US1829585A - Method of preparing impregnated paper products - Google Patents
Method of preparing impregnated paper products Download PDFInfo
- Publication number
- US1829585A US1829585A US236580A US23658027A US1829585A US 1829585 A US1829585 A US 1829585A US 236580 A US236580 A US 236580A US 23658027 A US23658027 A US 23658027A US 1829585 A US1829585 A US 1829585A
- Authority
- US
- United States
- Prior art keywords
- cellulose
- paper
- derivative
- preparing
- sheets
- 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
- 238000000034 method Methods 0.000 title description 18
- 229920002678 cellulose Polymers 0.000 description 39
- 239000001913 cellulose Substances 0.000 description 38
- 229920002301 cellulose acetate Polymers 0.000 description 22
- 239000002904 solvent Substances 0.000 description 11
- 239000004014 plasticizer Substances 0.000 description 10
- 238000006467 substitution reaction Methods 0.000 description 7
- 239000010985 leather Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000000020 Nitrocellulose Substances 0.000 description 2
- FJWGYAHXMCUOOM-QHOUIDNNSA-N [(2s,3r,4s,5r,6r)-2-[(2r,3r,4s,5r,6s)-4,5-dinitrooxy-2-(nitrooxymethyl)-6-[(2r,3r,4s,5r,6s)-4,5,6-trinitrooxy-2-(nitrooxymethyl)oxan-3-yl]oxyoxan-3-yl]oxy-3,5-dinitrooxy-6-(nitrooxymethyl)oxan-4-yl] nitrate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O)O[C@H]1[C@@H]([C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@@H](CO[N+]([O-])=O)O1)O[N+]([O-])=O)CO[N+](=O)[O-])[C@@H]1[C@@H](CO[N+]([O-])=O)O[C@@H](O[N+]([O-])=O)[C@H](O[N+]([O-])=O)[C@H]1O[N+]([O-])=O FJWGYAHXMCUOOM-QHOUIDNNSA-N 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000011490 mineral wool Substances 0.000 description 2
- 229920001220 nitrocellulos Polymers 0.000 description 2
- 150000002895 organic esters Chemical class 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 2
- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229920013683 Celanese Polymers 0.000 description 1
- DQEFEBPAPFSJLV-UHFFFAOYSA-N Cellulose propionate Chemical compound CCC(=O)OCC1OC(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C1OC1C(OC(=O)CC)C(OC(=O)CC)C(OC(=O)CC)C(COC(=O)CC)O1 DQEFEBPAPFSJLV-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 239000004348 Glyceryl diacetate Substances 0.000 description 1
- 101150034699 Nudt3 gene Proteins 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 229920001727 cellulose butyrate Polymers 0.000 description 1
- 229920003086 cellulose ether Polymers 0.000 description 1
- 229920006218 cellulose propionate Polymers 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- -1 etht r Chemical compound 0.000 description 1
- 235000010944 ethyl methyl cellulose Nutrition 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 235000019443 glyceryl diacetate Nutrition 0.000 description 1
- 235000013773 glyceryl triacetate Nutrition 0.000 description 1
- 239000001087 glyceryl triacetate Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229920003087 methylethyl cellulose Polymers 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000005070 ripening Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/02—Synthetic cellulose fibres
-
- 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
- D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
- D21H11/20—Chemically or biochemically modified fibres
-
- 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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/02—Synthetic cellulose fibres
- D21H13/06—Cellulose esters
-
- 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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/28—Organic non-cellulose fibres from natural polymers
- D21H13/34—Protein fibres
-
- 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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
-
- 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
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/42—Asbestos
-
- 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
- D21H17/03—Non-macromolecular organic compounds
Definitions
- This invention relates to a new method of preparing paper, sheets, boards or laminated products made of fibres such as wood pulp or rag stock, asbestos, mineral wool, IL spun glass, leather fibres, etc. and having incorporated therein a derivative of cellulose.
- An object of our invention is to prepare a material containing the ordinary paper making fibres, or other vegetable, animal or min- 10 eral fibres, which material is strong,.water resistant-and thermoplastic.
- Another object of our invention is to prepare paper, sheets, boards or comparatively thick laminated products by incorporating in a paper pulp, derivatives of cellulose in such manner that the same is thoroughly disseminated throughout the mass so that very large amountsof cellulose-derivatives may be added thereto while still obtaining a uniform product.
- the paper stock may comprise wood pulp, rag fibres or any other vegetable fibres or animal fibres such as leather fibres made from leather scrap, or mineral fibres such as asbestos, mineral wool or spun glass suitable for paper making.
- the stock may contain one or a mixture of two or more of the above named materials.
- any suitable or desired fillers, siz-. ing materials, pigments or dyes may be incorporated therein.
- the paper may be placed between heated rollers under 'gh pressure, whereu on the articles of cellulose derivative coa esce to orm a continuous mass embedding the wood, rag or other vegetable, animal or mineral fibres.
- plasticizers or softeners these aid materially in causing the cellulose derivative to coalesce.
- a solvent for the cellulose derivative may be applied to the paper by brushing, spraying, dipp ng or otherwise coating, and then,- with or wlthout rolling, upon evaporation of the solvent, the cellulose derivative is formed as a continuous film.
- the paper When it is desired to form a laminated product, the paper, after it leaves the Fourdrinier machme, is built up in layers to the desired thickness and hotv pressed to cause the cellulose derivative to coalesce and form a solid mass. Or else, a solvent for the cellulose derivative may be applied to the paper prior to the building up of the same layers and then the mass is pressed to cause consolidation of the layers 1n one mass.
- a pulp containing leather fibres and the cellulose derivative with or without a softener, plasticizer, or high boilin solvent is placed in a wet machine provi ed with a revolving perforated cylinder.
- suction is applied to the interior thereof and thus a film of fibres is collected on its surface.
- lVhen a layer of sufficient thickness is built up on the cylinder, the cylindrical layer of fibres is slit with a knife, the sheet ished product.
- the great advanta e of our invention is due to the act that by our process lar e amounts as high as 100% of cellulose derlvative based on theweight of the other ingredients of the paper may be incorporated therein. With the larger percentages of cellulose derivative, hard, sti and themoplastic products ma be produced.
- the addition of the high boi ing point solvent, plasticizer or softener is of particular advantage when large proportions of cellulose derivatives are used, since the product thus formed is not brittle but is pliant and adaptable for many uses, and can be worked under less heat and pressure than when they are not used, and
- the cellulosederivative used in this invention may be cellulose nitrate or organic substitution derivatives of cellulose. Since the organic substitution derivatives of cellulose are not inflammable, they are preferred over the inflammable cellulose nitrate.
- the organic substitution derivatives of cellulose include cellulose esters such as cellulose formats, cellulose acetate, cellulose propionate, cellulose butyrate and cellulose ethers such as methyl cellulose, ethyl cellulose and ben zyl cellulose. However, at the present time cellulose acetate is preferred because of economy and ease of 'working.
- the cellulose acetate best used in this process is a hydrated cellulose acetate preferably formed by ripening the cellulose acetate after acetylatlon in the presence of 5 water and then precipitating the same with water under such conditions that the cellulose acetate assumes a fibrous form.
- the cellulose acetate that is added to the pulp in the beater should preferably be either freshly prepared or else kept moist so that it does not harden and become friable.
- the plasticizer, softener or high boiling solvent used may be of any suitable nature such as diethyl phthalate, tricresyl phosphate, triphenyl phosphate, triacetin, diacetin, etc.
- the volatile solvent that may be used may. be any known solvent such as acetone, alcohol, etht r, benzene, ethylene dichloride, etc.
- Process of preparing an impregnated paper product comprising adding a cellulose derivative in a fibrous form to a paper stock, forming the same into sheets and fixing the said cellulose derivative therein.
- Process of preparing an impregnated paper product comprising adding an organic substitution derivative of cellulose in a fibrous form to a paper stock, forming the same into sheets and fixing the said organic substitution derivative of cellulose therein.
- Process of preparing an impregnated paper product comprising adding an organic ester of cellulose in a fibrous form to a paper stock, forming the same into sheets and fixing the said organic ester of cellulose therein.
- Process of preparing an impregnated acetate in a fibrous form with a paper stock in a pulp beater, forming the resulting prod- .95 paper product comprising mixing cellulose cellulose acetate in a fibrous form with a paper stock in'a pulp beater forming the resulting product into sheets, removing excess moisture and then causing the cellulose acetate to coalesce.
- Process of preparing an impregnated paper product comprising mixing hydrated cellulose acetate in a fibrous form with a paper stock in a pulp beater, forming the resulting product into sheets, removing excess moisture and then passing the sheets between heated rollers to cause the cellulose acetate to coalesce.
- Process of preparing an impregnated paper product comprising mixing hydrated cellulose acetate in a fibrous form with a pa- 1 per stock in a pulp beater, forming the resulting product into sheets, removing excess moisture, forming layers of the sheets and then passing the sheets between heated rollers under pressure to cause the cellulose acetate to coalesce to form a laminated product.
- Process of preparing impregnated paper product comprising mixing a cellulose derivative in unplastified state and a plasticizer with the paper stock, forming the same. into sheets and fixing the said cellulose derivative therein.
- Process of preparing an impregnated paper product comprising mixing an organic substitution derivative of cellulose in unplastified state and a plasticizer with the paper stock, forming the same into sheets and fixing the said organic substitution derivative of cellulose therein.
- Process of preparing an impregnated paper product comprising mixing cellulose acetate in unplastified state and a plasticizer with the paper stock, forming the same into sheets and fixing the said cellulose acetate therein.
- Process of preparing an impregnated paper product comprising mixing cellulose acetate in unplastified state and a plasticizer with the paper stock, forming the same into sheets and fixing the said cellulose acetate therein by passing the same between heated i-ollers to cause the cellulose acetate to coaesce.
Landscapes
- Paper (AREA)
- Laminated Bodies (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US236580A US1829585A (en) | 1927-11-29 | 1927-11-29 | Method of preparing impregnated paper products |
| GB35181/28A GB301428A (enrdf_load_stackoverflow) | 1927-11-29 | 1928-11-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US236580A US1829585A (en) | 1927-11-29 | 1927-11-29 | Method of preparing impregnated paper products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1829585A true US1829585A (en) | 1931-10-27 |
Family
ID=22890088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US236580A Expired - Lifetime US1829585A (en) | 1927-11-29 | 1927-11-29 | Method of preparing impregnated paper products |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US1829585A (enrdf_load_stackoverflow) |
| GB (1) | GB301428A (enrdf_load_stackoverflow) |
Cited By (45)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2526125A (en) * | 1942-05-25 | 1950-10-17 | American Viscose Corp | Paper products and methods of making the same |
| US2706156A (en) * | 1952-02-19 | 1955-04-12 | Hurlbut Paper Company | Method of making sheet material |
| US2787542A (en) * | 1951-09-17 | 1957-04-02 | Lof Glass Fibers Co | Glass paper |
| US2810645A (en) * | 1950-02-09 | 1957-10-22 | American Viscose Corp | Method of making textile webs |
| US2810644A (en) * | 1950-02-09 | 1957-10-22 | American Viscose Corp | Paper products and method of making the same |
| US2932601A (en) * | 1954-11-12 | 1960-04-12 | Hawley Products Co | Process of preparing felted products containing hydratable and non-hydratable fibers |
| US3028296A (en) * | 1958-10-20 | 1962-04-03 | American Can Co | Fibrous sheet material |
| US3039914A (en) * | 1959-07-07 | 1962-06-19 | Little Inc A | Process for forming a bonded wetformed web and resulting product |
| US3135590A (en) * | 1957-07-12 | 1964-06-02 | Norton Co | Dimensionally stabilized paper and coated abrasives made therefrom |
| US3157566A (en) * | 1962-07-17 | 1964-11-17 | Beloit Corp | Method of incorporating resin in molded pulp products |
| US4308094A (en) * | 1977-02-02 | 1981-12-29 | Sanyo Electric Co., Ltd. | Diaphragm for speaker and method of producing same |
| WO1997020985A1 (en) * | 1995-12-07 | 1997-06-12 | Eastman Chemical Company | High pressure laminates made with paper containing cellulose acetate |
| WO1998016688A1 (en) * | 1996-10-11 | 1998-04-23 | Eastman Chemical Company | Plasticized sheets, laminates made from such sheets and process for preparing such laminates |
| WO1999011863A1 (en) * | 1997-09-04 | 1999-03-11 | Eastman Chemical Company | Method of making paper |
| US6010595A (en) * | 1996-10-11 | 2000-01-04 | Eastman Chemical Company | Multiply paper comprising a mixture of cellulose fibers and cellulose ester fibers having imparted softening properties and a method of making the same |
| US11230811B2 (en) | 2018-08-23 | 2022-01-25 | Eastman Chemical Company | Recycle bale comprising cellulose ester |
| US11286619B2 (en) | 2018-08-23 | 2022-03-29 | Eastman Chemical Company | Bale of virgin cellulose and cellulose ester |
| US11299854B2 (en) | 2018-08-23 | 2022-04-12 | Eastman Chemical Company | Paper product articles |
| US11306433B2 (en) | 2018-08-23 | 2022-04-19 | Eastman Chemical Company | Composition of matter effluent from refiner of a wet laid process |
| US11313081B2 (en) | 2018-08-23 | 2022-04-26 | Eastman Chemical Company | Beverage filtration article |
| US11332885B2 (en) | 2018-08-23 | 2022-05-17 | Eastman Chemical Company | Water removal between wire and wet press of a paper mill process |
| US11332888B2 (en) | 2018-08-23 | 2022-05-17 | Eastman Chemical Company | Paper composition cellulose and cellulose ester for improved texturing |
| US11339537B2 (en) | 2018-08-23 | 2022-05-24 | Eastman Chemical Company | Paper bag |
| US11390991B2 (en) | 2018-08-23 | 2022-07-19 | Eastman Chemical Company | Addition of cellulose esters to a paper mill without substantial modifications |
| US11390996B2 (en) | 2018-08-23 | 2022-07-19 | Eastman Chemical Company | Elongated tubular articles from wet-laid webs |
| US11396726B2 (en) | 2018-08-23 | 2022-07-26 | Eastman Chemical Company | Air filtration articles |
| US11401659B2 (en) | 2018-08-23 | 2022-08-02 | Eastman Chemical Company | Process to produce a paper article comprising cellulose fibers and a staple fiber |
| US11401660B2 (en) | 2018-08-23 | 2022-08-02 | Eastman Chemical Company | Broke composition of matter |
| US11408128B2 (en) | 2018-08-23 | 2022-08-09 | Eastman Chemical Company | Sheet with high sizing acceptance |
| US11414791B2 (en) | 2018-08-23 | 2022-08-16 | Eastman Chemical Company | Recycled deinked sheet articles |
| US11414818B2 (en) | 2018-08-23 | 2022-08-16 | Eastman Chemical Company | Dewatering in paper making process |
| US11421385B2 (en) | 2018-08-23 | 2022-08-23 | Eastman Chemical Company | Soft wipe comprising cellulose acetate |
| US11421387B2 (en) | 2018-08-23 | 2022-08-23 | Eastman Chemical Company | Tissue product comprising cellulose acetate |
| US11420784B2 (en) | 2018-08-23 | 2022-08-23 | Eastman Chemical Company | Food packaging articles |
| US11441267B2 (en) | 2018-08-23 | 2022-09-13 | Eastman Chemical Company | Refining to a desirable freeness |
| US11466408B2 (en) | 2018-08-23 | 2022-10-11 | Eastman Chemical Company | Highly absorbent articles |
| US11479919B2 (en) | 2018-08-23 | 2022-10-25 | Eastman Chemical Company | Molded articles from a fiber slurry |
| US11492755B2 (en) | 2018-08-23 | 2022-11-08 | Eastman Chemical Company | Waste recycle composition |
| US11492757B2 (en) | 2018-08-23 | 2022-11-08 | Eastman Chemical Company | Composition of matter in a post-refiner blend zone |
| US11492756B2 (en) | 2018-08-23 | 2022-11-08 | Eastman Chemical Company | Paper press process with high hydrolic pressure |
| US11512433B2 (en) | 2018-08-23 | 2022-11-29 | Eastman Chemical Company | Composition of matter feed to a head box |
| US11519132B2 (en) | 2018-08-23 | 2022-12-06 | Eastman Chemical Company | Composition of matter in stock preparation zone of wet laid process |
| US11525215B2 (en) | 2018-08-23 | 2022-12-13 | Eastman Chemical Company | Cellulose and cellulose ester film |
| US11530516B2 (en) | 2018-08-23 | 2022-12-20 | Eastman Chemical Company | Composition of matter in a pre-refiner blend zone |
| US11639579B2 (en) | 2018-08-23 | 2023-05-02 | Eastman Chemical Company | Recycle pulp comprising cellulose acetate |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE752791C (de) * | 1941-05-04 | 1953-05-11 | Westfaelisch Anhaltische Spren | Verfahren zur Herstellung von kunstlederartigen Massen |
| DE752630C (de) * | 1941-08-20 | 1953-06-15 | Siemens Schuckertwerke A G | Verfahren zur Herstellung von Papier aus veresterten, insbesondere acetylierten Fasern |
| DE2902957C2 (de) * | 1979-01-26 | 1983-11-24 | Deutsche Automobilgesellschaft Mbh, 3000 Hannover | Verfahren zur Herstellung von Separatoren für galvanische Zellen |
-
1927
- 1927-11-29 US US236580A patent/US1829585A/en not_active Expired - Lifetime
-
1928
- 1928-11-29 GB GB35181/28A patent/GB301428A/en not_active Expired
Cited By (49)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2526125A (en) * | 1942-05-25 | 1950-10-17 | American Viscose Corp | Paper products and methods of making the same |
| US2810645A (en) * | 1950-02-09 | 1957-10-22 | American Viscose Corp | Method of making textile webs |
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Also Published As
| Publication number | Publication date |
|---|---|
| GB301428A (enrdf_load_stackoverflow) | 1930-01-30 |
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