CN1736311A - Bulky water-disintegratable cleaning article and process of producing water-disintergratable paper - Google Patents
Bulky water-disintegratable cleaning article and process of producing water-disintergratable paper Download PDFInfo
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- CN1736311A CN1736311A CN 200510092667 CN200510092667A CN1736311A CN 1736311 A CN1736311 A CN 1736311A CN 200510092667 CN200510092667 CN 200510092667 CN 200510092667 A CN200510092667 A CN 200510092667A CN 1736311 A CN1736311 A CN 1736311A
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- Paper (AREA)
Abstract
The present invention provides a bulky, water-disintegratable cleaning article, which is formed of water-disintegratable paper impregnated with 100% to 500% by weight of an aqueous agent relative to the dry weight of water integrative paper. The water-disintegratable paper is a substantially water dispersible fibrous sheet containing a water soluble or swellable binder. The water-disintegratable paper has a great number of protrusions and depressions formed by embossing and has a basis weight of 30 to 150 g/m<SUP>2</SUP>. The bulky, water-disintegratable cleaning article has a thickness T<SUB>1 </SUB>of 1.0 to 3.0 mm under a load of 0.3 kPa and a thickness T<SUB>2 </SUB>of at least 0.9 mm under a load of 1.0 kPa.
Description
Technical field
The present invention relates to a kind of bulk water-disintegrable cleaning article.In addition, the invention still further relates to a kind of method that can make bulk hydrolysis paper.
Background technology
The applicant has proposed a kind of water-disintegrable cleaning article (with reference to Japanese patent laid-open 2-149237 communique) before this, it makes hydrolysis paper dipping form as the water-based purification medicament that neccessary composition contains polyvalent metal ion and organic solvent, and described hydrolysis paper is by the wet papermaking manufacturing and contain the water-soluble binder that has carboxyl.A kind of water-disintegrable cleaning article (with reference to Japanese patent laid-open 3-292924 communique) has also been proposed in addition, it forms the boric acid aqueous solution that hydrolysis paper dipping contains water-soluble solvent, and described hydrolysis paper is manufactured paper with pulp by wet method and made and contain polyvinyl alcohol as adhesive.These water-disintegrable cleaning articles have the intensity that can hold out against cleaning work, thereby and have and good water-disintegrablely can be discarded in that water washes away in the lavatory etc.Water-disintegrable in order to make it to have, as the fibre sheet material of the base material of these water-disintegrable cleaning articles, its constitute fiber by non-heat fused and discarded after have a biodegradability cellulose materials such as paper pulp constitute.
For make the hydrolysis paper that comprises described water-disintegrable cleaning article in its discarded back by biodegradation, therefore be difficult to usually copy with mixing as the heat fused fiber that does not have the fiber of biodegradability.In the heat fused fiber, be the fiber that PLA etc. constitutes though also have by material with biodegradability, price height, uneconomical.As having biodegradability and cheap fiber, paper pulp etc. are representative.
Comprise described water-disintegrable cleaning article as making, the method that the paper that is made of the fiber based on paper pulp etc. becomes bulk has the embossing method of pushing between the roller of carving.The embossing method of paper roughly can be divided into carries out the wet type embossing method of embossing and manufactures paper with pulp and paper is carried out the dry type embossing method of embossing after finishing the l Water Paper in the way of manufacturing paper with pulp.Wet type embossing method is to also there not being dry paper to carry out the method (with reference to Japanese patent laid-open 8-260397 communique) of embossing on paper machine.In the Japanese patent laid-open 8-260397 communique, disclose in drying process the l Water Paper that carried out the embossing figuration has been carried out dry method.But in order to make the large quantity of moisture drying that l Water Paper contained when manufacturing paper with pulp usually, l Water Paper is contacted forcefully with the Flying Dutchman (Yankee dryer) or the surface of multi-cartridge drier, thereby the thermal efficiency is become well, in such drying means, can't carry out the figuration of bulk embossing.On the other hand, dry type embossing method is the most common a kind of method, and dried paper carries out embossing to temporarily manufacturing paper with pulp also for it.When the paper based on non-heat fused fibers such as paper pulp is carried out embossing, owing to be under the state that the combination between paper pulp fiber (hydrogen bond, the combination that forms by adhesive etc.) has formed, to carry out embossing, therefore when figuration, in conjunction with the situation of destroyed or fibrous fracture, cause the intensity of paper, the conformality of embossing (maintenance of volume) to descend between meeting generation fiber.In addition, when using as water-disintegrable cleaning article, because before forming goods, when in the back processing behind embossing paper being folded, cutting off or making paper dipping soup or packing, the container of packing into medium, therefore be subjected to various external force, have the problem that to keep the bulkiness behind the embossing just.Especially under the situation of having implemented bulk embossing figuration, the intensity that paper occurs descends, the possibility of impaired and so on the problem of figuration figuration impaired and when being used to clean etc. is very big in the back operation of paper behind embossing.
Summary of the invention
The invention provides a kind of bulk water-disintegrable cleaning article, it floods aqueous medicaments and constitutes in hydrolysis paper, and described hydrolysis paper is made of the fibre sheet material that can carry out aqueous dispersion in fact that contains water-soluble binder or water-swellable adhesive.In hydrolysis paper, be processed to form many concavo-convex by embossing.Hydrolysis paper quantitatively be 30～150g/m
2With respect to the dry weight of hydrolysis paper, be impregnated with the aqueous medicaments of 100～500 weight %.Be impregnated with under the state of aqueous medicaments the thickness T of bulk water-disintegrable cleaning article under the load of 0.3kPa
1Be 1.0mm～3.0mm.Be impregnated with under the state of aqueous medicaments the thickness T of bulk water-disintegrable cleaning article under the load of 1.0kPa
2For 0.9mm or more than.
In addition, the present invention also provides a kind of manufacture method of hydrolysis paper, and it is to containing water-soluble binder or water-swellable adhesive, can carrying out aqueous dispersion and quantitatively be 30～150g/m in fact
2Fibre sheet material, the water content in this fibre sheet material is to implement embossing processing under the state of 10～200 weight %, dry immediately this fibre sheet material after meanwhile dry this fibre sheet material or the embossing processing.
And then the present invention also provides a kind of manufacture method of hydrolysis paper, it is not contain water-soluble binder but contain in the sheet material of the fiber that can carry out aqueous dispersion in fact, add the water-soluble binder aqueous solution, thereby obtaining water-soluble binder content in this sheet material and be 1～30 weight % and water content is the fibre sheet material of 10～200 weight % with respect to the weight of this sheet material of drying regime, the fibre sheet material of this state is implemented embossing processing, dry immediately this fibre sheet material after meanwhile dry this fibre sheet material or the embossing processing.
Description of drawings
Fig. 1 is the stereogram of an embodiment of expression water-disintegrable cleaning article of the present invention.
Fig. 2 is the enlarged drawing of the major part of dandy roll.
Fig. 3 is the schematic representation of apparatus of manufacturing paper with pulp of expression hydrolysis paper.
Fig. 4 is the schematic diagram of expression Embosser.
Fig. 5 is the schematic diagram of the state of the concavo-convex figuration of expression.
The schematic diagram of the state of the concavo-convex figuration when Fig. 6 is the expression drying.
Fig. 7 is the schematic diagram of expression Embosser.
Fig. 8 is the schematic diagram of expression Embosser, hot air apparatus.
Fig. 9 is the schematic diagram of the embossing processing in the expression dry method of paper-making (method (air-laid method) papermaking of gas shop).
The specific embodiment
The present invention relates to a kind of bulk water-disintegrable cleaning article, it also can not cause the intensity of sheet material to descend when carrying out bulk embossing figuration, and under back manufacturing procedure and the situation that is used to clean etc., its figuration is impaired also few, and just conformality is good.In addition, the invention still further relates to a kind of manufacture method of hydrolysis paper, at the problem that embossing had in the texturizing method of paper, the paper figuration of this method manufacturing is impaired less, good shape retention and can prevent that intensity from descending.
Below based on embodiment preferred, with reference to accompanying drawing just the present invention describe.With the bulk prerequisite that turns to, described bulking is processed and is improved thickness by the fibre sheet material that contains water-soluble binder or water-swellable adhesive, can carry out aqueous dispersion in fact being carried out embossing among the present invention.Fibre sheet material is implemented embossing processing and the hydrolysis paper that obtains quantitatively is 30～150g/m under drying regime
2, be preferably 50～120g/m
2Make hydrolysis paper dipping 100～500 weight % aqueous medicaments, be preferably the aqueous medicaments of dipping 100～300 weight % and obtain bulk water-disintegrable cleaning article of the present invention.Thickness T that water-disintegrable cleaning article measures under the load of 0.3kPa that this is bulk
1Be 1.0～3.0mm, this becomes first benchmark of the bulking among the present invention.
Fig. 1 is the stereogram of expression as the water-disintegrable cleaning article 1 of an embodiment of the present invention.The bulk water-disintegrable cleaning article 1 of the present embodiment has the 1st 1a and the 2nd 1b, and has the protuberance 2,2 of many face side direction the opposing party's from a side the side-prominent formation of face ...Protuberance 2 becomes row with certain arranged spaced on all directions of the length direction X of bulk water-disintegrable cleaning article 1 and width Y, form staggered cancellate configuration pattern.At protuberance 2,2 ... between be formed with recess 3,3 separately ..., the same cancellate configuration pattern that interlocks that forms.The whole three-dimensional shape that forms of bulk thus water-disintegrable cleaning article.
Bulk water-disintegrable cleaning article 1 is characterised in that its bulkiness.The thickness T of bulk water-disintegrable cleaning article 1
1, i.e. the distance on the summit of the protuberance 2 among 2 1b in summit to the of the protuberance 2 from the 1st 1a, flooding under aforementioned aqueous medicaments and the load effect at 0.3kPa, be 1.0～3.0mm as mentioned above, be preferably 1.2～2.5mm, more preferably 1.3～2.0mm.By thickness setting in this scope, water-disintegrable cleaning article 1 becomes bulk, can show the thickness sense such as rag, simultaneously can keep good intensity.Specifically, when thickness is lower than 1.0mm, then can not feel conscientiously that with respect to cleaning sheet in the past the thickness sense has significant increase, and wiping gets up not smoothly, and penetrate at dirt and also allow the user feel worried on this point of running out from the back side.On the other hand, when thickness surpassed 3.0mm, then the fastness of cleaning article 1 can suffer damage, and perhaps accommodating container becomes big, is uneconomic as disposable article.The thickness T of water-disintegrable cleaning article 1
1Under the load of 0.3kPa, measure as mentioned above.This load is very little, and the thickness that records with this load and the apparent thickness of water-disintegrable cleaning article 1 are approximate.
Bulk water-disintegrable cleaning article 1 also must have the thickness retentivity except being bulk, and promptly when when cleaning in hand held, even if press this cleaning article 1 with hand, this cleaning article 1 still can be kept its thickness.Among the present invention the power of pressing with hand is assumed to 1.0kPa.Be impregnated with under the state of aforementioned aqueous medicaments the thickness T that bulk water-disintegrable cleaning article records under the load of 1.0kPa
2For 0.9mm or more than, just can realize aforesaid retentivity.Wiping easiness when clearing away and prevent that the angle that dirt penetrates from considering T from exerting oneself wiping with hand
2Be preferably 0.9mm or more than, more preferably 1.0mm or more than, be preferably especially 1.2mm or more than.T
2Higher limit can not surpass T
1
About bulk water-disintegrable cleaning article 1, consider aforesaid T from keeping this angle of bulk embossing shape
1And T
2Ratio T
2/ T
1(following with this ratio be called thickness than) be 0.8 or more than, be preferably 0.85 or more than.When the thickness ratio is lower than 0.8, then can not obtain the retentivity of needed bulk embossing shape, make figuration impaired with hand easily once pressing, can not get such elastic sensation of like cloth and relieved sense.The thickness ratio be preferably 0.85 or more than.Higher limit to the thickness ratio does not have special qualification, means that near 1 retentivity (maintenance of volume) is good more more.
In addition, the pickup of aqueous medicaments and cooperation composition can not given T
2And T
1Value cause big influence, thereby at T of the present invention
2And T
1Condition determination in, do not comprise the pickup of aqueous medicaments.Work as T
2And T
1When comprising the pickup of aqueous medicaments in the condition determination, then with the typical pickup among the present invention, promptly be advisable with 2 times of the dry weight of hydrolysis paper.
Fibre sheet material contains fiber and the water-soluble binder or the water-swellable adhesive that can carry out aqueous dispersion in fact.In order to obtain to keep bulkiness and under the impregnation state of aqueous medicaments, to show the bulk water-disintegrable cleaning article and the hydrolysis paper of good moistening intensity, must have aforesaid sheet structure.Water-soluble binder or water-swellable adhesive help bulk water-disintegrable cleaning article and hydrolysis paper to show moistening intensity under the impregnation state of aqueous medicaments, keep the retentivity of bulk embossing shape and are discarded in water-disintegrable when water washes away in the lavatory.
As the fiber that can carry out aqueous dispersion in fact that contains in the fibre sheet material, operable fibre length is preferably 15mm or following, more preferably 10mm or following, more preferably 5mm or following.Considering from the angle that has both water-disintegrable and moistening intensity, preferably is that the paper pulp fiber of 0.5mm～3.0mm uses as main body with weight average fiber length.And, consider from the angle that improves feel, can also mix the equal fibre length of levelling and be rayon fiber or synthetic fibers about 4.0～7.0mm.As the kind of fiber, preferably have the fiber of biodegradability, can list cellulosic fibre as typical example.As cellulosic fibre, for example can list semisynthetic fibres such as natural fibers such as paper pulp, cotton and artificial silk etc.These fibers can use a kind of, or are used in combination two kinds or more kinds of.Also can use the fiber that changes beating degree and be able to fibrillating.As paper pulp, the wood pulp that can use coniferous tree bleached kraft pulp (NBKP), bleached hardwood kraft pulp (LBKP) etc. to be bleached can use the paper pulp that comes from fiber crops etc. in addition, implement chemical treatment and produce the mercerization slurry of alkali swelling, the chemical crosslinking paper pulp with helical structure, micro fiber shape cellulose.In addition, can also use synthetic fibers such as olefine fibre such as polyethylene with biodegradability or polypropylene or polyesters, the synthetic fibers that are made of PLA have biodegradability, thereby desirable more.Except that adhesive, preferably contain the cellulosic fibre of 70～100 weight % in the fibre sheet material, especially preferably contain the cellulosic fibre of 80～100 weight %.
As water-soluble binder, can list natural polysaecharides, polysaccharide derivates, synthetic high polymer etc.As natural polysaecharides, can list mosanom, bassora gum, melon glue, xanthans, acacia gum, antler glue, galactomannans, gelatin, casein, albumin, amylopectin etc.As polysaccharide derivates, can list carboxymethyl cellulose, carboxyethyl cellulose, carboxymethylated starch or its salt, starch, methylcellulose, ethyl cellulose etc.As synthetic high polymer, can list salt, the unsaturated carboxylic acid of the polymer of polyvinyl alcohol, polyvinyl alcohol derivative, unsaturated carboxylic acid or copolymer and the salt of the copolymer that can form etc. with the monomer of this unsaturated carboxylic acid copolymerization.As unsaturated carboxylic acid, can list acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic anhydride, maleic acid, fumaric acid etc.The addition of these water-soluble binders can be set at suitable value according to the kind of purposes and adhesive, but, from keep bulkiness, obtain suitable moistening intensity, the angle that obtains good water-disintegrable and economy considers, generally be weight with respect to fibre sheet material, preferred 1～30 weight % that adds especially preferably adds 2～15 weight %.In addition, be impregnated with at hydrolysis paper under the state of the aqueous medicaments that contains the high concentration water, above-mentioned adhesive preferably can be used as and temporarily do not dissolve and keep that the bond of combination plays a role between fiber, plays the effect of the intensity when keeping bulkiness and cleaning.Consider that from irritating angle of the detergency of urine blotchy stain, adversary's skin the water content in the aqueous medicaments is 30～95 weight %, is preferably 50～95 weight %, more preferably 60～95 weight %.
The temporary transient insoluble of aforesaid water-soluble binder is to assign to realize by the insoluble one-tenth of adhesive that contains in soup pickup, hydrolysis paper or the aqueous medicaments in the control hydrolysis paper.The pickup of the aqueous medicaments in the hydrolysis paper is according to the difference of the content in kind, molecular weight and the hydrolysis paper of adhesive and therefore difference can not limit, but preferably makes hydrolysis paper flood the undissolvable therein aqueous medicaments of most of adhesive.In addition, as the insoluble composition of adhesive, can list water-miscible organic solvent or specific acid or electrolyte etc.
As water-miscible organic solvent, specifically can list monohydric alcohols such as ethanol, methyl alcohol, isopropyl alcohol, ethylene glycol, diglycol, polyethylene glycol, propane diols, dipropylene glycol, butanediol, hexylene glycol, 3-methyl isophthalic acid, di-alcohols such as 3-butanediol, ether or diether that lower alcohols such as above-mentioned di-alcohols and methyl alcohol, ethanol, propyl alcohol, butanols form, the ester that aforementioned di-alcohols and lower fatty acid form, polyalcohols such as glycerine or D-sorbite.Water-miscible organic solvent in the aqueous medicaments can use separately or use two or more, and its concentration is preferably 30～70 weight %, more preferably 30～60 weight %, more preferably 30～50 weight %.In addition, when also with acid described later or electrolyte, the concentration of water-miscible organic solvent is preferably 1～50 weight %, more preferably 5～40 weight %, the more preferably scope of 10～30 weight %.
As acid or electrolyte, representational can listing can be by saltouing or the crosslinked temporary transient thawless material of water-soluble binder that makes.As the salt that is used to saltout,, can use various salt so long as water miscible salt does not then have particular determination.On the other hand, as being used for crosslinked salt, according to the difference of the kind of adhesive, selected material is also different.For example can list the water soluble salt that potassium ion can be provided in aqueous medicaments, this potassium ion can and antler glue or melon glue crosslinked and make adhesive gelization.In addition, can also list the water soluble salt that bivalent metal ion can be provided in soup, this bivalent metal ion in the presence of a spot of water-soluble solvent, can and the carboxylic acids adhesive crosslinked and make it to become insoluble.On the other hand, can also list can and polyvinyl alcohol crosslinked and make it the borates such as boric acid, sodium tetraborate of gelation.In addition, above-mentioned acid or the electrolyte concentration in aqueous medicaments is different and different according to the kind of adhesive and content in hydrolysis paper, therefore can not limit entirely, if but cleannes and the residual on the skin of hand after the consideration wiping, above-mentioned acid or the electrolyte concentration in aqueous medicaments is preferably 1～10 weight %, more preferably 1～5 weight %.
Aqueous medicaments is medium and the insoluble composition that is added with aforesaid adhesive with water.In aqueous medicaments, except that mentioned component, can also add surfactant, bactericide, chelating agent, bleaching agent, deodorant, spices etc. as required, thereby improve the cleaning performance of this aqueous medicaments.As surfactant, anion surfactant, non-ionic surface active agent, cationic surfactant and amphoteric surfactant can use, particularly consider, preferably use polyoxyalkylene (oxyalkylene addition molal quantity is 1～20) alkyl (carbon number is 8～22 straight or branched) ether from the angle that has both detergency and cleannes, alkyl (carbon number is 8～22 straight or branched) glucosides (average sugared condensation degree is 1～5), D-sorbite aliphatic acid (carbon number is 8～22 straight or branched) ester, and non-ionic surface active agent and alkyl carboxyl betaine such as alkyl (carbon number is 6～22 straight or branched) glycerin ether, the alkyl sulfobetaines, the alkyl hydroxy sulfobetaines, the alkylamide carboxybetaine, the alkylamide sulfobetaines, alkyl carbon atoms numbers such as alkylamide hydroxyl sulfo betaine are 8～24 amphoteric surfactant.
Consider that from the angle that obtains sufficient wiping effect with respect to the weight (is benchmark with the dry weight) of hydrolysis paper, the amount of the aqueous medicaments of being flooded is 100～500 weight %, is preferably 100～300 weight %.
On the other hand, as the water-swellable adhesive, can list the fibrous polyvinyl alcohol or derivatives thereof that has the cellulose family or the starch based derivative of carboxyl or have hydroxyl.Specifically, can list fibrous polyvinyl alcohol or fibrous carboxymethyl cellulose, fibrous carboxyethyl cellulose etc.When using above-mentioned water-swellable adhesive, generally be and carry out papermaking after raw fibre such as paper pulp fiber mixes.Consider from the moistening intensity that keeps bulkiness, acquisition appropriateness, the angle that obtains good water-disintegrable and economy, the content of water-swellable adhesive in fibre sheet material is preferably 5～40 weight %, more preferably 8～30 weight %, the more preferably scope of 10～25 weight %.In addition, use the situation of water-swellable adhesive and use the situation of above-mentioned water-soluble binder same, be impregnated with at hydrolysis paper under the state of the aqueous medicaments that contains the high concentration water, the swelling of preferred this adhesive temporarily is suppressed and the bond of combination plays a role between fiber as keeping, and plays the effect of the intensity when keeping bulkiness and cleaning.When for example using fibrous polyvinyl alcohol, be suitable for using boric acid class salt such as boric acid, sodium tetraborate, and when using fibrous carboxymethyl cellulose, fibrous carboxyethyl cellulose, be suitable for using the water soluble salt of bivalent metal ions such as can generating magnesium ion, calcium ion, zinc ion.
The kind of relevant water-soluble or water-swellable adhesive and match make temporary transient insoluble or the inhibitor that swelling is suppressed of adhesive, aforesaid various combination is arranged, wherein optimization acid's class water-soluble binder and bivalent metal ion, contain the combination of the aqueous medicaments of water-miscible organic solvent.
In the carboxylic acids water-soluble binder, particularly preferably be the alkali metal salt of carboxymethyl cellulose (below be also referred to as CMC).From the angle consideration that has good performance as adhesive and have good compatibility with the aftermentioned crosslinking agent, the degree of etherification falling of CMC is preferably 0.8～1.2, is preferably 0.85～1.1 especially.When adopting gunite etc. toward paper in during interpolation CMC, consider from the angle of its operability, the 1 weight % viscosity in aqueous solution of CMC under 25 ℃ is preferably 10～40mPas, be preferably 15～35mPas especially, 5 weight % viscosity in aqueous solution under the uniform temp are preferably 2500～4000mPas, be preferably 2700～3800mPas especially, and 5 weight % viscosity in aqueous solution under 60 ℃ are preferably 1200mPas or following.
For the hydrolysis paper that contains the carboxylic acids water-soluble binder, as the aqueous medicaments that is immersed in wherein, from make adhesive temporarily insoluble, obtain sufficient moistening intensity and obtain good water-disintegrable angle to consider, it is preferably formed: moisture concentration is 60～90 weight %, the concentration of water-miscible organic solvent is 8～35 weight %, and contain 1～5 weight % concentration among alkaline-earth metal, manganese, zinc, cobalt and the nickel such as being selected from calcium, magnesium, strontium and barium a kind, the water-soluble divalent metal salt of metal ion of two or more can be provided.As aforesaid water-soluble divalent metal salt, for example can use hydroxide, chloride, sulfate, nitrate, carbonate, formates, acetate etc.The preferred especially water-soluble divalent metal salt that uses is calcium chloride and zinc sulfate.
The angle of the solid degree during from cleaning is considered, be impregnated with aqueous medicaments hydrolysis paper, be bulk water-disintegrable article 1 preferred moistening intensity, the traffic direction of paper machine (vertically: Machine Direction, abbreviate MD as) go up for 300cN/25mm or more than, the direction vertical (laterally: Cross machine Direction, abbreviate CD as) with MD go up for 100cN/25mm or more than.On the MD direction, moistening intensity more preferably 400cN/25mm or more than, more preferably 500cN/25mm or more than.On the CD direction, moistening intensity more preferably 150cN/25mm or more than, more preferably 200cN/25mm or more than.
Return Fig. 1, protuberance 2 roughly is the shape of hemisphere.Recess 3 too.Preferably when cleaning, its two sides has same performance for bulk water-disintegrable cleaning article 1 of the present embodiment and hydrolysis paper.From this point of view, the shape of the protuberance 2 among preferred the 1st 1a and at interval with the 2nd 1b in the shape of protuberance and roughly the same at interval.In addition, the recess 3 that exists among the protuberance 2 that exists among preferred the 1st 1 a and the 2nd 1b is in positive and negative relation of plane, and the protuberance 2 that exists among the recess 3 that exists among same preferred the 1st 1a and the 2nd 1b is in positive and negative relation of plane.The shape of further preferred protuberance 2 is identical and reverse each other with the shape of recess 3.
Pattern of indentations is not limited.So long as becoming bulk, the paper after the embossing processing gets final product.The concavo-convex embossing handling ease of particularly concavo-convex two steel riders becomes bulk.In the concavo-convex embossing processing of these concavo-convex two steel riders, the roller surface is provided with the concavo-convex of even rule, and between 2 rollers, the protuberance of a roller and the recess of another roller are meshed.This concavo-convex pattern is the repeat patterns of protuberance and recess, and the spacing of protuberance and recess is preferably 3.5～14.0mm, more preferably 5.0～10.0mm.In addition, consider that from the angle that makes water-disintegrable cleaning article 1 and hydrolysis paper become bulk poor (groove depth) on protuberance summit and recess summit is preferably 1mm～5mm, more preferably 1.5～4.5mm, more preferably 2mm～4mm (with reference to Fig. 2).
In a face of water-disintegrable cleaning article 1 and hydrolysis paper, in the foursquare zone of 10cm * 10cm, preferably in any position of this face, 50～850 protuberances 2 of average formation are preferably formed 100～600 protuberances 2 especially in this zone.Be set in the above-mentioned scope by the number with protuberance 2, protuberance 2 and recess 3 can balancedly dispose mutually, thereby make water-disintegrable cleaning article 1 of the present embodiment and hydrolysis paper have better removing property of spot.
The preferred manufacture method of hydrolysis paper is described as described later, and protuberance 2 in the hydrolysis paper and recess 3 can freely design their shape and configuration according to the depiction of dandy roll.
Below just describe as the preferred manufacture method of hydrolysis paper of the base material of bulk water-disintegrable cleaning article 1 of the present invention.The preparation method of hydrolysis paper is: to containing water-soluble binder or water-swellable adhesive, can carrying out aqueous dispersion and quantitatively be 30～150g/m in fact
2Fibre sheet material, the water content in this fibre sheet material is to implement embossing processing, dry immediately this fibre sheet material after meanwhile dry this fibre sheet material or the embossing processing under the state of 10～200 weight % with respect to the weight of this fibre sheet material of drying regime.Perhaps, do not containing adhesive but containing in the sheet material of the fiber that can carry out aqueous dispersion in fact, add the water-soluble binder aqueous solution with respect to this sheet material, the water-soluble binder content that obtains in this sheet material is that 1～30 weight %, while this sheet material weight water content with respect to drying regime are the fibre sheet material of 10～200 weight %, when the fibre sheet material of this state is implemented embossing processing, by this this fibre sheet material of embossing dry processing.
The fibre sheet material that contains the aqueous dispersion carried out of water-soluble binder can utilize the whole bag of tricks manufacturing.For example known has: add water-soluble binder and the fixative that water-soluble binder is fixed in as the paper pulp dispersion liquid of paper making raw material, make the raw material paper (Japanese patent laid-open 3-193996 communique) of the hydrolysis paper of the water-soluble binder that contains scheduled volume.In addition, carry out sheet material by the paper pulp dispersion liquid and be shaped, after pressurizing and dehydrating or partial desiccation, water-soluble binder is carried out spray-drying or coating drying, so also can make the raw material paper of the hydrolysis paper of the water-soluble binder that contains scheduled volume.At this moment, compare, use hot blast more can obtain the raw material paper of low-density and water-disintegrable better hydrolysis paper by predrying modes such as drying machines with the drying mode of pressurizing and dehydrating.And, also can not adopt above-mentioned wet papermaking method, do not make the dry method of water that paper pulp fiber is discongested and adopt, form the net sheet after, spraying or coating water-soluble binder, dry then, thereby produce fibre sheet material.So-called gas shop method that Here it is.
Fig. 3 is illustrated in the schematic diagram of an example of the preferred manufacturing installation that uses in the manufacturing of fibre sheet material of the aqueous dispersion carried out that contains water-soluble binder.Manufacturing installation shown in Figure 3 (wet method manufacture paper with pulp machine) has forming machine, wet end, the 1st drying section, spraying portion and the 2nd drying section.Forming machine is to supply with wet end after the pulping of being supplied with by the modulating device (not shown) is adjusted to predetermined concentration.Not shown modulating device has the adding set that raw materials such as paper pulp fiber is carried out adding in the device of crushing and beating and the raw material after crushing and beating additives such as sizing agent, pigment, paper power reinforcing agent, bleaching agent, agglutinant, and its paper stock that raw material constituted that constitutes with the corresponding predetermined concentration of characteristic of hydrolysis paper is modulated into pulping.In addition, also can mixed adhesive in pulp.Wet end is the pulping that will be supplied with by forming machine is configured as l Water Paper on the forming net of paper machine a part.The 1st drying section is the part that makes the l Water Paper drying that forms at wet end.Spraying portion is the part of spraying to through the paper of the 1st drying section drying.The 2nd drying section is that the paper that becomes moisture state through spraying portion spray adhesive is carried out dry part.
Manufactured paper with pulp at wet end by the pulping that forming machine 4 is supplied with, on wet end 5, formed l Water Paper.The l Water Paper utilization is arranged on the attraction that the suction box 6 on the wet end produces and removes wherein moisture, thereby forms predetermined moisture content.Then, l Water Paper is imported the 1st drying section 7 and carry out drying.The 1st drying section 7 is made of sweep gas dryer cylinder (hereinafter referred to as TAD).TAD comprises that its circumferential surface has the swing roller 8 of aeration and covers this swing roller 8 and make it roughly to be in the cover 9 of airtight conditions.In TAD, the air that is heated to predetermined temperature is supplied in the cover 9.The air of heating is from the lateral internal circulation of swing roller 8.As shown in Figure 3, l Water Paper transports with the state on the circumferential surface that is wound on swing roller 8, and wherein swing roller 8 is rotated along the direction of arrow.During transporting in TAD, the thickness direction of heating air penetration l Water Paper makes l Water Paper dry and become paper thus.
In spraying portion, the paper that obtains at the 1st drying section 7 is sprayed the aqueous solution that contains adhesive.Spraying portion is positioned between the 1st and the 2nd drying section 7,14.Two drying sections 7,14 couple together by conveyer belt.
Conveyer belt has respectively towards the upper conveyor belt 10 and the lower conveyor belt 11 of direction of arrow rotation.The structure of conveyer belt 10 is: the folder through the TAD drying of the 1st drying section 7 is held between above-mentioned two conveyer belts 10,11, described paper is transported to the 2nd drying section 14 under this state.Reflexing end at the downstream side of upper conveyor belt 10 disposes vacuum furnace 12.Vacuum furnace 12 inhales paper at the back side of upper conveyor belt 10, and transports paper by upper conveyor belt 10 under this adsorbed state.
As shown in Figure 3, spraying portion has spray nozzle 13.Spray nozzle 13 is provided in the below of the 2nd drying section 14 and mutually opposed with vacuum furnace 12.Spray nozzle 13 sprays the spray liquid that contains adhesive towards vacuum furnace 12, thereby this spray liquid is added (adding) to paper.
Spraying portion injected behind the adhesive, paper is transported to the 2nd drying section 14.The 2nd drying section 14 is made of Flying Dutchman.Become the paper of moisture state through the spray liquid sprinkling, be transported with the state on the circumferential surface that is wound on the swing roller 15 that is arranged at the Flying Dutchman in the cover 16.During transporting being reeled by swing roller 15, the drying of paper is also carried out.
The exit of Flying Dutchman is provided with wing 17.Wing 17 makes paper wrinkling on one side, on one side the swing roller 15 of paper from Flying Dutchman stripped down.Allow paper tape that gauffer is arranged thus.Then paper temporarily is wound on (not shown) on the up-coiler and becomes paper web.
On the other hand, the fibre sheet material that contains the aqueous dispersion carried out of the water-swellable adhesive manufacturing that also can in all sorts of ways.For example known has: the fibre adhesive that adds the water-swellable of scheduled volume in the paper pulp dispersion liquid, it is configured as l Water Paper, just obtains fibre sheet material (Japanese patent laid-open 4-370300 communique, Japanese patent laid-open 2-74694 communique) after the drying.In addition, also can not adopt the wet papermaking method, discongest, carry out drying behind the formation net sheet, thereby produce fibre sheet material and adopt gas shop method to make the composite fibre raw material of the fibre adhesive of paper pulp fiber and water-swellable carry out the dry method fiber.
Moreover, by making up above-mentioned method, also can make the fibre sheet material that contains water-soluble binder and water-swellable adhesive (following above-mentioned various fibre sheet materials are called raw material paper).
Raw material paper is added water once more with the form keeping back of paper web in ensuing operation or temporarily, when carrying out concavo-convex figuration, carry out drying by bulk embossing, perhaps carry out drying behind the figuration immediately, thereby form bulk hydrolysis paper with many jogs.Above-mentioned method for making for example can be undertaken by the dry hot pressing line device that can carry out in bulk concavo-convex figuration shown in Figure 4.Embosser shown in Figure 4 has a pair of dandy roll 18,18.Have at the circumferential surface of each dandy roll 18 many concavo-convex, these concavo-convex shapes that are engagement mutually.Each dandy roll 18 direction shown in the arrow in Fig. 4 is rotated.Each dandy roll 18 is metal, and is equipped with and can be heated to predetermined temperature heater (not shown).Consider from the angle of heating, dandy roll preferable alloy system, but as the material of dandy roll, except the metal system, one of them roller can also use rubber, roller made of paper.Upstream side at dandy roll 18,18 is provided with spray nozzle 19, from spray nozzle 19 to raw material paper spray water.In addition, the method for interpolation water is not limited to use spray nozzle.For example can also use coating machine or intaglio plate transfer printing etc.In addition, can also replace water with steam.
As shown in Figure 4, raw material paper is spread water and is formed moisture state by spray nozzle 19 from the uncoiling of paper web (not shown), is sent to Embosser afterwards.In Embosser, raw material paper is carried out embossing by cramping and processes between a pair of dandy roll 18,18.As previously mentioned because each dandy roll 18 structurally intermeshes, therefore processed on by the raw material paper of two rollers, 18 crampings with roller 18 on the corresponding concaveconvex shape of concaveconvex shape.That is to say, raw material paper has been carried out the concavo-convex embossing processing of two steel riders.Moreover, remove the water that contains in the raw material paper by dandy roll 18 dryings of heating, just produce combination between new fiber.Can obtain needed solid and bulk hydrolysis paper thus with many concaveconvex shapes.
Fig. 5 is the schematic diagram that has carried out the concavo-convex embossing processing of two steel riders back raw material paper.Raw material paper under this state is in moisture state because of having sprayed water.That is to say that it is weakened to constitute interfibrous hydrogen bond.Based on such reason, the formation fiber 20 of raw material paper is subjected to the effect of external force, promptly is in the state that can be configured again along the relief pattern of the concavo-convex embossing of two steel riders.Therefore, when raw material paper passed through between the dandy roll 18,18, the relief pattern that the fiber correspondence dandy roll 18 was configured again, thereby raw material paper is endowed concaveconvex shape.Meanwhile, by means of the heating of being undertaken by dandy roll 18 water drying from the moistening raw material paper is removed.Its result, in the fibrous structure that reconfigures, the interfibrous combination again of having constructed interfibrous hydrogen bond again and having produced by adhesive.In the bulk hydrolysis paper that obtains like this, particularly the sidewall (the perhaps sidewall of recess 3) at protuberance 2 is not easy to break.So, just can obtain the good shape retention and the few hydrolysis paper of intensity decline of concaveconvex shape.Moreover, in front the dipping of being mentioned contain in the water-disintegrable cleaning article 1 of aqueous medicaments of special component, by making adhesive temporary transient insoluble or suppress its swelling, just can make cleaning article keep between its fiber in conjunction with and keep concaveconvex shape, and become the also good cleaning article of moistening intensity.
If adopt and this manufacture method diverse ways, do not carry out moistening and when directly carrying out concavo-convex figuration to the paper that is in general drying regime with dandy roll 18,18, owing to be under the state of keeping the interfibrous hydrogen bond of formation, to apply big deformation force in vertical direction, therefore as shown in Figure 6, interfibrous combination is destroyed or fiber itself is cut off, thereby the sidewall (the perhaps sidewall of recess) of protuberance is broken.Its result, although temporarily formed jog in the paper that obtains, it is just damaged easily that in a single day this jog is subjected to the effect of external force.In addition, compare before the hydrolysis paper that obtains and the concavo-convex figuration, its intensity will decline to a great extent.
Consider from the angle that makes raw material paper carry out concavo-convex figuration smoothly, raw material paper is before being fed between the dandy roll 18,18, the amount of the water that sprays on the paper must be set at 10～200 weight % with respect to the dry weight of raw material paper, be preferably 10～130 weight %, be preferably 10～50 weight % especially, especially be preferably 10～40 weight %.Generally itself contain the moisture about 5～10 weight % in the raw material paper, comprise this moisture, when if the moisture content in the raw material paper is lower than 10 weight %, then the swelling of the reduction of hydrogen bond or adhesive or dissolving can not be carried out fully between fiber, thereby can not make fiber take place to reconfigure fully along relief pattern.In addition, if when the moisture content in the raw material paper surpasses 200 weight %, then be used for dry load and increase, thereby make the economy variation.On the other hand, from making the dry fully angle of raw material paper consider that the heating-up temperature of dandy roll 18,18 is preferably 120～250 ℃.In addition, the degree of the drying of raw material paper depends on the travelling speed of raw material paper sometimes, if travelling speed increases, then only according to the heat of dandy roll dried feed paper fully.So, as shown in Figure 7, prolong the time of contact of sheet material by the diameter that strengthens hot dandy roll, thereby make drying become easy, perhaps as shown in Figure 8, the cover 23 that covers dandy roll 18,18 is set, supplies with the air 21 that is heated to predetermined temperature by the part of cover 23, and then the air of this heating is discharged as exhaust 22 from the part of cover, can improve the drying capacity of embossing system by so a kind of structure.In addition, not only can carry out drying, and can be after embossing processing, use, under the state that keeps concaveconvex shape, carry out drying such as other drying machine such as sweep gas dryer cylinder or warm-up mill in the embossing process segment.For the sheet material that adopts dandy roll 18,18 to carry out concavo-convex figuration is peeled off easily, preferably add remover simultaneously with water.As remover, can list solution that has added higher fatty acids, Tissuemat E, silicone oil, mineral oil, other surfactant etc.
On the other hand, as other method, utilize l Water Paper paper process or gas shop manufactured not contain water-soluble binder but contain the sheet material that can carry out the fiber of aqueous dispersion in fact, in this operation, wait the interpolation water-soluble binder aqueous solution by spraying, make it become the sheet material that contains water-soluble binder, simultaneously, also make it to be in the moisture state that contains predetermined moisture, then the fibre sheet material of this state is implemented embossing processing, meanwhile or dry immediately after the embossing processing, also can access hydrolysis paper thus with desired rerum natura.In the dry method of paper-making method in Fig. 9, with the short fiber of forming machine 24 pair dryings open fibre on one side, short fiber is attracted to forms the net sheet on the vacuum transport belt 25 on one side, with spray nozzle 13 spray water soluble adhesives, use Embosser 18 to carry out embossing processing.Use sweep gas dryer cylinder 7 dryings then.In addition, the symbol among Fig. 9 is represented identical member with the identical part of symbol among Fig. 3.In addition, the method that Fig. 9 is represented does not have the place that specifies, can be suitable for the explanation relevant with foregoing manufacture method.
In addition, make the sheet material of the fiber that does not contain water-soluble binder after, with Embosser shown in Figure 4, add the aqueous solution be dissolved with water-soluble binder by spraying, also can access hydrolysis paper with same characteristic.At this moment, consider that from the angle of keeping bulkiness, the moistening intensity that obtains appropriateness and economy the amount of the water-soluble binder that contains in the sheet material of fiber is preferably 1～30 weight %, is preferably 2～15 weight % especially.In addition, the amount of the water that adds simultaneously with water-soluble binder is preferably 10～200 weight % with respect to the dry weight of raw material paper, is preferably 10～130 weight % especially, especially is preferably 10～50 weight %, more preferably 10～40 weight %.
In this manufacture method, just through the thickness (Td) of the hydrolysis paper that has been in drying regime after the embossing processing with the thickness (Tw) of the hydrolysis paper when having flooded aqueous medicaments is preferred following a relation.Wherein Td measures under the load of 0.3kPa, and Tw measures under the load of 2.2kPa.In the manufacturing of general water-disintegrable cleaning article, also to fold after the embossing processing, cut, back operations such as dipping, aggregation.Institute's externally applied forces is assumed to the load of about 2.2kPa in the operation of above-mentioned back, and therefore the condition determination with Tw is set under the load of 2.2kPa.The ratio Tw/Td of Tw and Td is a yardstick of weighing conformality (maintenance of volume), and this ratio means that near 1 conformality is good more more.According to manufacture method of the present invention, this ratio preferably reach 0.7 or more than, more preferably reach 0.75 or more than, further preferably reach 0.8 or more than.If this ratio is lower than 0.7, then conformality is lower, can not embody the difference with in the past texturizing method.
Pickup in aqueous medicaments is in the scope of 100～500 weight %, and the value of Tw does not have tangible difference, based on this reason, in the condition determination of Tw of the present invention, does not comprise that the pickup of aqueous medicaments is measured.If comprise the pickup of water liquid medicine in the condition determination of Tw, then 2 times of dry weight that with the typical pickup among the present invention, promptly are set at hydrolysis paper are advisable.
As mentioned above, in this manufacture method, by under predetermined water content, implementing embossing processing and dry simultaneously, can reduce to make the paper generation of this phenomenon of breaking, and can be under the situation that intensity is descended the many bulk jogs of formation.In addition,, can improve the height of jog fully, and the retentivity of the jog that forms is good by suitably selecting dandy roll.
Hydrolysis can not take place in dipping aqueous medicaments formed water-disintegrable cleaning article 1 in the hydrolysis paper when the dipping aqueous medicaments, and when discarding in a large amount of water, and is will promptly defeated and dispersed one-tenth fibrous.The hydrolysis degree of water-disintegrable cleaning article is measured with the complexity of the defeated and dispersed decomposition of regulation among the JIS P 4501-1993 (toilet paper), and this value is low more then water-disintegrable good more.As the roughly standard of the complexity of defeated and dispersed decomposition, be preferably 100 seconds or below, more preferably 60 seconds or below.
The formed water-disintegrable cleaning article 1 of dipping aqueous medicaments in the hydrolysis paper, for example: aspect clean article,, be used for man-hour and rub one's body with a towel applicable to clearing up a messy situation to settle an impasse, nursing, remove ornaments and formal dress and use sheet material applicable to the cleaning in water places such as lavatory, washroom, kitchen.Cleaning article after the use can directly be poured in the water discarded, and these article 1 are hydrolysis rapidly in pouring water into, thereby can not stop up drainpipe.
The present invention is not limited to above-mentioned embodiment.For example hydrolysis paper is not limited to single layer structure, also can constitute sandwich construction by many.If when adopting sandwich construction, preferably wherein in the paper on a side top layer, contain water-soluble binder or water-swellable adhesive at least.
Illustrate in greater detail with regard to the present invention with embodiment below.But scope of the present invention is not limited by such embodiment.Short of particularly pointing out, then " % " and " part " represents " weight % " and " weight portion " respectively.
Use the wet papermaking machine of Fig. 3, the paper stock of the coniferous tree bleached kraft pulp (NBKP) to 100% carries out papermaking, thereby obtains l Water Paper.Employing makes l Water Paper be dried to moisture content as the sweep gas dryer cylinder of the 1st drying machine to reach 4 weight %.The folder that obtains is held between a pair of plastic conveyer belt 10,11 transports, spray CMC (degree of etherification falling 0.9, Nippon Paper company make) adhesive liquid by nozzle 13, this adhesive liquid is that concentration is that solution and 60 ℃ of following viscosity of 5% are 1000mPs.Spray amount is set at 130% with respect to the weight of paper.The addition of CMC is 6.5% with respect to the weight of paper.Employing makes the paper drying of having added CMC as the Flying Dutchman 14 of the 2nd drying machine, utilizes wing 17 to carry out wrinkling processing then.Produce thus and quantitatively be 30g/m
2CMC add paper.In addition, use the wet papermaking machine of Fig. 3 equally, producing quantitatively is 30g/m
2CMC do not add paper.These 2 kinds of paper are added paper/CMC according to CMC do not add order that paper/CMC adds paper and carry out stackedly in another operation, produce and quantitatively be 90g/m
2The fibre sheet material (raw material paper) of 3-tier architecture.
With the fibre sheet material uncoiling of 3-tier architecture, use spray nozzle 19 spray water shown in Figure 4.Sprayed the water content heat drying formula moisture meter (A﹠amp of the fibre sheet material of water; The MX-50 that D company produces) measures.With respect to the weight of the fibre sheet material of drying, the spray amount of water is as shown in table 1.The fibre sheet material that has sprayed water is imported between a pair of dandy roll 18,18 shown in Figure 4.On the circumferential surface of each dandy roll, have many concavo-convex and these concavo-convex shapes that are engagement mutually.The spacing of pattern of indentations is 7.0mm, and groove depth is 2.0mm.Each dandy roll 18 is heated to the temperature shown in the table 1.Fibre sheet material is subjected to cramping and carries out concavo-convex figuration between a pair of dandy roll 18,18.In addition, the heat of the water that fibre sheet material contained by dandy roll 18 is dried and removes.So just obtained bulk hydrolysis paper.Sheet thickness behind the embossing is set to 2mm (under the load of drying regime and 0.3kPa).At this moment, the process velocity of embossing machine is 30m/min.
To the hydrolysis paper that is in drying regime behind the embossing the thickness under the 0.3kPa load (Td), flooded 2 times to the hydrolysis paper behind the aqueous medicaments A of dry weight under 2.2kPa load thickness (Tw) and the moistening intensity of hydrolysis paper measure.In addition, with the commodity processing machine by our company under the condition identical of the hydrolysis paper behind the embossing, fold with ordinary production, processing such as the dipping of cutting, aqueous medicaments A, packing.Measure the processing back at thickness under the 0.3kPa load (T1) and the thickness (T2) under 1.0kPa load.
Comparative example 1
Making has CMC and adds the quantitative 90g/m of being that paper/CMC does not add paper/CMC interpolation paper 3-tier architecture
2The operation of fibre sheet material identical with embodiment 1～8.When with other operation this fibre sheet material being carried out embossing, spray water and fibre sheet material is passed through between the not heated dandy roll 18,18 has not been carried out embossing processing with this.Make the operation of fibre sheet material dipping aqueous medicaments A identical, obtained water-disintegrable cleaning article with this with embodiment 1～8.
Use the wet papermaking machine, with 90 parts: 10 parts ratio is mixed and is copied coniferous tree bleached kraft pulp (NBKP) and fibrous PVA (Kuraray corporate system KuralonKII), uses the Flying Dutchman drying, just produces quantitatively to be 33g/m
2Fibre sheet material.In other operation, make this sheet material become 2 layers of structure, thereby obtain fibre sheet material (raw material paper).Similarly obtain water-disintegrable cleaning article with embodiment 1～8 then.Wherein, as aqueous medicaments, use aqueous medicaments B with following prescription.
Comparative example 2
When with other operation fibre sheet material being carried out embossing, spray water and fibre sheet material is passed through between the not heated dandy roll 18,18 has not been carried out embossing processing with this.In addition and embodiment 9 and 10 similarly obtain water-disintegrable cleaning article.
Aqueous medicaments A (adhesive is CMC)
APG 0.2%
The 3-methyl isophthalic acid, 3-butanediol 5%
Water surplus
Aqueous medicaments B (adhesive is PVA)
APG 0.2%
The 3-methyl isophthalic acid, 3-butanediol 5%
Water surplus
[performance evaluation]
Measure the thickness T d (under the load of 0.3kPa) of the hydrolysis paper that obtains in each embodiment and each comparative example respectively and flooded the thickness T w (under the load of 2.2kPa) of the hydrolysis paper of aqueous medicaments, calculate ratio Tw/Td according to these values.Measured the thickness T of the water-disintegrable cleaning article after the back processing respectively
1(under the load of 0.3kPa), T
2(under the load of 1.0kPa) calculates thickness according to these values and compares T
2/ T
1In addition, the moistening intensity (fracture strength) of water-disintegrable cleaning article and water-disintegrable according to following method mensuration.Their result is as shown in table 1.
[moistening intensity (fracture strength)]
The assay method of the fracture strength of MD direction is: the size according to 25mm on 100mm, the CD direction on the MD direction cuts sample, with the MD direction is that draw direction is fixed on the cupping machine (ORIENTEC corporate system TenshironRTA～100), and spacing jig is from being 50mm.With the draw speed tensile sample of 300mm/min, the intensity during with fracture is set at fracture strength.The assay method of the fracture strength of CD direction is: the size according to 25mm on 100mm, the MD direction on the CD direction cuts sample, is that draw direction is fixed on the cupping machine with the CD direction, and spacing jig is from being 50mm.Use the method identical to measure then with the fracture strength of MD direction.
[water-disintegrable]
Water-disintegrable cleaning article is cut into square make that the weight of paper (not property of water-bearing medicament) is 0.3g, to be used as water-disintegrable mensuration sample.Other complexity test (JIS P4501) according to the defeated and dispersed decomposition of toilet paper is measured.
Table 1
Adhesive-CMC (carboxymethyl cellulose)
| The processing of hot pressing line | Hydrolysis paper is (g/m quantitatively 2) | Aqueous medicaments A content (%) | Hydrolysis paper thickness (mm) | Tw/ Td | Hydrolysis paper dry tenacity (cN/25mm) | The moistening intensity of hydrolysis paper (cN/25mm) | Water-disintegrable cleaning article commodity processing back thickness (mm) | T2/ T1 | Moistening intensity (cN/25mm) after the water-disintegrable cleaning article commodity processing | Water-disintegrable (second) after the commodity processing | ||||||||
| Temperature (℃) | Moisture content (wt%) (raw material paper weight relatively) | (Td) 0.3kPa when dry | (Tw) 2.2kPa when moistening | MD | CD | MD | CD | (T1) 0.3kPa when moistening | (T2) 1kPa when moistening | MD | CD | |||||||
| Embodiment | 1 | 200 | 10 | 93.4 | 200 | 2.02 | 1.50 | 0.74 | 3913 | 779 | 607 | 146 | 1.31 | 1.14 | 0.87 | 605 | 144 | 37 |
| 2 | 200 | 15 | 92.1 | 200 | 1.98 | 1.51 | 0.76 | 4543 | 901 | 741 | 151 | 1.33 | 1.18 | 0.89 | 730 | 150 | 38 | |
| 3 | 200 | 20 | 91.5 | 200 | 1.95 | 1.54 | 0.79 | 4898 | 1099 | 743 | 163 | 1.35 | 1.21 | 0.90 | 735 | 159 | 39 | |
| 4 | 200 | 30 | 91.4 | 200 | 1.98 | 1.60 | 0.81 | 4901 | 1195 | 752 | 181 | 1.38 | 1.23 | 0.89 | 749 | 179 | 39 | |
| 5 | 200 | 40 | 92.6 | 200 | 2.01 | 1.64 | 0.82 | 4931 | 1341 | 760 | 202 | 1.41 | 1.28 | 0.91 | 758 | 200 | 34 | |
| 6 | 200 | 70 | 90.9 | 200 | 1.99 | 1.66 | 0.83 | 4970 | 1492 | 773 | 234 | 1.42 | 1.30 | 0.92 | 769 | 233 | 35 | |
| 7 | 200 | 30 | 91.4 | 300 | 1.98 | 1.55 | 0.78 | 4901 | 1195 | 758 | 205 | 1.36 | 1.22 | 0.90 | 752 | 201 | 38 | |
| 8 | 200 | 30 | 91.4 | 500 | 1.98 | 1.52 | 0.77 | 4901 | 1195 | 703 | 152 | 1.25 | 1.12 | 0.90 | 698 | 150 | 40 | |
| Comparative example | 1 | Room temperature | 7 | 92.1 | 200 | 2.02 | 1.23 | 0.61 | 2656 | 663 | 531 | 124 | 0.92 | 0.70 | 0.76 | 524 | 122 | 34 |
Adhesive-PVA fiber
| The processing of hot pressing line | Hydrolysis paper is (g/m quantitatively 2) | Aqueous medicaments B content (%) | Hydrolysis paper thickness (mm) | Tw/ Td | Hydrolysis paper dry tenacity (cN/25mm) | The moistening intensity of hydrolysis paper (cN/25mm) | Water-disintegrable cleaning article commodity processing back thickness (mm) | T2/ T1 | Moistening intensity (cN/25mm) after the water-disintegrable cleaning article commodity processing | Water-disintegrable (second) after the commodity processing | ||||||||
| Temperature (℃) | Moisture content (wt%) (raw material paper weight relatively) | (Td) 0.3kPa when dry | (Tw) 2.2kPa when moistening | MD | CD | MD | CD | (T1) 0.3kPa when moistening | (T2) 1kPa when moistening | MD | CD | |||||||
| Embodiment | 9 | 200 | 10 | 71.5 | 200 | 1.80 | 1.38 | 0.77 | 4080 | 751 | 1390 | 350 | 1.31 | 1.13 | 0.88 | 1379 | 345 | 90 |
| 10 | 200 | 30 | 72.9 | 200 | 1.78 | 1.45 | 0.81 | 4265 | 858 | 1510 | 410 | 1.37 | 1.24 | 0.91 | 1497 | 402 | 82 | |
| Comparative example | 2 | | 7 | 72.8 | 200 | 1.88 | 0.99 | 0.53 | 4010 | 701 | 1306 | 261 | 0.91 | 0.72 | 0.79 | 1293 | 259 | 78 |
Know clearly that from the result shown in the table 1 the bulk water-disintegrable cleaning article of each embodiment still surpasses 0.9mm with the thickness of commodity processing machines processing back under the load of 1.0kPa, and compare T with thickness under the load of 0.3kPa
2/ T
1Bigger, the retentivity of bulk embossing shape is good, and intensity also can maintain on the higher level.On the other hand, the bulk water-disintegrable cleaning article of comparative example is after processing with the commodity processing machine, and thickness declines to a great extent, and intensity is also lower.In addition, can judge from the result of each embodiment: thus when carrying out embossing under the high state of the many moisture content of spray amount of water, (thickness after the commodity processing compares T to the retentivity of embossing shape
2/ T
1) and the increase of moistening intensity.In addition, though do not show in the table, when using the bulk water-disintegrable cleaning article wiping lavatory of each embodiment, compare thickness with each comparative example and moistening intensity is all higher, wiping makes things convenient for and wiping is felt good.In addition, scrub effect is good, can remove dirt easily.In addition, during in inboard, wiping closet edge etc., because thickness is arranged, so hand can be away from dirt, thereby the sense of feeling at ease is arranged.Owing in cleaning, also can keep thickness, thereby can carry out the cleaning of wideer area.Can conclude that from above content the bulk water-disintegrable cleaning article of each embodiment is compared with each comparative example, and is more convenient to use.
Have again, from above-mentioned situation as can be known, the ratio T of the hydrolysis paper of each embodiment
w/ T
dBe 0.7 or more than, have conformality for load.In addition, the dry tenacity of the hydrolysis paper of each embodiment and moistening intensity are all than comparative example height.
As mentioned above, bulk water-disintegrable cleaning article of the present invention has the thickness sense, and is even also have good conformality for compression or such physical loads that stretches under moisture state, solid and do not allow to break.In addition, even in the such back manufacturing procedure of cutting, folding, detergent-impregnated, aggregation, packing, the retentivity that also has good bulk embossing shape.
And manufacturing method according to the invention can make the hydrolysis paper that obtains become bulk.In addition, even allow the hydrolysis paper dipping aqueous medicaments that obtains and become moisture state, it also has good conformality for physics load such as load, and is solid and be difficult for breaking.
Claims (12)
1, a kind of bulk water-disintegrable cleaning article, it is made up of the fibre sheet material that can carry out aqueous dispersion in fact that contains water-soluble binder or water-swellable adhesive, and be processed to form by embossing many concavo-convex quantitatively be 30～150g/m
2Hydrolysis paper in, be impregnated with aqueous medicaments 100～500 weight % with respect to the dry weight of this hydrolysis paper, wherein be impregnated with under the state of described aqueous medicaments the thickness T of described bulk water-disintegrable cleaning article under the load of 0.3kPa
1Be 1.0mm～3.0mm, the thickness T under the load of 1.0kPa
2For 0.9mm or more than.
2, bulk water-disintegrable cleaning article as claimed in claim 1 is being impregnated with under the state of aqueous medicaments, the thickness T of described bulk water-disintegrable cleaning article under the load of 0.3kPa
1With the thickness T under the load of 1.0kPa
2Thickness compare T
2/ T
1Be 0.8 or more than.
3, bulk water-disintegrable cleaning article as claimed in claim 1 or 2, wherein the content of water-soluble binder is 1～30 weight % of described fibre sheet material, perhaps the content of water-swellable adhesive is 5～40 weight % of described fibre sheet material.
4, as each described bulk water-disintegrable cleaning article of claim 1-3, wherein be impregnated with under the state of aqueous medicaments, described water-soluble binder is temporarily insoluble, and the swelling of described water-swellable adhesive temporarily is suppressed, and plays a part to keep the bond of combination between fiber.
5, a kind of manufacture method of hydrolysis paper, its be to contain water-soluble binder or water-swellable adhesive that can carry out aqueous dispersion in fact quantitatively is 30～150g/m
2Fibre sheet material, the water content in this fibre sheet material is to implement embossing processing under the state of 10～200 weight %, dry immediately this fibre sheet material after meanwhile dry this fibre sheet material or the embossing processing.
6, the manufacture method of hydrolysis paper as claimed in claim 5 wherein behind the described fibre sheet material of drying, makes this fibre sheet material dipping aqueous medicaments.
7, as the manufacture method of claim 5 or 6 described hydrolysis paper, wherein said embossing processing uses a pair of dandy roll with the jog that is the shape of intermeshing to carry out.
8, as the manufacture method of each described hydrolysis paper of claim 5-7, wherein make hydrolysis paper contain the water-soluble binder of 1～30 weight %, perhaps contain the water-swellable adhesive of 5～40 weight % with respect to described fibre sheet material with respect to described fibre sheet material.
9, as the manufacture method of each described hydrolysis paper of claim 5-8, wherein said water-soluble binder is the water-soluble binder that has carboxyl, and described water-swellable adhesive is the fibrous polyvinyl alcohol or derivatives thereof that has the cellulose family or the starch based derivative of carboxyl or have hydroxyl.
10, as the manufacture method of each described hydrolysis paper of claim 6-9, wherein said aqueous medicaments is to make water-soluble binder insoluble, perhaps can suppress the medicament of water-swellable adhesive swelling.
11, a kind of manufacture method of hydrolysis paper, it is not contain water-soluble binder but contain in the sheet material of the fiber that can carry out aqueous dispersion in fact, add the water-soluble binder aqueous solution, the water-soluble binder content that obtains in this sheet material is that 1～30 weight %, the water content of while with respect to the weight of this sheet material of drying regime are the fibre sheet material of 10～200 weight %, the fibre sheet material of this state is implemented embossing processing, dry immediately this fibre sheet material after meanwhile dry this fibre sheet material or the embossing processing.
12, a kind of purposes of bulk water-disintegrable article as cleaning implement, wherein said bulk water-disintegrable article are made up of the fibre sheet material that can carry out aqueous dispersion in fact that contains water-soluble binder or water-swellable adhesive, and be processed to form by embossing many concavo-convex quantitatively be 30～150g/m
2Hydrolysis paper in, be impregnated with aqueous medicaments 100～500 weight % with respect to the dry weight of this hydrolysis paper, wherein be impregnated with under the state of described aqueous medicaments the thickness T of described bulk water-disintegrable cleaning article under the load of 0.3kPa
1Be 1.0mm～3.0mm, the thickness T under the load of 1.0kPa
2For 0.9mm or more than.
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|---|---|---|---|
| JP241481/2004 | 2004-08-20 | ||
| JP2004241481 | 2004-08-20 | ||
| JP342961/2004 | 2004-11-26 | ||
| JP342876/2004 | 2004-11-26 |
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| CN100560011C CN100560011C (en) | 2009-11-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510802A (en) * | 2009-08-03 | 2012-06-20 | 乔治亚太平洋法国公司 | Fibrous sheet disintegrating in water, process for manufacturing said fibrous sheet, use of said fibrous sheet for the manufacture of a core |
| CN105054852A (en) * | 2015-08-31 | 2015-11-18 | 江苏康隆工贸有限公司 | Dissoluble cleaning tissue wholly made of wood pulp |
| CN106003843A (en) * | 2012-05-02 | 2016-10-12 | 山田菊夫 | Method for producing water-disintegrable paper |
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