Chemical protective clothing with acid and alkali resistant function
By using polypropylene spunbond nonwoven fabric, rubber layer, wax adhesive layer and support strip in the protective clothing, combined with sealing connection and ventilation structure, the problem of air pressure imbalance caused by poor breathability of protective clothing is solved, achieving efficient filtration and sealing, and improving the safety and comfort of the wearer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN SAIQI PROTECTIVE PROD CO LTD
- Filing Date
- 2024-12-27
- Publication Date
- 2026-05-19
AI Technical Summary
Existing protective suits, when used for extended periods, suffer from poor breathability, leading to an imbalance of internal and external air pressure. This increases the risk of wearers inhaling harmful substances, and when directly impacted at the face mask, the acidic or alkaline airflow increases the potential threat, while also causing discomfort to the wearer.
The design incorporates polypropylene spunbond nonwoven fabric, a rubber layer, a waxed adhesive layer, support strips, a sealing connection structure, and a ventilation structure, including a circular rubber ring, a stretch elastic strip, a universal adhesive strip, a set of filter bags, a shielding cloth, a filter screen, and a replaceable inner bag. This enables gas diversion and multi-layer filtration, ensuring both sealing performance and filtration efficiency.
It effectively resists acid and alkali corrosion, provides comprehensive safety protection, ensures smooth gas exchange, enhances comfort and protection, prevents acid and alkali liquid leakage, and keeps the breathing air fresh and safe.
Smart Images

Figure CN224250770U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of protective clothing technology, specifically a chemical protective clothing with acid and alkali resistance. Background Technology
[0002] Protective clothing comes in a wide variety of types, including fire-fighting protective clothing, industrial protective clothing, medical protective clothing, military protective clothing, and protective clothing designed for special populations. These protective suits play a vital role in numerous industries and fields, such as firefighting, military, shipbuilding, petroleum, chemical, painting, cleaning and disinfection, and laboratories. Among these, acid and alkali chemical protective clothing, as a special type of protective clothing, primarily serves to effectively block potential harm from acid and alkali chemicals to the wearer.
[0003] However, despite their high degree of airtightness, current protective suits, even with prolonged use, experience subtle changes in their internal space due to human movement, creating a pressure difference between the inside and outside. Traditional protective suits, due to their poor breathability, often rely solely on face masks for gas exchange driven by this pressure difference. Unfortunately, when external airflow containing acidic or alkaline components directly impacts the face mask, it significantly increases the wearer's chances of inhaling harmful substances, posing a potential threat to their respiratory system. Furthermore, the inability to achieve timely pressure balance between the inside and outside of the protective suit causes considerable discomfort to the wearer. Therefore, this case study was developed to address these issues in depth. Utility Model Content
[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a chemical protective suit with acid and alkali resistance, comprising: a protective suit body, a sealing connection structure, and a pair of ventilation structures, wherein the sealing connection structure and the pair of ventilation structures are installed on the protective suit body, and the protective suit body comprises: polypropylene spunbond nonwoven fabric, a rubber layer, an acid and alkali resistant layer, a wax adhesive layer, and several support strips.
[0005] The rubber layer is installed on the inner side of the polypropylene spunbond nonwoven fabric through the wax adhesive layer, the acid and alkali resistant layer is installed on the rubber layer through the wax adhesive layer, and a plurality of the support strips are evenly inserted into the inner side of the acid and alkali resistant layer.
[0006] Preferably, the sealing connection structure includes: a plurality of circular rubber rings, a plurality of elastic strips, and a plurality of universal adhesive strips;
[0007] Several circular rubber rings are evenly installed on the inner side of the protective suit body, several elastic strips are evenly inserted into the inner side of the protective suit body, and several universal adhesive strips are respectively installed on several elastic strips and the protective suit body.
[0008] Preferably, the ventilation structure includes: a set of filter bags, a replacement pull slide, several shielding cloths, a filter screen, and several replacement inner bags;
[0009] The set of filter bags is disposed on the protective suit body, the replacement pull-out is installed on the set of filter bags, several of the shielding fabrics are evenly installed in an S-shape on the inside of the set of filter bags, the protective suit body has filter holes, the filter screen is installed on the inside of the set of filter bags, and several replacement inner bags are evenly installed on the inside of the set of filter bags.
[0010] Preferably, the protective suit body is provided with a number of external universal adhesive strips.
[0011] Preferably, each of the plurality of external universal adhesive strips is provided with a replaceable protective patch on its outer side.
[0012] Preferably, several of the replaceable protective patches are fitted above the zipper on the protective suit body.
[0013] Beneficial effects
[0014] This invention provides a chemical protective suit with acid and alkali resistance. It offers the following advantages: The suit uses polypropylene spunbond nonwoven fabric as its base material. Its stable chemical properties effectively resist insect infestation, bacteria, and pest damage. It also possesses excellent resistance to acid and alkali corrosion, high temperatures, and ultraviolet radiation, providing the wearer with a robust first line of defense. A waxy adhesive layer tightly bonds the polypropylene spunbond nonwoven fabric to a rubber layer, ensuring a strong bond and excellent sealing performance, effectively preventing the penetration of harmful substances and protecting the wearer's safety. The rubber layer adds flexibility, making the suit more comfortable and form-fitting. Furthermore, specially designed support strips are evenly distributed across the suit body, providing stable support and enhancing its three-dimensional appearance, ensuring a comfortable fit. Maintaining a good shape throughout the process greatly enhances the wearer's comfort; the specially designed acid and alkali resistant layer effectively blocks splashes of acid and alkali liquids, preventing leaks and providing comprehensive safety protection for the wearer; in addition, the combination of elastic bands, universal adhesive strips, and circular rubber rings allows for flexible adjustment and sealing of the inner diameter of the protective suit, further enhancing the protective effect; as the user moves, the gas inside the protective suit flows naturally, being guided through the holes in the filter bags; the shielding fabric, arranged in an S-shape, guides the gas to meander, extending the residence time of the gas in the filtration system and enhancing filtration efficiency; multiple replaceable inner bags contain high-efficiency filtration equipment for precise filtration of harmful gases such as acids and alkalis, while the filter effectively intercepts solid contaminants, ensuring a pure and safe internal environment for the protective suit. Attached Figure Description
[0015] Figure 1 This is a side cross-sectional view of a chemical protective suit with acid and alkali resistance according to the present invention.
[0016] Figure 2 for Figure 1 A magnified view of the letter "A" in the image.
[0017] Figure 3 This is a partial cross-sectional view of the chemical protective suit with acid and alkali resistance described in this utility model.
[0018] In the diagram: 1. Protective suit body; 2. Polypropylene spunbond nonwoven fabric; 3. Rubber layer; 4. Acid and alkali resistant layer; 5. Wax adhesive layer; 6. Support strip; 7. Circular rubber ring; 8. Stretch elastic strip; 9. Universal adhesive strip; 10. Set of filter bags; 11. Masking cloth; 12. Filter screen; 13. Replacement inner bag. Detailed Implementation
[0019] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0020] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further.
[0021] Example
[0022] like Figure 1-3 As shown, the sealing connection structure and a pair of ventilation structures are installed on the protective suit body 1. The protective suit body 1 includes: polypropylene spunbond nonwoven fabric 2, rubber layer 3, acid and alkali resistant layer 4, wax adhesive layer 5, and several support strips 6.
[0023] Specifically, the rubber layer 3 is installed on the inner side of the polypropylene spunbond nonwoven fabric 2 through the wax adhesive layer 5, the acid and alkali resistant layer 4 is installed on the rubber layer 3 through the wax adhesive layer 5, and a plurality of the support strips 6 are evenly inserted into the inner side of the acid and alkali resistant layer 4.
[0024] It should be noted that, as mentioned above, the polypropylene spunbond nonwoven fabric 2 exhibits excellent resistance to insects and moths due to its stable chemical properties, and can effectively isolate bacteria and pests in liquids. It also possesses excellent chemical resistance, including resistance to acid and alkali corrosion, high temperatures, and ultraviolet radiation. We cleverly use a waxy adhesive layer 5 to tightly bond the polypropylene spunbond nonwoven fabric 2 with the rubber layer 3, achieving not only a strong bond between the two but also ensuring excellent sealing performance. The addition of the rubber layer 3 gives the protective suit body 1 good flexibility, making it more comfortable and form-fitting to wear. We have also specially designed several support strips 6, which are evenly distributed on the protective suit body 1, providing stable support for the protective suit. These support strips 6 not only enhance the three-dimensionality of the protective suit but also allow it to maintain a good shape during wear, improving the wearer's comfort.
[0025] Finally, we have specially designed an acid and alkali resistant layer 4, which can effectively block splashed acid and alkali liquids and prevent leakage. This acid and alkali resistant layer 4 not only enhances the protective performance of the protective clothing, but also provides the wearer with comprehensive safety protection.
[0026] like Figure 1-3 As shown, the sealing connection structure includes: several circular rubber rings 7, several tension strips 8, and several universal adhesive strips 9;
[0027] Specifically, several circular rubber rings 7 are evenly installed on the inner side of the protective suit body 1, several elastic strips 8 are evenly inserted into the inner side of the protective suit body 1, and several universal adhesive strips 9 are respectively installed on several elastic strips 8 and the protective suit body 1.
[0028] It should be noted that, in the above process, the inner diameter of the inner side of the protective suit body 1 is changed by stretching the elastic strip 8 on the inner side of the protective suit body 1, the position of the elastic strip 8 is limited and fixed by the universal adhesive strip 9, and the area around the stretched elastic strip 8 is sealed by the circular rubber ring 7.
[0029] like Figure 1-3 As shown, the ventilation structure includes: a set of filter bags 10, a replacement pull slide, several shielding cloths 11, a filter screen 12, and several replacement inner bags 13.
[0030] Specifically, the set of filter bags 10 is disposed on the protective suit body 1, the replacement pull slide is installed on the set of filter bags 10, a number of the shielding cloths 11 are evenly installed in an S-shape on the inner side of the set of filter bags 10, the protective suit body 1 has filter holes, the filter screen 12 is installed on the inner side of the set of filter bags 10, and a number of replacement inner bags 13 are evenly installed on the inner side of the set of filter bags 10;
[0031] It should be noted that, in the ingenious design of the protective suit body 1, the internal air flow is naturally driven by the user's flexible movement. This system cleverly utilizes the carefully designed perforations on the filter bag 10 as a channel for gas flow, ensuring that the gas inside the protective suit can be smoothly discharged. To further enhance the filtration effect, we have specially designed several shielding fabrics 11, which guide the gas in an S-shaped meandering motion with a unique arrangement. This S-shaped gas flow path not only prolongs the residence time of the gas in the filtration system but also greatly enhances the filtration efficiency, allowing various impurities in the gas to be captured and removed more fully. In the core filtration stage, we have equipped multiple replaceable inner bags, which contain high-efficiency filtration devices specifically designed for the precise filtration of harmful gases such as acids and alkalis in the air. At the same time, to deal with potential solid contaminants, we have also specially added a filter screen 12, which can effectively intercept and filter out solid particles in the air, ensuring the purity and safety of the environment inside the protective suit. In summary, this protective suit, through its unique gas flow design, S-shaped filtration path, and multiple filtration mechanisms, provides users with comprehensive and multi-layered protection, ensuring that they can maintain fresh and safe breathing air in various complex environments.
[0032] As a preferred option, the protective suit body 1 is further provided with a number of external universal adhesive strips 9.
[0033] As a preferred option, furthermore, each of the external universal adhesive strips 9 is provided with a replaceable protective patch on its outer side.
[0034] As a preferred option, furthermore, several of the replaceable protective patches are fitted above the zipper on the protective suit body 1.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A chemical protective suit with acid and alkali resistance, comprising: The protective suit body, the sealing connection structure, and the pair of ventilation structures are installed on the protective suit body. The protective suit body comprises: polypropylene spunbond nonwoven fabric, a rubber layer, an acid and alkali resistant layer, a wax adhesive layer, and several support strips. The rubber layer is installed on the inner side of the polypropylene spunbond nonwoven fabric through the wax adhesive layer, the acid and alkali resistant layer is installed on the rubber layer through the wax adhesive layer, and a plurality of the support strips are evenly inserted into the inner side of the acid and alkali resistant layer.
2. The chemical protective clothing with acid and alkali resistance according to claim 1, characterized in that, The sealing connection structure includes: several circular rubber rings, several elastic strips, and several universal adhesive strips; Several circular rubber rings are evenly installed on the inner side of the protective suit body, several elastic strips are evenly inserted into the inner side of the protective suit body, and several universal adhesive strips are respectively installed on several elastic strips and the protective suit body.
3. The chemical protective suit with acid and alkali resistance according to claim 2, characterized in that, The ventilation structure includes: a set of filter bags, a replacement pull slide, several shielding cloths, a filter screen, and several replacement inner bags; The set of filter bags is disposed on the protective suit body, the replacement pull-out is installed on the set of filter bags, several of the shielding fabrics are evenly installed in an S-shape on the inside of the set of filter bags, the protective suit body has filter holes, the filter screen is installed on the inside of the set of filter bags, and several replacement inner bags are evenly installed on the inside of the set of filter bags.
4. The chemical protective suit with acid and alkali resistance according to claim 3, characterized in that, The protective suit has several external universal adhesive strips.
5. The chemical protective suit with acid and alkali resistance according to claim 4, characterized in that, Replaceable protective patches are provided on the outer side of several of the aforementioned universal adhesive strips.
6. The chemical protective suit with acid and alkali resistance according to claim 5, characterized in that, Several of the replaceable protective patches are fitted above the zipper on the protective suit body.