Composite film and method for making composite film

Abstract

The present invention relates to the field of thin film technology, and more particularly to a composite film and a method for manufacturing the composite film. One composite film comprises: a base film; a composite connecting layer disposed on the surface of the base film; and a protective film disposed on the surface of the connecting layer; wherein a marking area is disposed on the base film, the marking area comprising a marking pattern and a marking hole area matching the marking pattern. The marking hole area 102 and the protective film 3 are cut out by the same tooling tool, and their sizes are completely consistent.

Description

Technical Field

[0001] The invention relates to the technical field of thin films, and in particular to a composite film and a method for manufacturing the composite film. Background Art

[0002] Card-type ID thermal transfer film can usually be used in card-type IDs, bank cards, and certificate production points, such as Hong Kong and Macao Pass, Taiwan Compatriot Card, etc. Specifically, the card body carrying personalized information is composited and heated with the card-type ID thermal transfer film through a special card transfer device, and then the substrate is peeled off, and the transparent optical anti-counterfeiting information layer is directly transferred to the card body, and then a new protective film is composited on the card body. The optical anti-counterfeiting layer is completely consistent with the size of the card surface, which is very consistent and beautiful. The covered anti-counterfeiting information layer cannot be completely peeled off, which plays a role in protecting the printed information in the card body. The biggest feature of this film is that it has strong scratch resistance and the function of protecting card information. It is often used on security cards. In order to accurately position the lamination, a black cursor is generally printed next to the film or at a fixed position for machine recognition. However, the printing cursor and die-cutting position will always be affected by the accuracy of the equipment and the printing accuracy, resulting in errors. The protective film used is attached to the surface of the card body, and is slightly smaller or just right than the surface. If there is an error, it will be very obvious, affecting its appearance and normal use. Similar problems will be encountered when a protective film is pasted on a carrier. The label reading accuracy and the die-cutting accuracy of the protective film will affect the lamination position. Summary of the invention

[0003] Based on the above technical problems, the present invention provides a composite film and a method for making the composite film.

[0004] In one aspect, the present invention provides a composite film, comprising:

[0005] Basement membrane;

[0006] A composite connecting layer is arranged on the surface of the base film;

[0007] At least one protective film, disposed on the surface of the connecting layer;

[0008] Wherein, a logo area is arranged on the base film, and the logo area includes a logo pattern and a logo hole area matching the logo pattern.

[0009] Preferably, the above-mentioned composite film, wherein the protective film includes a corona layer surface and a non-corona layer surface, further includes:

[0010] An information layer is disposed on the surface of the corona layer of the protective film;

[0011] The bonding layer is arranged on the upper end of the information layer.

[0012] Preferably, the above-mentioned composite film further comprises a dielectric layer disposed between the information layer and the adhesive layer.

[0013] Preferably, the above-mentioned composite film further comprises a matte coating layer, which is arranged on the surface of the base film and away from the composite connecting layer.

[0014] On the other hand, the present invention further provides a method for making a composite membrane, which comprises:

[0015] providing a base film;

[0016] Applying glue to the first predetermined surface of the base film;

[0017] The first predetermined layer is compounded with the second predetermined layer of the protective film and then dried and cured.

[0018] Preferably, in the above-mentioned method for manufacturing a composite film, providing a base film specifically comprises:

[0019] providing an initial film;

[0020] Performing corona treatment or chemical treatment on the first surface of the initial film to form the first predetermined layer;

[0021] The second side of the initial film is subjected to a marking process to form the base film.

[0022] Preferably, in the above-mentioned method for manufacturing a composite film, the marking treatment on the second surface of the initial film to form the base film specifically comprises:

[0023] marking the second side of the initial film to form a marking area;

[0024] The marking area is subjected to matte coating to form the base film.

[0025] Preferably, in the above-mentioned method for manufacturing a composite film, the step of composite the first predetermined layer with the second predetermined layer of the protective film and performing a drying and curing treatment specifically comprises:

[0026] Providing a protective base film;

[0027] The marking hole area is subjected to corona treatment on the first surface of the protective base film to form a corona protective base film layer;

[0028] Performing information processing on the corona base film layer to form a coating information layer;

[0029] forming the second predetermined layer according to the second surface of the protective base film;

[0030] The first predetermined layer is compounded with the second predetermined layer of the protective film and then dried and cured.

[0031] Preferably, in the above-mentioned method for manufacturing a composite film, the step of composite the first predetermined layer with the second predetermined layer of the protective film and performing a drying and curing treatment specifically comprises:

[0032] Providing a protective base film;

[0033] The marking hole area is subjected to corona treatment on the first surface of the protective base film to form a corona protective base film layer;

[0034] Performing information processing on the corona base film layer to form a coating information layer;

[0035] forming a pattern layer on the surface of the coated information layer, wherein the pattern layer includes a cursor feature map;

[0036] forming a dielectric layer on the surface of the pattern layer;

[0037] forming the second predetermined layer according to the second surface of the protective base film;

[0038] The first predetermined layer is compounded with the second predetermined layer of the protective film and then dried and cured.

[0039] Compared with the prior art, the advantages of the present invention are:

[0040] When using this type of composite film, the identification distinction actually includes the logo hole area, the remaining logo pattern, and the cutting surface between the logo hole area and the remaining logo pattern. The three features are identified to ensure the accuracy of hot stamping or lamination. In the prior art, identification is achieved only through one logo pattern, and the success rate of recognition of a single black logo pattern depends on the printing quality on the one hand, and on the other hand, it also depends on the recognition ability of the product. If there is a displacement deviation in the logo pattern printing or the position and accuracy of the equipment recognition device are deviated, then the equipment will be wrong, resulting in a decrease in the accuracy of lamination. In this application, the focus of identification is on the cutting surface between the remaining logo patterns. The remaining logo pattern and the logo hole area are only used as auxiliary identification references. The cutting surface between the remaining logo patterns is formed during the operation of the equipment. If the equipment recognition device is displaced, the overall cutting surface will also be displaced. At this time, the two displacement errors cancel each other out. Even if there is a displacement deviation in the pattern printing, it does not affect the overall recognition accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 A schematic diagram of the structure of a composite membrane provided in an embodiment of the present invention;

[0042] Figure 2 A schematic diagram of the structure of a composite membrane provided in an embodiment of the present invention;

[0043] Figure 3 A schematic diagram of a composite membrane application provided in an embodiment of the present invention;

[0044] Figure 4 A schematic diagram of a process for manufacturing a composite membrane provided in an embodiment of the present invention;

[0045] Figure 5 A schematic diagram of a process for manufacturing a composite membrane provided in an embodiment of the present invention;

[0046] Figure 6 The present invention provides a schematic flow chart of a method for manufacturing a composite membrane in an embodiment of the present invention. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] like Figure 1-2 As shown, on the one hand, the present invention provides a composite film, which includes:

[0049] Base film 1; wherein the base film is generally made of PET, PVC, BOPP and other materials, and the base film thickness ranges from 23 to 40 um;

[0050] A composite connection layer 2 is arranged on the surface of the base film 1; wherein the composite connection layer 2 can be formed by a composite adhesive, and the thickness of the composite adhesive layer ranges from 2 to 5 um;

[0051] At least one protective film 3 is disposed on the surface of the connection layer 2. The thickness of the protective film 3 is in the range of 12-30 um; further, if an anti-counterfeiting function is required, an optical microstructure may be formed on the surface of the protective film.

[0052] Wherein, a logo area is provided on the base film 1, and the logo area includes a logo pattern 101, and a logo hole area 102 matching the logo pattern 101. Wherein, the logo hole area 102 can be a rectangle, a square or other special-shaped structure, the color of the logo pattern 101 can be any color, as long as the color can be recognized, the logo hole area 102 is matched with the logo pattern 101, and further, the logo hole area 102 and the logo pattern 101 can be set on both sides of the protective film, or can be set between any two protective films. The position setting of the logo hole area 102 and the logo pattern 101 can be selected according to the equipment reading position or the tooling cutting equipment position, so as to enable the reading setting to be able to read the logo hole area and the logo pattern in a ready manner. It should be noted that the logo hole area 102 and the protective film 3 are cut out by the same tooling tool, and their sizes are exactly the same.

[0053] The above-mentioned composite film is provided with a corresponding marking area on its composite film, and the marking area includes a marking pattern and a marking hole area. In actual use, the composite film roll is installed into the corresponding card thermal transfer device, or the laminating device of the readable marking area. The thermal transfer device or other device first cuts off part of the marking pattern through the tooling die-cutting device by identifying the marking pattern (this cutting is half-cutting, only cutting off the marking image part, and not cutting off the base film). At this time, a cutting interface is formed between the marking hole area and the marking pattern. At the same time of cutting, the protective film is completely cut, and the base film remains intact. The remaining marking pattern matching the marking hole area and the cutting interface between the marking hole area and the remaining marking pattern are continuously read to determine the hot stamping position. After the hot stamping position is determined, the marking hole area and the marking pattern on the composite film are cut through the tooling die-cutting equipment, so that the laminating accuracy can reach zero error during use.

[0054] When using this type of composite film, the identification distinction actually includes the logo hole area, the remaining logo pattern, and the cutting surface between the logo hole area and the remaining logo pattern. The three features are identified to ensure the accuracy of hot stamping or lamination. In the prior art, identification is achieved only through one logo pattern, and the success rate of recognition of a single black logo pattern depends on the printing quality on the one hand, and on the other hand, it also depends on the recognition ability of the product. If there is a displacement deviation in the printing of the logo pattern or the position and accuracy of the equipment recognition device are deviated, then the equipment will be wrong, resulting in a decrease in the accuracy of lamination. In this application, the focus of identification is on the cutting surface between the logo hole area and the remaining logo pattern. The remaining logo pattern and the logo hole area are only used as auxiliary identification references. The cutting surface between the remaining logo patterns is formed during the operation of the equipment. If the equipment recognition device is displaced, the overall cutting surface will also be displaced. At this time, the two displacement errors cancel each other out. Even if there is a displacement deviation in the pattern printing, it does not affect the overall recognition accuracy.

[0055] As a further preferred embodiment, the above-mentioned composite film, wherein the protective film includes a corona layer surface and a non-corona layer surface, further includes:

[0056] The information layer 4 is arranged on the surface of the corona layer of the protective film 3; wherein the information layer can generally be acrylic resin or reactive polyurethane resin, and the thickness of the information layer is 1-2 um.

[0057] The adhesive layer 5 is arranged on the upper end of the information layer 5. The thickness of the adhesive layer is 1.5-10 um. The adhesive layer is arranged on the surface of the information layer to improve the stability of the information layer and also improve the adhesive force of the protective film.

[0058] In this embodiment, an information layer is recorded on the protective film to avoid the need to print twice during the thermal sublimation or hot melt printing process.

[0059] In the prior art, it is necessary to first print personalized information on the card body and then perform the lamination operation. Inaccurate positioning in any of these two steps will seriously affect the quality of the ID card. In this embodiment, combined with the above-mentioned technical solution, personalized information can be accurately covered on the blank card body, greatly improving the efficiency and quality of card making.

[0060] As a further preferred embodiment, the composite film further comprises a dielectric layer 6 disposed between the information layer 4 and the bonding layer 5. Furthermore, the dielectric layer 6 can improve the reflectivity of the pattern.

[0061] Preferably, the above-mentioned composite film further includes a matte coating layer 7 , which is arranged on the surface of the base film 1 and away from the composite connecting layer 2 .

[0062] Furthermore, a marking line 4 is provided on the base film, and the marking line is used to visually observe whether the cutting position of the protective film is accurate.

[0063] Here is a specific application method:

[0064] A composite film that can improve the lamination accuracy is in a roll-like structure, such as Figure 3 As shown, a roll of composite film includes a base film 11, at least one protective film 12, and a marking area is arranged on the base film, the marking area includes a logo pattern 13, and a logo hole area 14 and a marking line 15 matching the logo pattern, wherein the number of the logo patterns 13, the logo hole area 14 and the marking line 15 matches each other, and the number is not less than the number of the protective films 12.

[0065] In actual use, the composite film with a roll structure is installed in the corresponding application equipment (such as a thermal sublimation or hot melt printer), the base film is displaced along the film moving direction, and the tooling die-cutting equipment uses a full-cut method to cut off part of the logo pattern 13 in the logo hole area 14 along the film moving direction to form a cutting surface between the logo hole area and the remaining logo pattern. At the same time, the protective film 12 is cut off by the tooling die-cutting equipment in a half-cut manner. Because the protective film 12 and the logo hole area 14 are formed by a universal tooling die-cutting equipment, the positions of the protective film 12 and the logo hole area 14 are relatively fixed and presented after die-cutting by the tool. In this way, zero error is ensured in the other position. Among them, the tool of the tooling die-cutting equipment is required to have a height difference during production. In this way, when die-cutting, the tool includes at least two different heights of full cutting and half cutting. In the full-cut state, the base film and the protective film need to be cut through. In the half-cut state, only the protective film is cut off, and the base film remains intact, and the film moves in the direction of the arrow in the above figure. After the film direction is fixed, the positions of the protective film 12 and the mark hole area 14 are relatively fixed, requiring the mark hole area 14 to be in the front and leaving part of the mark pattern 13 behind, so that the photoelectric head of the equipment can accurately read the cutting surface between the mark hole area and the remaining mark pattern. The mark 15 is used to visually observe whether the die-cutting position of the protective film is accurate.

[0066] The high-precision composite film roll can be used with a card thermal transfer device or a label-readable laminating device to transfer the high-precision protective film onto a carrier. The thermal transfer device determines the hot stamping position by identifying the cursor next to the mark hole area 14, and the holes on the protective film and the protective film are cut by a tooling die, and the positions are completely consistent, so the cursor can be read during use, and the laminating accuracy can reach zero error.

[0067] Embodiment 2

[0068] like Figure 4 As shown, on the other hand, the present invention further provides a method for making a composite membrane, which comprises:

[0069] Step S110, providing a base film;

[0070] Step S120, performing composite adhesive treatment on the first predetermined surface of the base film;

[0071] Step S130, compounding the first predetermined layer of the base film and the second predetermined layer of the protective film and performing drying and curing treatment. After the drying treatment, the composite adhesive is cured, and the composite adhesive in the cured state completely compounds the first predetermined layer of the base film and the second predetermined layer of the protective film.

[0072] As a further preferred embodiment, in the above-mentioned method for manufacturing a composite film, step S110, providing a base film, specifically comprises:

[0073] Step S11011, providing an initial film; wherein the initial film can be a PET / PVC film, and the thickness of the initial film is 20-38 um.

[0074] Step S11012, performing corona treatment or chemical treatment on the first surface of the initial film to form the first predetermined layer; performing corona treatment or chemical treatment on the first surface of the initial film to increase the surface energy of the first surface of the initial film and adjust the polarity, so that the first surface of the initial film has better adhesion.

[0075] Step S11013, marking the second surface of the initial film to form the base film.

[0076] Preferably, in the above-mentioned method for manufacturing a composite film, step S11013, marking the second surface of the initial film to form the base film, specifically comprises:

[0077] Step S110131, marking the second surface of the initial film to form a marking area;

[0078] Step S110132, applying matte coating to the marking area to form the base film.

[0079] like Figure 5 As shown, as a further preferred embodiment, the above-mentioned method for making a composite film, wherein step S130, compounding the first predetermined layer with the second predetermined layer of the protective film and performing a drying and curing treatment specifically comprises:

[0080] Step S13011, providing a protective base film;

[0081] Step S13012, performing corona treatment on the first surface of the protective base film in the marking hole area to form a corona protective base film layer;

[0082] Step S13013, performing information processing on the corona base film layer to form a coating information layer;

[0083] Step S13014, forming the second predetermined layer according to the second surface of the protective base film;

[0084] Step S13015, compounding the first predetermined layer with the second predetermined layer of the protective film and performing drying and curing treatment.

[0085] like Figure 6 As shown, as a further preferred embodiment, the above-mentioned method for making a composite film, wherein step S130, compounding the first predetermined layer with the second predetermined layer of the protective film and performing a drying and curing treatment specifically comprises:

[0086] Step S13021, providing a protective base film;

[0087] Step S13022, performing corona treatment on the first surface of the protective base film in the marking hole area to form a corona protective base film layer;

[0088] Step S13023, performing information processing on the corona base film layer to form a coating information layer;

[0089] Step S13024, forming a pattern layer on the surface of the coated information layer, wherein the pattern layer includes a cursor feature map;

[0090] Step S13025, forming a dielectric layer on the surface of the pattern layer;

[0091] Step S13026, forming the second predetermined layer according to the second surface of the protective base film;

[0092] Step S13027, compound the first predetermined layer with the second predetermined layer of the protective film and perform drying and curing treatment.

[0093] One implementation scheme is as follows: a PET / PVC base film is provided, with a thickness of 20-38um, and is subjected to corona treatment or chemical coating treatment to increase its surface energy or surface polarity. A logo pattern is uniformly printed on the other side in gravure or offset flexographic printing, and the logo pattern can be a black cursor (its color can also be selected). In order to prevent the black cursor from being scratched during use, a matte coating can be applied to the surface of the black cursor, or it can be left uncoated.

[0094] Provide 15-35um PET protective film, one side is corona and the other side is non-corona, and the information layer is coated on the corona side. The information layer is generally acrylic resin or reactive polyurethane resin, with a thickness range of 1.0-2.0um. The purpose of coating the information layer is to enhance the bonding force between the protective film and the glue. Glue is coated on the information layer, and the thickness of the adhesive layer is 1.5-10um.

[0095] The composite adhesive is applied on the corona surface or chemically treated surface of the PET / PVC base film, and then composited with the back surface (non-corona surface) of the PET protective film and dried and solidified. At this time, the composite adhesive composites the two layers of film together. When peeling, the composite adhesive remains on the base film.

[0096] Here is another specific implementation:

[0097] Provide a PET base film with a thickness of 20-38um, one side is treated with corona or chemical coating to increase its surface energy or polarity. The other side is coated with matte coating to prevent the film surface from drawing during the production process.

[0098] Provide a PET protective film: thickness 15-35um, one side of the PET protective film is corona treated and the other side is corona-free, and an information layer is coated on the corona surface. The information layer is generally acrylic resin or reactive polyurethane resin, and the thickness range is: 1.0-2.0um; the optical micro-nano pattern (also known as anti-counterfeiting pattern) is transferred to the film by molding, and a recognizable laser cursor is made next to each pattern during molding; then the medium layer is evaporated to improve the reflectivity of the optical micro-nano pattern. A glue layer is coated on the surface of the medium, and the thickness of the adhesive is 1.5-10um.

[0099] Continue to make composite glue on the prepared corona surface or chemically treated surface of the PET base film, and composite and cure it with the non-corona surface of the PET protective film. At this time, the glue is cured and the two layers of film are composited together. Continue to print the black cursor (i.e. the logo pattern) at a fixed position by identifying the laser cursor. At this time, the positions of the black cursor, information layer, and logo pattern of each version are fixed to form the above-mentioned composite film.

[0100] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0101] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A composite film, characterized in that include: Basement membrane; A composite connecting layer is arranged on the surface of the base film; A protective film, disposed on the surface of the composite connecting layer; Wherein, a logo area is provided on the base film, and the logo area includes a logo pattern and a logo hole area matching the logo pattern; The protective film includes a corona layer surface and a non-corona layer surface, and further includes: An information layer is disposed on the surface of the corona layer of the protective film; A bonding layer, arranged on the upper end of the information layer; A matte coating layer is disposed on the surface of the base film and is away from the composite connecting layer.

2. A composite membrane according to claim 1, characterized in that: The invention also includes a medium layer, which is arranged between the information layer and the bonding layer.

3. A method for preparing a composite film according to any one of claims 1 to 2, characterized in that: include, Providing a base film, wherein a logo area is provided on the base film, wherein the logo area includes a logo pattern and a logo hole area matching the logo pattern; Applying glue to the first predetermined surface of the base film; The first predetermined layer is compounded with the second predetermined layer of the protective film and then dried and cured.

4. The method for preparing a composite membrane according to claim 3, characterized in that: Providing a base film specifically includes: providing an initial film; Performing corona treatment or chemical treatment on the first surface of the initial film to form the first predetermined layer; The second side of the initial film is subjected to a marking process to form the base film.

5. The method for preparing a composite film according to claim 4, characterized in that: The marking process for the second surface of the initial film to form the base film specifically includes: marking the second side of the initial film to form a marking area; The marking area is subjected to matte coating to form the base film.

6. The method for making a composite film according to claim 3, characterized in that: Compounding the first predetermined layer with the second predetermined layer of the protective film and performing drying and curing treatment specifically includes: Providing a protective base film; The marking hole area is subjected to corona treatment on the first surface of the protective base film to form a corona protective base film layer; Performing information processing on the corona protection base film layer to form a coating information layer; forming the second predetermined layer according to the second surface of the protective base film; The first predetermined layer and the second predetermined layer of the protective film are composited and can be peeled off later, and the composite is glued on the base film.

7. The method for making a composite membrane according to claim 3, characterized in that: Compounding the first predetermined layer with the second predetermined layer of the protective film and performing drying and curing treatment specifically includes: Providing a protective base film; The marking hole area is subjected to corona treatment on the first surface of the protective base film to form a corona protective base film layer; Performing information processing on the corona protection base film layer to form a coating information layer; forming a pattern layer on the surface of the coated information layer, wherein the pattern layer includes a cursor feature map; forming a dielectric layer on the surface of the pattern layer; forming the second predetermined layer according to the second surface of the protective base film; The first predetermined layer is compounded with the second predetermined layer of the protective film and then dried and cured.

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