KR102665921B1 - Flexible thin-plate type information printing data card with curl prevention function and its manufacturing method - Google Patents

Abstract

The present invention relates to a flexible thin-plate information printing data card with a curl prevention function and a method of manufacturing the same.
Accordingly, the technical gist of the present invention is to print information comprehensively across various industries, including membership cards, access cards for apartments and facilities, parking cards, election identification cards, and entrance cards for water parks and amusement parks, etc. (separately This relates to a data card (where recognition target information is printed through information input printing), and is a PP film coated with a thermal agent on PET film (coated with white ink for shielding) with excellent environmental resistance, heat resistance, durability, and mechanical strength. are laminated with a hot melt adhesive to create a series of data cards for printing, but the PET fill and PP film laminated with a hot melt adhesive (applied in a very small amount) minimize the bond aging time (the amount of hot melt applied is very small, so it has a short dry aging time) ) to delay the solidification of the adhesive layer (to prevent it from being completely hardened and solidified), and in particular, among the physical properties of hot melt adhesives, the bonding agent or component that induces solidification is fundamentally excluded or included only in extremely minimal units. By doing so, the non-solidified physical properties fundamentally eliminate the occurrence of curl in the data card (a phenomenon in which the curled shape is maintained when a bent or curved fabric is wrapped around a core and rolled into a round shape), which is due to the flatness resilience of the data card itself. It is formed to ensure (the force to return to a flat form) and to realize a thinner cross-sectional area (without damaging the print head) compared to thick data cards made of existing PET single films (credit cards with a thickness of about 1 mm, etc.). In particular, it is characterized by greatly improved printability and usability due to the absence of curl phenomenon.

Description

Flexible thin-plate type information printing data card with curl prevention function and its manufacturing method}

The present invention provides comprehensive information printing (separate information input print) across various industries, including membership cards, access cards for apartment complexes and facilities, parking cards, election identification cards, and entrance cards for water parks and amusement parks. This relates to a data card on which recognition target information is printed.

The present invention laminates a PET film (coated with white ink for shielding), which has excellent environmental resistance, heat resistance, durability, and mechanical strength, and a PP film coated with a heat-sensitive agent with a hot melt adhesive to create a series of data cards for printing. , PET fill and PP film laminated with a hot melt adhesive (applied in very small amounts) minimize the bond aging time (short dry aging time due to the very small amount of hot melt applied) and solidify the adhesive layer (to prevent it from completely curing and becoming solid). ) is formed to delay, and in particular, among the physical properties of the hot melt adhesive, the bonding agent is fundamentally excluded from curing agents or components that induce solidification or is included only in extremely minimal units, allowing the non-solidifying properties to be displayed as the curl of the data card. This fundamentally eliminates the occurrence of (a phenomenon in which the rolled shape is maintained when a bent fabric is rolled around a core), which not only ensures the flatness of the data card itself (the force to return to a flat shape), but also ensures that the existing PET Compared to thick data cards made of a single film (such as credit cards with a thickness of about 1 mm), it is formed to realize a thin cross-sectional area (without damaging the printer head), and in particular, printability and usability are greatly improved due to the absence of curl phenomenon. It relates to a flexible thin-plate information printing data card having a curl prevention function and a method of manufacturing the same.

In general, data cards (including smart cards such as general credit cards, various access cards, membership cards, or data cards using a print method for information recognition) are made of transparent or opaque synthetic resins such as PVC, ABS, PC, PETG, and PET. It is a card made by selectively combining sheets and then laminating them. Usually, a protective layer and a printed layer are formed at the bottom, and a printed layer and a protective layer are formed sequentially at the top to form a series of cards.

For example, among data cards, credit cards are manufactured by adding a SIM card, contact IC card, antenna coil, or RF wireless communication circuit, so that they can be used through a card reader or payment device.

In addition, among data cards, data cards for information recognition have specific information printed on the card (or already printed - a barcode or an identification tag with specific character shapes and letters, etc.) to create a unique identification on the card and allow individual identification. The recognition reader allows the owner to check entry/exit recognition when passing through designated entrances of various industries such as apartments, hospitals, schools, offices, factories, amusement parks, golf courses, etc., or when conducting membership management and voter surveys such as elections, statistical algorithms ( It is formed to be used in conjunction with a program).

These conventional data cards (credit cards or data cards for information recognition) are produced by performing specific processing (processing to ensure printability, etc.) on multiple base papers, laminating them, and then cutting them to card specifications. will be performed.

However, among conventional data cards, credit cards are usually manufactured using a single PET sheet or double laminating them, so the card itself is thick (about 1mm: electronic elements are incorporated to prevent internal and external inserts such as SIM cards from being damaged). As it has hard physical properties, problems arise that make it unsuitable when used as a data card for information recognition (a thin and light form such as a simple membership card or access card).

In addition, existing data cards for information recognition also typically have the same thickness and hard physical properties as credit cards, making it inconvenient to keep them when used for simple information recognition.

For example, in the case of a data information recognition card as a screen golf course member access card, the access card only needs to be able to identify the member, and only a specific barcode or membership number needs to be printed, but the membership card issued for this purpose is too thick and hard in material. It is not easy to print (cards that are too thick can damage the head of the printer that prints to recognize specific information), so difficulties continue to arise from card issuance to possession and handling.

In addition, the lamination method used in existing card production involves joining through dry laminate using a binder. The binder at this time is an adhesive for solidification, and other than the hardener, solidification (hardening) inducing substances such as isocyanate are included. Since it contains a significant amount, after bonding is completed, it completely solidifies and the card itself has no elastic restoration force.

When these conventional data cards are bent by an external force (such as being crushed or bent by something), they are completely bent and are damaged or damaged.

In addition, among the existing data cards, cards made in a thin form are cut by wrapping the laminated fabric around the core and then unwinding it again. Curls are generated in the card fabric with strong joint solidification, making it difficult to print information or handle. Not only does this occur, but the reverse unfolding process must be performed for a considerable amount of time to resolve this problem, resulting in a significant decrease in productivity and economic efficiency.

1. Korea Patent Registration No. 10-2039337 (registered on October 28, 2019)

The present invention is intended to solve the above-mentioned problems, and its technical gist is to use a PET film (coated with white ink for shielding), which has excellent environmental resistance, heat resistance, durability, and mechanical strength, and a PP film coated with a heat sensitive agent as a hot melt adhesive. PET fill and PP film laminated with a hot melt adhesive (applied in a very small amount) minimize the bond aging time (a very small amount of hot melt is applied, so it has a short dry aging time) to create a series of data cards for printing. It is formed to delay solidification (to prevent it from completely hardening into a solid state), and in particular, among the physical properties of the hot melt adhesive, the bonding agent is fundamentally excluded from the curing agent or components that induce solidification or is included only in extremely minimal units. The purpose is to provide solidification properties to fundamentally eliminate the occurrence of curl in data cards (a phenomenon in which the curled shape is maintained when bent or curved fabric is wrapped around a core and rolled up).

This invention not only ensures the flatness recovery force (force to return to a flat form) of the data card itself, but also realizes a thinner cross-sectional area compared to the existing thick data card made of a single PET film (such as a credit card with a thickness of about 1 mm). The purpose is to provide greatly improved printability and usability by eliminating the curl phenomenon.

In order to achieve this purpose, the present invention is formed so that the PET film 100 and the PP film 200 are bonded and laminated by a hot melt adhesive 300.

Accordingly, the PET film 100 is a transparent material, has a thickness of 0.188 mm, and is formed by coating white ink on one side of the transparent surface to ensure shielding power (the side that makes the printing visible), and the hot melt adhesive 300 is The thickness of the bonding layer is 0.01 to 0.015 mm, and compared to the thermoplastic resin (solid agent such as urethane prepolymer), which is the main material for bonding, the isocyanate group or the component with physical properties equivalent to the isocyanate group (component that induces hardening, solidification, or solidification) as the curing agent is used. Excluded or at least 0.1% ~ maximum 10% (this is to form a bonding layer in a liquefied state by applying heat, so that the viscosity remains in a sticky viscous or liquefied state later even when bonded to the PP film that has been laminated. Existing adhesives are thermoplastic The resin content is more than 50% higher than that of the solvent, so when hardened, the viscosity solidifies and becomes hard) and is applied to the other side of the surface of the PET film (the opposite side coated with white ink) to form a bonding layer, and the PP film ( 200) has a thickness of 0.080 mm, and is formed by coating one surface with a heat transfer agent and then bonding it on a bonding layer formed by a hot melt adhesive to laminate it with the PET film 100.

Meanwhile, the data card manufacturing method according to the present invention includes a white coating step (S100) of coating white ink on one side of the base paper of the PET film 100 to provide shielding power; A hot melt adhesion step (S200) of applying a hot melt adhesive 300 to a set thickness on the other side of the PET film 100 opposite to the white ink coating; A lamination step (S300) of manufacturing a laminated fabric by bonding the PP film 200 coated with the dispersion heat transfer agent onto the bonding layer formed by the hot melt adhesive 300; A maturation step (S400) in which the laminated PET film 100 and PP film 200 are aged for a time set by the hot melt adhesive 300; A cutting step (S500) of cutting the laminated fabric according to the specifications requested by the orderer; It is composed and accomplished.

In this way, the present invention provides information printing (separate information) covering all aspects of various industries, including membership cards, access cards for apartment complexes and facilities, parking cards, election identification cards, and entrance cards for water parks and amusement parks. This relates to a data card (where recognition target information is printed through an input print), which uses a PET film (coated with white ink for shielding), which has excellent environmental resistance, heat resistance, durability, and mechanical strength, and a PP film coated with a heat sensitive agent. A series of data cards for printing are created by laminating with a hot melt adhesive, but the PET fill and PP film laminated with a hot melt adhesive (applied in very small amounts) minimizes the bonding maturation time (the amount of hot melt applied is very small, so it has a short dry maturation time). This has the effect of delaying the solidification of the adhesive layer (preventing it from being completely hardened and solidified).

In the present invention, among the physical properties of the hot melt adhesive, the bonding agent fundamentally excludes the curing agent or the component that induces solidification or includes only the minimum units, thereby allowing the non-solidifying physical properties to be used in the curl (curl: bent or curved shape of the data card) fabric. It has the effect of fundamentally eliminating the occurrence of the phenomenon (when you wrap it around a wick and roll it up, it maintains its rolled shape).

This invention not only ensures the flatness recovery force (force to return to a flat form) of the data card itself, but also realizes a thinner cross-sectional area compared to the existing thick data card made of a single PET film (such as a credit card with a thickness of about 1 mm). It is formed so that the printer head is not damaged, and in particular, there is no curl phenomenon, which greatly improves printability and usability.

1 is an example showing a flexible thin-plate information printing data card with a curl prevention function according to the present invention;
Figure 2 is an exemplary diagram showing a method of manufacturing a flexible thin-plate information printing data card with a curl prevention function.

Next, the present invention will be described in more detail with reference to the attached drawings.

First, as shown in FIGS. 1 and 2, the present invention is formed by bonding a PET film 100 and a PP film 200 with a hot melt adhesive 300.

Here, the PET film is a layer to ensure shielding power, and the PP film is a layer to ensure printing power.

At this time, the PET film and PP film are laminated with a hot melt adhesive, and it is desirable that the total thickness does not exceed 0.31 to 0.45 mm. This is to ensure usability, handling, and excellent storage properties in a flexible thin plate form.

Accordingly, the PET film 100 is a transparent material, has a thickness of 0.188 mm, and is formed by coating white ink on one side of the transparent surface to ensure shielding power (the side that makes printing visible).

In addition, the hot melt adhesive 300 has a bonding layer thickness of 0.01 to 0.015 mm, and has physical properties (curing, solidification, or solidification) equivalent to the isocyanate group or isocyanate group, which is a curing agent, compared to the thermoplastic resin (solid agent such as urethane prepolymer), which is the main bonding material. Ingredients) are excluded or a bonding layer is formed in a liquefied state by applying heat (at least 0.1% to a maximum of 10%). Even if it is bonded to a PP film that has already been laminated, the viscosity will later turn into a sticky liquid or liquefy state. Maintained _ Existing adhesives have a thermoplastic resin content that is more than 50% higher than that of the solvent, so when hardened, the viscosity solidifies and becomes hard), but it is applied to the other side of the surface of the PET film (the opposite side coated with white ink) to form a bonding layer. It is formed to achieve.

Accordingly, the PP film 200 has a thickness of 0.080 mm, and is formed by coating one surface with a dispersion heat sensitive agent and then bonding it on a bonding layer formed by a hot melt adhesive to laminate it with the PET film 100.

Meanwhile, the data card manufacturing method according to the present invention largely consists of a white coating step (S100), a hot melt adhesion step (S200), a lamination step (S300), a maturing step (S400), and a cutting step (S500).

Accordingly, the white coating step (S100) is formed to provide shielding power by coating white ink on one side of the base paper of the PET film 100.

That is, the PET film 100 is made of transparent material, and is formed by applying white ink to one side of PET to ensure shielding power during printing.

For reference, general cards are made only from PET film itself, and usually have a thickness of about 1mm. This is hard due to its high mechanical strength, and when printing various data on the surface, it must be recognized through ribbon or inkjet marking. The addition of a separate ancillary process causes problems of reduced productivity and economic efficiency.

The PET film 100 in the present invention has a thickness of 0.188 mm and is formed by coating white ink on one side of the transparent surface to ensure shielding power (the side that makes the printing visible), securing flexible physical properties as described later. It is laminated with PP film to maintain mechanical strength while maximizing printability (capable of increasing recognition of photos, characters, or designs).

Accordingly, the hot melt adhesive step (S200) is formed to apply the hot melt adhesive 300 to a set thickness on the other side of the surface of the PET film 100, which is opposite to the white ink coating.

In other words, apply the hot melt adhesive to the other side of the PET film that is not white coated, but apply it in a minimum or very small amount (approximately 0.01 to 0.15 mm thick) using the roller of the gravy printer.

At this time, the hot melt adhesive has a bonding layer thickness of 0.01 to 0.015 mm, and has physical properties equivalent to the isocyanate group or isocyanate group (a component that induces hardening, solidification, or solidification) compared to the thermoplastic resin (solid agent such as urethane prepolymer), which is the main bonding material. ) components are excluded or at a minimum of 0.1% to a maximum of 10% (this is to form a bonding layer in a liquefied state by applying heat, so that the viscosity is maintained in a sticky liquid or liquefied state even after bonding with the PP film that has been laminated) _Existing adhesives have a thermoplastic resin content of more than 50% higher than that of the solvent, so when hardened, the viscosity solidifies and becomes hard), but it is applied to the other side of the surface of the PET film (the opposite side coated with white ink) to form a bonding layer. do.

At this time, the hot melt adhesive is prevented from contacting the edge portion of the surface of the PET film. This means that the hot melt adhesive is applied except for a portion of the edge, so that the hot melt adhesive is not used when pressing with a pressure roller during lamination (pressing with a hydraulic roller) as described later. It is formed so that it flows sideways and adheres to the edge.

Afterwards, the border part is removed at the cutting stage (dry laminating does not hold curls -> it is attached by applying heat to the adhesive).

In other words, the hot melt adhesive in this process already has sticky properties in a mucus state at ambient temperature without heating, and prevents the phenomenon of the heat sensitive agent turning black when bonded with a PP film coated with a heat sensitive agent.

Accordingly, the lamination step (S300) is performed to produce a laminated fabric by bonding the PP film 200 coated with the dispersion heat sensitive agent onto the bonding layer formed by the hot melt adhesive 300.

In other words, the reason for laminating PET film and PP film is to form a minimal card shape, secure the thickness of a thin sheet, and ensure printability along with mechanical strength and soft and flexible properties.

For reference, if it is produced with a single PET film as before, it is too hard and the print head will be damaged when put into a printing machine, and recognition information cannot be output well, so PP film, a soft material, is laminated together. (The existing ones are PET. The product prints data using ribbon ink, which is expensive and has complex problems)

In other words, the data card of the present invention secures mechanical strength through the PET film and prints the selected data on the heat sensitive material coated on the PP film (when heat is applied to the information recognition printer, letters or pictures are printed in black -> It is formed to be output to the heat sensitive part.

For reference, the conventional lamination method using dry laminate is to melt and attach the resin polymer (EVA) or thermoplastic resin applied between two films while applying heat. When bonded through this method, the thermal paper portion becomes black due to the heat generated. There is a problem of discarding (unable to combine with heat -> PP film turns black, deforms, bends, and curls when heat is applied).

The present invention applies a hot melt adhesive (a slime that is already liquefied at a set temperature) corresponding to the ambient temperature without rising temperature to the PET film, attaches the PP film, and then attaches the PP film at a set time and speed (1 to 10 m/min). It is formed to be combined by pressing and rolling.

Accordingly, the aging step (S400) is formed so that the laminated PET film 100 and PP film 200 are aged for a set time by the hot melt adhesive 300.

That is, the maturation step is a waiting time for the bonding of the PET film 100 and the PP film 200 to be completed by the hot melt adhesive 300, and is preferably limited to about 24 to 48 hours at room temperature.

Accordingly, the cutting step (S500) is formed to cut the laminated fabric according to the specifications requested by the orderer.

This cutting stage is formed so that it can be freely cut into the size of a business card or existing card, or into the shape of a bracelet (in the form of a water park admission ticket, etc.), and can be cut according to the customer's request that is compatible with a print printer.

The present invention is not limited to the specific preferred embodiments described above, and various modifications can be made by anyone skilled in the art without departing from the gist of the invention as claimed in the claims. Of course, such changes are within the scope of the claims.

100 ... PET film 200 ... PP film
300 ... hot melt adhesive
S100 ... White coating step S200 ... Hot melt adhesion step
S300 ... lamination stage S400 ... ripening stage
S500 ... Foundation stage

Claims (3)

delete delete A white coating step (S100) of coating white ink on one side of a PET film (100) base paper, which is a transparent material and has a thickness of 0.188 mm, to provide shielding power;
The hot melt adhesive (300) is applied to the set thickness on the other side of the PET film (100) opposite to the white ink coating. The thickness of the bonding layer using the hot melt adhesive (300) is 0.01 to 0.015 mm, and the thickness of the bonding layer using the hot melt adhesive (300) is 0.01 to 0.015 mm. Compared to the main thermoplastic resin, the isocyanate group component, which is a curing agent, is excluded or mixed at a minimum of 0.1% to a maximum of 10% to form a bonding layer, and the hot melt adhesive (300) does not touch the edge part of the surface of the PET film (100). A hot melt adhesion step (S200) in which the hot melt adhesive 300 flows to the side and adheres to the edge portion during compression by a compression roller when laminated with the PP film 200;
A lamination step (S300) of manufacturing a laminated fabric by bonding the PP film 200 coated with the dispersion heat transfer agent onto the bonding layer formed by the hot melt adhesive 300;
A maturing step (S400) in which the laminated PET film 100 and PP film 200 are aged at room temperature for 24 to 48 hours using a hot melt adhesive 300;
A cutting step (S500) of cutting the laminated fabric according to the specifications requested by the orderer;
A method of manufacturing a flexible thin-plate information printing data card with a curl prevention function, characterized in that it is composed of: