CN1685109A - Recyclable moisture proof packaging paper - Google Patents
Recyclable moisture proof packaging paper Download PDFInfo
- Publication number
- CN1685109A CN1685109A CN02829711.3A CN02829711A CN1685109A CN 1685109 A CN1685109 A CN 1685109A CN 02829711 A CN02829711 A CN 02829711A CN 1685109 A CN1685109 A CN 1685109A
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- China
- Prior art keywords
- paper
- calcium carbonate
- packaging paper
- water vapor
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- 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.)
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/16—Sizing or water-repelling agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/38—Coatings with pigments characterised by the pigments
- D21H19/385—Oxides, hydroxides or carbonates
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/52—Cellulose; Derivatives thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/56—Macromolecular organic compounds or oligomers thereof obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H19/58—Polymers or oligomers of diolefins, aromatic vinyl monomers or unsaturated acids or derivatives thereof
Landscapes
- Paper (AREA)
Abstract
A recyclable moistureproof packaging paper for, e,g. copying papers for photographic printing which is obtained by coating a raw paper on one side with a moistureproof layer comprising or formed from the following ingredients (1) to (3): fine calcium carbonate particles, a thin polymer film which has been formed from an allyl acrylate emulsion and hydroxyethyl cellulose and with which the individual fine calcium carbonate particles are coated, and synthetic rubber latex obtained from a conjugated diene compound and other compound(s) copolymerizable therewith. The moistureproof packaging paper is odorless. In particular, the moistureproof layer is almost equal in moisture resistance and water repellency to the polyethylene layer in polyethylene laminates.
Description
Technical field
The present invention relates to be used for the recyclable moisture proof packaging paper of photoelectricity printing with copy paper etc., further detailed saying relates to its damp course and has and the moisture resistance of polyethylene lamination layer same degree and the recyclable moisture proof packaging paper of water proofing property.
Background technology
In recent years, the discarded object problem becomes a global big problem.This is because be not that all waste thing can be accepted by environment.Thereby, from preventing the pollution of the environment and reducing viewpoint such as discarded object, wish that water vapor proof barrier packaging paper also can use in recirculation.
The mode that water vapor proof barrier packaging paper is general to adopt one side at brown paper that damp course is set is made, and as this damp course, considers the polyethylene that use from the angle of moisture resistance excellence more.
Use water vapor proof barrier packaging paper for recirculation, paper must possess following characteristic, and it is less that promptly the paper pulp of paper dissociates in filament and the gained paper pulp other tramp materials fully again.Obtain paper pulp even want by the pulp processing operation this polyethylene lamination water vapor proof barrier packaging paper to be dissociated again, because of disassociation fully of paper pulp, institute is so that its state that is separated into again paper pulpization or raw material paper pulp is very difficult.And polyethylene can be blended into machine hand's preface.One of its reason is exactly, good moisture resistance and water proofing property that polyethylene had, with brown paper is dissociated again after again during paper pulp desired character be opposite character.
Therefore, polyethylene lamination water vapor proof barrier packaging paper all is processed into industrial waste basically.
On the other hand, water vapor proof barrier packaging paper as easy recirculation, known useful paraffin is as damp course, though this water vapor proof barrier packaging paper is compared recirculation easily with polyethylene lamination wrapping paper, transfer to packed article easily and descend the degradation shortcoming easily but have paraffin, so except specific use, also be not practical in its moisture resistance of folding line place.
Yet the photograph printing paper requires special trait with water vapor proof barrier packaging paper.This is the moisture content low (moisture content is about 4.5～5%) because of the photograph printing paper, and this character is necessary for carrying out the high-resolution printing with the phase plate printer.For the moisture content that makes the photograph printing paper is maintained at about 4.5～5%, use the water vapor proof barrier packaging paper that carries out lamination by polyethylene so far with good moisture resistance and water proofing property.But, as mentioned above, be difficult to recirculation owing to carry out the water vapor proof barrier packaging paper of lamination by polyethylene, cause environmental problem, and the goods of paraffin as damp course, not only its paraffin is transferred on the photograph printing paper, and can moisture resistance be reduced from folding line, therefore can't be as the water vapor proof barrier packaging paper of photograph printing paper.
In order to solve the problem that above-mentioned water vapor proof barrier packaging paper exists, as the spy open disclose in the flat 9-21069 communique a kind of use pigment as aspect ratio more than 5 and average grain diameter be containing of the talcum of 5 μ m～50 μ m or mica and filler and styrene butadiene ribber latex (SBR) proportional with weight ratio count 30: 70～70: 30 goods are as the water vapor proof barrier packaging paper of damp course.
Similarly opened and put down in writing a kind of damp course in the flat 9-21094 communique for being coated on the body paper and dry formed moisture resistance paper mix the water soluble emulsion composite that forms by synthetic rubber latex and wax emulsion the spy, its synthetic rubber latex has used in the presence of the corrective of alkali-soluble polymer, the article that obtained by conjugated diene compound and the monomer emulsions copolymerization that can constitute with other compounds of conjugated diene compound copolymerization.
Disclosure of an invention
But, aforesaid known water vapor proof barrier packaging paper, because SBR content is many, so in the recirculation operation, need the deinking operation, and when copying paper, if directly copy the problem that can there be disconnected paper in paper, so and because there is adhesion problem in thermoplasticity, be not suitable as photograph printing paper recyclable moisture proof packaging paper fully.
People of the present invention carry out various researchs repeatedly in order to address this problem, finally applied for the patent of PCT/JP02/05937, promptly about the water vapor proof barrier packaging paper of coating following substances, this material refers to form the tectal material that is made of allyl acrylate emulsion and ester polymer at each particle surface of the calcium carbonate through being commonly used for filler.
The invention of above-mentioned patent application (below be called " in first to file invention ") but in recirculation water vapor proof barrier packaging paper specifically possess the material of following formation:
(I) but a kind of recirculation water vapor proof barrier packaging paper is characterized in that the one side of paper scribbles the damp course that contains following (1)～(3) composition at least.
(1) calcium carbonate microparticle;
(2) cover the film that forms by allyl acrylate emulsion and ester polymer of above-mentioned each calcium carbonate microparticle;
(3) by the synthetic rubber latex that can constitute with other compounds of conjugated diene compound copolymerization.
(II) as (I) but described recirculation water vapor proof barrier packaging paper it is characterized in that, as above-mentioned calcium carbonate microparticle, be contained in the above-mentioned damp course as main component and above-mentioned calcium carbonate microparticle ratio with 40～60 weight % with the material of particle diameter below 2 μ m.
(III) as (I) but or (II) described recirculation water vapor proof barrier packaging paper, it is characterized in that above-mentioned ester polymer is formed by acrylic acid and propylene glycol.
(IV) as (III) but described recirculation water vapor proof barrier packaging paper, it is characterized in that, the thin polymer film that covers above-mentioned each calcium carbonate microparticle is the film that is made of allyl acrylate emulsion and the ester polymer that formed by acrylic acid and propylene glycol, contains allyl acrylate emulsion 10～20 weight %, acrylic acid 2～5 weight % and propylene glycol 1～3 weight % in the above-mentioned damp course.
(V) as (I) but～any described recirculation water vapor proof barrier packaging paper in (IV), it is characterized in that, by the synthetic rubber latex that can constitute, in above-mentioned damp course, contain the styrene butadiene ribber latex of 20～40 weight % with other compounds of conjugated diene compound copolymerization.
Above-mentioned in the first to file invention; constitute by adopting as mentioned above, even but can play obtain overlay have with the moisture resistance of polyethylene lamination layer same degree and water proofing property and process recycling in do not separate paper pulp, easily recycled pulps part and damp course composition and have the good moisture resistance of the photograph printing paper that can adequately protect and the excellent effect of the recirculation water vapor proof barrier packaging paper of water proofing property yet.
Above-mentionedly be characterised in that in first to file invention, be not that calcium carbonate particle himself has moisture resistance or water proofing property, but, give calcium carbonate particle with moisture resistance and water proofing property by forming the cover layer that constitutes by allyl acrylate emulsion and the ester polymer that forms by acrylic acid and propylene glycol.
But, how many above-mentioned ester polymers that is formed by allyl acrylate emulsion and acrylic acid and propylene glycol in preceding application invention exists some smells, therefore, then exist its smell will be attached to problem on the packed article if use above-mentioned water vapor proof barrier packaging paper in the first to file invention.
Therefore, many-sides such as the inventor are explored not to be had smell and can obtain at least to invent the calcium carbonate particle the given moisture resistance of equal effect and the cover layer of water proofing property with above-mentioned in first to file, finally, if find to adopt the cover layer of the polymer formation that forms by allyl acrylate emulsion and hydroxyethylcellulose (HEC), then not only there is not smell, and can be can obtain same effect at first to file invention coating amount still less, so that finish the present invention than above-mentioned as damp course.
But the present invention is a kind of recirculation water vapor proof barrier packaging paper, it is characterized in that, the one side of paper scribbles by the damp course that contains following (1)～(3) composition at least.
(1) calcium carbonate microparticle;
(2) cover the polymer thin film that forms by allyl acrylate emulsion and hydroxyethylcellulose of above-mentioned each calcium carbonate microparticle;
(3) by the synthetic rubber latex that can constitute with other compounds of conjugated diene compound copolymerization.
In such scheme, the particle diameter of calcium carbonate microparticle is a main component with the material below the 2 μ m preferably, and its content preferably contains 40～60 weight % in damp course.If the material that particle diameter is big in the calcium carbonate microparticle is too much, then the flatness of damp course descends and becomes the reason that moisture resistance descends, and, if the content of calcium carbonate microparticle is too much, can split when then damp course is too stiff and folding, become the reason that moisture resistance descends.On the contrary, if the content of calcium carbonate microparticle is very few, then the content of synthetic rubber latex is too much relatively, be difficult to obtain recirculation good use paper.
Cover the ratio of the polymer of calcium carbonate microparticle, preferably in damp course, contain allyl acrylate 10～25 weight %, hydroxyethylcellulose 0.2～2 weight %.Can give calcium carbonate microparticle in the time of in this scope with good moisture resistance and water proofing property.
In addition,, can put into calcium carbonate microparticle in the water-based emulsion solution of aforesaid propylene allyl propionate and hydroxyethylcellulose, after fully mixing, separate calcium carbonate microparticle and dry in order to cover calcium carbonate microparticle with above-mentioned thin polymer film.
As being used to the above-mentioned adhesive that is coated with the calcium carbonate microparticle of polymer that mutually combines, can use by the synthetic rubber latex that can constitute with other compounds of conjugated diene compound copolymerization.Conjugated diene compound can use 1,3-butadiene, isoprene, 2,3-dimethyl-1,3-butadiene etc., wherein preferred 1,3-butadiene.Also have, as can with other compounds of conjugated diene compound copolymerization, can use aromatic ethenyl compounds such as styrene, methyl styrene, vinyltoluene, especially optimization styrene.
As being used for synthetic rubber latex of the present invention, the most preferred styrene butadiene ribber latex (SBR) that is customarily used in art paper etc.This synthetic rubber latex preferred ratio with 20～40 weight % in damp course is used.
Water vapor proof barrier packaging paper of the present invention is, mixed the water soluble emulsion composite that polymer covers calcium carbonate microparticle and synthetic rubber latex by on body paper coating, and dry and make.Production process is to use insert coating machine or pneumatic doctor knife coater to carry out, at the back side of body paper with covering weight 15～30g/m
2(being scaled dry weight) and amount of moisture 3.0～4.5 weight % carry out coating.If the not enough 15g/m of coating amount
2, then the covering of body paper is insufficient, produces pin hole and makes damp proof effect insufficient.Also have, if coating amount surpasses 35m
2, then fold folding line easily, thereby reduce moisture resistance, be unfavorable therefore.
Use polymer of the present invention to cover the water vapor proof barrier packaging paper of calcium carbonate, in agitator or paper pulp manufacturing device,, disperse easily as art paper.Its result, water vapor proof barrier packaging paper of the present invention all is separated into fiber and coated substance after carrying out again paper pulpization or mixed processing, and coated substance is destroyed after mixed processing, is dispersed into small coated substance, so play the function of filler in paper machine.Therefore, even recirculation also can obtain the good paper of quality.
The optimum implementation of invention
Below, adopt embodiment that concrete example of the present invention is described.Wherein, in order to measure the quality of the wrapping paper that is suitable for the photograph printing paper, present inventors have adopted following 4 kinds of ortho-tests.
A.WVTR (moisture permeability)
The steam penetration speed is under the described condition of following standard, measures the weight of the steam that sees through flaky substance, and steam penetrating capacity is scaled g/24hr/m
2
The relevant standard of the assay method of the moisture permeability that adopts is as follows:
1. for the Japanese TAPPI test method No.7 of paper pulp and paper
2.TAPPI test method, 1998～1999 years versions, No.T448om-97; T464om-95; T465sp-95
B. pass through the recirculation test of high speed agitator
The test method of recirculation is as follows:
1. paper is cut into 3 * 3cm, adopts the amount of weight 22.5g.
2. the paper of severing is put in the high speed agitator, added 1500ml water.
3. mixed 30 minutes with high speed agitator.
4. the paper that take out to mix, in manual paper machine with 60g/m
2Copy paper.
5. whether observe the paper that produces, detecting has flocculate.
6., then can guarantee recirculation if resulting paper does not have flocculate.
C. anti-viscosity test method
Anti-adhesive test method is as follows:
1. the ph test paper ph severing is become 3.1 * 3.1cm.
2. prepare the photograph printing paper, damp proof cover layer one side of the ph test paper ph of severing is placed on the photograph printing paper.
3. the rubber of 3 * 3cm is placed on the ph test paper ph.The thickness of rubber then can be selected arbitrarily so long as not too thick.
4. preparation baking oven, regulating temperature is 40 ± 1 ℃.
5. photograph printing paper bundle, ph test paper ph and rubber are put into baking oven, add the 5kg weight.
6. in baking oven, place after 48 hours, take away rubber, take out photograph printing paper bundle and ph test paper ph.Detection is the level of adhesion of ph test paper ph when the photograph printing paper is peeled off.
Ph test paper ph when the photograph printing paper is peeled off, if face separates with the complete adhesion of face ground and almost not damage of surface both, then can guarantee good quality.
D. joggling test
The joggling test method is identical with the assay method of the steam penetration speed of test No.1, and different only is before the test ph test paper ph to be flexed into two sections.
Embodiment 1
Use the material of particle diameter below 2 μ m to account for 65% the commercially available calcium carbonate microparticle (TKF-65 that Tjiwi Kimia company makes as calcium carbonate microparticle among this embodiment, trade name), this calcium carbonate microparticle is put into by the allyl acrylate (INTEMEDIATE2003 that CIBA company makes, trade name) in the water-based emulsion solution of the polymer of emulsion and hydroxyethylcellulose (HEC) formation, fully mix the back and separate, dry back forms the polymer overlay film on the calcium carbonate microparticle surface.
This polymer is covered calcium carbonate and be distributed in the water as applying liquid, use good quality paper to be 18g/m during with dry weight as body paper as the styrene butadiene ribber latex (SBR) of adhesive
2Carry out the single face coating, make the moisture resistance wrapping paper after the drying.The content of respectively forming in the damp course all is converted into as follows with solid constituent.Wherein, below the content of expression is all represented weight %.
Calcium carbonate: 54.30%
Allyl acrylate emulsion: 16.00%
Hydroxyethylcellulose (HEC): 0.80%
SBR latex: 28.90%
Amount to: 100%
The result of above-mentioned 4 kinds of tests that gained water vapor proof barrier packaging paper is carried out and the result of other embodiment and comparative example together sum up and are presented in the table 1.Wherein, when the thickness of polyethylene lamination layer was 20 μ m, the WVTR of polyethylene lamination wrapping paper was 20g/24hr/m
2The water vapor proof barrier packaging paper that affirmation obtains in this embodiment 1 does not almost have smell, have almost the moisture resistance with polyethylene lamination wrapping paper same degree, and then in the time of recirculation, anti-adherence excellence, folding resistance is also good.
Embodiment 2
Among this embodiment 2, count 25g/m with dry weight except making coating amount
2In addition, all the other carry out with identical program with embodiment 1.With the result of gained result and other embodiment and comparative example together conclusive table be shown in the table 1.Affirmation does not almost have smell at the water vapor proof barrier packaging paper that this embodiment 2 obtains yet, and have almost the good moisture resistance with polyethylene lamination wrapping paper same degree, and then in the time of recirculation, anti-adherence excellence, folding resistance is also good.
Below, for relatively, the concrete example that is disclosed in above-mentioned recyclable moisture proof packaging paper in first to file (PCT/JP02/05937) specification is illustrated with comparative example 1～3.
Comparative example 1
Use the material of particle diameter below 2 μ m to account for 65% the commercially available calcium carbonate microparticle (TKF-65 that Tjiwi Kimia company makes as calcium carbonate microparticle in this comparative example 1, trade name), this calcium carbonate microparticle is put into the allyl acrylate (INTEMEDIATE2003 that CIBA company makes, trade name) in the water-based emulsion solution of emulsion and ester polymer, separate after fully mixing, dry back forms the polymer overlay film on the calcium carbonate microparticle surface.
This polymer is covered calcium carbonate and be distributed in the water as applying liquid, use good quality paper to be 27g/m during with dry weight as body paper as the styrene butadiene ribber latex (SBR) of adhesive
2Apply at single face, make the moisture resistance wrapping paper after the drying.In the damp course respectively to form content as follows.Wherein, below the content of expression all is expressed as weight %.
Calcium carbonate: 52.30%
Allyl acrylate emulsion: 10.52%
Ester polymer
Acrylic acid: 3.27%
Propylene glycol: 1.72%
Ammonia: 3.36%
SBR latex: 28.83%
Amount to: 100%
The result that gained water vapor proof barrier packaging paper is carried out the result of the test identical with embodiment 1 and embodiment and other comparative examples together conclusive table is shown in the table 1.
Comparative example 2
Each component content in this comparative example 2 in making damp course be following, all the other carry out with identical program with comparative example 1.
Calcium carbonate: 51.95%
Ester polymer
Acrylic acid: 3.56%
Propylene glycol: 1.88%
Ammonia: 3.66%
Allyl acrylate emulsion: 13.00%
SBR latex: 25.95%
Amount to: 100%
The result of gained result and embodiment and other comparative examples together conclusive table is shown in table 1.
Comparative example 3
Each component content in this comparative example 3 in making damp course be following, all the other carry out with identical program with comparative example 1.
Calcium carbonate: 51.95%
Ester polymer
Acrylic acid: 2.53%
Propylene glycol: 1.34%
Ammonia: 2.62%
Allyl acrylate emulsion: 12.99%
SBR latex: 28.57%
Amount to: 100%
The result of gained result and embodiment and other comparative examples together conclusive table is shown in table 1.
Table 1
| ??WVTR (g/24hr/m 2) | Recirculation | Anti-adherence | Warpage WVTR (g/24hr/m 2) | Coating amount (g/m 2) | |
| Embodiment 1 | ????28.0 | ????○ | ????□ | ????29.0 | ????18 |
| Embodiment 2 | ????21.0 | ????○ | ????□ | ????22.0 | ????25 |
| Comparative example 1 | ????23.1 | ????○ | ????□ | ????24.7 | ????27 |
| Comparative example 2 | ????22.9 | ????○ | ????□ | ????24.1 | ????27 |
| Comparative example 3 | ????26.7 | ????○ | ????□ | ????28.7 | ????27 |
Annotate) zero: no flocculate, represent that promptly recirculation is good;
: face and face do not have tack, represent that promptly anti-adherence is good.
Can confirm significantly to learn from the result of table 1, though coating amount is 18g/m less among the embodiment 1
2, but obtained behind the warpage that coating amount is 27g/m in the steam penetration speed and comparative example 3
2The time almost equal water vapor proof barrier packaging paper, and can learn and increase to 25g/m at coating amount
2The time embodiment 2 in, can obtain that the steam penetration speed is 27g/m than coating amount all behind steam penetration speed and the warpage
2Comparative example 1～3 in the article excellence and do not have smell incessantly, and recirculation and anti-adherence also all with the article water vapor proof barrier packaging paper much at one of comparative example 1～3.
As mentioned above, water vapor proof barrier packaging paper of the present invention does not only have smell, so and have a good moisture resistance because the steam penetration speed is little, do not produce flocculate so recirculation excellence during recirculation, damp course can not transferred on the photograph printing paper yet, and have the water proofing property that causes by folding line and worsen also few effect, and when having, but compare the character of the easier excellence of accepting for environment with recirculation polyethylene lamination water vapor proof barrier packaging paper with much at one moisture-proof characteristic of polyethylene lamination water vapor proof barrier packaging paper.
Claims (5)
1. but a recirculation water vapor proof barrier packaging paper is characterized in that, the one side of paper is carried out coating by the damp course that contains following (1)～(3) composition at least.
(1) calcium carbonate microparticle;
(2) cover the film that forms by allyl acrylate emulsion and hydroxyethylcellulose of above-mentioned each calcium carbonate microparticle;
(3) by the synthetic rubber latex that can constitute with other compounds of conjugated diene compound copolymerization.
2. but recirculation water vapor proof barrier packaging paper as claimed in claim 1 is characterized in that, above-mentioned calcium carbonate microparticle with the material of particle diameter below 2 μ m as main component and in above-mentioned damp course the ratio with 45～65 weight % contain.
3. but recirculation water vapor proof barrier packaging paper as claimed in claim 1, it is characterized in that, cover the thin polymer film of above-mentioned each calcium carbonate microparticle, the ratio with allyl acrylate 10～25 weight %, hydroxyethylcellulose 0.2～2 weight % in above-mentioned damp course contains.
4. but recirculation water vapor proof barrier packaging paper as claimed in claim 1 is characterized in that, above-mentioned is styrene butadiene ribber latex by the synthetic rubber latex that can constitute with other compounds of conjugated diene compound copolymerization.
5. but recirculation water vapor proof barrier packaging paper as claimed in claim 1 is characterized in that the coating amount of above-mentioned damp course is 15～30g/cm
2, and its moisture ratio be 3.0～4.5 weight %.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2002/010293 WO2004031480A1 (en) | 2002-10-02 | 2002-10-02 | Recyclable moistureproof packaging paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1685109A true CN1685109A (en) | 2005-10-19 |
| CN100383338C CN100383338C (en) | 2008-04-23 |
Family
ID=32051289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB028297113A Expired - Lifetime CN100383338C (en) | 2002-10-02 | 2002-10-02 | Recyclable moisture proof packaging paper |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3966879B2 (en) |
| CN (1) | CN100383338C (en) |
| AU (1) | AU2002368254A1 (en) |
| WO (1) | WO2004031480A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101248759B (en) * | 2008-03-14 | 2011-05-25 | 上海师范大学 | Artificial enlarge method (of) Rhodobryum giganteum gametophyte |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07238491A (en) * | 1994-02-28 | 1995-09-12 | Nippon Kamiparupu Kenkyusho:Kk | Composite filler for paper |
| SE506674C2 (en) * | 1996-06-05 | 1998-01-26 | Akzo Nobel Surface Chem | Composition, use of a cellulose ether as a thickener and preparation of a coated cellulose-based surface product |
| JP3088423B1 (en) * | 1999-09-07 | 2000-09-18 | 恵和株式会社 | Moisture proof paper |
| JP2001279598A (en) * | 2000-03-28 | 2001-10-10 | Emulsion Technology Co Ltd | Damp proofing coating composition for paper |
-
2002
- 2002-10-02 WO PCT/JP2002/010293 patent/WO2004031480A1/en active Application Filing
- 2002-10-02 CN CNB028297113A patent/CN100383338C/en not_active Expired - Lifetime
- 2002-10-02 AU AU2002368254A patent/AU2002368254A1/en not_active Abandoned
- 2002-10-02 JP JP2004541186A patent/JP3966879B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101248759B (en) * | 2008-03-14 | 2011-05-25 | 上海师范大学 | Artificial enlarge method (of) Rhodobryum giganteum gametophyte |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3966879B2 (en) | 2007-08-29 |
| WO2004031480A1 (en) | 2004-04-15 |
| CN100383338C (en) | 2008-04-23 |
| AU2002368254A8 (en) | 2004-04-23 |
| AU2002368254A1 (en) | 2004-04-23 |
| JPWO2004031480A1 (en) | 2006-02-02 |
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