Medical heat preservation blanket and preparation process

Abstract

The invention relates to the technical field of heat preservation blankets, in particular to a medical heat preservation blanket and a preparation process. The method comprises the steps that the heat preservation blanket is divided into an outer layer, a middle layer and an inner layer, materials for preparing all the layers of the heat preservation blanket are obtained and pretreated, and the medical performance requirement is met; sequentially preparing an outer layer, a middle layer and an inner layer by adopting a layered independent process, and optimizing structural parameters of each layer; the outer layer, the middle layer and the inner layer are laminated and compounded to obtain a heat preservation blanket, and the heat preservation blanket is subjected to edge sealing treatment; the product performance of the heat preservation blanket is verified, sterilization packaging is carried out, and clinical use safety is ensured; by means of the mode, the situation that the layers of the heat preservation blanket are separated after the heat preservation blanket is repeatedly folded or disinfected can be prevented, the heat preservation performance is stable, and the reliability of long-term use is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal blankets, in particular to a medical thermal blanket and a preparation process. BACKGROUND

[0002] With the continuous progress of surgical medical means, more and more long-time critical operations can be carried out, and the maintenance of body temperature during operation is gradually highlighted. Low body temperature during operation can seriously damage the patient's body, and severe cases can induce heart disease; at the same time, low body temperature can cause drug metabolism time to be prolonged, causing anesthesia recovery delay and other adverse consequences in infants and the elderly. In advanced life support resuscitation, low temperature is needed to reduce body oxygen consumption, so temperature needs to be strictly controlled at different stages. The medical temperature-changing blanket can strictly control the body temperature, and its popularization and use reduce the incidence of adverse reactions after operation, and further develop comfortable medical treatment.

[0003] However, the traditional thermal blanket has a delamination rate of more than 30% between layers after repeated folding or sterilization, resulting in a sharp decrease in thermal performance and insufficient reliability for long-term use. SUMMARY

[0004] The purpose of the present application is to provide a medical thermal blanket and a preparation process, which aims to solve the technical problem that the existing traditional thermal blanket will delaminate between layers after repeated folding or sterilization, resulting in a sharp decrease in thermal performance and insufficient reliability for long-term use.

[0005] To achieve the above-mentioned purpose, a medical thermal blanket preparation process is adopted, which comprises the following steps:

[0006] The thermal blanket is divided into an outer layer, an intermediate layer and an inner layer, the materials for preparing each layer of the thermal blanket are obtained, and pretreatment is performed to meet the medical performance requirements;

[0007] A layered independent process is used to sequentially prepare the outer layer, the intermediate layer and the inner layer, and the structure parameters of each layer are optimized;

[0008] The outer layer, the intermediate layer and the inner layer are laminated and compounded to obtain the thermal blanket, and the thermal blanket is edge-sealed;

[0009] The product performance of the thermal blanket is verified, and sterilization packaging is performed to ensure the safety of clinical use.

[0010] In the step of dividing the thermal blanket into an outer layer, an intermediate layer and an inner layer, obtaining the materials for preparing each layer of the thermal blanket, and performing pretreatment to meet the medical performance requirements:

[0011] The TPU waterproof and breathable film is placed in a plasma treatment machine to enhance the surface hydrophilicity, and a laser drilling device is used to process 0.1mm micropores on the surface of the TPU waterproof and breathable film to balance the air permeability and liquid permeability.

[0012] The aerogel composite fiber and the nano-silver antibacterial fiber are mixed uniformly through a carding machine, and a fiber web is obtained through a needle punching reinforcement process;

[0013] The chitosan modified polyester fiber is loaded with 0.5% silver ion antibacterial agent through a padding process, and is cured at 170 DEG C for 90s.

[0014] Obtain a grade neodymium iron boron magnetic block, and perform nickel plating rust-proof treatment on the surface of the neodymium iron boron magnetic block.

[0015] In the step of adopting a layered independent process to sequentially prepare the outer layer, the intermediate layer and the inner layer, and optimizing the structure parameters of each layer:

[0016] The inner surface of the TPU waterproof and breathable film is coated with a PU coating, the wear resistance is verified by a Martindale test, and a gradient pore size structure is formed by laser punching to obtain an outer layer;

[0017] The fiber web is molded by a molding machine to obtain an intermediate layer;

[0018] The polyester fiber edges are treated by an ultrasonic cutting device to reduce edge burrs, and the fiber surface is activated by low-temperature plasma treatment to impart durable antibacterial properties to obtain an inner layer.

[0019] In the step of laminating and combining the outer layer, the intermediate layer and the inner layer to obtain a thermal blanket, and edge sealing the thermal blanket:

[0020] The outer layer, the hot melt adhesive film, the intermediate layer and the inner layer are stacked in order, the edge alignment error is ≤0.5mm, hot pressing is used with a flat vulcanizing machine, and the composite quality is verified by peel strength test;

[0021] After folding the four edges by 1.5cm, high-frequency welding is performed, air tightness test is performed to prevent liquid penetration, and the welding area is coated with silicone sealant, the thickness of the silicone sealant is controlled at 0.2mm;

[0022] Magnetic blocks are embedded every 20cm at the edge, PA6+30% GF injection is used for fixation, and magnetic poles are arranged alternately.

[0023] In the step of verifying the product performance of the thermal blanket, and sterilizing and packaging to ensure the safety of clinical use:

[0024] According to ISO811 standard, the product is subjected to hydrostatic pressure test to verify the waterproof performance;

[0025] The thermal insulation performance is tested in a-10 DEG C environment to ensure the applicability in low temperature environment;

[0026] The product is sterilized by using ethylene oxide, and is packaged with a double-layer aluminum foil composite bag.

[0027] In the step of balancing the air permeability and the liquid permeation resistance by placing the TPU waterproof and air permeable film in a plasma treatment machine to enhance the surface hydrophilicity and using a laser drilling device to process 0.1mm micropores on the surface of the TPU waterproof and air permeable film:

[0028] The TPU waterproof and air permeable film has a thickness of 0.2-0.3mm, and the TPU waterproof and air permeable film micropore processing is controlled at 50 / cm 2 .

[0029] In the step of using a mold pressing machine to mold the fiber web to obtain the intermediate layer:

[0030] The molding temperature of the mold pressing machine is 120℃, the molding pressure is 5MPa, and the molding time is 120s.

[0031] In the step of stacking the outer layer, the hot melt adhesive film, the intermediate layer and the inner layer in order, the edge alignment error is ≤0.5mm, using a flat vulcanizing machine for hot pressing, and verifying the composite quality by peel strength test:

[0032] In the stacking, the PU coating surface of the outer layer faces inward, and when the flat vulcanizing machine is used, the temperature is controlled at 115℃, the pressure is controlled at 3MPa, and the hot pressing time is 45s.

[0033] The application also provides a medical heat preservation blanket, which comprises a heat preservation blanket, an edge sealing part and a plurality of neodymium-iron-boron magnetic blocks, the edge sealing part is located at the periphery of the heat preservation blanket, and the plurality of neodymium-iron-boron magnetic blocks are fixed to the edge sealing part and uniformly arranged on the edge sealing part.

[0034] The heat preservation blanket comprises an outer layer, an intermediate layer and an inner layer, and the outer layer, the intermediate layer and the inner layer are stacked from top to bottom.

[0035] The medical heat preservation blanket and the preparation process of the application first divide the heat preservation blanket into an outer layer, an intermediate layer and an inner layer, obtain the materials for preparing the layers of the heat preservation blanket, and pretreat the materials to meet the medical performance requirements, then use a layered independent process to sequentially prepare the outer layer, the intermediate layer and the inner layer, optimize the structure parameters of the layers, laminate and composite the outer layer, the intermediate layer and the inner layer to obtain the heat preservation blanket, and perform edge sealing treatment on the heat preservation blanket to realize glue-free composite through flat vulcanizing machine hot pressing, solve the delamination problem caused by the thermal expansion difference of traditional adhesive, finally verify the product performance of the heat preservation blanket, and perform sterilization packaging to ensure the safety of clinical use, through the above-mentioned manner, the delamination between the layers of the heat preservation blanket after repeated folding or disinfection is prevented, the heat preservation performance is stable, and the long-term use reliability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0037] Figure 1 is a step flow chart of the medical warming blanket preparation process of the present application.

[0038] Figure 2 is a step flow chart of S100 of the present application.

[0039] Figure 3 is a step flow chart of S200 of the present application.

[0040] Figure 4 is a step flow chart of S300 of the present application.

[0041] Figure 5 is a step flow chart of S400 of the present application.

[0042] Figure 6 is a structural schematic diagram of the medical warming blanket preparation of the present application.

[0043] Figure 7 is an internal structure sectional view of the warming blanket of the present application.

[0044] 500-warming blanket, 600-sealing edge, 700-neodymium-iron-boron magnetic block, 501-outer layer, 502-middle layer, 503-inner layer. DETAILED DESCRIPTION

[0045] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The following description is only exemplary and is not intended to limit the present application. The same reference numerals in different drawings represent the same or similar elements unless otherwise indicated.

[0046] The terms used in the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the present application and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0047] It should be understood that, although the terms first, second, third, etc. can be employed in this application to describe various information, the information should not be limited to these terms. These terms are only used to distinguish one type of information from another type of information. For example, without departing from the scope of the present application, first information can also be referred to as second information, and similarly, second information can also be referred to as first information. Depending on the context, the word "if" as used herein can be interpreted as "when" or "upon" or "in response to determining".

[0048] Referring to Figures 1-5 The present application provides a medical warming blanket preparation process, comprising the following steps:

[0049] S100: Divide the warming blanket 500 into an outer layer 501, an intermediate layer 502, and an inner layer 503, obtain the materials for preparing each layer of the warming blanket 500, and pretreat to meet the medical performance requirements.

[0050] In this embodiment, the warming blanket 500 is divided into an outer layer 501, an intermediate layer 502, and an inner layer 503, the materials for preparing each layer of the warming blanket 500 are obtained, and pretreated to meet the medical performance requirements. The specific process is as follows:

[0051] S101: Place the TPU waterproof and breathable film in a plasma treatment machine to enhance the surface hydrophilicity, and use a laser punching device to process 0.1mm micropores on the surface of the TPU waterproof and breathable film to balance the air permeability and liquid permeation resistance;

[0052] S102: Mix the aerogel composite fiber and the nano-silver antibacterial fiber uniformly through a carding machine, and obtain a fiber web through a needle punching reinforcement process;

[0053] S103: Use chitosan modified polyester fiber, load 0.5% silver ion antibacterial agent through a padding process, and cure at 170°C for 90s;

[0054] S104: Obtain a grade neodymium iron boron magnetic block 700, and perform nickel plating rust-proof treatment on the surface of the neodymium iron boron magnetic block 700.

[0055] In the above process, first, the TPU waterproof and breathable film (thickness 0.2-0.3mm) is placed in a plasma treatment machine to enhance the surface hydrophilicity, and a laser drilling equipment is used to process 0.1mm micropores on the surface of the TPU waterproof and breathable film, to balance the air permeability and liquid permeability, wherein the TPU waterproof and breathable film micropore processing is controlled at 50 / cm2, then the aerogel composite fiber and nano-silver antibacterial fiber are mixed uniformly by a carding machine, and a needle punching reinforcement process is used to obtain a fiber web, a chitosan modified polyester fiber is used to load 0.5% silver ion antibacterial agent by a padding process, and is cured at 170°C for 90s to give a durable antibacterial property, and a grade neodymium iron boron magnetic block 700 is obtained, and a nickel plating anti-rust treatment is performed on the surface of the neodymium iron boron magnetic block 700, and the anti-rust treatment provides a repeatable adsorption fixing function.

[0056] S200: A layered independent process is used to sequentially prepare the outer layer 501, the middle layer 502 and the inner layer 503, and the structure parameters of each layer are optimized.

[0057] In this embodiment, a layered independent process is used to sequentially prepare the outer layer 501, the middle layer 502 and the inner layer 503, and the structure parameters of each layer are optimized, and the specific process is as follows:

[0058] S201: The inner surface of the TPU waterproof and breathable film is coated with a PU coating, the wear resistance is verified by a Martindale test, and a gradient pore size structure is formed by laser drilling to obtain the outer layer 501;

[0059] S202: The fiber web is molded by a molding machine to obtain the middle layer 502;

[0060] S203: The polyester fiber edge is treated by an ultrasonic cutting device to reduce edge burrs, and the fiber surface is activated by low-temperature plasma treatment to give a durable antibacterial property to obtain the inner layer 503.

[0061] In the above process, first, the inner surface of the TPU waterproof and breathable film is coated with a PU coating (dry glue amount 20g / m 2 ), the wear resistance is verified by a Martindale test to prolong the service life, and a gradient pore size structure is formed by laser drilling (surface pore size 0.1mm, bottom pore size 0.05mm) to optimize the balance of air permeability and liquid resistance, to obtain the outer layer 501, then the fiber web is molded by a molding machine (molding temperature 120°C, molding pressure 5MPa, molding time 120s) to obtain the middle layer 502, and then the polyester fiber edge is treated by an ultrasonic cutting device to reduce edge burrs, and the fiber surface is activated by low-temperature plasma treatment to give a durable antibacterial property to obtain the inner layer 503.

[0062] S300: Laminating the outer layer 501, the middle layer 502, and the inner layer 503 to obtain the thermal blanket 500, and performing edge sealing 600 treatment on the thermal blanket 500.

[0063] In the embodiment, the outer layer 501, the middle layer 502, and the inner layer 503 are laminated to obtain the thermal blanket 500, and the edge sealing 600 treatment is performed on the thermal blanket 500, and the specific process is as follows:

[0064] S301: The outer layer 501, the hot melt adhesive film, the middle layer 502, and the inner layer 503 are sequentially stacked with an edge alignment error ≤0.5 mm, hot-pressed using a flat vulcanizing machine, and the composite quality is verified by peel strength test;

[0065] S302: High-frequency welding is performed after folding the four edges by 1.5 cm, air tightness test is performed to prevent liquid penetration, and the welding area is coated with silicone sealant with a thickness of 0.2 mm;

[0066] S303: Magnetic blocks are embedded every 20 cm on the edge, PA6+30% GF injection is used for fixation, and the magnetic poles are arranged alternately.

[0067] In the above process, the outer layer 501 (PU coating facing inward), the hot melt adhesive film, the middle layer 502, and the inner layer 503 are sequentially stacked with an edge alignment error ≤0.5 mm to ensure the composite precision, hot-pressed using a flat vulcanizing machine (temperature control at 115°C, pressure control at 3MPa, and hot-pressing time for 45s), and the composite quality is verified by peel strength test, then high-frequency welding is performed after folding the four edges by 1.5 cm, air tightness test is performed to prevent liquid penetration, and the welding area is coated with silicone sealant (thickness 0.2mm), and then magnetic blocks are embedded every 20 cm on the edge, PA6+30% GF injection is used for fixation, and the magnetic poles are arranged alternately (N-S-N-S), which can simplify the wrapping operation and achieve quick storage. In the above process, through the interlaminar composite of the hot melt adhesive film and the mold pressing process, through the accurate control of the temperature 115°C, the pressure 3MPa, and the time 45s parameters, the formation of the microstructure of the heterogeneous material interface is realized, the peel strength is improved to ≥15N / 25mm, and the antibacterial coating integrity (bacteriostatic rate ≥99%) is ensured, which fundamentally solves the life and safety problems caused by delamination between the layers of the thermal blanket 500.

[0068] S400: Verify the product performance of the thermal blanket 500, and perform sterilization packaging to ensure the safety of clinical use.

[0069] In the embodiment, the product performance of the thermal blanket 500 is verified, and sterilization packaging is performed to ensure the safety of clinical use, and the specific process is as follows:

[0070] S401: hydrostatic pressure test is performed on the product according to ISO811 standard to verify waterproof performance;

[0071] S402: insulation performance is tested in-10℃ environment to ensure low temperature environment applicability;

[0072] S403: the product is sterilized by using ethylene oxide and packaged by using double-layer aluminum foil composite bag.

[0073] In the above process, hydrostatic pressure test is performed on the product according to ISO811 standard to verify waterproof performance, insulation performance is tested in-10℃ environment to ensure low temperature environment applicability, and finally the product is sterilized by using ethylene oxide and packaged by using double-layer aluminum foil composite bag.

[0074] Please refer to Figure 6 and Figure 7 The application further provides a medical insulation blanket 500, comprising an insulation blanket 500, an edge 600 and a plurality of neodymium iron boron magnetic blocks 700, the edge 600 is located at the four sides of the insulation blanket 500, and the plurality of neodymium iron boron magnetic blocks 700 are fixed with the edge 600 and uniformly arranged on the edge 600.

[0075] In the embodiment, the edge 600 is fixed at the four sides of the insulation blanket 500, and then the neodymium iron boron magnetic blocks 700 are embedded every 20 cm at the outer edge of the edge 600, and PA6+30%GF injection is used for fixation, and the magnetic poles are alternately arranged (N-S-N-S), which can simplify the wrapping operation and realize quick storage.

[0076] Further, the insulation blanket 500 comprises an outer layer 501, an intermediate layer 502 and an inner layer 503, and the outer layer 501, the intermediate layer 502 and the inner layer 503 are stacked from top to bottom.

[0077] In the embodiment, the outer layer 501, the intermediate layer 502 and the inner layer 503 are laminated and compounded to obtain the insulation blanket 500, and then the edge 600 is fixed at the four sides of the insulation blanket 500.

[0078] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the application be limited only by the scope of the claims, including any amendments thereof, and other equivalents to the claims. It is intended that the application not be limited to the examples described herein, but that it include all examples falling within the scope of the application.

[0079] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings and that various modifications and changes can be effected therein by those skilled in the art without departing from the scope of the application.

Claims

1. A process for the preparation of a medical thermal blanket, characterized in that, The method comprises the following steps: The thermal blanket is divided into an outer layer, an intermediate layer and an inner layer, materials for preparing the layers of the thermal blanket are obtained, and pretreatment is performed to meet the medical performance requirements; An independent process is adopted to sequentially prepare the outer layer, the intermediate layer and the inner layer, and the structure parameters of the layers are optimized; The outer layer, the intermediate layer and the inner layer are laminated and compounded to obtain the thermal blanket, and edge sealing treatment is performed on the thermal blanket; The product performance of the thermal blanket is verified, and sterilization packaging is performed to ensure the safety of clinical use.

2. The medical blanket manufacturing process of claim 1, wherein, In the step of dividing the thermal blanket into an outer layer, an intermediate layer and an inner layer, obtaining materials for preparing the layers of the thermal blanket, and performing pretreatment to meet the medical performance requirements: The TPU waterproof and breathable film is placed in a plasma treatment machine to enhance the surface hydrophilicity, and a laser drilling device is used to process 0.1mm micropores on the surface of the TPU waterproof and breathable film to balance the air permeability and liquid permeation resistance; The aerogel composite fiber and the nano-silver antibacterial fiber are uniformly mixed through a carding machine, and a needle punching reinforcement process is adopted to obtain a fiber web; The chitosan modified polyester fiber is loaded with 0.5% silver ion antibacterial agent through a padding process, and is cured at 170°C for 90s. A grade neodymium iron boron magnetic block is obtained, and a nickel plating anti-rust treatment is performed on the surface of the neodymium iron boron magnetic block.

3. The medical blanket manufacturing process of claim 1, wherein, In the step of adopting an independent process to sequentially prepare the outer layer, the intermediate layer and the inner layer, and optimizing the structure parameters of the layers: The inner surface of the TPU waterproof and breathable film is coated with a PU coating, a Martindale test is used to verify the wear resistance, and a laser drilling is used to form a gradient pore size structure to obtain the outer layer; The fiber web is formed by a mold pressing machine to obtain the intermediate layer; The edge of the polyester fiber is treated by an ultrasonic cutting device to reduce the edge burrs, and a low-temperature plasma treatment is used to activate the surface of the fiber to give it long-lasting antibacterial properties to obtain the inner layer.

4. The medical blanket manufacturing process of claim 1, wherein, In the step of laminating and compounding the outer layer, the intermediate layer and the inner layer to obtain the thermal blanket, and performing edge sealing treatment on the thermal blanket: The outer layer, the hot melt adhesive film, the intermediate layer and the inner layer are sequentially stacked with an edge alignment error of ≤0.5mm, a flat vulcanizing machine is used for hot pressing, and a peeling strength test is used to verify the compounding quality; High-frequency welding is performed after folding the four edges by 1.5cm, air tightness testing is performed to prevent liquid penetration, and a silicone sealant is coated on the welded area with a thickness of 0.2mm; Magnetic blocks are embedded every 20cm on the edge, PA6+30%GF injection is used for fixation, and the magnetic poles are arranged alternately.

5. The medical blanket manufacturing process of claim 1, wherein, In the step of verifying the product performance of the thermal blanket, performing sterilization packaging and ensuring the safety of clinical use: The product is subjected to hydrostatic pressure test according to ISO811 standard to verify the waterproof performance; The thermal insulation performance is tested in a-10℃ environment to ensure the applicability in low temperature environment; The product is sterilized by using ethylene oxide, and is packaged by using a double-layer aluminum foil composite bag.

6. The medical blanket manufacturing process of claim 2, wherein, In the step of placing the TPU waterproof and breathable film in a plasma treatment machine to enhance the surface hydrophilicity, and using a laser drilling device to process 0.1mm micropores on the surface of the TPU waterproof and breathable film to balance the air permeability and liquid permeation resistance: The TPU waterproof and breathable film has a thickness of 0.2-0.3 mm, and the TPU waterproof and breathable film micropore processing is controlled at 50 per cm 2 .

7. The medical blanket manufacturing process of claim 3, wherein, In the step of forming the intermediate layer by using a mold pressing machine: The molding temperature of the compression molding machine was 120℃, the molding pressure was 5MPa and the molding time was 120s.

8. The medical blanket manufacturing process of claim 4, wherein, In the step of stacking in order of outer layer, hot melt adhesive film, middle layer and inner layer, edge alignment error ≤0.5mm, using a flat vulcanizing machine for hot pressing, and verifying the composite quality by peel strength test: In the stacking, the PU coating surface of the outer layer faces inward, and when the flat vulcanizing machine is used, the temperature is controlled at 115℃, the pressure is controlled at 3MPa, and the hot pressing time is 45s.

9. A medical blanket prepared by the medical blanket preparation process according to claim 1, characterized by, The heat preservation blanket comprises a heat preservation blanket, an edge sealing part and a plurality of Nd-Fe-B magnetic blocks, the edge sealing part is located at the periphery of the heat preservation blanket, the plurality of Nd-Fe-B magnetic blocks are fixed with the edge sealing part and are uniformly arranged on the edge sealing part.

10. The medical heat blanket of claim 9, wherein, The heat preservation blanket comprises an outer layer, a middle layer and an inner layer, and the outer layer, the middle layer and the inner layer are stacked from top to bottom.

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