Canvas bag with waterproof function
By clamping the PTFE film layer in the fabric of the canvas bag, the waterproof performance is improved by using its microporous structure, the problem of poor waterproof performance of the existing canvas bag is solved, and the effect is not easy to penetrate when it rains, and through the cutting-proof fabric and The counterweight structure enhances the durability and portability of the bag.
Patent Information
- Application Number
- CN202420610678.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-27
AI Technical Summary
The existing canvas bags are made of burlap and have more voids, resulting in poor waterproofing performance. When it rains, rainwater can easily penetrate into the bag.
The fabric structure is adopted that includes a first cotton and linen fabric layer, a second cotton and linen fabric layer and a PTFE film layer. The PTFE film layer is sandwiched between the two layers, and its microporous structure is used to improve waterproof performance and prevent rainwater from penetration.
The waterproof performance of the canvas bag is significantly improved, and rainwater does not penetrate into the bag easily, ensuring that the items in the bag are dry, while enhancing the durability and portability of the bag through cut-resistant fabrics and counterweight structures.
Smart Images

Figure CN222194345U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of textiles, in particular to a canvas bag with a waterproof function. Background Art
[0002] Canvas bags are made of burlap, and their biggest feature is that they are strong and durable. They are also popular with many people because they can be matched with any clothing, or you can DIY them yourself. There are many types and styles.
[0003] The canvas bag in the prior art is made of burlap and thus has many gaps, so the waterproof performance is relatively poor. On rainy days, rainwater easily penetrates into the canvas bag and wets the items in the bag. Utility Model Content
[0004] In order to solve the above-mentioned deficiencies in the prior art, the utility model provides a canvas bag with a waterproof function.
[0005] In order to achieve the above technical effects, the utility model adopts the following scheme:
[0006] A canvas bag with waterproof function comprises a bag body and handles arranged on both sides of the bag body, the upper end of the bag body is provided with a bag opening, the two sides of the bag opening are connected by a first snap button structure, the bag body comprises a front panel located at the front side, a rear panel located at the rear side and a bag bottom located at the bottom, the upper end of the rear panel is extended to be provided with a bag cover bent to the front of the front panel, the bag cover and the front panel are connected by a second snap button structure, the fabrics used for the front panel, the rear panel and the bag cover all comprise a first cotton and linen fabric layer, a second cotton and linen fabric layer and a PTFE film layer, the first cotton and linen fabric layer is located on the outside, the second cotton and linen fabric layer is located on the inside, and the PTFE film layer is sandwiched between the first cotton and linen fabric layer and the second cotton and linen fabric layer.
[0007] According to a preferred technical solution, the fabric used for the bag bottom includes a third cotton and linen fabric layer and a cut-resistant fabric, and the cut-resistant fabric is located on the inner side of the third cotton and linen fabric layer.
[0008] According to a preferred technical solution, a rear outer pocket is provided on the surface of the back panel, a zipper is provided at the opening of the rear outer pocket, a shielding layer extending downward is connected to the surface of the back panel, a connection position between the shielding layer and the back panel is higher than the position of the zipper, and the shielding layer blocks the zipper.
[0009] According to a preferred technical solution, a counterweight structure is provided at the lower edge of the shielding layer, and the counterweight structure comprises a counterweight sleeve arranged along the lower edge of the shielding layer, and the counterweight sleeve is filled with counterweight sand.
[0010] According to a preferred technical solution, the handle comprises a cotton core located inside and a fabric layer covering the surface of the cotton core.
[0011] Compared with the prior art, the beneficial effects are:
[0012] The utility model has a simple structure and is easy to use. The front panel, the back panel and the bag cover all include a first cotton and linen fabric layer, a PTFE film layer and a second cotton and linen fabric layer. The PTFE film layer improves the waterproof performance of the front panel, the back panel and the bag cover. After being caught in the rain, rainwater is not easy to penetrate into the canvas bag. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a front view schematic diagram of the utility model;
[0014] Figure 2 It is a side view schematic diagram of the utility model;
[0015] Figure 3 yes Figure 2 The enlarged structural diagram of part A in the middle;
[0016] Figure 4 This is a schematic diagram of the fabric layer structure used in the front panel of the utility model;
[0017] Figure 5 It is a schematic diagram of the fabric layer structure used for the bottom of the middle bag of the utility model.
[0018] Figure numerals: 1. bag body; 2. handle; 3. front panel; 4. bag bottom; 5. bag cover; 6. back panel; 7. back outer belt; 8. shielding layer; 9. zipper; 10. weight sleeve; 11. first cotton and linen fabric layer; 12. PTFE membrane layer; 13. second cotton and linen fabric layer; 14. third cotton and linen fabric layer; 15. cut-resistant fabric. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0020] A canvas bag with waterproof function comprises a bag body 1 and handles 2 arranged on both sides of the bag body 1, the upper end of the bag body 1 is provided with a bag opening, the two sides of the bag opening are connected by a first snap button structure, the bag body 1 comprises a front panel 3 located at the front side, a back panel 6 located at the back side and a bag bottom 4 located at the bottom, the upper end of the back panel 6 is extended to be provided with a bag cover 5 bent to the front of the front panel 3, the bag cover 5 and the front panel 3 are connected by a second snap button structure, the fabrics used for the front panel 3, the back panel 6 and the bag cover 5 all comprise a first cotton and linen fabric layer, a second cotton and linen fabric layer and a PTFE film layer 12, the first cotton and linen fabric layer is located on the outside, the second cotton and linen fabric layer is located on the inside, the PTFE film layer 12 is sandwiched between the first cotton and linen fabric layer and the second cotton and linen fabric layer, and the PTFE film utilizes the pore-forming characteristics of polytetrafluoroethylene plastic resin and is a microporous film made by a biaxial stretching method. The membrane surface has more than one billion micropores per square centimeter. The diameter of each micropore (0.1μm-0.5μm) is hundreds of times smaller than the diameter of a water molecule (20μm-100μm) and tens of thousands of times larger than a water vapor molecule (0.0003μm-0.0004μm), allowing water vapor to pass through but water droplets to prevent them from passing. This microporous structure can achieve excellent waterproof and moisture-permeable functions.
[0021] The bag opening can be covered by the bag cover 5, and the front panel 3, the back panel 6 and the bag cover 5 all include a first cotton and linen fabric layer, a PTFE film layer 12 and a second cotton and linen fabric layer. The PTFE film layer 12 improves the waterproof performance of the front panel 3, the back panel 6 and the bag cover 5, and rainwater is not easy to penetrate into the canvas bag after being rained on. The bag bottom 4 is not provided with a waterproof structure, so that the liquid placed in the canvas bag can flow out from the bag bottom 4 after leaking, and will not accumulate in the canvas bag.
[0022] According to a preferred technical solution, the fabric used for the bag bottom 4 includes a third cotton and linen fabric layer and a cut-resistant fabric 15, and the cut-resistant fabric is located on the inner side of the third cotton and linen fabric layer.
[0023] By providing the anti-cut fabric 15 on the inner side, it is prevented that when sharp objects are placed in the canvas bag, the bag bottom 4 is scratched, thereby preventing the objects in the canvas bag from falling out.
[0024] A preferred technical solution is that a rear outer pocket is provided on the surface of the back panel 6, a zipper 9 is provided at the opening of the rear outer pocket, a shielding layer 8 extending downward is connected to the surface of the back panel 6, a connection position between the shielding layer 8 and the back panel 6 is higher than the position of the zipper 9, and the shielding layer 8 blocks the zipper 9.
[0025] According to common practice, when a canvas bag is carried in hand or over one's shoulder, its back side is close to the body, and a rear outer pocket is provided on the rear panel 6 to place small items such as mobile phones and cards, which are convenient for taking and putting at any time. Moreover, since it is close to the body, safety is improved, and the shielding layer 8 blocks the zipper 9 to prevent rainwater from seeping into the rear outer pocket from the zipper 9.
[0026] According to a preferred technical solution, a counterweight structure is provided at the lower edge of the shielding layer 8, and the counterweight structure comprises a counterweight sleeve 10 provided along the lower edge of the shielding layer 8, and the counterweight sleeve 10 is filled with counterweight sand.
[0027] The counterweight structure allows the shielding layer 8 to always be vertically downward to shield the zipper 9 .
[0028] According to a preferred technical solution, the handle 2 includes a cotton core located inside and a fabric layer covering the surface of the cotton core.
[0029] The strength of the handle 2 is improved by the cotton core.
[0030] In the description of the present utility model, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present utility model.
[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0032] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.
Claims
1. A waterproof canvas bag, characterized in that: The invention comprises a bag body (1) and handles (2) arranged on both sides of the bag body (1); the upper end of the bag body (1) is provided with a bag opening, and the two sides of the bag opening are connected by a first snap button structure; the bag body (1) comprises a front panel (3) located at the front side, a rear panel (6) located at the rear side, and a bag bottom (4) located at the bottom; the upper end of the rear panel (6) is provided with a bag cover (5) bent to the front of the front panel (3); the bag cover (5) is connected to the front panel (3) by a second snap button structure; the fabrics used for the front panel (3), the rear panel (6) and the bag cover (5) all comprise a first cotton and linen fabric layer, a second cotton and linen fabric layer, and a PTFE film layer (12); the first cotton and linen fabric layer is located on the outer side, the second cotton and linen fabric layer is located on the inner side, and the PTFE film layer (12) is sandwiched between the first cotton and linen fabric layer and the second cotton and linen fabric layer.
2. A waterproof canvas bag as claimed in claim 1, characterized in that: The fabric used for the bag bottom (4) comprises a third cotton and linen fabric layer and a cut-resistant fabric (15), wherein the cut-resistant fabric is located on the inner side of the third cotton and linen fabric layer.
3. A waterproof canvas bag as claimed in claim 1, characterized in that: The surface of the rear panel (6) is provided with a rear outer pocket, and a zipper (9) is provided at the opening of the rear outer pocket. The surface of the rear panel (6) is connected to a shielding layer (8) extending downward, and the connection position between the shielding layer (8) and the rear panel (6) is higher than the position of the zipper (9), and the shielding layer (8) blocks the zipper (9).
4. A waterproof canvas bag as claimed in claim 3, characterized in that: A counterweight structure is provided at the lower edge of the shielding layer (8), and the counterweight structure comprises a counterweight sleeve (10) arranged along the lower edge of the shielding layer (8), and the counterweight sleeve (10) is filled with counterweight sand.
5. A waterproof canvas bag as claimed in claim 1, characterized in that: The handle (2) comprises a cotton core located inside and a fabric layer covering the surface of the cotton core.
Citation Information
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