US1996314A - Fibrous composition - Google Patents
Fibrous composition Download PDFInfo
- Publication number
- US1996314A US1996314A US52420731A US1996314A US 1996314 A US1996314 A US 1996314A US 52420731 A US52420731 A US 52420731A US 1996314 A US1996314 A US 1996314A
- Authority
- US
- United States
- Prior art keywords
- pulp
- cellulose
- wood
- fibrous composition
- alpha
- 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 - Lifetime
Links
- 239000000203 mixture Substances 0.000 title description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000000123 paper Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 239000007767 bonding agent Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000002657 fibrous material Substances 0.000 description 3
- 239000002655 kraft paper Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 229920002522 Wood fibre Polymers 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000002025 wood fiber Substances 0.000 description 2
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000010685 fatty oil Substances 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/185—Substances or derivates of cellulose
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
- Y10T428/249953—Composite having voids in a component [e.g., porous, cellular, etc.]
- Y10T428/249962—Void-containing component has a continuous matrix of fibers only [e.g., porous paper, etc.]
- Y10T428/249964—Fibers of defined composition
- Y10T428/249965—Cellulosic
- Y10T428/249966—Plural cellulosic components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31942—Of aldehyde or ketone condensation product
- Y10T428/31949—Next to cellulosic
- Y10T428/31964—Paper
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31971—Of carbohydrate
- Y10T428/31975—Of cellulosic next to another carbohydrate
- Y10T428/31978—Cellulosic next to another cellulosic
- Y10T428/31986—Regenerated or modified
Definitions
- This invention relates to fibrous compositions tained can be handled in the same manner as any including a bonding agent, and more specifically other fibrous material, and laid into paper or relates to such compositions supplied in sheet sheet form on a paper making machine after form and intended for the manufacture of lamibeating to efiect a partial hydration of the fibers.
- Bonding agents in prevalent use for such drying is coated or impregnated with a potencompositions are the resinoids, or compounds of tially reactive resinoid in solution and the solvent a resinous character which can be changed from removed.
- any of the known resinoids for exama fusible, soluble and potentially reactive state ple the phenol-formaldehyde condensation prodl0 to a substantially infuslble and insoluble state ucts, or compositions described in a Patent by the application of .heat, since compositions 1,677,417 to Turkington granted July 17, 1928 including such bonding agents impart superior comprising phenol-fatty-oil methylene reaction electrical and mechanical properties to articles products, can be used for this purpose. The made therefrom.
- the bonding agents are cusresinoids of the Turkington disclosure are tough l5 tomarily applied to sheets of the fibrous material and elastic when cold and form flexible laml- I as solutions to form coatings or impregnations, nated products with sheets of high alpha celand laminated products are made therefrom by lulose content, from which insulating parts can superposing a number of coated sheets and simulbe stamped out. taneously applying heat and pressure to convert A typical sample of laminatedmaterial stock. v
- the resinoid binder to the insoluble, infusible conprepared from superposed sheets of paper with 20 dition; but they can be otherwise incorporated an alpha cellulose fiber content of 94 per cent or with the fibers, for example by the wet process as more bonded with a coating or impregnating described in a P n o B k land 1,1 62 composition consisting of a solution of a resinoid granted November 16, 1915.
- Such a pulp can be prepared for u mec c D De it mm example by treating or cooking a sulfite pulp, and transverse st'engthelastic obtained by digesting wood chips in an acid sulfite alpha cellulose and laminated pieces tested solution, with an alkaline liquor, such as caustic were about the same order, 8411,! cellulose 50 soda, best followed by bleaching with chlorine or m a Somewhat 511991101 menlth t0 other suitable agent; other methods or modificathe ethersror & strength of over 17, 0 pound! to tions thereof known to the paper making art can the q fl inch, and les! bflmeneee than the be employed.
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Organic Insulating Materials (AREA)
Description
Patented Apr. 2, 1935 1 996 UNITED STATES PATENT OFFICE rmaous co'urosmon corded s. Wlghtman, Upper Montolalr, n. s.
No Drawing. Original application December 18,
1928, Serial No. 820,911. Divided and this application March 20, 1931, Serial No. 524,207. In Canada December 5, 1929 '1 Claim. (Cl. 154-2.)
This invention relates to fibrous compositions tained can be handled in the same manner as any including a bonding agent, and more specifically other fibrous material, and laid into paper or relates to such compositions supplied in sheet sheet form on a paper making machine after form and intended for the manufacture of lamibeating to efiect a partial hydration of the fibers.
5 nated products for insulating and kindred pur- Following the usual procedure, the sheet after 5 poses. Bonding agents in prevalent use for such drying is coated or impregnated with a potencompositions are the resinoids, or compounds of tially reactive resinoid in solution and the solvent a resinous character which can be changed from removed. Any of the known resinoids, for exama fusible, soluble and potentially reactive state ple the phenol-formaldehyde condensation prodl0 to a substantially infuslble and insoluble state ucts, or compositions described in a Patent by the application of .heat, since compositions 1,677,417 to Turkington granted July 17, 1928 including such bonding agents impart superior comprising phenol-fatty-oil methylene reaction electrical and mechanical properties to articles products, can be used for this purpose. The made therefrom. The bonding agents are cusresinoids of the Turkington disclosure are tough l5 tomarily applied to sheets of the fibrous material and elastic when cold and form flexible laml- I as solutions to form coatings or impregnations, nated products with sheets of high alpha celand laminated products are made therefrom by lulose content, from which insulating parts can superposing a number of coated sheets and simulbe stamped out. taneously applying heat and pressure to convert A typical sample of laminatedmaterial stock. v
the resinoid binder to the insoluble, infusible conprepared from superposed sheets of paper with 20 dition; but they can be otherwise incorporated an alpha cellulose fiber content of 94 per cent or with the fibers, for example by the wet process as more bonded with a coating or impregnating described in a P n o B k land 1,1 62 composition consisting of a solution of a resinoid granted November 16, 1915. made from cresol and formaldehyde and added As fibrous material for such compositions, wood in amount so as to yield a stock with about 40 per 25 pulp is commercially in demand on account of cent resinoid content, and molded under heat at I its low cost; but, as heretofore supplied, it has a temperature of about 170 C. and pressure at 3 not been found desirable, particularly in comabout 1000 pounds per square inch to convert the positions of sheet form for laminated products resinoid to the substantially infusible state, had
for electrical insulation, on account of the exa water absorption over a period of 24 hours of 30 cessive rate of water absorption and/or other about 1.3 per cent; a. trait wood fiber paper stock Pr p r i being such as to render the laminated as used heretofore and similarly prepared showed products formed therefrom less unsatisfactory for an absorption of 3.5 per cent. In addition it this and other purposes, particularly those remay be here noted that alpha cellulose pulp as qulring highest quality. is more readily prepared in paper form than C n ry to this past experience with wood kraft pulp and the beating time required for P p, I have disc ver d the ompositions can be kraft is from one-third to two-thirds longer made from wood fibers, yielding products having than that required for alpha-cellulose. In a rate of water absorption so low as to compare comparative t t; ith ott n fiber sto k,
40 favorably in this respect with other fibrous inalpha cellulose stock had a higher Helmsulating materials, such as cotton, and to be mc Strength 920 volts per nf alpha 11mm otherwise made more suitable for electrical inm 840 om mil 10 mm, sulatlon, provided the wood pulp be treated so v r as to be relatively high in resistant cellulose fibers, ggi g: g fz fg fifi that is, provided approximately 90 and prefer- 45 quency while the cotton fiber stock measured ably 94 per cent or more of the pulp content is M t 3 5 In M I m mes of tensile alpha cellulose. Such a pulp can be prepared for u mec c D De it mm example by treating or cooking a sulfite pulp, and transverse st'engthelastic obtained by digesting wood chips in an acid sulfite alpha cellulose and laminated pieces tested solution, with an alkaline liquor, such as caustic were about the same order, 8411,! cellulose 50 soda, best followed by bleaching with chlorine or m a Somewhat 511991101 menlth t0 other suitable agent; other methods or modificathe ethersror & strength of over 17, 0 pound! to tions thereof known to the paper making art can the q fl inch, and les! bflmeneee than the be employed. kraft, its modulus of elasticity as measured 56 The wood ,pulp rich in alpha cellulose so ob about 1,1 ,000. 56 I ized by a dielectric strength greater than 850 volts per mil, power factor less than 3.4, tensile strength greater than 17,000 pounds per square inch and water absorption less than 3 per cent in 24 hours.
GORDON E. WIGH'I'MAN.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US52420731 US1996314A (en) | 1928-12-18 | 1931-03-20 | Fibrous composition |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US32691128A | 1928-12-18 | 1928-12-18 | |
US52420731 US1996314A (en) | 1928-12-18 | 1931-03-20 | Fibrous composition |
Publications (1)
Publication Number | Publication Date |
---|---|
US1996314A true US1996314A (en) | 1935-04-02 |
Family
ID=26985626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US52420731 Expired - Lifetime US1996314A (en) | 1928-12-18 | 1931-03-20 | Fibrous composition |
Country Status (1)
Country | Link |
---|---|
US (1) | US1996314A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2674648A (en) * | 1951-10-31 | 1954-04-06 | Gen Electric | Electrical insulation, insulated conductor, and method of preparation |
-
1931
- 1931-03-20 US US52420731 patent/US1996314A/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2674648A (en) * | 1951-10-31 | 1954-04-06 | Gen Electric | Electrical insulation, insulated conductor, and method of preparation |
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