Double-layer bag structure with oil absorption and oil repellency

Abstract

This invention relates to a double-layer bag structure that combines oil absorption and repellency. The double-layer bag system comprises an outer bag body and an inner bag body that are fitted together and fixed. The thickness of the outer bag body is greater than that of the inner bag body, or the thickness of the inner bag body is greater than that of the outer bag body. Both the outer and inner bag bodies are coated with a plant-based film. The outer and inner bag bodies can be square bags, V-shaped bags, H-shaped bags, L-shaped bags, flat bags, purse-shaped bags, and nested bags, or other forms. This allows the inner bag body to effectively resist water vapor, while the outer bag body effectively prevents oil and water damage and provides thermal insulation. After use and recycling, the double-layer bag body can naturally degrade in the natural environment, reducing environmental concerns about the use of the double-layer bag body and achieving excellent structural functionality and ease of use.

Claims

1. A double-layer bag structure with oil absorption and oil repellency, comprising: A double-layer bag body, wherein the double-layer bag body is fitted together and fixedly provided with an outer bag body and an inner bag body, wherein the thickness of the outer bag body is greater than that of the inner bag body, and both the outer bag body and the inner bag body are coated and covered with a plant-based film.

2. A double-layer bag structure with oil absorption and oil repellency, comprising: A double-layer bag body, wherein the double-layer bag body is fitted together and fixedly provided with an outer bag body and an inner bag body, wherein the thickness of the inner bag body is greater than that of the outer bag body, and both the outer bag body and the inner bag body are coated and covered with a plant-based film.

3. The double-layered bag structure with oil absorption and oil repellency as described in claim 1 or 2, wherein, The outer bag body has two first inner surfaces and two first outer surfaces, and the plant-based film is selectively coated and covered on the first inner surface or the first outer surface.

4. The double-layered bag structure with oil absorption and oil repellency as described in claim 1 or 2, wherein, The outer bag body has two first inner surfaces and two first outer surfaces, and the plant-based film is coated and covered on both the first inner surfaces and the first outer surfaces.

5. The double-layered bag structure with oil absorption and oil repellency as described in claim 1 or 2, wherein, The inner bag body has two second inner surfaces and two second outer surfaces, and the plant-based film is selectively coated and covered on the second inner surface or the second outer surface.

6. The double-layered bag structure with oil absorption and oil repellency as described in claim 1 or 2, wherein, The inner bag body has two second inner surfaces and two second outer surfaces, and the plant-based film is coated and covered on both the second inner surfaces and the second outer surfaces.

7. The double-layered bag structure with oil absorption and oil repellency as described in claim 1 or 2, wherein, The outer layer of the double-layered bag is made of greaseproof paper, red kraft paper, white kraft paper, single-sided white kraft paper, or white kraft paper.

8. The double-layered bag structure with oil absorption and oil repellency as described in claim 1 or 2, wherein, This plant-based membrane system is a water-based coating made from plant fibers, which are made from natural plant fibers or agricultural by-products.

9. The double-layered bag structure with oil absorption and oil repellency as described in claim 1 or 2, wherein, The plant-based membrane system is a polylactic acid coating, which is made from recycled plants such as corn starch and sugarcane as biological raw materials.

10. The double-layered bag structure with oil absorption and oil repellency as described in claim 1 or 2, wherein, This plant-based membrane system uses a combination of plant fiber water-based coating and polylactic acid coating, and can be selectively applied to the outer and inner layers of the bag.

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