A glove box protective glove that is easy to put on and take off and has no core deviation problem

Abstract

The present invention provides a glove box protective glove that is easy to don and doff and has no eccentricity. The glove box protective glove comprises a finger portion, a palm portion, a wrist portion, and an arm portion, which are connected in sequence and integrally formed by a compression molding process using a glove mold. The finger portion has a conical structure, and each finger is centrally symmetrical. The palm portion has a uniform thickness throughout and is symmetrical front to back. The wrist portion is wider than the maximum width of the palm portion, and the arm portion has a conical structure with a gradually increasing diameter and is centrally symmetrical. The compression molding process includes the following steps: precisely controlling the raw material ratio and the quality of the molding material; providing pressure control and measurement points in the glove mold to ensure uniform force on all parts of the glove; and after the glove mold is closed, controlling the holding time according to the properties of the molding material and ensuring sufficient venting. By symmetrically designing the overall structure of the finger portion, palm portion, and arm portion, and optimizing the manufacturing process, the problem of glove size eccentricity is effectively solved, ensuring uniform size and performance of the glove product.

Description

Technical Field

[0001] The invention relates to the technical field of nuclear radiation protection materials, and in particular to a glove box protective glove that is easy to put on and take off and has no core deviation problem. Background Art

[0002] Glove box protective gloves are protective equipment designed specifically for handling radioactive materials or other hazardous chemicals in specific environments. Their application areas include: (1) Nuclear industry: used in nuclear power plants, nuclear fuel processing, nuclear waste treatment, etc. to protect workers from radiation exposure to radioactive materials. (2) Medical field: used in radiology, nuclear medicine, radiopharmaceutical preparation and other fields to protect medical staff from radiation. (3) Laboratories: used when conducting radioisotope research, radiolabeling experiments, etc. (4) Chemical industry: used for handling and operating hazardous chemicals and radioactive materials. (5) Environmental monitoring: used in the sampling and analysis of radioactive materials. (6) Accident emergency response: used in emergency response to radioactive material leaks or nuclear accidents.

[0003] Application methods include: (1) Direct wear: The operator directly wears the glove box protective gloves to operate. (2) Use with a glove box: Glove box protective gloves are usually used in conjunction with a glove box system. The glove box provides a closed operating environment, and the gloves provide direct contact protection. (3) Multi-layer protection: In high-risk operations, it may be necessary to wear other protective gloves under the glove box protective gloves to provide additional protection.

[0004] The existing design of glove box protective gloves has problems such as inconvenience in donning and doffing, glove eccentricity, discomfort in wearing for a long time, and easy fatigue after wearing. With the development of the protective equipment industry, the market demand for glove box protective gloves is growing, and the performance requirements are getting higher and higher. Although there are some studies that can improve the donning and doffing performance of gloves, there is still a lack of research on the donning and doffing and eccentricity problems of glove box protective gloves, as well as research on improving these defects by designing the intrinsic size of gloves. The existing design of glove box protective gloves often focuses on fitting the hand shape, which brings some problems in the actual donning and doffing process. Especially in special working environments such as the nuclear industry, workers need to wear multiple layers of protective gloves, and the design that fits the hand shape makes donning and doffing very difficult. This design is mainly manifested in: (1) The cuff size is small, which makes it difficult for workers to pass their hands through the cuffs smoothly when wearing multiple layers of gloves. (2) Glove box protective gloves are mostly made of rubber. The rubber material itself has a certain viscosity, which increases the friction when donning and doffing. The gloves may adhere to the skin or the inner glove when donning and doffing, making it difficult to don and doff. On the other hand, the design of the palm part often adopts a special-shaped structure to improve the comfort and flexibility during use. However, during the production process, this design can easily lead to uneven glove size during molding, a phenomenon known as "glove skew." This skew not only affects the glove's appearance and symmetry, but can also compromise its protective performance, ultimately leading to product rejection due to substandard quality. Therefore, improvements are needed to the design of existing glove box protective gloves to improve donning and doffing ease while also reducing skew. Summary of the Invention

[0005] The present invention aims to address the defects of the prior art and provide a glove box protective glove that is easy to put on and take off and has no core deviation problem.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A glove box protective glove that is easy to put on and take off and has no core deviation problem, characterized in that: it includes a finger portion, a palm portion, a wrist portion and an arm portion connected in sequence, and the finger portion, palm portion, wrist portion and arm portion are integrated by a molding method using a glove mold, the finger portion is a tapered structure with a small top and a large bottom, and each finger is a centrally symmetrical structure, the thickness of the palm portion is consistent at all places, and the palm and the back of the palm are symmetrical front to back, the width of the wrist portion is greater than the maximum width of the palm portion, and the arm portion is a tapered structure with a gradually increasing diameter and a centrally symmetrical structure, and the molding method includes the following steps: accurately controlling the raw material ratio and the quality of the molding material; The method comprises the following steps: setting a pressure control and measurement position in the glove mold, setting a measurement position according to the stress distribution law, and uniformly applying pressure to ensure that all parts of the glove are evenly stressed; after the glove mold is closed, controlling the holding time according to the characteristics of the molding material, and ensuring that the exhaust process is sufficient to remove air, moisture and volatiles in the glove mold, fully eliminate internal stress, and reduce the impact of internal stress on the molding process; after the molding is completed, randomly selecting 5 test points on the fingers, palms, and arms, measuring their thickness and calculating the average value; evaluating the dimensional uniformity through the deviation of the thickness of different parts, and evaluating the performance of the gloves through the wearing performance test.

[0008] Furthermore, the finger part includes a thumb, index finger, middle finger, ring finger, and little finger. The lower circumference size range of the thumb is 90-110 mm, the lower circumference size range of the index finger is 85-105 mm, the lower circumference size range of the middle finger is 86-106 mm, the lower circumference size range of the ring finger is 81-101 mm, the lower circumference size range of the little finger is 75-95 mm, and the angle between the thumb and index finger is 10-30°.

[0009] Furthermore, the outer edge of the thumb is provided with an arc to facilitate the inward movement of the thumb.

[0010] Furthermore, the thickness of the palm portion ranges from 30 to 40 mm.

[0011] Furthermore, the circumference of the wrist is in the range of 260-300 mm.

[0012] Furthermore, the inner surfaces of the fingers, palms and wrists are all frosted.

[0013] Furthermore, in the molding method, precise control of the raw material ratio and the quality of the molding material specifically includes the following steps: ensuring the consistency of glove performance by testing the density, thickness, scorch performance, and vulcanization curve of the molding material used in different parts of the glove; and ensuring the shape symmetry and uniform mass distribution of the molding material sheet to ensure the uniformity of the glove.

[0014] Furthermore, the holding time is determined according to the scorch curve and vulcanization curve of the rubber material under different formulation systems.

[0015] Furthermore, the length of the glove mold is (700-800)±5mm, the diameter of the cuff part is (150, 165, 180, 200, 285)±2mm, the thickness of the gloves includes 0.4, 0.6, 0.8, and 1.0mm, and the diameter of the glove curling is 5±0.5mm.

[0016] Furthermore, the wearing performance test includes selecting a tester whose finger size is closest to the glove size. After the hands are multi-protected according to the actual nuclear radiation protection scenario, the time from picking up the homemade gloves to the fingers being fully inserted into the gloves is recorded, accurate to 0.01 second. Each glove is put on three times, and the average time of the three wearing times is calculated as the time the tester wears the gloves.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The wearing time is greatly reduced by reasonably enlarging and designing the finger size, the angle between the thumb and index finger, the palm size, the wrist size, and the arm size.

[0019] 2. By frosting the inner surface of the fingers, palms and arms of the gloves, the stickiness of the rubber gloves is reduced, which reduces the resistance to putting on and taking off the gloves.

[0020] 3. Through the symmetrical design of the overall structure of the fingers, palms and arms, as well as the optimization of the manufacturing process, the problem of glove size deviation is effectively solved, ensuring the uniformity of the size and performance of the glove products. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of the glove box protective gloves of the present invention;

[0022] Among them: 1-fingers, 2-palms, 3-wrists, 4-arms, 11-thumbs, 12-index fingers, 13-middle fingers, 14-ring fingers, 15-little fingers, 41-forearms, 42-upper arms. DETAILED DESCRIPTION

[0023] In order to deepen the understanding of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0024] Figure 1A glove box protective glove is shown, which is easy to put on and take off and has no core deviation problem. It includes a finger portion 1, a palm portion 2, a wrist portion 3, and an arm portion 4, which are connected in sequence. The finger portion 1, palm portion 2, wrist portion 3, and arm portion 4 are integrally formed using a glove mold through a compression molding process. To enhance universality, improve production efficiency, and save production costs, the glove is designed to be non-right-hand specific.

[0025] The finger portion 1 includes the thumb 11, index finger 12, middle finger 13, ring finger 14, and little finger 15. On the one hand, the lower circumference of each finger is appropriately enlarged, and a tapered design is formed with the upper circumference of the fingers to reduce resistance when putting on and taking off while ensuring that the fingers can operate flexibly. The lower circumference size range of the thumb 11 is set to 90-110mm, the lower circumference size range of the index finger 12 is set to 85-105mm, the lower circumference size range of the middle finger 13 is set to 86-106mm, the lower circumference size range of the ring finger 14 is set to 81-101mm, and the lower circumference size range of the little finger 15 is set to 75-95mm. The angle between the thumb 11 and the index finger 12 is set to 10-30°. This angle range is the angle range of the fingers naturally open. A reasonable angle design is conducive to putting on and taking off the gloves; the outer edge of the thumb 11 is reasonably set to an arc to facilitate the inward movement of the thumb 11. On the other hand, the finger portion 1 has a symmetrical structure in front and back and left and right to reduce the occurrence of eccentricity in the finger portion 1.

[0026] The palm portion 2 is designed to have increased width and thickness, particularly around the base of the thumb, to reduce tightness during donning and enhance comfort. Furthermore, the thickness of the palm portion 2 is maintained consistent, with the thickness being consistent across the entire cross-section. Ideally, the thickness should be within a range of 30-40 mm, with the width determined by finger width and finger spacing. Furthermore, the front-to-back symmetry of the palm portion 2 is maintained to minimize offset.

[0027] The width of the wrist portion 3 is not less than the maximum width of the palm portion 2, and the circumference of the wrist portion 3 is 260-300 mm, ensuring that the hand can easily enter and exit.

[0028] The arm portion 4 is designed to increase the cuff diameter and thus the cuff circumference, and to form a tapered design with the wrist portion 3, which will make the arm portion 4 larger as a whole, making it easier to put on and take off the arm 4. The design of the arm portion 4 is symmetrical in front and back, left and right, to reduce the occurrence of arm 4 eccentricity.

[0029] The surfaces of the finger portion 1, palm portion 2 and wrist portion 3 extending from the arm portion 4 to the area of ​​50-200 mm are all frosted to reduce the contact area between the glove and the hand, reduce the influence of rubber viscosity, and further make the glove easier to put on and take off.

[0030] The glove molding molds manufactured according to the above design require regular maintenance and inspection to prevent equipment problems from affecting the dimensional accuracy and uniformity of the gloves.

[0031] In addition to the precise design of the shape and size of the gloves, solving the core eccentricity problem also includes the optimization of the following molding process conditions: (1) Accurately control the raw material ratio and the quality of the molding material: by testing the density, thickness, scorch performance, and vulcanization curve of the molding material used in different parts of the gloves, ensure the consistency of these properties. In addition, it is also necessary to ensure that the shape of the molding material sheet is well symmetrical and the mass distribution is uniform, so as to ensure the uniformity of the finished gloves based on this; (2) During the molding process, increase pressure control and measurement positions, especially in the finger part 1 and the palm part 2, and set the measurement points according to the stress distribution law. , apply pressure evenly to ensure that all parts of the glove are evenly stressed; (3) after the mold is closed, control the holding time according to the characteristics of the molding material. This time is determined according to the scorch curve and vulcanization curve of the rubber material under different formulation systems. This process should ensure that the exhaust process is sufficient to remove the air, moisture and volatiles in the mold, fully eliminate internal stress, and reduce the impact of internal stress on the molding process; (4) improve the design of the heating and cooling channels of the mold. The channel coverage area is as wide as possible, and heat can be quickly transferred to each area to ensure that all parts of the mold are evenly heated, avoid hot or cold spots, and thus avoid uneven curing of the gloves.

[0032] The overall dimensions of the glove mold are: length (700-800) ± 5mm, cuff diameter (150, 165, 180, 200, 285) ± 2mm. Gloves produced using the above method have thicknesses of 0.4, 0.6, 0.8, and 1.0mm, with an error of -0.1mm / +0.2mm; the glove hem diameter is 5 ± 0.5mm.

[0033] After the gloves were molded, five test points were randomly selected on each of the finger section (1), palm section (2), forearm section (41), and forearm section (42). The thickness was measured and the average value was calculated. The deviation in thickness at different locations was used to assess dimensional uniformity. The glove performance was then evaluated through a donning performance test. The donning performance test method involved selecting a subject whose finger size was closest to the glove size. After applying multiple protective measures based on actual nuclear radiation protection scenarios, the time it took for the subject to fully insert the homemade glove was recorded to the nearest 0.01 second. Each glove was donned three times, and the average of these three donning times was calculated as the donning time for the subject.

[0034] Example 1:

[0035] The inside of the finger part 1 and the palm part 2 are all frosted, and the frosted area inside the arm part 4 is 50mm long. Other dimensions are shown in Table 1:

[0036] Table 1: Glove dimensions for Example 1

[0037] Part size Part size Lower thumb circumference 95mm Lower circumference of index finger 90mm Lower circumference of the middle finger 90mm Lower ring finger 85mm Under the little finger 78mm Angle between thumb and index finger 15° Palm thickness 30mm Wrist circumference 260mm Total length of gloves 800mm Cuff diameter 180mm Average thickness of fingers 0.83mm Average thickness of palm 0.82mm Average thickness of forearm 0.80mm Average thickness of upper arm 0.80mm

[0038] The thickness deviation is within 0.05mm, and the average wearing time is 3.65s.

[0039] Example 2:

[0040] The fingers 1 and palm 2 are all frosted, and the frosted area inside the arm 4 is 150mm long. Other dimensions are shown in Table 2:

[0041] Table 2: Glove dimensions for Example 2

[0042] Part size Part size Lower thumb circumference 105mm Lower circumference of index finger 97mm Lower circumference of the middle finger 98mm Lower ring finger 92mm Under the little finger 84mm Angle between thumb and index finger 20° Palm thickness 36mm Wrist circumference 300mm Total length of gloves 800mm Cuff diameter 180mm Average thickness of fingers 0.81mm Average thickness of palm 0.80mm Average thickness of forearm 0.79mm Average thickness of upper arm 0.78mm

[0043] The thickness deviation is within 0.05mm, and the average donning time is 2.74s. The larger size and larger frosted area facilitates donning and doffing.

[0044] Comparative Example:

[0045] The finger part 1, palm part 2, and arm part 4 are not frosted. The molding die adopts the conventional hand shape design, and the size and manufacturing process improvements mentioned above to solve the core deviation problem are not made. Other dimensions are shown in Table 3:

[0046] Table 3: Comparative Glove Dimensions

[0047] Part size Part size Lower thumb circumference 95mm Lower circumference of index finger 90mm Lower circumference of the middle finger 90mm Lower ring finger 85mm Under the little finger 78mm Angle between thumb and index finger 15° Palm thickness 30mm Wrist circumference 260mm Total length of gloves 800mm Cuff diameter 180mm Average thickness of fingers 0.90mm Average thickness of palm 0.92mm Average thickness of forearm 0.80mm Average thickness of upper arm 0.75mm

[0048] The thickness deviation is large, and the average wearing time is 4.88s.

[0049] It can be seen from the above embodiments 1-3 and comparative examples that the wearing time is greatly reduced by reasonably enlarging and designing the size of each finger 1, the angle between the thumb 11 and the index finger 12, the size of the palm 2, the size of the wrist 3, and the size of the arm 4.

[0050] By frosting the inner surfaces of the finger portion 1, the palm portion 2, and the arm portion 4 of the glove, the stickiness of the rubber glove is reduced, thereby reducing the resistance to putting on and taking off the glove.

[0051] Through the symmetrical design of the overall structure of the finger part 1, the palm part 2, and the arm part 4, as well as the optimized design of the preparation process, the problem of glove size deviation is effectively solved, ensuring the uniformity of the size and performance of the glove product.

[0052] The above specific implementation methods are only for illustrating the technical concept and structural features of the present invention, and the purpose is to enable relevant persons familiar with this technology to implement them accordingly. However, the above content does not limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should fall within the scope of protection of the present invention.

Claims

1. A glove box protective glove that is easy to put on and take off and has no core deviation problem, characterized by: The invention comprises a finger portion (1), a palm portion (2), a wrist portion (3) and an arm portion (4) connected in sequence, wherein the finger portion (1), the palm portion (2), the wrist portion (3) and the arm portion (4) are integrally manufactured by a glove mold through a molding method, wherein the finger portion (1) is a tapered structure with a small top and a large bottom, and each finger is a centrally symmetrical structure, the thickness of each part of the palm portion (1) is consistent, and the palm and the back of the palm are symmetrical front to back, the width of the wrist portion (3) is greater than the maximum width of the palm portion (2), and the arm portion (4) is a tapered structure with a gradually increasing diameter and a centrally symmetrical structure, and the molding method comprises the following steps: accurately controlling the raw material ratio and the quality of the molding material; setting a pressure control and measurement position in the glove mold, setting a measurement position according to a stress distribution law, and uniformly applying pressure to ensure that each part of the glove is uniformly stressed; After the glove mold is closed, the holding time is controlled according to the characteristics of the molding material, and the exhaust process is ensured to be sufficient to remove the air, moisture and volatiles in the glove mold, fully eliminate the internal stress, and reduce the impact of the internal stress on the molding process; after the molding is completed, 5 test points are randomly selected on the finger part (1), the palm part (2), and the arm part (4), and their thickness is tested and the average value is calculated. The dimensional uniformity is evaluated by the deviation of the thickness of different parts, and the performance of the gloves is evaluated by the wearing performance test; The finger portion (1) includes a thumb (11), an index finger (12), a middle finger (13), a ring finger (14), and a little finger (15); the lower circumference size range of the thumb (11) is 90-110 mm, the lower circumference size range of the index finger (12) is 85-105 mm, the lower circumference size range of the middle finger (13) is 86-106 mm, the lower circumference size range of the ring finger (14) is 81-101 mm, and the lower circumference size range of the little finger (15) is 75-95 mm; and the angle between the thumb (11) and the index finger (12) is 10-30°; The thickness of the palm portion (2) ranges from 30 to 40 mm.

2. The glove box protective glove that is easy to put on and take off and has no core deviation problem according to claim 1, characterized in that: The outer edge of the thumb (11) is provided with an arc to facilitate the inward movement of the thumb (11).

3. The glove box protective glove that is easy to put on and take off and has no core deviation problem according to claim 1, characterized in that: The circumference of the wrist part (3) ranges from 260 to 300 mm.

4. The glove box protective glove that is easy to put on and take off and has no core deviation problem according to claim 1, characterized in that: The inner surfaces of the finger portion (1), the palm portion (2) and the wrist portion (3) are all frosted.

5. The glove box protective glove that is easy to put on and take off and has no core deviation problem according to claim 1, characterized in that: In the molding method, precise control of the raw material ratio and the quality of the molding material specifically includes the following steps: ensuring the consistency of glove performance by testing the density, thickness, scorch performance, and vulcanization curve of the molding material used in different parts of the glove; and ensuring the shape symmetry and uniform mass distribution of the molding material sheet to ensure the uniformity of the glove.

6. The glove box protective glove that is easy to put on and take off and has no core deviation problem according to claim 1, characterized in that: The holding time is determined according to the scorch curve and vulcanization curve of the rubber material under different formulation systems.

7. The glove box protective glove that is easy to put on and take off and has no core deviation problem according to claim 1, characterized in that: The length of the glove mold is (700-800)±5mm, the diameter of the cuff part is (150, 165, 180, 200, 285)±2mm, the thickness of the gloves includes 0.4, 0.6, 0.8, and 1.0mm, and the diameter of the glove curling is 5±0.5mm.

8. The glove box protective glove that is easy to put on and take off and has no core deviation problem according to claim 1, characterized in that: The wearing performance test includes selecting a tester whose finger size is closest to the glove size. After the hand is multi-protected according to the actual nuclear radiation protection scenario, the time from picking up the homemade glove to the finger being fully inserted into the glove is recorded, accurate to 0.01 second. Each glove is put on three times, and the average time of the three wearing times is calculated as the time the tester wears the glove.

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