JP2007307882A - Method for decorating various adherends according to technique on transfer foil etc. and decoration configuration based on this technique - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for decorating various kinds of adherends according to technique on a transfer foil etc. and a decorative configuration based on this technique. <P>SOLUTION: In this decorating method according to the technique on the transfer foil etc, a flame containing a silane atom etc. is partially or entirely blown to the surface of various kinds of the adherends such as various plastic molded objects, a plastic film and sheet, using an already known "interface modification device". Then the adhesive or bonding interface intended for transfer is modified so as to achieve the wetting index at not less than 73 dyne/cm. Thus the transfer foil of a varying construction etc. can be certainly bonded to the surface of various kinds of the adherends without applying the different kinds of polymer-based primers as adhesive or bonding assistants. Also, the decorative configuration is based on the technique on the transfer foil etc. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention uses various transfer technologies such as hydraulic transfer technology, thermal transfer technology, vacuum three-dimensional surface decorating technology, insert mold decorating technology, etc. The adherend consisting of wood-based molding materials, various metal moldings, various metal alloy moldings, various plastic moldings, various plastic films, sheets, etc. contains modifier compounds such as silane compounds by a flame (flame) burner. In technology such as transfer foil, which is characterized by applying a decorative layer without applying primers of various configurations that serve as adhesion aids by utilizing technology to modify the interface of the object to be coated through oxidation flame The present invention relates to a method for decorating various adherends based thereon and a decorative structure by the same technology.

  Currently, transfer technologies such as hydraulic transfer technology, thermal transfer technology, vacuum three-dimensional surface decoration technology, insert mold decoration technology, etc. have been developed. Various metal moldings, various metal alloy moldings, various plastic moldings, various plastic films, sheets, and the like are widely used for decorating by transferring.

  By the way, in the decoration methods such as the water pressure transfer technology, the thermal transfer technology, the vacuum three-dimensional surface decoration technology, and the insert mold decoration technology, transfer foils of various configurations are transferred to the adherends of the respective configurations. In doing so, adhesive properties of paper, wood-based molding materials, various metal moldings, various metal alloy moldings, various plastic moldings, various plastic films, sheets, etc., as the adherend, and transfer foils of various configurations, etc. Alternatively, in order to ensure the adhesion characteristics, it is necessary to apply a polymer primer as a high adhesion / high adhesion aid to the adhesion interface or adhesion interface of each adherend. In particular, due to the material characteristics (hard adhesion, etc.) of each material of various adherends and shape factors, it was necessary to pay particular attention to securing adhesion and adhesion with various constituent transfer foils.

  On the other hand, when transferring transfer foils of various configurations using hydraulic transfer technology, thermal transfer technology, vacuum three-dimensional surface decoration technology, insert mold decoration technology, etc., transfer between each adherend and various transfer foils Even in the in-line decoration process, where adhesion and adhesion in the process is relatively easy, there are still cases where it is difficult to ensure adhesion and adhesion to the transfer foil depending on factors such as the material of the various adherends. It was.

  In any case, regardless of whether the forming process of the various adherends and the decorating process for the adherend are in-line processing processes or off-line processing processes, the various adherends and transfer foils of various configurations are used. In order to securely adhere and adhere to each other, prior primer treatment on the various adherends must be said to be an essential requirement.

Accordingly, the present inventor has developed various transfer foils in the decorating methods such as the hydraulic transfer technology, the thermal transfer technology, the vacuum three-dimensional surface decorating technology, and the insert mold decorating technology, especially in the off-line decorating process. In transferring various materials such as paper, wood-based molding materials, various metal moldings, various metal alloy moldings, various plastic moldings, various plastic films, sheets, etc. With regard to securing adhesion or adhesion with transfer foil, etc., when the inventors tried to utilize the "interface modification technology" disclosed in the following patent document that has already been developed and put to practical use, the "interface modification" In order to complete the present invention, it was discovered and confirmed that "Technology" works extremely effectively for the interface modification of various adherends and the improvement of adhesion and adhesion characteristics between the adherends and transfer foils of various configurations. It came.
JP 2003-238710 (Patent No. 3557194)

  The above-mentioned “Patent Document 1” discloses an outline of an interface reforming method and apparatus for a solid substance, which is an interface modifier compound containing a silane atom, a titanium atom, and an aluminum atom, each having a boiling point of 10 A storage tank for storing a fuel gas containing a surface modifier compound at a temperature of from C to 105C, a transfer unit for transferring the fuel gas to the injection unit, and an injection unit for blowing a flame of the fuel gas An interfacial reforming technique that activates the processing section by preparing an interfacial reforming apparatus including a (burner), spraying silicic acid flame or the like entirely or partially on the surface of a solid material. It is disclosed.

  However, the above-mentioned Patent Document 1 only describes a surface modification method common to various solid substances for interfacial modification of each solid substance, and is a specific problem to be solved by the present invention. Using transfer technology such as water pressure transfer technology, thermal transfer technology, vacuum three-dimensional surface decoration technology, insert mold decoration technology, etc., transfer foils made of various configurations can be used as paper, wood-based molding materials. In regard to techniques for transferring and decorating various metal moldings, various metal alloy moldings, various plastic moldings, various plastic films and sheets, etc., specific methodologies relating to ensuring adhesion and adhesion at each adherend interface There is no technical disclosure.

  The present invention is conventionally essential in the transfer process of transfer foils of various configurations based on various transfer technologies by utilizing the basic technology related to the interface modification of the surface of various solid materials disclosed in Patent Document 1. It is intended to ensure adhesion and adhesion at the various adherend interfaces without performing any pre-primer treatment on the various adherends. Details of the present invention will be described below.

  As described above, the present invention utilizes the basic technique relating to the surface modification of various solid materials disclosed in Patent Document 1 in the transfer process of transferring the transfer foils having various configurations onto various adherends. In addition, the surface of various adherends is essentially modified and activated so that the adhesion at the various adherend interfaces can be performed without any prior primer treatment on the various adherends, which has been essential in the past.・ To ensure adhesion.

First, a methodology for interfacial modification of various adherends will be described. FIG. 1 is a flowchart for explaining an outline of an interface reforming apparatus according to the present invention, which will be described based on the flowchart.
1 is an interface modifier compound containing a silane atom, a titanium atom, and an aluminum atom, and includes an alkylsilane compound, an alkoxysilane compound, a siloxane compound, a silazane compound, and an alkyltitanium compound. , A storage tank portion 102 for storing an interfacial modifier compound 101 selected from the group consisting of an alkoxytitanium compound, an alkylaluminum compound, and an alkoxyaluminum compound, and a jetting portion (burner) that is vaporized by the heating means 103 Compressor for supplying a transfer path 105 for transferring to 104, a storage tank 106 for fuel gas such as propane gas and LPG gas, and air for carrying the fuel gas combustion air and the interfacial modifier compound And an air source 107. A first sub-mixer 108 is also provided in the transfer path 105 for uniformly mixing the vaporized interface modifier compound and air mixed gas and the fuel gas delivered from the storage tank 106. The second main mixer 109 is configured. Further, the delivery tanks 102 for storing the interfacial modifier compound 101, the compressed air source 107 for supplying air, and the delivery destination outlets of the fuel gas storage tank 106 have respective delivery flow rates. Flow control valves with flowmeters 110, 111, and 112 for controlling are respectively provided to constitute an interface reformer. Next, the detail of each said main structural member (part) is demonstrated.

"Storage tank for interfacial modifier compound"
As shown in FIG. 1, a heating means 103 such as a heater for heating is provided below the interfacial modifier compound storage tank 102, and the interfacial modifier compound 101 is liquid at room temperature and normal pressure. It is configured to vaporize. The heating means 103 is controlled by a CPU (not shown). That is, the CPU is electrically connected to each sensor such as a liquid quantity sensor of the interfacial modifier compound, a liquid temperature sensor, etc., and the liquid quantity and the liquid temperature of the interfacial modifier compound are within a specified range. The heating means is controlled to fit.
In the present invention, an example in which a liquid interface modifying compound is used is given, but a gas or solid compound can also be used. When a gaseous interfacial modifier compound is used, the interfacial modifier compound storage tank section does not need to be provided with a heater, but instead may be provided with a flow regulating means such as a pressure regulating valve. . Further, when using a solid interfacial modifier compound, for example, the liquid transportation in which the solid compound is dissolved in a solvent or melted with heat and piped from the storage tank of this example to the vicinity of the flame of the burner. Interfacial reforming can also be performed by passing through a pipe and feeding directly into a burner.

"Transportation part"
As shown in FIG. 1, the transfer unit 105 has a “pipe” structure, and as shown in FIG. 1, the vaporized interface modifier compound supplied from the compressed air source 107 and delivered from the storage tank 102. The first submixer 108 for mixing the fuel gas, the mixed gas mixed by the first submixer 108, and the second gas for uniformly mixing the fuel gas delivered from the fuel gas storage tank 106. The main mixer 109 is provided.

"Injection part (burner)"
As shown in FIG. 1, the injection unit (burner) 104 burns the combustion gas sent through the transfer unit 105 and sprays the obtained flame 113 onto the surface to be reformed (not shown). The reformed surface is subjected to interfacial reforming, and the state of the flame 113 includes the flow rate of the vaporized interfacial modifier compound 101, the amount of combustion air sent from the compressed air source 107, and the fuel gas. Each flow rate of the amount of fuel gas delivered from the storage tank 106 is optimally adjusted by adjusting the opening degree of the flow rate adjustment valves 110, 111, 112 with flow meters provided in the respective gas flow paths. The The type of the burner is not particularly limited, and may be any of a premix burner, a diffusion burner, a partial premix burner, a spray burner, an evaporation burner, and the like. Further, the form of the burner is not particularly limited.

The interface modifier compound is not particularly limited as long as it is a compound containing a silane atom, a titanium atom or an aluminum atom and can burn in a flame of a general gas burner. In view of easy availability and handling, for example, a group consisting of an alkylsilane compound, an alkoxysilane compound, a siloxane compound, a silazane compound, an alkyl titanium compound, an alkoxy titanium compound, an alkyl aluminum compound, and an alkoxy aluminum compound. It is preferable that it is at least one compound selected from.
Preferred examples of the alkylsilane compound include methylsilane, dimethylsilane, trimethylsilane, tetramethylsilane, tetraethylsilane, dimethyldichlorosilane, dimethyldiphenylsilane, diethyldichlorosilane, diethyldiphenylsilane, methyltrichlorosilane, methyltriphenylsilane, and dimethyl. Substituents such as monosilane compounds which may have substituents such as diethylsilane, disilane compounds which may have substituents such as hexamethyldisilane, hexaethyldisilane and chloroheptamethyldisilane, and octamethyltrisilane A trisilane compound which may have
Preferred examples of the alkoxysilane compound include methoxysilane, dimethoxysilane, trimethoxysilane, tetramethoxysilane, ethoxysilane, diethoxysilane, triethoxysilane, tetraethoxysilane, methyltrimethoxysilane, dimethyldimethoxysilane, and trimethylmethoxysilane. , Methyltriethoxysilane, dimethyldiethoxysilane, trimethylethoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, dichlorodimethoxysilane, dichlorodiethoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, trichloromethoxysilane, trichloroethoxysilane , Triphenylmethoxysilane, triphenylethoxysilane and the like alone or in combination of two or more .
Preferred examples of the siloxane compound include tetramethyldisiloxane, pentamethyldisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexa Examples thereof include siloxane.
Preferable examples of the silazane compound include hexamethyldisilazane. Moreover, as a suitable example of an alkyl titanium compound, tetramethyl titanium, tetraethyl titanium, tetrapropyl titanium, etc. are mentioned. Preferable examples of the alkoxytitanium compound include titanium methoxide and titanium ethoxide. Preferable examples of the alkyl aluminum compound include trimethyl aluminum, triethyl aluminum, tripropyl aluminum and the like. Preferable examples of the alkoxyaluminum compound include aluminum methoxide, aluminum ethoxide and the like. These compounds may be used alone or in combination.
Among the above preferable examples, silane compounds, alkoxysilane compounds, siloxane compounds, and silazane compounds are more preferable because they are easy to handle, easily vaporized, and easily available.

  Next, an example of interfacial modification of a polyester terephthalate (PET) sheet as an adherend based on a specific example of thermal transfer technology using the interfacial reformer shown in FIG. 1 will be described with reference to FIGS. The invention will be described.

  FIG. 2 is a schematic diagram showing a visual and exemplarily representative configuration example of a thermal transfer foil for forming a hard coat layer having a pattern, in which 21 is a transfer paper, 22 is a release layer, and 23 is a hard coat. Reference numeral 24 denotes a printing ink layer (design layer), and reference numeral 25 denotes a heat set layer, which is configured as a hot melt adhesive layer in this example (FIG.), And constitutes a thermal transfer foil 20 for forming a hard coat layer.

  FIG. 3 is a schematic view showing a configuration example of a polyester resin sheet (backer) on the side to which the heat transfer foil for forming a hard coat layer shown in FIG. 2 is thermally transferred. The polyester sheet is used for furniture, for example, a table countertop. It is configured for cosmetic use. In the figure, reference numeral 30 denotes a polyethylene terephthalate resin sheet (hereinafter abbreviated as “PET sheet”) having a three-layer coextrusion cast molding configuration, and an amorphous PET resin (hereinafter abbreviated as “A-PET”) 32. Is held between amorphous glycol-modified PET resins (hereinafter abbreviated as “PET-G”) 31 and 31. The thermoplastic GAG-PET with the above three-layer structure has a relatively high heat resistance and excellent secondary processing characteristics such as bending, but it is difficult for PET resin to adhere to other materials. It is still an adhesive property. Therefore, even if the thermal transfer foil 20 for forming a hard coat layer shown in FIG. 2 is directly transferred to the GAG-PET sheet having this configuration by a thermal transfer roll in an offline process, the transfer foil 20 and the GAG-PET sheet 30 It is extremely difficult to secure adhesion of the material by combining the off-line process and GAG-PET as a difficult-to-adhere material. Incidentally, in the offline process, there are cases where various additives existing in the GAG-PET sheet, which is a pre-molded product, are preed out on the surface of the sheet. There are still some cases where it is difficult to ensure sufficient adhesive strength even if a primer is used.

  Therefore, in the present invention, when the modified surface of the GAG-PET sheet 30 shown in FIG. 3 was subjected to flame treatment with a silane-based modifier compound using the interface reformer 100 shown in FIG. As visually illustrated in FIG. 4, an interface modified layer (silicon dioxide film layer) 41 having a film thickness of several nanometers to several tens of nanometers could be formed. Incidentally, the wetting index (JIS K6768) before the interface modification of the GAG-PET sheet of the three-layer structure was 35 dyne / cm, whereas the wetting index after the flame treatment using the interface reforming apparatus ( JIS K6768) was 73 dyne / cm or more, and the modified surface was remarkably activated as compared with before the interface modification. Moreover, when the water contact angle was measured, it became 0 ° as much as possible, and a super hydrophilic phenomenon was exhibited.

  Furthermore, the heat-set layer (hot-melt layer) 25 surface of the thermal transfer foil 20 for forming a hard coat layer illustrated in FIG. 2 and an interface modified layer (silicon dioxide film) of the GAG-PET sheet having a three-layer structure shown in FIG. When the layer is bonded to the surface and heat-transferred by a thermal transfer roll device (not shown), it becomes possible to produce a sheet for a fixture or table countertop having sufficient adhesive strength as intended. It was.

  In any case, like in-mold transfer molding, various molding methods (substrate) molding and transfer foil transfer other than molding the product molding and transfer at the same time as molding, In off-line molding, in addition to the inherently difficult adhesion and difficult adhesion properties of materials, transfer in the offline process of the transfer foil to various adherends (substrates) is combined, and various types of transfer foils with various configurations are covered. Adhesiveness to the adherend (base material) is obstructed. As described above, the interface reformer 100 according to the present invention is effectively used for the reforming interface of various adherends (base materials). By improving the quality, it becomes possible to activate all adherend surfaces (interfaces), which are said to be difficult adhesion and adhesion, and a polymer primer as an adhesion / adhesion aid that was conventionally required It is possible to save processing reliably and reliably. Adhesion or adhesion at the adhesion interface can be reliably performed, and in addition, it is possible to provide time and economic merit because it eliminates the polymer plummer that was previously required. It became.

[Example]: Example of transfer based on thermal transfer technology Preparation of Transfer Foil A transfer foil having a printed pattern having the configuration shown in FIG. 2 and having a width of 1270 mm, a total thickness of 30 μm, and a film length of 600 m was prepared as the transfer foil. The structure of the transfer foil in the figure is: transfer paper, 21: 25 μm, release layer, 22 + hard coat layer, 23 + printing layer, 24 + hot melt adhesive layer, 25: 5 μm, total thickness of 30 μm.
2. Preparation of Backer Next, a backer 600m was prepared as a GAG-PET sheet made of a three-layer coextrusion casting having a total thickness of 300 μm and a width of 1270 mm shown in FIG.
3. Next, the surface of the GAG-PET sheet 30 shown in FIG. 3 is subjected to interface modification using the interface reformer 100 shown in FIG. For the purpose of illustration, a silicon dioxide film having an average film thickness of 10 nanometers (nm) was obtained on the adherend surface of the GAG-PET sheet 30. The interface modification of the GAG-PET sheet 30 was performed in accordance with the apparatus and method disclosed in the following patent document that has been already proposed by the present inventors. The interface modifier compound used in the reformer was hexamethyldisiloxane, and the combustion gas was propane gas. The wetting index (JIS K6768) of the modified surface after the interface modification was 73 dyne / cm or more.
JP 2006-16685 A 4). Product Finishing by Thermal Transfer And finally, with a thermal transfer roll device (not shown), the surface of the hot-melt adhesive layer 25 of the thermal transfer foil 20 for hard coat layer formation having the above-described configuration shown in FIG. 2 and the backer shown in FIG. Bonding and bonding via a thermal transfer roll and a cooling roll (both not shown) to join the modified surface 41 of the GAG-PET sheet of the above, a high-quality cosmetic use hardware such as a table counter top A coat layer was obtained. The set temperature of the thermal transfer roll in the thermal transfer roll apparatus (not shown) was 120 ° C., and the transfer speed in the apparatus was 5 m / min.

Schematic diagram of interface reformer Typical configuration example of thermal transfer foil for hard coat layer formation Configuration example of polyester resin sheet (backer) Interfacially modified polyester resin sheet (backer)

Explanation of symbols

101: Interface modifier compound 102: Storage tank unit 103: Heating means 104: Injection unit (burner)
105: Transfer path 106: Storage tank 107: Compressed air source 108: Submixer 109: Main mixer 110: Flow rate adjustment valve with flow meter 111: Flow rate adjustment valve with flow meter 112: Flow rate adjustment valve with flow meter 113: Flame 20: Hard Coat layer forming thermal transfer foil 21: transfer paper 22: release layer 23: hard coat layer 24: printing ink layer (design layer)
25: Heat set layer 30: GAG-PET sheet 31: PET-G
32: A-PET
41: Interface modification layer (silicon dioxide film layer)

Claims (6)

  Paper, wood-based molding materials, various metal moldings, various metal alloy moldings, various plastic moldings, various plastic films, sheets, etc. are used as adherends, and transfer foils with various configurations on the adherends are processed offline. A modifier compound containing a silane atom, a titanium atom, or an aluminum atom on each adherend without applying a polymer primer as an adhesion assistant. A flame of a fuel gas containing a modifier compound having a boiling point of 10 ° C. to 105 ° C. is blown over the entire surface or a part thereof so that the surface of each adherend has a wetness index of 73 dny / cm or more. Decorative media decoration technology for transfer foils, etc., characterized by transferring or dressing decorative media made up of transfer foils of various configurations using various transfer technologies after surface activation treatment Various adherend decorative-based methods.   Paper, wood-based molding material, various metal moldings, various metal alloy moldings, various plastic moldings, various plastic films, decorated with a decoration method using transfer foils of various configurations according to claim 1 A decorative structure composed of a transfer foil or the like such as a sheet.   A technique for decorating various adherends based on a technique such as a transfer foil, wherein the technique such as the transfer foil according to claim 1 is a hydraulic transfer technique.   2. A method for decorating various adherends based on a transfer foil or the like, wherein the transfer foil or the like according to claim 1 is a thermal transfer technology.   2. The method of decorating various adherends based on the transfer foil or the like, wherein the transfer foil or the like according to claim 1 is a vacuum three-dimensional surface decoration technology.   A technique for decorating various adherends based on a technique such as a transfer foil, wherein the technique such as the transfer foil according to claim 1 is an insert mold decoration technique.

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