CN103805098B - Environmental-friendhot hot melt adhesive that can spray and preparation method thereof - Google Patents
Environmental-friendhot hot melt adhesive that can spray and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of Environmental-friendhot hot melt adhesive sprayed and preparation method thereof, the main component of this glue spraying and weight proportion are EVA thermoplastic resin 12%, the EVA thermoplastic resin 18% of melting means 65, water-white rosin 10%, water-white hydrogenated rosin 12%, C 9 petroleum resin 8%, white tackifying resin 14.5%, polyisobutene 5%, the Microcrystalline Wax 8% of melting means 30, it is nontoxic that the Environmental-friendhot hot melt adhesive sprayed of the present invention has environmental protection, not containing organic solvent, Diamond Search, not containing heavy metal, tasteless, excellent initial bonding strength, cohesive strength is excellent, hold tack is excellent, heat-resisting always resistance to, rate of drying is fast, the spray area large (province's glue) of unit weight, many-sided comprehensive advantages such as spraying application efficient quick, there is complete environmental protection, improve operation and construction environment, with low cost, tasteless, the advantages such as fire safety, be widely used in sofa, swivel chair, mattress, pillow, the soft furniture industries such as screen, be particularly suitable for the high-grade exported product of American-European environmental protection and children's product application.
Description
Technical field
The present invention relates to a kind of tackiness agent and preparation method thereof, more particularly relate to a kind of environment protection thermal colloidal sol and preparation method thereof that can be used for spraying, the soft furniture industries such as sofa, mattress case, case and bag, swivel chair, pillow, screen can be widely used in, be particularly useful for sofa and mattress industry.
Background technology
In the use procedure of existing tackiness agent, use the form of construction work of spraying often more can reach than traditional brushing form of construction work to save time, laborsaving, economize the effect such as glue, synergy, play a multiplier effect, glue spraying has now been widely used in the bonding between the materials such as pachydermia, corium, imitation leather, regenerated bark, sponge, cloth, timber, metal, stone material, footwear material; Chinese market is still applied as master with low and middle-end solvent-borne type glue spraying at present, a large amount of organic solvent comprises poisonous halohydrocarbon and triphen (benzene,toluene,xylene) solvent enters in air when constructing, both consume the petroleum oil resource be becoming tight a large amount of day, have a strong impact on again people's lives environment and healthy; Although country rises on September 1st, 2009 and comes into effect standard GB/T 18583-2008 (in indoor decorating and refurnishing materials tackiness agent the mandatory limit standard of objectionable impurities), but it is still too loose for the limitation of triphen and halohydrocarbon, such as: toluene+dimethylbenzene≤15%, low toxicity halohydrocarbon methylene dichloride≤5%, according to American-European-Japanese western developed country that waits for the high standard requirement of environmental protection, GB 18583-2008 national standard is far from being enough.
Although national environmental protection department and GB Committee have put into effect more strict environmental protection standard, tackiness agent environmental labelling product authentication techniques require standard HJ/T 220-2005, emphasis is for triphen, halohydrocarbon, acetone etc. have done more strict limitation, such as: purified petroleum benzin≤0.2%, toluene+dimethylbenzene≤0.2%, halohydrocarbon≤0.2%, acetone≤0.75 ‰, heavy metal is (plumbous, cadmium, mercury, chromium)≤0.5 ‰ etc., but meet the solvent-based adhesive of environmental standard certification, its VOC quantity discharged is still larger, criteria limit is VOC≤750g/L (limiting the quantity too loose), therefore, the solvent-borne type glue spraying meeting environmental labelling product standard is not also the adhesive products of most environmental protection at present, the high-grade field of part is still difficult to meet American-European-Japanese western developed country that waits for the high-environmental standard-required of Diamond Search, answer the strong request of international and domestic high-grade field of Environment Protection, plan in accordance with " the product structure optimization upgrading " of one of the overall development target in Chinese synthetic adhesive and adhesive tape industry " 12 " development program simultaneously, in " 12 " period, China is by the product that superseded part production capacity falls behind and hazardous and noxious substances content is high, greatly develop aq. type, the environmentally friendly environmental protection height such as hot-melting type function tackiness agent, therefore the novel hot melt adhesive sprayed developing the complete environmental protection of no-solvent type becomes an urgent demand and the task of top priority of epoch progress.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the defect that traditional solvent-borne type glue spraying (oiliness glue spraying) and traditional brushing formula hot melt adhesive exist, provide a kind of Diamond Search, pure solid content, containing organic solvent, containing heavy metal, tasteless, there is excellent initial bonding strength, cohesive strength is excellent, hold tack the is excellent Environmental-friendhot hot melt adhesive being suitable for spraying.
Another technical problem that the present invention will solve is to provide a kind of preparation method of the Environmental-friendhot hot melt adhesive sprayed.
The technical scheme solving the problems of the technologies described above employing is such:
The Environmental-friendhot hot melt adhesive sprayed of the present invention, comprises the composition of following weight percent:
The EVA thermoplastic resin 8 ~ 15% of melting means 30;
The EVA thermoplastic resin 15 ~ 20% of melting means 65;
Water-white rosin 7 ~ 12%;
Water-white hydrogenated rosin 10 ~ 15%;
C 9 petroleum resin 6 ~ 10%;
White tackifying resin 10 ~ 20%;
Polyisobutene 3 ~ 8%;
Microcrystalline Wax 6 ~ 12%.
Above-mentioned EVA thermoplastic resin is divided into two classes of melting means 30 and melting means 65, is the high-grade synthetic resins of import superfine, can hot melt very well both them, and carries out complementation in quick-binding location and open hour and softness.
In order to make product anti ageing property better, more soft moistening, construction effect is better, the Environmental-friendhot hot melt adhesive sprayed of the present invention, also comprises the composition of following weight percent:
Anti-aging agent 0.5 ~ 1.0%;
Oxidation inhibitor 0.7 ~ 1.2%;
Wetting agent 0.2 ~ 0.5%;
Softening agent 8 ~ 12%.
The optimum weight proportioning of Environmental-friendhot hot melt adhesive of the present invention is: the EVA thermoplastic resin 12% of melting means 30, the EVA thermoplastic resin 18% of melting means 65, water-white rosin 10%, water-white hydrogenated rosin 12%, C 9 petroleum resin 8%, white tackifying resin 14.5%, polyisobutene 5%, Microcrystalline Wax 8%, wetting agent 0.5%, anti-aging agent 1%, oxidation inhibitor 1%, softening agent 10%, each component sum is 100%.
Described water-white rosin and water-white hydrogenated rosin adopt softening temperature higher than the select quality of 80 DEG C.
Described C 9 petroleum resin employing softening temperature is the industrial first grade of 120 DEG C.
Described white tackifying resin adopts special purified softening temperature to be the Abietyl modified pentaerythritol ester of industrial first grade of 115 DEG C.
Described polyisobutene employing molecular weight is the industrial first grade resin of 8000, belongs to the resin that tack is extremely strong and the open hour are long.
Described Microcrystalline Wax employing fusing point is the industrial first grade of 70 DEG C, serves good snappiness and compatible stability energy for hot melt adhesive system.
OPPD environmental protection product selected by described anti-aging agent, and 1010 environmental protection product selected by described oxidation inhibitor, and fatty alcohol-polyoxyethylene ether environmental protection product selected by described wetting agent, and naphthenic oil environmental protection product selected by described softening agent.
The preparation method of the Environmental-friendhot hot melt adhesive sprayed of the present invention comprises following processing step:
A. by proportioning, softening agent, anti-aging agent, oxidation inhibitor, wetting agent are dropped into in the container of whipping appts, start to import pre-heated high temperature heat conductive oil to heat up in reacting kettle jacketing, start static hot melt, temperature being risen to temperature of charge is 100 DEG C ~ 120 DEG C, and is incubated 8 ~ 12 minutes at this temperature;
B. drop into water-white rosin, water-white hydrogenated rosin, C 9 petroleum resin, white tackifying resin, polyisobutene, Microcrystalline Wax by proportioning, continue static hot melt, being warming up to mixture is 120 DEG C ~ 130 DEG C, and is incubated 15 ~ 25 minutes at this temperature;
C. then by proportioning, the EVA thermoplastic resin of the EVA thermoplastic resin of melting means 30 and melting means 65 is dropped into mixture reactor, closely close dog-house, open vacuum valve, be evacuated to vacuum tightness for-0.1MPa;
D. continue to heat up, static hot melt, rises to 150 DEG C ~ 170 DEG C by mixture temperature, and is incubated 15 ~ 25 minutes at this temperature;
E. start slowly to stir to carry out dynamic hot melt, first stirring at low speed melt compounding body 25 ~ 35 minutes; Then accelerate stirring velocity to stir 50 ~ 70 minutes;
F. when material color is pale yellow transparent uniform liquid, sampling detects, qualified rear discharging cooling forming packaging.
In described step e, the rotating speed of agitator is: early stage 200 revs/min, later stage 1000 revs/min.
Compare with traditional painting brush-type hot melt adhesive with traditional solvent-borne type glue spraying, tool of the present invention has the following advantages:
1. do not contain any organic solvent completely in the present invention's formula, belonging to Diamond Search, pure solid content product, is the tackiness agent kind of complete environmental protection.
2. formula of the present invention have employed the environmental protection synthetic resins, tackifying resin, environmental protection auxiliary agent etc. of more ratio, do not rely on the industrial chemicals of petrochemical complex completely, stop the use of organic solvent raw material completely, be not subject to the restriction of international petroleum fluctuation and affect, substantially the serious restriction of international oil price to adhesive industry has been broken away from, with low cost.
3. the pure solid content of formulation product Diamond Search of the present invention, not containing any organic solvent, therefore formulation product fire prevention of the present invention, in production, transport, use, store in safety, can not the accident such as presence of fire.
4. the present invention's environmental protection of filling a prescription very can be applicable to spraying by spraying hot-melt adhesive, and very even during spraying, construction economizes glue, with low cost, changes the form of construction work that traditional hot melt adhesive is only suitable for the stiff backwardness such as brush coating and glue-applying point glue completely.
5. the interpolation of formula of the present invention owing to stopping any organic solvent, owing to not containing organic solvent, therefore relative to obviously shortening time of drying after traditional glue spraying glue spraying, general traditional glue spraying time of drying is 5 ~ 10 minutes, and this formula glue spraying is only 5 ~ 10 seconds time of drying, drastically increase operating efficiency 100 times.
6. formula of the present invention is owing to adopting the thermoplastic synthetic resin, tackifying resin, environmental protection auxiliary agent etc. of low smell, without any organic solvent, therefore this formulation product belongs to typical tasteless product, the spraying application period has no irritating odor generation, remain with the finished product free from extraneous odour of glue, the dark great kindness by consumers in general.
7. formula of the present invention is owing to the addition of the High performance plastic resin of import and high-grade tackifying resin, adds special blending process, and the hot melt adhesive that this formula can be sprayed has more excellent initial bonding strength, hold tack, stripping strength etc. than traditional glue spraying.
8. formula of the present invention is owing to the addition of the high functional agent of import, as grade environmental protection anti-aging agent, oxidation inhibitor, wetting agent, softening agent, and then the hot melt adhesive that this formula can be sprayed has the overall targets such as more excellent stability, persistence, flexibility, cohesive strength than traditional glue spraying.
Embodiment
Below in conjunction with embodiment, the present invention is described in further details.
example A
1. preparation formula:
Material name weight proportion (%)
The EVA thermoplastic resin 10 of melting means 30
The EVA thermoplastic resin 16 of melting means 65
Water-white rosin 10
Water-white hydrogenated rosin 14
C 9 petroleum resin 8
White tackifying resin 16.5
Polyisobutene 4
Microcrystalline Wax 7
Wetting agent 0.5
Anti-aging agent 0.8
Oxidation inhibitor 1.2
Softening agent 12
Add up to 100.
2. preparation technology:
A. the naphthenic oil measured, anti-aging agent, oxidation inhibitor, wetting agent are dropped into in the container of whipping appts, start to import pre-heated high temperature heat conductive oil to heat up in reacting kettle jacketing, start static hot melt, temperature being risen to temperature of charge is 110 DEG C, and is incubated 10 minutes at this temperature;
B. accurate-metering drops into water-white rosin, water-white hydrogenated rosin, C 9 petroleum resin, white tackifying resin, polyisobutene, Microcrystalline Wax, and continue static hot melt, being warming up to mixture is 125 DEG C, and is incubated 20 minutes at this temperature;
C. then the EVA thermoplastic resin of the EVA thermoplastic resin of the melting means 30 of accurate measurement and melting means 65 is dropped into mixture reactor, closely close dog-house, open vacuum valve, be evacuated to vacuum tightness for-0.1MPa;
D. continue to heat up, static hot melt, rises to 160 DEG C by mixture temperature, and is incubated 20 minutes at this temperature;
E. start slowly to stir to carry out dynamic hot melt, first stirring at low speed, stirring velocity is 200R/MIN, stirs hot melt mixture 30 minutes under this stirring velocity; Then accelerate stirring velocity, stirring velocity is risen to 1000R/MIN, and stir 60 minutes under this speed;
F. when material color is pale yellow transparent uniform liquid, sampling detects the index such as viscosity, viscosity, qualified rear discharging cooling forming packaging.
3. made end properties test index (test environment: temperature: 25 DEG C, humidity: 70%) as shown in table 1:
Table 1:
4. the purposes of made finished product:
This Environmental-friendhot hot melt adhesive that can spray is applicable to the bonding between the materials such as sponge, cloth, EVA, PU pachydermia, corium, PU imitation leather, regenerated bark, timber, metal, stone material, footwear material, and Application Areas is: the soft furniture industries such as sofa, mattress, case and bag, swivel chair, pillow, screen, timber.
Spraying application behaviour does step:
A. clean material: clean clean by sticky material surface, must not have grease, dust or other impurity;
B. even application: nozzle distance material surface about 0.3 meter, evenly walks rifle, even application;
C. appropriateness hangs: after even application, hangs 5 ~ 10 seconds and bonds rapidly afterwards at once;
D. pressurization is bonded: firmly pressurization during bonding, can make bonding effect better.
Bonding effect: when firmly tearing with bonded material sample material destroy but glue-line stand intact as qualified.
example B
1. preparation formula:
Material name weight proportion (%)
The EVA thermoplastic resin 12 of melting means 30
The EVA thermoplastic resin 18 of melting means 65
Water-white rosin 10
Water-white hydrogenated rosin 12
C 9 petroleum resin 8
White tackifying resin 14.5
Polyisobutene 5
Microcrystalline Wax 8
Wetting agent 0.5
Anti-aging agent 1
Oxidation inhibitor 1
Softening agent 10
Add up to 100.
2. preparation technology:
A. the naphthenic oil measured, anti-aging agent, oxidation inhibitor, wetting agent are dropped into in the container of whipping appts, start to import pre-heated high temperature heat conductive oil to heat up in reacting kettle jacketing, start static hot melt, temperature being risen to temperature of charge is 110 DEG C, and is incubated 10 minutes at this temperature;
B. accurate-metering drops into water-white rosin, water-white hydrogenated rosin, C 9 petroleum resin, white tackifying resin, polyisobutene, Microcrystalline Wax, and continue static hot melt, being warming up to mixture is 125 DEG C, and is incubated 20 minutes at this temperature;
C. then the EVA thermoplastic resin of the EVA thermoplastic resin of the melting means 30 of accurate measurement, melting means 65 is dropped into mixture reactor, closely close dog-house, open vacuum valve, be evacuated to vacuum tightness for-0.1MPa;
D. continue to heat up, static hot melt, rises to 160 DEG C by mixture temperature, and is incubated 20 minutes at this temperature;
E. start slowly to stir to carry out dynamic hot melt, first stirring at low speed, stirring velocity is 200R/MIN, stirs hot melt mixture 30 minutes under this stirring velocity; Then accelerate stirring velocity, stirring velocity is risen to 1000R/MIN, and stir 60 minutes under this speed;
F. when material color is pale yellow transparent uniform liquid, sampling detects the index such as viscosity, viscosity, qualified rear discharging cooling forming packaging.
3. made end properties test index (test environment: temperature: 25 DEG C, humidity: 70%) as shown in table 2:
Table 2:
4. the purposes of made finished product:
This Environmental-friendhot hot melt adhesive that can spray is applicable to the bonding between the materials such as sponge, cloth, EVA, PU pachydermia, corium, PU imitation leather, regenerated bark, timber, metal, stone material, footwear material, and Application Areas is: the soft furniture industries such as sofa, mattress, case and bag, swivel chair, pillow, screen, timber.
Spraying application behaviour does step:
A. clean material: clean clean by sticky material surface, must not have grease, dust or other impurity;
B. even application: nozzle distance material surface about 0.3 meter, evenly walks rifle, even application;
C. appropriateness hangs: after even application, hangs 5 ~ 10 seconds and bonds rapidly afterwards at once;
D. pressurization is bonded: firmly pressurization during bonding, can make bonding effect better.
Bonding effect: when firmly tearing with bonded material sample material destroy but glue-line stand intact as qualified.
example C
1. preparation formula:
Material name weight proportion (%)
The EVA thermoplastic resin 14 of melting means 30
The EVA thermoplastic resin 20 of melting means 65
Water-white rosin 8
Water-white hydrogenated rosin 10
C 9 petroleum resin 10
White tackifying resin 12
Polyisobutene 6
Microcrystalline Wax 10
Wetting agent 0.3
Anti-aging agent 0.9
Oxidation inhibitor 0.8
Softening agent 8
Add up to 100.
2. preparation technology:
A. the naphthenic oil measured, anti-aging agent, oxidation inhibitor, wetting agent are dropped into in the container of whipping appts, start to import pre-heated high temperature heat conductive oil to heat up in reacting kettle jacketing, start static hot melt, temperature being risen to temperature of charge is 110 DEG C, and is incubated 10 minutes at this temperature;
B. accurate-metering drops into water-white rosin, water-white hydrogenated rosin, C 9 petroleum resin, white tackifying resin, polyisobutene, Microcrystalline Wax, and continue static hot melt, being warming up to mixture is 125 DEG C, and is incubated 20 minutes at this temperature;
C. then the EVA thermoplastic resin of the EVA thermoplastic resin of the melting means 30 of accurate measurement, melting means 65 is dropped into mixture reactor, closely close dog-house, open vacuum valve, be evacuated to vacuum tightness for-0.1MPa;
D. continue to heat up, static hot melt, rises to 160 DEG C by mixture temperature, and is incubated 20 minutes at this temperature;
E. start slowly to stir to carry out dynamic hot melt, first stirring at low speed, stirring velocity is 200R/MIN, stirs hot melt mixture 30 minutes under this stirring velocity; Then accelerate stirring velocity, stirring velocity is risen to 1000R/MIN, and stir 60 minutes under this speed;
F. when material color is pale yellow transparent uniform liquid, sampling detects the index such as viscosity, viscosity, qualified rear discharging cooling forming packaging.
3. made end properties test index (test environment: temperature: 25 DEG C, humidity: 70%) as shown in table 3:
Table 3:
4. the purposes of made finished product:
This Environmental-friendhot hot melt adhesive that can spray is applicable to the bonding between the materials such as sponge, cloth, EVA, PU pachydermia, corium, PU imitation leather, regenerated bark, timber, metal, stone material, footwear material, and Application Areas is: the soft furniture industries such as sofa, mattress, case and bag, swivel chair, pillow, screen, timber.
Spraying application behaviour does step:
A. clean material: clean clean by sticky material surface, must not have grease, dust or other impurity;
B. even application: nozzle distance material surface about 0.3 meter, evenly walks rifle, even application;
C. appropriateness hangs: after even application, hangs 3 ~ 5 seconds and bonds rapidly afterwards at once;
D. pressurization is bonded: firmly pressurization during bonding, can make bonding effect better.
Bonding effect: when firmly tearing with bonded material sample material destroy but glue-line stand intact as qualified.
In the various embodiments described above, described water-white rosin and water-white hydrogenated rosin adopt softening temperature higher than the select quality of 80 DEG C, described C 9 petroleum resin employing softening temperature is the industrial first grade of 120 DEG C, described white tackifying resin employing softening temperature is the Abietyl modified pentaerythritol ester of industrial first grade of 115 DEG C, described polyisobutene employing molecular weight is the industrial first grade resin of 8000, and described Microcrystalline Wax employing fusing point is the industrial first grade of 70 DEG C.Described anti-aging agent can select OPPD anti-aging agent (chemical name: N-secondary octyl-N '-diphenyl-para-phenylene diamine) environmental protection product, described oxidation inhibitor can select 1010 oxidation inhibitor { chemical name: four ［ β (3,5-di-tert-butyl-hydroxy phenyl) propionic acid ］ pentaerythritol ester } environmental protection product, described wetting agent can select fatty alcohol-polyoxyethylene ether environmental protection product, and described softening agent can select naphthenic oil environmental protection product.
Claims (7)
1. the Environmental-friendhot hot melt adhesive that can spray, is characterized in that, comprises the composition of following weight percent:
The EVA thermoplastic resin 8 ~ 15% of melting means 30;
The EVA thermoplastic resin 15 ~ 20% of melting means 65;
Water-white rosin 7 ~ 12%;
Water-white hydrogenated rosin 10 ~ 15%;
C 9 petroleum resin 6 ~ 10%;
White tackifying resin 10 ~ 20%;
Polyisobutene 3 ~ 8%;
Microcrystalline Wax 6 ~ 12%.
2. the Environmental-friendhot hot melt adhesive sprayed according to claim 1, is characterized in that, also comprises the composition of following weight percent:
Anti-aging agent 0.5 ~ 1.0%;
Oxidation inhibitor 0.7 ~ 1.2%;
Wetting agent 0.2 ~ 0.5%;
Softening agent 8 ~ 12%.
3. the Environmental-friendhot hot melt adhesive sprayed according to claim 2, it is characterized in that: the composition of this Environmental-friendhot hot melt adhesive that can spray and weight proportion thereof are: the EVA thermoplastic resin 12% of melting means 30, the EVA thermoplastic resin 18% of melting means 65, water-white rosin 10%, water-white hydrogenated rosin 12%, C 9 petroleum resin 8%, white tackifying resin 14.5%, polyisobutene 5%, Microcrystalline Wax 8%, wetting agent 0.5%, anti-aging agent 1%, oxidation inhibitor 1%, softening agent 10%, each component sum is 100%.
4. the Environmental-friendhot hot melt adhesive sprayed according to claim 1,2 or 3, it is characterized in that: described water-white rosin and water-white hydrogenated rosin adopt softening temperature higher than the select quality of 80 DEG C, described C 9 petroleum resin employing softening temperature is the industrial first grade of 120 DEG C, described white tackifying resin employing softening temperature is the Abietyl modified pentaerythritol ester of industrial first grade of 115 DEG C, described polyisobutene employing molecular weight is the industrial first grade resin of 8000, and described Microcrystalline Wax employing fusing point is the industrial first grade of 70 DEG C.
5. the Environmental-friendhot hot melt adhesive sprayed according to Claims 2 or 3, it is characterized in that: OPPD anti-aging agent (chemical name: N-secondary octyl-N '-diphenyl-para-phenylene diamine) environmental protection product selected by described anti-aging agent, 1010 oxidation inhibitor { chemical name: four ［ β (3 selected by described oxidation inhibitor, 5-di-tert-butyl-hydroxy phenyl) propionic acid ］ pentaerythritol ester } environmental protection product, fatty alcohol-polyoxyethylene ether environmental protection product selected by described wetting agent, and naphthenic oil environmental protection product selected by described softening agent.
6. a preparation method for the Environmental-friendhot hot melt adhesive sprayed according to claim 2, is characterized in that comprising following processing step:
A. by proportioning, softening agent, anti-aging agent, oxidation inhibitor, wetting agent are dropped into in the container of whipping appts, start to import pre-heated high temperature heat conductive oil to heat up in reacting kettle jacketing, start static hot melt, temperature being risen to temperature of charge is 100 DEG C ~ 120 DEG C, and is incubated 8 ~ 12 minutes at this temperature;
B. drop into water-white rosin, water-white hydrogenated rosin, C 9 petroleum resin, white tackifying resin, polyisobutene, Microcrystalline Wax by proportioning, continue static hot melt, being warming up to mixture is 120 DEG C ~ 130 DEG C, and is incubated 15 ~ 25 minutes at this temperature;
C. then by proportioning, the EVA thermoplastic resin of the EVA thermoplastic resin of melting means 30 and melting means 65 is dropped into mixture reactor, closely close dog-house, open vacuum valve, be evacuated to vacuum tightness for-0.1MPa;
D. continue to heat up, static hot melt, rises to 150 DEG C ~ 170 DEG C by mixture temperature, and is incubated 15 ~ 25 minutes at this temperature;
E. start slowly to stir to carry out dynamic hot melt, first stirring at low speed melt compounding body 25 ~ 35 minutes; Then accelerate stirring velocity to stir 50 ~ 70 minutes;
F. when material color is pale yellow transparent uniform liquid, sampling detects, qualified rear discharging cooling forming packaging.
7. the preparation method of the Environmental-friendhot hot melt adhesive sprayed according to claim 6, is characterized in that: in described step e, and the rotating speed of agitator is: early stage 200 revs/min, later stage 1000 revs/min.
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| CN111139031A (en) * | 2020-01-07 | 2020-05-12 | 广东东方一哥新材料股份有限公司 | High-elasticity chlorine-free environment-friendly spray adhesive and preparation method thereof |
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| US3875095A (en) * | 1973-04-11 | 1975-04-01 | Mitsui Petrochemical Ind | Hot melt compositions comprising elva and a hydrocarbon copolymer |
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