CN102585582B - Solution and method for stripping protective adhesive layer and printing layer of optical disc - Google Patents
Solution and method for stripping protective adhesive layer and printing layer of optical disc Download PDFInfo
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- CN102585582B CN102585582B CN2012100448502A CN201210044850A CN102585582B CN 102585582 B CN102585582 B CN 102585582B CN 2012100448502 A CN2012100448502 A CN 2012100448502A CN 201210044850 A CN201210044850 A CN 201210044850A CN 102585582 B CN102585582 B CN 102585582B
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- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
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Abstract
The invention relates to a solution and a method for stripping a protective adhesive layer and a printing layer of an optical disc. The solution comprises the following components in parts by weight: (a) 50-80 parts of soft water; (b) 20-50 parts of alcohol; (c) alkali or basic salt accounting for 5-15% of the total weight of the components (a) and (b); and (d) surfactant accounting for 0.5-5.5% of the total weight of the components (a) and (b). The solution and the method for stripping the protective adhesive layer and the printing layer of the optical disc have the following technical advantages that the stripping rate and transparency of the protective adhesive layer and the printing layer of the optical disc are high, polycarbonate (PC) on the optical disc is not influenced in the treatment process, the method is easy to operate, and the solution for stripping the protective adhesive layer and the printing layer of the optical disc can be recycled.
Description
Technical field
The present invention relates to a kind of chemical reagent, particularly, relate to a kind of solution of peeling off CD protecting glue-line and printed layers, and the method for peeling off CD protecting glue-line and printed layers.
Background technology
CD is widely used in IT industry, and along with the increase of useless CD quantity, the CD Solid Waste Pollution will attract much attention.Only in China, all kinds of CD sums that using have reached more than 500,000,000.But the maturation of a new technology is in also its decline closes on just.Along with the aggravation that CD is already competed, the CD of higher store content constantly replaces old dish; Simultaneously, because improper use, or the aging and CD content upgrading of the material of CD own, reasons such as old dish forfeiture use value have also produced a large amount of useless dishes.According to statistics, generally use the life-span of class CD only to be 1-2.The taking back and process of useless CD just must become the problem that people should consider.
Can adopt following method to the CD process in plastics: (1) plastics banket; (2) burning and removal of impurities; (3) fusing, refining and removal of impurities.Before the CD plastics were handled, preferably elder generation stripped down protection glue-line and the printed layers of CD, so that the recovery in CD later stage and modification.At present, can use NaOH solution at a certain temperature, the printed layers on the DVD CD is stripped down; It is water-soluble perhaps to generate sodium metaaluminate with NaOH solution and reactive aluminum, and protection glue-line and printed layers on the CD CD are stripped down; Perhaps use nitric acid water-soluble with silver, protection glue-line and printed layers on the CD-R CD are stripped down.
Patent CN200810116966.6 mentions a kind of method that reclaims the abandoned optical discs substrate, wherein relates to: a) CD is placed the aqueous solution that contains subsalt or alkali and alcohol to carry out swelling treatment; B) from the aqueous solution, tell compact disc substrate; C) filtering solution is to tell metal wherein, and evaporated filtrate is to reclaim alcohol.
The shortcoming that prior art exists is: not easy to operate, the protection glue-line of CD and printed layers have residual, and the polycarbonate in the treating processes on the CD (PC) is affected its colour changed into yellow.
Summary of the invention
The present invention is in order to solve the problems of the technologies described above, and one of purpose is to provide a kind of solution of peeling off CD protecting glue-line and printed layers.
Another object of the present invention is to provide a kind of method of peeling off CD protecting glue-line and printed layers.
A kind of solution of peeling off CD protecting glue-line and printed layers provided by the invention comprises following component by weight:
(a) 80～50 parts of soft water;
(b) 20～50 parts of alcohol;
(c) account for 5～15% alkali or subsalt of composition (a) and (b) gross weight; And
(d) account for 0.5～5.5% tensio-active agent of composition (a) and (b) gross weight.
A kind of solution of peeling off CD protecting glue-line and printed layers provided by the invention preferably, comprises following component by weight:
(a) 70～60 parts of soft water;
(b) 30～40 parts of alcohol;
(c) account for 8～12% alkali or subsalt of composition (a) and (b) gross weight; And
(d) account for 2～3% tensio-active agent of composition (a) and (b) gross weight.
A kind of solution of peeling off CD protecting glue-line and printed layers provided by the invention more preferably, comprises following component by weight:
(a) 65 parts of soft water;
(b) 35 parts of alcohol;
(c) account for 10% alkali or subsalt of composition (a) and (b) gross weight; And
(d) account for 2.5% tensio-active agent of composition (a) and (b) gross weight.
Wherein, described alcohol is: methyl alcohol, ethanol, n-propyl alcohol, propyl carbinol, Pentyl alcohol, n-hexyl alcohol, n-Heptyl alcohol, Virahol, isopropylcarbinol, the trimethyl carbinol or ethylene glycol etc.Preferred tertiary butanols or ethanol.
The concentration of described alcohol is 50～95% (mass percents).
Wherein, described alkali is: sodium hydroxide or potassium hydroxide.Described subsalt is sulphite, hypochlorite, oxymuriate, phosphoric acid salt, silicate, carbonate or nitrate.
Further, described subsalt is: S-WAT, clorox, sodium chlorate, sodium phosphate, water glass, yellow soda ash, SODIUMNITRATE, potassium sulfite, potassium hypochlorite, Potcrate, potassiumphosphate, potassium silicate, salt of wormwood or saltpetre.Preferably: SODIUMNITRATE or yellow soda ash.
The concentration of described alkali is 30～50% (mass percents).
Wherein, described tensio-active agent is: stearic acid (octadecanoic acid), Sodium dodecylbenzene sulfonate, quaternized thing Yelkin TTS, amino acid type surfactant, betaine type amphoteric surfactant, glycerin fatty acid ester, the smooth or polysorbate of lipid acid sorb.
Further, described amino acid type surfactant is: sodium dodecyl aminopropionitrile.Described betaine type amphoteric surfactant is: empgen BB.Described glycerin fatty acid ester is: Glycerin, mixed triester with caprylic acid capric acid, triolein, palmitin or tristearin.Described lipid acid sorb is smooth to be: sorbitan laurate, Sorbitan Palmitate or sorbitan stearate.
Described tensio-active agent is preferred: stearic acid, Sodium dodecylbenzene sulfonate, quaternized thing Yelkin TTS or Glycerin, mixed triester with caprylic acid capric acid.
A kind of method of peeling off CD protecting glue-line and printed layers provided by the invention; comprise: CD is ground into the CD fragment; put into container; add the described solution of peeling off CD protecting glue-line and printed layers then; vessel temp is controlled at 40～60 ℃; stir the CD fragment, the CD fragment after protection glue-line and the printed layers is peeled off in taking-up at last.
The solution of peeling off CD protecting glue-line and printed layers that wherein uses carries out reclaiming use after the filtration treatment.
In the aforesaid method:
The pulverizing of described CD is that CD is ground into less than 0.05cm
2The CD fragment.
The control of described vessel temp is to use heating jacket to realize.
The stirring velocity of described stirring CD fragment is 200～400r/min.
The churning time of described stirring CD fragment is 30～300min.
The technical scheme advantage that the present invention peels off CD protecting glue-line and printed layers is as follows: the protection glue-line of CD and printed layers are peeled off rate and transparency height, and the polycarbonate in the treating processes on the CD (PC) is not affected; And easy to operate, the solution of peeling off CD protecting glue-line and printed layers can recycling use, is better than prior art.
Embodiment
Following examples are used for explanation the present invention, but are not used for limiting the scope of the invention.
Agents useful for same of the present invention is conventional reagent, can commercially obtain.
Embodiment 1
Peel off the solution component of CD protecting glue-line and printed layers: soft water 800g, 60% trimethyl carbinol 200g, 30% NaOH 50g, tensio-active agent (stearic acid) 5g.
Peel off the method for CD protecting glue-line and printed layers: CD is put into pulverizer be ground into 0.05cm
2The CD fragment; the CD fragment that obtains is put into the flask of 2000mL, add the solution for preparing then, make the control of flask temperature at 40 ℃ with heating jacket; stir CD fragment (stirring velocity 200r/min), take out the CD fragment of peeling off after protection glue-line and the printed layers behind the 300min.Solution carries out filtration treatment, reclaims and uses.
Embodiment 2
Peel off the solution component of CD protecting glue-line and printed layers: soft water 700g, 55% ethanol 300g, SODIUMNITRATE 80g, tensio-active agent (Sodium dodecylbenzene sulfonate) 20g.
Peel off the method for CD protecting glue-line and printed layers: with embodiment 1.
Embodiment 3
Peel off the solution component of CD protecting glue-line and printed layers: soft water 650g, 90% ethanol 350g, 40% NaOH 100g, tensio-active agent (quaternized thing Yelkin TTS) 2.5g.
Peel off the method for CD protecting glue-line and printed layers: with embodiment 1.
Embodiment 4
Peel off the solution component of CD protecting glue-line and printed layers: soft water 600g, 80% trimethyl carbinol 400g, 50% KOH 120g, tensio-active agent (Sodium dodecylbenzene sulfonate) 30g.
Peel off the method for CD protecting glue-line and printed layers: CD is put into pulverizer be ground into 0.05cm
2The CD fragment; the CD fragment that obtains is put into the flask of 2000mL, add the solution for preparing then, make the control of flask temperature at 50 ℃ with heating jacket; stir CD fragment (stirring velocity 350r/min), take out the CD fragment of peeling off after protection glue-line and the printed layers behind the 30min.Solution carries out filtration treatment, reclaims and uses.
Embodiment 5
Peel off the solution component of CD protecting glue-line and printed layers: soft water 650g, 95% trimethyl carbinol 350g, yellow soda ash 100g, tensio-active agent (glycerin fatty acid ester: 55g Glycerin, mixed triester with caprylic acid capric acid).
Peel off the method for CD protecting glue-line and printed layers: CD is put into pulverizer be ground into 0.03cm
2The CD fragment; the CD fragment that obtains is put into the flask of 2000mL, add the solution for preparing then, make the control of flask temperature at 60 ℃ with heating jacket; stir CD fragment (stirring velocity 400r/min), take out the CD fragment of peeling off after protection glue-line and the printed layers behind the 200min.Solution carries out filtration treatment, reclaims and uses.
Comparative Examples
Peel off the solution component of CD protecting glue-line and printed layers: soft water 650g, trimethyl carbinol 350g, NaOH 100g.
Peel off the method for CD protecting glue-line and printed layers: CD is placed contain above-mentioned solution and carry out swelling treatment (be warmed up to 65 ℃, stir after soaking 6h, stirring velocity is: 600r/min, churning time 2h); From this solution, take out the compact disc substrate washing; Filtering solution is to tell metal wherein, and evaporated filtrate is to reclaim alcohol.
CD after the processing:
Embodiment 1: and the basic noresidue protection glue-line in CD particle surface and printed layers (peel off rate: 92%), CD particle more transparent (transparency: inferior transparent), little Huang; The muddy burnt hair of solution, layering is apparent in view after leaving standstill; Process operation is simple.
Embodiment 2: (peel off rate: 93%), CD particle more transparent (transparency: inferior transparent) does not have jaundice for the basic noresidue protection glue-line in CD particle surface and printed layers; The muddy burnt hair of solution, layering is apparent in view after leaving standstill; Process operation is simple.
Embodiment 3: CD particle surface almost noresidue protection glue-line and printed layers (peel off rate: 99%), CD particle very bright, transparent (transparency: transparent) does not have jaundice; The muddy burnt hair of solution, layering is very obvious after leaving standstill; Process operation is simple.
Embodiment 4: (peel off rate: 91%), CD particle more transparent (transparency: inferior transparent) does not have jaundice for the basic noresidue protection glue-line in CD particle surface and printed layers; The muddy burnt hair of solution, layering is apparent in view after leaving standstill; Process operation is simple.
Embodiment 5: and the basic noresidue protection glue-line in CD particle surface and printed layers (peel off rate: 93%), CD particle more transparent (transparency: inferior transparent), little Huang; The muddy burnt hair of solution, layering is apparent in view after leaving standstill; Process operation is simple.
Comparative Examples: CD particle surface have small amount of residual protection glue-line and printed layers (peel off rate: 87%), CD particle more transparent (transparency: inferior transparent), little Huang; The muddy burnt hair of solution, layering is not obvious after leaving standstill; The process operation complexity.
Therefore, by above content as can be seen: the present invention is simpler than traditional operation, and the CD fragment after handling almost unprotect glue-line and printed layers are residual, peel off the rate height, fragment light, transparent.
Though above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements all belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (7)
1. method of peeling off CD protecting glue-line and printed layers, it is characterized in that, comprise: CD is ground into the CD fragment, put into container, add the solution of peeling off CD protecting glue-line and printed layers then, vessel temp control at 40～60 ℃, is stirred the CD fragment, and the CD fragment after protection glue-line and the printed layers is peeled off in taking-up at last;
The described solution of peeling off CD protecting glue-line and printed layers, formed by following component by weight:
(a) 65 parts of soft water;
(b) 35 parts of alcohol;
(c) account for 10% alkali or subsalt of composition (a) and (b) gross weight; And
(d) account for 2.5% tensio-active agent of composition (a) and (b) gross weight.
2. method according to claim 1 is characterized in that, described alcohol is: methyl alcohol, ethanol, n-propyl alcohol, propyl carbinol, Pentyl alcohol, n-hexyl alcohol, n-Heptyl alcohol, Virahol, isopropylcarbinol, the trimethyl carbinol or ethylene glycol.
3. method according to claim 1 is characterized in that, described alkali is: sodium hydroxide or potassium hydroxide; Described subsalt is: sulphite, hypochlorite, oxymuriate, phosphoric acid salt, silicate, carbonate or nitrate.
4. according to the method for claim 1, it is characterized in that described tensio-active agent is: stearic acid, Sodium dodecylbenzene sulfonate, quaternized thing Yelkin TTS, amino acid type surfactant, betaine type amphoteric surfactant, glycerin fatty acid ester, the smooth or polysorbate of lipid acid sorb.
5. according to any described method of claim 1～4, it is characterized in that, CD is ground into less than 0.05cm
2The CD fragment.
6. according to any described method of claim 1～4, it is characterized in that the stirring velocity of described stirring CD fragment is 200～400r/min.
7. according to any described method of claim 1～4, it is characterized in that the churning time of described stirring CD fragment is 30～300min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100448502A CN102585582B (en) | 2012-02-24 | 2012-02-24 | Solution and method for stripping protective adhesive layer and printing layer of optical disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100448502A CN102585582B (en) | 2012-02-24 | 2012-02-24 | Solution and method for stripping protective adhesive layer and printing layer of optical disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102585582A CN102585582A (en) | 2012-07-18 |
| CN102585582B true CN102585582B (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100448502A Expired - Fee Related CN102585582B (en) | 2012-02-24 | 2012-02-24 | Solution and method for stripping protective adhesive layer and printing layer of optical disc |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5306349A (en) * | 1992-11-23 | 1994-04-26 | Sony Music Entertainment, Inc. | Method for removing coatings from compact discs |
| JPH08257488A (en) * | 1995-03-24 | 1996-10-08 | Shinto Paint Co Ltd | Method for stripping coating film on coated polypropylene bumper |
| KR100401724B1 (en) * | 2000-12-05 | 2003-10-17 | 기아자동차주식회사 | Chemical method for removing paint film on plastic resin using iso-propyl alcohol |
| CN100516151C (en) * | 2006-09-12 | 2009-07-22 | 山西大学 | Basic paint remover and preparation method thereof |
| CN101157257A (en) * | 2007-11-22 | 2008-04-09 | 中国科学院过程工程研究所 | Method for reclaiming optical disk substrate from abandon optical disk |
| CN101318361B (en) * | 2008-07-22 | 2011-11-09 | 中国科学院过程工程研究所 | Method for recycling substrate from abandoned optical disk |
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| CN102585582A (en) | 2012-07-18 |
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