GB832621A - Improvements in and connected with impregnated paper - Google Patents
Improvements in and connected with impregnated paperInfo
- Publication number
- GB832621A GB832621A GB617756A GB617756A GB832621A GB 832621 A GB832621 A GB 832621A GB 617756 A GB617756 A GB 617756A GB 617756 A GB617756 A GB 617756A GB 832621 A GB832621 A GB 832621A
- Authority
- GB
- United Kingdom
- Prior art keywords
- roll
- resin
- web
- wire
- paper
- 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
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type
-
- 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
- D21H11/12—Pulp from non-woody plants or crops, e.g. cotton, flax, straw, bagasse
Landscapes
- Cell Separators (AREA)
Abstract
832,621. Resin-impregnated paper; battery separators. FAIRWEATHER, H. G. C. (Riegel Paper Corporation). Feb. 28, 1956, No. 6177/56. Class 96. In making permeable paper having a very large number of minute pores, cellulosic fibres having a maximum diameter of 20 microns, e.g. cotton linters, are made into an aqueous pulp in a hydropulper 1 and a refiner 2. The pulp is diluted with water and fed into the flow-box 20 of a Fourdrinier papermaking machine having a wire 12 travelling in a triangular path around a breast roll 13, a supporting roll 14 and a suction couch roll 15; a supporting roll 17 and a stretch roll 16 being provided along the lowermost run of the wire. The diluted pulp is fed on to the upwardlyinclined portion of the wire from an extension 21 of the flow-box to form a paper web. Some water is removed from the web by suctionboxes 18 and 19. The web is transferred by a roll 24 on to an endless travelling felt 4, on which it is pressed by small rolls 6, and passes on to a travelling endless wire or felt 25, which carries the wet web around a roll 28 and through an aqueous solution of phenol-formaldehyde resin, in the " A " stage of condensation, contained in a tank 7, and then around a roll 27. The resin-impregnated web is then transferred to an endless travelling wire 8. Excess resin solution is removed by suctionboxes 10 and the web is smoothed by a roll 32. The web is then passed around a drying cylinder 11 against which it is held by a felt or wire 33. The drying cylinder is heated to a temperature between 220‹ and 280‹ F. at which temperature the resin is cured to the " B " stage of condensation. The resulting dry resin-impregnated paper has a maximum ohmic resistance of 0.067 ohms per square inch, per thousandth of 46 an inch of thickness and contains between 20 and 65% of resin based on the total weight of resin and fibres. In making battery separators from the paper, it is cut into pieces which are compressed at their edges and then heated to a temperature of about 300 ‹ F. to cure the resin to the " C " stage of condensation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB617756A GB832621A (en) | 1956-02-28 | 1956-02-28 | Improvements in and connected with impregnated paper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB617756A GB832621A (en) | 1956-02-28 | 1956-02-28 | Improvements in and connected with impregnated paper |
Publications (1)
Publication Number | Publication Date |
---|---|
GB832621A true GB832621A (en) | 1960-04-13 |
Family
ID=9809814
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB617756A Expired GB832621A (en) | 1956-02-28 | 1956-02-28 | Improvements in and connected with impregnated paper |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB832621A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2331642A1 (en) * | 1975-11-13 | 1977-06-10 | Roehm Gmbh | METHOD AND DEVICE FOR IMPREGNATION OF RAW PAPER-BUVARDS |
FR2341697A1 (en) * | 1976-02-20 | 1977-09-16 | Cyrenne Roland | STRETCH ROLLER IMPROVEMENTS FOR PAPER MACHINES |
EP2644762A1 (en) * | 2012-03-31 | 2013-10-02 | Johns Manville Europe GmbH | Method for producing wet-laid non-woven fabrics, in particular non-woven glass fiber fabrics |
-
1956
- 1956-02-28 GB GB617756A patent/GB832621A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2331642A1 (en) * | 1975-11-13 | 1977-06-10 | Roehm Gmbh | METHOD AND DEVICE FOR IMPREGNATION OF RAW PAPER-BUVARDS |
FR2341697A1 (en) * | 1976-02-20 | 1977-09-16 | Cyrenne Roland | STRETCH ROLLER IMPROVEMENTS FOR PAPER MACHINES |
EP2644762A1 (en) * | 2012-03-31 | 2013-10-02 | Johns Manville Europe GmbH | Method for producing wet-laid non-woven fabrics, in particular non-woven glass fiber fabrics |
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