A kind of cigarette environment-friendly type meets at a high speed the preparation method of mouth glue
Technical field
The present invention relates to a kind of environment-friendly type and connect mouth glue and preparation method thereof at a high speed, be specifically related to the preparation method that a kind of cigarette environment-friendly type connects at a high speed mouth glue, belong to cigarette and stick with glue agent field.
Background technology
Cigarette sticks with glue agent and is mainly divided into and connects mouth glue, overlapping glue, packaging glue and mouth rod four kinds, shaping glue, and China is about You170Yu Jia cigar mill, and produce per year, cigarette output occupies first place in the world 3600 about ten thousand case, needs the cigarette glue consumed can reach 30,000 tons every year in cigarette process.Wherein, connect mouth glue portion maximum, about 20,000 tons.In recent years, in order to enhance productivity, the speed of a motor vehicle of cigarette machine from 4000-5000 before prop up/minute brought up to 8000-15000 to prop up/minute, correspondingly, cigarette tackiness agent just must can meet the requirement of high speed cigarette, as having certain tack, rate of drying is fast, and cohesive force is strong.
The viscosity connecing mouth glue is 2800-3300mPas, and at present, the mouth glue that connects for high-speed cigarette machine mainly contains two classes: a class is VAE (ethene-vinyl acetate) latex or polyvinyl acetate (PVA) (PVAc) latex; Another kind of is that vinyl acetate between to for plastic and acrylate copolymer emulsion connect mouth glue, and by both copolymerization, reach the object reducing multipolymer second-order transition temperature, namely obtain internally plasticized effect, this is a kind of way improving acetate emulsion initial cohesiveness.
The high-viscosity latex mentioned as patent application CN200510031185 is the tackiness agent based on vinyl acetate, connect the mouth cigarette speed of a motor vehicle for high-speed cigarette machine and be greater than 8000/minute, have that tack is good, bonding strength is high, bonding level and smooth, feature that shelf-stable is good.Mobility, tack is good, winter resistance is good the High-speed Cigarette Adhesives for Filter Tipping can be obtained by the method for vinyl acetate between to for plastic and acrylic ester copolymerization.Vinegar-the third copolymerization the High-speed Cigarette Adhesives for Filter Tipping stick mentioned in " FHX-2 high speed cigarette tackiness agent " as Chen Yuanwu is the ternary copolymer emulsion of vinyl acetate between to for plastic and butyl acrylate, unsaturated carboxylic acid, this emulsion adopts common seed to drip polymerization process continuously, add a small amount of molecular weight regulator, make molecular weight of copolymer little, copolymer emulsion has good viscosity stability and mobility, and have the advantages that initial bonding strength is large, rate of drying is fast, bonding strength is high, the requirement meeting the mouth speed of a motor vehicle 7000 ~ 8000/min can be met.The water-based ultrahigh-speed tip adhesive for cigarettes that patent application CN201110068785 mentions, with vinyl-acetic ester, butyl acrylate, vinylformic acid termonomer, under the effect of ammonium persulfate-sodium bisulfite composite initiator, aggregate into ternary copolymer emulsion, then by evacuation process and interpolation lemon tri-n-butyl softening agent, reduce vinyl acetate content, and the viscosity of water use regulation tackiness agent, solids content technical indicator, it is obtained that to connect mouth glue cementability strong, machine speed can reach 12000-17000 and prop up/min, vinyl acetate content is lower than 1000mg/kg, the total ester class of phthalic acid is lower than 500mg/kg, formaldehyde content is lower than 50mg/kg.
All to use protective colloid PVA and softening agent in the method for making of upper adapter glue, oh group in PVA easily absorbs water, for increasing the water tolerance connecing mouth glue, hydroxyl must be closed, modal method adopts PVA acetals to realize, as Hou Qiong " the emulsion modified production High Speed Cigarette Adhesives of EVA " adopts PVA formal as modification tackifier, this may make to connect in mouth glue a certain amount of aldehyde material; The phthalate that softening agent adopts simultaneously is also harmful material, although patent application CN201110068785 has adopted lemon tri-n-butyl to improve softening agent, but it is still higher that gained connects vinyl-acetic ester, phthalate, formaldehyde content in mouth glue, and connect the tack of mouth glue, cohesive strength, water tolerance need to improve.
Summary of the invention
The present invention with VAE emulsion for base-material, and add vinyl acetate between to for plastic, vinylformic acid, butyl acrylate carry out polymeric modification, improve tack and bonding strength, and softening agent adopts environment-friendly plasticizer; The method that PVA closes hydroxyl changes, while reduction formaldehyde content, improve water tolerance, and gained connects that mouth matrix originally does not contain harmful aldehyde material and phthalate material, Vinyl Acetate Monomer residual quantity is low, environmental protection.
To achieve these goals, the present invention is by the following technical solutions:
Environment-friendly type connects mouth glue at a high speed, is made up of the proportioning raw materials containing following weight content:
Described VAE emulsion is commercially available model is BJ-707, and solid content is 55%.
Described environment-friendly plasticizer is tributyl citrate or epoxy soybean oil;
Described PVA forms for making by oneself according to 2:1 ratio mixed dissolution by 1788 and 1799, and solid content is 15%;
Described initiator is ammonium persulphate or Potassium Persulphate;
Described emulsifying agent be in OP-10 or TX-10 any one or mix with arbitrary proportion;
Described pH adjusting agent is that in sodium malate, sodium bicarbonate or SODIUM PHOSPHATE, MONOBASIC, any one mixes with arbitrary proportion;
Described defoamer is ethanol, and ethanol does not only have the special odor of other alcohols, has again excellent defoaming effect simultaneously;
The present invention further provides the preparation method that a kind of environment-friendly type connects at a high speed mouth glue, in accordance with the following steps:
1) the VAE emulsion of getting 42-50% joins in sealed vessel, open stirrer, setting stirring velocity is 100-150 rev/min, the VAc of 15-18% is added successively in container, the butyl acrylate of 3-6%, the vinylformic acid of 0.6-1.2% and portions of de-ionized water (accounting for the half of deionized water total amount) afterwards Keep agitation mix;
2) heating unit is opened, be heated to 70-75 DEG C, add a certain amount of initiator (accounting for 1/3rd of total amount of initiator), adjustment stirring velocity is 200-250 rev/min, and continue to be warming up to 85-90 DEG C, in 1 hour, remaining initiator is added.Again be warming up to 95 DEG C, interpolation PVA is 6-10%, aminoresin 0.5-1.2%, insulated and stirred 1-1.2 hour.Be cooled to 45-55 DEG C, add environment-friendly plasticizer 1-2.2% in order, emulsifying agent 0.1-0.8%, pH adjusting agent 0.02-0.05%, defoamer 0.1-0.5% and remaining deionized water, continue stir about 0.8-1.5 hour, leave standstill cooling, filter discharging.
The environment-friendly type that obtained by above scheme connect at a high speed mouth glue cost low, with aminoresin, introducing aldehyde material is avoided to the method that the hydroxyl of PVA carries out end-blocking, environment-friendly plasticizer is non-phthalate material, therefore gained connects mouth matrix originally not containing harmful aldehyde material and phthalate material, and Vinyl Acetate Monomer residual volume is low, solid content is 45.2-52%, viscosity is 2800-3300mPas, there is good tack, bonding strength and water tolerance, be applicable to speed of a motor vehicle 12000-15000 prop up/minute high-speed cigarette machine.
Environment-friendly type of the present invention connect at a high speed mouth glue after testing after, each performance index are as follows:
Embodiment
Embodiment 1
The VAE emulsion of getting 42 kilograms joins in sealed vessel, opens stirrer, and setting stirring velocity is 100 revs/min, the VAc of 18 kilograms is added successively in container, the butyl acrylate of 3 kilograms, the deionized water of the vinylformic acid of 1.2 kilograms and 12 kilograms, Keep agitation mixes.Open heating unit, be heated to 70 DEG C, add the initiator of 0.2 kilogram, adjustment stirring velocity is 200 revs/min, and continues to be warming up to 85 DEG C, has been added by remaining initiator in 1 hour.Again be warming up to 95 DEG C, add PVA6 kilogram, 1.2 kilograms, aminoresin, insulated and stirred 1 hour.Be cooled to 48 DEG C, add environment-friendly plasticizer 2.2 kilograms in order, emulsifying agent 0.7 kilogram, pH adjusting agent 0.05 kilogram, defoamer 0.35 kilogram and remaining deionized water, continue stir about 0.8-1.5 hour, leave standstill cooling, filter discharging.
Embodiment 2
The VAE emulsion of getting 50 kilograms joins in sealed vessel, opens stirrer, and setting stirring velocity is 120 revs/min, the VAc of 15 kilograms is added successively in container, the butyl acrylate of 6 kilograms, the deionized water of the vinylformic acid of 0.8 kilogram and 6 kilograms, Keep agitation mixes.Open heating unit, be heated to 75 DEG C, add the initiator (accounting for 1/3rd of total amount of initiator) of 0.12 kilogram, adjustment stirring velocity is 250 revs/min, and continues to be warming up to 90 DEG C, has been added by remaining initiator in 1 hour.Again be warming up to 95 DEG C, add PVA6 kilogram, 0.6 kilogram, aminoresin, insulated and stirred 1.2 hours.Be cooled to 55 DEG C, add environment-friendly plasticizer 1 kilogram in order, emulsifying agent 0.8 kilogram, pH adjusting agent 0.02 kilogram, defoamer 0.41 kilogram and remaining deionized water, continue stir about 1.5 hours, leave standstill cooling, filter discharging.
Embodiment 3
The VAE emulsion of getting 46 kilograms joins in sealed vessel, open stirrer, setting stirring velocity is 110 revs/min, adds the VAc of 18 kilograms in container successively, the butyl acrylate of 4 kilograms, after the vinylformic acid of 0.6 kilogram and 10 kilograms of deionized waters, Keep agitation mixes.Open heating unit, be heated to 73 DEG C, add the initiator of 0.1 kilogram, adjustment stirring velocity is 240 revs/min, and continues to be warming up to 89 DEG C, has been added by remaining initiator in 1 hour.Again be warming up to 95 DEG C, add PVA7 kilogram, 0.5 kilogram, aminoresin, insulated and stirred 1 hour.Be cooled to 50 DEG C, add environment-friendly plasticizer 2 kilograms in order, emulsifying agent 0.3 kilogram, pH adjusting agent 0.03 kilogram, defoamer 0.5 kilogram and remaining deionized water, continue stir about 1 hour, leave standstill cooling, filter discharging.
Embodiment 4
The VAE emulsion of getting 44 kilograms joins in sealed vessel, open stirrer, setting stirring velocity is 120 revs/min, adds the VAc of 17 kilograms in container successively, the butyl acrylate of 6 kilograms, after the vinylformic acid of 1 kilogram and 9 kilograms of deionized waters, Keep agitation mixes.Open heating unit, be heated to 70 DEG C, add the initiator of 0.2 kilogram, adjustment stirring velocity is 200 revs/min, and continues to be warming up to 87 DEG C, has been added by remaining initiator in 1 hour.Again be warming up to 95 DEG C, add PVA9 kilogram, 1.2 kilograms, aminoresin, insulated and stirred 1.2 hours.Be cooled to 48 DEG C, add environment-friendly plasticizer 1.9 kilograms in order, emulsifying agent 0.6 kilogram, pH adjusting agent 0.04 kilogram, defoamer 0.1 kilogram and remaining deionized water, continue stir about 1.4 hours, leave standstill cooling, filter discharging.
Embodiment 5
The VAE emulsion of getting 45 kilograms joins in sealed vessel, open stirrer, setting stirring velocity is 100-150 rev/min, adds the VAc of 16 kilograms in container successively, the butyl acrylate of 5 kilograms, after the vinylformic acid of 0.7 kilogram and 11 kilograms of deionized waters, Keep agitation mixes.Open heating unit, be heated to 75 DEG C, add the initiator of 0.2 kilogram, adjustment stirring velocity is 220 revs/min, and continues to be warming up to 88 DEG C, has been added by remaining initiator in 1 hour.Again be warming up to 95 DEG C, add PVA8 kilogram, 0.8 kilogram, aminoresin, insulated and stirred 1.1 hours.Be cooled to 52 DEG C, add environment-friendly plasticizer 1.7 kilograms in order, emulsifying agent 0.5 kilogram, pH adjusting agent 0.05 kilogram, defoamer 0.2 kilogram and remaining deionized water, continue stir about 1.2 hours, leave standstill cooling, filter discharging.
Embodiment 6
The VAE emulsion of getting 48 kilograms joins in sealed vessel, open stirrer, setting stirring velocity is 130 revs/min, adds the VAc of 17.5 kilograms in container successively, the butyl acrylate of 4.8 kilograms, after the vinylformic acid of 0.9 kilogram and 8 kilograms of deionized waters, Keep agitation mixes.Open heating unit, be heated to 72 DEG C, add 0.2 kilogram of initiator, adjustment stirring velocity is 210 revs/min, and continues to be warming up to 86 DEG C, has been added by remaining initiator in 1 hour.Again be warming up to 95 DEG C, add PVA10 kilogram, 0.7 kilogram, aminoresin, insulated and stirred 1.2 hours.Be cooled to 55 DEG C, add environment-friendly plasticizer 1.5 kilograms in order, emulsifying agent 0.4 kilogram, pH adjusting agent 0.02 kilogram, defoamer 0.3 kilogram and remaining deionized water, continue stir about 1.5 hours, leave standstill cooling, filter discharging.
Embodiment 7
The VAE emulsion of getting 49 kilograms joins in sealed vessel, open stirrer, setting stirring velocity is 150 revs/min, adds the VAc of 16.5 kilograms in container successively, the butyl acrylate of 5.4 kilograms, after the vinylformic acid of 1.1 kilograms and 9 kilograms of deionized waters, Keep agitation mixes.Open heating unit, be heated to 75 DEG C, add 0.1 kilogram of initiator, adjustment stirring velocity is 200 revs/min, and continues to be warming up to 90 DEG C, has been added by remaining initiator in 1 hour.Again be warming up to 95 DEG C, add PVA7.5 kilogram, 0.9 kilogram, aminoresin, insulated and stirred 1 hour.Be cooled to 45 DEG C, add environment-friendly plasticizer 1.2 kilograms in order, emulsifying agent 0.1 kilogram, pH adjusting agent 0.05 kilogram, defoamer 0.4 kilogram and remaining deionized water, continue stir about 0.8 hour, leave standstill cooling, filter discharging.