ADHESIVE FOR USE IN PRODUCING CORRUGATED BOARD
PURPOSE:To provide the titled adhesive which has excellent setability, good laminating rate and bond strength, gives corrugated board sheets of good quality and does not require heating, by mixing a paste soln. of low-viscosity starch with PVA. CONSTITUTION:Starch such as rice starch or tapioca star...
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| creator | KUROSAKI YASUMI SHIRAKAWA KINICHI FUKUSHIMA RIKIO FUKINO HIROTAKE KOYAKUMARU TAKATOSHI IGARASHI SEIICHI |
| description | PURPOSE:To provide the titled adhesive which has excellent setability, good laminating rate and bond strength, gives corrugated board sheets of good quality and does not require heating, by mixing a paste soln. of low-viscosity starch with PVA. CONSTITUTION:Starch such as rice starch or tapioca starch is treated with an oxidizing agent such as H2O2 or an org. or inorg acid to obtain low-viscosity starch. 0.5-25wt% (based on the quantity of said low-viscosity starch) PVA having a degree of polymn. of 300-2,700 and a degree of saponification of 68-100% is dissolved in a paste soln. obtd. by dissolving 20-50wt% said low- viscosity starch in water, thus obtaining an adhesive having a viscosity of 50- 2,000 BU at 85 deg.C. Optionally, not more than 2wt% (based on the quantity of PVA) boric acid or borax is added to the adhesive, and an alkali is then added thereto to adjust the pH to 7.0-11.0. |
| format | Patent |
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CONSTITUTION:Starch such as rice starch or tapioca starch is treated with an oxidizing agent such as H2O2 or an org. or inorg acid to obtain low-viscosity starch. 0.5-25wt% (based on the quantity of said low-viscosity starch) PVA having a degree of polymn. of 300-2,700 and a degree of saponification of 68-100% is dissolved in a paste soln. obtd. by dissolving 20-50wt% said low- viscosity starch in water, thus obtaining an adhesive having a viscosity of 50- 2,000 BU at 85 deg.C. 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CONSTITUTION:Starch such as rice starch or tapioca starch is treated with an oxidizing agent such as H2O2 or an org. or inorg acid to obtain low-viscosity starch. 0.5-25wt% (based on the quantity of said low-viscosity starch) PVA having a degree of polymn. of 300-2,700 and a degree of saponification of 68-100% is dissolved in a paste soln. obtd. by dissolving 20-50wt% said low- viscosity starch in water, thus obtaining an adhesive having a viscosity of 50- 2,000 BU at 85 deg.C. 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CONSTITUTION:Starch such as rice starch or tapioca starch is treated with an oxidizing agent such as H2O2 or an org. or inorg acid to obtain low-viscosity starch. 0.5-25wt% (based on the quantity of said low-viscosity starch) PVA having a degree of polymn. of 300-2,700 and a degree of saponification of 68-100% is dissolved in a paste soln. obtd. by dissolving 20-50wt% said low- viscosity starch in water, thus obtaining an adhesive having a viscosity of 50- 2,000 BU at 85 deg.C. Optionally, not more than 2wt% (based on the quantity of PVA) boric acid or borax is added to the adhesive, and an alkali is then added thereto to adjust the pH to 7.0-11.0.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES CHEMISTRY DYES METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL PAINTS POLISHES USE OF MATERIALS AS ADHESIVES |
| title | ADHESIVE FOR USE IN PRODUCING CORRUGATED BOARD |
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