CN108772245B - Coating system combining straight strip type slit extrusion die and multiple rollers - Google Patents
Coating system combining straight strip type slit extrusion die and multiple rollers Download PDFInfo
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- CN108772245B CN108772245B CN201810776894.1A CN201810776894A CN108772245B CN 108772245 B CN108772245 B CN 108772245B CN 201810776894 A CN201810776894 A CN 201810776894A CN 108772245 B CN108772245 B CN 108772245B
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- glue
- steel roller
- transfer
- roller
- straight
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- 239000011248 coating agent Substances 0.000 title claims abstract description 40
- 238000000576 coating method Methods 0.000 title claims abstract description 40
- 238000001125 extrusion Methods 0.000 title claims abstract description 30
- 239000003292 glue Substances 0.000 claims abstract description 94
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 54
- 239000010959 steel Substances 0.000 claims abstract description 54
- 238000012546 transfer Methods 0.000 claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000010073 coating (rubber) Methods 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 238000004026 adhesive bonding Methods 0.000 abstract description 19
- 238000003892 spreading Methods 0.000 abstract description 11
- 230000007480 spreading Effects 0.000 abstract description 11
- 239000000853 adhesive Substances 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- 239000004831 Hot glue Substances 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 description 9
- 239000011888 foil Substances 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000012943 hotmelt Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009459 flexible packaging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
- B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
Landscapes
- Coating Apparatus (AREA)
Abstract
The invention discloses a coating system combining a straight-strip type slit extrusion die and multiple rollers, which comprises a transfer steel roller, a transfer rubber roller, a coating steel roller and a gluing press roller, wherein the straight-strip type slit extrusion die for extruding glue is arranged above the transfer steel roller, and the straight-strip type slit extrusion die comprises a die main body formed by two die pieces. The double-component hot melt adhesive is extruded by a straight strip type slit extrusion die after being mixed, the adhesive is coated on a transferring steel roller in a sheet shape, and then the adhesive is thinned by the transferring rubber roller and the coating steel roller according to a set speed ratio, and finally the adhesive is coated on a film. The advantages of this design are: (1) The adaptable glue spreading speed range is wide and is 5-450m/min; (2) The vibration problem during high-speed gluing and the problem of uneven gluing in the width direction are overcome. (3) The method can realize precise and reliable active control of the glue coating amount, and is not influenced by experience of operators and viscosity fluctuation of glue in different batches.
Description
Technical Field
The invention relates to the field of laminating of flexible packaging composite films, in particular to a coating system combining a straight strip type slit extrusion die and multiple rollers.
Background
At present, a conventional five-roller gluing device comprises a metering steel roller, a transferring steel roller and baffles on two sides. The mixed glue supplied by the glue supply device is stored in the glue tank, when the transferring steel roller rotates, the glue is taken out from the bottom of the glue tank, namely a gap between the two rollers, by the transferring steel roller, has a certain thickness, and then the glue is coated on the film after being thinned by the transferring rubber roller and the gluing steel roller. The thickness of the glue carried on the transfer roller is a major factor in determining the amount of glue obtained on the film. Such a gumming device has the following drawbacks: the glue coating amount is influenced by more factors, so that the situation that the glue coating amount is unstable (2) the metering steel roller serving as a part of the glue groove needs to be cleaned every 3-6 hours in the use process, the time and the labor are wasted (3) the curing speed of the glue cannot be designed to be too high in order to ensure the continuous production, and the curing condition of the composite film needs a long time (16-48 hours) and a high temperature (30-50 ℃) is caused.
Another patent (patent number 201410803560.0) that has been issued as an invention patent provides a solution. And an arc slit extrusion die is adopted, so that a metering steel roller is omitted. The arc-shaped die is driven by a servo motor to reciprocate above the transfer steel roller. The glue is directly supplied to the arc-shaped die by the glue supplying device, and after the glue is extruded from the arc-shaped die lip, the glue is uniformly smeared on the transferring steel roller. This solution solves the above-mentioned problems. But the following problems are found in production practice: (1) it is difficult to accommodate high-speed coating. At higher running speeds (not less than 120 m/min), the arc-shaped die needs to perform transverse reciprocating motion rapidly and frequently, so that the vibration of the whole gluing device is large, and stable running is not facilitated. (2) Although a servo motor with higher power is used to drive the arc-shaped mold to reciprocate transversely, the mold speed at the moment of switching the direction is necessarily lower than the normal speed, which results in the situation that the two sides of the arc-shaped mold are coated with more glue in the width direction.
Another solution was proposed internationally by a double-headed gumming process scheme developed jointly by the dow company and the nodeizer company. The glue A is glued on the first substrate film by the five-roller gluing head A, the glue B is glued on the second substrate film by the five-roller gluing head B, two components of the glue are mutually separated before the two substrate films are attached together, and no mutual reaction exists, so that the glue of the glue coating device is very stable. After the two substrate films are adhered together, the two components of the glue are combined together to start chemical curing reaction, and as more catalyst is added in the glue in advance, the curing reaction speed is higher, curing can be completed only at normal temperature of 4-12 hours, and curing time is greatly saved. But the following problems are found in production practice: (1) Before bonding, the two components are not mixed in proportion, the glue coating amount of each part on the glue coating breadth is required to be very uniform, otherwise, the glue ratio of the two components after bonding exceeds a set range, and the glue cannot be normally cured. (2) The adopted double-gluing heads are five-roller gluing heads, the device is complex, the occupied area is large, the reliability is low, and the cost is high. (3) Before each formal production, the setting and confirmation of the glue coating amount of each glue coating head are complicated, and more time is needed for confirmation. (4) The adhesive is suitable for liquid double-component adhesive with low molecular weight, has no initial adhesion, and can generate spot appearance problem when being used for PET (polyester film)/Al (aluminum foil), PET/VM-PET (vacuum aluminized polyester film) and other rigid/rigid structure films (foils) in combination.
Disclosure of Invention
The present invention aims to solve at least one of the above-mentioned technical problems in the related art to some extent. Therefore, the invention provides a coating system combining a straight strip type slit extrusion die and multiple rollers.
The technical scheme adopted for solving the technical problems is as follows:
The utility model provides a coating system of straight bar slit extrusion tooling and multi-roll combination, includes transfer steel roll, is located transfer rubber roll at transfer steel roll rear, be located transfer rubber roll rear is coating steel roll and the rubber coating compression roller of film rubber coating, its characterized in that: the straight-strip-shaped slit extrusion die for extruding glue is arranged above the transfer steel roller, the straight-strip-shaped slit extrusion die comprises a die body formed by two die pieces, a runner inlet, a tubular runner and a slit runner which are mutually communicated are formed in the die body, the tubular runner and the slit runner are horizontally arranged, and the runner inlet is perpendicular to the tubular runner.
As the improvement of the technical scheme, the front side of the transferring steel roller is provided with a glue supply device, the glue supply device comprises a glue storage barrel, a metering gear pump and a pressure sensor, and the glue supply device is connected with a runner inlet of the straight strip type slit extrusion die through a heatable static mixing pipe.
As a further improvement of the technical scheme, the front side of the transferring steel roller is provided with a glue supply device, two straight-strip-shaped slit extrusion dies are arranged above the transferring steel roller, the glue supply device comprises a glue storage barrel, a metering gear pump and a pressure sensor, and the two glue melting barrels are correspondingly connected with the two straight-strip-shaped slit extrusion dies through heat insulation pipelines respectively.
Further, the metering gear pump is arranged at the outlet of the glue storage barrel, and the pressure sensor is arranged below the metering gear pump.
Further, the transfer steel roller, the transfer rubber roller, the coating steel roller and the metering gear pump are driven by a servo motor. The rotation speed of the servo motor is controlled by a PLC (programmable logic controller) which receives the production line data and the data in the pressure sensor.
The beneficial effects of the invention are as follows: the utility model provides a coating system of straight bar slit extrusion tooling and multi-roll combination, includes transfer steel roll, is located transfer rubber roll at transfer steel roll rear, be located transfer rubber roll rear is coating steel roll and the rubber coating compression roller of film rubber coating, its characterized in that: the straight-strip-shaped slit extrusion die for extruding glue is arranged above the transfer steel roller, the straight-strip-shaped slit extrusion die comprises a die body formed by two die pieces, a runner inlet, a tubular runner and a slit runner which are mutually communicated are formed in the die body, the tubular runner and the slit runner are horizontally arranged, and the runner inlet is perpendicular to the tubular runner. The double-component hot melt adhesive is extruded by a straight strip type slit extrusion die after being mixed, the adhesive is coated on a transferring steel roller in a sheet shape, and then the adhesive is thinned by the transferring rubber roller and the coating steel roller according to a set speed ratio, and finally the adhesive is coated on a film. The advantages of this design are: (1) The adaptable glue spreading speed range is wide and is 5-450m/min; (2) The vibration problem during high-speed gluing and the problem of uneven gluing in the width direction are overcome. (3) The automatic glue spreading device can realize precise and reliable active control of the glue spreading amount, is not influenced by experiences of operators and viscosity fluctuation of glue in different batches, and does not need to add a complicated and expensive glue spreading thickness detection device. (4) The double-component hot melt adhesive with higher molecular weight can be used, has initial adhesion, and can not generate spot appearance problem when being used for the lamination of rigid/rigid structural films (foils) such as PET/Al, PET/VM-PET and the like. (5) When the scheme of the double-slit extrusion die is adopted, the double-component hot melt adhesive added with the catalyst can be used, and the curing speed of the glue at normal temperature can be greatly improved, so that the curing time is shortened, and the production efficiency is improved.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a mechanism of a second embodiment of the present invention;
FIG. 3 is a flow chart of the PLC control of the present invention;
Fig. 4 is a schematic view of a slot die of the present invention.
Description of the reference numerals: 1. transferring a steel roller; 2. transferring a rubber roller; 3. coating a steel roller; 4. a gluing press roller; 5. a slit die; 6. a heatable mixing tube; 7. a pressure sensor; 8. metering gear pump; 9. a servo motor; 10. a two-component glue supply device. ; 11. a double slit die; 12. a film; 13. a slit die runner inlet; 14. slit die tubular runner; 15. slit flow channel; 16. and (5) die segments.
Detailed Description
Referring to fig. 1, as a first embodiment of the present invention, a coating system of a combination of a straight slit extrusion die and multiple rolls is disclosed, comprising a transfer steel roll 1, a transfer rubber roll 2 positioned behind the transfer steel roll 1, a coating steel roll 3 positioned behind the transfer rubber roll 2 for coating a film 12, and a coating press roll 4, wherein: a straight strip type slit extrusion die 5 for extruding glue is arranged above the transfer steel roller 1. The double-component hot melt adhesive is melted in an adhesive storage barrel 10, pumped out by two metering gear pumps 8 according to the required flow, output by a heat-preserving pipeline, mixed in a heatable static mixing pipe 6, extruded by a straight strip type slit extrusion die 5, coated on a transfer steel roller 1 in a sheet shape, thinned according to the set speed ratio by the transfer rubber roller 2 and a coating steel roller 3, and finally coated on the surface of a film 12. The advantages of this design are: (1) The adaptable glue spreading speed range is wide and is 5-450m/min; (2) The vibration problem during high-speed gluing and the problem of uneven gluing in the width direction are overcome; (3) The automatic glue spreading device can realize precise and reliable active control of the glue spreading amount, is not influenced by experiences of operators and viscosity fluctuation of glue in different batches, and does not need to add a complicated and expensive glue spreading thickness detection device.
As an improvement of the technical scheme, the coating system supplies glue through a bi-component hot melt glue supply device 10, the glue supply device 10 adjusts the glue output through a metering gear pump 8, and a pressure sensor 7 is arranged below the metering gear pump 8; the pressure sensors 7 are adopted to monitor the pressure in the two glue delivery pipelines so as to ensure the stable operation and safety of the system. The transfer steel roller 1, the transfer rubber roller 2, the coating steel roller 3 and the metering gear pump 8 are driven by servo motors; the rotating speed of the servo motor is controlled by a PLC. During operation, the PLC calculates the rotating speeds of the two metering gear pumps 8 according to the gluing operation speed, the gluing width, the set gluing amount per unit area, the gear pump displacement, the proportion between the two components of glue and the like of the production line, commands the servo motor to drive the two metering gear pumps 8 to execute, outputs the two components of glue to the heat-preserving rubber conveying pipe according to the proportion and the flow, and finally coats the glue on the surface of the film 12 through the heatable static mixing pipe 6, the transfer rubber roller 1, the transfer rubber roller 2 and the gluing steel roller 3. Therefore, the size of the glue coating is very convenient to adjust, the coating amount of the glue coated on the surface of the film 12 can be changed only by changing the rotating speed of the servo motor for driving the metering gear pump 8 through the PLC, a clearance gauge is not needed to be used for determining the glue control gap, the dependence on experience of operators is reduced, and meanwhile, the influence of viscosity fluctuation of glue in different batches is avoided.
The glue supply device 10 is connected with the straight strip type mould 5 through a heatable static mixing pipe 6, and the bi-component hot melt glue is uniformly and fully mixed in the mixing pipe 6. The outer wall of the mixing tube 6 is sleeved with a heating sleeve, so that the viscosity of the two components is ensured to be in a lower state when the two components are mixed, and therefore, a double-component solvent-free adhesive with higher curing speed can be selected, and the production efficiency is greatly improved.
Referring to fig. 2, as a second embodiment of the present invention, there is disclosed a coating system of a combination of a straight slit extrusion die and multiple rolls, comprising a transfer steel roll 1, a transfer rubber roll 2 located behind the transfer steel roll 1, a coating steel roll 3 for coating a glue and a glue coating press roll 4 located behind the transfer rubber roll 2, characterized in that: two straight strip type slit extrusion dies 11 for extruding glue are arranged above the transfer steel roller 1. The two-component glue enters the respective mould runner inlets according to a certain proportion and flow, after being extruded by a slit mould 11, the two groups of glue are respectively coated on a transfer steel roller 1 in a sheet shape, and then the glue is thinned and fully mixed according to a set speed ratio by a transfer rubber roller 2 and a coating steel roller 3, and finally the glue is coated before a film 12. The advantages of this design are: (1) The double-component hot melt adhesive with higher molecular weight can be used, has initial adhesion, and can not generate spot appearance problem when being used for the lamination of rigid/rigid structural films (foils) such as PET/Al, PET/VM-PET and the like. (2) Compared with a glue spreading device using a glue groove or a single slit die, the glue spreading device does not have the parts of a large amount of mixed double-component glue such as the glue groove, the mixing tube and the like, so that the problem that the glue groove and the mixing tube are blocked due to too fast reaction of the mixed double-component glue is avoided, the double-component hot melt glue added with the catalyst can be used, the curing speed of the glue at normal temperature is improved, and the production efficiency is greatly improved.
While the above detailed construction and dimensional data have been provided for the purpose of illustrating the preferred embodiments of the present application, the present application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present application, and these equivalent modifications and substitutions are intended to be included in the scope of the present application as defined in the appended claims.
Claims (1)
1. The utility model provides a coating system of straight bar slit extrusion tooling and multi-roll combination, includes transfer steel roller (1), is located transfer rubber roll (2) at transfer steel roller (1) rear, be located transfer rubber roll (2) rear is coating steel roller (3) and rubber coating compression roller (4) of film (12) rubber coating, its characterized in that: a straight-strip-shaped slit extrusion die (5) for extruding glue is arranged above the transfer steel roller (1), the straight-strip-shaped slit extrusion die (5) comprises a die main body formed by two die halves (16), a runner inlet (13), a tubular runner (14) and a slit runner (15) which are mutually communicated are arranged in the die main body, wherein the tubular runner (14) and the slit runner (15) are horizontally arranged, and the runner inlet (13) is perpendicular to the tubular runner (14);
The glue feeding device is arranged at the front side of the transfer steel roller (1), two straight-strip slit extrusion dies (5) are arranged above the transfer steel roller (1), the glue feeding device comprises a glue storage barrel (17), a metering gear pump (8) and a pressure sensor (7), and the two glue melting barrels are correspondingly connected with the two straight-strip slit extrusion dies (5) through heat-insulation pipelines respectively;
the metering gear pump (8) is arranged at the outlet of the glue storage barrel (17), and the pressure sensor (7) is arranged below the metering gear pump (8);
The transfer steel roller (1), the transfer rubber roller (2), the coating steel roller (3) and the metering gear pump (8) are driven by a servo motor (9), and the rotating speed of the servo motor (9) is controlled by a PLC (programmable logic controller) which receives production line data and data in the pressure sensor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810776894.1A CN108772245B (en) | 2018-07-09 | 2018-07-09 | Coating system combining straight strip type slit extrusion die and multiple rollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810776894.1A CN108772245B (en) | 2018-07-09 | 2018-07-09 | Coating system combining straight strip type slit extrusion die and multiple rollers |
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| Publication Number | Publication Date |
|---|---|
| CN108772245A CN108772245A (en) | 2018-11-09 |
| CN108772245B true CN108772245B (en) | 2024-05-07 |
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| CN201810776894.1A Active CN108772245B (en) | 2018-07-09 | 2018-07-09 | Coating system combining straight strip type slit extrusion die and multiple rollers |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109569953A (en) * | 2018-12-14 | 2019-04-05 | 江西明冠锂膜技术有限公司 | Membrane material and lithium electrode plate substrate coating waste water method |
| DE102019110567A1 (en) * | 2019-04-24 | 2020-10-29 | Homag Gmbh | Adhesive application device |
| CN113263823B (en) * | 2021-05-31 | 2022-12-16 | 阳信思踏奇实业有限责任公司 | Composite manufacturing process of woven tufted carpet |
| CN113522699A (en) * | 2021-07-22 | 2021-10-22 | 裴贵芝 | Plastic film and preparation process thereof |
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2018
- 2018-07-09 CN CN201810776894.1A patent/CN108772245B/en active Active
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| US6342264B1 (en) * | 1999-10-29 | 2002-01-29 | Nordson Corporation | Method and apparatus for dispensing material onto substrates |
| CN101862722A (en) * | 2010-07-05 | 2010-10-20 | 中国乐凯胶片集团公司 | Pre-metering roll type coating device |
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| Publication number | Publication date |
|---|---|
| CN108772245A (en) | 2018-11-09 |
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