JP2810354B2 - How to attach design letters on plastic products - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for attaching decorative designs and characters to the outer surface of a plastic product.

[0002]

2. Description of the Related Art As a conventional method of attaching a design or a character to the surface of a general plastic material product, for example, a cassette tape case, a CD case, or the like, a sticker on which the design and the character are printed is attached or directly printed. By doing so, a method of explaining the contents so that the user can clearly understand the contents by looking at the product is implemented.

[0003]

As shown in FIG. 5, the conventional method of attaching a pre-printed seal 7 is such that when exposed to moisture for a long period of time, the stickiness of the adhesive deteriorates and the seal is peeled off. If exposed to sunlight or placed in high temperatures, the designs and text printed on the stickers will fade and blur. Or even if the seal does not come off,
The four corners were turned up, so that the cassette could not be easily removed when playing back with a tape recorder.

When a design or a character is attached directly to the surface of a case by a method as shown in FIG. 6 without dropping or fading due to moisture, several operations are required in colored printing. Without it, the ideal effect cannot be achieved. However, if the coloring is not successful even once in several processes, and the pigment is not distributed evenly, the overall appearance of the design or character is impaired. Therefore, the case becomes a loss because it becomes a defective product.

The present invention has been made in view of the above-mentioned drawbacks of the conventional method. SUMMARY OF THE INVENTION An object of the present invention is to provide a method for attaching design characters on a plastic product in which the above disadvantages are improved.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a base material of a plastic product on which a predetermined design or character is adhered, that is, a case of a cassette tape or the like on a surface of a worktable. A roll-shaped film on which a predetermined pattern and characters are continuously printed many times by placing the material roller on one side of the work table and the winding roller on the other side Is wound on a material roller, and the outer end thereof is fixed to a winding roller to be wound. After placing the film on the surface of the case and heating it to an appropriate temperature to soften the ink for the design and characters, press the film with the pressing roller from the top of the film, then press the film from one end to the other. At the same time, the ink on the surface of the film is moved and adhered to the case.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. First, as shown in FIG. 2, a concave portion 21 provided on the surface of the worktable 2 is a substrate 1, that is, a case of a cassette tape or a case of a CD, which is a plastic material product, to which designs and characters are attached. , The upper surface of the substrate 1 is set higher than the surface of the worktable 2, and the substrate 1 is positioned so as not to move into the recess 21.

Next, a raw material roller 3 is installed above one (for example, left side) of the worktable 2, and another winding roller 31 is placed above the other (for example, right side) at the same height as the raw material roller 3.
Is installed. The raw material roller 3 hangs thereon a film 4 as shown in FIG. 1 so as to rotate in a roll shape, and the winding roller 31 winds up the portion where the film 4 has been printed.

[0009] The roller-shaped film 4 is first coated with a single mold release agent (mold release) 41 on its surface, and then a predetermined design or character ink 42 is adhered onto the mold release agent 41. When the film 4 and the design or the character ink 42 are heated to an appropriate temperature by the action of the mold release agent 41 and then rolled onto the pressing roller 5,
The ink 42 easily separates from the mold release agent 41 and is fused and adhered to the surface of the base material 1 for heating.

The pressing roller 5 is installed near the raw material roller 3, and an electric heater 6 is installed above the center of the worktable 2. The area of the heater 6 is made slightly larger than the area of the substrate 1. Thus, when the heater 6 heats the work, the surface of the substrate 1 and the film 4 and the ink 42 of the design letters adhering to the lower surface of the film 4 are heated.
Is heated to an appropriate temperature, and the design and the character ink 42 are attached to the base material and separated from the film 4.

When actually working with the method of the present invention, as shown in FIGS. 3 and 4, the roll-shaped film 4 previously wound on the raw material roller 3 is wound around the winding roller 31 and 4 so that the pattern and the character ink 42 on the lower surface of the substrate 4 are aligned with the print-scheduled portion of the substrate 1, and then the heater 6 is activated and heated until the film 4 and the substrate 1 reach a predetermined temperature. While intermittent heating, measure with a thermometer. At that time, it is convenient to automatically turn off the power of the heater 6 preferably.

Further, the pressing roller 5 is placed on one side (for example, left side) of the substrate 1 on the upper surface of the film 4 and then pressed to bring the film 4 into contact with the substrate 1 and then the other side (for example, right side). Then, the pattern and the character ink 42 adhered to the lower surface of the film 4 are completely separated from the mold release agent 41 and move and adhere to the upper surface of the substrate 1.
Thereafter, the take-up roller 31 is rotated to wind up the portion of the film 4 on which printing has been completed once, and a new one-time film 4 is fitted onto the newly replaced substrate 1.

The method of the present invention can be applied to a case of a video tape in addition to a case of a cassette tape and a case of a CD.

[0014]

According to the method of the present invention, the plastic substrate, the film, the design and the character ink adhered to the upper surface of the film are first heated and softened to an appropriate temperature, The pattern and character ink are released from the mold release agent coated on the film and adhered to the upper surface of the substrate with pressure using a roller. Designs and characters do not easily fall off or fade, even when exposed to moisture and sunlight. In addition, the operation is one-time and very simple, so that the cost is also greatly reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a film according to an embodiment of the present invention.

FIG. 2 is a side view of the embodiment of the present invention during operation.

FIG. 3 is a side view of the embodiment of the present invention during operation.

FIG. 4 is a side view of the embodiment of the present invention during operation.

FIG. 5 is a perspective view showing a state in which a conventional sticker is attached to a case surface of a cassette tape.

FIG. 6 is a perspective view showing a state in which designs and characters are attached to the surface of a cassette tape case by a conventional direct printing method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base material 2 Work table 21 Depression table 3 Raw material roller 31 Winding roller 4 Film 41 Mold release agent 42 Ink 5 Compression roller 6 Heater

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Claims (2)

(57) [Claims] 1. A base material of a plastic material product is placed in a recess on a surface of a worktable to stabilize the base material so that the upper surface of the base material to which designs and characters are attached is higher than the surface of the worktable. Next, a raw material roller and a take-up roller are respectively installed at the same height on both left and right sides of the worktable, and the raw material roller can be rotated with a roll-shaped film to which at least one design or character ink is previously attached. , The winding roller takes up the portion of the design or character on which the roll-shaped film has adhered and moved to and adheres to the base material, and the design or character attached to the film first has a single layer. The mold release agent is coated on the lower surface of the film on an average basis, and then adhered onto the mold release agent. A compression roller is installed on one side of the raw material roller, and above the worktable. A heat heater is installed, and the area of the electric heater is larger than the area of the substrate. The substrate is attached to the substrate by the electric heater, a part of the film drawn thereon, and adhered to this part. Simultaneously heating the ink of the design and the character to a predetermined temperature, then rolling while pressing the film on the substrate with the compression roller, to move from one side of the worktable to the other side, A method for attaching design characters to a plastic product, wherein the ink of the design or characters softened by heating is transferred from the lower surface of the film to the surface of the substrate. 2. The method of claim 1, wherein the plastic material product is one of a cassette tape case, a CD case, and a video tape case. .