JP4044575B2 - Method for manufacturing decorative three-dimensional seal - Google Patents

Description

  The present invention relates to a decorative sticker that is attached to a body part such as a fingernail, clothing, or a mobile phone, and more particularly to a manufacturing method in which such a seal is a three-dimensional structure.

  Conventionally, decoration is generally performed on portable objects such as fingers, toenails, faces, clothes, and mobile phones, but seals that are easy to attach and detach are widely used as such decorative bodies.

  However, this kind of sticker was a substitute for a sticky layer formed on the back of a paper piece with a pattern, and it did not have a three-dimensional effect or volume, and was poor in design.

  Therefore, in order to produce a decorative body including a three-dimensional main body layer, an adhesive is printed on a release sheet to form an adhesive layer, and a main body layer made of a foamed resin is printed thereon, A method has been proposed in which the main body layer has an area larger than that of the adhesive layer, and the portion protruding from the adhesive layer is three-dimensionally deformed by heat treatment (for example, Patent Document 1).

JP 2004-329578 A

  However, according to the method disclosed in Patent Document 1, although a volume feeling can be given as a whole by foaming of the main body layer by heat treatment, it cannot be deformed as desired.

  In this regard, Patent Document 1 describes that the part of the main body layer that protrudes from the adhesive layer by the heat treatment process is warped to become a petal, but the main body layer is made of a foamed resin on the adhesive layer. Since it is only formed with a larger area, it does not necessarily deform into a concave shape like a petal when such a body layer is heat-treated.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a manufacturing method capable of finishing a decorative three-dimensional structure seal into a desired shape according to the type.

In order to achieve the above object, the present invention applies an adhesive to the release sheet to form an adhesive layer, and applies a foamed resin on the release sheet at the periphery of the adhesive layer. 1 is formed, and then a resin is applied onto the adhesive layer and the first foamed layer to form a flexible non-adhesive layer, and the first foamed layer is formed on the non-adhesive layer. A resin containing a foaming agent is applied to a portion opposite to the first foaming layer to form a second foaming layer having a foaming property smaller than that of the first foaming layer, and a colorant containing resin is applied on the second foaming layer for coloring. After forming the layer, the non-adhesive layer sandwiched between the two foamed layers is bent toward the second foamed layer by heating and foaming the first foamed layer and the second foamed layer. .

On the other hand, as another method, an adhesive is applied on the release sheet to form an adhesive layer, and a resin is applied so as to cover the adhesive layer so that the release sheet has a larger area than the adhesive layer. A flexible non-adhesive layer is formed, then a foamed resin is applied to the peripheral portion of the non-adhesive layer to form a foamed layer, and a colorant-containing resin is applied onto the foamed layer to form a colored layer Then, the non-adhesive layer is deformed by heating and foaming the foam layer .

  According to the present invention, since the foam layer is heated and foamed, and the non-adhesive layer in close contact with the foam layer is bent and deformed, a three-dimensional structure seal with a sense of volume and a high decorative effect can be obtained.

In particular, to form a first foam layer on the release sheet at the periphery of the pressure-sensitive adhesive layer, to form a non-adhesive layer of flexible over the adhesive layer and the first foam layer, the non By forming a second foam layer having a lower foamability than the first foam layer on the adhesive layer at a portion facing the first foam layer, the two foam layers are heated and foamed so that the non-between The adhesive layer can be bent toward the second foam layer, which is less foamable than the first foam layer, and the overall volume feeling is amplified by foaming the first and second foam layers. .

  In addition, a flexible non-adhesive layer having a larger area than the adhesive layer is formed on the release sheet so as to cover the adhesive layer, and a foam layer is formed on the peripheral portion of the non-adhesive layer, thereby forming foam. The underlying non-adhesive layer can be bent downward by heat foaming of the layer.

  In other words, according to the present invention, the non-adhesive layer can be reliably bent in the desired direction due to the relative positional relationship between the foam layer and the non-adhesive layer, and thus corresponds to the entire design including the non-adhesive layer. A high-quality three-dimensional structure seal can be obtained.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is an enlarged schematic plan view showing a preferred embodiment of the decorative three-dimensional structure seal according to the present invention. In FIG. 1, reference numeral 1 denotes a release sheet (separator) made of a plastic film such as polyethylene, and a decorative object body 2 simulating flowers is provided on the surface thereof. The ornament main body 2 is a laminated body composed of a plurality of layers, and each layer is sequentially formed into a predetermined shape using an individual screen mold (not shown).

  Then, according to the decorative three-dimensional structure seal, the decorative body 2 is peeled off from the release sheet 1 in use, and the decorative body 2 is attached to a decoration target (nail or other body part, clothes, mobile phone, etc.). Can be worn.

  FIG. 1 shows an example in which a single decorative object body 2 is provided on a release sheet 1. However, in a small decorative object body 2 to be attached to a nail or the like, the same release sheet 1 is provided. A large number of ornament main bodies 2 having the same or different forms are provided.

  Here, the manufacturing method of the decorative three-dimensional structure seal as described above will be described. In FIG. 2, reference numeral 21 denotes an adhesive layer, and this adhesive layer 21 is an acrylic resin or rubber elastomer having adhesiveness at room temperature. It is formed by applying an adhesive made of In addition, the screen type | mold used for the formation shall be a flat plate which opened the circular opening corresponding to the floral heart part shown, for example in FIG.

And after formation of the adhesion layer 21, resin containing a foaming agent is apply | coated on the release sheet 1 in the peripheral part, and the foaming layer 22A is formed. For example, the foam layer 22A is formed by using a screen mold in which heart-shaped openings are radially formed in a planographic plate corresponding to the petals of the floral pattern shown in FIG. This is done by allowing the foamed resin to permeate through the opening.

As the foamed resin, a resin obtained by mixing a foaming agent that generates gas by heating, such as sodium hydrogen carbonate or ammonia water, with a thermoplastic resin is used. The foam layer 22A is a flat thin film at the time of formation, and is foamed (expanded) by a heat treatment process described later. The foaming rate can be adjusted by the amount of the foaming agent mixed.

Next, on the adhesive layer 21 and the foamed layer 22A , a transparent resin (a copolymer of a urethane resin and a silicon resin in this example) is applied to form a flexible non-adhesive layer 23 (clear layer). Form. For the formation of the non-adhesive layer 23, for example, a screen type having an opening corresponding to the overall shape of the floral pattern shown in FIG. 1 is used. The non-adhesive layer 23 is firmly bonded and integrated with the lower adhesive layer 21 and the foamed layer 22A by hardening of the resin material forming the non-adhesive layer 23.

Further, after the non-adhesive layer 23 is formed , a foamed resin is applied thereon to form the foam layers 22B and 22C. In this example, the foam layer 22 </ b> B is formed on the floral center of the floral pattern shown in FIG. 1 using the same screen type as the screen type used for forming the adhesive layer 21, facing the adhesive layer 21. The foam layer 22C (second foam layer) is the same screen type as that used for forming the foam layer 22A (first foam layer), and is shown in FIG. 1 so as to face the foam layer 22A. It is formed on the petal part of the flower pattern.

  As the foamed resin for forming the foam layers 22B and 22C, a foaming agent that generates a gas upon heating, such as sodium hydrogen carbonate or ammonia water, is mixed with a thermoplastic resin. The foamability is set smaller than the foam layer 22A. For this purpose, the thickness of the foam layer 22C is made thinner than the foam layer 22A, or the mixing ratio of the foaming agent is made smaller than that of the foam layer 22A.

When the foam layers 22B and 22C are thus formed on the non-adhesive layer 23, a colored resin is then applied to the foam layers 22B and 22C to form the color layers 24A and 24B.

  The resin containing a colorant is a mixture of an acrylic resin or a urethane resin and a colorant (dye or pigment). In this example, different colored resins are used for the colored layer 24A and the colored layer 24B. Are formed individually. In particular, the colored layer 24 </ b> A is formed in a portion facing the adhesive layer 21 using a screen type in which a circular opening is formed in a planographic plate corresponding to the floral center of the floral pattern shown in FIG. 1. On the other hand, the colored layer 24 </ b> B is formed in a portion facing the foam layer 22 using a screen type in which heart-shaped openings are radially formed in the planographic plate corresponding to the petals of the floral pattern shown in FIG. 1.

  Further, a lame-containing resin or a transparent resin is applied on the colored layers 24A and 24B as necessary to form the top layer 25, but the step of forming the top layer 25 can be omitted.

  Here, when the layers 21 to 25 are formed on the release sheet 1 as described above to form a laminated structure as shown in FIG. 2, the laminated structure is placed on the release sheet 1 in a heating furnace. The foamed layers 22A to 22C are heated and foamed at 95 to 140 ° C.

  Then, the portion of the non-adhesive layer 23 sandwiched between the foam layers 22A and 22C (the petal portion of the floral pattern shown in FIG. 1) expands more than the foam layer 22A as shown in FIG. 3 due to the expansion of the foam layers 22A and 22C. It is bent toward the foam layer 22 </ b> C side (the direction away from the release sheet) having a low property, and thereby a three-dimensional ornament main body 2 is completed on the release sheet 1.

  The foam layers 22A and 22C function to bend the non-adhesive layer 23 in a predetermined direction, and the volume of the decorative body 2 is amplified by the foaming of the foam layers 22A to 22C.

Next, FIGS. 4 and 5, the first embodiment the bending direction of the non-adhesive layer showing an example of the opposite. In this example, the adhesive layer 21 is formed on the release sheet 1 in the same manner as in Example 1. However, after the formation, a transparent resin (for example, urethane resin) is formed on the release sheet 1 so as to cover the adhesive layer 21. And a silicone resin copolymer) to form a flexible non-adhesive layer 23 (clear layer) having an area larger than that of the adhesive layer 21.

  The non-adhesive layer 23 of this example is also formed by using a screen mold having an opening corresponding to the overall shape of the floral pattern shown in FIG. 1, and the non-adhesive layer 23 is formed on the lower layer by curing the resin material forming this. Although firmly bonded and integrated with the adhesive layer 21, it is not integrated with the release sheet 1 due to the action of the release agent.

  Here, after the non-adhesive layer 23 is formed, a foamed resin is applied thereon to form the foamed layer 22. The foam layer 22 uses, for example, a screen type in which heart-shaped openings are formed in a flat plate corresponding to the petals of the floral pattern shown in FIG. 1, and the peripheral portion on the non-adhesive layer 23 (the flower in FIG. 1). The petal part of the handle is formed.

Then, when the non-adhesive layer 23 on the form the foamed layer 22, then (corresponding to a colored layer 24B in the first embodiment) color layers 24 as in Example 1. The colorant-containing resin is applied onto the foam layer 22 A lame-containing resin or a transparent resin is applied onto the colored layer 24 as necessary to form the top layer 25.

  Note that the step of forming the top layer 26 can be omitted. Further, the colored layer 24 is not necessarily required. For example, the colored layer 25 can be omitted by using a colored resin for the non-adhesive layer 23 or the foamed layer 22.

Next, when the layers 21 to 25 are formed on the release sheet 1 as described above to form a laminated structure as shown in FIG. 4 , the laminated structure is placed on the release sheet 1 in a heating furnace. It introduce | transduces or it presses with a hotplate, and this makes the foaming layer 22 heat-foam at 95-140 degreeC.

Then, the portion of the non-adhesive layer 23 (the petal portion of the floral pattern shown in FIG. 1) with which the foam layer 22 is in close contact with the release sheet 1 as shown in FIG. A three-dimensional decorative body 2 is completed on the release sheet 1.

  Although the present invention has been described above, the ornament main body 2 is not limited to the one imitating a flower, and the ornament main body 2 can be formed in various forms by changing the screen type.

Schematic plan view showing a configuration example of a decorative three-dimensional structure seal according to the present invention Explanatory drawing which shows the manufacture example of the seal | sticker which concerns on this invention Explanatory drawing which shows the state which heat-processed the laminated structure of FIG. Explanatory drawing which shows the other example of manufacture of the seal concerning the present invention. Explanatory drawing which shows the state which heat-processed the laminated structure of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Release sheet 2 Decorative article body 21 Adhesive layer 22, 22A, 22B, 22C Foam layer
23 Non-adhesive layer 24, 24A, 24B Colored layer 25 Top layer

Claims (2)

A pressure-sensitive adhesive is applied onto the release sheet to form an adhesive layer, and a foam-containing resin is applied to the release sheet at the periphery of the adhesive layer to form a first foam layer, A resin is applied onto the adhesive layer and the first foam layer to form a flexible non-adhesive layer, and a resin containing a foaming agent is applied to the portion facing the first foam layer on the non-adhesive layer. The first foam layer is applied to form a second foam layer having a lower foamability than the first foam layer, and a colored layer is formed on the second foam layer by applying a resin containing a colorant. A method for producing a decorative three-dimensional structure seal, characterized in that a non-adhesive layer sandwiched between both foam layers is bent toward the second foam layer by heating and foaming the foam layer and the second foam layer . A flexible non-adhesive layer having a larger area than the adhesive layer on the release sheet by applying an adhesive on the release sheet to form an adhesive layer and applying a resin so as to cover the adhesive layer Then, a foamed resin is applied to the peripheral part on the non-adhesive layer to form a foamed layer, and a resin containing a colorant is applied to the foamed layer to form a colored layer, and then the foam is formed. A method for producing a decorative three-dimensional seal, wherein the non-adhesive layer is deformed by heating and foaming the layer .

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