CN109366800A - The recoverying and utilizing method of egative film - Google Patents
The recoverying and utilizing method of egative film Download PDFInfo
- Publication number
- CN109366800A CN109366800A CN201710653255.1A CN201710653255A CN109366800A CN 109366800 A CN109366800 A CN 109366800A CN 201710653255 A CN201710653255 A CN 201710653255A CN 109366800 A CN109366800 A CN 109366800A
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- CN
- China
- Prior art keywords
- egative film
- aqueous slkali
- recoverying
- utilizing method
- emulsion
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0412—Disintegrating plastics, e.g. by milling to large particles, e.g. beads, granules, flakes, slices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
- B29B2017/0213—Specific separating techniques
- B29B2017/0293—Dissolving the materials in gases or liquids
- B29B2017/0296—Dissolving the materials in aqueous alkaline solutions, e.g. NaOH or KOH
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/044—Knives
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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
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
-
- 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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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
A kind of recoverying and utilizing method of egative film, comprising: the egative film is subjected to break process, the egative film includes polyester resin chip base and the emulsion that is formed in the chip base, contains Argent grain in the emulsion；The broken egative film is immersed in the aqueous slkali that temperature is 10 DEG C -60 DEG C, so that the aqueous slkali is dissolved the emulsion of the egative film, so that the Argent grain in the emulsion be made to fall off from the egative film；The egative film is taken out and cleaned from the aqueous slkali, to obtain polyester resin chip base；And the filtering aqueous slkali, to obtain Argent grain.
Description
Technical field
The present invention relates to a kind of devil liquor recoveries to utilize field more particularly to a kind of recoverying and utilizing method of egative film.
Background technique
In field of printed circuit board fabrication, it usually needs route up to specification is photosensitive to egative film, it is made after punching
Negative film, in post-exposure developing process, the line pattern on negative film be will transfer on circuit substrate.The chip base of black and white negative film
Main ingredient is polyester resin (such as PET), is coated with single-layer or multi-layer emulsion in chip base.The composition of the emulsion is bright
Glue (Gelatin) and the silver halide being suspended in gelatin (Silver halide).During punching, partially halogenated silver sense
Light and the metallic silver particles for being changed into black are fixed on chip base after developed, fixation process, and not photosensitive silver halide is then fixed
Fixing solution is dissolved in when shadow.Such egative film has pollution to environment, it usually needs could be abandoned, be kept away after handling negative film
Exempt to pollute the environment, and the treatment process (such as incineration method, nitric acid dousing method) of egative film can generate a large amount of noxious products.
Summary of the invention
In view of this, being able to solve problem above it is necessary to provide a kind of recoverying and utilizing method of egative film.
The present invention provides a kind of recoverying and utilizing method of egative film, comprising: the egative film is carried out break process, the egative film
Including polyester resin chip base and the emulsion being formed in the chip base, contain Argent grain in the emulsion；It will break
The egative film after broken is immersed in the aqueous slkali that temperature is 10 DEG C -60 DEG C, and the aqueous slkali is made to dissolve the sense of the egative film
X-ray emulsion X, so that the Argent grain in the emulsion be made to fall off from the egative film；By the egative film from the aqueous slkali
It takes out and cleans, to obtain polyester resin chip base；And the filtering aqueous slkali, to obtain Argent grain.
The recoverying and utilizing method of above-mentioned egative film just can be made on the egative film by adding the broken egative film of aqueous slkali
Argent grain fall off, acid gas will not be generated, any noxious products will not be generated.
Specific embodiment
A better embodiment of the invention provides a kind of recoverying and utilizing method of egative film, for egative film (such as photographic negative
Or wiring board egative film) carry out regeneration.The recoverying and utilizing method of the egative film includes the following steps:
Step 1: the egative film is subjected to break process.Wherein, the egative film includes polyester resin chip base and is formed in
Emulsion in the chip base.Contain Argent grain in the emulsion.
In the present embodiment, break process is carried out to the egative film using crusher or shredder.
In the present embodiment, the material of the polyester resin chip base is polyethylene terephthalate (PET).
In the present embodiment, stop broken place again when irregular gauffer is presented in the surface for observing the broken egative film
Reason.Wherein, the shredder with twin axle cutter can be used to carry out break process to the egative film, which, which has, turns round
Rotating function can reverse the egative film for helical form in shattering process, so that the surface of the broken egative film be made to present
Irregular gauffer.It is appreciated that can be avoided subsequent step when irregular gauffer is presented in the surface of the broken egative film
Mediella stick to each other and make aqueous slkali come into full contact with the backsheet surface (ginseng following step two), lead to not the bottom of sufficiently
The Argent grain of on piece dissolves.
Step 2: the broken egative film is immersed in the aqueous slkali that temperature is 10 DEG C -60 DEG C, makes the alkali soluble
Liquid dissolves the emulsion of the egative film, so that the Argent grain in the emulsion be made to fall off from the egative film.
In the present embodiment, the aqueous slkali can be sodium hydroxide solution, potassium hydroxide solution or calcium hydroxide solution
Deng.The mass concentration of alkali is 1%-65% in the aqueous slkali.
Wherein, when the broken egative film to be immersed in aqueous slkali, to the aqueous slkali for having the egative film
It is stirred or is aerated, so that the aqueous slkali be made sufficiently to dissolve the emulsion of the egative film.
Step 3: the egative film is taken out and is cleaned from the aqueous slkali, to obtain polyester resin chip base.
In the present embodiment, when observation egative film becomes colorless transparent, judge Argent grain completely from the egative film
It falls off, at this time takes out the egative film from the aqueous slkali.
In the present embodiment, using egative film described in aqueous cleaning.
Step 4: filtering the aqueous slkali, to obtain Argent grain.
In the present embodiment, the aqueous slkali is filled in an accommodation groove, and the slot bottom of the accommodation groove is equipped with circulation
Filter pump, the cycle filter pump is for filtering the aqueous slkali.Wherein, the egative film can taken out simultaneously from the aqueous slkali
The cycle filter pump is opened after cleaning, so that it be made to filter the aqueous slkali.
The present invention is specifically described below by embodiment.
Embodiment 1
The egative film is placed in crusher and carries out break process.Take 0.5m3Broken egative film be immersed in and have
1m3Aqueous slkali (concentration 15%) accommodation groove in, the slot bottom of accommodation groove is aerated at normal temperature, estimates egative film after 25 minutes
It becomes colorless transparent, the egative film is taken out and washed from the aqueous slkali.The cycle filter pump of opening groove bottom installation is to alkali
Solution is filtered, and obtains Argent grain.
Embodiment 2
The egative film is placed in crusher and carries out break process.Take 0.5m3Broken egative film be immersed in and have
0.5m3Aqueous slkali (concentration 10%) accommodation groove in, the aqueous slkali is stirred, and heat the accommodation groove to 40
DEG C, range estimation egative film becomes colorless transparent after twenty minutes, and the egative film is taken out and washed from the aqueous slkali.Unlatching is circulated throughout
Filter pump is filtered aqueous slkali, obtains Argent grain.
Embodiment 3
The egative film is placed in crusher and carries out break process.Take 0.5m3Broken egative film be immersed in and have
1m3Aqueous slkali (concentration 30%, pH 14) accommodation groove in, the aqueous slkali is stirred at normal temperature, 15 minutes
Range estimation egative film becomes colorless transparent afterwards, and the egative film is taken out and washed from the aqueous slkali.Cycle filter pump is opened to alkali
Solution is filtered, and obtains Argent grain.
The recoverying and utilizing method of above-mentioned egative film passes through at a lower temperature (such as 25 DEG C of room temperature) plus the broken institute of aqueous slkali
Egative film is stated, just the Argent grain on the egative film can be made to fall off, cost recovery is low, operates relatively simple, safety.Obtained polyester
Resin chip base (can be used as clothes raw material) and Argent grain can directly be sold, and sale price is higher than untreated egative film.Furthermore it is above-mentioned
The recoverying and utilizing method of egative film will not generate acid gas, will not generate any noxious products.When the concentration of aqueous slkali and factory's acid
Property waste water concentration (30%) it is consistent when, the aqueous slkali after use also can be directly used for neutralize factory's acid waste water.
It is understood that for those of ordinary skill in the art, can do in accordance with the technical idea of the present invention
Various other changes and modifications out, and all these changes and deformation all should belong to the protection model of the claims in the present invention
It encloses.
Claims (8)
1. a kind of recoverying and utilizing method of egative film, comprising:
The egative film is subjected to break process, the egative film includes polyester resin chip base and is formed in photosensitive in the chip base
Emulsion contains Argent grain in the emulsion；
The broken egative film is immersed in the aqueous slkali that temperature is 10 DEG C -60 DEG C, is made described in the aqueous slkali dissolution
The emulsion of egative film, so that the Argent grain in the emulsion be made to fall off from the egative film；
The egative film is taken out and cleaned from the aqueous slkali, to obtain polyester resin chip base；And
The aqueous slkali is filtered, to obtain Argent grain.
2. the recoverying and utilizing method of egative film as described in claim 1, which is characterized in that use the shredded paper with twin axle cutter
Machine carries out break process to the egative film.
3. the recoverying and utilizing method of egative film as described in claim 1, which is characterized in that the material of the polyester resin chip base is
Polyethylene terephthalate.
4. the recoverying and utilizing method of egative film as described in claim 1, which is characterized in that the aqueous slkali is that sodium hydroxide is molten
One of which in liquid, potassium hydroxide solution and calcium hydroxide solution.
5. the recoverying and utilizing method of egative film as described in claim 1, which is characterized in that the mass concentration of alkali in the aqueous slkali
For 1%-65%.
6. the recoverying and utilizing method of egative film as described in claim 1, which is characterized in that submerged when by the broken egative film
When in aqueous slkali, the aqueous slkali with the egative film is stirred or is aerated.
7. the recoverying and utilizing method of egative film as described in claim 1, which is characterized in that when observation egative film become colorless it is transparent
When, the egative film is taken out from the aqueous slkali.
8. the recoverying and utilizing method of egative film as described in claim 1, which is characterized in that the aqueous slkali is filled in an accommodation groove
In, and the slot bottom of the accommodation groove is equipped with cycle filter pump, the cycle filter pump is for filtering the aqueous slkali.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710653255.1A CN109366800A (en) | 2017-08-02 | 2017-08-02 | The recoverying and utilizing method of egative film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710653255.1A CN109366800A (en) | 2017-08-02 | 2017-08-02 | The recoverying and utilizing method of egative film |
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| Publication Number | Publication Date |
|---|---|
| CN109366800A true CN109366800A (en) | 2019-02-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710653255.1A Pending CN109366800A (en) | 2017-08-02 | 2017-08-02 | The recoverying and utilizing method of egative film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466090A (en) * | 2019-09-10 | 2019-11-19 | 珠海市安能环保科技有限公司 | A method of recycling silver and PET film from HW16 waste photographic film |
| CN115515769A (en) * | 2020-05-15 | 2022-12-23 | Dic株式会社 | Recycling system for recycling plastic laminate into recycled raw material, recycling method, and method for separating and recovering laminate |
| EP4129675A4 (en) * | 2020-03-31 | 2024-03-06 | Mitsubishi Chem Corp | Polyester recycling system and recycling method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125498A (en) * | 2016-08-27 | 2016-11-16 | 盛隆资源再生（无锡）有限公司 | A kind of waste photographic film reclaims the method for silver and chip base |
-
2017
- 2017-08-02 CN CN201710653255.1A patent/CN109366800A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125498A (en) * | 2016-08-27 | 2016-11-16 | 盛隆资源再生（无锡）有限公司 | A kind of waste photographic film reclaims the method for silver and chip base |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110466090A (en) * | 2019-09-10 | 2019-11-19 | 珠海市安能环保科技有限公司 | A method of recycling silver and PET film from HW16 waste photographic film |
| CN110466090B (en) * | 2019-09-10 | 2021-03-30 | 珠海市安能环保科技有限公司 | Method for recovering silver and PET (polyethylene terephthalate) film from HW16 waste photosensitive film |
| EP4129675A4 (en) * | 2020-03-31 | 2024-03-06 | Mitsubishi Chem Corp | Polyester recycling system and recycling method |
| CN115515769A (en) * | 2020-05-15 | 2022-12-23 | Dic株式会社 | Recycling system for recycling plastic laminate into recycled raw material, recycling method, and method for separating and recovering laminate |
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Application publication date: 20190222 |