JPH0159908B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a method of printing on surface fasteners,
More specifically, the present invention relates to a method of printing on the surface of the base fabric on the side of the engagement protrusions of a hook-and-loop fastener in which engagement protrusions are embedded in the base fabric at predetermined intervals.

The engaging protrusion of the hook-and-loop fastener is formed in the shape of a loop or a hook, and is planted so as to protrude from one base fabric surface of the hook-and-loop fastener. Printing on this base cloth surface has been considered impossible because the engaging protrusions protrude and get in the way.

In other words, printing is performed by pressing the printing plate against the printing material and adhering the printing ink to the printing material, so when the printing plate is pressed against the base fabric surface of the hook-and-loop fastener, the engagement protrusion is pushed down, causing the hook-and-loop fastener to engage. There was a problem that the resultant force decreased. Furthermore, even if the printing plate does not push down the engagement protrusion, if the printing ink adheres to the engagement protrusion, the engagement protrusion may move due to its flexibility, and if you change your line of sight, the relative position to the base fabric surface may change. Because of the movement, there was also the problem that the printed pattern became unclear.

However, since the base fabric surface of a hook-and-loop fastener is always the part that attracts attention when separating and adhering when using a hook-and-loop fastener, printing on this base fabric surface has been desired as a medium with high information transmission efficiency.

Therefore, the present inventor investigated the possibility of printing on the base fabric surface on the side of the engaging protrusion of the hook-and-loop fastener, and made it possible to print on the base fabric surface on the side of the engaging protrusion of the hook-and-loop fastener. We focused on the combination with a printing base material to which printing ink does not adhere.

In other words, by using a relief printing plate, the contact area between the printing plate and the engagement protrusion is reduced, thereby reducing the possibility of pushing down the engagement protrusion, and without using liquid printing ink, it is possible to print on specific printing substrates. This was used to reduce the amount of printing ink adhering to the engagement protrusion.

We found that the printing substrate used in combination with the letterpress printing plate is preferably a film-like material such as carbon paper or carbon tape, which is not liquid at room temperature. We have come up with the idea of using, for example, a metal letterpress stamping plate, which has convex portions that form a printing pattern consisting of lines or dots with a width narrower than the spacing between the mating protrusions.

Next, a method of printing on a surface fastener according to the present invention will be explained with reference to the drawings.

As shown in FIG. 1, the hook-and-loop fastener 10 has an engaging protrusion 11 such as a loop or hook made of filament.
and a base cloth 12, and the engaging protrusion 11 is implanted on one base cloth surface 12a of the base cloth 12. Note that the engagement protrusions 11 are arranged at regular intervals P along the weave of the base fabric 12 due to manufacturing technology constraints.

As shown in FIG. 2, the printing base material 20 is a base film 21 coated with a coloring agent 22 so that the printing ink does not adhere to it just by contacting it.
These include those in which a colored layer and a heat-sensitive adhesive layer are laminated in this order, and those in which a release agent layer, a colored layer, a vacuum-deposited aluminum layer, and a heat-sensitive adhesive layer are laminated on one side of a polyester film.

As shown in FIG. 3, the convex press plate 30 is made of metal such as brass or copper, and is set in a mold mounting portion of a hot press machine 31. Convex portion 30a of this convex press plate 30
This forms a printed pattern and is engraved by engraving or etching. Also, this convex portion 30a
is composed of lines or dots having a width narrower than the planting interval P of the engaging protrusions 11 of the surface fastener 10.

Note that the convex press plate 30 is heated by an electric heater (not shown) provided at the mold attachment part of the heating press machine 31.

First, as shown in FIG. 3, the convex press plate 30 is set in the mold attachment part of the hot press machine 31, and the convex press plate 30 is preheated.

Next, as shown in FIG. 4, the surface fastener 10 is placed on the press table 32 of a hot press machine with the engaging protrusion 11 facing upward.

Next, as shown in FIG. 5, the printing base material 20 is placed on top of the surface fastener 10 with the colorant 22 side facing down.

Lastly, as shown in FIG.
The printing base 20 in the 0a portion is heated and pressed onto the base fabric surface 12a to perform transfer printing.

At this time, since the convex portion 30a of the convex pressing plate 30 is composed of lines and dots having a width narrower than the planting interval P of the engaging protrusions 11 of the surface fastener 10, the convex portion 30a of the convex pressing plate 30 is
Even if a contacts the engagement protrusion 11, the flexibility of the engagement protrusion 11 allows the engagement protrusion 11 to escape as shown by the dotted line in FIG. Even if the engaging protrusions 11 are pressed all the way to the end and are transferred and printed, only that one row of engaging protrusions 11 will remain, and this will not substantially reduce the engaging force of the surface fastener. At this time, if the width of the engagement protrusions 11 is wider than the planting interval P, at least two or more rows of engagement protrusions will be pushed down during printing (during heating and pressurization).
Not only is there a risk of reducing the engagement force of the hook-and-loop fastener, but also the printed lines become unclear and illegible due to the unevenness of the engagement protrusions.
Generally speaking, in printing, it is decided that thicker lines are easier to read, but when printing on the base fabric of hook-and-loop fasteners, contrary to this common sense, it is easier to read lines if they are thinner than the spacing between the engagement protrusions. It is. Also,
In the present invention, since the printing base material 20 is transferred to the printing material by heating and pressurizing without using liquid ink, when the convex part 30a of the convex press 30 presses downward, the print is pressed down by the convex part 30a. Base material 2
0 simply comes into contact with the engagement protrusion 11, the coloring agent 22 of the printing base material 20 will not adhere to the engagement protrusion 11.

As described above, the method of printing on a surface fastener according to the present invention involves placing the engaging protrusions 11 on the base fabric 1 at a predetermined interval P.
The printing base material 20, which is coated with a coloring agent 22 on the base film 21 and the printing ink does not adhere to it only by contact, is placed on the engaging protrusion 11 side of the surface fastener 10 implanted in the surface fastener 2, and the surface fastener 10 is A method characterized by transferring the coloring agent 22 to the hook-and-loop fastener base fabric 12 by heating and pressurizing it with a convex press plate 30 having a printing pattern composed of lines or dots with a width narrower than the planting interval P of the mating protrusions 11. It is.

Therefore, printing on the base fabric surface on the engaging protrusion side of the hook-and-loop fastener, which had been considered impossible until now, can be easily done, and if printing is done, it will be printed in an unexpected location by the hook-and-loop fastener user. This base fabric surface, which often attracts attention due to separation and close contact, is useful as a medium with high information transmission efficiency.

[Brief explanation of drawings]

The drawings show a method of printing on a surface fastener according to the present invention, and FIG. 1 is a schematic enlarged sectional view of a part of the surface fastener, FIG. 2 is a schematic enlarged sectional view of a part of a printing base material, and FIG. The figure is a schematic side view showing the process of setting the convex stamping plate on the hot press machine, Figure 4 is a schematic enlarged cross-sectional view showing the process of placing the hook-and-loop fastener on the press stand, and Figure 5 is a schematic side view showing the process of placing the hook-and-loop fastener on the press stand. FIG. 6 is a schematic enlarged sectional view showing the step of heating and pressing the surface fastener with a convex press plate, and FIG. FIG. 3 is a schematic enlarged cross-sectional view showing a state in which the plate is in contact with the engagement protrusion. 10... Hook and loop fastener, 11... Engaging protrusion, 1
2... Base fabric, 12a... One base fabric surface, 20...
Printing base material, 21... Base film, 22... Colored layer, 30... Convex press plate, 30a... Convex portion, 31
...heat press machine, 32...press stand, P...planting interval.

Claims (1)

[Claims] 1. On the engaging protrusion side of the hook-and-loop fastener, in which engaging protrusions are embedded in the base fabric at predetermined intervals, a printing base material coated with a coloring agent and to which printing ink does not adhere by mere contact is placed on the base film, Heated and pressurized with a convex printing plate whose printing pattern was composed of lines or dots with a width narrower than the planting interval of the engaging protrusions of the hook-and-loop fastener,
A method for printing on hook-and-loop fasteners, which comprises transferring a coloring agent to hook-and-loop fastener base fabric.