JPH0430610Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Industrial application field) This invention relates to hanging diagrams that are mainly used as teaching materials, research presentations, lectures, etc. Concerning hanging diagrams that make it easier.

(Prior Art) A wide variety of hanging diagrams with characters, diagrams, etc. printed thereon have been used as teaching materials for teachers to teach students in schools. Also, when giving research presentations or lectures, they often use hanging diagrams with the contents of the presentation or lecture written on them.

Such wall charts are usually made of paper, and many are coated with resin to make them more durable.

(Problem that the invention aims to solve) When giving a class, presentation, or lecture using a hanging diagram, it is necessary to use water-based or oil-based ink felt pens to explain the matters printed on the hanging diagram.
It is easier and more convenient to explain by writing marks, letters, etc.

Conventional paper wall drawings have had the disadvantage that when the above-mentioned writing is done, the wall drawings cannot be erased or become stained, making it impossible to reuse them.

The present invention solves the problems of conventional hanging diagrams,
The purpose is to provide a wall diagram that is easy to write on and erase using a felt pen or the like.

(Means for solving the problem) The present invention is based on a film surface of a laminate consisting of a film and a fabric on which characters, diagrams, etc. are printed. , an epoxy-modified urethane resin, an epoxy-modified amino resin, an acrylic polyol type urethane resin, and an epoxy-modified phenol resin.

The present invention will be explained below with reference to the drawings. FIG. 1 is a side sectional view of the wall drawing F of the present invention. 1 is a transparent film, 2 is a fabric with letters, diagrams, etc. printed on it,
3 is a specific resin. When actually using the
This is provided with a winding roll, a hanging part, etc. FIG. 2 is a side sectional view showing another embodiment of the hanging figure F of the present invention. A transparent film 1 is laminated on the front and back sides of a cloth 2 with characters, diagrams, etc. printed on the front and back sides, and the film 1 is coated with a specific resin so that both sides can be used as a hanging picture. FIG. 3 is a plan view of the hanging figure F of the present invention, where 4 is a winding roll and 5 is a hanging part.

The material for the film 1 may be polyester, polyamide, polyolefin, cellulose, etc., but polyester film is particularly preferred. The thickness of the film is not particularly limited since it depends on the physical properties of the material, but for example, in the case of a polyester film, it is preferably in the range of 12 to 250μ, particularly 15 to 50μ. If the thickness of the film is too thin, handling in the resin treatment process and fabric bonding process when forming a laminate will be reduced, and the durability of basic stress characteristics such as strength and elongation of the laminate will be reduced. . If the film is too thick, it becomes similar to a plate-like body and the flexibility of the laminate decreases, resulting in poor winding performance. The film 1 may be colored in any color with pigments, dyes, etc., but is required to be transparent enough to allow the characters, diagrams, etc. printed on the fabric 2 to be seen. Also, in film 1,
Conventionally known functional additives such as flame retardants, antistatic agents, antibacterial agents, antifouling agents, and hydrophilic agents may be mixed as necessary.

Materials for the fabric 2 include synthetic fibers such as polyester, polyamide, polyolefin, and polyvinyl, semi-synthetic fibers such as rayon and acetate, natural fibers such as cotton and wool, metal fibers, and inorganic fibers in some cases. Fibers or a combination of these may be used. Fabric here refers to woven and knitted fabrics,
These are fibrous structures such as nonwoven fabrics, nets, and scrims.

And the hanging picture F of this invention is film 1 and letters,
A specific resin 3 is coated on the film surface of a laminate made of a fabric 2 on which diagrams and the like are printed. In this case, as shown in FIG. 1, the film 1 may be laminated on the surface of the fabric 2 on which characters, diagrams, etc. are printed, and a specific resin layer 3 may be formed on the upper surface, but as shown in FIG. Like, fabric 2
Characters, diagrams, etc. may be printed on both sides of the sheet, and the film 1 is laminated thereon to form a double-sided layer, and further a specific resin layer 3 may be formed on both the front and back surfaces. In this case, characters, diagrams, etc. may be printed only on the front surface of the fabric 2, and no printing may be performed on the back surface, so that the back surface can be used in place of a whiteboard or blackboard. Furthermore, if necessary, a multilayer laminate of film and cloth may be prepared, characters, diagrams, etc. may be printed on the surface of the outermost layer of cloth, and a film layer and a resin layer may be formed thereon.

The method of laminating and integrating the film 1 and the fabric 2 may be any conventionally known means. There are methods such as mixing low-melting point fibers into fabric and then subjecting the laminate to heat and pressure treatment to integrate them, and bonding with adhesive.

The resin 3 coated on the surface of the film 1 is a thermosetting acrylic resin, an acrylic modified amino resin, an acrylic modified urethane resin, an epoxy modified amino resin,
It is one or more resins selected from the group consisting of acrylic polyol type urethane resins and epoxy-modified phenol resins. The method of coating the surface of the film 1 with the resin 3 may be any conventionally known method. The dipping method, spray method, brushing method, roll method, etc. can be used, but in order to make the thickness of the coating resin layer uniform, the doctor knife method, kiss roll method,
Rather than using the doctor roll method, it is better to use the gravure method or the comma doctor method.

The thickness of the coating resin layer 3 is preferably in the range of 5 to 20 microns. If the thickness is too thin, it will be difficult to coat it uniformly, and if it is too thick, the flexibility of the hanging pattern will be impaired.

It is desirable that the hanging picture of the present invention, which is composed of the film 1, the fabric 2, and the specific resin 3, has a bending resistance in the range of 60 to 300 mg. The bending resistance of the film,
It is determined by the characteristics of the fabric and resin, as well as the heat treatment conditions, hot pressure processing conditions, drying conditions, etc. in the lamination process, coating process, etc. If the bending resistance is too large, the rollability will decrease, and conversely, the If you use too much, it will quickly become limp and difficult to use.

The bending resistance is measured as follows.

(a) Create a sample with a width of 1/2 inch and a length of 100 mm.

(b) The equipment uses a tensile tester with a self-recording device and a device for measuring bending reverberation.

(c) Attach a bending repulsion measurement device to the tensile tester and set the following conditions. Attach the sample to the chuck in an inverted U shape (installation width 10 mm). Head speed 50mm/mm, chart speed 500mm/mm,
Sample length (l) from the chuck surface to the pressurizing surface: l ₁ 20 mm before pressurization, l ₂ 5 mm after pressurizing (d) The center line of the inverted U-shaped test piece sandwiched between the grips of the tensile tester and the inverted conical shape. Place the grip on the test stand so that the center line of the pressure body is aligned.

(e) Operate the UP button on the tensile tester and measure l ₁ (20mm)
The test piece is further raised from the position of , and the distance between the sharp end of the inverted conical pressure body and the chuck surface is l ₂ (5
mm).

(f) Read the bending repulsion force (mg) when l ₂ is 5 mm and use it as the bending resistance.

(Effect of idea) The present invention has the following effects.

(a) It is possible to give an explanation while writing lines, marks, characters, etc. on the hanging diagram of the present invention, and then erase the writing and reuse it repeatedly. For example, fill in the mark with red oil-based ink and
Even after being left unattended for several days, it can be cleaned and reused.

(b) It can be rolled up into a small size, making it convenient to carry and store.

(c) As shown in Figure 2, in a hanging pattern where a film layer and a resin layer are formed on both sides of the fabric, and characters, diagrams, etc. are printed on only one side of the fabric, and the other side is not printed, The non-printed surface can be used in place of a whiteboard or blackboard, making it suitable for use in outdoor classes where there is no blackboard. The unprinted surface can also be used as a projection screen.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an example of the hanging diagram of the present invention;
FIG. 2 is a side sectional view showing another embodiment of the present invention;
FIG. 3 is a plan view showing an example of a wall diagram of the present invention. 1...Film, 2...Fabric with letters, diagrams, etc. printed on it, 3...Specific resin layer, F...Walling diagram.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. On the film surface of a laminate consisting of a fabric and film on which characters, diagrams, etc. are printed, thermosetting acrylic resin, acrylic-modified amino resin, acrylic-modified urethane resin, epoxy-modified urethane resin, A hanging diagram characterized in that a layer of one or more resins selected from the group consisting of epoxy-modified amino resin, acrylic polyol-type urethane resin, and epoxy-modified phenol resin is formed. 2. The wall drawing according to claim 1 of the utility model registration claim, which has a bending resistance of 60 to 300 mg.