CN105802530A - Manufacturing process for hot-melt textured adhesive tape - Google Patents
Manufacturing process for hot-melt textured adhesive tape Download PDFInfo
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- CN105802530A CN105802530A CN201510029078.0A CN201510029078A CN105802530A CN 105802530 A CN105802530 A CN 105802530A CN 201510029078 A CN201510029078 A CN 201510029078A CN 105802530 A CN105802530 A CN 105802530A
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- stricture
- sodium bicarbonate
- vagina paper
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Abstract
The invention relates to a manufacturing process for a hot-melt textured adhesive tape. The process comprises the following steps: by utilizing baking soda water as a medium, controlling space humidity through a humidity controller, allowing the adhesive-coating surface of textured paper to form a layer of a baking soda water contained thin film, then uniformly coating an adhesive on the surface of the textured paper containing the baking soda water contained thin film, decomposing the baking soda water into water and carbon dioxide under heating through a heating device, subjecting an adhesive layer to expansion at high temperature, and allowing carbon dioxide and vapor to penetrate through the adhesive layer and evaporate so as to obtain a porous foam-like adhesive layer. The manufacturing process provided by the invention improves thickness and initial adhesion of a hot-melt adhesive, reduces production cost, and does not cause environmental pollution.
Description
Technical field
The present invention relates to the processing technology of a kind of hot melt masking tape, particularly relate to one and utilize sodium bicarbonate water decomposes afterproduct, make glue-line form the processing technology of hot melt masking tape of similar foaming structure.
Background technology
U.S. stricture of vagina paper is a kind of high-tech decoration, spraying paper using (because of the property of its purposes, also known as a point ribbon paper), is widely used in interior decoration, the spraying paint and the spraying of high-grade limousine of household electrical appliance.Masking tape is with U.S. stricture of vagina paper and pressure-sensitive glue for primary raw material, coating pressure-sensitive adhesive, the web-like adhesive tape that another side is coated with adhesive and makes on U.S. stricture of vagina paper.Be mainly used in decorateing, spray paint, the application of baking vanish etc. is covered and the industry such as semiconductor element is fixing.Masking tape is because of the particularity of its use occasion, it is necessary to have the characteristics such as good, the high adhesion strength of chemical solvent high temperature resistant, anti-.
And hot melt masking tape is using U.S. stricture of vagina paper as substrate, coating hot-melt adhesive at a surface thereof.And in existing processing technology, it is possible to being processed by two ways, first firstly the need of PUR carries out foaming process, is then coated on U.S. stricture of vagina paper paper again.And in the process of foam process, it is necessary in glue, add solvent, environmental pollution can be caused.Being processed the PUR density obtained by foam process big, for solvent adhesive and the PUR of same consumption, the volume of hot melt solvent film is much smaller than hot melt film.Additionally due to the relative price cost of PUR is of a relatively high, therefore so that for make under existing process conditions produce the cost of hot melt masking tape also higher.Second, utilize humidity controller to control U.S. stricture of vagina paper and there is certain water content, be then coated with PUR, the adhesive tape that gluing is complete is heated, makes moisture evaporate, be that glue-line forms foaming structure, although the method saves cost, but the thickness low LCL of adhesive tape is thick, and the stickup of adhesive tape is strong not.
For drawbacks described above, it is badly in need of inventing a kind of brand-new processing technology and solves the deficiencies in the prior art.
Summary of the invention
It is an object of the invention to provide the processing technology of a kind of hot melt masking tape, to solve the problem that the stickup thick, adhesive tape of the thickness low LCL carrying out physical treatment hot melt masking tape of existence in prior art is strong not, easily cause environmental pollution.
The technical solution adopted for the present invention to solve the technical problems is:
The processing technology of a kind of hot melt masking tape, comprises the following steps:
A, employing dipping and the release U.S. stricture of vagina paper processed are as substrate, and control the water content in U.S. stricture of vagina paper 1%～9% by adjusting space humidity；
B, treat spraying sodium bicarbonate water on coated face to U.S. stricture of vagina paper, and make U.S. stricture of vagina paper treat coated face is formed one layer of sodium bicarbonate steam thin film by humidity controller；
C, control temperature at 100～220 DEG C, treat on coated face by what PUR was coated on the U.S. stricture of vagina paper containing sodium bicarbonate steam thin film in the way of extrusion, and the water content controlled in U.S. stricture of vagina paper by adjusting space humidity remains unchanged；
D, the U.S. stricture of vagina paper substrates that gluing is complete is heated, utilizes sodium bicarbonate preheating to hold labile principle, make the sodium bicarbonate water preheating between glue-line and U.S. stricture of vagina paper decomposite H2O and CO2, and make it evaporate together with the moisture in U.S. stricture of vagina paper, make glue-line form foaming structure, prepare described hot melt masking tape.
Preferably, the concentration of sodium bicarbonate water described in step b is 0.1%～1%.
Preferably, the mode of heating described in step d includes blowing high wind or using heating roller.
Preferably, in step d, the temperature of heating controls at 100～250 DEG C, and the duration of heat is 5～180s.
Preferably, the consumption of sodium bicarbonate water described in step b is 0.8～1.6g/m2.
Compared with prior art, the invention have the benefit that
The processing technology of hot melt masking tape provided by the invention is to utilize the U.S. stricture of vagina paper self can rewetting performance, U.S. stricture of vagina paper is kept self to contain the moisture content of certain content by physical method, then treat coated face to form one layer containing sodium bicarbonate steam thin film at U.S. stricture of vagina paper, then glue is coated uniformly on the U.S. stricture of vagina paper surface containing moisture, by the equipment heated, so that the medium and small soda water heat resolve Cheng Shui of heating process and carbon dioxide, high temperature is so that glue-line expands, make and carbon dioxide and water vapour evaporate through glue-line, the hot melt masking tape so prepared both had improve thickness and the sticking strength of adhesive layer, reduce production cost, and do not result in environmental pollution.
Detailed description of the invention
Being mainly composed of sodium bicarbonate in sodium bicarbonate water, chemical name is NaHCO3, this material is susceptible to chemical reaction afterwards being heated, and can decomposite H2O and CO2。
The present invention utilizes NaHCO just3This chemical characteristic, before gluing, it is ensured that in U.S. stricture of vagina paper under the premise of certain water content, treat coated face to spray sodium bicarbonate water to form one layer of sodium bicarbonate water thin film at U.S. stricture of vagina paper in advance.Complete Deng gluing, U.S. stricture of vagina paper is heated, in the process, NaHCO3Decompose H out2O and CO2And U.S.'s contained moisture of stricture of vagina paper self can pass through glue-line and evaporate, in the process of evaporation, gas can make glue-line bulk expansion, and glue layer can be formed and be similar to porous, expanded structure, and then prepares heretofore described hot melt masking tape.
For the marked improvement of the implementation process of the more detailed elaboration present invention and acquirement, it is further elaborated below in conjunction with specific embodiment and experimental technique data.
Embodiment one:
A, employing dipping and the release U.S. stricture of vagina paper processed are as substrate, and control the water content in U.S. stricture of vagina paper 1% by adjusting space humidity；
B, treating spraying sodium bicarbonate water on coated face to U.S. stricture of vagina paper, and make U.S. stricture of vagina paper treat to be formed on coated face one layer of sodium bicarbonate steam thin film by humidity controller, sodium bicarbonate water makes consumption be 0.8g/m2；
C, control temperature are at 100～220 DEG C, treat on coated face by what PUR was coated on the U.S. stricture of vagina paper containing sodium bicarbonate steam thin film in the way of extrusion, and controlling the water content in U.S. stricture of vagina paper 1% by adjusting space humidity, wherein sodium bicarbonate concentration of aqueous solution is 1%；
D, the U.S. stricture of vagina paper substrates that gluing is complete being heated 60s, temperature controls within 100～250 DEG C of scopes, utilizes sodium bicarbonate preheating to hold labile principle, makes the sodium bicarbonate water preheating between glue-line and U.S. stricture of vagina paper decomposite H2O and CO2, and make it evaporate together with the moisture in U.S. stricture of vagina paper, make glue-line form foaming structure, thus preparing hot melt masking tape.
Embodiment two:
A, employing dipping and the release U.S. stricture of vagina paper processed are as substrate, and control the water content in U.S. stricture of vagina paper 3.2% by adjusting space humidity；
B, treating spraying sodium bicarbonate water on coated face to U.S. stricture of vagina paper, and make U.S. stricture of vagina paper treat to be formed on coated face one layer of sodium bicarbonate steam thin film by humidity controller, sodium bicarbonate water makes consumption be 1.2g/m2；
C, control temperature are at 100～220 DEG C, treat on coated face by what PUR was coated on the U.S. stricture of vagina paper containing sodium bicarbonate steam thin film in the way of extrusion, and controlling the water content in U.S. stricture of vagina paper 3.2% by adjusting space humidity, wherein sodium bicarbonate concentration of aqueous solution is 0.65%；
D, the U.S. stricture of vagina paper substrates that gluing is complete being heated 80s, temperature controls within 100～250 DEG C of scopes, utilizes sodium bicarbonate preheating to hold labile principle, makes the sodium bicarbonate water preheating between glue-line and U.S. stricture of vagina paper decomposite H2O and CO2, and make it evaporate together with the moisture in U.S. stricture of vagina paper, make glue-line form foaming structure, thus preparing hot melt masking tape.
Embodiment three:
A, employing dipping and the release U.S. stricture of vagina paper processed are as substrate, and control the water content in U.S. stricture of vagina paper 7% by adjusting space humidity；
B, treating spraying sodium bicarbonate water on coated face to U.S. stricture of vagina paper, and make U.S. stricture of vagina paper treat to be formed on coated face one layer of sodium bicarbonate steam thin film by humidity controller, sodium bicarbonate water makes consumption be 1.2g/m2；
C, control temperature are at 100～220 DEG C, treat on coated face by what PUR was coated on the U.S. stricture of vagina paper containing sodium bicarbonate steam thin film in the way of extrusion, and controlling the water content in U.S. stricture of vagina paper 7% by adjusting space humidity, wherein sodium bicarbonate concentration of aqueous solution is 0.25%；
D, the U.S. stricture of vagina paper substrates that gluing is complete being heated 120s, temperature controls within 100～250 DEG C of scopes, utilizes sodium bicarbonate preheating to hold labile principle, makes the sodium bicarbonate water preheating between glue-line and U.S. stricture of vagina paper decomposite H2O and CO2, and make it evaporate together with the moisture in U.S. stricture of vagina paper, make glue-line form foaming structure, thus preparing hot melt masking tape.
Embodiment four:
A, employing dipping and the release U.S. stricture of vagina paper processed are as substrate, and control the water content in U.S. stricture of vagina paper 9% by adjusting space humidity；
B, treating spraying sodium bicarbonate water on coated face to U.S. stricture of vagina paper, and make U.S. stricture of vagina paper treat to be formed on coated face one layer of sodium bicarbonate steam thin film by humidity controller, sodium bicarbonate water makes consumption be 1.6g/m2；
C, control temperature are at 100～220 DEG C, treat on coated face by what PUR was coated on the U.S. stricture of vagina paper containing sodium bicarbonate steam thin film in the way of extrusion, and controlling the water content in U.S. stricture of vagina paper 9% by adjusting space humidity, wherein sodium bicarbonate concentration of aqueous solution is 0.1%；
D, the U.S. stricture of vagina paper substrates that gluing is complete being heated 180s, temperature controls within 100～250 DEG C of scopes, utilizes sodium bicarbonate preheating to hold labile principle, makes the sodium bicarbonate water preheating between glue-line and U.S. stricture of vagina paper decomposite H2O and CO2, and make it evaporate together with the moisture in U.S. stricture of vagina paper, make glue-line form foaming structure, thus preparing hot melt masking tape.
nullIn the above-described embodiment，Adhesive layer similarly is have passed through similar foaming to process，But this similar foaming processes without any foaming agent，But using solution concentration is that the sodium bicarbonate water of 0.1%～1% is as medium，Make the water content control of U.S. stricture of vagina paper within the scope of certain 1%～9% by humidity controller，Then，By PUR to be coated in the way of extrusion on U.S. stricture of vagina paper in the temperature range that maintenance is certain，Then by the adhesive tape of gluing by blowing strong hot air or heating roller to its heating，High temperature makes adhesive layer expand，Making sodium bicarbonate decomposes is water vapour and carbon dioxide，Moisture in U.S. stricture of vagina paper is made to be evaporated to steam，Steam makes it evaporate away through glue-line together with the U.S. contained moisture of stricture of vagina paper self with carbon dioxide through glue-line，The process of evaporation can make glue-line expand，Thus obtaining a kind of porous to be similar to the glue-line of foaming，.The present invention had both saved foaming agent and foaming machine by this technological means, decreases production cost, decreases environmental pollution, increases the relay contact area of glue-line and base simultaneously, and what improve adhesive tape pastes performance.
Additionally, the substrate in the present invention is the U.S. stricture of vagina paper passing through dipping, release process, release the water vapour that can stop some of U.S. stricture of vagina paper, it can only be run away from the one side having glue-line and evaporates, and impregnate and mould release can be stoped to penetrate into coated face.So that the glue-line performance of the foaming structure formed in the heating process that adhesive tape is after gluing is more preferably, the water of sodium bicarbonate decomposes, carbon dioxide and water vapour diffuse through glue-line from air and run away so that glue-line forms the structure of foaming, and PUR at high temperature flows, glue and substrate is just made to form close joint.
The remarkable result that the present invention obtains is embodied below by concrete experiment.
This experiment adopts country GB/T4852-84 to measure hot melt masking tape initial bonding strength in the present invention.Method is as follows:
1, test principle
One steel ball is rolled across the adhesive tape adhesiveness face lain on hang plate.The maximum ball size that the adhesive faces of length can be clung according to the rules, evaluates its tack size.
2, test equipment
2.1 inclined-plane grounder devices
This device mainly by hang plate, put ball device, support, base and box of receiving etc. part form.
2.1.1 hang plate: overlay on composition hang plate on the steel plate of thick about 7mm with the glass plate of thickness about 2mm.A millimeter coordinate paper can be lining into, as laying sample, regulating the labelling of steel ball original position between two plates.
2.1.2 ball device is put: put the steel ball original position that ball device should be able to regulate on hang plate, during release steel ball, should without any additional force to ball.
2.1.3 support: support is used for supporting hang plate, and can within the scope of 0～60 ° the inclination angle of adjustable plate.
2.1.4 base: base should be able to regulate the level of also holding means.
2.1.5 receive box: the steel ball that box of receiving tumbles on bearing plate, its inwall is lined with soft material.
2.2 steel balls
The 33 kinds of steel balls being 32～1 inches with GCrl5 bearing steel manufacture, precision be not less than that GB308 77 " steel ball " specifies 0 grade, diameter, can as test steel ball.32 times of value layout balls number of its diameter made in Great Britain pressed by steel ball.One group of steel ball of ball continuous print should be used during test.Steel ball should leave in antirust oil.Have rusty stain, the steel ball of scar must be changed in time.
2.3 mylars
Employing meets JB1256 77 " 6020 mylar " thin film that thickness is 0.025mm specified.Its length is about 110mm, the about wide 20mm of width ratio sample.
2.4 abluents and Wiping material
2.4.1 abluent, abluent can adopt the solvent that chemical pure acetone, ethyl acetate, ethanol etc. are suitable.
2.4.2 Wiping material: adopt the soft fabrics such as absorbent carbasus as Wiping material.This kind of material should not contain the material dissolving in above-mentioned solvent.
3, test condition
3.1 test chamber temperature are 23 ± 2 DEG C, and relative humidity is 65 ± 5%.
3.2 prepare sample before, adhesive tape should remove packaging material, without overlapping under 3.1 conditions place more than 2h.
4, sample
Specimen width is 10-80mm, and length is about 250mm, after removing outermost layer 3-5 circle adhesive tape, with the velocity solution uncoiling shape adhesive tape of about 300mm/min, then with same speed, sheet-like article is thrown off its sealing coat, cuts a sample every about 200mm, take more than 4.When sample stretcher strain is bigger, it is allowed to have the storage period being not more than 3min so that it is restore.Hands or other objects contact sample testing section is not allowed during sampling.
5, testing procedure
5.1 preparations
5.1.1 inclined-plane grounder device is adjusted to horizontal level, except particular provisions, the inclination angle of hang plate is transferred to 30 °.
5.1.2 with the absorbent carbasus being moistened with abluent, clean the two sides of glass surface and mylar, then wipe clean with gauze.
5.1.3 will wipe the steel ball of antirust oil, and put into the container filling abluent and soak several minutes, after taking-up, wiping is repeatedly cleaned with the abluent of cleaning and gauze, then it is used further to clean gauze wiped clean, the steel ball after cleaning, applies the instrument grippings such as clean bamboo and wood, bone tweezers.
5.1.4 adhesive tape sample adhesive faces is up placed on hang plate.It is covered with mylar as helping the section of rolling in predetermined portion.Help the section of rolling should be smooth, the defect such as bubble-free, fold.Below the section of rolling 100mm is helped to range for test section.
5.1.5 sticking with glue band will help the section of rolling both sides and sample lower end to be fixed on hang plate.If desired, it is also possible to stick with glue band and fixed along test section both sides of the edge, sample is made entirely to fit onboard.
5.1.6 with tweezers steel ball being sandwiched puts in ball device, regulates the front and back position putting ball device, makes steel ball be centrally located at and help in the section of rolling start line, before official testing, one sample allows repeatedly to try to survey, but should regulate the right position putting ball device, makes the track that steel ball rolls across every time misaligned.When specimen width is more than 25mm, with region wide for sample central authorities 25mm for Validity Test region.
The 5.2 maximum steel balls of preliminary election
5.2.1 open gently and put ball device, observe whether the steel ball rolled down is stuck (stop moving and exceed more than 5s) in test section.From big to little, the steel ball taking different ball number is suitably tested, until finding the biggest ball steel ball that test section can cling.
5.2.2 take above-mentioned biggest ball steel ball and two balls of size of ball number linking with it, same sample is respectively once tested, to confirm the steel ball of biggest ball number.
5.3 official testings
Take 3 samples, respectively carry out a spin test with biggest ball steel ball.If certain sample can not cling this steel ball, ball number can be used instead and be only smaller than its steel ball and once test, if still can not cling, then must retest by 5.1.4-5.3.
6, test result
6.1 test results represent with steel ball ball number.
6.2 in the steel ball that 3 samples each cling, if 3 is all biggest ball steel ball, or two is biggest ball steel ball, and another ball number is only smaller than biggest ball number, then test result represents with biggest ball number；If one is biggest ball steel ball, and another two steel ball ball number is only smaller than biggest ball number, then test result represents with the steel ball ball number being only smaller than biggest ball number.
The initial bonding strength of the sample adhesive tape prepared in the hot melt masking tape and prior art that prepare in the present invention is tested by foaming agent and foaming machine, its test result such as table 1 by above method:
Table 1 initial bonding strength test result
Additionally, also carried out the thickness measuring of the sample adhesive tape prepared in hot melt masking tape that the present invention is prepared and prior art by foaming agent and foaming machine, test result is as shown in table 2.
Table 2 thickness measuring result
Can be seen that from the data of table 1 and table 2, the meansigma methods relatively prior art of 10 tests of the hot melt masking tape initial bonding strength that the present invention prepares is obviously improved, the hot melt U.S. stricture of vagina paper self-adhesive tape thickness prepared also is significantly improved, therefore, the hot melt masking tape that the present invention prepares both had improved initial bonding strength, too increase thickness, production cost has obvious reduction.
It is to be understood that, although this specification is been described by according to embodiment, but not each embodiment only comprises an independent technical scheme, this narrating mode of description is only for clarity sake, description should be made as a whole by those skilled in the art, technical scheme in each embodiment through appropriately combined, can also form other embodiments that it will be appreciated by those skilled in the art that.The a series of detailed description of those listed above is only for illustrating of the possible embodiments of the present invention; they also are not used to limit the scope of the invention, and all should be included within protection scope of the present invention without departing from the skill of the present invention Equivalent embodiments made of spirit or change.
Claims (5)
1. the processing technology of a hot melt masking tape, it is characterised in that: it specifically includes following steps:
A, employing dipping and the release U.S. stricture of vagina paper processed are as substrate, and control the water content in U.S. stricture of vagina paper 1%～9% by adjusting space humidity；
B, treat spraying sodium bicarbonate water on coated face to U.S. stricture of vagina paper, and make U.S. stricture of vagina paper treat coated face is formed one layer of sodium bicarbonate steam thin film by humidity controller；
C, control temperature at 100～220 DEG C, treat on coated face by what PUR was coated on the U.S. stricture of vagina paper containing sodium bicarbonate steam thin film in the way of extrusion, and the water content controlled in U.S. stricture of vagina paper by adjusting space humidity remains unchanged；
D, the U.S. stricture of vagina paper substrates that gluing is complete is heated, utilizes sodium bicarbonate preheating to hold labile principle, make the sodium bicarbonate water preheating between glue-line and U.S. stricture of vagina paper decomposite H2O and CO2, and make it evaporate together with the moisture in U.S. stricture of vagina paper, make glue-line form foaming structure, prepare described hot melt masking tape.
2. the processing technology of hot melt masking tape according to claim 1, it is characterised in that: the concentration of sodium bicarbonate water described in step b is 0.1%～1%.
3. the processing technology of hot melt masking tape according to claim 1, it is characterised in that: the mode of heating described in step cd includes being be heated in the way of blowing high wind or using heating roller.
4. the processing technology of hot melt masking tape according to claim 1, it is characterised in that: in step d, the temperature of heating controls at 100～250 DEG C, and the duration of heat is 5～180s.
5. the processing technology of hot melt masking tape according to claim 1, it is characterised in that: the consumption of sodium bicarbonate water described in step b is 0.8～1.6g/m2。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510029078.0A CN105802530B (en) | 2015-01-20 | 2015-01-20 | Manufacturing process of hot-melt textured adhesive tape |
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| CN201510029078.0A CN105802530B (en) | 2015-01-20 | 2015-01-20 | Manufacturing process of hot-melt textured adhesive tape |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107691995A (en) * | 2017-08-30 | 2018-02-16 | 芜湖姚舜禹食品有限公司 | A kind of manual rice and flour |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000013897A1 (en) * | 1998-09-09 | 2000-03-16 | Thermopal Dekorplatten Gmbh & Co. Kg | Laminate, method for the production and use thereof |
| CN103173158A (en) * | 2013-04-18 | 2013-06-26 | 上海晶华粘胶制品发展有限公司 | Manufacturing process of hot-melting textured adhesive tape |
| CN103666311A (en) * | 2012-09-26 | 2014-03-26 | 上海晶华粘胶制品发展有限公司 | Hot melt masking tape and production process thereof |
-
2015
- 2015-01-20 CN CN201510029078.0A patent/CN105802530B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000013897A1 (en) * | 1998-09-09 | 2000-03-16 | Thermopal Dekorplatten Gmbh & Co. Kg | Laminate, method for the production and use thereof |
| CN103666311A (en) * | 2012-09-26 | 2014-03-26 | 上海晶华粘胶制品发展有限公司 | Hot melt masking tape and production process thereof |
| CN103173158A (en) * | 2013-04-18 | 2013-06-26 | 上海晶华粘胶制品发展有限公司 | Manufacturing process of hot-melting textured adhesive tape |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107691995A (en) * | 2017-08-30 | 2018-02-16 | 芜湖姚舜禹食品有限公司 | A kind of manual rice and flour |
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| GR01 | Patent grant |