JP2007021731A - Soft film body and soft film joining method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a soft film joined body capable of simply and certainly applying coloration to the edge part of a case or tag formed of a soft film without causing the shift of a coloring position in a case that coloration is applied to the edge part of the case or tag, and a soft film joining method. <P>SOLUTION: In a case that the soft film joined body 1 is formed by welding a plurality of thermally weldable soft films 2 from both sides of them, a film-like coloring member 4 having a coloring body 5 is superposed on the superposed soft films 2 and a mold 6 is pressed to the coloring member 4 and the soft films 2. Then, the soft films 2 are welded by the decorative press part 7 of the mold 6 to form the edge part 3 and the coloring body 5 of the coloring member 4 is thermally transferred to the edge part 3. Thereafter, the unnecessary part of the soft film 2 is removed along the part cut by the outer blade 8 of the mold 6 to form the bag-like joined body 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a case or tag using a weldable soft film and a joined body of similar soft films, and more particularly, to a soft film that improves the appearance of a welded edge. The present invention relates to a joined body and a coloring / joining method thereof.

  Currently, cases made of soft film are used as pen cases and accessories for storing and carrying contents, or as protective bags that protect products from dust and debris when selling and displaying them. It is often used as a case for sales promotion that improves the value of the original product by printing it on.

In the case of forming such a soft film case or the like, for example, it is formed by the method described in Patent Document 1 below. That is, first, as shown in FIG. 5, when forming a case of a soft film, first, two soft films 20 or one soft film 20 is folded, and a mold 6 is applied from above to heat. Add And the soft film of the front and back is welded with the heat | fever, Then, the case of the soft film with which the edge part was welded is formed by removing the soft film part of the outer side of the welding margin.
JP 2000-33956 A

  By the way, the demand for such a soft film case as a cheaper and better sales promotion case is demanded, and in order to make it look better as a more characteristic case or the like, the edge portion of the case (hereinafter referred to as the case) It is considered to color the edge).

  Examples of a method for coloring the edge portion 30 include a method in which a portion corresponding to the edge portion 30 of the front or back soft film is colored in advance along the shape of the edge portion 30. It is done. However, in many cases, printing and welding are performed in separate steps, and even if the soft film 20 colored only at the edge 30 is used, the soft film 20 is very soft and stretches. Due to the nature, the coloring position and the position of the mold 6 may not match. For this reason, not only does the alignment of the mold 6 take time, but the alignment position of the mold 6 shifts, resulting in a poor yield, resulting in an increase in cost.

  Therefore, the present invention has been made paying attention to the above-mentioned problem, and when coloring the edge of a soft film case or tag formed of a soft film, it is simple and easy without causing a shift in the coloring position. An object of the present invention is to provide a joined body of a flexible film that can be surely colored and a joining method thereof.

  That is, in order to solve the above-described problems, the present invention, when forming a joined body, superimposes a coloring member having a colored body from the front surface or the back surface side on a preliminarily overlapped soft film, and from above the gold member Press the mold. And while applying a heat | fever to a metal mold | die, a soft film is welded, At the same time, a coloring body is thermally transferred from the coloring member to an edge.

  According to such an invention, it is not necessary to color the edge portion of the soft film in advance, and it is not necessary to align the mold with the colored edge portion. The part can be colored. In addition, since the edge portion and the colored portion do not shift, only the edge portion can be reliably colored, and the product cost can be reduced by improving the yield.

  When coloring such an edge, a member having a melting point higher than that of the soft film is used as the coloring member, and ink, pigment, or a deposited metal film is applied to the coloring member. .

  In this way, the coloring member is not welded together, and only the colored body of the coloring member can be transferred.

  In the present invention, when forming a bag-like joined body by welding the edge of a soft film with a mold, a coloring member having a colored body is also superimposed on the overlapped soft film and the mold is pressed. Since the edge is colored simultaneously with the welding of the edge, there is no need to color the edge of the soft film in advance, and the mold is positioned on the colored edge. There is no need to match. For this reason, it is possible to easily color the edge, and since there is no deviation between the edge and the colored portion, it is possible to reliably color only the edge, and the product is improved as the yield is improved. Cost can be reduced.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows the formation state of the joined body 1 of the soft film 2 in the present embodiment, and FIG. 2 shows the welding and coloring process of the edge 3 in the joined body 1. 3 shows the overall appearance of the joined body 1 of the soft film 2, and FIG. 4 shows the AA cross section in FIG.

  The joined body 1 of the flexible film 2 in the present embodiment is a bag such as a business card holder, a card holder, an accessory storage case, or a tag with the entire edge 3 sealed, and at least on the front and back sides. Each has a flexible film 2 and is welded to form a bag having an edge 3, and the colored body 5 can be thermally transferred simultaneously with the welding of the edge 3. Hereinafter, the joined body 1 of the flexible film 2 and the joining method thereof in the present embodiment will be described in detail.

  The soft film 2 forming the joined body 1 is made of a material that is relatively flexible and that can be welded by the mold 6. Various materials can be used as such a material, and for example, vinyl chloride, polypropylene, polyethylene, ethylene vinyl alcohol, and a composite thereof can be used. These materials can be welded at a relatively low temperature. For example, polypropylene can be welded at 150 ° C. to 200 ° C., and polyethylene can be welded at 90 ° C. to 120 ° C. Can do.

  Such a joined body 1 is configured by superimposing the front side film 2a and the back side film 2b so that a bag-like storage portion is provided therein. As a method for superimposing the soft films 2 in this manner, a method of superimposing two independent soft films 2 or a method of folding and stacking one soft film 2 can be employed. Moreover, when providing a partition in a storage part suitably, it is good to provide another soft film 2 or several sheets in the inside. These soft films 2 may all be films of the same color, but for example, films of different colors may be used, for example, the front film is a transparent film and the back film is a colored film.

  In the step of joining the soft films 2 on the front and back thus overlapped, the coloring member 4 having the colored body 5 is further overlapped. The coloring member 4 is composed of a thin film having ink, pigment, metal foil or the like on one surface, and is composed of a film having a melting point higher than that of the soft film 2. If the melting point of the coloring member 4 is made relatively high in this way, the colored film 5 can be thermally transferred to weld the flexible film 2 before the coloring member 4 is melted.

  Such welding and thermal transfer are performed by a metal mold 6. The mold 6 is constituted by a member having a shape corresponding to the outer shape of the joined body 1, and has a decorative pressing portion 7 at an inner welded portion as shown in FIG. Has an outer blade 8. The decorative pressing portion 7 has a flat tip portion, and welds the front film 2 a and the back film 2 b by pressing the flat portion 7 a against the soft film 2. The outer blade 8 has a pointed tip, and the pointed portion 8a is slightly protruded from the decorative pressing portion 7 so that the soft film 2 is cut when the mold 6 is pressed. Make it happen. The mold 6 is fixed by a jig 60 and heated to a temperature at which welding with the jig 60 is possible with a heater.

  Next, the process of welding and heat-transferring the soft film 2 and the coloring member 4 thus configured with the mold 6 will be described.

  First, when forming the joined body 1 of the soft film 2, the front film 2 a and the back film 2 b are overlapped and set on the base table 9. And the coloring member 4 which made the surface which apply | coated the colored body 5 below on the upper part of the front side film 2a is piled up. In this state, the mold 6 is heated and pressed from above the coloring member 4. At this time, the colored body 5 of the coloring member 4 is thermally transferred to the front film 2a by the flat decorative pressing portion 7 of the mold 6, and at the same time, the front film 2a and the back film are welded and colored. Edge 3 is formed. At the same time as this welding, a cut is formed in the outer portion of the edge 3 welded by the outer blade 8 so that it can be melted. After making the welding, thermal transfer, and fusing possible in this way, the welded soft film 2 is taken out from the base table 9, and unnecessary soft film 2 is removed along the cut line. At this time, the colored body 5 of the coloring member 4 is thermally transferred to the edge portion 3 and the coloring member 4 is not welded to the soft film 2, so that only the soft film 2 needs to be broken at the unnecessary portion. And the removal of this unnecessary part forms the bag-shaped joined body 1 which the edge part 3 was colored and looks good.

  As described above, according to the above embodiment, when forming the bag-like joined body 1, the front and back soft films 2 are welded, and at the same time, the ink, pigment, metal foil and the like of the coloring member 4 are thermally transferred. Therefore, as shown in FIG. 5, it is not necessary to color the position to be the edge 3 of the soft film 2 in advance, and it is not necessary to align the mold 6 with the colored edge 3. For this reason, the edge part 3 can be easily colored, and since there is no deviation between the edge part 3 and the colored part, the yield can be improved and the product cost can be reduced.

  In addition, since a film having a melting point higher than that of the soft film 2 is used as the coloring member 4, the coloring member 4 is not welded together, and the removal work of the coloring member 4 is simplified. can do. Moreover, generally, when the edge 3 is welded, the soft film 2 is deformed. At this time, if the coloring member 4 is a flexible film, the coloring member is along the deformation. 4 can be brought into close contact with the soft film 2, so that the colored body 5 can be reliably thermally transferred.

  In addition, this invention is not limited to the said embodiment, It can implement in a various aspect.

  For example, in the above embodiment, the colored body 5 is thermally transferred only from the front surface side of the joined body 1, but the colored body 5 may be thermally transferred to the edge portion 3 on the back surface side as well. In this case, if the mold 6 is pressed only from the front surface side, the temperature on the back surface side of the soft film 2 becomes lower than the temperature on the front surface side. There is. For this reason, about the back side, you may make it heat-transfer by applying heat to the coloring member 4 using another means. As such a method, for example, the mold 6 is provided at the same position on the back side as the pressing position of the mold 6 on the front surface side, and the mold 6 is pressed from both sides to thermally transfer the front and back. Etc. are considered.

  Furthermore, in the above-described embodiment, the case where the colored body 5 is thermally transferred to the edge 3 has been described. However, the present invention is not limited to the edge 3, and for example, when a through hole of a string exists in the joined body 1, Similarly, thermal transfer of the colored body 5 can be performed simultaneously with the welding of the flexible film 2 for the portion.

The figure which shows the formation state of the joined body of the soft film in one embodiment of this invention The figure which shows the formation process of the edge in the same form External view showing joined body of soft film in same form AA sectional view in FIG. The figure which shows the formation state of the conjugate | zygote colored the edge in a prior art example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Bonded body of soft film 2 ... Soft film (2a is front side film, 2b is back side film)
DESCRIPTION OF SYMBOLS 3 ... Edge part 4 ... Coloring member 5 ... Colored body 6 ... Mold 7 ... Decoration pressing part 7a ... Plane part 8 of decoration pressing part ... Outer blade 8a ..Pointed portion 9 of outer blade ... Base base 60 ... Tool

Claims (4)

In the joined body of the soft film formed by heat-welding the soft film provided on the front and back, having a heat-weldable soft film on the front and back,
A joined body of soft films, wherein a colored body provided on another coloring member is thermally transferred to welded portions of the front and back soft films.   The joined body of a soft film according to claim 1, wherein the colored body provided on the other coloring member includes at least one of ink, a pigment, and a metal film. In the soft film joining method of forming a joined body of soft films by welding a plurality of soft films that can be thermally welded from the front and back,
A step of superimposing a coloring member having a colored body on the overlapped soft film;
In a state where the coloring members are overlaid, pressing the mold from the front or back side to the coloring members and the soft film, and welding the soft film to form an edge; and
Removing the mold and coloring member after forming the edge;
Removing the soft film outside the edge formed by the thermal welding;
A method for joining soft films, comprising: The soft film according to claim 3, wherein the coloring member has at least one of ink, pigment, or deposited metal film applied to a member having a melting point higher than that of the soft film. Joining method.

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