CN102260467A - Method for controlling production size of hot melt adhesive - Google Patents
Method for controlling production size of hot melt adhesive Download PDFInfo
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- CN102260467A CN102260467A CN201010192737XA CN201010192737A CN102260467A CN 102260467 A CN102260467 A CN 102260467A CN 201010192737X A CN201010192737X A CN 201010192737XA CN 201010192737 A CN201010192737 A CN 201010192737A CN 102260467 A CN102260467 A CN 102260467A
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Abstract
The invention relates to a method for controlling a production size of a hot melt adhesive. The method comprises the following steps: discharging hot melt adhesive formula raw materials subjected to mixing, fusing, stirring and cooling by utilizing a constant pressure device and pump control; stirring and cooling the hot melt adhesive formula raw materials at the outlet of the pump again by using a heat exchanger; and finally, pressing and forming the hot melt adhesive formula raw materials by using a mould, removing bubbles so as to finally form hot melt adhesive tapes. By using the method, not only can the size stability of the finally formed cylinder-shaped hot melt adhesive be improved but also the process capacity and yield of the cylinder-shaped hot melt adhesive are improved.
Description
Technical field
The present invention relates to a kind of hot melt adhesive production dimension control method, particularly relate to the method that a kind of cylindric hot melt adhesive is produced dimensional stabilizing control.
Background technology
Hot melt adhesive (hot-melt adhesive) is widely used in then on the purposes, is to be attached to then place of desire with the hot melt state during use, cools off then and solidifies.The range of application of hot melt adhesive comprises ornaments, toy, handicraft, fender, various packing, the woodenware group is upright or the upright electronics industry etc. that reaches of general group.According to the difference of use-pattern, hot melt adhesive has strip (glue stick), bar-shaped or cylindric, granular (granule) and sheet etc.Bar-shapedly or cylindric often apply use by thermosol gelgun (hot melt glue gun), thermosol gelgun is easy to operate, safe in utilization, and cylindric hot melt adhesive has all sizes such as big or small glue rod, be divided into general job use with work continuously, industrial etc.
Because cylindric hot melt adhesive must use in thermosol gelgun, the adhesive tape size need cooperate the thermosol gelgun specification, therefore if hot melt adhesive bar size instability (excessive or too small) then can't cooperate the thermosol gelgun specification, the situation that can cause thermosol gelgun to use.Therefore the size control of cylindric hot melt adhesive is a ring important in the hot melt adhesive production technology.
Fig. 1 is the synoptic diagram that shows a hot melt adhesive Production Flow Chart.At first step 102 is carried out hot melt adhesive raw material fusion mixing.Then step 104 is carried out hot melt adhesive raw material binder removal.Step 106 is carried out hot melt adhesive voltage stabilizing and quantitative moulding then.Then step 108 is carried out hot melt adhesive and is cooled.Step 110 carries out that hot melt adhesive cuts and the packing of product of step 112 hot melt adhesive then.
But the production of cylindric hot melt adhesive is moulding in the water, after the aqueous glue behind the hot melt carries out quantitative moulding by die head, meet water cooling and promptly form cylindric hot melt adhesive tape, but this kind forming step is wayward because of the shaping characteristic of hot melt adhesive, cause the cylindric hot melt adhesive size deviation of producing big.
This shows that the method for above-mentioned existing production hot melt adhesive obviously still has inconvenience and defective, and demands urgently further being improved in method and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and general method does not have appropriate method to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of new hot melt adhesive production dimension control method, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
In view of this, the present invention proposes a kind of hot melt adhesive and produces the method for dimensional stabilizing control to improve the cylindric hot melt adhesive size stability of final molding.
Summary of the invention
The objective of the invention is to, overcome the defective of the method existence of existing production hot melt adhesive, and provide a kind of new hot melt adhesive production dimension control method, technical problem to be solved is to make its pump that utilizes particular design and weighing apparatus pressure device or pressure stabilizing tank, the glue amount of stable control extrusion in hot melt adhesive making processes, the cylindric hot melt adhesive dimensional stability of final molding is improved, be very suitable for practicality.
Another object of the present invention is to, a kind of new hot melt adhesive production dimension control method is provided, technical problem to be solved is to make it can promote cylindric hot melt adhesive technological ability and output, thereby is suitable for practicality more.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of hot melt adhesive production dimension control method that the present invention proposes, it comprises following steps.At first utilize a weighing apparatus pressure device will discharge through mixing melting stirring and refrigerative thermosol formula raw material with at least one pump.The thermosol formula raw material is stirred once more and cool off at pump outlet with at least one heat exchanger then, to form paste.At last with the thermosol formula raw material extrusion formation hot melt adhesive tape of at least one mould with paste.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid hot melt adhesive production dimension control method, wherein said weighing apparatus pressure device are used to make the back pressure of this pump fixing and feeding is abundant, and this pump is the output that is used to control this thermosol formula raw material.
Aforesaid hot melt adhesive production dimension control method, wherein said weighing apparatus pressure device is by pressure citation this pump of control and reflux with micromanipulator, wherein this reflux is to install a stainless steel chuck ball valve when pipe arrangement additional, and comes balance to support pressure equilibrium by the switch size of this ball valve.
Aforesaid hot melt adhesive production dimension control method, wherein said pump comprises discharge pump and toothed gear pump, and wherein this discharge pump is controlled the output of this thermosol formula raw material, and this toothed gear pump is used for extrusion molding.
Aforesaid hot melt adhesive production dimension control method, wherein said heat exchanger stirs this thermosol formula raw material once more and cools off to form range of viscosities at this pump outlet is 100,000mPas～500, the paste of 000mPas makes this thermosol formula raw material of paste can stablize moulding.
Aforesaid hot melt adhesive production dimension control method, temperature range was controlled between about 80 ℃～100 ℃ when wherein said hot melt adhesive tape was in prison moulding, so that this thermosol formula raw material of paste reaches preferable range of viscosities 200,000mPas～350,000mPas guarantees that the diameter of this hot melt adhesive tape of extrusion is stablized.
Aforesaid hot melt adhesive production dimension control method more comprises: this hot melt adhesive tape is carried out antistick handle; With this hot melt adhesive tape cooling; And this hot melt adhesive tape is cut.
Aforesaid hot melt adhesive production dimension control method, it is with an automatic circulation device liquid medicine to be drenched to carry out the antistick processing on this hot melt adhesive tape, and with a cooling trough this hot melt adhesive tape is cooled off, and with a clipper this hot melt adhesive tape is cut again.
Aforesaid hot melt adhesive production dimension control method, wherein said thermosol formula raw material is when mixing the melting stirring, and temperature range is controlled between about 120 ℃～170 ℃.
Aforesaid hot melt adhesive production dimension control method more comprises with a defoaming device this hot melt adhesive tape is carried out de-bubble.
The present invention compared with prior art has tangible advantage and beneficial effect.By technique scheme, hot melt adhesive production dimension control method of the present invention has following advantage and beneficial effect at least: the present invention can not only improve the cylindric hot melt adhesive dimensional stability of final molding, more can promote cylindric hot melt adhesive technological ability and output.
In sum, the invention relates to a kind of hot melt adhesive production dimension control method, this method utilization weighing apparatus pressure device and pump control will be through mixing the discharge of melting stirring and refrigerative thermosol formula raw material, and the thermosol formula raw material is stirred once more and cool off at pump discharge with heat exchanger.At last with mould with thermosol formula raw material extrusion molding and carry out de-bubble and form the hot melt adhesive tape.The present invention has obvious improvement technically, has tangible positively effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technique means of the present invention, and can be implemented according to the content of specification sheets, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the synoptic diagram that shows a hot melt adhesive Production Flow Chart.
Fig. 2 is that the hot melt adhesive that shows one embodiment of the invention is produced the method flow of dimensional stabilizing control and the synoptic diagram of the equipment of use.
Fig. 3 is the synoptic diagram that shows the weighing apparatus pressure device in one embodiment of the invention.
Fig. 4 A-Fig. 4 E is the synoptic diagram that shows the defoaming device in one embodiment of the invention.
Fig. 5 is the synoptic diagram that shows the tractor in one embodiment of the invention.
Fig. 6 is the synoptic diagram that shows the clipper in one embodiment of the invention.
102: carry out the fusion of hot melt adhesive raw material and mix 104: carry out hot melt adhesive raw material binder removal
106: carry out hot melt adhesive voltage stabilizing and quantitative moulding 108: carry out hot melt adhesive and cool
110: carry out hot melt adhesive and cut 112: the hot melt adhesive packing of product
202a: mix steel basin 202b: mix steel basin
204: store cooling tank 206: the weighing apparatus pressure device
208a-208f: pump of constant delivery type 210a-210f: heat exchanger
212a-212f: mould 214a-214f: defoaming device
216: cooling trough 218: automatic circulation device
220: de-watering apparatus 222: tractor
224: clipper
Embodiment
Reach technique means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of hot melt adhesive production dimension control method, method, step, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Some embodiments of the present invention will be described in detail as follows.Yet except following description, the present invention can also be widely implements at other embodiment, and protection scope of the present invention is not subjected to the qualification of embodiment, and its protection domain with claim is as the criterion.Moreover for clearer description being provided and being more readily understood the present invention, graphic interior each several part is not drawn according to its relative dimension, and some size is compared with other scale dependents and exaggerated; Incoherent detail section does not show fully yet, in the hope of graphic succinct.
Fig. 2 is that the hot melt adhesive that shows one embodiment of the invention is produced the method flow of dimensional stabilizing control and the synoptic diagram of the equipment of use.At first the thermosol formula raw material stirs with 202b or rabbling roaster mixing melting to mix steel basin 202a, and the hot melt adhesive temperature must be controlled between about 120 ℃～170 ℃ during melting.Thermosol formula raw material after then melting being stirred places and stores cooling tank 204 coolings.Then with a weighing apparatus pressure device 206 or a pressure stabilizing tank, make the back pressure of each pump fixing and feeding is abundant.Pump comprises discharge pump and pump of constant delivery type (that is toothed gear pump) 208a～208f, and wherein discharge pump is controlled the output of thermosol formula raw material, and pump of constant delivery type 208a～208f is used for the extrusion molding of back segment.Heat exchanger 210a～210f is installed in pump of constant delivery type 208a～208f outlet respectively, and hot melt adhesive is stirred and abundant cooling in the paste state once more, and wherein heat exchanger 210a～210f can comprise water cooler.Stir once more and cooled hot melt adhesive through with the mould 212a～212f of requirement specification made by plastic emitting in the water, be enclosed within mould 212a～212f end by specially designed defoaming device 214a～214f again, and open bubble siphoned away to guarantee that the hot melt adhesive surface does not have the project grain shape and influences outward appearance through the water pump circulation.Mould 212a～212f comprises not dragon (Teflon) mould of iron.Finally the hot melt adhesive tape is cooled off through a cooling trough 216.Cooling trough 216 comprises about 20 meters long cooling troughes and a frozen water unit.Then liquid medicine is drenched and on the hot melt adhesive tape, carry out antistick (anti-b1ocking) and handle, utilize a de-watering apparatus 220 water to be blown off again, make hot melt adhesive tape surface form an antistick layer and prevent to be stained with mutually sticking with air with an automatic circulation device 218.At last by a tractor 222, the traction of hot melt adhesive tape through the cooling trough cooling, and is carried out hot melt adhesive by a clipper 224 and cut into the length of wanting.
The present invention utilizes toothed gear pump and potentiostat that adhesive tape extrusion process is controlled, and the glue amount of stable control extrusion in making processes improves the cylinder glue dimensional stability of final molding.The present invention presses with toothed gear pump and potentiostat control weighing apparatus.When formula material mixed melting in rabbling roaster, the hot melt adhesive temperature range need be controlled between about 120 ℃～170 ℃.When hot melt adhesive tape extrusion molding, must reduce the hot melt adhesive temperature range, it is controlled between about 80 ℃～100 ℃, stable with the diameter of guaranteeing extrusion hot melt adhesive tape.
In order to improve production capacity and to stablize outward appearance, the above embodiment of the present invention is once extruded with six strip hot melt adhesive tape, and each is extruded by a certain amount of pump and control respectively six strip hot melt adhesive tape simultaneously.Though output six strip hot melt adhesive tape are not limited to output six strip hot melt adhesive tape among the embodiment.The present invention produces cylindric hot melt adhesive with full-automatic discharge apparatus and the two collocation of constant volume discharge device, reaches the purpose of cylindric hot melt adhesive production size control.The full-automatic discharge of leading portion reaches the effect of steady pressure by a weighing apparatus pressure device, and then makes the pump feeding stable.The weighing apparatus pressure device is to control above-mentioned pump and reflux (piping system) with micromanipulator by the pressure citation, and wherein reflux is to install a stainless steel chuck ball valve when pipe arrangement additional, and comes balance to support pressure equilibrium by the switch size of this ball valve.Fig. 3 is the synoptic diagram that shows the weighing apparatus pressure device in one embodiment of the invention.By Frequency Converter Control, reach stable gel quantity through each pump, plastic emitting speed can be 40 milliliters/circle (cc/circle).Heat exchanger by a liftable temperature, the special processing of inner warp can be mixed hot melt adhesive once more, be cooled to colloid such as paste during production, moulding easily, wherein the range of viscosities of paste can be 100,000mPas～500,000mPas, be 200 more with range of viscosities, 000mPas～350,000mPas is preferable.Plastic emitting from water forms out of roundness to the hot melt colloid through mould.The gum outlet of mould is because of the easy water vapor bubbles that produces of cooling relation, and defoaming device in the special water of making utilizes water pump to draw water the bubble absorption is removed.Fig. 4 A-Fig. 4 E is the synoptic diagram that shows the defoaming device in one embodiment of the invention.Then utilize a cooling trough and coolant controlled frozen water unit cooling water circulation refrigeration with tank.With automatic circulation device liquid medicine is drenched antistick on adhesive tape then, water is blown off with air with de-watering apparatus again, make formation one antistick layer in hot melt adhesive tape surface sticking to prevent to be stained with mutually.Fig. 5 is the synoptic diagram that shows the tractor in one embodiment of the invention, and tractor can be by servomotor control, by stable speed the hot melt adhesive tape is drawn to cooling trough and cools off.Fig. 6 is the synoptic diagram that shows the clipper in one embodiment of the invention, and clipper can be controlled by servomotor, therefore can be synchronous with pulling speed.
Table 1 is the visual testing recorder that shows the cylindric hot melt adhesive made from the method and apparatus of hot melt adhesive production dimensional stabilizing of the present invention control.Data presentation hot melt adhesive tape diameter dimension is all controlled within limits in the table, and most data presentation technological abilities (CPK) can reach A, more than the B level.
Table 1
Cylinder glue visual testing recorder
Technology precision Cp=(USL-LSL)/6 σ, wherein USL is that upper specification limit (UpperSpecification Level), LSL are that specification lower limit (Lower Specification Level), σ are the standard deviation of metric data, and Cp is with standard classifications successively such as 1.33≤Cp, 1.00≤Cp＜1.33,0.83≤Cp＜1.00, Cp＜0.83.As shown in table 1, all Cp are all greater than 1.33, so all reach five-star standard.In addition, technological ability Cpk=Cp (1-Ca), and Ca=(X-μ)/[(USL-LSL)/2], wherein X is that mean value, the μ of metric data are the specification intermediate value, and 1.67≤Cpk is that A+ level, 1.33≤Cpk＜1.67 are D level for B level, 0.67＜Cp≤1.00 for C level, Cp＜0.67 for A level, 1.00≤Cpk＜1.33, and is as shown in table 1.PPM is the technology fraction defective, and first-pass yield (First Pass Yield, FPY)=zero defect product number of packages/input product number of packages.
The present invention utilizes a weighing apparatus pressure device to carry out full-automatic heat melten gel discharge, reaches the steady pressure effect, and then makes the pump feeding stable.Through pump of constant delivery type control, the hot melt adhesive plastic emitting reaches stable output.By the heat exchanger of liftable temperature, hot melt adhesive can be mixed once more, and moulding easily.Then plastic emitting from water forms cylindric hot melt adhesive to the hot melt colloid through mould.Therefore the present invention can not only improve the cylindric hot melt adhesive dimensional stability of final molding, more can promote cylindric hot melt adhesive technological ability and output.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solution of the present invention content, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (10)
1. hot melt adhesive production dimension control method, it is characterized in that it may further comprise the steps: utilize a weighing apparatus pressure device will discharge through mixing melting stirring and refrigerative thermosol formula raw material with at least one pump, and the thermosol formula raw material is stirred once more and cool off at this pump outlet, and this thermosol formula raw material extrusion is formed the hot melt adhesive tape with at least one mould with at least one heat exchanger.
2. hot melt adhesive production dimension control method according to claim 1 is characterized in that wherein said weighing apparatus pressure device is used to make the back pressure of this pump fixing and feeding is abundant, and this pump is the output that is used to control this thermosol formula raw material.
3. hot melt adhesive production dimension control method according to claim 2, it is characterized in that wherein said weighing apparatus pressure device is by pressure citation this pump of control and reflux with micromanipulator, wherein this reflux is to install a stainless steel chuck ball valve when pipe arrangement additional, and comes balance to support pressure equilibrium by the switch size of this ball valve.
4. hot melt adhesive production dimension control method according to claim 2 is characterized in that wherein said pump comprises discharge pump and toothed gear pump, and wherein this discharge pump is controlled the output of this thermosol formula raw material, and this toothed gear pump is used for extrusion molding.
5. hot melt adhesive production dimension control method according to claim 1, it is characterized in that wherein said heat exchanger stirs this thermosol formula raw material once more and cools off to form range of viscosities at this pump outlet is 100,000mPas～500, the paste of 000mPas makes this thermosol formula raw material of paste can stablize moulding.
6. hot melt adhesive production dimension control method according to claim 5, temperature range is controlled between about 80 ℃～100 ℃ when it is characterized in that wherein said hot melt adhesive tape is in prison moulding, so that this thermosol formula raw material of paste reaches preferable range of viscosities 200,000mPas～350,000mPas guarantees that the diameter of this hot melt adhesive tape of extrusion is stablized.
7. hot melt adhesive production dimension control method according to claim 1 is characterized in that more comprising:
This hot melt adhesive tape is carried out antistick to be handled;
With this hot melt adhesive tape cooling; And
This hot melt adhesive tape is cut.
8. hot melt adhesive production dimension control method according to claim 7, it is characterized in that it is with an automatic circulation device liquid medicine to be drenched to carry out the antistick processing on this hot melt adhesive tape, and with a cooling trough with the cooling of this hot melt adhesive tape, with a clipper this hot melt adhesive tape is cut again.
9. hot melt adhesive production dimension control method according to claim 1 is characterized in that wherein said thermosol formula raw material when mixing the melting stirring, and temperature range is controlled between about 120 ℃～170 ℃.
10. hot melt adhesive production dimension control method according to claim 1 is characterized in that more comprising with a defoaming device this hot melt adhesive tape is carried out de-bubble.
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| CN201010192737XA CN102260467A (en) | 2010-05-25 | 2010-05-25 | Method for controlling production size of hot melt adhesive |
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| CN201010192737XA CN102260467A (en) | 2010-05-25 | 2010-05-25 | Method for controlling production size of hot melt adhesive |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264659A (en) * | 2008-04-24 | 2008-09-17 | 曹永良 | Hot melt rubber stick extrusion machine |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101264659A (en) * | 2008-04-24 | 2008-09-17 | 曹永良 | Hot melt rubber stick extrusion machine |
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Application publication date: 20111130 |