Paper packaging for receiving food

Abstract

Paper packaging for containing food, characterized in that the paper packaging comprises: a tubular body (1) formed by winding a biodegradable paper-based material, an interior space (2) of the tubular body (1) being configured to contain food; a membrane coating (3) applied to inner surfaces of both ends of the tubular body (1) and made of an environmentally friendly polymer material that becomes sticky after heating; and a heat-sealed end (4) formed by melting and bonding the membrane coatings (3) at both ends together under heating and pressure and without adhesive, thereby creating a seal.

Description

TECHNICAL FIELD

[0001] The present utility model relates to the field of food packaging, in particular to paper packaging for containing food. STATE OF THE ART

[0002] As a traditional and widely used packaging material, paper packaging offers many advantages, including low cost, ease of processing, and recyclability. Paper packaging plays an important role in the field of food packaging. Paper packaging can not only effectively protect food from external contamination and damage, but also provide necessary labeling, information, and instructions for consumers.

[0003] State-of-the-art food packaging is bulky, making it difficult to carry and use. Furthermore, current regulations abroad prohibit the use of plastic straws. Traditional food packaging cannot meet the demand for environmentally friendly materials in foreign markets. At the same time, traditional paper straws have the disadvantage of being inseparable.

[0004] Therefore, it is necessary to provide paper packaging for containing food to solve the above problems. CONTENT OF THE PRESENT UTILITY MODEL

[0005] In view of the deficiencies in the prior art, the purpose of the embodiments of the present utility model is to provide a paper packaging for containing food which aims to solve the technical problem identified in the prior art.

[0006] To achieve the above-mentioned objectives, the present utility model offers the following technical solutions: A paper package for containing food comprises: a tubular body formed by winding a biodegradable paper-based material, an interior of the tubular body being formed for containing food; a membrane coating applied to the inner surfaces of each end of the tubular body and made of an environmentally friendly polymer material that becomes sticky after heating; and a heat-sealed end formed by melting and bonding the membrane coatings at both ends together under heat and pressure and without adhesive, thereby creating a seal.

[0007] In a further embodiment of the present utility model, the material of the membrane coating is selected from polylactic acid (PLA), polyethylene (PE) and starch-based composite materials.

[0008] In another embodiment of the present invention, a heating temperature of the heat-sealed end is 140-180 °C, and a pressure application time is 0.5-3 seconds, thereby producing a seamless linear seal.

[0009] In a further embodiment of the present utility model, a ratio of a diameter to a length of the tubular body is 1:5 to 1:20, which ratio is suitable for packaging rod-shaped candies, nuts or granular foods.

[0010] In a further embodiment of the present utility model, a food-grade desiccant layer is arranged on an inner side of the heat-sealed end, which desiccant layer is fixed to the membrane coating material by heat sealing.

[0011] In a further embodiment of the present utility model, a waterproof coating, which is a water-based acrylic resin or silicone materials, is coated on an outer surface of the tubular body.

[0012] In summary, the embodiments of the present utility model have the following advantageous effects compared to the prior art: A biodegradable paper-based material and an environmentally friendly membrane coating (such as PLA and starch-based materials) are used, eliminating the use of conventional plastic packaging and chemical adhesives. This is in line with the green packaging trend and reduces the risk of environmental pollution. The membrane coating material used is food-grade to ensure safety in direct contact with food.

[0013] By heating under pressure, the adhesiveness of the membrane coating is directly activated at both ends to achieve a seal, eliminating the traditional adhesive coating process. Therefore, the production process is simplified, and equipment and raw material costs are reduced, significantly improving packaging efficiency.

[0014] The heat-sealed end forms a seamless linear seal, avoiding problems such as air leakage or seepage caused by uneven adhesive, ensuring high sealing reliability. Optional waterproof coating and a built-in food-grade desiccant layer are available, further extending shelf life. This meets the storage requirements of various foods such as candy and nuts.

[0015] The diameter-to-length ratio of the tubular body is suitable for rod-shaped or granular foods. This ratio facilitates portability and dispensing in a specific dosage, resulting in strong market applicability and widespread use.

[0016] In order to clarify the structural features and effectiveness of the present utility model, a detailed explanation of the present utility model is given below in conjunction with the attached drawings and concrete embodiments. SHORT DESCRIPTION OF THE DRAWING

[0017] The technical solutions of this utility model are explained in more detail below with reference to the attached drawings and exemplary embodiments. The drawings include: Fig. 1 is a schematic diagram of a structure of an embodiment of the present utility model. Fig. 2 is a schematic sectional view of an internal structure of an embodiment of the utility model.

[0018] Reference symbols: 1. tubular body; 2. interior; 3. membrane coating; 4. heat-sealed end. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the present utility model clearer and more understandable, further detailed explanations of the present utility model are provided below in conjunction with the accompanying drawings and exemplary embodiments. It should be understood that the specific exemplary embodiments described herein are used only to explain the present utility model and are not intended to limit the present utility model.

[0020] In the following, the concrete implementations of the present utility model are described in detail in connection with concrete embodiments.

[0021] On Fig. 1-2 is referred to. Paper packaging for foodstuffs includes: a tubular body 1 formed by winding a biodegradable paper-based material, an interior space 2 of the tubular body 1 being formed for receiving food; a membrane coating 3 applied to inner surfaces of both ends of the tubular body 1 and made of an environmentally friendly polymer material that becomes sticky after heating; and a heat-sealed end 4 formed by melting and bonding the membrane coatings 3 at both ends together under heating and pressure and without adhesive, thereby creating a seal.

[0022] Furthermore, the material of the membrane coating 3 is selected from polylactic acid (PLA), polyethylene (PE) and starch-based composites.

[0023] Furthermore, a heating temperature of the heat-sealed end 4 is 140-180 °C, and a pressure application time is 0.5-3 seconds, thus producing a seamless linear seal.

[0024] Furthermore, a ratio of a diameter to a length of the tubular body 1 is 1:5 to 1:20, which ratio is suitable for packaging rod-shaped candies, nuts or granular foods.

[0025] Furthermore, a food-grade desiccant layer is arranged in advance on an inner side of the heat-sealed end 4, which is fixed to the membrane coating material by heat sealing.

[0026] Furthermore, a waterproof coating, which is a water-based acrylic resin or silicone materials, is coated on an outer surface of the tubular body 1.

[0027] The tubular body 1 preferably uses a biodegradable paper-based material and an environmentally friendly membrane coating (such as PLA and starch-based materials), thus avoiding the use of conventional plastic packaging and chemical adhesives. This is in line with the trend of green packaging and reduces the risk of environmental pollution. The membrane coating material used is food-grade to ensure safety in direct contact with food.

[0028] In addition, by heating under pressure, the adhesiveness of the membrane coating 3 is directly activated at both ends to achieve sealing, eliminating the traditional adhesive coating process. Therefore, the production process is simplified, and equipment and raw material costs are reduced, greatly improving packaging efficiency.

[0029] The heat-sealed end 4 also forms a seamless linear seal, avoiding problems such as air leakage or seepage caused by uneven adhesive, thus ensuring high sealing reliability. Optional waterproof coating and a built-in food-grade desiccant layer are available, further extending shelf life. This meets the storage requirements of various foods such as candy and nuts.

[0030] It should be noted that the ratio of the diameter to the length of the tubular body 1 is suitable for rod-shaped or granular foods. This ratio is conducive to carrying and dispensing in a specific dosage, thus achieving strong market applicability and extensive use.

[0031] It should be noted that all components in this application are universal standard parts or parts familiar to those skilled in the art that effectively solve the technical problems posed in the prior art.

[0032] The above description represents only preferred embodiments of the present utility model and is not intended to limit the present utility model. Modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the scope of protection of the present utility model.

Claims

[1] Paper packaging for food, characterized by that the paper packaging includes: a tubular body (1) formed by winding a biodegradable paper-based material, an interior space (2) of the tubular body (1) being designed to accommodate food; a membrane coating (3) applied to the inner surfaces of both ends of the tubular body (1) and made of an environmentally friendly polymer material which becomes sticky after heating; and a heat-sealed end (4) formed by melting and bonding the membrane coatings (3) at both ends together under heating and pressure and without adhesive, thereby creating a seal. [2] Paper packaging for containing food according to claim 1, characterized bythat the material of the membrane coating (3) is selected from polylactic acid (PLA), polyethylene (PE) and starch-based composite materials. [3] Paper packaging for containing food according to claim 1, characterized by that a heating temperature of the heat-sealed end (4) is 140-180 °C, and that a pressure application time is 0.5-3 seconds, whereby a seamless linear seal is produced. [4] Paper packaging for containing food according to claim 1, characterized by that a ratio of a diameter to a length of the tubular body (1) is 1:5 to 1:20, which ratio is suitable for packaging rod-shaped sweets, nuts or granular foods. [5] Paper packaging for containing food according to claim 1, characterized bythat a food-grade desiccant layer is arranged in advance on an inner side of the heat-sealed end (4), which is fixed to the membrane coating material by heat sealing. [6] Paper packaging for containing food according to claim 1, characterized by that a waterproof coating, which is a water-based acrylic resin or silicone materials, is coated on an outer surface of the tubular body (1).

Images