in the aqueous adhesive for ballpoint pen type bonding utensil of the present invention , the water - dispersion type polyurethane resin emulsion being the primary ingredient may be a material in which polyurethane resin is dispersed in water to be dissolved or to form emulsion , wherein one type of polyurethane resin or a combination of two or more types may be used . examples of such water - dispersion type polyurethane resin emulsion include a one - liquid type polyurethane dispersion and a one - liquid type self - crosslinkable aqueous polyurethane dispersion formed by dispersing aqueous urethane resin or self - crosslinkable aqueous urethane resin in water . for the one - liquid type polyurethane dispersion , for example , there are such aqueous urethane resin as are formed by dispersing urethane elastomer in water , wherein anionic or nonionic one is obtained depending on the type of a hydrophilic group introduced . specific examples include takelack w - 6061 ( anionic ), takelack w - 6020 ( anionic ), takelack w - 615 ( anionic ) and takelack w - 511 ( anionic ) ( all of these are manufactured by mitsui takeda chemicals ). the one - liquid type self - crosslinkable aqueous polyurethane resin dispersion is one formed by dispersing self - crosslinkable aqueous urethane resin in water . specific examples include takelack ws - 6021 ( anionic ), takelack ws - 5000 ( anionic ), takelack ws - 5100 ( anionic ) and takelack ws - 4000 ( anionic ) ( all of these are manufactured by mitsui takeda chemicals ). among these polyurethane resin dispersions , an emulsion in which a polyurethane resin having at least one silanol group in a molecule ( hereinafter , it may be referred to as silanol group - containing polyurethane resin ) is dispersed as fine particles is excellent in adhesiveness and preferred . the silanol group in a silanol group - containing polyurethane resin is generated by the hydrolysis of a hydrolysable silicon group of a compound used for the reaction in an aqueous phase , the compound containing at least one active hydrogen group capable of reacting with an isocyanate group and hydrolysable silicon group . the silanol group is introduced to the silanol group - containing polyurethane resin via an urethane bond . the bond is formed by reacting a compound having at least two hydroxyl groups per one molecule ( polyol ingredient ), a compound having at least two isocyanate groups per one molecule ( isocyanate ingredient ), and a compound having at least one active hydrogen group capable of reacting with an isocyanate group and hydrolysable silicon group per one molecule ( hydrolysable silicon group - containing compound ). more preferably , it is obtained according to a method described in jp - a - 9 - 12864 , paragraphs from [ 0031 ] to [ 0064 ]. a silanol group - containing polyurethane resin to which such hydrophilic group as a carboxyl group or a sulfonate group has been introduced is preferred from the viewpoint of the stability of the resin in an aqueous phase . examples of the compound having at least two hydroxyl groups per one molecule include polyester polyol , polyether polyol , polyether ester polyol , polyester amide polyol , acrylic polyol , polycarbonate polyol , polyhydroxy alkane , ricinus oil , polyurethane polyol and mixtures thereof . among the polyols , polyether - based polyol and polyester - based polyol are preferred from the viewpoint of having no sticky feeling . for the compound having at least two isocyanate groups per one molecule , any of aliphatic , alicyclic , aromatic and araliphatic series may be used . or , mixtures thereof may also be used . examples of aliphatic diisocyanate include trimethylene diisocyanate , tetramethylene diisocyanate , hexamethylene diisocyanate , pentamethylene diisocyanate , 1 , 2 - propylene diisocyanate , 1 , 2 - butylene diisocyanate , 2 , 3 - butylene diisocyanate , 1 , 3 - butylene diisocyanate , 2 , 4 , 4 - or 2 , 2 , 4 - trimethylhexamethylene diisocyanate , 2 , 6 - diisocyanate methylcaproate and mixtures thereof . examples of alicyclic diisocyanate include 1 , 3 - cyclopentane diisocyanate , 1 , 4 - cyclohexane diisocyanate , 1 , 3 - cyclohexane diisocyanate , 3 - isocyanatemethyl - 3 , 5 , 5 - trimethylcyclohexyl isocyanate ( isoholon diisocyanate ), 4 , 4 ′- methylene bis ( cyclohexyl isocyanate ), methyl - 2 , 4 - cyclohexane diisocyanate , methyl - 2 , 6 - cyclohexane diisocyanate , 1 , 4 - or 1 , 3 - bis ( isocyanatemethyl ) cyclohexane and mixtures thereof ( hydrogenated xylylene diisocyanate ), and mixtures thereof . examples of aromatic diisocyanate include m - phenylene diisocyanate , p - phenylene diisocyanate , 4 , 4 ′- diphenyl diisocyanate , 1 , 5 - naphthalene diisocyanate , 4 , 4 ′- diphenylmethane diisocyanate , 2 , 4 - or 2 , 6 - tolylene diisocyanate and mixtures thereof , 4 , 4 ′- toluidine diisocyanate , dianisidine diisocyanate , 4 , 4 ′- diphenylether diisocyanate and mixtures thereof . examples of araliphatic diisocyanate include 1 , 3 - or 1 , 4 - xylylene diisocyanate and a mixture thereof , ω , ω ′- diisocyanate - 1 , 4 - diethylbenzene , 1 , 3 - or 1 , 4 - bis ( 1 - isocyanate - 1 - methylethyl ) benzene and mixtures thereof . examples of triisocyanate include triphenylmethane - 4 , 4 ′, 4 ″- triisocyanate , 1 , 3 , 5 - triisocyanate benzene , 2 , 4 , 6 - triisocyanate toluene , and 1 , 3 , 5 - triisocyanate hexane . examples of polyisocyanate monomer include 4 , 4 ′- diphenyldimethylmethane - 2 , 2 ′- 5 , 5 ′- tetraisocyanate . and , dimmer and trimer derived from the polyisocyanate monomer can be mentioned . among these isocyanate ingredients , alicyclic diisocyanate is preferred from the viewpoint of being not sticky and excellent in smooth feel to touch , and among the alicyclic diisocyanate most preferred is hydrogenated xylylene diisocyanate . the aforementioned polyurethane dispersion may contain strongly basic tertiary amine . the amine acts as a catalyst for forming a siloxane bond when the silanol group - containing polyurethane resin is formed into a film , therefore the closslinking is accelerated at temperatures around room temperature to form a coated film excellent in water resistance and solvent resistance , thereby giving an aqueous adhesive that is not sticky and excellent in smooth feel to touch . the strongly basic tertiary amine is not particularly limited , but from the viewpoint of accelerating the crosslinking at temperatures within room temperature range , one having pka of 11 or more is preferred . examples of the strongly basic tertiary amine include 1 , 8 - diazabicyclo [ 5 . 4 . 0 ] undecene - 7 ( dbu ), and 1 , 6 - diazabicyclo [ 3 . 4 . 0 ] nonen - 5 . the content of the strongly basic tertiary amine is , relative to 100 parts by mass ( hereinafter , abbreviated to “ part ”) of silanol group - containing polyurethane resin ( solid content ), preferably from 0 . 001 to 10 parts , more preferably from 0 . 001 to 7 parts , further preferably from 0 . 001 to 5 parts . when the strongly basic tertiary amine is incorporated in such content , the curing speed is good and the solvent resistance and water resistance of a formed coated film tends to be good . examples of the self - emulsified urethane resin thus obtained , that is , aqueous urethane resin ( composition ) containing silanol group - containing polyurethane resin that are available as commercial products include “ takelack ws - series ” ( by mitsui takeda chemicals ) that contain a silanol group in a side chain and are anionic . in the invention , when preparing the aqueous adhesive for ballpoint pen type bonding utensil , it is possible to blend one type or a combination of two or more types selected from water - dispersion type polyurethane resin emulsions , preferably silanol group - containing water - dispersion type polyurethane resin emulsions . when a silanol group - containing polyurethane resin and strongly basic tertiary amine are commercially available as an aqueous solution or an aqueous emulsion that contains the two , the aqueous adhesive of the invention can be prepared by using it as the primary ingredient and blending other ingredients according to need . the content of the water - dispersion type polyurethane resin emulsion is from 75 to 95 % by mass as the emulsion relative to the total amount of the adhesive , preferably from 80 to 95 % by mass . when it is incorporated in such amount , the adhesive has sufficient adhesion performance , not too high viscosity , is discharged smoothly , and can be coated to fine regions properly . in the aqueous adhesive of the invention , for the purpose of preventing the drying of the adhesive and improving the storage stability , preferably a humectant is blended . examples of the humectant include polyhydric alcohols such as ethylene glycol , diethylene glycol , triethylene glycol , propylene glycol , dipropylene glycol , tripropylene glycol , butylene glycol , hexylene glycol , glycerin , diglycerin and tetralin ; ethers such as ethylene glycol monomethyl ether , ethylene glycol monoethyl ether , ethylene glycol monobutyl ether , diethylene glycol monomethyl ether , diethylene glycol monoethyl ether , diethylene glycol monobutyl ether , propylene glycol monomethyl ether , propylene glycol monoethyl ether , dipropylene glycol monomethyl ether , dipropylene glycol monoethyl ether , diethylene glycol monomethyl ether acetate , diethylene glycol monoethyl ether acetate , diethylene glycol monopropyl ether acetate , diethylene glycol monobutyl ether acetate , ethylene glycol monophenyl ether and propylene glycol monophenyl ether ; alcohols such as hexanol ; and aqueous high boiling point solvents such as polyethylene glycol , n - methyl - 2 - pyrrolidone and 2 - pyrrolidone . these humectants may be used independently or while combining two or more of these . among the aforementioned compounds , from the viewpoint of excellent moisturizing action , preferred are polyhydric alcohols such as ethylene glycol , propylene glycol , butylene glycol , hexylene glycol and glycerin ; alcohols such as hexanol ; aqueous high boiling point solvents such as polyethylene glycol and n - methyl - 2 - pyrrolidone , and in particular glycerin is preferred . the content of a humectant in the adhesive is preferably from 5 to 25 % by mass relative to the total amount of the adhesive , more preferably from 5 to 20 % by mass . the humectant incorporated in such amount gives an aqueous adhesive that shows a little loss in quantity of volatile portions with the lapse of time , has good storage stability , and shows no degradation of adhesion performance . the viscosity of the aqueous adhesive of the invention is preferably in the range of from 8 to 135 mpa · s ( 25 ° c .). for measuring the viscosity a so called cone - and - plate viscosimeter having a cone rotor type 1 ° 34 ′× r24 which is available from toki sangyo co ., ltd ./ japan , type tve - 22l was used ; the measuring range was “ m ” and the measuring temperature was 25 ° c . by controlling the viscosity in this range , the adhesive is given reasonable fluidity , and is discharged smoothly with a little dripping to make it possible to apply the adhesive in an appropriate amount properly to fine portions . to the aqueous adhesive of the invention , additionally according to need , such additives as dye , a surfactant , an antiseptic agent , a mildewproof agent , a ph adjusting agent or a defoaming agent can be added arbitrarily to such an extent that does not inhibit the effect of the invention . the preparation of the aqueous adhesive of the invention can be carried out easily by mixing with a publicly known mixer such as a propeller type stirrer or a homogenizer . the aqueous adhesive for ballpoint pen type bonding utensil of the invention can be loaded into the all types of ballpoint pen type bonding utensils , including bonding utensils with a spring , needless to say , and also bonding utensils without a spring because the adhesive shows no dripping as compared with conventional adhesives . for the ballpoint pen into which the aqueous adhesive is to be loaded , ones of conventional types with a ball having a diameter of from 0 . 7 to 1 . 2 mm can be used . the amount to be discharged when the adhesive is loaded is preferably determined to be in the range of from 100 to 360 mg / 5 m by the selection of the adhesive or controlling the blending amount . this range of the amount allows the adhesive to be discharged smoothly with a little dripping and to be coated properly to fine portions . here , the discharged amount is a value obtained by the measurement with a scanning device . hereinafter , the present invention is described more specifically while citing examples , but the invention is not limited to these examples . in the following examples , “% by mass ” and “ part by mass ” are abbreviated to “%” and “ part ” respectively , if no particular reference is made . following ingredients were stirred and mixed to give an aqueous adhesive for ballpoint pen type bonding utensil . glycerin 10 . 0 parts mildew - proof agent 0 . 2 part one - liquid type self - crosslinkable 89 . 8 parts aqueous polyurethane resin ( by mitsui takeda chemicals , trade name : takelack ws - 5000 , isoholon diisocyanate / polyester - based , solid content : 30 %) an aqueous adhesive for ballpoint pen type bonding utensil was obtained by stirring and mixing respective ingredients in the same way as in example 1 except for using a one - liquid type self - crosslinkable aqueous polyurethane resin ( by mitsui takeda chemicals , trade name : “ takelack ws - 6021 ”, hydrogenated xylylene diisocyanate / polyether - based , solid content : 30 %). an aqueous adhesive for ballpoint pen type bonding utensil was obtained by stirring and mixing respective ingredients in the same way as in example 1 except for using a one - liquid type self - crosslinkable aqueous polyurethane resin ( by mitsui takeda chemicals , trade name : “ takelack ws - 5100 ”, isoholon diisocyanate / polycarbonate - based , solid content : 30 %). an aqueous adhesive for ballpoint pen type bonding utensil was obtained by stirring and mixing respective ingredients in the same way as in example 1 except for using a one - liquid type self - crosslinkable aqueous polyurethane resin ( by mitsui takeda chemicals , trade name : “ takelack ws - 4000 ”, hydrogenated xylylene diisocyanate / polycarbonate - based , solid content : 30 %). a commercially available product manufactured by a company ( acrylic emulsion - based ) was used . a commercially available product manufactured by b company ( acrylic emulsion - based ) was used . a commercially available product manufactured by c company ( acrylic emulsion - based ) was used . a commercially available product manufactured by d company ( acrylic emulsion - based ) was used . each of the aqueous adhesives for ballpoint pen type bonding utensil thus obtained was loaded into a pen body of j - ball ( ball diameter : 1 . 0 mm , discharge amount : 250 mg / 5 m ; manufactured by tombow ), which was subjected to the following adhesion tests . in an environmental condition of 23 ° c ., 60 % rh , wood - free paper , copying paper ( whiteness : 70 %), japanese paper ( figured paper ), cardboard ( construction paper ), corrugated board respectively were bonded with each other , and , further , a button and metal parts ( slide clip and thread - accepting round washer ) were stuck to wood - free paper respectively , which were removed after 30 seconds to observe whether or not the paper were ruptured . the results were evaluated according to the following standard , which are shown in table 1 . as it becomes clear from the results shown in table 1 , when the adhesive of the invention is loaded , excellent adhesiveness is exerted between paper and other substance , needless to say , as well as between papers , and there is no rapture of paper when the adhered paper is removed , therefore lamination can be easily repeated even when the previous lamination was unsuccessful . the ballpoint pen type bonding utensil loaded with the aqueous adhesive for ballpoint pen type bonding utensil of the invention can be widely utilized for paperwork in offices , shops for handicraft or hobby and factories , and for paper craft works in homes and culture centers . the above description of preferred embodiments has been given by way of example . from the disclosure given , those skilled in the art will not only understand the present invention and the attendant advantages , but will also find apparent various changes and modifications to the structures disclosed . it is sought , therefore , to cover all such changes and modifications as fall within the spirit and scope of the invention , as defined by the appended claims , and equivalents thereof .