JP6259010B2 - Multi-layered paper - Google Patents

Description

  The present specification relates to a multilayer structured paper in which the paper is laminated in multiple layers. In particular, it relates to a multilayer structured paper having at least corrugated paper layers.

  Patent Document 1 discloses a corrugated cardboard sheet. The cardboard sheet includes a transparent plastic film and a paper layer on the surface. A printing layer is formed on the front surface and the back surface of the transparent plastic film. As a result, the printed layers on the front and back surfaces of the transparent plastic film are visually recognized from the surface of the cardboard sheet.

JP 2012-24999 A

  Design properties are an important factor for paper products used for packaging boxes, envelopes, and the like, such as the above corrugated cardboard sheets. In the present specification, there is provided a technique for arranging a pattern that is visible from the surface without using a transparent plastic film in a multilayer structure paper in which paper is laminated in multiple layers.

  The technology disclosed in this specification is a multilayer structure paper in which a plurality of papers are overlapped. The multilayer structured paper includes a first layer paper that is the outermost layer and a second layer paper that is located on the back side of the first layer paper and has a corrugated shape. A pattern that is visible through the first layer paper from the front surface of the first layer paper is disposed on the back surface of the first layer paper.

  In the above configuration, the pattern arranged on the back surface of the outermost layer paper is visually recognized through the paper. According to this structure, the pattern visible from the surface can be arrange | positioned without using a transparent plastic film. As a result, it is possible to provide an appearance with a different impression as compared to the case where the pattern arranged on the outermost surface of the multilayer structured paper is directly visually recognized or the case where the pattern is visually recognized through a transparent plastic sheet.

  Food trays made from the multilayer structured paper described above are also new and useful. In this food tray, it is possible to prevent the pattern, that is, the color material constituting the pattern, from directly contacting the food without using a transparent film.

The perspective view of the multilayer structure paper of 1st Example is shown. The enlarged view of the area | region X of FIG. 1 is shown. The disassembled perspective view of the multilayer structure paper of 1st Example is shown. The perspective view which shows the back surface of the paper of the outermost layer of 1st Example is shown. The side view of the multilayer structure paper of 2nd Example is shown. The perspective view of the food tray using multilayer structure paper is shown. The perspective view of the packaging box using multilayer structure paper is shown.

  The main features of the embodiments described below are listed. The technical elements described below are independent technical elements and exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Absent.

(Feature 1) In the multilayer structured paper disclosed in the present specification, the pattern may be formed of a color material having a color different from the color of the first layer paper on the back surface of the first layer paper.

(Feature 2) In the multilayer structured paper disclosed in the present specification, the first layer paper may be directly superimposed on the surface of the second layer paper.

(Feature 3) The multilayer structured paper disclosed in the present specification includes a first layer paper, a second layer paper, and a third layer paper that is directly superimposed on the back surface of the second layer paper. It may be a three-layer structure. Or furthermore, the paper of the 4th layer or more may be piled up.

(Feature 4) The multilayer structure paper disclosed in the present specification may have a two-layer structure constituted by a first layer paper and a second layer paper.

(First embodiment)
FIG. 1 shows a perspective view of the three-layer structure paper 10 of this embodiment, and FIG. 2 shows an enlarged view of a region X in FIG. FIG. 3 shows an exploded perspective view of the three-layer structured paper 10. As shown in FIGS. 1 to 3, the three-layer structured paper 10 is composed of three layers of paper 12, 14, and 16. In the three-layer structured paper 10, a first layer paper 12, a second layer paper 14, and a third layer paper 16 are arranged in order from the uppermost layer (that is, the outermost layer). The third layer paper 16 is a flat sheet-like paper. The third layer paper 16 is located in the outermost layer (that is, the backmost layer) of the three-layer structured paper 10. The third layer paper 16 is made of white paper. In the present specification, for convenience, the first layer paper 12 is described as the outermost layer, and the third layer paper 16 is described as the outermost layer. However, when the three-layer structured paper 10 is used for a box or the like, the first layer paper 12 may be disposed on the surface of the box or the like, or the third layer paper 16 may be disposed on the surface of the box or the like. Good.

  The second layer paper 14 is bonded to one surface of the third layer paper 16. The second layer paper 14 has a corrugated shape over the entire surface. The second layer paper 14 is made of white paper having the same color as the third layer paper 16. The first layer paper 12 is bonded to the surface of the second layer paper 14 opposite to the surface to which the third layer paper 16 is bonded.

  The first layer paper 12 is arranged on the outermost layer of the three-layer structured paper 10. Similar to the third layer paper 16, the first layer paper 12 is a flat sheet-like paper. That is, the three-layer structured paper 10 can be said to be a corrugated cardboard in which the second layer paper 14 is centered and each of the first layer paper 12 and the third layer paper 16 is a liner. The first layer paper 12 is made of white paper having the same color as the second layer paper 14 and the third layer paper 16.

  As shown in FIG. 4, a pattern 20 is arranged on the back surface 12 a bonded to the second layer paper 14 of the first layer paper 12. The pattern 20 is printed on the back surface 12a of the first layer paper 12 with black ink. The pattern 20 is not limited to the patterns shown in FIGS. 1 to 4, and may be other patterns, characters, symbols, photographs, and the like. On the other hand, no pattern is arranged on the surface 12 b of the first layer paper 12, that is, the outermost surface of the three-layer structure paper 10.

  The pattern 20 can be formed by printing using a single color or a plurality of colors such as blue, red, green, etc. in addition to the black ink. In the present embodiment, printing ink is an example of “coloring material”. The pattern 20 is drawn in a color other than the colors of the first layer paper 12 and the second layer paper 14.

(Second embodiment)
As shown in FIG. 5, the multilayer structured paper of the present embodiment is a two-layer structured paper 50 including a first layer paper 12 and a second layer paper 14. The two-layer structured paper 50 can be said to be a single-sided cardboard. Other configurations are the same as those of the three-layer structured paper 10.

  As shown in FIG. 6, the three-layer structured paper 10 and the two-layer structured paper 50 can be used for the food tray 100. In the food tray 100, the first layer paper 12 is disposed on the uppermost surface on which the food is placed. In this configuration, the pattern 20 can be arranged to be visible from above the food tray 100 without the ink of the pattern 20 coming into contact with the food.

  Further, the three-layer structured paper 10 and the two-layer structured paper 100 are not limited to the food tray 100, and can also be used in the packaging box 200 shown in FIG. Alternatively, the three-layer structured paper 10 and the two-layer structured paper 100 can be used for all articles such as envelopes, postcards, files, and book covers. In the food tray 100 and the packaging box 200, the first layer paper 12 is disposed outside the food tray 100 and the packaging box 200, and the pattern 20 is formed from the outside of the food tray 100 and the packaging box 200. You may arrange | position so that visual recognition is possible.

  In the three-layer structured paper 10 and the two-layer structured paper 100, the pattern 20 is not directly visible, but the first layer paper 12 is seen through. As a result, if the pattern 20 is black and the first layer paper 12 is white, the pattern 20 is slightly grayish. For example, when the pattern 20 is a landscape image, it can be a texture with a hazy and hazy texture. According to this structure, compared with the case where a pattern is arrange | positioned on the back surface of transparent sheets, such as a film, a different texture can be exhibited and a characteristic design can be comprised.

  Moreover, the impression of the pattern 20 can be changed without changing the pattern 20 by changing the type, translucency, and color of the first layer paper 12.

  Furthermore, the three-layer structured paper 10 and the two-layer structured paper 100 can be made of paper without using plastic or the like. In this configuration, recyclability can be improved as compared with a sheet using a material different from paper, such as plastic.

  As mentioned above, although embodiment of this invention was described in detail, these are only illustrations and do not limit a claim. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

(1) In the above-described embodiment, a three-layer structure paper 10 having a three-layer structure and a two-layer structure paper 100 having a two-layer structure are disclosed. However, “multilayer structured paper” is not limited to two or three layers, and may be composed of four or more layers of paper. For example, one or more sheets similar to the second layer paper 14 or the third layer paper 16 are arranged on the surface of the third layer paper 16 opposite to the second layer paper 14 of the third layer paper 16. Also good.

(2) In the above-described embodiment, the pattern 20 is arranged on the back surface 12 a of the first layer paper 12. However, a pattern may also be arranged on the surface of the third layer paper 16 on the second layer paper 14 side.

(3) The thicknesses of the first to third layer papers 12 to 16 may be the same or different.

(4) The colors of the first to third layer papers 12 to 16 are not limited to white, and may be a single color or a plurality of colors such as red, yellow, and blue. In this case, the pattern 20 may be made of a color material different from the colors of the first to third layer papers 12 to 16.

  The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

10: Three-layer structured paper 12: First layer paper 12a: Back surface 12b: Front surface 14: Second layer paper 16: Third layer paper 20: Pattern 100: Food tray 200: Packaging box X: Area

Claims (6)

A multi-layer structure paper in which a plurality of papers are stacked,
The outermost first layer paper;
A second layer paper located on the back side of the first layer paper and having a corrugated shape,
A multilayer structure paper in which a pattern that is visible through the first layer paper from the surface of the first layer paper is disposed on the back surface of the first layer paper.   The multilayer structure paper according to claim 1, wherein the pattern is formed of a color material having a color different from that of the first layer paper on the back surface of the first layer paper.   The multilayer structure paper according to claim 1 or 2, wherein the first layer paper is directly superimposed on the surface of the second layer paper.   The multilayer structure paper is a three-layer structure composed of a first layer paper, a second layer paper, and a third layer paper directly superimposed on the back surface of the second layer paper. 3. The multilayer structured paper according to 3.   The multilayer structured paper according to claim 3, wherein the multilayer structured paper has a two-layer structure composed of a first layer paper and a second layer paper. A food tray made of the multilayer structured paper according to any one of claims 1 to 5,
A food tray in which the first layer paper is disposed on a surface on which food is placed.