JPS62284791A - Print protective member with cover sheet - Google Patents

Abstract

PURPOSE:To prevent troubles in a roller heater from occurring due to an erroneous operation and prevent the surface of a transfer layer from being contaminated, by providing a cover sheet capable of covering the transfer layer. CONSTITUTION:A cover sheet 3 is adhered to an end part of a transfer layer 1. A material used for the cover sheet may be a fabric, a plastic film or the like. Protection of a print by using this print protective member with the cover sheet is carried out by inserting the print between the transfer layer and the cover sheet so that the printed side of the print makes contact with the transfer layer, and serving the print and the protective member including the cover sheet to a laminator for heating and applying a pressure. Thus, luster, light resistance, water resistance and abrasion resistance can be imparted to a recorded image, thereby obtaining an image having high clearness and excellent preservation stability. In addition, the trouble of contamination of the laminator due to exposure of the transfer layer during lamination can be obviated. Besides, the insertion of the print between the transfer layer and the cover sheet prevents slippage between the transfer layer and the print or contamination of the transfer layer with dust or the like from occurring.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Industrial Field of Application] The present invention relates to a method of printing using a recording liquid, particularly a printed matter formed by recording an image on paper or the like using an inkjet recording method. The present invention relates to a print protection member suitable as a member for lamination processing of prints.

[Conventional technology]

The inkjet recording method is a recording method in which recording is performed by depositing recording liquid onto the recording material such as small paper from the orifice of the recording head, and it generates little noise and does not require special fixing treatment. This is the fifth recording method that can perform high-speed recording and full-color recording.

The recording liquid used in this inkjet recording method is generally formed from a recording agent such as a dye and water as a solvent or a mixture of water and various solvents.

As described above, in the inkjet recording method, since an aqueous recording liquid is used, the recording material used for recording is required to have excellent recording liquid absorption and fixing properties.

In particular, in multicolor inkjet recording using recording liquids of two or more colors, the amount of recording liquid that adheres to the recording material is large, so the absorption and consistency of the recording liquid are particularly excellent. This is required.

Known recording materials with such excellent properties include those in which a recording liquid receiving layer made of a porous material with excellent recording liquid absorption and fixing properties is provided on a base material such as paper. .

On the other hand, in the case of a recording material having a porous recording liquid receptive layer, the surface of the recording material lacks gloss, and even if the image is clearly recorded, the image clarity f! : This has been a problem that must be solved, especially when a multicolor image is recorded by an inkjet recording method to form a color print.

Moreover, in prints formed in this way, water-soluble dyes are mainly used as recording agents.
The water resistance, light resistance, and abrasion and rust resistance of recorded images were not always sufficient.

For this purpose, in order to impart the above-mentioned characteristics to the recorded image, it has been possible to form a bond on which an image is formed with a recording liquid on a recording paper, and to laminate the recording surface with a film containing an additive such as an ultraviolet absorber.

Lamination processing uses acrylic resin, polystyrene resin, polyester resin, etc. on a base material such as paper, cloth, or plastic.
A print protection member made of a thermoplastic resin such as polyethylene resin mixed with an ultraviolet absorber, etc. and carrying a transfer layer thereon, the transfer layer side being attached to the image forming surface and pressure-bonded, and the above-mentioned base material. This is a method in which the transfer layer is left on the recording material to impart gloss, water resistance, light resistance, abrasion resistance, etc. to the recording surface.

At this time, the thermoplastic resin used for the transfer layer has anti-blocking properties that prevent the printing from collapsing even when stacked when storing and transporting multiple laminated prints. At the same time, performance such as folding resistance, which prevents the transfer layer from being destroyed even if the transfer layer is damaged, must also be improved.

Conventionally, the transfer layer was simply applied to the base material, but if left as is, the transfer layer would adhere to the laminator's roller heater due to incorrect operations such as exposing the heat-melting transfer layer and laminating. Such troubles may occur, and the transfer layer is likely to be contaminated.

The present invention has been made in view of the above-mentioned problems, and its purpose is to solve the above-mentioned problems, and to provide a non-protection sheet with a cover sheet that prevents troubles with the roller heater due to erroneous operation and prevents the surface of the transfer layer from getting dirty. The goal is to provide parts.

[Means to solve problems]

The above-mentioned object of the present invention is to provide a substrate that can be peeled off from the substrate (
This is achieved by a print protection member with a cover sheet, in which a transfer layer is provided and a cover sheet capable of covering the transfer layer is provided.

A cross-sectional view of a preferred embodiment of the cover sheet-equipped protection member of the present invention is shown in FIG. In the figure, 1 is a transfer layer that is transferred and laminated on the image forming surface using a recording liquid, 2 is a base material that supports the transfer layer 1, and 3 is a cover sheet. The cover sheet 3 is adhered to the end surface of the transfer layer 1 with an adhesive.

Further, FIGS. 2 and 3 are cross-sectional views of another embodiment of the present print protection member, and in FIG. 2, the cover sheet 3 is
Wi is bonded to a part of the surface (back surface) on which the transfer layer 1 is not provided, and in FIG.
The embodiments shown in FIGS. 0M2 and 3, which have been applied, have the advantage that all of the transfer layer up to the edges can be transferred and used.

The transfer layer 1 is designed to be peelable from the base material 2 when it is transferred and laminated onto the recorded image surface of a print formed by recording an image on a recording material such as paper with a recording liquid. It is carried by 2.

The transfer layer 1 is supported on the base material 2 and is laminated onto the print so that it can directly cover the recorded image to be laminated, and is applied to the recorded image surface by pressure bonding and/or fusing, etc. It is attached to the top and remains there, acting as a protective layer for the recorded image. By the way, after the base material 2 is pasted on the transfer layer or the recorded image, it is peeled off from the transfer layer.
Therefore, as described above, only the transfer layer 1 remains on the recorded image as a protective layer for the recorded image.

The transfer layer 1 has various shapes and sizes corresponding to the shape and size of the recorded image covered by the transfer layer. On the other hand, the base material 2 has a shape and size that can support at least the transfer layer 1.

The base material of the print protection member with a cover sheet of the present invention may be paper, cloth, plastic film, etc., coated with a release agent having various peeling properties such as silicone resin, or mylar film. It is possible to use films such as polypropylene and urethane films, which themselves have peeling properties for the transfer layer listed below.

As mentioned above, the transfer layer can be laminated with sufficient adhesive force on the surface of the recorded image, and can provide waterproofness to the recorded image.
, ethyl cellulose, vinyl acetate resin and its derivatives, which can impart properties such as abrasion resistance and solvent resistance,
Formed mainly from thermoplastic resin #a such as polyethylene, ethylene-vinyl acetate copolymer, acrylic resin, polystyrene and its copolymer, polyisobutylene, polyvinyl butyral, hydrocarbon resin, polypropylene, polyamide resin, polyester resin, etc. , the transfer layer 1 contains an ultraviolet absorber and the like.

Note that the transfer layer 1 is transferred to the print and the base material 2 is
By forming the outer surface of the transferred layer 1 that has been peeled off to be glossy at the end of the track, gloss can be imparted to the surface of the recorded image surface. Furthermore, various additives such as waxes, plasticizers, tackifiers, and antioxidants may be added to the transfer layer 1.

The protective member of the present invention having such a structure is made of the above-mentioned base material and the material capable of forming the transfer layer, and has properties such as releasability between the base material and the transfer layer, and removability between the transfer layer and the surface of the print to be protected. The material for forming the transfer layer is selected appropriately in consideration of matching, etc., and the material for forming the transfer layer is coated on the base material selected in this way using a known method such as the barcode method, blade coating method, reverse roll coating method, or gravure roll coating method. It can be formed by laminating layers.

In addition, the protective member of the present invention covers one side (image side) of the
If the transfer layer is to be attached to the printed material by heat treatment, the shrinkage rate of the transfer layer due to temperature change after heat treatment will be the shrinkage of the print. It is preferable that the transfer layer be formed so as to have the same level as the transfer rate, or to a level that does not cause curling in the laminated print due to shrinkage of the transfer layer.

Note that the cover sheet must have excellent peeling performance so that blocking does not occur between the cover sheet and the transfer layer during storage of the print protection member of this type.

The material used for such a cover sheet is cloth, plastic film, etc., and if desired, the surface is coated with silicone resin, polyester resin, thermosetting resin, etc.
This is a product of a release treatment material with various release properties such as . Alternatively, Mylar film, polypropylene film, polycarbonate film, polyethylene film, polyimide film, fluororesin film, polyvinyl chloride film, etc. can be used.

The thickness of the cover sheet 3 is 15 to 100 μm, preferably 20 to 50 μm. If the cover sheet is too thin, it will easily wrinkle during thermocompression bonding, which may cause negative effects on the sample that is in close contact with it.If it is too thick, it may interfere with the lamination process, which allows heat to be transmitted well depending on the temperature of the laminator's heater. It is for the purpose of

Print protection treatment using the print protection member with cover sheet of the present invention involves sandwiching the print between the transfer layer and the cover sheet so that the image forming surface of the print is in contact with the transfer layer, and placing the cover sheet together with the laminator. This is done by applying heat and pressure.

〔Effect of the invention〕

As explained above, if the print protection member with a cover sheet of the present invention is used, images recorded by recording liquid are given gloss, secondary light, water resistance, and abrasion resistance, resulting in high clarity. In addition to being able to obtain images with excellent storage stability, it also prevents troubles such as laminating with the transfer layer exposed and contaminating the equipment. ■ By sandwiching the print between the transfer layer and cover sheet, the position of the transfer layer and print can be adjusted. Misalignment can be prevented, ■ Contamination of the transfer layer due to dust etc. can be prevented, ■ Peeling Mf
Since the transfer layer is covered with a cover sheet with a good l: ratio, there is no need to worry about blocking when storing in stacks.

■There are effects such as smooth peeling of the print from the base material after transfer.

[Brief explanation of drawings]

Figure 1 shows one of the print protection members with a cover sheet of the present invention.
FIG. 2 is a cross-sectional view of an embodiment, and FIGS. 2 and 3 are cross-sectional views of other embodiments. 1: Transfer layer 2: Base material 3: Cover sheet

Claims (1)

[Claims] (1) A print protection member with a cover sheet, in which a transfer layer is provided on a base material so as to be releasable from the base material, and a cover sheet capable of covering the transfer layer is provided.