JP2000006595A - Manufacture of water pressure transfer sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a manufacturing method of a water pressure transfer sheet by which a precise printing pattern being approx. the same as a normal gravure printing can be obtained on a water-soluble or water-swellable water pressure transfer film comprising a PVA film, and therefore, a water pressure transfer can be more precisely performed. SOLUTION: An ink release layer 2 is formed on a plastic film or a paper 1, and a pre-transfer sheet A wherein a masking pattern 4 and a printing pattern 5 are formed, is constituted. A water pressure transfer film 7 is superposed on the pre-transfer sheet A in a manner to be closely joined to the printing pattern 5, and the masking pattern 4 and the printing pattern 5 are pre- transferred to the water pressure transfer film 7 by pressing and heating, and then, the pre-transfer sheet A is separated from the water pressure transfer film 7, and thus, a printing pattern 5 on which the masking is applied, is formed on the water pressure transfer film 7.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-soluble or water-swellable hydraulic transfer film made of a PVA film or the like, which is used for precise printing substantially equivalent to ordinary gravure printing. The present invention relates to a method for manufacturing a hydraulic transfer sheet that can obtain a pattern and thus can perform hydraulic transfer more precisely. [0002] The following patent documents relate to hydraulic transfer technology and curved surface printing technology. JP-A-53-27808
JP-A-55-123473, JP-A-56-112
No. 95, JP-A-56-19787, JP-A-56-19
No. 788, JP-A-56-111692, JP-A-57-11692.
39964, JP-A-57-45090, JP-A-57-45090
-125088, JP-A-58-31754, JP-A-58-101091, JP-A-58-167165,
JP-A-61-58798, JP-A-61-143961
JP-A-61-130081, JP-A-61-283
No. 600, JP-A-4-122647, JP-A-5-84
883, JP-A-5-84884, JP-A-5-848
No. 85, JP-A-5-84886, JP-A-5-2939
No. 55, JP-A-6-166300, JP-A-6-171
195, JP-A-7-40527, JP-A-7-760
No. 67, JP-A-7-81037, JP-A-7-1173
No. 26, JP-A-7-117327, JP-A-7-117
No. 328, JP-A-7-125177, JP-A-7-13
No. 7229, JP-A-7-178888, JP-A-7-1
95563, JP-A-7-276898, JP-A-8-
20102, JP-A-8-238897, JP-A-8-
238898, JP-A-8-39998. In the hydraulic transfer method, a hydraulic transfer sheet is floated on a water surface with a print pattern facing upward, the transfer surface of a transfer object is submerged in accordance with the print pattern, and the print pattern is transferred by water pressure generated at that time. It is transferred to the transfer surface of the body and can perform complicated curved surface printing. Flow water from one end into the water tank and overflow from the other end to make a gentle flow, draw out the hydraulic transfer sheet from the raw roll, float the hydraulic transfer sheet on the water surface with the printing pattern up, and at the same speed as the flow of water in the water tank The transfer surface of the transfer-receiving body that is fed and supported by the transport means above the water tank is formed into a print pattern at a timing when the hydraulic transfer film swells in water and the print pattern is easily separated from the hydraulic transfer film. And submerge them together,
The printing pattern is transferred to the transfer surface of the transfer object using water pressure. The hydraulic transfer film may swell and adhere when the transfer target is pulled up, or may dissolve in water after transferring the print pattern to the transfer surface of the transfer target. In some cases, mercury is charged into a water tank and then filled with water to hydraulically transfer the wooden object. The hydraulic transfer sheet used in the hydraulic transfer method is as follows.
Using a water-soluble or water-swellable hydraulic transfer film composed of a PVA film or the like, forming a print pattern of, for example, a marble pattern in color printing using a water-insoluble ink on a continuous hydraulic transfer film, and forming a roll. Wind up. With respect to the hydraulic transfer sheet, among the technical documents described above, in particular, JP-A-55-123473 and JP-A-60-143961.
JP-A-61-58798, JP-A-61-1300
No. 81, JP-A-61-283600, JP-A-7-40
No. 527, JP-A-7-117327, JP-A-7-11
No. 7328, JP-A-8-238897, JP-A-8-2
No. 38898 is disclosed. [0005] The initial hydraulic transfer method was:
Precise printing could not be performed at all for various reasons. The cause is due to insufficient reproducibility of the print pattern of the hydraulic transfer film, poor coverage of the transfer object, and insufficient hydraulic transfer capability that required re-adhesion of the printed pattern layer. ing. These have been improved from various viewpoints as seen in the above-mentioned patent documents. [0006] The hydraulic transfer film has a remarkable swelling and extensibility. For this reason, improvements have been made regarding the inability to perform precise printing. In other words, if the hydraulic transfer film is floated on water and left free stretching, the printed pattern expands and the pattern is deformed. For this reason, a device has been devised to lock both edges of the hydraulic transfer film with the floats of the hydraulic transfer film so as to suppress the extension of the hydraulic transfer film to a certain extent. Further, when the transfer object is a long object, the degree of swelling and extension increases toward the downstream side, so that the transfer speed of the transfer object supported by the transfer means is adjusted to the flow speed of the hydraulic transfer sheet, and the transfer object is The swelling and extension of the same ratio between the surface to be transferred and the submerged position of the hydraulic transfer film was devised. In addition, various devices were devised. [0007] Nevertheless, the conventional hydraulic transfer method can still only perform about printing, and is therefore suitable for printing wood grain patterns and marble patterns, and cannot perform precise printing of various designs. . The reason is still due to the remarkable swelling extensibility and extensibility sensitive to temperature and humidity of the water-soluble or water-swellable hydraulic transfer film composed of a PVA film or the like. More specifically, when gravure printing is performed on a raw roll of a PVA film, the film absorbs moisture and extends irreversibly as it goes downstream,
This is because, when the water-soluble paint is masked, it swells irregularly, and the four-color print pattern of YMCK is largely displaced. The present invention has been devised in view of the above points, and provides a water-soluble or water-swellable hydraulic transfer film made of a PVA film or the like with a precise print pattern substantially equivalent to that of ordinary gravure printing. Accordingly, it is an object of the present invention to provide a method of manufacturing a hydraulic transfer sheet capable of performing hydraulic transfer more precisely. [0009] The first invention of the present application is to form an ink release layer on a continuous or sheet-like plastic film or paper, and to form a water-insoluble or oil-based ink on the ink release layer. Constituting a pre-transfer sheet formed by forming a print pattern of one-color printing or multi-color printing, a water-soluble or water-swellable hydraulic transfer film made of a continuous or sheet-like PVA film, Overlaid on the pre-transfer sheet so as to be in close contact, pressed and heated to pre-transfer the print pattern to the hydraulic transfer film, and then separating the pre-transfer sheet from the hydraulic transfer film, to the hydraulic transfer film. An object of the present invention is to provide a method of manufacturing a hydraulic transfer sheet, wherein the printing pattern is formed. The second invention of the present application is directed to a method for forming an ink release layer on a continuous or sheet-like plastic film or paper, the method comprising forming a masking pattern made of a water-soluble paint on the ink release layer. A pre-transfer sheet formed by forming a single-color printing or a multi-color printing pattern of a water-insoluble or oil-based ink on the masking pattern, and forming a continuous or sheet-like PVA film or the like. Hydrostatic transfer film of water-soluble or water-swellable, overlaid on the pre-transfer sheet in close contact with the print pattern, pressed and heated to pre-transfer the masking pattern and the print pattern to the hydraulic transfer film, Then, the pre-transfer sheet is separated from the hydraulic transfer film, so that the printing masked on the hydraulic transfer film is printed. There is provided a method for producing a hydraulic transfer sheet and forming the turn. [0011] The third invention of the present application provides a method for producing a hydraulic transfer sheet, which comprises pre-transferring a print pattern formed on the pre-transfer sheet of the invention to a film for hydraulic transfer and coating with an activator. Things. [0012] A fourth invention of the present application provides a method for manufacturing a hydraulic transfer sheet, wherein the printing pattern is formed after the ink release layer of the invention is overcoated with an activator for activating the printing pattern. Is what you do. [0013] The fifth invention of the present application is directed to a pre-transfer sheet according to the invention, in which an activator for activating the print pattern is further coated on the print pattern to activate the print pattern, and the hydraulic pressure of the print pattern is increased. An object of the present invention is to provide a method for producing a hydraulic transfer sheet, which is pre-transferred to a transfer film. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for producing a hydraulic transfer sheet according to the present invention will be described with reference to FIG. In the method of manufacturing a hydraulic transfer sheet of the present invention, first, a pre-transfer sheet A shown in FIG. 1 (a) is manufactured, and the pre-transfer sheet is overlapped with a hydraulic transfer film, pressed and heated, and is shown in FIG. This is for producing a hydraulic transfer sheet B. The details will be described below. First, as shown in FIG. 1 (a), a release layer 2 is formed on a continuous or sheet-like plastic film or paper 1 capable of temporarily withstanding the heating temperature during iron coating, and printing is performed on the release layer 2. An active layer 3 formed by applying a thin film of an activator for activating a pattern is formed, a masking pattern 4 made of a water-soluble paint is formed on the active layer 3, and the active layer 3 is formed on the release layer 3 and the masking pattern 4. Next, a pre-transfer sheet A in which a printing pattern 5 of one-color printing or multi-color printing of a water-insoluble or oil-based ink is formed, and an active layer 6 is further formed. Subsequently, continuous or sheet-like PVA
A water-soluble or water-swellable hydraulic transfer film made of a film or the like is placed on the pre-transfer sheet so as to be in close contact with the print pattern side, passed through a pair of hot rolls, pressed and heated (not shown). Then, the pre-transfer sheet is separated from the hydraulic transfer film. As a result, FIG.
As shown in (b), the masking pattern 4 and the printing pattern 5 and the like can be pre-transferred to the hydraulic transfer film 7 satisfactorily to form a precise masked precise print pattern on the hydraulic transfer film. can do. According to the present invention, in order to produce a continuous pre-transfer sheet A, a release layer 2, an active layer 3, a masking pattern 4, a printing pattern 5, and an active layer 6 are formed on a continuous plastic film or paper 1. The production of the pre-transfer sheet A by forming is preferably performed by one gravure printing machine. At this time, the pre-transfer sheet A is wound as an original roll. However, the formation of the release layer 2 and the formation of the active layer 3 may be performed in separate coating lines. The active layer 3 may not be in the stage of manufacturing the pre-transfer sheet A, and may be coated after transferring the printing pattern 5 and the masking pattern 4 from the hydraulic transfer sheet A to the hydraulic transfer film 7. In the production of the sheet-shaped pre-transfer sheet A, a release layer 2 and an active layer 3 are formed on a sheet-shaped plastic film or paper 1, cut into a predetermined size, stored in a bag in a laminated state, and sealed. In advance, when performing hydraulic transfer, take out and print a print image with a printer using an ink ribbon for thermal transfer or a thermal sublimation type ink ribbon, or an ink jet printer, and further superimpose this print sheet and the film for hydraulic transfer. Alternatively, it may be manufactured by peeling off the plastic film or paper 1 after ironing. As described above, according to the method of manufacturing a hydraulic transfer sheet of the first invention of the present application, since a printing pattern is formed on a plastic film or paper having shape stability, hydraulic transfer is possible. It is possible to print at a higher speed than forming a print pattern on a film for use, and to transfer the print pattern from a plastic film or paper to a film for hydraulic transfer.
The remarkable swelling extensibility and extensibility sensitive to temperature and humidity do not adversely affect, so that a precise print pattern substantially equivalent to that of normal gravure printing can be obtained, so that hydraulic transfer can be performed more precisely. According to the method of manufacturing a hydraulic transfer sheet of the second invention of the present application, since a masking pattern and a print pattern are formed on a plastic film or paper having shape stability, compared to forming a print pattern on a hydraulic transfer film. It can print at high speed and transfer the printing pattern and masking pattern from the plastic film or paper to the hydraulic transfer film, so the hydraulic transfer film is remarkably swellable and extensible and sensitive to temperature and humidity. The extensibility is not adversely affected, so that a precise masked printing pattern substantially equivalent to that of normal gravure printing can be obtained, so that hydraulic transfer can be performed more precisely. According to the method for manufacturing a hydraulic transfer sheet of the third and fourth inventions of the present application, since the printing pattern formed on the pre-transfer sheet and the tackiness of the masking pattern can be secured, the print pattern from the pre-transfer sheet to the hydraulic transfer film can be obtained. , And the masking pattern can be reliably pre-transferred.
According to the method of manufacturing a hydraulic transfer sheet of the fifth invention of the present application,
Since the adhesiveness of the printing pattern and masking pattern formed by transferring from the pre-transfer sheet to the hydraulic transfer film can be ensured, it is possible to surely hydraulically transfer the printing pattern and the masking pattern to the transfer surface of the object to be transferred. it can.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a method of manufacturing a hydraulic transfer sheet according to an embodiment of the present invention, in which (a) shows a model cross-sectional view of a pre-transfer sheet, and (b) shows a cross-sectional view. 1 shows a cross-sectional view of a model of a hydraulic transfer sheet. [Description of Signs] 1 ... plastic film or paper 2 ... release layer 3 ... active layer 4 ... masking pattern 5 ... printing pattern 6 ... active layer 7 ... hydraulic transfer Film A: Pre-transfer sheet B: Hydraulic transfer sheet

Claims (1)

Claims: 1. An ink release layer is formed on a continuous or sheet-like plastic film or paper, and the ink release layer is subjected to one-color printing or multi-color printing of a water-insoluble or oil-based ink. A pre-transfer sheet comprising a pattern is formed, and a continuous or sheet-like water-soluble or water-swellable hydraulic transfer film made of a PVA film or the like is attached to the pre-transfer sheet so as to adhere to the print pattern. , Press and heat to pre-transfer the print pattern onto the hydraulic transfer film, and then separate the pre-transfer sheet from the hydraulic transfer film to form the print pattern on the hydraulic transfer film. A method for producing a hydraulic transfer sheet. 2. An ink release layer is formed on a continuous or sheet-like plastic film or paper, and a masking pattern made of a water-soluble paint is formed on the ink release layer.
A pre-transfer sheet formed by forming a single-color or multi-color printing pattern of a water-insoluble or oil-based ink on the ink release layer and the masking pattern, and is a continuous or sheet-shaped PVA film A water-soluble or water-swellable hydraulic transfer film composed of, for example, is placed on the pre-transfer sheet so as to be in close contact with the print pattern, and the masking pattern and the print pattern are pressed and heated to form a hydraulic transfer film. A method for producing a hydraulic transfer sheet, comprising: performing a pre-transfer, and then separating the pre-transfer sheet from the hydraulic transfer film to form a print pattern masked on the hydraulic transfer film. 3. A hydraulic transfer sheet, characterized in that a print pattern formed on the pre-transfer sheet according to [1] or [2] is pre-transferred to a hydraulic transfer film and coated with an activator. Manufacturing method. 4. A hydraulic pressure, wherein a print pattern is formed after the ink release layer according to claim 1 or 2 is overcoated with an activator for activating a print pattern. Transfer sheet manufacturing method. 5. The printing pattern formed on the pre-transfer sheet according to claim 1 or 2 is further coated with an activator for activating the printing pattern to activate the printing pattern. And a method of pre-transferring the print pattern onto a hydraulic transfer film.