JP3138598U - Flaky structure - Google Patents

Abstract

The present invention provides a piece-like structure that is easy to handle without causing the possibility of mold damage and insect damage as compared with simple wood pieces, without causing fear of being naturally decomposed even when discarded.
A flat wooden piece 1 having a thickness of 0.1 cm to 0.3 cm and a polylactic acid layer 2 made of cereal as a raw material and laminated on the surface of the wooden piece 1 are provided. Food wrapping paper is laminated on the surface of the polylactic acid layer 2, or a polymer polymer layer having heat resistance is laminated on the surface of the piece of wood 1, and further, the polylactic acid layer 2 and food wrapping paper are laminated on the surface. Sometimes.
[Selection] Figure 1

Description

  The present invention relates to a piece-like structure comprising a polylactic acid layer and a piece of wood suitable as a material for containers and the like.

Currently, it is common to use PE (polyethylene) as a material for food containers. PE is a kind of high molecular weight polymer and cannot be naturally decomposed, so it is a serious problem in terms of environmental protection.
As resources are gradually depleted and awareness of environmental protection is increasing, the use of renewable materials that do not adversely affect the ecosystem has become a current trend, which has led to a large consumption of PE. There is a need for improvement.

On the other hand, containers using wood chips as an environmentally friendly material have been known for a long time, but have the disadvantage that mold grows and insect damage is likely to occur.
In addition, containers made of wood pieces have a problem in storage, and the food contained therein also has a sanitary effect. Furthermore, such a container is inferior in oil resistance and waterproofing performance, so that it is easy to be stained and sticky when cooked food is added, and is inconvenient to handle.

  The problem to be solved by the present invention is to provide a piece-like structure that is easy to handle because there is no risk of damage to the environment due to natural decomposition even when discarded, and it is less prone to mold and insect damage than simple pieces of wood. There is.

The flake structure of the present invention comprises a flat wooden piece having a thickness of 0.1 cm to 0.3 cm, and a polylactic acid layer made of cereal as a raw material and laminated on the surface of the wooden piece.
The polylactic acid layer is laminated on one side or both sides of the piece of wood.
Further, the flake structure of the present invention includes a flat wooden piece having a thickness of 0.1 cm to 0.3 cm, a polylactic acid layer made of cereal as a raw material and laminated on the surface of the wooden piece, and the polylactic acid layer Food wrapping paper laminated on the surface.
The polylactic acid layer and food packaging paper are laminated on one or both sides of the wood piece.

Furthermore, the flake structure of the present invention is a flat wooden piece having a thickness of 0.1 cm to 0.3 cm, a heat-resistant polymer layer laminated on the surface of the wooden piece, and cereal as a raw material. And a polylactic acid layer laminated on the surface of the polymer layer and a food wrapping paper laminated on the surface of the polylactic acid layer.
The polymer layer, the polylactic acid layer, and food packaging paper are laminated on one or both sides of the wooden piece.

Since the flake structure of the present invention is naturally decomposed by microorganisms even if discarded, there is no possibility of destroying the environment or adversely affecting the ecosystem.
Moreover, since it uses wood and polylactic acid mainly made from agricultural products as raw materials, it can be absorbed into the ground and function as a fertilizer after decomposition, thereby suppressing waste of petroleum resources.
Furthermore, since the polylactic acid layer is laminated on the wood pieces, not only the strength is increased, but also the residue of wood powder, the generation of mold and insects can be prevented, and the waterproof and oilproof properties are increased, which is also preferable for hygiene. .

FIG. 1 shows a first embodiment of the present invention.
The piece-like structure of this example includes a flat piece of wood 1 and a polylactic acid (PLA) layer 2 laminated on one side of the piece of wood 1.
The piece of wood 1 is made of wood such as poplar, straw, FALCATA (leguminous tree), and has a thickness of 0.1 cm to 0.3 cm.
The polylactic acid layer 2 is made of cereal as a raw material, and is formed by forming a polylactic acid that can be decomposed by microorganisms into a predetermined thickness according to the application, and is pressed against one side of the wooden piece 1 while being heated and pressurized.

FIG. 2 shows a second embodiment of the present invention.
The flaky structure of this example has the same structure as that of Example 1 except that the polylactic acid layer 2 is laminated on both sides of the piece of wood 1.
In Example 1 and Example 2, since the polylactic acid layer 2 is laminated | stacked on the surface of the piece of wood 1, the piece of wood 1 becomes difficult to tear, and waterproof / oilproof property improves.

FIG. 3 shows a third embodiment of the present invention.
The flaky structure of this example is a flat wooden piece 1 having a thickness of 0.1 cm to 0.3 cm, a polylactic acid layer 2 laminated on one side of the wooden piece 1, and a food laminated on the surface of the polylactic acid layer 2. Wrapping paper 3.
The food wrapping paper 3 is a sanitary paper in which food is not contaminated with harmful substances even when the food is directly packaged, and is pressed against the surface of the polylactic acid layer 2 by applying pressure while heating. .
Other configurations are the same as those of the first embodiment.

FIG. 4 shows a fourth embodiment of the present invention.
In this piece-like structure, a polylactic acid layer 2 is laminated on both surfaces of a piece of wood 1 by heating and pressing, and a food wrapping paper 3 is laminated on the surface of the polylactic acid layer 2 by heating and pressing. .
Other configurations are the same as those of the third embodiment.
In Examples 3 and 4, in addition to the effects of Examples 1 and 2, sanitary safety when touching food is increased.

FIG. 5 shows a fifth embodiment of the present invention.
The piece-like structure of the present example is a flat wooden piece 1 having a thickness of 0.1 cm to 0.3 cm, a heat-resistant polymer layer 4 laminated on one side of the piece 1, and a polymer. A polylactic acid layer 2 laminated on the surface of the layer 4 and a food packaging paper 3 laminated on the surface of the polylactic acid layer 2 are provided.
The polymer layer 4 is heated and pressurized and pressed onto the surface of the piece of wood 1.
Other configurations are the same as those in the third embodiment.

FIG. 6 shows a sixth embodiment of the present invention.
The flake structure is formed by laminating a polymer polymer layer 4 having heat resistance on both surfaces of a piece of wood 1, laminating a polylactic acid layer 2 on the surface of the polymer polymer layer 4, and food on the surface of the polylactic acid layer 2 The wrapping paper 3 is laminated.
Other configurations are the same as those of the fifth embodiment.
According to Examples 5 and 6, the heat resistance of the piece-like structure is improved.

FIG. 7 shows a plane square container 5a using the piece-like structure of the present invention.
The bottom plate 6 and the side wall 7 of the container 5a are formed of a flat piece-like piece structure. The illustrated container 5a has a rectangular plane, but may be a polygon such as a hexagon or an octagon.
In the flat circular container 5 b shown in FIG. 8, the band-shaped piece-like structure is curved and both ends thereof are joined to each other by the concave-convex fitting structure 91 to form the annular side wall 7. In addition, the planar shape of the container 5b can be an ellipse.
A container 5c shown in FIG. 9 is formed by bending a strip-like piece-like structure into a polygonal shape, and joining both ends thereof with an uneven fitting structure 91 to form a side wall 7.

Sectional drawing of the piece-like structure which shows Example 1 of this invention. Sectional drawing of the piece-like structure which shows Example 2 of this invention. Sectional drawing of the piece-like structure which shows Example 3 of this invention. Sectional drawing of the piece-like structure which shows Example 4 of this invention. Sectional drawing of the piece-like structure which shows Example 5 of this invention. Sectional drawing of the piece-like structure which shows Example 6 of this invention. The perspective view which shows the 1st embodiment of the container using the piece-like structure of this invention. The perspective view which shows the 2nd embodiment of the container using the piece-like structure of this invention. The perspective view which shows the 3rd embodiment of the container using the piece-like structure of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wood chip 2 Polylactic acid layer 3 Food packaging paper 4 High polymer layer 5a, 5b, 5c Container 6 Bottom plate 7 Side wall 91 Concave / concave fitting structure

Claims (6)

  A piece-like structure comprising: a flat piece of wood having a thickness of 0.1 cm to 0.3 cm; and a polylactic acid layer made of cereal as a raw material and laminated on the surface of the piece of wood.   The piece-like structure according to claim 1, wherein the polylactic acid layer is laminated on one side or both sides of the piece of wood.   A flat wooden piece having a thickness of 0.1 cm to 0.3 cm, a polylactic acid layer made of cereal as a raw material and laminated on the surface of the wooden piece, and a food packaging paper laminated on the surface of the polylactic acid layer, A piece-like structure characterized by comprising:   The piece-like structure according to claim 3, wherein the polylactic acid layer and food packaging paper are laminated on one side or both sides of the wood piece.   A plate-shaped piece of wood having a thickness of 0.1 cm to 0.3 cm, a heat-resistant polymer layer laminated on the surface of the piece, and cereal as a raw material, on the surface of the polymer layer A piece-like structure comprising: a laminated polylactic acid layer; and a food packaging paper laminated on the surface of the polylactic acid layer.   The piece-like structure according to claim 5, wherein the polymer layer, the polylactic acid layer and the food packaging paper are laminated on one side or both sides of the piece of wood.

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