CN1411971A - Production process of polyvinyl alcohol film by usind drum method - Google Patents
Production process of polyvinyl alcohol film by usind drum method Download PDFInfo
- Publication number
- CN1411971A CN1411971A CN 01131745 CN01131745A CN1411971A CN 1411971 A CN1411971 A CN 1411971A CN 01131745 CN01131745 CN 01131745 CN 01131745 A CN01131745 A CN 01131745A CN 1411971 A CN1411971 A CN 1411971A
- Authority
- CN
- China
- Prior art keywords
- polyvinyl alcohol
- roller
- film
- technology
- film forming
- 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.)
- Pending
Links
- 239000004372 Polyvinyl alcohol Substances 0.000 title claims abstract description 34
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title description 5
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 6
- 241001131688 Coracias garrulus Species 0.000 claims description 32
- 238000005516 engineering process Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 210000000981 epithelium Anatomy 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 235000011187 glycerol Nutrition 0.000 claims description 3
- 239000006166 lysate Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000006136 alcoholysis reaction Methods 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 claims description 2
- 238000012216 screening Methods 0.000 abstract description 2
- 238000005406 washing Methods 0.000 abstract description 2
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 21
- 229940068984 polyvinyl alcohol Drugs 0.000 description 16
- 238000000071 blow moulding Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 229940008099 dimethicone Drugs 0.000 description 1
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011086 glassine Substances 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- XQSFXFQDJCDXDT-UHFFFAOYSA-N hydroxysilicon Chemical compound [Si]O XQSFXFQDJCDXDT-UHFFFAOYSA-N 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- IPCSVZSSVZVIGE-UHFFFAOYSA-N n-hexadecanoic acid Natural products CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- 229920001921 poly-methyl-phenyl-siloxane Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- -1 technology is simple Substances 0.000 description 1
- UFTFJSFQGQCHQW-UHFFFAOYSA-N triformin Chemical compound O=COCC(OC=O)COC=O UFTFJSFQGQCHQW-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The process for producing polyvinyl alcohol film by using drum method is characterized by that the polyvinyl alcohol is undergone the processes of screening, washing and dissolving, then an anti-sticking agent is added, and a continuously and uniformly heated and rotated drum can be used, and dipped in the solution to form film and the film can be quickly removed so as to obtain the invented polyvinyl alcohol film.
Description
Technical field
The present invention relates to a kind of polyvinyl alcohol film production process.
Background technology
The method that existing polyvinyl alcohol is set cured manufacturing film has hydrostomia method, film casting method, blow moulding.Wherein hydrostomia method requirement solution concentration is low, power consumption is high, production efficiency is low, and film forming thickness is thick, the uniformity is poor.Film casting method equipment is huge, power consumption is high.The blow moulding cost of equipment is little, power consumption is low.
Blow moulding is made the PVA film, and as the clear 49-33595 of Japan Patent, United States Patent (USP) 3985849 grades are without glycerine plasticising, only, adjust moisture again, add fusion in the extruder with the bloated PVA resin of aqueous fusion, granulation, be blow molded into the bubble pipe through the garden head, simultaneously also heating outside the bubble pipe.Under heating, steep the pipe biaxial tension afterwards.This heating bidirectional extending method is actually dry, stretches, typing carries out simultaneously, and strand is difficult to slide, and degree of orientation is poor, so the gained film strength is not high, fails to have given play to the characteristic of PVA resin.And film obviously increases through heating power consumption repeatedly for three times in whole process of production.
Of the present invention open
The objective of the invention is for provide a kind of utilize roller heat continuously uniform rotation watchtower liquid film forming, continuously membrane, technology is simple, film forming speed is fast and film forming is thin, rate of film build is high, the open and flat degree of film forming well, the degree of drawing height, make the technology of the adjustable producing polyvinyl alcohol film by roller process of the thickness of film
Purpose of the present invention can realize by following measure:
A kind of technology of producing polyvinyl alcohol film by roller process comprises following processing step: dissolve polyvinyl alcohol screening, washing with polyvinyl alcohol more at normal temperatures (1), and solubility is 4-6%; (2) in lysate, add antitack agent, again solution is filtered, outgases; (3) utilize roller system film, i.e. roller continuously and smoothly's watchtower liquid film forming in solution of rotating with the continuously and smoothly, and the roller inwall evenly heating make the film rapid draing of roller surface, demoulding fast; Wherein the velocity of rotation of roller is 5-15 rev/min, and the heating-up temperature of roller inwall is 100-150 ℃; (4) film forming is batched, cut promptly can be the polyvinyl alcohol finished product.
The present invention has following advantage compared to existing technology:
1, the present invention changes the method for traditional polyvinyl alcohol system film, but adopt easy continuous heating, uniform rotation roller watchtower liquid fast filming, rapid draing in poly-vinyl alcohol solution, take off film, its rate of film build height, technical process is simple, equipment investment is few, reduce investment outlay.
2, the present invention utilizes the roller film forming, and film forming approaches and thickness can be with the rotating speed adjustment.
3, the present invention utilizes the cylinder film forming, the open and flat degree of film forming well, degree of drawing is higher.
Embodiments of the present invention
The present invention also will be described in further detail in conjunction with the embodiments:
A kind of technology of producing polyvinyl alcohol film by roller process comprises following processing step: it is the PVA resin of 500-2200, alcoholysis degree 97-99.99% that (1) polyvinyl alcohol is selected the degree of polymerization for use, and screens, washs, and the PVA resin is dissolved at normal temperatures again, and solubility is 5%; (2) in lysate, add antitack agent, antitack agent can be selected from nontoxic glycerine such as dodecoic acid glyceride, hexadecylic acid glyceride, 18 triglyceride and silicone oil such as dimethicone, hydroxy silicon oil, polymethylphenyl siloxane fluid, its addition be polyvinyl alcohol by weight 0.2%; Again solution is filtered, outgases; (3) utilize roller system film, i.e. roller continuously and smoothly's watchtower liquid film forming in solution of rotating with the continuously and smoothly, and the roller inwall evenly continuously heating make the film rapid draing of roller surface, demoulding fast; Wherein the velocity of rotation of roller is 5-15 rev/min, and the heating-up temperature of roller inwall is 100-150 ℃; The heating of roller inwall can adopt water power Hybrid Heating mode to heat; (4) film forming is batched, cut promptly can be the polyvinyl alcohol finished product.The thickness of finished product polyvinyl alcohol film of the present invention is 10-35 μ m, the wide 2000mm that reaches of spoke.The polyvinyl alcohol film of the present invention preparation is nontoxic, can degrade fully, and physical indexs such as its hot strength, tearing strength, toughness are higher than the POLYPROPYLENE GLYCOL film; Its transparency is the highest in all plastic sheetings and the glassine paper, and the film of preparation of the present invention is static electrification not, has the heat seal cohesive, is the ideal substitute of eliminating white pollution.
Describedly the epithelium of taking off after the roller film forming also can be carried out modification handle; The epithelium modification is to adopt known high temperature to add the water stretch processes.
Claims (4)
1, a kind of technology of producing polyvinyl alcohol film by roller process is characterized in that comprising following processing step: (1) with the polyvinyl alcohol dissolving, solubility is 4-6%; (2) in lysate, add antitack agent, again solution is filtered, outgases; (3) utilize roller system film, i.e. roller continuously and smoothly's watchtower liquid film forming in solution of rotating with the continuously and smoothly, and the roller inwall evenly heating make the film rapid draing of roller surface, demoulding fast; Wherein the velocity of rotation of roller is 5-15 rev/min, and the heating-up temperature of roller inwall is 100-150 ℃; (4) film forming is batched, cut promptly can be the polyvinyl alcohol finished product.
2, the technology of producing polyvinyl alcohol film by roller process as claimed in claim 1 is characterized in that it is the PVA resin of 500-2200, alcoholysis degree 97-99.99% that described polyvinyl alcohol can be selected the degree of polymerization for use.
3, the technology of producing polyvinyl alcohol film by roller process as claimed in claim 1 is characterized in that described antitack agent can be selected from glycerine and/or silicone oil, and its addition is polyvinyl alcohol 0.1-0.3% by weight.
4, the technology of producing polyvinyl alcohol film by roller process as claimed in claim 1 is characterized in that describedly the epithelium of taking off after the roller film forming also can be carried out modification handling; The epithelium modification is to adopt known high temperature to add the water stretch processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01131745 CN1411971A (en) | 2001-10-11 | 2001-10-11 | Production process of polyvinyl alcohol film by usind drum method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01131745 CN1411971A (en) | 2001-10-11 | 2001-10-11 | Production process of polyvinyl alcohol film by usind drum method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1411971A true CN1411971A (en) | 2003-04-23 |
Family
ID=4670827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01131745 Pending CN1411971A (en) | 2001-10-11 | 2001-10-11 | Production process of polyvinyl alcohol film by usind drum method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1411971A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367953B (en) * | 2008-08-14 | 2011-04-20 | 世源科技(嘉兴)医疗电子有限公司 | Process for preparing water-soluble polyvinyl alcohol film |
| CN105418949A (en) * | 2016-01-11 | 2016-03-23 | 云南云天化股份有限公司 | Preparing method for polyvinyl alcohol film |
-
2001
- 2001-10-11 CN CN 01131745 patent/CN1411971A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367953B (en) * | 2008-08-14 | 2011-04-20 | 世源科技(嘉兴)医疗电子有限公司 | Process for preparing water-soluble polyvinyl alcohol film |
| CN105418949A (en) * | 2016-01-11 | 2016-03-23 | 云南云天化股份有限公司 | Preparing method for polyvinyl alcohol film |
| CN105418949B (en) * | 2016-01-11 | 2018-04-03 | 云南云天化股份有限公司 | A kind of preparation method of polyvinyl alcohol film |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| C52 | Restoration of the patent application or patent right (restoration of the patent application) | ||
| RA01 | Restoration of patent right |
Former decision: The invention shall be deemed to be withdrawn after the publication of the application for patent |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20030423 |
|
| CI01 | Publication of corrected invention patent application |
Correction item: Rejection of patent application Correct: Dismiss False: Reject Number: 31 Volume: 26 |
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| ERR | Gazette correction |
Free format text: CORRECT: PATENT APPLICATION REJECTION AFTER PUBLICATION; FROM: REJECTION TO: REJECTION OF REVOCATION |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20030423 |