Degradable pit toilet bag

Abstract

The utility model relates to a degradable pit latrine bag which comprises a bag body, the bag body is composed of a composite film of a multi-layer structure, and the composite film sequentially comprises a degradable layer, a binder layer and a water repellent layer from outside to inside. The degradable layer is a plant fiber film, the binder layer is polyvinyl alcohol or polylactic acid, and the water repellent layer is composed of a water repellent. The plant fiber film is used as a framework material, and the binder layer and the water-repellent layer are sequentially arranged on the surface of the plant fiber film, so that the latrine bag has the advantages of being biodegradable, high in mechanical property and good in sealing property.

Description

Technical Field

[0001] The utility model relates to the technical field of dry toilet bags, and more specifically, to a degradable dry toilet bag. Background Art

[0002] In rural dry toilets, trains, high-speed rails, and mobile public toilets used in areas with large passenger flows such as tourist attractions, in order to meet the requirements of odor prevention, water conservation, cleanliness, and hygiene for public toilets / dry toilets, dry toilet bags are generally equipped in mobile public toilets / dry toilets to hold excrement. Dry toilet bags have the characteristics of good sealing performance and high strength. They can not only ensure 100% recycling of excrement, making mobile public toilets / dry toilets meet the hygiene requirements, but also cause no pollution to the surrounding farmland or environment. Moreover, a large amount of water can be saved during the use process, and it is also convenient and hygienic.

[0003] Traditional dry toilet bags made of polyethylene are non-degradable and not conducive to treatment. Currently, the degradable dry toilet bags on the market have disadvantages such as poor mechanical strength and easy leakage.

[0004] Plant fiber is the most abundant natural polymer material in nature, with biodegradability and renewable properties. It is an ideal green and environmentally friendly material. Compared with many inorganic and synthetic fibers, plant fiber has the advantages of wide raw material sources, low price, complete degradability, low processing energy consumption, and no pollution to the environment. Summary of the Utility Model

[0005] Based on the above technical problems existing in the prior art, the utility model provides a degradable dry toilet bag. By using a plant fiber film as the skeleton material and sequentially providing an adhesive layer and a water-repellent layer on the surface, the dry toilet bag can have the advantages of biodegradability, strong mechanical properties, and good sealing performance.

[0006] In order to achieve the above object, the technical solution of the utility model is as follows:

[0007] A degradable dry toilet bag includes a bag body, and the bag body is composed of a composite film with a multi-layer structure. The composite film sequentially includes a degradable layer, an adhesive layer, and a water-repellent layer from the outside to the inside; the degradable layer is a plant fiber film, the adhesive layer is polyvinyl alcohol or polylactic acid, and the water-repellent layer is composed of a water repellent.

[0008] In some embodiments, the plant fiber film is obtained by weaving plant fibers vertically and horizontally.

[0009] In some embodiments, since hemp fiber has excellent properties such as ecological environmental protection and anti-mildew and bactericidal properties, the plant fiber is preferably hemp fiber; more preferably, since ramie fiber has a longer single fiber length and greater strength compared to other hemp fibers, ramie fiber is preferably used.

[0010] In some embodiments, the thickness of the degradable layer is 0.1 - 0.15 mm.

[0011] In some embodiments, the thickness of the adhesive layer is 0.05 - 0.1 mm.

[0012] In some embodiments, the thickness of the water-repellent layer is 0.03 - 0.05 mm.

[0013] In some embodiments, the degradable layer and the adhesive layer are bonded by hot pressing, and the water-repellent layer is coated on the surface of the adhesive layer.

[0014] In some embodiments, two opposite handles are provided on both sides of the bag body port.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The degradable dry toilet bag provided by the present utility model has a bag body composed of a composite film with a multi-layer structure. The composite film sequentially includes a degradable layer, an adhesive layer, and a water-repellent layer from the outside to the inside. Among them, the degradable layer is a plant fiber film, which serves as the skeleton structure of the bag body, is biodegradable, and has strong mechanical properties. The surface of the plant fiber film is provided with an adhesive layer, which can effectively isolate the direct contact between excrement and the plant fiber film and prevent it from penetrating to the outside of the bag body. The surface of the adhesive layer is further provided with a water-repellent layer to isolate the possible direct contact between water and the adhesive layer and avoid the dissolution of the adhesive layer when it encounters water.

[0017] Through the setting of the composite film structure of the bag body of the present utility model, the bag body has good sealing performance, and has the advantages of being biodegradable and having strong mechanical properties. Description of the Drawings

[0018] Figure 1 It is a structural diagram of the composite film composition of the present utility model;

[0019] Figure 2 It is a microstructural diagram of the use of the dry toilet bag and the plant fiber film;

[0020] Among them, 10 - bag body, 11 - plant fiber film layer, 12 - adhesive layer, 13 - water-repellent layer, 14 - handle. Detailed Embodiments

[0021] Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model.

[0024] As Figure 1 shown, a degradable dry toilet bag includes a bag body 10, and the bag body 10 is composed of a composite film with a multi-layer structure. The composite film sequentially includes a degradable layer 11, an adhesive layer 12, and a water-repellent layer 13 from the outside to the inside; specifically, in this embodiment, the degradable layer 11 is a plant fiber film, the adhesive layer is polyvinyl alcohol or polylactic acid, and the water-repellent layer is composed of a water repellent.

[0025] The present utility model uses a plant fiber film as the skeleton material, and sequentially sets an adhesive layer and a water-repellent layer on the surface of the plant fiber film, so that the dry toilet bag is not only biodegradable, but also has the advantages of strong mechanical properties and good sealing performance. When in use, as Figure 2 shown, the dry toilet bag is arranged in the toilet device in a mobile public toilet or a dry toilet, and the bag mouth is upward.

[0026] Specifically, in this embodiment, the thickness of the degradable layer 11 is 0.1 mm, the thickness of the adhesive layer is 0.05 mm, and the thickness of the water-repellent layer is 0.03 mm.

[0027] More specifically, the degradable layer 11 and the adhesive layer 12 are bonded by hot pressing, and the water-repellent layer 13 is formed by spraying a water repellent FK-526S on the surface of the adhesive layer 12 and drying and condensing; as a further improvement, the water repellent can also be sprayed on the other surface of the degradable layer 11 at the same time.

[0028] More specifically, based on the excellent properties of ramie fibers, such as long single fiber length and high strength, in this embodiment, the plant fiber film is obtained by weaving ramie fibers vertically and horizontally, and its microscopic structure is as Figure 2 shown.

[0029] Furthermore, in order to facilitate the treatment and sealing of the bag mouth after use, two opposite handles 14 are provided on both sides of the port of the bag body 10.

[0030] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0031] The above-described embodiments only represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A degradable dry toilet bag, comprising a bag body, characterized in that: The bag body is composed of a multi-layer composite film, which includes a degradable layer, an adhesive layer and a water-repellent layer from the outside to the inside; the degradable layer is a plant fiber film, the adhesive layer is polyvinyl alcohol or polylactic acid, and the water-repellent layer is composed of a water-repellent.

2. The degradable dry toilet bag according to claim 1, characterized in that: The plant fiber film is obtained by crisscrossing and weaving plant fibers.

3. The degradable dry toilet bag according to claim 2, characterized in that: The plant fiber is hemp fiber.

4. The degradable dry toilet bag according to claim 1, characterized in that: The thickness of the degradable layer is 0.1-0.15 mm.

5. The degradable dry toilet bag according to claim 1, characterized in that: The thickness of the adhesive layer is 0.05-0.1 mm.

6. The degradable dry toilet bag according to claim 1, characterized in that: The thickness of the water-repellent layer is 0.03-0.05 mm.

7. The degradable dry toilet bag according to claim 1, characterized in that: The degradable layer and the adhesive layer are bonded by heat pressing, and the water-repellent layer is coated on the surface of the adhesive layer.

8. The degradable dry toilet bag according to any one of claims 1 to 7, characterized in that: Two opposite handles are arranged on both sides of the bag body port.

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