CN111216352A - Moisture-curing reaction type polyurethane hot melt adhesive steel plate film coating process - Google Patents
Moisture-curing reaction type polyurethane hot melt adhesive steel plate film coating process Download PDFInfo
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- CN111216352A CN111216352A CN202010047600.9A CN202010047600A CN111216352A CN 111216352 A CN111216352 A CN 111216352A CN 202010047600 A CN202010047600 A CN 202010047600A CN 111216352 A CN111216352 A CN 111216352A
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- hot melt
- melt adhesive
- steel plate
- polyurethane hot
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/0004—Component parts, details or accessories; Auxiliary operations
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a film coating process for a moisture-curing reaction type polyurethane hot melt adhesive steel plate, which comprises the following steps of heating a polyurethane hot melt adhesive under a vacuum closed condition to melt the polyurethane hot melt adhesive; secondly, carrying out dust removal and oil removal treatment on the surface to be bonded of the steel plate by adopting a physical or chemical method; adding the melted polyurethane hot melt adhesive into a coating machine, and coating the steel plate or the film material with the coating machine; bonding the glued steel plate with the film material which is not glued or the glued film material; and step five, placing the bonded plate in a natural state for curing or accelerating the curing. The method has the advantages that the bonding temperature is low by using the reactive polyurethane hot melt adhesive, the energy is saved, the production line is short, two bonded bodies can be fixed in a short time, the bonding process is quickly realized, and the production efficiency is improved; the reactive polyurethane hot melt adhesive is a solvent-free adhesive, does not need the drying process of the solvent-based adhesive, has no problems of environmental pollution and toxicity caused by the solvent, and meets the requirement of environmental protection.
Description
Technical Field
The invention relates to the technical field of steel plate film coating processes, in particular to a film coating process for a moisture-curing reaction type polyurethane hot melt adhesive steel plate.
Background
In the production process of a steel plate, in order to prevent the product from scraping, isolating and other requirements, a film needs to be coated on the steel plate, a layer of glue needs to be coated on the surface of the steel plate before the film is coated, and the current manufacturing process of the coated steel plate is generally carried out by adopting a normal-temperature liquid adhesive and a high-temperature melting mode.
The Chinese patent CN108940719A discloses a gluing process of a steel plate film covering process, which comprises glue mixing, glue injection and gluing, and the method is very easy to generate wrapped bubbles in the using process, thereby generating adverse effects on an adhesive layer, and particularly easily generating the phenomena of bulging and falling off.
Chinese invention patent CN109291420A discloses a film coating process of a steel plate film coating process, which comprises the following steps: the method comprises the steps of gluing, oven heating, film coating, water cooling and air drying, wherein the film layer is required to be in a molten state at a high temperature of 180-240 ℃, and then the film layer is adhered to a steel plate.
In view of the above, there is an urgent need to improve the existing steel plate film coating process to increase the film coating adhesion and save resources.
Disclosure of Invention
The invention aims to solve the technical problems that the existing steel plate film covering process is not firm in film covering and wastes resources.
In order to solve the technical problems, the technical scheme adopted by the invention is to provide a film coating process for a moisture-curing reaction type polyurethane hot melt adhesive steel plate, which comprises the following steps: melting glue, gluing and curing, namely:
step one, heating a polyurethane hot melt adhesive under a vacuum closed condition to melt the polyurethane hot melt adhesive;
secondly, carrying out dust removal and oil removal treatment on the surface to be bonded of the steel plate by adopting a physical or chemical method;
adding the melted polyurethane hot melt adhesive into a coating machine, and coating the steel plate or the film material with the coating machine;
bonding the glued steel plate with the film material which is not glued or the glued film material with the glued steel plate;
and step five, placing the bonded plate in a natural state for curing or accelerating the curing to finish film covering.
In the scheme, the heating temperature of the polyurethane hot melt adhesive is 40-120 ℃.
In the scheme, before gluing, the non-woven fabric is dipped with the diluent to wipe the coating roller in the coating machine clean from left to right or from the middle to two sides, so that the surface of the coating roller is smooth and has no impurity residue.
In the scheme, the door and the window of the gluing chamber are kept in a closed state before gluing, the floor is dragged once by the wet mop, and the floor is kept wet, clean and dustless.
In the scheme, the method of air blowing, wiping or grinding is adopted to remove the floating soil and the oxide skin on the surface of the steel plate, and the method of acid cleaning is adopted to remove the oil stain on the surface of the steel plate.
In the scheme, after the polyurethane hot melt adhesive is added into the coating machine, the polyurethane hot melt adhesive needs to be prevented from contacting with air or water vapor in the coating process.
In the scheme, the gap between the coating roll and the steel plate is adjusted in time in the gluing process to prevent missing coating, the wet film thickness is measured by a wet film thickness gauge, and the gap between the rubber-covered roll and the coating roll is adjusted to enable the film thickness to be in a process range.
In the scheme, the natural state curing condition is a natural environment at normal temperature and normal pressure, and the condition for accelerating curing is an environment at normal pressure, the temperature is 30-50 ℃, and the humidity is 50-90%.
Compared with the prior art, the adhesive temperature and the heating temperature of the reactive polyurethane hot melt adhesive are low, and energy is saved; because the heating temperature is low, the production line is short, and the two adhered bodies can be fixed in a short time, the assembly part can be quickly transferred to the next processing procedure, the adhering procedure can be quickly realized, and the production efficiency is improved; the reactive polyurethane hot melt adhesive is a solvent-free adhesive, does not need the drying process of the solvent-based adhesive, has no problems of environmental pollution and toxicity caused by the solvent, and meets the requirement of environmental protection; the process adopts later-stage curing to realize the sufficient crosslinking of the molecules of the reactive hot melt adhesive, and the formed adhesive layer has the characteristics of excellent heat resistance, cold resistance, vapor resistance, chemical resistance and solvent resistance.
Detailed Description
The invention provides a film coating process for a moisture-curing reaction type polyurethane hot melt adhesive steel plate, which saves resources and has high steel plate adhesion degree. The present invention is described in detail below.
The invention provides a moisture-curing reaction type polyurethane hot melt adhesive steel plate film coating process which comprises the following steps: melting glue, gluing and curing, namely:
step one, heating a polyurethane hot melt adhesive under a vacuum closed condition to melt the polyurethane hot melt adhesive;
secondly, carrying out dust removal and oil removal treatment on the surface to be bonded of the steel plate by adopting a physical or chemical method;
adding the melted polyurethane hot melt adhesive into a coating machine, and coating the steel plate or the film material with the coating machine;
bonding the glued steel plate with the film material which is not glued or the glued film material with the glued steel plate;
and step five, placing the bonded plate in a natural state for curing or accelerating the curing to finish film covering.
The adhesive temperature of the reactive polyurethane hot melt adhesive is low, the heating temperature is low, and energy is saved; because the heating temperature is low, the production line is short, and the two adhered bodies can be fixed in a short time, the assembly part can be quickly transferred to the next processing procedure, the adhering procedure can be quickly realized, and the production efficiency is improved; the reactive polyurethane hot melt adhesive is a solvent-free adhesive, does not need the drying process of the solvent-based adhesive, has no problems of environmental pollution and toxicity caused by the solvent, and meets the requirement of environmental protection; the process adopts later-stage curing to realize the sufficient crosslinking of the molecules of the reactive hot melt adhesive, and the formed adhesive layer has the characteristics of excellent heat resistance, cold resistance, vapor resistance, chemical resistance and solvent resistance.
The heating temperature of the polyurethane hot melt adhesive is 40-120 ℃, the temperature to be heated is low, resources are saved, the heating time is shortened, and the production efficiency is improved.
Before gluing, the non-woven fabric dipped with a diluent is used for wiping the coating roller in the coating machine from left to right or from the middle to two sides, so that the surface of the coating roller is smooth and has no impurity residue, and two shaft ends of the coating roller must be wiped clean when the coating roller is wiped.
Before the glue is coated, the door and the window of the glue coating chamber are kept in a closed state, the floor is dragged once by the wet mop, and the floor is kept moist, clean and dustless. Avoid the pollution that causes too much dust when the rubber coating, influence tectorial membrane steel sheet quality.
And removing the floating soil and the oxide skin on the surface of the steel plate by adopting an air blowing, wiping or grinding method, and removing the oil stain on the surface of the steel plate by adopting an acid washing method.
After the polyurethane hot melt adhesive is added into the coating machine, the polyurethane hot melt adhesive needs to be prevented from contacting with air or water vapor in the coating process, so that the failure of the hot melt adhesive is avoided.
And in the gluing process, the clearance between the coating roller and the steel plate is adjusted in time to prevent missing coating, the thickness of the wet film is measured by a wet film thickness gauge, and the clearance between the rubber-covered roller and the coating roller is adjusted to enable the thickness of the film to be within the process range.
The natural state curing condition is a natural environment at normal temperature and normal pressure, and the condition for accelerating curing is an environment at normal pressure, the temperature is 30-50 ℃, and the humidity is 50-90%.
The adhesive temperature of the reactive polyurethane hot melt adhesive is low, the heating temperature is low, and energy is saved; because the heating temperature is low, the production line is short, and the two adhered bodies can be fixed in a short time, the assembly part can be quickly transferred to the next processing procedure, the adhering procedure can be quickly realized, and the production efficiency is improved; the reactive polyurethane hot melt adhesive is a solvent-free adhesive, does not need the drying process of the solvent-based adhesive, has no problems of environmental pollution and toxicity caused by the solvent, and meets the requirement of environmental protection; the process adopts later-stage curing to realize the sufficient crosslinking of the molecules of the reactive hot melt adhesive, and the formed adhesive layer has the characteristics of excellent heat resistance, cold resistance, vapor resistance, chemical resistance and solvent resistance.
The present invention is not limited to the above-mentioned preferred embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.
Claims (8)
1. A moisture-curing reaction type polyurethane hot melt adhesive steel plate film coating process is characterized by comprising the following steps: melting glue, gluing and curing, namely:
heating a polyurethane hot melt adhesive under a vacuum closed condition to melt the polyurethane hot melt adhesive, wherein the polyurethane hot melt adhesive is a moisture-curing reaction type solvent-free polyurethane adhesive;
secondly, carrying out dust removal and oil removal treatment on the surface to be bonded of the steel plate by adopting a physical or chemical method;
adding the melted polyurethane hot melt adhesive into a coating machine, and coating the steel plate or the film material with the coating machine;
bonding the glued steel plate with the film material which is not glued or the glued film material with the glued steel plate;
and step five, placing the bonded plate in a natural state for curing or accelerating the curing to finish film covering.
2. The moisture-curing reaction type polyurethane hot melt adhesive steel plate film laminating process according to claim 1, wherein the heating temperature of the polyurethane hot melt adhesive is 40-120 ℃.
3. The process for laminating the moisture-curing reactive polyurethane hot melt adhesive steel plate according to claim 1, wherein a non-woven fabric dipping diluent is used for wiping a coating roller in the coating machine from left to right or from the middle to two sides to be clean before gluing, so that the surface of the coating roller is smooth and free of impurity residues.
4. The process for laminating the moisture-curing reactive polyurethane hot melt adhesive steel plate according to claim 1, wherein before the adhesive coating, the door and the window of the adhesive coating chamber are kept in a closed state, and the floor is dragged once by a wet mop to keep the floor wet, clean and dustless.
5. The process for coating the moisture-curing reactive polyurethane hot melt adhesive steel plate according to claim 1, wherein the method of air blowing, wiping or polishing is adopted to remove the floating soil and the oxidized scale on the surface of the steel plate, and the method of acid washing is adopted to remove the oil stain on the surface of the steel plate.
6. The process for laminating the moisture-curing reactive polyurethane hot melt adhesive steel plate according to claim 1, wherein after the polyurethane hot melt adhesive is added into the coating machine, the polyurethane hot melt adhesive is prevented from contacting with air or water vapor in the coating process.
7. The moisture-curing reactive polyurethane hot melt adhesive steel plate film coating process according to claim 1, wherein in the process of gluing, the gap between the coating roller and the steel plate is adjusted in time to prevent missing coating, the wet film thickness is measured by a wet film thickness gauge, and the gap between the rubber-carrying roller and the coating roller is adjusted to enable the film thickness to be within the process range.
8. The process for laminating the moisture-curing reactive polyurethane hot melt adhesive steel plate according to claim 1, wherein the natural-state curing condition is a natural environment at normal temperature and normal pressure, and the condition for accelerating the curing is an environment at normal pressure, the temperature is 30-50 ℃, and the humidity is 50-90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010047600.9A CN111216352A (en) | 2020-01-16 | 2020-01-16 | Moisture-curing reaction type polyurethane hot melt adhesive steel plate film coating process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010047600.9A CN111216352A (en) | 2020-01-16 | 2020-01-16 | Moisture-curing reaction type polyurethane hot melt adhesive steel plate film coating process |
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| CN111216352A true CN111216352A (en) | 2020-06-02 |
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| CN202010047600.9A Pending CN111216352A (en) | 2020-01-16 | 2020-01-16 | Moisture-curing reaction type polyurethane hot melt adhesive steel plate film coating process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524701A (en) * | 2021-06-17 | 2021-10-22 | 杭州普络飞新材料科技有限公司 | Solvent-free steel plate film coating process |
| CN116967930A (en) * | 2023-09-21 | 2023-10-31 | 上海芯谦集成电路有限公司 | Polishing pad for special hot melt adhesive processing technology and preparation method thereof |
Citations (6)
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|---|---|---|---|---|
| JPH11244776A (en) * | 1998-02-26 | 1999-09-14 | Sumitomo Metal Steel Products Inc | Method for controlling coating film thickness of belt-shaped body |
| CN102225653A (en) * | 2011-04-12 | 2011-10-26 | 马鞍山钢铁股份有限公司 | Production method of hot-applied film color-coated board |
| CN108940719A (en) * | 2018-09-11 | 2018-12-07 | 安徽墙煌彩铝科技有限公司 | A kind of coating process of steel plate coating technique |
| CN109291420A (en) * | 2018-09-11 | 2019-02-01 | 安徽墙煌彩铝科技有限公司 | A kind of coating processes of steel plate coating technique |
| US20190085212A1 (en) * | 2017-09-21 | 2019-03-21 | The Boeing Company | Adhesion-Regulating Agents and Methods For Tuning Adhesion Strength of Acrylic Adhesives By Substrate Modification |
| CN110434176A (en) * | 2019-08-09 | 2019-11-12 | 郭亚亚 | A kind of cold-reduced sheet manufacturing process |
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2020
- 2020-01-16 CN CN202010047600.9A patent/CN111216352A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11244776A (en) * | 1998-02-26 | 1999-09-14 | Sumitomo Metal Steel Products Inc | Method for controlling coating film thickness of belt-shaped body |
| CN102225653A (en) * | 2011-04-12 | 2011-10-26 | 马鞍山钢铁股份有限公司 | Production method of hot-applied film color-coated board |
| US20190085212A1 (en) * | 2017-09-21 | 2019-03-21 | The Boeing Company | Adhesion-Regulating Agents and Methods For Tuning Adhesion Strength of Acrylic Adhesives By Substrate Modification |
| CN108940719A (en) * | 2018-09-11 | 2018-12-07 | 安徽墙煌彩铝科技有限公司 | A kind of coating process of steel plate coating technique |
| CN109291420A (en) * | 2018-09-11 | 2019-02-01 | 安徽墙煌彩铝科技有限公司 | A kind of coating processes of steel plate coating technique |
| CN110434176A (en) * | 2019-08-09 | 2019-11-12 | 郭亚亚 | A kind of cold-reduced sheet manufacturing process |
Non-Patent Citations (2)
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| 向明: "《热熔胶粘剂》", 28 February 2002, 化学工业出版社 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113524701A (en) * | 2021-06-17 | 2021-10-22 | 杭州普络飞新材料科技有限公司 | Solvent-free steel plate film coating process |
| CN116967930A (en) * | 2023-09-21 | 2023-10-31 | 上海芯谦集成电路有限公司 | Polishing pad for special hot melt adhesive processing technology and preparation method thereof |
| CN116967930B (en) * | 2023-09-21 | 2024-01-02 | 上海芯谦集成电路有限公司 | Polishing pad for special hot melt adhesive processing technology and preparation method thereof |
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Application publication date: 20200602 |