JPH05286114A - Screen printing plate, its manufacture and printing method using same - Google Patents

Abstract

PURPOSE:To sufficiently correspond to a printed surface, even if the printed surface is a curves surface. CONSTITUTION:In a screen printing plate 1 comprising a screen material (woven fabric 4) stuck on a base material 2, in which screen material patterns such as letters and figures are formed, the corresponding part 21 of a printing surface, which part corresponds also to the stereoscopic shape of a printed surface (aluminium wheel A), is formed in the base material 2; a cut-out window 23 of three-dimensional shape extending almost parallel to the printed surface is formed in the object position of printing in the corresponding part 21 of the printing surface, and the woven fabric 4, in which patterns composed of predetermined letters, figures, etc., for screen printing are formed, is stuck on the cut-out window 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen printing plate which can be printed on a curved surface, a method for producing the plate and a method for using the plate.

[0002]

2. Description of the Related Art Screen printing involves forming a pattern of characters, figures, etc. on the surface of a screen material made of a woven cloth woven with delicate fibers such as silk thread to cover the mesh of fibers. A screen material with a different pattern is pressed against the print target, and a color material such as ink, dye or paint is supplied from above, and this color material is transmitted through the uncovered mesh to the printed material for printing. It is a printing method.

In general, ink is used as a coloring material when the printing object is paper or wood, and dye is used as the coloring material when the printing object is a woven product (commonly called Naze printing). If the object to be printed is metal or concrete, a paint is used as a coloring material.

Further, as a method for covering the mesh of fibers,
The simplest is to make a pattern and attach it to the screen material. Such a method is still used when making many same signs.
However, the current mainstream of screen printing is shifting to the method of applying a photosensitive emulsion to a screen material. In other words, this photosensitive emulsion system applies a photosensitive emulsion to a screen material, projects a predetermined figure on the screen material, and develops the projected screen material to remove the photosensitive portion of the emulsion, thereby producing a screen material for printing. To do. In recent years, a technique of irradiating a laser beam to form a screen material for printing has been developed (Japanese Patent Laid-Open No. 62-62-62).
90241).

In any case, regardless of the size of the material to be printed or the arrangement of the material to be printed, it is possible to print easily and the printed portion is hard to be erased. Therefore, it is still widely used. Especially, in the manufacturing sites of automobiles and home appliances, the products produced are used for printing the product name and serial number.

Such screen printing is disclosed in, for example, Japanese Patent Laid-Open Nos. 3-67653 and 3-167557 in addition to the above-mentioned publications.

[0007]

By the way, in the conventional screen printing, the printing surface of the printing object is usually a flat surface, and is rarely a curved surface. This is because the screen material for normal printing is stretched and used on a frame such as a wooden frame, but it is extremely difficult to form a curved surface on the screen material stretched on the frame. This is because there is no screen material for curved surfaces.

However, when the printing surface to be screen-printed, such as an aluminum wheel, a parabolic antenna, the inner surface of a mortar-shaped container, the surface of a pipe, and an electric pole, is a curved surface, this requirement is actually very large. Was substantially difficult to meet. That is, in principle, screen printing is a printing method for a print surface whose surface is a flat surface, and does not target a curved surface.

Even if the surface to be printed is a curved surface, if the surface of the cylinder is a circular surface, the rotation of the material to be printed and the movement of the screen are synchronized while the flat screen is in line contact with the surface of the circumference. Although it is possible to print by doing so, the operation is very troublesome and is not actually used much. Moreover, when the surface to be printed is a concave curved surface, screen printing has hitherto been impossible.

Further, when screen printing is not used in curved surface printing, transfer is performed on a curved surface to be printed using transfer paper, but the transfer operation itself is complicated and
In order to prevent peeling, an operation of overcoating with a clear coat and fixing after transfer is required, which is a labor-intensive and time-consuming method.

The present invention has been made in order to solve the above-mentioned conventional problems, and is a screen printing plate which can sufficiently cope with a printing surface having a curved surface. It is an object of the present invention to provide a plate manufacturing method and a printing method using the plate.

[0012]

A screen printing plate according to a first aspect of the present invention is a screen printing plate in which a screen material having a pattern such as characters and figures is stretched on a support. In the printing plate, a printing surface corresponding portion corresponding to the three-dimensional shape of the printing surface is formed on the support,
A cutout window having a three-dimensional shape along the print surface is formed at a print target position in the print surface corresponding portion, and a pattern including predetermined characters and figures for screen printing is formed in the cutout window. The screen material is stretched.

A screen printing plate according to a second aspect of the present invention is the screen printing plate according to the first aspect, wherein the surface to be printed is formed by a concave curved surface having a mortar shape and corresponds to the surface to be printed. The printed surface corresponding portion has a center portion corresponding to the bottom portion of the concave curved surface, an outer peripheral portion along the peripheral portion of the concave curved surface, and a bridge portion connecting both portions between the central portion and the outer peripheral portion. And a cutout window defined by the bridge portion is formed between the central portion and the outer peripheral portion.

The method for producing a screen printing plate according to a third aspect of the present invention is a screen printing plate which is constructed by stretching a screen material on which a pattern such as characters and figures is formed on a support. First, a support having a printing surface corresponding portion corresponding to the three-dimensional shape of the surface to be printed is manufactured using a synthetic resin or a metal plate, and the printing target in the printing surface corresponding portion of the support is manufactured. A feature is that a cutout window is formed at a position, a pattern composed of characters, figures, etc. for screen printing is separately formed on the screen material, and the screen material with this pattern is stretched over the cutout window. It is what

According to a fourth aspect of the present invention, in a printing method using a screen printing plate, the printing surface corresponding portion of the screen printing plate according to the first aspect is formed on a printing surface having a three-dimensional shape. Pressing, squeezing operation by supplying ink, dye or paint to the printing surface corresponding part, the mesh portion of the screen material on which the pattern consisting of the characters, figures, etc. is formed on the ink, dye or paint. The printing is performed on the printing surface having the above-mentioned three-dimensional shape by passing it.

[0016]

According to the screen printing plate of claim 1, the three-dimensional cutout window formed in the printing surface corresponding portion is stretched with the screen material having the pattern for screen printing. Therefore, the printing surface corresponding portion of the support can be brought into close contact with the printing surface having a three-dimensional shape.

After the above-mentioned adhesion, a color material such as ink, dye or paint is supplied to the printing surface corresponding portion and squeegeeed, so that the color material passes through the mesh of the uncoated portion of the screen material. Then, it is possible to perform screen printing of a curved surface object which adheres to the printing surface and in which the pattern appears on the printing surface having a three-dimensional shape.

According to the screen printing plate of claim 2, since the plate has a cutout window defined by the bridge portion between the central portion and the outer peripheral portion, The screen material can be adapted to a printed surface having a concave curved surface. By fitting the printing surface corresponding portion of the plate plate into the concave curved surface, the printing corresponding portion comes into close contact with the surface to be printed, so that it is possible to appropriately perform screen printing on the concave curved surface.

According to the method for manufacturing a screen printing plate according to the third aspect, a support having a printing surface corresponding portion corresponding to the three-dimensional shape of the printing surface is manufactured using a synthetic resin or a metal plate. After that, a cutout window is formed at the print target position in this print surface corresponding portion, a pattern for screen printing is separately formed on the screen material, and the screen material with this pattern is stretched over the cutout window. Since the plate is manufactured by installing the plate, even if the printing surface corresponding portion has a three-dimensional shape, it is possible to easily stretch the screen material and appropriately make the screen printing plate.

According to the printing method using the screen printing plate according to claim 4, the printing surface corresponding portion of the screen printing plate according to claim 1 is formed on a printing surface having a three-dimensional shape. Since the plate is used to press and supply a color material such as ink, dye or paint to the area corresponding to the printing surface to perform a squeezing operation, a pattern composed of the characters, figures, etc. on the color material. It is possible to perform screen printing on the surface to be printed having the above-mentioned three-dimensional shape by passing through the uncoated mesh portion of the screen material on which the film is formed.

[0021]

1 is a front perspective view showing an example of a screen printing plate according to the present invention, and FIG. 2 is a rear perspective view of the plate. In the present embodiment, as the plate plate, a screen plate for the curved surface of the aluminum wheel of the vehicle is used. As shown in these figures, a screen printing plate 1 includes a support 2 made of a synthetic resin plate, and an edge frame 3 made of wood or the like provided on the periphery of the support 2. ing.

The material of the support 2 is not particularly limited, but polyethylene, polyvinyl chloride, polypropylene, polystyrene, acrylonitrile butadiene styrene, etc. are preferably used.

A mortar-shaped printing surface corresponding portion 21 is provided at the center of the support 2 so as to project to the back side of the support 2. The shape of the printing surface corresponding portion 21 corresponds to the three-dimensional shape of the printing surface of the aluminum wheel A indicated by the chain double-dashed line set on the plate 1 during printing. A predetermined number of cutout windows 23 are provided in the inclined outer peripheral portion 2b of the print surface corresponding portion 21.

That is, the printing surface corresponding portion 21 corresponding to the printing surface of the aluminum wheel A has a central portion 2a where the cutout window 23 forming the bottom portion along the concave curved surface is not formed.
And an outer peripheral portion 2b having an annular side cutout window 23 formed along the concave curved surface, and a bridge portion 22 bridged to the central portion that defines the cutout window 23 of the outer peripheral portion 2b. There is.

A woven cloth 4 as a screen material is stretched on the cutout window 23. Silk fibers were used as the woven fabric 4 in old times, but nowadays, synthetic fibers such as nylon or tetron are preferably used. Nylon is suitable for being stretched so as to form a curved surface because nylon is easily stretched, while Tetoron is less stretchable, it can well maintain the tensioned state. Nylon, which is suitable for forming a curved surface, is suitable as the material for the screen according to the present invention, but when the main purpose is to maintain the tension state, Tetron may be used. In addition, a blended product of nylon and tetron having both advantages may be used.

On the woven cloth 4, characters to be screen-printed in advance (“AB” in FIGS. 1 and 2) are used.
"C", "LMN", and "XYZ" are set in a white state (that is, a state in which the mesh of the woven cloth 4 other than the letters is shielded).

The woven cloth 4 on which such characters are formed is
The outer peripheral portion 2 of the printing surface corresponding portion 21 is formed by using a predetermined adhesive.
It is adhered to the cutout window 23 of b from the back side, and the surface is also padded with an adhesive to ensure this adhesion. In this manner, the cutout window 23 has a curved surface forming woven fabric 24.
Is formed.

FIG. 3 is an explanatory view showing an example of a method for manufacturing the screen printing plate 1 over time. That is, (a) of the figure is a schematic cross-sectional view showing a state in which the support 2 is molded by the mold K, (b) of the figure is a perspective view of the molded support 2, and (b) of the figure. (C) is a perspective view showing a state in which a photosensitive emulsion is applied to the woven cloth 4, (d) in the figure is a perspective view showing a situation in which a print pattern is formed on the woven cloth 4, and (e) in the figure. FIG. 3 is a perspective view showing a state in which the woven cloth 4 having a fixed print pattern is attached to the plate 1.

First, as shown in (a) of the figure, a metal comprising an upper mold K1 having a convex portion protruding downward in the center and a lower mold K2 having a concave portion corresponding to the convex portion. A synthetic resin plate 2'which is a raw material for the support 2 is loaded between the molds K, and pressed in a heated state to manufacture the support 2 as shown in FIG. The printing surface corresponding portion 21 of the support 2 has a shape corresponding to the curved surface to be printed of the aluminum wheel A (not shown) in the figure. A predetermined number of cutout windows 23 are provided on the outer peripheral portion 2b of the print surface corresponding portion 21, but the cutout windows 23 may be formed by punching at the time of press molding in (a) of the figure. Alternatively, it may be cut out after the molding is completed.

In this embodiment, the support 2 is manufactured by the mold K, but the present invention is not limited to such a mold system, and the support 2 is formed by punching a metal plate. Alternatively, it is possible to employ a mold making method of making while making a mold of the printing surface using FRP and glass fiber. Alternatively, the printing surface corresponding portion 21 may be formed by forming a curved surface while partially heating the synthetic resin plate 2'with a burner or the like.

Apart from the production of the support 2 as described above, as shown in (c) to (d) of FIG.
An operation of forming a printing pattern including figures and the like is separately performed.

First, in (c), the pretreatment edge frame 3'is used, and the woven fabric 4 is attached to the pretreatment edge frame 3 '.
It is coated with a photosensitive emulsion. By applying the photosensitive emulsion, the mesh of the woven cloth 4 is in a state of being crushed.

After drying the emulsion, the woven fabric 4 is removed from the pretreatment edge frame 3'and pressed onto a glass plate G having many small holes for sucking air as shown in (d). It is placed in an unfolded state. Then, the air between the woven fabric 4 and the glass plate G is removed by the blower B, and the woven fabric 4
Is in close contact with the glass plate G. In this state, the pattern paper 41 having the pattern for printing cut out is applied to the woven cloth 4, and light is irradiated toward the woven cloth 4 on the glass plate G to which the pattern paper is applied.

Since the photosensitive emulsion which has been irradiated with light is insolubilized by a predetermined chemical reaction, after the light irradiation, the woven cloth 4 is dipped in a predetermined solvent to dissolve and remove the photosensitive emulsion in a portion not exposed to light. The washing pattern fixes the printed pattern on the woven fabric 4.

In the above operation, the application of the photosensitive emulsion (c) is carried out with the woven cloth 4 fixed on the pretreatment edge frame 3 ', and thereafter, the woven cloth 4 is fixed on the pretreatment edge frame 3'. 'Is removed from the. As described above, it is important to perform the dissolution processing of the photosensitive emulsion after removing it from the pretreatment edge frame 3 '. That is, when the woven fabric 4 forms a pattern in a stretched state, when the woven fabric 4 is removed and relaxed, the pattern formed with strain is distorted, and when stretched on the support 2, the strain increases, and as expected, No normal pattern can be formed.

When a pattern is formed without being stretched just by arranging it on the glass plate G as in this embodiment, the woven fabric 4 is in a relaxed state from the beginning and is not distorted.

The above-mentioned photosensitive emulsion is usually an aromatic diazonium salt compound, an O-quinonediazide compound, an acrylic resin compound having a cinnamic acid group, or various acrylate monomers and methacrylate monomers, and a photopolymerization initiator. The added substance is used in a state of being suspended in a colloidal state with a predetermined solvent. Water is usually used as a solvent for fixing and washing.

The woven fabric 4 having this pattern fixed thereon, as shown in (e) of the figure, is provided in the cutout window 23 on the back side of the support 2 provided with the edge frame 3, and the pattern portion has the cutout window 23. It is attached (sheathed) while being adjusted so that it is placed at an appropriate position. This braiding is performed by using an appropriate adhesive, but after the woven cloth 4 is attached to the cutout window 23, in order to further secure this attachment, the outer peripheral portion of the woven cloth 4 is The adhesive is built up to form the curved surface forming woven fabric 24.

Thus, the screen printing plate according to the present invention as shown in FIGS. 1 and 2 is manufactured.

In order to perform screen printing using such a printing plate 1, as shown in FIGS. 1 and 2, the printing plate 1 for screen printing is stretched with a woven fabric 4 having a predetermined pattern formed thereon. The printing surface corresponding portion 21 is pressed against the aluminum wheel A having an annular curved surface so as to be fitted, the paint is supplied to the woven cloth 4 portion of the printing surface corresponding portion 21, and the above coating material is applied with a spatula or a brush. The squeegee operation is performed as described above, and the paint is caused to pass through the mesh portion of the woven cloth 4 to adhere the paint to the curved surface of the aluminum wheel A. afterwards,
By separating the plate 1 from the aluminum wheel A, the screen printing on the aluminum wheel A is completed.

As described in detail in the above examples, the screen plate for screen printing of the present invention is formed by heat-molding the support 2 made of a synthetic resin so as to match the curved surface shape of the printing surface of the printing object, Since the cutout window 23 for only the necessary portion is punched and the woven cloth 4 provided with the pattern to be printed is stretched on the cutout window 23, the curved surface, which has been difficult in the past, can be sufficiently dealt with. Can be convenient.

Further, in the production of the plate 1, the pretreatment edge frame 3'is used in the steps until the photosensitive emulsion is applied to the woven cloth 4.
The woven cloth 4 is attached to the woven cloth 4. However, the subsequent exposure and cleaning processing is performed with the woven cloth 4 removed from the pretreatment edge frame 3 '. As a result, the curved surface of the printing surface corresponding portion 21 is appropriately stretched.

As described above, in the present embodiment, the aluminum wheel A was selected as the object to be printed and the paint was used as the coloring material, but the present invention is limited to such a product to be printed having a metallic property. The material to be printed may be made of earthenware, wood, concrete, synthetic resin, paper, cloth or the like.

Specific articles of interest include steel furniture, various household appliances, various containers, parabolic antennas, the surface of utility poles, the surfaces of pipes and the like. It can also be applied to cloth products such as stuffed animals and corrugated cardboard products having curved surfaces. However, when the material to be printed is a fabric product, a dye is suitable as the color material, and when the material to be printed is a paper product, an ink for ordinary printing is suitable as the color material.

[0045]

As described above, in the screen printing plate of the present invention, the support made of synthetic resin is provided with the printing surface corresponding portion corresponding to the three-dimensional shape of the surface to be printed. At the print target position in the section, a cutout window having a three-dimensional shape along the surface to be printed is formed, and since the cutout window is stretched with the screen material on which the pattern for screen printing is formed, The printing surface corresponding portion of the support can be brought into close contact with the printing surface having a three-dimensional shape.
After the completion of the adhesion, by supplying a color material such as ink, dye or paint to the printing surface corresponding portion and performing squeegee, the color material passes through the mesh of the uncoated portion of the screen material. It is possible to perform screen printing on a curved surface object, which has been attached to the surface to be printed and is extremely difficult in the past.

Further, the printing surface formed of the mortar-shaped concave curved surface is targeted, and the printing surface corresponding portion corresponding to this printing surface has a central portion corresponding to the bottom of the concave curved surface and the concave curved surface. A cutout window having an outer peripheral portion along a peripheral portion and a bridge portion connecting both portions between the central portion and the outer peripheral portion, and being partitioned by the bridge portion between the central portion and the outer peripheral portion. If the printing plate is formed, it is possible to manufacture a printing plate that can correspond well to the surface to be printed on which a concave curved surface is formed. Therefore, by inserting the printing surface corresponding part of this printing plate into the concave curved surface, The print corresponding portion can be in close contact with the surface to be printed, and screen printing can be appropriately performed even on a concave curved surface.

In the method for producing a screen printing plate according to the present invention, a synthetic resin or a metal plate is used to produce a support having a printing surface corresponding portion corresponding to the three-dimensional shape of the printing surface,
After that, a cutout window is formed at the print target position in the print surface corresponding portion, a pattern for screen printing is separately formed on the screen material, and the screen material with this pattern is stretched over the cutout window. Since the plate plate is manufactured by using the above-mentioned method, it is convenient that the plate plate can be easily manufactured when the printing surface corresponding portion has a three-dimensional shape, which is conventionally difficult.

Further, in the printing method using the screen printing plate of the present invention, the printing surface corresponding portion is pressed against the printing surface having a three-dimensional shape by using the screen printing plate for curved surface. Since the plate is used by performing a squeezing operation by supplying a coloring material such as ink, dye or paint to the printing surface corresponding portion, a three-dimensional shape which has been conventionally difficult to screen-print. It is possible to perform screen printing extremely easily on the surface to be printed, which is extremely effective in reducing manpower and time.

[Brief description of drawings]

FIG. 1 is a front perspective view showing an example of a screen printing plate according to the present invention.

2 is a rear perspective view of FIG. 1. FIG.

FIG. 3 is an explanatory view showing an example of a method for manufacturing a screen printing plate according to the present invention, in which (a) is a schematic sectional view showing a state where a support is molded by a mold, and (b) is a molded support. A perspective view of the body, (C) is a perspective view showing a state in which a photosensitive emulsion is applied to a woven cloth, (D) is a perspective view showing a situation in which a print pattern is formed, and (E) is a woven cloth on which the print pattern is fixed. It is a perspective view which shows the state stuck on a printing plate.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plate 2 Support 2'Synthetic resin plate 2a Center part 2b Outer peripheral part 21 Printing surface corresponding part 22 Bridge part 23 Cutout window 24 Curved surface forming woven fabric 25 Bridge part 3 Edge frame 3'Pretreatment edge frame 4 Woven fabric K Mold K1 Upper mold K2 Lower mold A Aluminum wheel

Claims (4)

[Claims] 1. A screen printing plate comprising a support on which a screen material having a pattern of characters, figures and the like is stretched, the support corresponding to the three-dimensional shape of the surface to be printed. A printing surface corresponding portion is formed, a cutout window having a three-dimensional shape along the surface to be printed is formed at a print target position in the print surface corresponding portion, and a predetermined character for screen printing is formed in the cutout window, A screen printing plate comprising a screen material having a pattern formed of figures and the like stretched thereon. 2. The surface to be printed is formed with a concave curved surface in the shape of a mortar, and the printing surface corresponding portion corresponding to the surface to be printed has a central portion corresponding to the bottom of the concave curved surface and a peripheral portion of the concave curved surface. And a bridge portion connecting both parts between the central part and the outer peripheral part, and a cutout window defined by the bridge part is formed between the central part and the outer peripheral part. The screen printing plate according to claim 1, wherein the plate is for screen printing. 3. A method of manufacturing a screen printing plate comprising a screen material having a pattern of characters, figures, etc. stretched on a support, wherein a synthetic resin or a metal plate is first used. Produce a support with a printing surface corresponding part corresponding to the three-dimensional shape of the printing surface, form a cutout window at the printing target position in the printing surface corresponding part of this support, and screen print separately on the screen material. A method for producing a screen printing plate, which comprises forming a pattern of characters, figures, etc. for carrying out and forming a screen material having the pattern on the cutout window. 4. The printing surface corresponding portion of the screen printing plate according to claim 1 or 2 is pressed against a printing surface having a three-dimensional shape, and ink, dye or paint is supplied to the printing surface corresponding portion. And perform squeegee operation,
A screen printing plate for printing, characterized in that the dye or paint is printed on the surface to be printed having the three-dimensional shape by passing through the mesh portion of the screen material on which the pattern consisting of the characters, figures and the like is formed. The printing method used.