Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
  • C08J7/04—Coating
  • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
  • C08J7/04—Coating
  • C08J7/044—Forming conductive coatings; Forming coatings having anti-static properties
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
  • C08J7/04—Coating
  • C08J7/046—Forming abrasion-resistant coatings; Forming surface-hardening coatings
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
  • C08J2375/04—Polyurethanes
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
  • C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters

Definitions

• the present invention relates to a thin laminating film, and more particularly, to a thin laminating film in which a thin film layer coated with resin ink on a base film is transferred on a surface of the adhered matter such as a card, a document and the like, and then the base film is separated such that the adhered matter is laminated using the thin resin film.
• a conventional thin laminating film uses a method in which a polyethylene coating membrane (thin film) layer of a laminating sheet coated with polyethylene solution on a release-treated film or a synthetic resin film having a releasing property is transferred to a surface of an adhered matter.
• the conventional thin laminating film has a drawback in that the laminated surface is weak against heat, in that waterproof and solvent resistance are deficient, in that the surface is stained or a thin film layer is fragile, and in that bonding force is weak between an adhering agent and a thin film.
• 10-2002-0088529 discloses a function- reinforced heat-sealable thin film having a base film having a releasing property; a functional thin film layer coated with a resin having a function-reinforcement additive on the base film; and an adhesive layer coated with a heat-sealable resin having a urethane-based resin added thereto.
• the adhered matter is coated in such a manner that a surface of the adhered matter intended for protection is in facing contact with the adhesive layer and then passes through a laminator together with the base film, and then the adhered matter is separated from the base film.
• an X-dir ⁇ ctional tear strength of the adhesive layer is intentionally decreased using the urethane-based resin added to the heat-sealable resin such that an interface is easily cut between the laminated surface of the adhered matter and a non-adhered remaining surface of the thin film.
• a curing agent is used to provide a better cohesion between the base film and the resin film. If the curing agent is added to the resin film, the base film and the resin film are excessively and firmly bonded. Therefore, when the base film is separated after lamination, a drawback occurs in which the thin film is torn or separated from the adhesive layer.
• the conventional thin laminating film 10 generally includes a base film 11, a releasing-agent treatment layer 13, a resin layer 15 and an adhesive layer 17 when viewing a section thereof.
• silicon oil, flexible paraffin, wax and the like are used as a releasing agent.
• the conventional thin laminating film has a drawback in that perfection and quality of a product are deteriorated since a use of the releasing agent causes a phenomenon of blocking, transition of other surface or the like to be generated due to pushing of the base film against the resin coating layer when the thin film is manufactured, carried, kept and laminated.
• the present invention is directed to a thin laminating film that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.
• a thin laminating film for laminating an adhered matter in such a manner that a thin film layer coated on a laminating sheet is transferred to a surface of the adhered matter
• the laminating film including: a base film formed of a synthetic resin film having a thermal stability; a surface thin film layer coated with a 1-type resin for protecting the surface of the adhered matter; an adhesive layer coated with a thermal adhesive resin for adhering the surface thin film layer to the adhered matter; and a curing-agent treatment layer coated with a 2 -type resin layer having a curing agent and a resin having the same composition as the resin of the surface thin film layer, between the surface thin film layer and the adhesive layer, whereby after lamination, the base film is easily separated from the surface thin film layer without a separate releasing-agent treatment while a membrane strength is reinforced.
• the inventive thin laminating film includes the surface thin film layer having a thermal stability; a surface thin film layer coated with a 1-type resin for protecting the surface of the adhered matter;
• FIG. 1 is a section view illustrating a conventional thin laminating film
• FIG. 2 is a section view illustrating a thin laminating film according to a preferred embodiment of the present invention
• FIG. 3 is a view illustrating a use state of a thin laminating film having a texture pattern according to a preferred embodiment of the present invention
• FIG. 4 is a section view illustrating a preformed hologram film.
• a thin laminating film 20 includes a base film 21; a resin layer 23 coated with a thin film for protecting an adhered matter from an external environment, on the base film 21; a curing-agent treatment layer 25 formed on the resin layer 23; and an adhesive layer 27 laminated on the curing-agent treatment layer 25.
• the base film 21 should have a thermal stability and an appropriate thickness functioning to support a thin film layer coated thereon when the base film is manufactured, carried, kept and laminated, it can use an OPP attached paper, a high glazed paper, a synthetic resin film of a PET film, and the like. At this time, it is desirable that they have a thickness of 11 to 16 microns.
• the resin layer 23 is a surface thin film layer for preventing the adhered matter of a document, a card, a picture and the like from being worn, transformed and discolored due to an external environment, and is formed on the base film 21.
• the resin layer can also use a resin having a single or miscible additive of a mixture of wax, silicon oil and the thermal curing agent for reinforcing scratch resistance and chemical resistance, a visible or invisible fluorescent pigment/dye or luminescent pigment for providing a specific security element, a specific chemical for revealing a chemical discoloration, a pearl pigment basis, a conductive material, a TXV screen agent or the like.
• the present invention is characterized in that the curing-agent treatment layer 25 is formed between the surface thin film layer 23 and the adhesive layer 27, as a mixed layer of the curing agent and a resin having the same component as that of the surface thin film layer 23.
• the resin including the curing agent improves a bonding strength between the surface train film layer 23 and the adhesive layer 27 to provide an effect in which after lamination, the adhesive layer is prevented from being peeled or separated and in which membrane strength is reinforced.
• the resin forming the curing-agent treatment layer 25 uses the same resin as the surface thin film layer 23 to cure the surface thin film layer 25, and an upper side and a lower side of the surface thin film layer 23 can have curing degrees differentiated by using a heat (24hours, 40 to 60 ° C ) remaining at the time of drying. That is, the curing degree is much more progressed at the lower side adjacent to the curing-agent treatment layer 25, and the curing degree is inactively progressed at an upper adjacent surface to the base film 21. Accordingly, the surface thin film layer 23 and the curing-agent treatment layer 25 are chemically firmly bonded, whileas the base film 21 and the surface thin film layer 23 physically weakly bonded.
• the heat-sealable resin is coated on the curing-agent treatment layer 25 to form the adhesive layer 27.
• the adhesive layer 27 can reinforce the bonding force between the thin film layer and the adhered matter. After lamination, the adhesive layer 27 can be thermally fused to prevent the surface of the adhered matter from being air-layered or stained.
• Ethyl vinyl 1 acetate, methyl methacrylate, low molecular polyethylene, polyester, polypropylene and the like are coated in a T-die extrusion or dry lamination method to form the general heat-sealable hot melt resin as the adhesive layer.
• a cohesion accelerator is added to the hot melt resin.
• a urethane polymer is added to allow an edge portion of a laminating matter on the adhered matter to be easily cut.
• a 1-type polymer of acryl and urethane resin is coated using a coater on a polyester film having a thickness of 11 to 16 microns.
• the other surface of the polyester film is treated using a release coating agent such as silicon oil, flexible paraffin and wax such that the other surface of the base film is prevented from being adhered to the coated resin layer when the completed laminating film is wound for keeping, and further that the coating layer of the resin film can be distinguished at a front and rear thereof.
• a release coating agent such as silicon oil, flexible paraffin and wax
• a 1-type polymer of acryl and urethane resin is coated using a coater on a polyester film having a thickness of 11 to 16 microns.
• a 2-type ink having the same-type acrylic- based resin and isocyanate added thereto is over-coated on the 1-type polymer, and then a hot-melt resin complex is sequentially formed as a multi-layer complex to form the thin film layer including a coating layer having a thickness of 8 to 10 microns.
• the other surface of the polyester film is treated using a release-coating agent such as silicon oil, flexible paraffin and wax.
• a 1-type polymer of a urethane-based resin is coated using a coater on a polyester film having a thickness of 11 to 16 microns.
• a 2-type ink having the same-type acrylic- based resin and isocyanate added thereto is over-coated on the 1-type polymer, and then a hot-melt resin complex is sequentially formed as a multi-layer complex to form the thin film layer including a coating layer having a thickness of 8 to 10 microns.
• the other surface of the polyester film is treated using a release-coating agent such as silicon oil, flexible paraffin and wax.
• the inventive thin laminating film is characterized by including the surface thin film layer having the ink-printed texture pattern or hologram formed on the base film.
• a principle of forming the texture pattern on the surface thin film layer is described.
• a texture-patterned circle 22 is formed on the base film 21 in an ink printing method, and then the surface thin film layer 23, the curing-agent treatment layer 25 and the adhesive layer 27 are sequentially formed on the base film 21.
• the ink printing can be performed on the base film 21 since it is not required that the releasing-agent treatment is performed on the base film. If the adhered matter is laminated and then the base film 21 is separated, the texture pattern is formed on the surface thin film layer 23.
• the hologram film includes the PET 30 and a metal deposition layer 31 such as aluminum, silver and gold having the hologram pattern formed.
• the hologram film is used as the base film 21 and the surface thin film layer, the curing-agent treatment layer and the adhesive layer are sequentially coated on the metal deposition layer 31, the hologram pattern having a size of less than several microns and a shape of prominence and depression is filled with the resin to form the membrane. Accordingly, if a release film is peeled, hologram can be simply and economically expressed on the surface of the thin film.
• the thin laminating film having the texture pattern or the hologram pattern according to the present invention has an effect in which, due to its thickness of a micron unit, it can maintain a texture almost identical with the adhered matter while it can be used as means for a decoration effect, a. forgery prevention effect and the like.
• the thin laminating film according to the present invention has a very economical advantage in which a separate additional equipment or device is not required unlike a surface embossing process using a conventional twice-processing method so as to form the texture pattern or the hologram pattern.
• the thin laminating film according to the present invention has an effect in which the thin film layer can be easily separated from the base film without the separate releasing-agent treatment. Accordingly, the pushing can be prevented from being generated before and after winding due to the coated surface of the thin film by not using the silicon and wax-based releasing agent.
• a printed media can be configured in various patterns on the base film contacting with the surface thin film layer such that the texture pattern and the like can be formed on the thin film.
• the inventive thin laminating film has an advantage in that the texture can be maintained identically with that of the adhered matter while a decorative element can be provided for the adhered matter, by providing the laminating film having the texture pattern formed on the surface of the thin film having a size of about several dozens of microns. Furthermore, the inventive thin laminating film has an advantage in that the hologram of the thin film can be formed on the surface of the adhered matter, and the hologram can be used as means for increasing an advertisement effect or preventing the document from being forged, by providing the laminating film having the texture pattern formed on the surface of the thin film having a size of about several dozens of microns .

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• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Laminated Bodies (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34511141

Family Applications (1)

Country Status (3)

Families Citing this family (1)

Citations (3)

• 2003
  • 2003-10-28 KR KR1020030075583A patent/KR100586254B1/ko not_active IP Right Cessation
  • 2003-12-09 WO PCT/KR2003/002690 patent/WO2005039875A1/en active Application Filing
  • 2003-12-09 AU AU2003304515A patent/AU2003304515A1/en not_active Abandoned

Patent Citations (3)

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