied to the outer surface 28 of the blanket 12 in the stretched condition as it enters nip 22 will be foreshortened as it passes through the nip 22 between the rolls 14 and 18 and changes directions of curvature as described above.
With reference to Figures 2, 3 and 4, there is illustrated a common prior art structure for such a blanket 12. The reinforcing structure 13 includes two plies 30 and 32 of cord or cord reinforced fabric. The structure 13 is disposed closely adjacent the bottom side 34 of the blanket 12. For purposes of this invention, the bottom or lower side 34 of the blanket 12 will be that side of the blanket 12 which is closest to the first pulley 14, i.e. the pulley about which the blanket 12 is trained when the fabric or web 24 is first applied to the belt.
As is customary in prior art blanket structures, the first ply 30 has its reinforcing cords extending transversely or from side to side with respect to the blanket 12. The second ply 32 has its cords extending circumferentially or in the machine direction. These cords can be applied by helically winding a single cord or helically winding a band of several cords. In any event, it will be appreciated that prior art structures provide for the plies 30 and 32 to be of uniform width and to terminate substantially short of the lateral edges 36 of the blanket and completely encase the cords in rubber.
As best seen, however, in Figure 4, as the blanket 12 passes through the nip 22, it is compressed up to 25% or more of its normal thickness. In doing so, a pair of bulges 38 and 40 are developed along the lateral edges. It has been discovered that this bulging is a major cause of the failure of the lateral edges of the reinforcing structure 13. The laterally outer cord 42 in the ply 32 is drawn laterally sideways as the belt passes through the nip 22, and after several such strains and flexures, the cord 42 will break. Successively the cords 43 and 44 and so on will break, ultimately rendering the blanket 12 useless.
In addition a circumferential crack or rupture 45 can develop adjacent the lateral edge of the first ply 30 which extends to the lower surface 34.
In accordance with the present invention, and as illustrated in Figures 5, 6 and 7, three plies of fabric are arranged in the reinforcing structure 13 in a specific manner to reduce or eliminate this edge failure. The first ply of cord fabric 50 is disposed closely adjacent the bottom side 34 of the blanket 12 and has its cords extending transversely with respect to the blanket. The second ply of cord fabric 52 has its cords extending circumferentially about the blanket 12 while the third ply 54 has its cords extending transversely with respect to the blanket 12. The laterally outer edge 56 of the second ply 52 is disposed laterally inwardly of the laterally outer edges 58 and 60 of the first and third plies 50 and 54. More specifically, the laterally outer edges 58 and 60 of the first and third plies 50 and 54 extent all the way to the laterally outer edge 36 of the blanket 12, while the laterally outer edge 56 of the central ply 52 is located a distance D of between 1/8 inch and 1 1/2 inches inwardly from the edge 36 of the blanket 12 and the edges 58 and 60 of the plies 50 and 54. An optimum distance D is about 1/2 inch.
As best seen in Figure 7, the sandwiching of the circumferentially extending cords between two layers of transversely extending cords. Specifically, as shown in Figure 7, the major bulge 62 in the belt as it passes through the nip 22 will be confined to the thick area above the reinforcing structure 13.
It is preferable that the reinforcing plies 50, 52 and 54 be confined to an area as close to the bottom side 34 of the blanket 12 as possible. This will provide a greater volume of compressible rubber above the reinforcing material which can be deformed as the blanket 12 passes through the nip 22. It is preferred that the plies be kept within the of compressible rubber above the reinforcing material which can be deformed as the blanket 12 passes throughthe nip 22. It is preferred that the plies be kept within the lower 25% of the blanket 12. The transversely extending cords in the ply 54 tend to restrict and distribute the outwardly stretching forces of the rubber and protect the circumferentially extending cords from being unduly strained and broken.
WHAT WE CLAIM IS:
1. A flexible endless blanket of elastomeric material, for use in apparatus for longitudinally compressing a web, and comprising first and third plies of material extending circumferentially through said blanket and having reinforcing cords embedded therein, the cords extending transversely across said blanket, and a second ply of material sandwiched between said first and third plies and having reinforcing cords embedded therein, the cords in said second ply extending
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. the blanket 12 as it enters the nip 22. The web of material 24 passes about the third pulley 18 and exits at 26. The blanket 12 is provided with an inextensible reinforcing structure 13 and is tightly trained about the pulleys 14, 16, 18 and 20. The outer surface 28 of the blanket 12 will, therefore, be stretched in the machine direction or circumferentially as its wraps about the first pulley 14. The stretching of the outer surface 28 will be increased by the nipping or Venturi effect of the constriction ofthe thickness ofthe belt. In.the same manner, the outer surface 28 of the belt 12 will be compressed as it reverses curvature passing about the third pulley 18. Thus, a web applied to the outer surface 28 of the blanket 12 in the stretched condition as it enters nip 22 will be foreshortened as it passes through the nip 22 between the rolls 14 and 18 and changes directions of curvature as described above. With reference to Figures 2, 3 and 4, there is illustrated a common prior art structure for such a blanket 12. The reinforcing structure 13 includes two plies 30 and 32 of cord or cord reinforced fabric. The structure 13 is disposed closely adjacent the bottom side 34 of the blanket 12. For purposes of this invention, the bottom or lower side 34 of the blanket 12 will be that side of the blanket 12 which is closest to the first pulley 14, i.e. the pulley about which the blanket 12 is trained when the fabric or web 24 is first applied to the belt. As is customary in prior art blanket structures, the first ply 30 has its reinforcing cords extending transversely or from side to side with respect to the blanket 12. The second ply 32 has its cords extending circumferentially or in the machine direction. These cords can be applied by helically winding a single cord or helically winding a band of several cords. In any event, it will be appreciated that prior art structures provide for the plies 30 and 32 to be of uniform width and to terminate substantially short of the lateral edges 36 of the blanket and completely encase the cords in rubber. As best seen, however, in Figure 4, as the blanket 12 passes through the nip 22, it is compressed up to 25% or more of its normal thickness. In doing so, a pair of bulges 38 and 40 are developed along the lateral edges. It has been discovered that this bulging is a major cause of the failure of the lateral edges of the reinforcing structure 13. The laterally outer cord 42 in the ply 32 is drawn laterally sideways as the belt passes through the nip 22, and after several such strains and flexures, the cord 42 will break. Successively the cords 43 and 44 and so on will break, ultimately rendering the blanket 12 useless. In addition a circumferential crack or rupture 45 can develop adjacent the lateral edge of the first ply 30 which extends to the lower surface 34. In accordance with the present invention, and as illustrated in Figures 5, 6 and 7, three plies of fabric are arranged in the reinforcing structure 13 in a specific manner to reduce or eliminate this edge failure. The first ply of cord fabric 50 is disposed closely adjacent the bottom side 34 of the blanket 12 and has its cords extending transversely with respect to the blanket. The second ply of cord fabric 52 has its cords extending circumferentially about the blanket 12 while the third ply 54 has its cords extending transversely with respect to the blanket 12. The laterally outer edge 56 of the second ply 52 is disposed laterally inwardly of the laterally outer edges 58 and 60 of the first and third plies 50 and 54. More specifically, the laterally outer edges 58 and 60 of the first and third plies 50 and 54 extent all the way to the laterally outer edge 36 of the blanket 12, while the laterally outer edge 56 of the central ply 52 is located a distance D of between 1/8 inch and 1 1/2 inches inwardly from the edge 36 of the blanket 12 and the edges 58 and 60 of the plies 50 and 54. An optimum distance D is about 1/2 inch. As best seen in Figure 7, the sandwiching of the circumferentially extending cords between two layers of transversely extending cords. Specifically, as shown in Figure 7, the major bulge 62 in the belt as it passes through the nip 22 will be confined to the thick area above the reinforcing structure 13. It is preferable that the reinforcing plies 50, 52 and 54 be confined to an area as close to the bottom side 34 of the blanket 12 as possible. This will provide a greater volume of compressible rubber above the reinforcing material which can be deformed as the blanket 12 passes through the nip 22. It is preferred that the plies be kept within the of compressible rubber above the reinforcing material which can be deformed as the blanket 12 passes throughthe nip 22. It is preferred that the plies be kept within the lower 25% of the blanket 12. The transversely extending cords in the ply 54 tend to restrict and distribute the outwardly stretching forces of the rubber and protect the circumferentially extending cords from being unduly strained and broken. WHAT WE CLAIM IS:

1. A flexible endless blanket of elastomeric material, for use in apparatus for longitudinally compressing a web, and comprising first and third plies of material extending circumferentially through said blanket and having reinforcing cords embedded therein, the cords extending transversely across said blanket, and a second ply of material sandwiched between said first and third plies and having reinforcing cords embedded therein, the cords in said second ply extending
circumferentially with respect to said blanket and being completely encased between said first and third plies with the laterally outermost cords in said second ply being disposed laterally inwardly with respect to the ends of the cords in said first and third plies, and all three plies being disposed within the lower 25% of the blanket.

2. A blanket according to claim 1, wherein the cords in said first and third plies extend to the laterally outer edges of said blanket.

3. A blanket according to claim 1 or claim 2, wherein the laterally outer edge of said second ply is disposed between 1/8 and I 1/2 inches laterally inwardly with respect to the laterally outer edges of said first and third plies.

4. A blanket according to claim 1 to claim 2, wherein the laterally outer edges of said first and third plies are disposed about 1/2 inch laterally outwardly of the laterally outer edge of said second ply.

5. A flexible endless blanket according to claim 1 and substantially as hereinbefore described with reference to Figures 5, 6 and 7 of the accompanying drawings.

6. Apparatus for longitudinally compressing a web comprising first, second and third rolls rotatable about their respective axes and a flexible endless blanket of elastomeric material according to any one of the preceding claims, said blanket being trained about said first and second rolls and passing through a nip between said second and third rolls which compresses said blanket.

GB20393/78A
1978-05-18
1978-05-18
Blanket for the production of extensible paper

Expired

GB1603547A
(en)

Priority Applications (3)

Application Number
Priority Date
Filing Date
Title

GB20393/78A

GB1603547A
(en)

1978-05-18
1978-05-18
Blanket for the production of extensible paper

JP7405478A

JPS54151609A
(en)

1978-05-18
1978-06-19
Flexible endless blanket

DE2832054A

DE2832054C2
(en)

1978-05-18
1978-07-21

Endless pressure belt made of elastomeric material for use in a device for longitudinally compressing a web

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

GB20393/78A

GB1603547A
(en)

1978-05-18
1978-05-18
Blanket for the production of extensible paper

Publications (1)

Publication Number
Publication Date

GB1603547A
true

GB1603547A
(en)

1981-11-25

Family
ID=10145231
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB20393/78A
Expired

GB1603547A
(en)

1978-05-18
1978-05-18
Blanket for the production of extensible paper

Country Status (3)

Country
Link

JP
(1)

JPS54151609A
(en)

DE
(1)

DE2832054C2
(en)

GB
(1)

GB1603547A
(en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4229253A
(en)

1979-04-26
1980-10-21
Beloit Corporation
Extended nip press with special belt reinforcement

US4229254A
(en)

1979-04-26
1980-10-21
Beloit Corporation
Extended nip press with bias ply reinforced belt

US4238287A
(en)

1979-04-26
1980-12-09
Beliot Corporation
Extended nip press with transverse stiffening means in the belt

FR2482147A1
(en)

1980-04-16
1981-11-13
Binet Et Cie Ets Louis

WET FELT FOR STATIONERY

GB2106555B
(en)

1981-09-15
1985-10-02
Albany Int Corp
Improvements relating to extended nip dewatering presses and to the manufacture of belts for use in such presses

DE3629736A1
(en)

1986-09-01
1988-03-03
Becker Gummiwerke

Wet press for dewatering fibrous webs

JPS63130027U
(en)

1987-02-17
1988-08-25

DE3715153A1
(en)

1987-05-07
1988-12-01
Voith Gmbh J M

REINFORCED PRESS SHEATH FOR A PRESS DEVICE FOR TREATING RAIL-SHAPED GOODS, SUCH AS, FOR example, OF PAPER SHEETS, AND METHOD AND DEVICE FOR THE PRODUCTION THEREOF

JP4323427B2
(en)

2002-09-03
2009-09-02
株式会社豊田中央研究所

Sheet

DE102007044552A1
(en)

2007-09-15
2009-03-19
Voith Patent Gmbh

Conveyor belt with edge reinforcement

DE102015212480A1
(en)

2015-07-03
2017-01-05
Contitech Transportbandsysteme Gmbh

In the longitudinal direction endless closed band, in particular round baler belt

DE102015212481A1
(en)

2015-07-03
2017-01-05
Contitech Transportbandsysteme Gmbh

In the longitudinal direction endless closed band, in particular round baler belt

Family Cites Families (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US2021975A
(en)

1931-02-10
1935-11-26
Cluett Peabody & Co Inc
Method of and means for treating woven and the like fabrics and yarns

BE516549A
(en)

1952-06-11

NL278075A
(en)

1956-11-23
1900-01-01

FR1265868A
(en)

1960-05-16
1961-07-07
Michelin & Cie

Further development of conveyor belts

1978

1978-05-18
GB
GB20393/78A
patent/GB1603547A/en
not_active
Expired

1978-06-19
JP
JP7405478A
patent/JPS54151609A/en
active
Granted

1978-07-21
DE
DE2832054A
patent/DE2832054C2/en
not_active
Expired

Also Published As

Publication number
Publication date

DE2832054C2
(en)

1982-12-16

JPS5726224B2
(en)

1982-06-03

JPS54151609A
(en)

1979-11-29

DE2832054A1
(en)

1979-11-22

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