CN201099024Y - Sheet structure of polylactic acid and veneer - Google Patents

Abstract

The utility model is a sheet structure of polylactic acid and thin wood chips, in which a polylactic acid layer is adhered to one surface or both surfaces of the wood chips, the polymer is made of natural cereal crops, so that the wood chips are not easy to crack, and a food-grade packaging paper layer is adhered to the outer surface or both sides of the polylactic acid layer; the container made according to the above structure is made of biodegradable material, which has environmental protection effect for natural ecology.

Description

Lamellar structure of polylactic acid and wood veneer

technical field

The utility model relates to a flaky structure of polylactic acid and veneer.

Background technique

At present, many materials used in food containers on the market still use PE (polyethylene) film. PE (polyethylene) film is a kind of high molecular polymer, which cannot be decomposed naturally. It has always been a serious problem in environmental protection. In the era of rising awareness of environmental protection, coupled with the gradual depletion of earth resources, the use of materials and renewable resources that have little impact on the natural environment and ecology has become the current trend. The continued and large-scale use of PE (polyethylene) films has Its room for improvement.

However, traditional wood chip containers are prone to mold and insect damage. Not only is it difficult to store and maintain, it will also have an impact on the hygiene and safety of the food contained in it, and the oil and water resistance is not good. It is not convenient to take it.

It can be seen that the above-mentioned existing method still has many deficiencies, is not a perfect design, and needs to be improved urgently.

In view of the shortcomings derived from the above-mentioned existing methods, the designer of the utility model of this case is eager to improve and innovate, and after years of painstaking research, he finally successfully developed and completed the sheet structure of the polylactic acid and veneer.

Contents of the invention

The purpose of this utility model is to provide a sheet structure of polylactic acid and veneer. Polylactic acid is also called PLA (Poly Lactic Acid), which is a biodegradable biomolecular polymer. When the finished product is disposed of, it can be absorbed by nature, greatly reducing the wood chip structure of the wood chip product that pollutes the environment.

In order to achieve the above object, the technical scheme adopted by the utility model includes:

A flaky structure of polylactic acid and veneer, characterized in that: it includes: a veneer layer, which is a flat wood chip with a thickness of 0.1cm to 0.3cm; and, a polylactic acid layer, which is a biodegradable polymer objects, adhered to the surface of the veneer.

In order to achieve the above object, the technical solution adopted by the utility model also includes:

A flaky structure of polylactic acid and veneer, characterized in that: it includes: a veneer layer, which is a flat wood chip with a thickness of 0.1cm to 0.3cm; a polylactic acid layer, which is a biodegradable polymer, is adhered to the surface of the veneer layer; and, a food-grade wrapping paper layer is adhered to the surface of the polylactic acid layer.

In order to achieve the above object, the technical solution adopted by the utility model also includes:

A flaky structure of polylactic acid and veneer, which includes: a veneer layer, which is a flat wood chip with a thickness of 0.1 cm to 0.3 cm; a polymer layer, which is adhered to the surface of the veneer layer; A polylactic acid layer, which is a biodegradable polymer, adheres to the surface of the polymer layer; and, a food-grade wrapping paper layer, adheres to the surface of the polylactic acid layer.

Compared with the prior art, the utility model adopting the above-mentioned technical solution has the advantages of:

1. The materials used in this utility model can be recycled by nature, unlike plastic materials, which cannot be decomposed by microorganisms in nature, so the environmental protection problems caused are relatively small.

2. The polylactic acid of this utility model is a polymer extracted from crops, and the used products can be returned to nature in the form of compost, and the source of raw materials can be said to be inexhaustible; while the existing plasticizing The material is derived from petroleum. Judging from the current rate of human energy use, there will soon be a day of energy depletion; therefore, the use of polylactic acid materials can reduce the use of energy and prolong the sustainable development of the earth.

3. Generally, traditional wood chips are easy to leave powder, mildew, bacteria, or oil and water seepage. This kind of sheet structure adhered to polylactic acid can achieve the functions of oil and water resistance and increase sanitary conditions.

Description of drawings

Fig. 1 is the structural representation of veneer of the present utility model and single-sided polylactic acid sheet;

Fig. 2 is the utility model veneer and polylactic acid flake structure schematic diagram on both sides;

Fig. 3 is a schematic diagram of the sheet structure of the utility model veneer, single-sided polylactic acid and single-sided food-grade wrapping paper;

Fig. 4 is a schematic diagram of the sheet structure of the utility model veneer, polylactic acid on both sides and food grade wrapping paper on both sides;

Fig. 5 is a schematic diagram of the structure of the thin wood chip, single-sided polymer, single-sided polylactic acid and single-sided food-grade packaging paper of the utility model;

Fig. 6 is a schematic diagram of the structure of the thin wood chip, the double-sided polymer, the double-sided polylactic acid, and the double-sided food-grade wrapping paper of the utility model;

Fig. 7 is the embodiment (1) that utilizes the sheet structure of polylactic acid and veneer to make container;

Fig. 8 is the embodiment (two) that utilizes the lamellar structure of polylactic acid and veneer to make container;

Fig. 9 is an embodiment (3) of a container made of a sheet structure of polylactic acid and veneer.

Explanation of reference signs: 1- wood chip layer; 2- polylactic acid layer; 3- paper material layer; 4- polymer layer; 91- hook structure.

Detailed ways

The purpose of this utility model is to provide a sheet structure of polylactic acid and veneer. Polylactic acid is also called PLA (Poly Lactic Acid), which is a biodegradable biomolecular polymer. When the finished product is disposed of, it can be absorbed by nature, greatly reducing the wood chip structure of the wood chip product that pollutes the environment.

In order to achieve the above-mentioned purpose, the flaky structure of the polylactic acid and the veneer of the utility model is that the polylactic acid is adhered to one surface or both sides of a plurality of flat veneers, so as to improve the characteristics that the veneer is easy to crack. The selection of the veneer is for example : Poplar, birch or FALCATA (a wood species belonging to leguminous plants); or add a polymer layer between the veneer layer and the polylatex layer to improve the temperature resistance of this sheet structure, and finally in Food-grade wrapping paper is adhered to the outermost layer as an interface for contacting food.

Please refer to Fig. 1, the flaky structure of polylactic acid and veneer of the present invention mainly comprises a wood chip layer 1, and a layer of polylactic acid is adhered to one surface of the wood chip layer 1 by means of mechanical heating and pressure. Layer 2 makes the veneer layer 1 not easy to crack, and because the polylactic acid layer 2 is a biodegradable biomolecular polymer, it increases the function of oil and water resistance. Wherein, the thin wood layer 1 is a flat wood chip with a thickness of 0.1cm to 0.3cm, for example: poplar, birch or FALCATA (a wood species belonging to the leguminous plant); the polylactic acid layer 2, PLA (Poly Lactic Acid), a biodegradable biomolecular polymer, is a polymer made from natural cereal crops.

FIG. 2 shows that a polylactic acid layer 2 is adhered on both surfaces of a veneer layer 1 by means of mechanical heating and pressure.

Figure 3 shows that the polylactic acid layer 2 is adhered to an outer surface of the veneer layer 1, and the food-grade wrapping paper layer 3 is adhered to the other outer surface of the veneer layer 1 by means of mechanical heating and pressure, increasing The container made of this kind of sheet structure is hygienic and safe when holding food.

FIG. 4 shows that a food-grade wrapping paper layer 3 is adhered to the two outer surfaces of the veneer layer 1 and the polylactic acid layer 2 by means of mechanical heating and pressure.

The sheet-like structure shown in Figure 5 is that a layer of high molecular polymer layer 4 is first adhered to one surface of the veneer layer 1 by means of pressure and heating, and then the polylactic acid layer 2 and the layer of polylactic acid are adhered sequentially by means of heat and pressure On the other side of the veneer layer 1, a food-grade wrapping paper layer 3 is adhered; by virtue of the high molecular polymer layer 4, the temperature resistance of this sheet structure is improved.

The sheet-like structure shown in Figure 6 is that a layer of high molecular polymer layer 4 is first adhered to the two surfaces of the veneer layer 1 by pressure and heating, and then the polylactic acid layer 2 and the polylactic acid layer are adhered by heating and pressure in sequence. Food grade wrapping paper layer 3.

Fig. 7 shows a square container made by utilizing the sheet structure of above-mentioned polylactic acid and veneer, which can also be made into hexagonal, octagonal or polygonal containers.

Fig. 8 shows a circular container made by utilizing the sheet-like structure of polylactic acid and veneer, which can also be made into an elliptical container.

FIG. 9 shows a container made of the above polylactic acid and veneer sheet structure, wherein the connecting portion is made of two corresponding hook structures 91 .

The above description is only illustrative, rather than restrictive, of the present utility model. Those of ordinary skill in the art understand that many modifications, changes or equivalents can be made without departing from the spirit and scope defined in the claims. But all will fall within the limitable scope of the claims of the present utility model.

Claims (6)

1. A sheet structure of polylactic acid and veneer, characterized in that: it comprises: A thin wood layer, which is a flat wood chip with a thickness of 0.1 cm to 0.3 cm; and, A layer of polylactic acid, a biodegradable polymer, is adhered to the surface of the veneer layer. 2. The sheet structure of polylactic acid and veneer according to claim 1, wherein said polylactic acid layer is adhered to one or both sides of the veneer layer. 3. A sheet structure of polylactic acid and veneer, characterized in that: it comprises: A thin wood layer, which is a flat wood chip with a thickness of 0.1cm to 0.3cm; a layer of polylactic acid, a biodegradable polymer, adhered to the surface of the wood veneer layer; and, A food-grade wrapping paper layer is adhered to the surface of the polylactic acid layer. 4. The sheet-like structure of polylactic acid and veneer according to claim 3, wherein the polylactic acid layer and the food-grade wrapping paper layer are sequentially adhered to one or both sides of the veneer layer. 5. A sheet structure of polylactic acid and veneer, comprising: A thin wood layer, which is a flat wood chip with a thickness of 0.1cm to 0.3cm; A high molecular polymer layer is adhered to the surface of the veneer layer; a layer of polylactic acid, a biodegradable polymer, adhered to the surface of the polymer layer; and, A food-grade wrapping paper layer is adhered to the surface of the polylactic acid layer. 6. The sheet structure of polylactic acid and veneer according to claim 5, wherein said polymer layer, polylactic acid layer and food-grade wrapping paper layer are adhered to one side of the veneer layer in sequence or both sides.

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