CN101863092B - Method for removing non-setting adhesive on surface of polyester film - Google Patents
Method for removing non-setting adhesive on surface of polyester film Download PDFInfo
- Publication number
- CN101863092B CN101863092B CN2010101973895A CN201010197389A CN101863092B CN 101863092 B CN101863092 B CN 101863092B CN 2010101973895 A CN2010101973895 A CN 2010101973895A CN 201010197389 A CN201010197389 A CN 201010197389A CN 101863092 B CN101863092 B CN 101863092B
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- Prior art keywords
- polyester film
- cleaning fluid
- adhesive sticker
- emulsifying agent
- cyclohexane
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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
Abstract
The invention relates to a method for removing the non-setting adhesive on the surface of a polyester film. The polyester film with the non-sitting adhesive and cleaning solution are stirred together and heated by a medium with the temperature of 60 DEG C to 100 DEG C, the non-setting adhesive on the surface of the polyester film is then washed off, and after being dried, the polyester film can be recycled; one of ethyl acetate, cyclohexane or tetrahydrofuran is mixed with water, and is then uniformly mixed with emulsifier, so that the cleaning solution is prepared, wherein the volume concentration of the ethyl acetate, the cyclohexane or the tetrahydrofuran is 0.05 to 0.40, and the mass concentration of the emulsifier is 1g/L to 10g/L; the volume ratio of the used cleaning solution to the treated polyester film with the non-setting adhesive is 2 to 3:1; and the emulsifier is one of sodium dodecyl sulfonate, polyvinyl alcohol, octylphenol ethoxylate and sorbitan monostearate. Compared with the method adopting washing powder, heating and braising, the method has the advantages of short time, water and electricity saving and little pollution, and can be industrialized.
Description
Technical field
The present invention relates to a kind of method of removing non-setting adhesive on surface of polyester film.
Background technology
The polyester adhesive label is widely used in the industries such as daily-use chemical industry, medicine packing and electronics at present.But the leftover pieces that preparation polyester adhesive label process produces go out of use usually, and the polyester film with adhesive sticker of recovery also goes out of use usually.This waste that not only causes polyester material is also to environment.Along with the reinforcement of people's environmental consciousness, the recovery of this polyester film receives publicity day by day.The method that reclaims at present this waste material is: putting into the polyester film of adhesive sticker after heating is boiled in the pot that contains a large amount of washing powder, and stewing 12 hours of less fire, then with strong mixer stirring, water cleans repeatedly again.Nonetheless, also be difficult to reach the purpose of thorough removing adhesive sticker.The method is consuming time, power consumption, waste water resource, and efficient is lower.The more important thing is, the phosphorus that contains in the washing powder is with causing to a certain degree pollution to environment after the sewage discharge.Therefore, need to seek a kind of method of removing non-setting adhesive on surface of polyester film efficient, practical, simple and easy and capable of being industrialized.
Summary of the invention
The objective of the invention is: a kind of method of removing non-setting adhesive on surface of polyester film efficient, practical, simple and easy and capable of being industrialized is provided.
The technical scheme that realizes the object of the invention is: a kind of method of removing non-setting adhesive on surface of polyester film, it is characterized in that, to stir with cleaning fluid with the polyester film of adhesive sticker and be that 60～100 ℃ medium heats with temperature, remove again the adhesive sticker of polyester film surface through flushing, be the polyester film that can recycle after drying;
Described cleaning fluid is to be mixed by a kind of and water in ethyl acetate, cyclohexane or the oxolane, adding emulsifying agent mixes and makes again, wherein the volumetric concentration of ethyl acetate, cyclohexane or oxolane is 0.05～0.40, and the mass concentration of emulsifying agent is 1～10 grams per liter;
The volume ratio of described cleaning fluid consumption and processed polyester film with adhesive sticker is 2～3: 1;
Described emulsifying agent is a kind of in dodecyl sodium sulfate, polyvinyl alcohol, Polyethylene Octylphenol Ether, the sorbitan monostearate;
Described adhesive sticker is the esters of acrylic acid adhesive.
In the said method, described polyester film with adhesive sticker is 1～4 hour with the time of cleaning fluid agitating heating.
The implementation step of said method is as follows:
1. prepare cleaning fluid
First a kind of and water in ethyl acetate, cyclohexane or the oxolane is mixed and add again emulsifying agent and mix and make cleaning fluid, wherein the volumetric concentration of ethyl acetate, cyclohexane or oxolane is 0.05～0.40, and the mass concentration of emulsifying agent is 1～10 grams per liter;
2. will shred with the polyester film of adhesive sticker, put into the reactor with heater and agitator, the cleaning fluid that 1. step is prepared adds in the container, and the volume ratio of its cleaning fluid consumption and processed polyester film with adhesive sticker is 2～3: 1;
3. starting the agitator of reactor, is that 60～100 ℃ medium heats with temperature simultaneously, stirs 1～4 hour at 60～100 ℃;
4. after material is down to room temperature in the reactor, takes out the polyester film water and wash to polyester film and be transparence, dry and be the polyester film that can recycle;
5. the residue in the reactor is removed solid residue after filtration, and remaining liquid is cleaning fluid, keep cleaning fluid and also recycle, perhaps with cleaning fluid distillation and moisture from, reclaim wherein organic matter.
In the said method, the agitator of described step in 3. is mechanical agitator.
Technique effect of the present invention is: technical scheme of the present invention adopts the cleaning fluid of special preparation to replace the employed washing powder of present method, therefore, has following advantage:
1. remove stewing material process from.
Because cleaning fluid contains ethyl acetate, cyclohexane or the oxolane of appropriate quantity, and suitable a small amount of emulsifying agent, directly flushing just can be removed adhesive sticker behind the heating agitator treating, does not need to be better than simple washing powder through stewing material process and clean result again;
2. save water.
Because cleaning fluid of the present invention contains suitable a small amount of emulsifying agent, can not produce a large amount of foams in the agitator treating process, the adhesive sticker that is washed is easy to wash out from polyester film surface;
3. cleaning fluid is convenient to reclaim and is recycling.
Because during heated scrub, control heating-up temperature so that in the cleaning fluid contained organic substance can not volatilize, therefore, the composition of cleaning fluid can not change during washing substantially, as long as fall solid through simple precipitate and separate, cleaning fluid is reusable edible, perhaps after separating solid behind the taking-up polyester film, cleaning fluid is through distillation also recyclable organic matter wherein, so special suitability for industrialized;
4. environmentally safe.
Owing to having replaced washing powder, the washing powder of discharging has also overcome because of washing powder and can not recycle impact on cost recovery the pollution of water body environment during therefore having avoided cleaning;
In a word, the inventive method production efficiency is high, water saving, environmental protection, has certain industrial prospect.
The specific embodiment
Below in conjunction with embodiment the present invention is further described in detail, but not limited.
The raw materials used generalization chemical product that is of embodiment can be buied through commercial channel;
The polyester film with adhesive sticker among the embodiment is the leftover pieces of manufacturer's production process, or the waste and old polyester film with adhesive sticker that reclaims.
The concrete steps of method that the present invention removes non-setting adhesive on surface of polyester film are as follows:
1. prepare cleaning fluid
First a kind of and water in ethyl acetate, cyclohexane or the oxolane is mixed and add again emulsifying agent and mix and make cleaning fluid, wherein the volumetric concentration of ethyl acetate, cyclohexane or oxolane is 0.05～0.40, and the mass concentration of emulsifying agent is 1～10 grams per liter;
2. will shred with the polyester film of adhesive sticker, put into the reactor with heater and agitator, the cleaning fluid that 1. step is prepared adds in the container, and the volume ratio of its cleaning fluid consumption and processed polyester film with adhesive sticker is 2～3: 1;
3. starting the agitator of reactor, is that 60～100 ℃ medium heats with temperature simultaneously, stirs 1～4 hour at 60～100 ℃;
4. after material is down to room temperature in the reactor, takes out the polyester film water and wash to polyester film and be transparence, dry and be the polyester film that can recycle;
5. the residue in the reactor is removed solid residue after filtration, and remaining liquid is cleaning fluid, keep cleaning fluid and also recycle, perhaps with cleaning fluid distillation and moisture from, reclaim wherein organic matter.
Described emulsifying agent is a kind of in dodecyl sodium sulfate, polyvinyl alcohol, Polyethylene Octylphenol Ether, the sorbitan monostearate.
Embodiment 1
1. prepare cleaning fluid
First ethyl acetate is mixed with water and add the emulsifying agent dodecyl sodium sulfate again and mix and make cleaning fluid, wherein the volumetric concentration of ethyl acetate is 0.06, and the mass concentration of emulsifying agent is 5 grams per liters;
2. will shred with the polyester film of adhesive sticker, put into the reactor with heater and agitator, the cleaning fluid that 1. step is prepared adds in the container, and the volume ratio of its cleaning fluid consumption and processed polyester film with adhesive sticker is 2: 1;
3. starting the agitator of reactor, is that 60～75 ℃ medium heats with temperature simultaneously, stirs 2 hours at 60～75 ℃;
4. after material is down to room temperature in the reactor, takes out the polyester film water and wash to polyester film and be transparence, dry and be the polyester film that can recycle;
5. the residue in the reactor is removed solid residue after filtration, and remaining liquid is cleaning fluid, and the reservation cleaning fluid also recycles;
When 1. step prepared cleaning fluid, used emulsifying agent also can use polyvinyl alcohol, Polyethylene Octylphenol Ether or sorbitan monostearate to replace.
Embodiment 2
1. prepare cleaning fluid
First cyclohexane is mixed with water and add the emulsifying agent sorbitan monostearate again and mix and make cleaning fluid, wherein the volumetric concentration of cyclohexane is 0.2, and the mass concentration of emulsifying agent is 2 grams per liters;
2. will shred with the polyester film of adhesive sticker, put into the reactor with heater and agitator, the cleaning fluid that 1. step is prepared adds in the container, and the volume ratio of its cleaning fluid consumption and processed polyester film with adhesive sticker is 3: 1;
3. starting the agitator of reactor, is that 70～80 ℃ medium heats with temperature simultaneously, stirs 1.5 hours at 70～80 ℃;
4. after material is down to room temperature in the reactor, takes out the polyester film water and wash to polyester film and be transparence, dry and be the polyester film that can recycle;
5. the residue in the reactor is removed solid residue after filtration, and remaining liquid is cleaning fluid, with cleaning fluid distillation and moisture from, reclaim wherein organic matter cyclohexane;
When 1. step prepared cleaning fluid, used emulsifying agent also can use dodecyl sodium sulfate, polyvinyl alcohol or Polyethylene Octylphenol Ether to replace.
Embodiment 3
1. prepare cleaning fluid
First oxolane is mixed with water and add the emulsifying agent polyvinyl alcohol again, mix and make cleaning fluid, wherein the volumetric concentration of oxolane is 0.4, and the mass concentration of emulsifying agent is 10 grams per liters;
2. will shred with the polyester film of adhesive sticker, put into the reactor with heater and agitator, the cleaning fluid that 1. step is prepared adds in the container, and the volume ratio of its cleaning fluid consumption and processed polyester film with adhesive sticker is 2.5: 1;
3. starting the agitator of reactor, is that 60～65 ℃ medium heats with temperature simultaneously, stirs 1.5 hours at 60～65 ℃;
4. after material is down to room temperature in the reactor, takes out the polyester film water and wash to polyester film and be transparence, dry and be the polyester film that can recycle;
5. the residue in the reactor is removed solid residue after filtration, and remaining liquid is cleaning fluid, with cleaning fluid distillation and moisture from, reclaim wherein organic matter oxolane;
When 1. step prepared cleaning fluid, used emulsifying agent also can use dodecyl sodium sulfate, Polyethylene Octylphenol Ether or sorbitan monostearate to replace.
Evidence the present invention compares with the present method of washing powder heating, stewing material that adopts, and has shortened the time, saves water power, has reduced environmental pollution, so that the polyester film Reuse of materials has actual industrial and is worth.
Claims (4)
1. method of removing non-setting adhesive on surface of polyester film, it is characterized in that, to stir with cleaning fluid with the polyester film of adhesive sticker and be that 60～100 ℃ medium heats with temperature, remove again the adhesive sticker of polyester film surface through flushing, be the polyester film that can recycle after drying;
Described cleaning fluid is to be mixed by a kind of and water in ethyl acetate, cyclohexane or the oxolane, adding emulsifying agent mixes and makes again, wherein the volumetric concentration of ethyl acetate, cyclohexane or oxolane is 0.05～0.40, and the mass concentration of emulsifying agent is 1～10 grams per liter;
The volume ratio of described cleaning fluid consumption and processed polyester film with adhesive sticker is 2～3: 1;
Described emulsifying agent is a kind of in polyvinyl alcohol, the Polyethylene Octylphenol Ether;
Described adhesive sticker is the esters of acrylic acid adhesive.
2. method according to claim 1 is characterized in that, described polyester film with adhesive sticker is 1～4 hour with the time of cleaning fluid agitating heating.
3. method according to claim 1 is characterized in that, the implementation step is as follows:
1. prepare cleaning fluid
First a kind of and water in ethyl acetate, cyclohexane or the oxolane is mixed, adding emulsifying agent mixes and makes cleaning fluid again, wherein the volumetric concentration of ethyl acetate, cyclohexane or oxolane is 0.05～0.40, and the mass concentration of emulsifying agent is 1～10 grams per liter;
2. will shred with the polyester film of adhesive sticker, put into the reactor with heater and agitator, the cleaning fluid that 1. step is prepared adds in the container, and the volume ratio of its cleaning fluid consumption and processed polyester film with adhesive sticker is 2～3: 1;
3. starting the agitator of reactor, is that 60～100 ℃ medium heats with temperature simultaneously, stirs 1～4 hour at 60～100 ℃;
4. after material is down to room temperature in the reactor, takes out the polyester film water and wash to polyester film and be transparence, dry and be the polyester film that can recycle;
5. the residue in the reactor is removed solid residue after filtration, and remaining liquid is cleaning fluid, keep cleaning fluid and also recycle, perhaps with cleaning fluid distillation and moisture from, reclaim wherein organic matter.
4. method according to claim 3 is characterized in that, the agitator of described step in 3. is mechanical agitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101973895A CN101863092B (en) | 2010-06-11 | 2010-06-11 | Method for removing non-setting adhesive on surface of polyester film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101973895A CN101863092B (en) | 2010-06-11 | 2010-06-11 | Method for removing non-setting adhesive on surface of polyester film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101863092A CN101863092A (en) | 2010-10-20 |
| CN101863092B true CN101863092B (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101973895A Expired - Fee Related CN101863092B (en) | 2010-06-11 | 2010-06-11 | Method for removing non-setting adhesive on surface of polyester film |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2486970C2 (en) * | 2011-08-17 | 2013-07-10 | Государственное унитарное предприятие "Калининградский янтарный комбинат" | Cleaning of amber |
| CN104148335A (en) * | 2014-07-31 | 2014-11-19 | 芜湖炬胜机电设备厂 | Method for removing adhesive labels from tableware |
| CN108384051A (en) * | 2018-03-22 | 2018-08-10 | 广东工业大学 | A kind of recovery method of safeguard film for cellular phone base material and its application |
| CN108359126A (en) * | 2018-03-29 | 2018-08-03 | 四川大学 | A kind of degumming recovery method of polyethylene terephthalate protective film waste material |
| CN114927647A (en) * | 2022-05-31 | 2022-08-19 | 中国华能集团清洁能源技术研究院有限公司 | Preparation method of anode material and cathode material and lithium ion battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6240935B1 (en) * | 2000-03-30 | 2001-06-05 | The Boeing Company | Boelube R dissolving alkaline cleaning solution |
| CN1618940A (en) * | 2004-09-23 | 2005-05-25 | 金华职业技术学院 | Water base cleaning agent for pressure sensitive adhesive |
| CN101016499A (en) * | 2007-01-26 | 2007-08-15 | 顺德职业技术学院 | Water-based cleaning agent for pressure-sensitive adhesive residues |
| CN101186864A (en) * | 2007-11-09 | 2008-05-28 | 大连工业大学 | Degumming agent and method for removing bottom glue at plastic surface by using the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006043494A (en) * | 2004-07-30 | 2006-02-16 | Okasan Livic Co Ltd | Cleaning method for particulate absorbing contaminant and its apparatus |
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2010
- 2010-06-11 CN CN2010101973895A patent/CN101863092B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6240935B1 (en) * | 2000-03-30 | 2001-06-05 | The Boeing Company | Boelube R dissolving alkaline cleaning solution |
| CN1618940A (en) * | 2004-09-23 | 2005-05-25 | 金华职业技术学院 | Water base cleaning agent for pressure sensitive adhesive |
| CN101016499A (en) * | 2007-01-26 | 2007-08-15 | 顺德职业技术学院 | Water-based cleaning agent for pressure-sensitive adhesive residues |
| CN101186864A (en) * | 2007-11-09 | 2008-05-28 | 大连工业大学 | Degumming agent and method for removing bottom glue at plastic surface by using the same |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2006-43494A 2006.02.16 |
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