CN115195321A - UV laser transfer paper capable of being accurately positioned and manufacturing process thereof - Google Patents
UV laser transfer paper capable of being accurately positioned and manufacturing process thereof Download PDFInfo
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- CN115195321A CN115195321A CN202211128828.6A CN202211128828A CN115195321A CN 115195321 A CN115195321 A CN 115195321A CN 202211128828 A CN202211128828 A CN 202211128828A CN 115195321 A CN115195321 A CN 115195321A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/025—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet
- B41M5/035—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic
- B41M5/0353—Duplicating or marking methods; Sheet materials for use therein by transferring ink from the master sheet by sublimation or volatilisation of pre-printed design, e.g. sublistatic using heat shrinkable film material; Thermotransfer combined with the shaping of the workpiece; Recto-verso printing; Image correction
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/008—Sequential or multiple printing, e.g. on previously printed background; Mirror printing; Recto-verso printing; using a combination of different printing techniques; Printing of patterns visible in reflection and by transparency; by superposing printed artifacts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
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Abstract
The invention relates to the technical field of packaging materials and discloses a manufacturing process of accurately positioned UV laser transfer paper, wherein water-based paint is coated on base paper, and a bottom coating is formed on the surface of the base paper; the UV composite laser coating is coated on the bottom coating, after a UV coating is formed on the surface of the bottom coating, the UV composite laser coating is subjected to die pressing composite with a BOPP seamless laser film to form a paper film composite material, after the BOPP seamless laser film is peeled off, an information layer is formed on the UV coating, and then positioning and paper cutting are carried out to obtain the UV laser transfer paper with accurate positioning.
Description
Technical Field
The invention relates to the technical field of packaging materials, in particular to UV laser transfer paper with accurate positioning and a manufacturing process thereof.
Background
In recent years, with the continuous fierce market competition, the grade of consumers is greatly improved, the packaging industry faces huge challenges, the packaging printing industry develops towards the direction of green energy conservation and environmental protection, the traditional gold stamping process, also called as a hot stamping process, transfers the patterns, the anti-counterfeiting information, the aluminum layer, the dielectric layer and the like on the hot stamping film of the alumite to a printing stock by using a hot pressing transfer principle, the gold stamping film can only stamp one gold stamping pattern at a time, the production efficiency is low, and the cost is high.
The laser transfer paper is widely applied to the packaging industry, compared with other products in the industry, the laser transfer paper has the characteristics of novel and bright appearance and excellent anti-counterfeiting effect, is widely applied to the fields of cigarette packaging boxes, medicines, cosmetics and the like, has strong market applicability in the aspects of printing process and green energy conservation and environmental protection, forms an information carrier on a laser film, transfers information to a product by a method of firstly laminating and then peeling to form a unique laser effect, plays a good anti-counterfeiting role, uses the advantages of a UV curing technology in the laminating process, combines the UV ultraviolet curing technology and a die pressing technology, can well copy holographic information, can realize reutilization of the laminating film, achieves the effects of green energy conservation and environmental protection, and has wide market demands.
Disclosure of Invention
In order to solve the technical problems, the invention provides the accurate positioning UV laser transfer paper and the manufacturing process thereof, the picture and text of the accurate positioning UV laser transfer paper are fine and complete, the working procedures are reduced, the production cost is reduced, the production efficiency is improved, meanwhile, the coating and mould pressing device is used, the advantages of adjustable coating thickness, capability of replacing raw materials without stopping the machine and the like are achieved, and the problems that the machine is required to be stopped to replace the roll paper and the coating thickness of the roll paper is not adjustable are solved.
In order to achieve the purpose, the invention discloses a manufacturing process of UV laser transfer paper with accurate positioning, which comprises the following steps:
step one, coating a water-based coating on base paper, and drying the base paper by a far infrared oven to form a bottom coating on the surface of the base paper;
step two, coating UV composite laser paint on the bottom coating in the step one, leveling by a far infrared oven, and forming a UV coating on the surface of the bottom coating;
step three, the UV coating in the step two and a BOPP seamless laser film are subjected to die pressing and compounding, and a paper film composite material is formed after the UV coating is cured by an ultraviolet lamp;
step four, stripping the BOPP seamless laser film from the paper film composite material obtained in the step three on a stripping machine, copying information on the BOPP seamless laser film onto the UV coating, and forming an information layer on the UV coating to obtain the stripped paper film composite material;
and step five, positioning and cutting the paper film composite material stripped in the step four on a precise positioning transverse cutting machine according to the printing layout of the printing stock to obtain the precise positioning UV laser transfer paper.
Preferably, the base paper in the first step includes one of white cardboard, coated paper and glass cardboard.
Further, the base paper in the first step is preferably white cardboard, wherein the gram weight of the white cardboard is 170-230g/m 2 。
Preferably, the aqueous coating in step one is SurCoat E, available from McKemena, USA.
Preferably, the gram weight of the base coating in the first step is 5g/m 2 。
Preferably, the model of the UV laser composite coating in the second step is PT2006K, which is purchased from Shanghai Weikai chemical Co., ltd, and the viscosity is 20-25s.
Preferably, the thickness of the UV coating layer in the second step is 4-6 μm.
Preferably, the ultraviolet lamp in the third step is an LED-UV curing lamp.
Further, in the third step, the UV lamp is used for curing by irradiating the UV coating with a 200-400nm UV light source.
Preferably, the thickness of the BOPP seamless laser film in the third step is 15-24 μm.
Further, the thickness of the BOPP seamless laser film in the third step is preferably 18 μm.
Preferably, the BOPP seamless laser film in the fourth step comprises one of a light beam, a plain surface and a special pattern.
Preferably, holographic information is printed on the BOPP plate-seam-free laser film in the fourth step.
Preferably, the information on the UV coating in step four is one of a pattern, a character and a LOGO.
The invention also provides a coating and die pressing device which can meet the requirements of coating and die pressing processes for preparing the paper film composite material.
Preferably, coating molding device, including stock form change module, coating module, the stock form is changed the module and is included fixed module, stock form pole, wherein the stock form pole has a plurality ofly, the stock form pole is installed fixed module is last, works as fixed module can make fixed module and frame relatively fixed during the downstream, the coating module includes extrusion piece, mobile device, applicator and abutting block, the applicator is installed on the extrusion piece, the extrusion piece is connected with the mobile device, the mobile device can make the extrusion piece reciprocate to change the distance of extrusion piece and abutting block.
Preferably, the stock form replacement module further comprises a base station, a rotating shaft is mounted on the base station, the rotating shaft is matched with the base station in a rotating mode, a rotating frame rod is arranged on the rotating shaft, displacement holes are formed in two ends of the rotating frame rod, the fixing module is arranged in the displacement holes, the fixing module comprises a sliding block, a limiting buckle and a limiting baffle, the sliding block slides in the displacement holes, the limiting buckle is arranged on one side of the sliding block, the limiting baffle is arranged on the other side of the sliding block, a sliding rod penetrates through the sliding block, the sliding rod is arranged in the displacement holes, a spring is wound on the sliding rod, one end of the spring is fixedly connected with the sliding block, the other end of the spring is fixedly connected with the bottom end of the displacement hole, the base station is mounted on one side of the rack, a hole is formed in the rack, and the limiting buckle can enter the hole.
Preferably, one end of the roll paper rod is attached to the limit baffle, the other end of the roll paper rod is in running fit with the second limit baffle, a second sliding block is arranged at one end of the second limit baffle, the roll paper replacement module further comprises a second rotating frame rod, second displacement holes are formed in two ends of the second rotating frame rod, the second sliding block is arranged in the second displacement holes, a second rotating shaft is arranged on the second rotating frame rod, the second rotating shaft penetrates through the base platform, a ratchet wheel is arranged at the other end of the second rotating shaft, limit holes are formed in the rack, a pawl and a limit spring are arranged in the limit holes, one end of the pawl is connected with the push switch, the limit spring is installed on the push switch, and the limit spring pushes the push switch towards the ratchet wheel all the time.
Preferably, the coating module still includes the box, the box with frame fixed connection, the handle hole that runs through is seted up to the box, be provided with a plurality of rollers of group in the box for the base stock that will get into levels, the roller is provided with suppressing piece and extrusion piece on one side, suppressing piece with the extrusion piece aligns perpendicularly, install on the extrusion piece the obliterator, be connected with the hose on the obliterator, the other end of hose with paint the liquid case and be connected, still install the small roller in the box and leave the angle of box in order to be used for changing the base stock, the one end of extrusion piece is provided with spacing boss, set up threaded hole on the spacing boss, be provided with the lead screw in the threaded hole, the movable orifices has been seted up in the frame, the both sides of spacing boss with the both sides in movable orifice are closely laminated, the lead screw passes both ends about the movable orifice, the one end of lead screw is provided with rotatory handle.
Preferably, one side of the rack is provided with a die module, the die module comprises a plurality of groups of squeeze rolls, each group of squeeze rolls comprises an upper squeeze roll and a lower squeeze roll, rotating shafts are mounted on the upper squeeze roll and the lower squeeze roll and share the same axis with the rotating shafts, and a collection drum is arranged beside the die module.
Preferably, the frame top is provided with infrared stoving case, be provided with the tensile roller of multiunit in the infrared stoving case, the discharge gate has been seted up on one side box of infrared stoving case.
Preferably, a partition board is installed on the rack, the roll paper replacing module and the coating module are installed on the upper portion of the partition board, a raw material winding rod is installed on the lower portion of the partition board, and meanwhile, a discharge hole is also formed in the rack so that raw materials on the raw material winding rod can leave from the discharge hole.
Preferably, a plurality of rollers are arranged on the machine frame.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, BOPP seamless laser film information is transferred through the UV coating, the UV coating (image-text information) is completely transferred onto the base paper, the UV coating has the advantages of high hardness, high gloss and good transparency, so that the image-text details on the base paper are more precise, complete and wear-resistant, the anti-counterfeiting effect can be effectively improved, the UV laser transfer paper obtained through the UV process has better flexibility and greatly improved folding resistance, and the phenomenon of paper bursting is not easy to occur, compared with the traditional laser transfer paper, the BOPP seamless laser film has certain effects of mildew resistance, moisture resistance and yellowing resistance, and is an ideal packaging material, wherein the precisely positioned UV transfer paper has precise and complete image-text, has no solvent residue, and is small in environmental pollution, high in holographic pattern brightness, the BOPP seamless laser film can be repeatedly used, the laser procedures are reduced, the production cost is reduced, and the production efficiency is improved;
2. according to the invention, the base paper is coated, so that the base paper can be endowed with oil stain resistance and waterproof performance, the damage and contamination of the base paper in the using process are effectively avoided, and meanwhile, the base paper has good release performance, cold glue adhesiveness, hot melt glue adhesiveness and recoating performance, has the characteristics of environmental protection, good recyclability and wide compliance, can be activated to initiate the film material to react and solidify to form a film by utilizing the irradiation of an ultraviolet light source, does not need heat energy in the whole solidifying process, is low in energy consumption, can greatly reduce the energy consumption and the production cost, and the obtained accurate positioning UV transfer printing paper has the characteristics of fine and complete pictures and texts;
3. the invention makes old roll paper be replaced in time when the roll paper is about to be used up by alternately replacing a plurality of roll paper rods, and simultaneously makes the roll paper rods fixed or movable by utilizing the self gravity change of the roll paper, the head end of new roll paper is adhered to the surface of the roll paper in use through an adhesive by manpower during a short halt, the old roll paper is cut by a blade, after the roll paper is opened again, the new roll paper enters the device along with the old roll paper, so that the new roll paper does not need to be wound in the device again, the defect that the roll paper needs to be replaced by stopping for a long time originally is solved, the working efficiency is greatly increased, the extrusion block is controlled to move up and down by the rotation of the screw rod, so that the distance between the extrusion block and the pressing block is changed, the coating liquid flowing out from the applicator is coated on the base paper through the extrusion block, the coating liquid covering thickness is changed because the distance between the extrusion block and the pressing block is changed, the second roll paper can only rotate in a single direction by the ratchet pawl, the roll paper rod is prevented from falling off due to the weight of the roll paper in the rotation process, and the roll paper is prevented from moving towards the ratchet wheel fixing direction by the ratchet wheel when the limiting buckle and the hole are separated.
Drawings
FIG. 1 is a flow chart of the present invention for preparing a precisely positioned UV laser transfer paper;
FIG. 2 is an overall view of the coating die apparatus of the present invention;
FIG. 3 is an enlarged view of the overall view A of the coating die assembly of the present invention;
FIG. 4 is an enlarged view of the overall view B of the coating die apparatus of the present invention;
FIG. 5 is a cross-sectional view of the coating die apparatus of the present invention;
FIG. 6 is an enlarged view of a portion of the position of the coating die apparatus of the present invention;
FIG. 7 is a schematic structural diagram of an embodiment of the present invention;
fig. 8 is a partial structural diagram of an embodiment of the invention.
In the figure: 1. a roll paper replacement module; 101. a fixed module; 1011. a slider; 1012. a limiting buckle; 1013. a limit baffle; 102. a roll paper lever; 103. a base station; 104. a rotating shaft; 105. rotating the frame rod; 106. a displacement hole; 107. a slide bar; 108. a spring; 109. a second limit baffle; 110. a second slider; 111. a second displacement bore; 112. a second rotating frame bar; 113. a second rotation shaft; 114. a ratchet wheel; 2. a coating module; 201. extruding the block; 202. a mobile device; 2021. a limiting boss; 2022. a threaded hole; 2023. a screw rod; 2024. rotating the handle; 203. an applicator; 204. a pressing block; 205. a box body; 206. an operation hole; 207. a roller; 208. a small roll; 3. a die module; 301. a squeeze roll; 3011. an upper squeeze roll; 3012. a lower squeeze roll; 302. a rotating shaft; 4. a frame; 401. a hole; 402. a limiting hole; 403. a pawl; 404. a limiting spring; 405. a movable hole; 406. a partition plate; 407. rolling a raw material rod; 408. a roller; 5. collecting the wound roll; 6. an infrared drying box; 601. a stretching roller; 7. BOPP laser film; 8. an information layer; 9. UV coating; 10. a primer layer; 11. and (7) base paper.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without any creative work based on the embodiments of the present invention belong to the protection scope of the present invention.
Example 1
A manufacturing process of UV laser transfer paper with accurate positioning comprises the following steps:
(1) Coating a water-based coating on the white cardboard, wherein the gram weight of the white cardboard is 170g/m 2 Drying the paper by a far infrared oven to form a base paper with the gram weight of 5g/m 2 A base coat layer of (1);
(2) Coating UV composite laser paint on the bottom coating, leveling by a far infrared oven, and forming a UV coating with the thickness of 4 mu m on the surface of the bottom coating;
(3) The UV coating and the BOPP seamless laser film are subjected to die pressing and compounding, wherein the thickness of the BOPP seamless laser film is 15 mu m, and the BOPP seamless laser film is cured by an LED-UV curing lamp, wherein the ultraviolet light source is 200nm, so that a paper film composite material is formed;
(4) Stripping a BOPP seamless laser film from the paper film composite material on a stripping machine, wherein holographic information is printed on the BOPP seamless laser film, the information on the BOPP seamless laser film is copied onto a UV coating, and an information layer is formed on the UV coating to obtain the stripped paper film composite material;
(5) And (3) positioning and cutting the peeled paper film composite material on a precise positioning transverse cutting machine according to the printing layout of the printing stock to obtain the precise positioning UV laser transfer paper.
Example 2
A manufacturing process of UV laser transfer paper with accurate positioning comprises the following steps:
(1) Coating a water-based coating on the white cardboard, wherein the gram weight of the white cardboard is 185g/m 2 Drying the paper by a far infrared oven to form a base paper with the gram weight of 5g/m 2 The undercoat layer of (a);
(2) Coating UV composite laser paint on the bottom coating, leveling by a far infrared oven, and forming a UV coating with the thickness of 4.5 mu m on the surface of the bottom coating;
(3) The UV coating and the BOPP seamless laser film are subjected to die pressing and compounding, wherein the thickness of the BOPP seamless laser film is 18 mu m, and the BOPP seamless laser film is cured by an LED-UV curing lamp, wherein the ultraviolet light source is 250nm, so that a paper film composite material is formed;
(4) Stripping a BOPP seamless laser film from the paper film composite material on a stripping machine, wherein holographic information is printed on the BOPP seamless laser film, the information on the BOPP seamless laser film is copied onto a UV coating, and an information layer is formed on the UV coating to obtain the stripped paper film composite material;
(5) And (3) positioning and cutting the peeled paper film composite material on a precise positioning transverse cutting machine according to the printing layout of the printing stock to obtain the precise positioning UV laser transfer paper.
Example 3
A manufacturing process of UV laser transfer paper with accurate positioning comprises the following steps:
(1) Coating aqueous paint on white cardboardThe gram weight of the white cardboard is 200g/m 2 Drying the paper by a far infrared oven to form a base paper with the gram weight of 5g/m 2 A base coat layer of (1);
(2) Coating UV composite laser paint on the bottom coating, leveling by a far infrared oven, and forming a UV coating with the thickness of 5 mu m on the surface of the bottom coating;
(3) The UV coating and the BOPP seamless laser film are subjected to die pressing and compounding, wherein the thickness of the BOPP seamless laser film is 18 mu m, and the BOPP seamless laser film is cured by an LED-UV curing lamp, wherein the ultraviolet light source is 300nm, so that a paper film composite material is formed;
(4) Peeling a BOPP (biaxially-oriented polypropylene) seamless laser film from the paper film composite material on a peeling machine, printing holographic information on the BOPP seamless laser film, copying the information on the BOPP seamless laser film onto a UV (ultraviolet) coating, and forming an information layer on the UV coating to obtain the peeled paper film composite material;
(5) And (3) positioning and cutting the peeled paper film composite material on a precise positioning transverse cutting machine according to the printing layout of the printing stock to obtain the precise positioning UV laser transfer paper.
Example 4
A manufacturing process of UV laser transfer paper with accurate positioning comprises the following steps:
(1) Coating a water-based coating on the white cardboard, wherein the gram weight of the white cardboard is 215g/m 2 Drying the paper by a far infrared oven to form a base paper with the gram weight of 5g/m 2 The undercoat layer of (a);
(2) Coating UV composite laser paint on the bottom coating, leveling by a far infrared oven, and forming a UV coating with the thickness of 5.5 mu m on the surface of the bottom coating;
(3) The UV coating and the BOPP seamless laser film are subjected to die pressing and compounding, wherein the thickness of the BOPP seamless laser film is 18 mu m, and the BOPP seamless laser film is cured by an LED-UV curing lamp, wherein the ultraviolet light source is 350nm, so that a paper film composite material is formed;
(4) Stripping a BOPP seamless laser film from the paper film composite material on a stripping machine, wherein holographic information is printed on the BOPP seamless laser film, the information on the BOPP seamless laser film is copied onto a UV coating, and an information layer is formed on the UV coating to obtain the stripped paper film composite material;
(5) And (3) positioning and cutting the peeled paper film composite material on a precise positioning transverse cutting machine according to the printing layout of the printing stock to obtain the precise positioning UV laser transfer paper.
Example 5
A manufacturing process of UV laser transfer paper with accurate positioning comprises the following steps:
(1) Coating a water-based coating on the white cardboard, wherein the gram weight of the white cardboard is 230g/m 2 Drying the base paper by a far infrared oven to form the base paper with the gram weight of 5g/m 2 A base coat layer of (1);
(2) Coating UV composite laser paint on the bottom coating, leveling by a far infrared oven, and forming a UV coating with the thickness of 6 mu m on the surface of the bottom coating;
(3) The UV coating and the BOPP seamless laser film are subjected to die pressing and compounding, wherein the thickness of the BOPP seamless laser film is 24 mu m, and the BOPP seamless laser film is cured by an LED-UV curing lamp, wherein an ultraviolet light source is 200-400nm, so that a paper film composite material is formed;
(4) Stripping a BOPP seamless laser film from the paper film composite material on a stripping machine, wherein holographic information is printed on the BOPP seamless laser film, the information on the BOPP seamless laser film is copied onto a UV coating, and an information layer is formed on the UV coating to obtain the stripped paper film composite material;
(5) And (3) positioning and cutting the peeled paper film composite material on a precise positioning transverse cutting machine according to the printing layout of the printing stock to obtain the precise positioning UV laser transfer paper.
Comparative example 1
A manufacturing process of UV laser transfer paper with accurate positioning comprises the following steps:
(1) Coating a water-based coating on the white cardboard, wherein the gram weight of the white cardboard is 215g/m 2 Drying the paper by a far infrared oven to form a base paper with the gram weight of 5g/m 2 The undercoat layer of (a);
(2) Coating UV composite laser paint on the bottom coating, leveling by a far infrared oven, and forming a UV coating with the thickness of 5.5 mu m on the surface of the bottom coating;
(3) The UV coating and the BOPP seamless laser film are subjected to die pressing and compounding, wherein the thickness of the BOPP seamless laser film is 18 mu m, and the BOPP seamless laser film is dried and cured to form a paper film composite material;
(4) Peeling a BOPP (biaxially-oriented polypropylene) seamless laser film from the paper film composite material on a peeling machine, printing holographic information on the BOPP seamless laser film, copying the information on the BOPP seamless laser film onto a UV (ultraviolet) coating, and forming an information layer on the UV coating to obtain the peeled paper film composite material;
(5) And (3) positioning and cutting the peeled paper film composite material on a precise positioning transverse cutting machine according to the printing layout of the printing stock to obtain the precise positioning UV laser transfer paper.
Comparative example 2
A manufacturing process of UV laser transfer paper with accurate positioning comprises the following steps:
(1) Coating a water-based coating on the coated paper, wherein the gram weight of the coated paper is 215g/m 2 Drying the paper by a far infrared oven to form a base paper with the gram weight of 5g/m 2 A base coat layer of (1);
(2) Coating UV composite laser paint on the bottom coating, leveling by a far infrared oven, and forming a UV coating with the thickness of 5.5 mu m on the surface of the bottom coating;
(3) The UV coating and the BOPP seamless laser film are subjected to die pressing and compounding, wherein the thickness of the BOPP seamless laser film is 18 mu m, and the BOPP seamless laser film is cured by an LED-UV curing lamp, wherein the ultraviolet light source is 350nm, so that a paper film composite material is formed;
(4) Peeling a BOPP (biaxially-oriented polypropylene) seamless laser film from the paper film composite material on a peeling machine, printing holographic information on the BOPP seamless laser film, copying the information on the BOPP seamless laser film onto a UV (ultraviolet) coating, and forming an information layer on the UV coating to obtain the peeled paper film composite material;
(5) And (3) positioning and cutting the peeled paper film composite material on a precise positioning transverse cutting machine according to the printing layout of the printing stock to obtain the precise positioning UV laser transfer paper.
Comparative example 3
A manufacturing process of UV laser transfer paper with accurate positioning comprises the following steps:
(1) Water-based paint is coated on the glass card paper, and the glass cardThe grammage of the paper is 215g/m 2 Drying the paper by a far infrared oven to form a base paper with the gram weight of 5g/m 2 A base coat layer of (1);
(2) Coating UV composite laser paint on the bottom coating, leveling by a far infrared oven, and forming a UV coating with the thickness of 5.5 mu m on the surface of the bottom coating;
(3) The UV coating and the BOPP seamless laser film are subjected to die pressing and compounding, wherein the thickness of the BOPP seamless laser film is 18 mu m, and the BOPP seamless laser film is cured by an LED-UV curing lamp, wherein the ultraviolet light source is 350nm, so that a paper film composite material is formed;
(4) Stripping a BOPP seamless laser film from the paper film composite material on a stripping machine, wherein holographic information is printed on the BOPP seamless laser film, the information on the BOPP seamless laser film is copied onto a UV coating, and an information layer is formed on the UV coating to obtain the stripped paper film composite material;
(5) And (3) positioning and cutting the peeled paper film composite material on a precise positioning transverse cutting machine according to the printing layout of the printing stock to obtain the precise positioning UV laser transfer paper.
The waterborne coating model used in the examples and comparative examples was Surcoat E, available from McCo, USA; the UV laser composite coating is PT2006K, is purchased from Shanghai Weikai chemical Co., ltd, and has the viscosity of 20-25s.
The accurate positioning UV laser transfer paper prepared in the examples 1 to 5 and the comparative examples 1 to 3 is subjected to related performance tests, and the test results are as follows:
and (3) testing an image-text deviation value: the image-text deviation values of the accurately positioned UV laser transfer paper in the embodiments 1-5 and the comparative examples 1-3 are measured, the error between the image-text of the accurately positioned UV laser transfer paper and the image-text to be presented is measured in the 500mm direction of the UV laser transfer paper, and the test results are shown in Table 1:
table 1 accurate positioning UV laser transfer paper graphic deviation value
From the test results in table 1, it can be seen that the deviation of the positioning graphics on the accurate positioning UV laser transfer paper prepared in the present invention is very small, and the requirement of accurate positioning can be met.
Example 6
The embodiment provides a coating and molding device which can meet the requirements of coating and molding processes for preparing a paper film composite material.
Referring to fig. 2-6, a coating and molding device includes a roll paper replacing module 1 and a coating module 2, the roll paper replacing module 1 includes a fixing module 101 and a roll paper rod 102, wherein there are several roll paper rods 102, the roll paper rod 102 is mounted on the fixing module 101, when the fixing module 101 moves downward, the fixing module 101 and a rack 4 are relatively fixed, the coating module 2 includes a pressing block 201, a moving device 202, an applicator 203 and a pressing block 204, the applicator 203 is mounted on the pressing block 201, the pressing block 201 is connected with the moving device 202, and the moving device 202 can move the pressing block 201 up and down to change the distance between the pressing block 201 and the pressing block 204.
The roll paper (coiled continuous base paper) is placed on the roll paper rod 102, the fixing module 101 is moved downwards by the weight of the roll paper, the fixing module 101 is in contact with the rack 4, the fixing module 101 is further relatively fixed with the rack 4, the used roll paper sleeve can be taken down from the rest roll paper rods 102 at the moment and then replaced by new roll paper, the used roll paper is continuously reduced, the pressure on the roll paper rod 102 is gradually reduced, the fixing module 101 is gradually lifted and reset until the fixing module 101 is separated from the rack 4, the fixing module 101 is recovered to be a free end at the moment, when the finished roll paper finishes one roll paper every time and a finished roll paper needs to be taken down for a short time, the head end of the new roll paper is manually adhered to the surface of the used roll paper through an adhesive during the short stop, the old roll paper is cut through a blade, and the new roll paper enters the device along with the old roll paper after being opened again.
The paper fed from the paper winding rod 102 enters the coating module 2, the paper is jacked up and straightened by the pressing block 204, the position of the extrusion block 201 is adjusted by the moving device 202, the coating liquid flows out from the applicator 203 and is uniformly coated on the paper along the extrusion block 201 to form a coating layer, and the moving device 202 is adjusted according to the requirement.
According to the invention, the plurality of roll paper rods 102 are replaced alternately, so that old roll paper can be replaced in time when the roll paper is about to be used up, meanwhile, the roll paper rods 102 are fixed or movable by utilizing the gravity change of the roll paper, the head end of new roll paper is adhered to the surface of the roll paper in use through an adhesive during a short halt period, then the old roll paper is cut by the blade, and after the roll paper is opened again, the new roll paper enters the device along with the old roll paper, so that the new roll paper does not need to be wound in the device again, the defect that the roll paper needs to be replaced by stopping for a long time originally is solved, the working efficiency is greatly increased, meanwhile, the thickness of the coating can be adjusted by utilizing the moving device 202, and different requirements of production are facilitated.
In addition, when the magnetic-powder winding device is implemented, one end of the winding rod is provided with a magnetic-powder brake for keeping the winding tension.
Further, for the roll paper replacing module 1, the roll paper replacing module 1 further includes a base 103, a rotating shaft 104 is mounted on the base 103, the rotating shaft 104 is rotatably engaged with the base 103, a rotating frame rod 105 is disposed on the rotating shaft 104, displacement holes 106 are disposed at both ends of the rotating frame rod 105, the fixing module 101 is disposed in the displacement holes 106, the fixing module 101 includes a sliding block 1011, a limit buckle 1012 and a limit baffle 1013, the sliding block 1011 slides in the displacement hole 106, the limit buckle 1012 is disposed at one side of the sliding block 1011, the limit baffle 1013 is disposed at the other side of the sliding block 1011, a sliding rod 1011 penetrates through the sliding block, the sliding rod 107 is disposed in the displacement hole 106, a spring 108 is wound on the sliding rod 107, one end of the spring 108 is fixedly connected to the sliding block 1011, the other end of the spring 108 is fixedly connected to the bottom end of the displacement hole 106, the base 103 is mounted at one side of the frame 4, a hole 401 is disposed on the frame 4, and the limit buckle 1012 can enter the hole 401.
The roll paper rod 102 is divided into two upper and lower roll paper rods, after new roll paper is placed on the roll paper rod 102 below, the roll paper rod 102 is rotated to close the roll paper rod 102 and the limit baffle 1013, when the roll paper on the roll paper rod 102 above is nearly used up, the roll paper rod 102 below is pulled by hand to rotate the rotating shaft 104 around the rotating hole central axis of the base station 103, the roll paper below is rotated to the upper side, at the moment, the sliding block 1011 moves downwards along the sliding rod 107 in the displacement hole 106 due to the self weight of the roll paper, the spring 108 is compressed, at the moment, the limit buckle 1012 enters the hole 401 to prevent the rotating shaft 104 from rotating again, at the moment, the original used roll paper is changed after rotating to the lower side, when the new roll paper is used to the end, the weight of the roll paper is reduced, the pressure on the roll paper rod 102 is reduced, at the moment, the elasticity of the spring 108 is released, the sliding block 1011 is reset to the topmost end, at the moment, the limit is released, the rotating shaft 104 is restored to the free state, and the rotating shaft 104 is rotated to replace the new roll paper to enter the work.
In addition, when specifically using, can also set up displacement sensor on rotatory hack lever 105, be used for detecting the displacement distance of sliding block 1011, after the displacement distance of sliding block 1011 reaches the setting value, displacement sensor sends out the police dispatch newspaper, has reminded the staff to change.
According to the invention, the self gravity of the roll paper is utilized, so that the replaced roll paper moves downwards into the hole 401 through the gravity, the rotation of the rotating shaft 104 is limited, and the phenomenon that the roll paper is scattered and is disordered when entering a subsequent working space due to the rotation of the rotating shaft 104 during working is prevented.
Further, for the above roll paper lever 102, one end of the roll paper lever 102 is attached to the limit baffle 1013, the other end of the roll paper lever 102 is rotationally matched with the second limit baffle 109, one end of the second limit baffle 109 is provided with the second sliding block 110, the roll paper replacement module 1 further includes a second rotating frame rod 112, two ends of the second rotating frame rod 112 are both provided with the second displacement hole 111, the second sliding block 110 is disposed in the second displacement hole 111, the second rotating frame rod 112 is provided with the second rotating shaft 113, the second rotating shaft 113 passes through the base station 103, the other end of the second rotating shaft 113 is provided with the ratchet 114, the frame 4 is provided with a limit hole 402, the limit hole 402 is provided with the pawl 403 and the limit spring 404, one end of the pawl 403 is connected with the push switch, the limit spring 404 is mounted on the push switch, and the limit spring 404 pushes the push switch towards the ratchet 114 all the time.
When the used roll paper rotates to the lower side around the rotating shaft 104, the roll paper rod 102 is rotated, the roll paper rod 102 rotates to the position perpendicular to the second limit baffle 109 around the hinge joint of the roll paper rod 102 and the second limit baffle 109, at this time, the roll paper rod 102 is separated from the limit baffle 1013, the old roll paper on the roll paper rod 102 is taken down, the new roll paper is put on the roll paper rod 102 again, the roll paper rod 102 rotates reversely around the hinge joint until the new roll paper is attached and fixed with the limit baffle 1013, after the replaced roll paper rod 102 rotates to the upper side, the roll paper rod 102 is pressed down by gravity, because the roll paper rod 102 is attached and fixed with the limit baffle 1013, the limit baffle 1013 and the second limit baffle 109 move downward along with the roll paper rod 102, the second slide block 110 moves downward along with the second limit baffle 109 along the second displacement hole 111, when the second rotating shaft 113 rotates, the ratchet 114 rotates along with the second rotating shaft 113, when the ratchet 114 rotates, the push switch is pushed, the limit spring 403 completely enters the limit switch 402, the limit spring 404 is compressed at this time, the pawl pushes the limit switch 401 to move downward, and then the pawl pushes the limit switch 401 to release the pawl to move along with the spring, and the spring 114, and pushes the pawl to release the limit switch 401.
In addition, in practical application, because the coating module 2 pulls the roll paper on the roll paper rod 102, the rotating shaft 104 has a rotating trend, after the limit buckle 1012 is separated from the hole 401, the roll paper rod 102 is pulled to have a trend of moving towards the roll paper moving direction, and the ratchet wheel 114 is fixed by the pawl 403 to prevent the roll paper rod 102 from moving towards the roll paper moving direction.
The invention can make the roll paper rod 102 separate from the limit baffle 1013 after rotating to the lower part by rotating the roll paper rod 102 and the second limit baffle 109, thereby facilitating the replacement of the old roll paper on the roll paper rod 102, improving the working efficiency, and simultaneously, the ratchet wheel 114 and the pawl 403 can only make the second rotating shaft 113 rotate in one direction, thus preventing the roll paper rod 102 from being pulled by the pulling force to cause the rotation of the rotating shaft 104 and the loose bottom paper to cause the disordered printing after the weight of the old roll paper on the roll paper rod 102 is reduced.
Further, for the coating module 2, the coating module 2 further includes a box 205, the box 205 is fixedly connected to the frame 4, the box 205 is provided with a through operation hole 206, the box 205 is internally provided with a plurality of sets of rollers 207 for flattening the entering base paper, a pressing block 204 and a squeezing block 201 are arranged beside the rollers 207, the pressing block 204 is vertically aligned with the squeezing block 201, the squeezing block 201 is provided with the applicator 203, the applicator 203 is connected with a hose, the other end of the hose is connected with a coating liquid tank, the box 205 is also internally provided with a small roller 208 for changing the angle of the base paper leaving the box 205, one end of the squeezing block 201 is provided with a limit boss 2021, the limit boss 2021 is provided with a threaded hole 2022, the threaded hole 2022 is internally provided with a screw rod 3, the frame 4 is provided with a movable hole 405, two sides of the limit boss 2021 are tightly attached to two sides of the movable hole 405, the screw rod 2023 passes through the upper and lower ends of the movable hole 405, and one end of the 2023 is provided with a rotary handle 2024.
The paper separated from the roll paper replacing module 1 enters the box 205 from the operation hole 206, the base paper is enabled to be flattened through the roller 207 by tensioning the base paper, then the base paper is jacked upwards by the abutting block 204, the screw rod 2023 is enabled to rotate by rotating the rotating handle 2024, as the screw rod 2023 is in threaded fit with the extrusion block 201, and the extrusion block 201 is limited by the movable hole 405, so that the extrusion block 201 moves up and down, the distance between the extrusion block 201 and the abutting block 204 is further changed, the coating liquid in the coating liquid box is conveyed to the applicator 203 through the hose, the coating liquid flows out to the extrusion block 201 through the applicator 203, the coating liquid flows to the paper along the extrusion block 201, the base paper is coated and covered, and the coated base paper leaves the box 205 after the movement angle of the coated base paper is changed through the small-sized roller 208.
According to the invention, the up-and-down movement of the extrusion block 201 is controlled by the screw 2023, so that the distance between the extrusion block 201 and the pressing block 204 is changed, the smearing liquid flowing out of the smearing device 203 is smeared on the base paper through the extrusion block 201, and the smearing liquid covering thickness is also changed because the distance between the extrusion block 201 and the pressing block 204 is changed.
Further, for the above frame 4, one side of the frame 4 is provided with a die module 3, the die module 3 includes multiple sets of squeeze rollers 301, each set of squeeze rollers 301 includes an upper squeeze roller 3011 and a lower squeeze roller 3012, the upper squeeze roller 3011 and the lower squeeze roller 3012 are both provided with a rotating shaft 302 and are coaxial with the rotating shaft 302, and the die module 3 is provided with a collection reel 5.
After the coated base paper leaves from the coating module 2, the base paper is solidified and enters the die module 3, another raw material film also enters the die module 3, the raw material film and the base paper simultaneously enter a plurality of groups of extrusion rollers 301, the raw material film and the base paper are extruded for a plurality of times by the upper extrusion roller 3011 and the lower extrusion roller 3012 to form a paper film composite material, and the prepared paper film composite material is rolled into finished roll paper by the collecting reel 5.
In specific application, the raw material film can be a UV laser film.
Further, for the above-mentioned frame 4, an infrared drying box 6 is arranged above the frame 4, a plurality of groups of stretching rollers 601 are arranged in the infrared drying box 6, and a discharge hole is formed in a box body on one side of the infrared drying box 6.
The base paper processed by the coating module 2 enters the infrared drying box 6, and is straightened by the plurality of groups of stretching rollers 601 and simultaneously surrounded in the infrared drying box 6, so that the curing of the coating liquid is more thorough.
Further, in the above-mentioned frame 4, a partition 406 is installed on the frame 4, the roll paper replacing module 1 and the coating module 2 are installed on the upper portion of the partition 406, a raw material winding rod 407 is installed on the lower portion of the partition 406, and a discharge port is opened on the frame 4 to allow the raw material on the raw material winding rod 407 to exit from the discharge port.
Place the raw materials membrane on raw materials winding stem 407, when specifically applying in addition, module 1 is changed to the stock form can be referred to raw materials winding stem 407, has been used for can in time changing the raw materials membrane.
Further, for the above-mentioned frame 4, a plurality of rollers 408 are arranged on the frame 4.
The working principle is as follows: when the roll paper is used, when old roll paper is about to run out, the weight of the roll paper is reduced, the elastic force of the spring 108 is released, the sliding block 1011 is reset to the topmost end, the limit of the fixing module 101 is released, the ratchet wheel 114 is fixed through the pawl 403 at the moment, the roll paper rod 102 is prevented from moving towards the roll paper moving direction, when the finished roll paper finishes one roll paper every time, a short halt is needed for taking off the finished roll paper, the head end of new roll paper is adhered to the surface of the roll paper in use through an adhesive by manpower during the short halt, the old roll paper is cut off through a blade, at the moment, the roll paper rotating shaft 104 is rotated, the roll paper rod 102 provided with the new roll paper is rotated to the upper part, at the moment, the sliding block 1011 moves downwards along the sliding rod 107 in the displacement hole 106 due to the self weight of the new roll paper, the spring 108 is compressed, at the moment, the limit buckle 1012 enters the hole 401, and the roll paper rod 102 cannot rotate any more, at this time, the original used roll paper rotates to the lower part, the roll paper rod 102 is rotated to make the roll paper rod 102 rotate to be vertical to the second limit baffle 109 around the hinged position of the roll paper rod 102 and the second limit baffle 109, at this time, the roll paper rod 102 is separated from the limit baffle 1013, the old roll paper on the roll paper rod 102 is taken down, a new roll paper is put on the roll paper rod 102 again, the roll paper rod 102 rotates reversely around the hinged position until the roll paper rod is jointed and fixed with the limit baffle 1013, the bottom paper in use enters the coating module 2 at this time, the bottom paper is leveled by the roller 207, the pressure block 204 is pushed up, the screw rod 2023 rotates by rotating the handle 2024 to make the extrusion block 201 move up and down to change the distance between the extrusion block 201 and the pressure block 204, the coating liquid flows to the coating block 201 through the coating device 203 and then flows to the coating device, the coated bottom paper enters the infrared drying box 6 for drying, then passes through a plurality of groups of extrusion rollers 301 to extrude and form the raw material film and the base paper.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A manufacturing process of UV laser transfer paper with accurate positioning is characterized by comprising the following steps:
step one, coating a water-based paint on base paper, and drying the base paper by a far infrared oven to form a bottom coating on the surface of the base paper;
step two, coating UV composite laser paint on the bottom coating in the step one, leveling by a far infrared oven, and forming a UV coating on the surface of the bottom coating;
step three, the UV coating in the step two and a BOPP seamless laser film are subjected to die pressing and compounding, and a paper film composite material is formed after the UV coating is cured by an ultraviolet lamp;
step four, stripping the BOPP seamless laser film from the paper film composite material obtained in the step three on a stripping machine, copying information on the BOPP seamless laser film onto the UV coating, and forming an information layer on the UV coating to obtain the stripped paper film composite material;
and step five, positioning and cutting the paper film composite material stripped in the step four on a precise positioning transverse cutting machine according to the printing layout of the printing stock to obtain the precise positioning UV laser transfer paper.
2. The process for manufacturing the UV laser transfer paper with the accurate positioning function according to claim 1, wherein in the step one, the middle base paper comprises one of white cardboard, coated paper and glass cardboard; the gram weight of the base coat is 5g/m 2 。
3. The manufacturing process of the UV laser transfer paper with accurate positioning as claimed in claim 1, wherein the thickness of the UV coating in the second step is 4-6 μm.
4. The manufacturing process of the UV laser transfer paper with accurate positioning according to claim 1, wherein the UV lamp in the third step is an LED-UV curing lamp.
5. The manufacturing process of the UV laser transfer paper with accurate positioning function according to claim 1, wherein the thickness of the BOPP seamless laser film in the third step is 15-24 μm.
6. The manufacturing process of the precisely positioned UV laser transfer paper of claim 1, wherein the coating and molding of the paper film composite material uses a coating and molding device, the coating and molding device comprises a roll paper replacing module and a coating module, the roll paper replacing module comprises a fixed module and a roll paper rod, wherein the roll paper rod is provided with a plurality of roll paper rods, the roll paper rod is installed on the fixed module, the fixed module is fixed relative to the frame when the fixed module moves downwards, the coating module comprises a squeezing block, a moving device, an applicator and a pressing block, the applicator is installed on the squeezing block, the squeezing block is connected with a moving device, and the moving device can enable the squeezing block to move upwards and downwards to change the distance between the squeezing block and the pressing block; the stock form replacement module still includes the base station, install the rotation axis on the base station, the rotation axis with base station normal running fit, be provided with rotatory hack lever on the rotation axis, the both ends of rotatory hack lever all are provided with the displacement hole, fixed module sets up in the displacement hole, fixed module includes sliding block, spacing buckle and limit baffle, the sliding block is in slide in the displacement hole, limit buckle sets up one side of sliding block, limit baffle sets up the opposite side of sliding block, it has the slide bar to run through on the sliding block, the slide bar sets up in the displacement hole, the winding has the spring on the slide bar, the one end of spring with sliding block fixed connection, the other end of spring with the bottom fixed connection in displacement hole, the base station is installed frame one side, the hole has been seted up in the frame, spacing buckle can get into in the hole.
7. The manufacturing process of the laser transfer paper with the UV precise positioning function as claimed in claim 6, wherein one end of the roll paper rod is attached to the limiting baffle, the other end of the roll paper rod is in running fit with a second limiting baffle, a second sliding block is arranged at one end of the second limiting baffle, the roll paper replacing module further comprises a second rotating frame rod, second displacement holes are formed in two ends of the second rotating frame rod, the second sliding block is arranged in the second displacement holes, a second rotating shaft is arranged on the second rotating frame rod and penetrates through the base platform, a ratchet wheel is arranged at the other end of the second rotating shaft, a limiting hole is formed in the frame, a pawl and a limiting spring are arranged in the limiting hole, one end of the pawl is connected with a push switch, the limiting spring is mounted on the push switch, and the limiting spring pushes the push switch towards the ratchet wheel all the time.
8. The manufacturing process of the laser transfer paper with the UV precise positioning function as claimed in claim 7, wherein the coating module further comprises a box body fixedly connected with the frame, the box body is provided with an operation hole penetrating through the box body, a plurality of sets of rollers are arranged in the box body and used for leveling the entering base paper, a pressing block and an extruding block are arranged beside the rollers, the pressing block is vertically aligned with the extruding block, the applicator is installed on the extruding block, a hose is connected to the applicator, the other end of the hose is connected with an application liquid box, a small roller is further installed in the box body and used for changing the angle of the base paper leaving the box body, one end of the extruding block is provided with a limiting boss, a threaded hole is formed in the limiting boss, a screw rod is arranged in the threaded hole, a movable hole is formed in the frame, two sides of the limiting boss are tightly attached to two sides of the movable hole, the screw rod penetrates through the upper end and the lower end of the movable hole, and a rotating handle is arranged at one end of the screw rod.
9. The precisely-positioned UV laser transfer paper prepared by the process for manufacturing the precisely-positioned UV laser transfer paper disclosed by any one of claims 1 to 8.
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