CN115785842A - Masking tape with hollow patterns for spraying and preparation method thereof - Google Patents
Masking tape with hollow patterns for spraying and preparation method thereof Download PDFInfo
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- CN115785842A CN115785842A CN202211494647.5A CN202211494647A CN115785842A CN 115785842 A CN115785842 A CN 115785842A CN 202211494647 A CN202211494647 A CN 202211494647A CN 115785842 A CN115785842 A CN 115785842A
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- sheet body
- adhesive tape
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- glue
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- 230000000873 masking effect Effects 0.000 title claims abstract description 41
- 238000005507 spraying Methods 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000002390 adhesive tape Substances 0.000 claims abstract description 78
- 238000000576 coating method Methods 0.000 claims abstract description 66
- 239000011248 coating agent Substances 0.000 claims abstract description 60
- 239000000758 substrate Substances 0.000 claims abstract description 57
- 239000000853 adhesive Substances 0.000 claims abstract description 37
- 230000001070 adhesive effect Effects 0.000 claims abstract description 37
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 23
- 229920005989 resin Polymers 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 22
- 239000004014 plasticizer Substances 0.000 claims abstract description 20
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 15
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000001035 drying Methods 0.000 claims abstract description 15
- 239000005011 phenolic resin Substances 0.000 claims abstract description 15
- 229920001568 phenolic resin Polymers 0.000 claims abstract description 15
- 150000003505 terpenes Chemical class 0.000 claims abstract description 15
- 235000007586 terpenes Nutrition 0.000 claims abstract description 15
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 14
- 239000010703 silicon Substances 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims description 107
- 239000000919 ceramic Substances 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 36
- 230000009471 action Effects 0.000 claims description 34
- 239000000084 colloidal system Substances 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 25
- 238000004026 adhesive bonding Methods 0.000 claims description 15
- 230000002829 reductive effect Effects 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 12
- 230000001680 brushing effect Effects 0.000 claims description 12
- 238000004806 packaging method and process Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 229920000570 polyether Polymers 0.000 claims description 10
- 230000005855 radiation Effects 0.000 claims description 10
- 238000013519 translation Methods 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 230000005684 electric field Effects 0.000 claims description 8
- 239000000741 silica gel Substances 0.000 claims description 8
- 229910002027 silica gel Inorganic materials 0.000 claims description 8
- 230000003068 static effect Effects 0.000 claims description 8
- 238000005485 electric heating Methods 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 238000003491 array Methods 0.000 claims description 4
- -1 polymethylsiloxane Polymers 0.000 claims description 4
- 150000003376 silicon Chemical class 0.000 claims description 4
- 230000000181 anti-adherent effect Effects 0.000 claims description 3
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 3
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 claims description 3
- 239000000194 fatty acid Substances 0.000 claims description 3
- 229930195729 fatty acid Natural products 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000036961 partial effect Effects 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000001179 sorption measurement Methods 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 2
- 239000000499 gel Substances 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 20
- 238000010891 electric arc Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 125000005591 trimellitate group Chemical group 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011863 silicon-based powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to the field of adhesive tapes, in particular to a masking adhesive tape with hollow patterns for spraying and a preparation method thereof, wherein the preparation method comprises the following steps: the adhesive is mainly prepared from the following components in parts by weight: 5 to 8 parts of acrylic resin, 35 to 55 parts of terpene resin, 3.5 to 5 parts of phenolic resin, 0.3 to 0.6 part of defoaming agent, 5 to 10 parts of silicon micropowder and 2 to 4 parts of plasticizer; taking the masking tape subjected to release treatment as a substrate, controlling the water content to be 2% -4%, coating the adhesive on one side of the substrate, placing the substrate in an oven at the temperature of 120-140 ℃, drying for 4-5min, and cutting to obtain the masking tape for spraying. The adhesive prepared by combining the acrylic resin, the terpene resin, the phenolic resin, the silicon micropowder, the plasticizer and the defoaming agent is used for preparing the masking tape, so that the masking tape has remarkable high-temperature resistance.
Description
Technical Field
The invention relates to the field of adhesive tapes, in particular to a preparation method and a preparation method of a masking adhesive tape with hollow patterns for spraying.
Background
The masking paper adhesive tape is a self-adhesive tape with resin-impregnated masking paper as a base material. Used for sealing and packaging. Masking during painting, coating and sandblasting. Fixing the electronic element and the lead; the high-temperature-resistant requirement of the masking tape for spraying is high, and the high-temperature-resistant characteristic of the masking tape is influenced to some extent by the masking tape with the hollowed-out patterns at present.
Disclosure of Invention
Technical problem to be solved
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a masking tape for spraying with a hollow pattern, which can improve the high temperature resistance of the masking tape for spraying;
correspondingly, the invention further provides a preparation method of the masking tape with the hollow pattern for spraying.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
in a first aspect, the invention provides a preparation method of a masking tape with a hollow pattern for spraying, which comprises the following steps:
s1, preparation of an adhesive:
the adhesive is mainly prepared from the following components in parts by weight: 5 to 8 parts of acrylic resin, 35 to 55 parts of terpene resin, 3.5 to 5 parts of phenolic resin, 0.3 to 0.6 part of defoaming agent, 5 to 10 parts of silicon micropowder and 2 to 4 parts of plasticizer;
s2, the release-treated textured paper is used as a substrate, the moisture content is controlled to be 2% -4%, and
coating the adhesive on one side of the substrate, placing the substrate in an oven at the temperature of 120-140 ℃, drying for 4-5 min, and cutting to obtain the masking tape for spraying.
Optionally, the adhesive comprises the following raw materials in parts by weight: 6 to 7 parts of acrylic resin, 40 to 50 parts of terpene resin, 4 to 4.5 parts of phenolic resin, 0.3 to 0.6 part of defoaming agent, 6 to 8 parts of silicon micropowder and 2.5 to 3.5 parts of plasticizer.
Optionally, the preparation of the adhesive comprises the following substeps:
s11, stirring and mixing the phenolic resin, the acrylic resin and the sulfoacid terpene resin uniformly at the temperature of 120-130 ℃;
s12, when the temperature is reduced to 45 to 55 ℃, adding silicon micropowder, raising the temperature of a plasticizer and an antifoaming agent to 70 to 80 ℃, mixing and reacting for 5 to 8min, and cooling to room temperature to prepare the adhesive.
Optionally, the plasticizer is at least one of epoxidized fatty acid alkyl ester, trimellitic ester, and dioctyl sebacate.
Optionally, the defoaming agent is at least one of polyether modified silicon, polyether and polymethylsiloxane.
Optionally, the coating process of S2 employs a coating and gluing device, which includes a table top, a tape guide-in roller disposed outside one end of the table top, a tape guide-out roller disposed outside the other end of the table top, and a coating mechanism disposed above the table top; the coating mechanism comprises a plurality of coating modules arrayed along the advancing direction of the adhesive tape substrate; the coating module comprises a vertically arranged glue cavity; the lower end part of the glue cavity is an open end and is of a necking structure; a middle sheet body is vertically arranged in the glue solution cavity; the middle sheet body comprises a rigid sheet body, a telescopic sheet body, a bendable sheet body and a brush colloid which are sequentially arranged from top to bottom; the bendable piece body part extends out of the lower end of the glue solution cavity downwards, and a gap is formed between the bendable piece body and the necking structures at the lower ends of the glue solution cavities on the front side and the rear side; the flexible sheet body comprises an elastic resin sheet, piezoelectric ceramic sheet arrays attached to two sides of the elastic resin sheet and a first packaging layer used for packaging the outer surface of the flexible sheet body; the surface of the first packaging layer is sprayed with a nano anti-adhesive material; when the piezoelectric ceramic chip arrays on the two sides extend under the action of an electric field, one piezoelectric ceramic chip array is shortened to drive the bendable chip body to bend; the rigid sheet body divides the glue solution cavity into a front cavity and a rear cavity; glue inlets are respectively arranged on the front panel and the rear panel of the glue solution cavity above the necking structures and are respectively communicated with the front cavity and the rear cavity; the panel is made of rigid plastic materials or wood, and electromagnets are fixedly attached to the outer surface of the panel respectively; the rigid sheet body is made of iron; a plurality of smooth guide arc rods which are identical in shape and parallel to each other are connected between the front panel and the rear panel of the rigid sheet body on the same horizontal plane; the guide arc rods respectively slide through the rigid sheet bodies; the guiding arc rod protrudes upwards in the middle, and the arc center of the guiding arc rod is positioned in the center of the lower end of the necking structure; the power on and off and the magnetic force of the electromagnet are controlled through a circuit so as to control the front and back translation and the translation speed of the rigid sheet body; the rigid sheet body always points to the arc center of the guide arc rod under the constraint of the guide arc rod in the translation process and deflects accordingly; the bending direction of the bendable sheet body is opposite to the deflection direction of the rigid sheet body; the telescopic sheet body is extended under the control of an electric field according to the deflection of the rigid sheet body and the bending condition of the bendable sheet body so as to keep the distance between the brush colloid and the adhesive tape substrate and the contact pressure stable; the telescopic sheet body comprises a plurality of piezoelectric ceramic blocks stacked along the length direction and capable of extending along the length direction, and a second packaging layer coated outside the telescopic sheet body.
Optionally, compressible silica gel or a sponge body is detachably fixed on the inner wall of the panel above the glue inlet respectively; the rigid sheet body is moved and is deflected to a larger angle to extrude the compressible silica gel or the cavernous body.
Optionally, the contact surface of the adhesive tape substrate and the adhesive tape guide-in roller is a surface to be coated; an arc-shaped discharge plate is arranged outside the adhesive tape guide-in roller, and a plurality of discharge cones are uniformly arranged on one surface of the arc-shaped discharge plate facing the adhesive tape guide-in roller; the arc discharge plate discharges electric charges to the surface of the adhesive tape guide roller so that the surface of the adhesive tape guide roller carries static charges.
Optionally, the contact surface of the adhesive tape substrate and the adhesive tape leading-out roller is the back surface of the rubberized surface; an arc-shaped primary drying plate is arranged outside the adhesive tape guide-out roller; the arc-shaped primary drying plate comprises an outer electric heating layer and an inner ceramic heat radiation layer; the ceramic heat radiation layer faces the gluing surface of the adhesive tape substrate.
The coating and gluing method adopting the coating and gluing device comprises the following steps:
(1) the adhesive tape substrate is led in by an adhesive tape lead-in roller, passes through the upper part of the table top and is led out by an adhesive tape lead-out roller; the arc discharge plate releases charges to the surface of the adhesive tape lead-in roller through the discharge cone, so that the surface of the adhesive tape lead-in roller carries static charges, and partial static charges are transferred to the substrate of the adhesive tape, so that the adsorption capacity of the adhesive tape to adhesive liquid is improved; initially, the middle sheet body is vertically positioned in the middle of the glue cavity, the magnetic forces of the electromagnets outside the front panel and the rear panel are the same, the rigid sheet body is positioned at the highest position in the middle of the guide arc rod, and the bottom of the brush glue body is just contacted with the upper surface of the adhesive tape base; the distance between the bendable sheet body and the front and rear side necking structures is the same; a certain amount of glue solution is respectively injected into the front cavity and the rear cavity through the glue inlet, and the gaps between the bent sheet body and the front and rear side necking structures just ensure that the glue solution in the glue solution cavity cannot flow out of the gaps downwards under the action of self tension and viscous force;
(2) the magnetic force of the electromagnet of the rear panel is controlled, and the magnetic force of the electromagnet of the front panel is reduced or disconnected; under the action of magnetic attraction, the rigid sheet body moves to one side of the rear panel, and in the moving process, because the rigid sheet body has a certain thickness and an arc-shaped structure of the guide arc rod, the lower end of the rigid sheet body always deflects towards the arc center of the guide arc rod, which is equivalent to that the middle sheet body rotates around the middle part of the lower end of the necking structure, the middle sheet body cannot be limited by the necking structure to rotate; in the later period of the deflection stroke of the middle sheet body, the rigid sheet body extrudes the compressible silica gel or the sponge body behind the rigid sheet body, the piezoelectric ceramic sheet array on the front side in the bendable sheet body is shortened, and the piezoelectric ceramic sheet array on the rear side is extended, so that the bendable sheet body is driven to bend forwards; in the process that the middle sheet body deflects backwards, the volume of the back cavity is reduced, the glue solution in the middle sheet body is extruded, the bendable sheet body is bent forwards, the gap between the bendable sheet body and the rear necking structure of the bendable sheet body is increased, the glue solution is extruded out from the gap between the bendable sheet body and the rear necking structure of the bendable sheet body through extrusion, and the bendable sheet body is bent forwards at the moment, so that one surface of the bendable sheet body facing backwards is a convex arc surface, and the glue solution flows downwards along the convex arc surface to the convex arc surface behind the glue brushing body under the action of the coanda effect; a certain amount of glue solution is extruded into the front cavity through the glue inlet in the process;
(3) the magnetic force of the electromagnet of the front panel is controlled, and the magnetic force of the electromagnet of the rear panel is reduced or disconnected; under the action of magnetic attraction, the rigid sheet body moves towards one side of the front panel, the upper part of the middle sheet body deflects towards the front, and the brush colloid body at the lower part deflects towards the rear; so that the brush colloid is horizontally swept backwards through the back of the brush colloid in a forward bending state to be coated with the glue solution; when the middle sheet body swings to the limit, the piezoelectric ceramic sheet array on the front side in the bendable sheet body is controlled to extend, and the piezoelectric ceramic sheet array on the rear side is controlled to shorten, so that the bendable sheet body is driven to bend backwards; in the process that the middle sheet body deflects forwards, the volume of the front cavity is reduced, the glue solution in the front cavity is extruded, when the bendable sheet body is converted into backward bending, the gap between the bendable sheet body and the front necking structure of the bendable sheet body is increased, the glue solution is extruded from the gap between the bendable sheet body and the front necking structure of the bendable sheet body through extrusion, and the bendable sheet body is bent backwards at the moment, so that the surface facing forwards is a convex arc surface, and the glue solution flows downwards along the convex arc surface to the front convex arc surface of the glue body under the action of the coanda effect; in the process, a certain amount of glue solution is extruded into the rear cavity through the glue inlet;
(4) repeating the processes of the steps (2) and (3);
(5) when the brushed adhesive tape substrate is led out by the adhesive tape lead-out roller, the adhesive tape substrate is preliminarily dried by the ceramic heat radiation layer which is heated by the electric heating layer and radiates infrared rays outwards so as to reduce the fluidity of the adhesive solution
In a second aspect, the invention further provides a masking tape with a hollow pattern for spraying, which is prepared by the preparation method in any one of the above aspects.
(III) advantageous effects
The beneficial effects of the invention are:
1. according to the preparation process of the masking tape with the hollow pattern for spraying, disclosed by the invention, the masking tape is prepared by using the adhesive prepared by combining the acrylic resin, the terpene resin, the phenolic resin, the silicon micropowder, the plasticizer and the defoaming agent, so that the masking tape is endowed with remarkable high-temperature resistance.
When the defoaming agent is at least one of polyether modified silicon, polyether and polymethylsiloxane, the defoaming effect is achieved, and the high-temperature resistance of the defoaming agent can be improved. Note that this effect is not exhibited by all defoaming agents, and the high-temperature characteristics are not improved by defoaming.
1. The coating process of the invention adopts a coating and gluing device, the existing coating roller essentially leads glue to be adhered on a tape substrate through extrusion contact, the contact time of the coating roller and the tape substrate is very short and is point contact, so the coating roller has no coating action, and the stable coating work can be realized only by having complex requirements on the viscosity and the fluidity of the glue, the material of the tape substrate and the material and the structure of the coating roller. This application simulation is made a round trip to brush the action, and the contact time that makes glue solution and sticky tape is longer, and area of contact is bigger, and initiative flow shakeouts makes the glue solution adhere to more evenly, and thickness is also more even, and the tiny bubble of sneaking is easy to be broken exhaust air etc. can accomplish the coating process of even efficient more, and because the simulation is to paint the action, and the direct adhesion action of the glue solution that does not have now, consequently low to the requirement of glue solution, can be suitable for the coating work of the glue solution of different components.
2. The coating and gluing device adopts the coating modules to carry out array arrangement, on one hand, the coating modules can be simply increased and decreased according to the requirement of coating speed, the coating modules are mutually independent, the purchase, the installation and the maintenance are very convenient, and the gradual progress of the fineness and the fineness of the coating can be realized by adopting different fineness structures and materials for brush glue bodies of different coating modules, so that the brush coating speed and the coating quality are further improved; the coating module utilizes the front and back deflection of the middle sheet body to realize the front and back swing of the glue brushing body on the one hand, realizes the extrusion of glue solution and the glue supplement on the glue brushing body by matching with the volume change of the front cavity and the back cavity by the swing action on the other hand, and can ensure that the middle sheet body is not interfered by the necking structure in the deflection swing process because the deflection circle center of the middle sheet body is positioned at the center of the lower end of the necking structure on the other hand, so that the deflection swing action of the middle sheet body can be utilized, the flow limiting action of the necking structure on the glue solution can be utilized, the synchronous control on the pressure of the glue solution in different cavities can be realized, the contradiction between the action and the structure of the middle sheet body and the middle sheet body can be ingeniously overcome, and the cooperation of a plurality of actions can be realized; the distance between the brush colloid and the adhesive tape substrate and the extrusion force are ensured by supplementing the telescopic sheet body with the accurately controllable telescopic characteristic of the piezoelectric ceramic block under the action of an electric field and balancing the change of the distance between the brush colloid and the adhesive tape substrate in the deflection swinging process, so that the contradiction between the deflection swinging action of the brush colloid and the continuous brushing colloid requirement is overcome; the bending of the bendable sheet body is realized through the accurately controllable telescopic characteristic of the piezoelectric ceramic chip array under the action of an electric field, on one hand, the angle change of the brush colloid is driven, so that one surface of the brush colloid is in contact with the adhesive tape substrate for coating, the brush colloid is enabled to coat the adhesive tape substrate at a certain inclination angle, the contact area of the brush colloid and the adhesive tape substrate is increased, and the angle requirement in the coating process is met; on one hand, the gap between the bendable sheet body and the necking structure on one side is increased, and the glue solution which is pressurized by moving the middle sheet body is just on the side, so that the glue solution is extruded out from the gap between the bendable sheet body and the necking structure on the side through extrusion, and at the moment, the bendable sheet body is bent towards the opposite side, so that one side of the bendable sheet body facing the extrusion position is a convex arc surface, the glue solution can smoothly flow downwards along the convex arc surface to the convex arc surface after being brushed with the glue body under the action of the Kangda effect, and the glue solution is supplemented for the next brushing surface; the device simple structure, control is accurate simple and convenient, formulates and sets up the action parameter according to concrete needs easily, and design benefit can realize a plurality of profitable action effects simultaneously at simple action in-process to high-efficient high-quality realization coating process.
Drawings
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a schematic view of the coating and gluing apparatus of the present invention in step (1);
FIG. 3 is a schematic view of the coating and gluing device of the present invention in step (2);
FIG. 4 is a schematic structural view of the coating and sizing device of the present invention in step (3);
FIG. 5 is a schematic view of a coating module according to the present invention;
fig. 6 is an enlarged schematic view of the circle in fig. 3.
In the figure: 1. a table top; 2. a tape guide-in roller; 21. an arc discharge plate; 22. a discharge cone; 3. a tape take-off roller; 31. an arc-shaped primary drying plate; 32. an electric heating layer; 33. a ceramic heat radiation layer; 4. a coating mechanism; 5. a coating module; 51. a glue cavity; 511. a front cavity; 512. a rear cavity; 513. a panel; 514. a glue inlet; 515. a necking structure; 52. a bendable sheet body; 521. an elastic resin sheet; 522. a piezoelectric ceramic wafer array; 523. a first encapsulation layer; 53. brushing colloid; 55. a rigid sheet; 56. an electromagnet; 57. a guide arc bar; 58. a retractable sheet body; 581. a piezoelectric ceramic block; 582. a second encapsulation layer; 59. compressible silica gel or sponge; 6. an adhesive tape base.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention by way of specific embodiments thereof.
With reference to figure 1 of the drawings,
example 1
The embodiment provides a preparation method of a masking tape with a hollow pattern for spraying, which comprises the following steps:
s1, preparation of an adhesive:
the adhesive is mainly prepared from the following components in parts by weight: 7 parts of acrylic resin, 45 parts of terpene resin, 4 parts of phenolic resin, 0.5 part of defoaming agent, 7 parts of silicon micropowder and 3 parts of plasticizer; the plasticizer is a composition of epoxidized fatty acid alkyl ester and trimellitate in a mass ratio of 1: 1; the defoaming agent is a composition of polyether modified silicon and polyether in a mass ratio of 1: 1;
s11, uniformly stirring and mixing the phenolic resin, the acrylic resin and the sulfoacid terpene resin at the temperature of 125 ℃;
s12, when the temperature is reduced to 50 ℃, adding silicon micropowder, mixing and reacting plasticizer and defoamer at the temperature of 75 ℃ for 7min, and cooling to room temperature to obtain the adhesive;
s2, taking the textured paper subjected to release treatment as a substrate, controlling the moisture content to be 3 percent
Coating the adhesive on one side of the substrate, placing the substrate in an oven at 130 ℃, drying for 4min, and cutting to obtain the masking tape for spraying.
Example 2
The embodiment provides a preparation method of a masking tape with a hollow pattern for spraying, which comprises the following steps:
s1, preparation of an adhesive:
the adhesive is mainly prepared from the following components in parts by weight: 8 parts of acrylic resin, 35 parts of terpene resin, 5 parts of phenolic resin, 0.3 part of defoaming agent, 10 parts of silicon micropowder and 2 parts of plasticizer; the plasticizer is dioctyl sebacate. The defoaming agent is a combination of polyether and polymethyl siloxane according to the mass ratio of 2: 3;
s11, stirring and mixing the phenolic resin, the acrylic resin and the sulfoacid terpene resin uniformly at the temperature of 130 ℃;
s12, when the temperature is reduced to 45 ℃, adding the silicon powder, the plasticizer and the defoaming agent, raising the temperature to 80 ℃, mixing and reacting for 5min, and cooling to room temperature to obtain the adhesive.
S2, taking the textured paper subjected to release treatment as a substrate, controlling the moisture content to be 4 percent
Coating the adhesive on one side of the substrate, placing the substrate in an oven at 120 ℃, drying for 5min, and cutting to obtain the masking tape for spraying.
Example 3
The embodiment provides a preparation method of a masking tape with a hollow pattern for spraying, which comprises the following steps:
s1, preparation of an adhesive:
the adhesive is mainly prepared from the following components in parts by weight: 5 parts of acrylic resin, 55 parts of terpene resin, 3.5 parts of phenolic resin, 0.6 part of defoaming agent, 5 parts of silicon micropowder and 4 parts of plasticizer; the plasticizer is trimellitate. The defoaming agent is a combination of polyether and polymethylsiloxane according to the weight ratio of 1: 3;
s11, uniformly stirring and mixing the phenolic resin, the acrylic resin and the sulfoacid terpene resin at the temperature of 120 ℃;
s12, when the temperature is reduced to 55 ℃, adding silicon micro powder, heating the plasticizer and the defoaming agent to 70 ℃, mixing and reacting for 8min, and cooling to room temperature to obtain the adhesive.
S2, taking the textured paper subjected to release treatment as a substrate, controlling the moisture content to be 2 percent
Coating the adhesive on one side of the substrate, placing the substrate in a drying oven at 140 ℃, drying for 4min, and cutting to obtain the masking tape for spraying.
The masking tapes obtained in examples 1 to 3 were tested at 150 ℃ for 60min, and both hot glass and cold peeling were normal, and after peeling, no residual glue remained and no adhesive layer was damaged.
In examples 1-3, significant adhesive residue was observed when the textured tape without the anti-foaming agent was tested at 150 ℃ for 60 min.
Referring to fig. 2 to 6, in examples 1 to 3, the conventional coating roller essentially adheres the glue to the tape substrate by pressing contact, the contact time between the coating roller and the tape substrate is very short, and is point contact, so that there is substantially no coating action, and stable coating work can be achieved only by having complicated requirements on the viscosity and fluidity of the glue, the material of the tape substrate, and the material and structure of the coating roller. For this purpose, further, the coating of the application S2 adopts a coating and gluing device, which includes a table top 1, a tape guide-in roller 2 disposed outside one end of the table top 1, a tape guide-out roller 3 disposed outside the other end of the table top 1, and a coating mechanism 4 disposed above the table top 1; the coating mechanism 4 includes a plurality of coating modules 5 arrayed along the advancing direction of the tape substrate 6; the coating module 5 comprises a vertically arranged glue solution cavity 51; the lower end part of the glue solution cavity 51 is an open end and is of a necking structure 515; a middle sheet body is vertically arranged in the glue solution cavity 51; the middle sheet body comprises a rigid sheet body 55, a telescopic sheet body 58, a bendable sheet body 52 and a brush colloid 53 which are arranged in sequence from top to bottom; the part of the flexible sheet body 52 extends out of the lower end of the glue solution cavity 51, and a gap is formed between the flexible sheet body 52 and the necking structures 515 at the lower ends of the glue solution cavities 51 at the front side and the rear side; the bendable sheet body 52 comprises an elastic resin sheet 521, a piezoelectric ceramic sheet array 522 attached to two sides of the elastic resin sheet 521, and a first packaging layer 523 for packaging the outer surface of the bendable sheet body 52; the surface of the first packaging layer 523 is sprayed with a nano anti-adhesive material; the piezoelectric ceramic chip arrays 522 on the two sides are stretched under the action of the electric field, and one is shortened to drive the bendable chip body 52 to bend; the rigid sheet 55 divides the glue chamber 51 into a front chamber 511 and a rear chamber 512; glue inlets 514 are respectively arranged above the necking structures 515 on the panels 513 at the front side and the rear side of the glue liquid cavity 51 and are respectively communicated with the front cavity 511 and the rear cavity 512; the panel 513 is made of rigid plastic or wood, and the electromagnets 56 are fixedly attached to the outer surface of the panel 511 respectively; the rigid sheet 55 is iron; a plurality of smooth guide arc rods 57 which are identical in shape and parallel to each other are connected on the same horizontal plane between the panels 513 on the front side and the rear side of the rigid sheet body 55; the guide arc bars 57 respectively slide through the rigid sheet bodies 55; the guiding arc rod 57 protrudes upwards, and the arc center of the guiding arc rod is positioned at the center of the lower end of the necking structure 515; the power on and off and the magnetic force of the electromagnet 56 are controlled by a circuit so as to control the front and back translation and the translation speed of the rigid sheet body 55; during the translation, the rigid plate 55 always points to the arc center of the guiding arc rod 57 under the constraint of the guiding arc rod 57 and thus deflects; the bending direction of flexible blade 52 is opposite to the deflection direction of rigid blade 55; the stretchable sheet body 58 is stretched by electric field control according to the deflection of the rigid sheet body 55 and the bending condition of the bendable sheet body 52 to keep the distance and the contact pressure of the brush colloid 53 and the tape substrate 6 stable; the stretchable sheet 58 includes a plurality of piezoelectric ceramic blocks 581 stacked along a length direction thereof and stretchable in the length direction, and a second encapsulation layer 582 covering the stretchable sheet 58.
Furthermore, compressible silica gel or sponge 59 is detachably fixed on the inner wall of the panel 513 above the gel inlet 514; the rigid blade 55 moves to deflect to a greater angle to compress the compressible silicone or sponge 59.
Further, the contact surface of the adhesive tape substrate 6 and the adhesive tape guide-in roller 2 is a surface to be coated with adhesive; an arc-shaped discharge plate 21 is arranged outside the adhesive tape guide-in roller 2, and a plurality of discharge cones 22 are uniformly arranged on one surface, facing the adhesive tape guide-in roller 2, of the arc-shaped discharge plate 21; the arc-shaped discharge plate 21 discharges electric charges to the surface of the tape introducing roller 2 to make the surface of the tape introducing roller 2 carry electrostatic charges.
Further, the contact surface of the adhesive tape substrate 6 and the adhesive tape leading-out roller 3 is the back surface of the gluing surface; an arc-shaped primary drying plate 31 is arranged outside the adhesive tape guide-out roller 3; the arc-shaped primary drying plate 31 comprises an outer electric heating layer 32 and an inner ceramic heat radiation layer 33; the ceramic heat radiation layer 33 faces the coated face of the tape base 6.
Further, the coating and sizing method comprises the following steps:
(1) the adhesive tape substrate 6 is led in by the adhesive tape lead-in roller 2, passes through the upper part of the table board 1 and is led out by the adhesive tape lead-out roller 3; the arc-shaped discharge plate 21 releases charges to the surface of the adhesive tape guide-in roller 2 through the discharge cone 22, so that the surface of the adhesive tape guide-in roller 2 carries static charges, and partial static charges are transferred to the adhesive tape substrate 6, so that the adsorption capacity of the adhesive tape substrate to adhesive liquid is improved; initially, the middle sheet body is vertically positioned in the middle of the glue solution cavity 51, at this time, the magnetic forces of the electromagnets 56 outside the front panel 513 and the rear panel 513 are the same, the rigid sheet body 55 is positioned at the highest position in the middle of the guide arc rod 57, and the bottom of the glue brushing body 53 just contacts with the upper surface of the adhesive tape substrate 6; the spacing between the flexible sheet body 52 and the front and rear necking structures 515 is the same; a certain amount of glue solution is respectively injected into the front cavity 511 and the rear cavity 512 through the glue inlet 514, and the clearance between the bent sheet body 52 and the front and rear side necking structures 515 just ensures that the glue solution in the glue solution cavity 51 cannot flow out of the clearance downwards under the action of self tension and viscous force;
(2) the magnetic force of the electromagnet 56 of the back panel 513 is controlled, and the magnetic force of the electromagnet 56 of the front panel 513 is reduced or disconnected; under the action of magnetic attraction, the rigid sheet body 55 moves towards one side of the rear panel 513, and in the moving process, because the rigid sheet body 55 has a certain thickness and an arc-shaped structure of the guide arc rod 57, the lower end of the rigid sheet body 55 always deflects towards the arc center of the guide arc rod 57, which is equivalent to that the middle sheet body rotates around the middle part of the lower end of the necking structure 515, so that the middle sheet body cannot be limited by the necking structure 515 to rotate; at the later stage of the deflection stroke of the middle sheet body, the rigid sheet body 55 extrudes the compressible silica gel or the sponge body 59 behind the rigid sheet body, one piezoelectric ceramic sheet array 522 facing the front side in the flexible sheet body 52 shortens, and one piezoelectric ceramic sheet array 522 facing the rear side extends, so that the flexible sheet body 52 is driven to bend forwards; in the process that the middle sheet body deflects backwards, the volume of the rear cavity 512 is reduced, the glue solution in the rear cavity is squeezed, and the flexible sheet body 52 bends forwards to enlarge the gap between the flexible sheet body 52 and the rear necking structure 515, the glue solution is squeezed out from the gap between the flexible sheet body 52 and the rear necking structure 515 through squeezing, and at the moment, the flexible sheet body 52 bends forwards, so that the surface facing the rear direction is a convex arc surface, and the glue solution flows downwards along the convex arc surface to the convex arc surface behind the glue brushing body 53 under the action of the coanda effect; a certain amount of glue solution is extruded into the front cavity 511 through the glue inlet 514 in the process;
(3) the magnetic force of the electromagnet 56 of the front panel 513 is controlled to reduce or disconnect the magnetic force of the electromagnet 56 of the rear panel 513; under the action of magnetic attraction, the rigid sheet body 55 moves towards the front panel 513, the upper part of the middle sheet body deflects forwards, the brush colloid 53 at the lower part deflects backwards, and in the moving process, as the distance between the brush colloid 53 and the adhesive tape base 6 is increased from large to small, the telescopic sheet body 58 is controlled to be gradually shortened to the initial length and then gradually extended, so as to balance the change of the distance between the brush colloid 53 and the adhesive tape base 6, and keep the distance between the brush colloid 53 and the adhesive tape base 6 and the extrusion force stable; so that the glue solution is applied by sweeping the brush colloid 53 backwards through the back thereof in a state of being bent forwards; when the swing of the middle sheet body is fast to the limit, controlling the piezoelectric ceramic sheet array 522 towards the front to extend and the piezoelectric ceramic sheet array 522 towards the rear to shorten in the bendable sheet body 52, so as to drive the bendable sheet body 52 to bend backwards; in the process that the middle sheet body deflects forwards, the volume of the front cavity 511 is reduced, glue liquid in the front cavity is extruded, when the bendable sheet body 52 is converted into backward bending, the gap between the bendable sheet body 52 and the front necking structure 515 is increased, the glue liquid is extruded out through the gap between the bendable sheet body 52 and the front necking structure 515, and at the moment, the bendable sheet body 52 bends backwards, so that the forward side of the glue liquid is a convex arc surface, and the glue liquid flows downwards along the convex arc surface to the front convex arc surface of the glue brushing body 53 under the action of the coanda effect; in the process, a certain amount of glue solution is extruded into the rear cavity 512 through the glue inlet 514;
(4) repeating the processes of the steps (2) and (3);
(5) when the coated adhesive tape substrate 6 is led out by the adhesive tape lead-out roller 3, the ceramic heat radiation layer 33 which is heated by the electric heating layer 32 and radiates infrared rays outwards is primarily dried to reduce the fluidity of the adhesive solution.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A preparation method of a masking tape with a hollow pattern for spraying is characterized in that,
which comprises the following steps:
s1, preparation of an adhesive:
the adhesive is mainly prepared from the following components in parts by weight: 5 to 8 parts of acrylic resin, 35 to 55 parts of terpene resin, 3.5 to 5 parts of phenolic resin, 0.3 to 0.6 part of defoaming agent, 5 to 10 parts of silicon micropowder and 2 to 4 parts of plasticizer;
s2, the release-treated textured paper is used as a substrate, the moisture content is controlled to be 2% -4%, and
coating the adhesive on one side of the substrate, placing the substrate in an oven at the temperature of 120-140 ℃, drying for 4-5min, and cutting to obtain the masking tape for spraying.
2. The preparation method of the masking tape with the hollowed-out pattern for spraying according to claim 1, wherein the adhesive comprises the following raw materials in parts by weight: 6 to 7 parts of acrylic resin, 40 to 50 parts of terpene resin, 4 to 4.5 parts of phenolic resin, 0.3 to 0.6 part of defoaming agent, 6 to 8 parts of silicon micropowder and 2.5 to 3.5 parts of plasticizer.
3. The method for preparing the masking tape with the hollowed-out pattern for spraying according to claim 1, wherein the preparation of the adhesive comprises the following substeps:
s11, stirring and mixing the phenolic resin, the acrylic resin and the sulfoacid terpene resin uniformly at the temperature of 120-130 ℃;
and S12, when the temperature is reduced to 45-55 ℃, adding silicon micro powder, raising the temperature of a plasticizer and a defoaming agent to 70-80 ℃, mixing and reacting for 5-8 min, and cooling to room temperature to obtain the adhesive.
4. The method for preparing the masking tape with hollow pattern for spraying of claim 3, wherein the method comprises the following steps: the plasticizer is at least one of epoxidized fatty acid alkyl ester, trimellitic ester and dioctyl sebacate.
5. The method for preparing the masking tape with hollow pattern for spraying according to claim 3, wherein: the defoaming agent is at least one of polyether modified silicon, polyether and polymethylsiloxane.
6. The method for preparing the masking tape with hollow-out patterns for spraying according to claim 1, wherein the coating process of S2 adopts a coating and gluing device, and the coating and gluing device comprises a table top (1), a tape guide-in roller (2) arranged outside one end of the table top (1), a tape guide-out roller (3) arranged outside the other end of the table top (1) and a coating mechanism (4) arranged above the table top (1); the coating mechanism (4) comprises a plurality of coating modules (5) arrayed along the advancing direction of the adhesive tape substrate (6); the coating module (5) comprises a glue solution cavity (51) which is vertically arranged; the lower end part of the glue liquid cavity (51) is an open end and is of a necking structure (515); a middle sheet body is vertically arranged in the glue cavity (51); the middle sheet body comprises a rigid sheet body (55), a telescopic sheet body (58), a bendable sheet body (52) and a brush colloid body (53) which are arranged from top to bottom in sequence; the part of the flexible sheet body (52) extends downwards out of the lower end of the glue solution cavity (51), and a gap is formed between the flexible sheet body (52) and necking structures (515) at the lower ends of the glue solution cavities (51) on the front side and the rear side; the bendable sheet body (52) comprises an elastic resin sheet (521), a piezoelectric ceramic sheet array (522) attached to two sides of the elastic resin sheet (521), and a first packaging layer (523) used for packaging the outer surface of the bendable sheet body (52); the surface of the first packaging layer (523) is sprayed with a nano anti-adhesive material; the piezoelectric ceramic chip arrays (522) on the two sides are stretched under the action of an electric field, and one is shortened to drive the bendable chip body (52) to bend; the rigid sheet body (55) divides the glue cavity (51) into a front cavity (511) and a rear cavity (512); glue inlets (514) are respectively formed in the front panel (513) and the rear panel (513) of the glue liquid cavity (51) above the necking structures (515) and are respectively communicated with the front cavity (511) and the rear cavity (512); the panel (513) is made of rigid plastic materials or wood, and electromagnets (56) are respectively fixedly attached to the outer surface of the panel (511); the rigid sheet body (55) is made of iron; a plurality of smooth guide arc rods (57) which are identical in shape and parallel to each other are connected between the front and rear panels (513) of the rigid sheet body (55) on the same horizontal plane; the guide arc rods (57) respectively slide through the rigid sheet bodies (55); the guiding arc rod (57) protrudes upwards from the middle part, and the arc center of the guiding arc rod is positioned at the center of the lower end of the necking structure (515); the power on and off and the magnetic force of the electromagnet (56) are controlled through a circuit so as to control the front and back translation and the translation speed of the rigid sheet body (55); the rigid sheet body (55) always points to the arc center of the guide arc rod (57) under the constraint of the guide arc rod (57) in the translation process and deflects accordingly; the bending direction of the bendable sheet (52) is opposite to the deflection direction of the rigid sheet (55); the telescopic sheet body (58) is extended under the control of an electric field according to the deflection of the rigid sheet body (55) and the bending condition of the bendable sheet body (52) so as to keep the distance between the brush colloid (53) and the adhesive tape substrate (6) and the contact pressure stable; the telescopic sheet body (58) comprises a plurality of piezoelectric ceramic blocks (581) which are stacked along the length direction and can be extended along the length direction, and a second packaging layer (582) which is coated outside the telescopic sheet body (58).
7. The preparation method of the masking tape with hollow patterns for spraying of claim 6, wherein the compressible silica gel or sponge (59) is detachably fixed on the inner wall of the panel (513) above the gel inlet (514); the rigid sheet (55) compresses the compressible silicone or sponge (59) when it is displaced to a greater angle.
8. The method for preparing the masking tape with hollow patterns for spraying according to claim 7, wherein the contact surface of the tape substrate (6) and the tape guide-in roller (2) is the surface to be coated; an arc-shaped discharge plate (21) is arranged outside the adhesive tape guide-in roller (2), and a plurality of discharge cones (22) are uniformly arranged on one surface, facing the adhesive tape guide-in roller (2), of the arc-shaped discharge plate (21); the arc-shaped discharge plate (21) releases electric charges to the surface of the adhesive tape guide-in roller (2) so that the surface of the adhesive tape guide-in roller (2) carries static charges; the contact surface of the adhesive tape substrate (6) and the adhesive tape guide-out roller (3) is the back surface of the adhesive coating surface; an arc-shaped primary drying plate (31) is arranged outside the adhesive tape guide-out roller (3); the arc-shaped primary drying plate (31) comprises an outer electric heating layer (32) and an inner ceramic heat radiation layer (33); the ceramic heat radiation layer (33) faces the gluing surface of the adhesive tape substrate (6).
9. The method for preparing the masking tape with hollow pattern for spraying according to claim 8, wherein the coating and gluing method using the coating and gluing device comprises the following steps:
(1) the adhesive tape substrate (6) is led in by the adhesive tape lead-in roller (2), passes through the upper part of the table top (1) and is led out by the adhesive tape lead-out roller (3); the arc-shaped discharge plate (21) releases charges to the surface of the adhesive tape guide-in roller (2) through the discharge cone (22) so that the surface of the adhesive tape guide-in roller (2) carries static charges, and partial static charges are transferred to the adhesive tape substrate (6) to increase the adsorption capacity of the adhesive tape substrate to adhesive liquid; initially, the middle sheet body is vertically positioned in the middle of the glue cavity (51), the magnetic force of the electromagnets (56) outside the front panel and the rear panel (513) is the same, the rigid sheet body (55) is positioned at the highest position in the middle of the guide arc rod (57), and the bottom of the glue brushing body (53) is just contacted with the upper surface of the adhesive tape substrate (6); the distance between the flexible sheet body (52) and the front and rear side necking structures (515) is the same; a certain amount of glue solution is respectively injected into the front cavity (511) and the rear cavity (512) through the glue inlet (514), and the clearance between the bent sheet body (52) and the front and rear side necking structures (515) just ensures that the glue solution in the glue solution cavity (51) cannot flow out of the clearance downwards under the action of self tension and viscous force;
(2) the magnetic force of the electromagnet (56) of the rear panel (513) is controlled to reduce or disconnect the magnetic force of the electromagnet (56) of the front panel (513); under the action of magnetic attraction, the rigid sheet body (55) moves towards one side of the rear panel (513), and in the moving process, because the rigid sheet body (55) has a certain thickness and an arc-shaped structure of the guide arc rod (57), the lower end of the rigid sheet body (55) always deflects towards the arc center of the guide arc rod (57), namely the middle sheet body rotates around the middle part of the lower end of the necking structure (515), so that the middle sheet body cannot be limited by the necking structure (515) to rotate; in the later stage of the deflection stroke of the middle sheet body, the rigid sheet body (55) extrudes the compressible silica gel or the sponge body (59) behind the rigid sheet body, one piezoelectric ceramic sheet array (522) facing the front side in the bendable sheet body (52) is shortened, and the piezoelectric ceramic sheet array (522) facing the rear side is extended, so that the bendable sheet body (52) is driven to bend forwards; in the process that the middle sheet body deflects backwards, the volume of the rear cavity (512) is reduced, the glue solution in the middle sheet body is extruded, the flexible sheet body (52) is bent forwards, the gap between the flexible sheet body (52) and the rear necking structure (515) is increased, the glue solution is extruded out through the gap between the flexible sheet body (52) and the rear necking structure (515) through extrusion, the flexible sheet body (52) is bent forwards at the moment, the surface facing backwards is a convex arc surface, and the glue solution flows downwards to the rear convex arc surface of the glue brushing body (53) along the convex arc surface under the action of the coanda effect; a certain amount of glue solution is extruded into the front cavity (511) through the glue inlet (514) in the process;
(3) the magnetic force of the electromagnet (56) of the front panel (513) is controlled to reduce or disconnect the magnetic force of the electromagnet (56) of the rear panel (513); under the action of magnetic attraction, the rigid sheet body (55) moves towards one side of the front panel (513), the upper part of the middle sheet body deflects forwards, the brush colloid (53) at the lower part deflects backwards, and in the moving process, as the distance between the brush colloid (53) and the adhesive tape base (6) is increased from large to small, the telescopic sheet body (58) is controlled to be gradually shortened to the initial length and then gradually extended so as to balance the change of the distance between the brush colloid (53) and the adhesive tape base (6), and the distance between the brush colloid (53) and the adhesive tape base (6) and the extrusion force are kept stable; so that the brush colloid (53) can be smoothly smeared with the glue solution backwards through the back of the brush colloid in a forward bending state; when the swing of the middle sheet body is fast to the limit, the piezoelectric ceramic plate array (522) facing the front side in the flexible sheet body (52) is controlled to extend, and the piezoelectric ceramic plate array (522) facing the rear side is controlled to shorten, so that the flexible sheet body (52) is driven to bend backwards; in the forward deflection process of the middle sheet body, the volume of the front cavity (511) is reduced, the glue solution in the middle sheet body is extruded, when the bendable sheet body (52) is converted into backward bending, the gap between the bendable sheet body (52) and the front necking structure (515) is increased, the glue solution is extruded out through the gap between the bendable sheet body (52) and the front necking structure (515) through extrusion, the bendable sheet body (52) is bent backwards at the moment, so that the surface facing the front is a convex arc surface, and the glue solution flows downwards along the convex arc surface to the front convex arc surface of the glue brushing body (53) under the action of the coanda effect; in the process, a certain amount of glue solution is extruded into the rear cavity (512) through the glue inlet (514);
(4) repeating the processes of the steps (2) and (3);
(5) when the brushed adhesive tape substrate (6) is led out by the adhesive tape lead-out roller (3), the ceramic heat radiation layer (33) which is heated by the electric heating layer (32) and radiates infrared rays outwards is subjected to primary drying to reduce the fluidity of the adhesive liquid.
10. A masking tape for spraying having a hollow pattern produced by the production method according to any one of claims 1 to 9.
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| CN202211494647.5A CN115785842A (en) | 2022-11-25 | 2022-11-25 | Masking tape with hollow patterns for spraying and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211494647.5A CN115785842A (en) | 2022-11-25 | 2022-11-25 | Masking tape with hollow patterns for spraying and preparation method thereof |
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| CN115350828A (en) * | 2022-08-15 | 2022-11-18 | 福建友谊胶粘带集团有限公司 | Coating machine and coating method for preparing adhesive tape |
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| CN1217955A (en) * | 1997-11-14 | 1999-06-02 | 阿克佐诺贝尔公司 | Method of glueing and device therefor |
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| JP2002001186A (en) * | 2000-06-21 | 2002-01-08 | Teijin Ltd | Coating method and device |
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