CN221049185U

CN221049185U - Card substrate structure

Info

Publication number: CN221049185U
Application number: CN202321546687.XU
Authority: CN
Inventors: 许贵贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-16
Filing date: 2023-06-16
Publication date: 2024-05-31
Anticipated expiration: 2033-06-16

Abstract

The utility model discloses a card substrate structure, which solves the problem of wide bending or warping of the traditional card substrate, has the characteristics of environment friendliness, recoverability, degradability, low price and the like, and is suitable for card substrates such as IC cards, membership cards, bank cards, credit cards, business cards and the like, and packaging materials such as gift packages, product packages and the like. The card substrate is structurally characterized in that after the protective film covered on the laser film is torn off, a layer of protective oil is uniformly covered on the surface of the laser layer without the protective film, so that the problem of surface bending or warping caused by inconsistent shrinkage ratio is solved.

Description

Card substrate structure

Technical Field

The utility model belongs to the field of card substrate structures and manufacturing, and particularly relates to a card substrate structure.

Background

Currently, plastic cards are increasingly accepted by different people or business bodies as carriers for information transmission or a medium for packaging and propaganda, and have more and more application prospects, and are used throughout various industries, especially in the fields of business societies, consumer membership cards, product packaging materials and the like. Along with the continuous improvement of the economic living standard, the material has high requirements on the aesthetic property, the health property, the environmental protection property and the like in terms of materials due to the special property of consumer groups. However, the prior art is deficient in these respects, and particularly, there are unsightly phenomena such as bending and warping which are easily generated in the card base material itself, and also, since the material is not green, there is a negative influence on the ecological environment and it is not good for the health of the user. Therefore, in order to break through the technical bottlenecks, the inventor develops a new way, and redesigns the structural composition of the card substrate compared with the prior art so as to meet the requirement of more market diversification.

Disclosure of utility model

1. General inventive idea

In order to overcome the defects in the prior art, the utility model provides a special card substrate structure, namely, the special card substrate structure is different from the traditional structure that a laser film is simply adhered to a substrate, and in order to obtain a better adhering effect, the adhesive is combined with the laser film and the substrate better under the condition of high temperature, and under the action of high temperature, the shrinkage ratio of the protective films of the substrate, the laser film and the laser film is not caused, and the protective films of the substrate, the laser film and the laser film are not consistent in direction and are deformed in different sizes after being cooled at high temperature, so that after the protective films of the substrate, the laser film and the laser film are cooled and set, the protective films are pulled in different directions due to release of different internal stresses, and finally, the phenomena such as bending and warping are not attractive are generated, and the phenomena are generated to different degrees due to abrupt release of the internal stresses after the phenomena are cooled at a long time even when the laser film is used in a real scene. Therefore, the utility model mainly provides a method for removing the film which is generally used for protecting the card laser film after the laser film is adhered to the substrate (the laser film from which the protective film is removed is called a laser layer), and a protective coating which is formed by UV oil, scratch-resistant oil, thermosetting ink and the like is uniformly covered on the surface to replace the protective coating. The protective coating is covered on the laser film from which the protective film is removed, namely the laser layer, and does not need to be heated at high temperature, so that the protective coating does not deform like the protective film, and the protective coating which is formed into a whole by condensation is small in deformation, and the final substrate, the laser layer and the protective coating are formed into an organic whole due to high internal ductility, so that the protective coating has relatively uniform mechanical properties, and the phenomena of bending, warping and the like the traditional card base material are avoided. This is a significant technical advance achieved by the inventors successfully overcoming the technical prejudice of the conventional protective film applications and creatively using protective coatings with more aesthetic and protective effects.

2. Detailed description of the utility model

The utility model provides a card substrate structure, which comprises a substrate, wherein the substrate is made of plastic, paper, iron or wood, a laser film without a protective film is covered on the substrate, the laser film without the protective film is a laser layer, the substrate and the laser layer are bonded through an adhesive, and a protective coating is covered above the laser layer.

Further, the material composition of the protective coating comprises UV oil or thermosetting ink or scratch-proof matt oil or scratch-proof gloss oil.

Further, the substrate plastic material is PVC or ABS.

Further, the substrate plastic material is PET or PLA.

Further, the laser film is a laser aluminized film.

Further, the thickness of the aluminized layer of the laser aluminized film is controlled to be 150-450A.

Further, the adhesive is UV glue, and the thickness of the UV glue is 10-30 mu m.

Further, the adhesive is hot melt adhesive, aqueous adhesive, oily adhesive, AB adhesive or the like, and the thickness of the hot melt adhesive, the aqueous adhesive, the oily adhesive or the AB adhesive is 10-30 mu m.

Further, the thickness of the protective coating is 5-30 μm.

3. Effects of the utility model

The method can solve the problem of unattractive bending, warping and the like caused by the traditional card base material, and meanwhile, the card base material is made of more environment-friendly and decomposable healthy and nontoxic materials, such as polylactic acid materials, paper and the like, so that the used materials are environment-friendly, and the card base material has appearance value, economic value, environment-friendly value and popularization value, and realizes a larger effect of the utility model.

Drawings

Fig. 1: card substrate structure overall diagram

Fig. 2: card substrate structure exploded view

The drawings mainly label the description:

1-protective coating

2-Laser layer

21-Laser layer front side

22-Laser layer reverse side

3-Adhesives

4-Substrate

41-Front side of substrate

42-Reverse side of substrate

Detailed Description

For this reason, the present application provides a card substrate structure, as shown in fig. 1 and 2, which mainly includes four parts, namely a protective substrate, an adhesive, a laser layer and a coating. These four components are described below separately.

As shown in fig. 2, in which the substrate is typically made of plastic or paper, the following descriptions are provided:

1.PVC

PVC (polyvinyl chloride) granular rubber is a multi-component plastic, and the appearance is quite different due to the different contents of the components. With transparent material, also with opaque material: some are soft and elastic, and are folding-resistant; there are also materials with excellent mechanical properties of hard rigidity. Most of the PVC is slightly toxic, but also has food grade PVC glue particles. With the development of the plastics industry, some PVC composites have emerged, such as: PVC/ABS, PVC/PET, PVC/PE (polyethylene) and the like, and the performance of the PVC/ABS/PET composite material is improved compared with that of PVC.

2.ABS

ABS is synthesized from three monomers of acrylonitrile, butadiene and styrene, is a pale yellow opaque particle ABS with higher gloss on the surface, is a noncrystalline material, and has a slightly heavier specific gravity than water. ABS materials have high rigidity, medium tensile strength, good chemical corrosion resistance, good surface hardness, good toughness and impact resistance, easy processing, strong fluidity, and easy printing and dyeing. ABS materials have the characteristics of good luster, high hardness, toughness, rigidity, moderate mechanical properties and the like. It is suitable for use as a card-based material because it is easy to print and plate and has a good dimensional stability.

3.PET

PET is a thermoplastic polymer, is formed by esterification reaction polymerization of terephthalic acid and ethylene glycol, is a crystalline polyester, has obvious melting point, is melted at 250 ℃ and decomposed at 360 ℃, and is generally processed at 280-320 ℃; PET is a colorless transparent material with high hardness and toughness, so it is a base material for producing photographic film, and can be used for producing audio-visual tape and video tape. The PET film material has low specific gravity, no moisture absorption, high insulativity and transparency, excellent mechanical property, small processing deformation, good wear resistance and good chemical corrosion resistance, and the manufactured card has high surface smoothness and long service life, and meanwhile, the PET film belongs to an environment-friendly material.

4.PLA

The English name of PLA (polylactic acid) is Polylactic acid, which is called PLA for short. Is a generic term for polymers obtained by polymerizing starch extracted from renewable plant resources (such as corn) as a main raw material. The PLA has good mechanical property and physical property, good thermal stability, processing temperature of 170-230 ℃ and excellent solvent resistance and degradability. The product prepared from polylactic acid has good glossiness, transparency and heat resistance, certain bacteria resistance, flame retardance and ultraviolet resistance, and excellent tensile strength and extensibility besides biocompatibility. PLA clear resins are translucent or opaque particulate amorphous polymers. The hand feeling is more comfortable, the melting point is 175-185 ℃ and the glass transition temperature is 50-65 ℃. PLA is composed of starch, has good biodegradability, can be completely degraded by microorganisms in the nature after being used, finally generates carbon dioxide and water, does not pollute the environment, is very beneficial to protecting the environment, and is a recognized environment-friendly material. When PLA is burned, toxic gases such as nitrides and sulfides are never released. The human body also contains lactic acid in a monomer form, so that the material is harmless to the human body and can be absorbed by the human body, and the high safety of the material is fully shown. PLA is of great advantage as a substrate material for cards, since it is chemically and physically self-expanding and also has very excellent environmental protection.

5. Paper sheet

Paper is used as a substrate material and is increasingly popular in the market, and the paper card is a new paper card which is beneficial to environmental protection, has the advantages of lower cost and simple and convenient manufacture, and is widely accepted and used in various communities. The paper card has no pollution, is a green environment-friendly card, has a very wide application range and is gradually replacing the PVC card. The paper card adopts coated paper as card base material, and generally has various thicknesses of 200 g, 250 g, 300 g, 350 g, 400 g, 450 g, 500 g and the like.

6. Metal, wood

In order to make the card more textured, metal or wood may be used as the substrate material, and the metal or wood is a common material and will not be described in detail herein.

As shown in fig. 2, the adhesive is typically UV glue, but other adhesives suitable for the card manufacturing industry are also possible, and the following description will be focused on UV glue:

The shadowless glue, namely UV glue, is also called photosensitive glue and ultraviolet light curing glue, is an adhesive which can be cured by ultraviolet light irradiation, can be used as an adhesive, and can also be used as sizing materials of paint, coating, printing ink and the like. UV is an abbreviation for english Ultraviolet Rays, ultraviolet light. Ultraviolet (UV) is invisible to the naked eye and is a segment of electromagnetic radiation other than visible light, with wavelengths in the range of 10 to 400 nm. The curing principle of the shadowless glue is that a photoinitiator (or a photosensitizer) in the UV curing material generates active free radicals or cations after absorbing ultraviolet rays under the irradiation of the ultraviolet rays to initiate chemical reactions of monomer polymerization and crosslinking, so that the adhesive is converted from a liquid state to a solid state within a few seconds. The ultraviolet source includes natural sunlight and artificial light source. The faster the ultraviolet ray is, the faster the curing speed is, and the curing time is generally varied from 10 to 60 seconds. For natural sunlight, the faster the ultraviolet rays in sunny weather sunlight will be stronger than the solidification speed. But without intense sunlight only artificial ultraviolet light sources are used. The artificial ultraviolet light source has a plurality of types, the power difference is very large, the low power can be as small as a few watts, and the high power can reach as high as tens of watts. The curing speeds of shadowless adhesives produced by different manufacturers or different models are different.

Other usable adhesives include hot melt adhesives, aqueous adhesives, oily adhesives, AB adhesives, and the like, wherein the aqueous adhesives, namely the aqueous adhesives, are prepared by taking natural polymers or synthetic polymers as adhesives, taking water as a solvent or a dispersing agent to replace toxic organic solvents polluting the environment. Its advantages are no poison and pollution, no combustion, high safety, easy implementation of clean production, and low drying speed, poor water resistance and freezing resistance. The aqueous adhesive comprises a single component and a double component, wherein the two components are not very different, and the aqueous adhesive can be practically used, but the aqueous adhesive (single component) is preferable. The oily adhesive is mainly semitransparent liquid formed by copolymerizing acrylic monomers and imported auxiliary materials, and has the characteristics of good initial viscosity, strong holding power, large stripping force, good freezing resistance and the like. The oily glue is different from the aqueous glue in that the solvents are different, the main solvent of the aqueous glue is water, acrylic acid and the like, and the glue is prepared. The main solvent of the oily glue is oily solvent, which is prepared by dissolving toluene and acrylic acid. The AB glue is a generic name of two-liquid mixed hardening glue, one liquid is the glue, the other liquid is the hardening agent, the two liquids are mixed to harden, and the glue is hard to harden without depending on temperature, so the AB glue is a normal-temperature hardening glue, and a model is sometimes used. Are commonly used in industry. AB glue is a term for two-component adhesives. AB glue with acrylic acid, epoxy, polyurethane and other components is commercially available.

As shown in fig. 2, the following is a specific description of the laser layer:

The laser film is first described, because the laser layer is the material remaining after separating a protective film layer covered on the laser film. The laser film is generally divided from the component constitution of the product by adopting a computer lattice photoetching technology, a 3D true color holographic technology, a multiple and dynamic imaging technology and the like, and the laser film product can be roughly divided into a BOPP laser film, a CPP laser film, a PET laser film, a PVC laser film and the like.

In order to improve the aesthetic degree of the card, a laser aluminizer is used to be adopted, and the laser aluminizer is divided into a BOPP coating film, a CPP aluminizer and a PET aluminizer, and the characteristics of the laser aluminizer and the PET aluminizer are as follows:

(1) BOPP aluminizer: the biaxially oriented polypropylene (BOPP) film (namely biaxially oriented polypropylene film Biaxially oriented polypropylene film) is used as a raw material and is processed by vacuum aluminizing; the aluminum-plated coating is plump and smooth, has good adhesive force to the aluminum layer and strong adhesive force to the printing ink, and is suitable for various printing characteristics such as lithographic plate, intaglio plate, flexible plate and the like; the method is widely used in the fields of flexible packaging, handbag, packaging paper, gift box, compounding, decoration, laser holographic anti-counterfeiting, laser imprinting laser and the like.

(2) CPP aluminizer: the film is prepared by taking a CPP film (namely a cast polypropylene film cast polypropylene, also called an unstretched polypropylene film) as a raw material and carrying out vacuum aluminizing processing; the aluminum-plated steel has the characteristics of low initial sealing temperature, wide heat sealing temperature, high strength, high glossiness, strong metal sense, good aluminum plating uniformity and the like; is widely used in the fields of flexible package compounding, food package, toy, balloon and the like.

(3) PET aluminizer: the PET film is used as a raw material and is processed by vacuum aluminizing; the aluminum coating has the characteristics of good adhesive force to the aluminum coating, strong adhesive force to the printing ink, and suitability for various printing such as offset printing, gravure printing, flexography printing and the like; the method is widely used in the fields of printing, compounding, pattern drawing, weaving of gold and silver wires, self-adhesive and the like.

In order to protect the laser layer from damage, most laser layer manufacturers cover a protective film on the laser layer, and after the protective film is covered on the laser layer, the laser layer is called a laser film, for example, after the protective film is removed, the laser layer is called a laser layer, in other words, the laser layer can be simply understood as a laser film without the protective film. The substrate of this patent all be the laser layer after the protection film separation and constitute, if do not have special mark, the laser layer that this patent text mentions is the material after having got rid of the protection film with the laser film, just the front or reverse side of laser film and the front or reverse side of laser layer the direction unanimous, the specific reference drawing is to the schematic of front or reverse side of laser layer.

As shown in fig. 2, the protective coating is specifically described as follows:

The protective coating has the function of forming a compact coating on the surface of the laser film so as to protect the attractiveness of the laser film from being stable due to the change of environmental parameters such as temperature, humidity, pH value and the like in a certain range, and more importantly, the phenomena of bending and warping caused by inconsistent internal stress after being pressed and shrinkage ratio after being heated after the laser film and the substrate are compounded. The material composition of the protective coating comprises UV oil, thermosetting ink, scratch-proof matt oil, scratch-proof gloss oil and the like. Wherein the UV oil is a clear coating, also known as UV varnish. The surface hardening agent has the functions of scraping resistance and scratch resistance, and has the characteristics of bright appearance, attractive appearance, mellow texture, excellent adhesive force, high gloss, high smoothness, high leveling property, high curing speed and the like. The thermosetting ink is also called as self-adhesive ink. The components of the composition are as follows: mainly comprises polyvinyl chloride (PVC) and phthalic acid esters, and the thermosetting ink is formed by mixing the polyvinyl chloride, the phthalic acid esters, a color fixing agent, a stabilizer and a thickener. The scratch-proof matt oil consists of crude oil, modified nano SiO2 dispersion liquid and a water-based cross-linking agent, wherein the crude oil consists of polyurethane emulsion, acrylic ester copolymer and a composite surfactant. The scratch-proof matt oil is a printing material which is coated on paper, paperboard or film, so that the printed color is bright and smooth, has a stereoscopic impression, has the advantages of safety, low cost and wide raw material sources, and has wide application in the field of printing and packaging. The scratch-proof varnish has basically similar performance and composition with the scratch-proof matt varnish, and the main difference is the degree of reflection intensity of the film surface, the film surface of the scratch-proof varnish has stronger reflection, and the film surface of the scratch-proof matt varnish has weaker reflection.

In summary, the manufacturers can flexibly formulate various materials according to different requirements of specific products on performances so as to meet different requirements on card substrates under different use scenes.

The structure of a card substrate according to the present utility model will be described and illustrated in detail with reference to the following embodiments and fig. 1 and 2.

Embodiment one:

Regarding the structural aspect of the card substrate, the substrate material is PVC, the laser film is PVC laser film, the material of the protective coating is thermosetting ink, and the adhesive between the substrate and the laser film is UV adhesive. The structure of the card substrate has the characteristics of low cost and attractive appearance, and the laser film is well protected by the protective coating, so that the problems of bending and warping of materials of each layer due to inconsistent shrinkage ratio are avoided. However, the material is not an environment-friendly material, has certain human body harmfulness, and is not easy to degrade after being used, so that the material is mainly used in scenes which are sensitive to price and are less in contact with human body.

Embodiment two:

Regarding the structural aspect of the card substrate, the substrate material is PLA, the laser film is BOPP aluminized film, the material of the protective coating is UV oil, and the adhesive between the substrate and the laser film is UV adhesive. The card substrate has the characteristics of no toxicity, health, environmental protection, beautiful durability, high cost performance and the like.

Embodiment III:

Regarding the structural aspect of the card substrate, the substrate is made of PET, is an environment-friendly material, can be recycled, and is made of BOPP aluminized films, the protective coating is made of UV oil, and the adhesive between the substrate and the laser layer is UV adhesive. The card substrate has the characteristics of environmental protection, attractive appearance, durability, higher cost performance and the like.

The above description is merely of a preferred embodiment of the present utility model, the protection scope of the present utility model is not limited to the above-listed examples, and any simple changes or equivalent substitutions of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present utility model disclosed in the present utility model fall within the protection scope of the present utility model.

Claims

1. The structure of the card substrate comprises a substrate, and is characterized in that the substrate is made of plastic, paper, metal or wood, a laser film without a protective film is covered on the substrate, the laser film without the protective film is a laser layer, the substrate and the laser layer are bonded through an adhesive, and a protective coating is covered above the laser layer.

2. The card substrate structure of claim 1 wherein the protective coating is comprised of a material comprising UV oil or a thermoset ink or a scratch-resistant matt or scratch-resistant gloss oil.

3. The card substrate structure of claim 1 wherein said substrate plastic material is PVC or ABS.

4. The card substrate structure of claim 1 wherein the substrate plastic material is PET or PLA.

5. The card substrate structure of claim 1 wherein the laser film is a laser aluminizer.

6. The card substrate structure of claim 5 wherein the aluminized layer thickness of the laser aluminized film is controlled to be 150-450A.

7. The card substrate structure of claim 1 wherein the adhesive is a UV glue and the UV glue has a thickness of 10-30 μm.

8. The card substrate structure of claim 1 wherein the adhesive is a hot melt adhesive or an aqueous adhesive or an oily adhesive or an AB adhesive.

9. The card substrate structure of claim 8 wherein the thickness of the hot melt adhesive, the aqueous adhesive, the oily adhesive, or the AB adhesive is 10-30 μm.

10. The card substrate structure of claim 1 wherein the protective coating has a thickness of 5-30 μm.