Full-process protective clothing and processing method thereof

Abstract

The full-process protective clothing comprises an upper garment used for being connected with a main body, trousers sewn below the upper garment, a cap sewn at the upper end of the upper garment and shoe covers sewn at the lower ends of the trousers, and is characterized by further comprising auxiliary materials used for being sewn with the upper garment, the trousers and the cap in a matched mode, and the auxiliary materials comprise a breathing mask sewn at the front end of the cap and a breathing mask sewn at the rear end of the cap. The head hoop is adhered to the upper end of the interior of the hat, and the two one-way ventilation valves are fixedly sewn to the rear knee fossa of the trousers. The protective clothing has the advantages that the one-way air valves are arranged at the back and the knee fossa of the protective clothing and are hermetically spliced with the protective clothing fabric, the protective clothing is extruded through joint movement to generate pressure difference, air flow is promoted, the integrated protective clothing is designed, and then the wearing and taking-off steps are optimized; meanwhile, the composite fabric adopted by the protective clothing has the comprehensive performance of good air and moisture permeability, static resistance, water seepage resistance, surface moisture resistance, synthetic blood penetration resistance, filtering efficiency, breaking strength and ultraviolet protection, and better protection can be achieved.

Description

Technical Field

[0001] This invention relates to the field of wastewater sampling protection technology, specifically to full-process protective clothing and its processing method. Background Technology

[0002] Research reports from multiple countries have indicated the presence of the novel coronavirus (SARS-CoV-2 virus) in sewage, and the risk of SARS-CoV-2 virus spreading to humans via waterways should not be ignored.

[0003] During the on-site collection, disinfection, and transportation of wastewater samples, operators inevitably come into contact with wastewater samples and containers. At the same time, the aerosol generated during the sampling process is generated when water samples are drawn. Most of the ordinary protective clothing in the current technology is worn in separate pieces, which is cumbersome to put on and take off, and the joints cannot fit completely. It does not have strong waterproof, corrosion resistance, or crack resistance. When wastewater seeps in, the COVID-19 virus in the wastewater can cause infection through inhalation or contact. Summary of the Invention

[0004] The technical problem to be solved by this invention is to overcome the above-mentioned technical defects and provide a complete protective suit and its processing method.

[0005] To solve the above problems, the technical solution of the present invention is: a full-process protective suit, including an upper garment for main body connection, trousers sewn below the upper garment, a hat sewn to the upper part of the upper garment, and shoe covers sewn to the lower part of the trousers, and also including: auxiliary materials for sewing together with the upper garment, trousers and hat, wherein the auxiliary materials include: the breathing mask sewn to the front end of the hat, and the headband attached to the upper part of the inside of the hat; One-way ventilation valves, two of which are respectively fixedly sewn onto the back of the pants behind the knees, at the back of the shirt. Each one-way ventilation valve includes: The valve body shell has several vent holes on its front end face and bottom. A filter element is placed inside the valve body housing, and the upper end of the filter element is hinged to the inner side of the valve body housing.

[0006] Furthermore, the entire process of processing protective clothing includes the following steps: S1. High antistatic nonwoven fabric, breathable membrane and hot melt adhesive are pressed together by a laminating machine to make a composite fabric. S2. Cut the composite fabric to the appropriate size for the part. S3. Inspect the cut pieces and remove any defective pieces. S4. Collect the auxiliary materials from the warehouse according to the number of cut pieces, and then start sewing the qualified cut pieces; S5. After sewing, use a hot air blower to heat seal the seams with adhesive, and treat the seams with sealing strips. S6. The processed protective clothing is then inspected. S7. Finally, it enters a large ethylene oxide sterilizer for sterilization and analysis. After passing inspection, it is then transferred to the finished product warehouse.

[0007] Furthermore, the specific steps of S1 are as follows: using high antistatic nonwoven fabric + breathable membrane + hot melt adhesive, stretching and flattening, antistatic composite membrane, produced by composite machine and hot melt adhesive machine. The fabric includes a layer of fabric with appropriate density and structure, which can be breathable and moisture-permeable, and can shield liquids such as water, blood, and body fluids. This layer of fabric is made by appropriate functional finishing process with appropriate liquid repellent finishing agent.

[0008] Furthermore, the specific steps of S2 are as follows: materials are retrieved from the purified raw material warehouse, removed from the outer packaging room, impurities are filtered out through the air shower system, and after being sterilized by ultraviolet light through the transfer window, they enter the 100,000-level clean production workshop, are transferred to the cutting department, and are separated according to the reverse side of the fabric, with the film side as the front side. The materials are arranged according to the production order quantity, and when pulling the fabric, the fabric is pulled in one order with the front side facing up, the fabric edges are neat and vertical, and the fabric surface is flat without wrinkles. Then, it is cut by a CNC automatic cutting machine. The garment pieces cut by the automatic cutting machine are more accurate and standard, with an error within 0.01mm. The cut pieces are separated according to specifications and placed on different shelf carts, and the goods identification cards are attached.

[0009] Furthermore, the specific steps of S3 are: check the front and back of the cut piece, and whether there is any major damage to the quality of the cut piece.

[0010] Furthermore, the specific steps of S4 are as follows: The first process is four-line sewing. First, fold the trouser pieces right sides together and align the edges. Place them on the presser foot of the machine, lift the presser foot and step down the pedal. Place the front crotch, back crotch, and bottom crotch of the trouser pieces on the presser foot of the machine, lift the presser foot and step down the pedal to sew them together. Lay the garment piece flat on the work surface, align the underarm seams, fold it inwards with the right sides facing in, place it on the presser foot of the machine, lift the presser foot and step down the pedal to sew it. Place the shrink cotton on top, then the meltblown fabric on the bottom, and lay it flat on the machine presser foot. Secure it with a 0.1mm visible seam sewing machine, following the circle of the cut piece. After securing, place it at the cut edge of the garment piece and secure the garment piece and shrink cotton together with a computer-controlled sewing machine. Lay the top flat on the table with the right sides facing up and sew it together with the right sides of the bottom fabric. Use a flat sewing machine to sew the extended zipper on the front placket. The hat is sewn together with the collar of the garment piece by computer-controlled flat sewing with the inside out, ensuring that the hat and body piece are fully connected together. The foot covers are sewn together with the trouser pieces using a four-thread overlock sewing machine, and then heat-sealed with adhesive.

[0011] Further, the specific steps for S5 are as follows: Use a hot air machine to heat-seal all seams. First, confirm the parameters of the heat-sealing machine: temperature 210-230 degrees Celsius, speed 14-16 meters per minute. If the temperature is 220-240 degrees Celsius, the speed should be 12-14 meters per minute. If the fabric has good temperature resistance and the operator is skilled, the operating temperature can be appropriately increased to ensure that the adhesive is fully softened and completely adheres to the fabric without any flaws. After the machine is properly adjusted, test it with the fabric first, and then the laboratory technician will conduct a hydrostatic pressure test. After passing the test, the garment will be heat-sealed.

[0012] Furthermore, the specific steps of S6 are as follows: the shift inspection personnel conduct an appearance inspection, and there must be no problems such as burrs, damage, weak adhesion, open stitches, or skipped stitches. Inspection records are made for qualified and unqualified products. Qualified products are transferred to packaging, and unqualified products are rectified. Technical personnel are responsible for quality control. Defective products must not be transferred to the next process. After the product inspection is qualified, it is folded.

[0013] Furthermore, the specific steps for S7 are as follows: The product enters a large ethylene oxide sterilizer for sterilization. The sterilization process includes: preheating, vacuuming, humidification and chemical injection, sterilization, ventilation to remove residual gases, and an effective sterilization time of 480 minutes. After 14 days of analysis in the analysis room, samples are taken by inspection personnel for full-performance testing. Once the test is passed, an inspection report is issued, and the product is transferred to the finished product warehouse.

[0014] The advantages of this invention compared to existing technologies are: This invention features one-way air valves at the back and knee area of ​​the protective suit, which are sealed to the fabric. Pressure differentials are generated by joint movement, promoting gas flow. This integrates various individual protective components into a single, one-piece protective suit, combining the face shield and gloves into a single unit, thus optimizing the donning and doffing process. Furthermore, the composite fabric used in the protective suit offers excellent breathability and moisture permeability, antistatic properties, water resistance, surface moisture resistance, resistance to synthetic blood penetration, filtration efficiency, tensile strength, and UV protection, providing superior protection. Attached Figure Description

[0015] Figure 1 This is the front view of the present invention.

[0016] Figure 2 This is a rear view of the present invention.

[0017] Figure 3 This is a three-dimensional schematic diagram of the one-way vent valve of the present invention. Figure 1 .

[0018] Figure 4 This is a three-dimensional schematic diagram of the one-way vent valve of the present invention. Figure 2 .

[0019] As shown in the figure: 1. Top; 2. Pants; 3. Hat; 4. Shoe covers; 5. Breathing mask; 6. Headband; 7. One-way ventilation valve; 701. Valve body; 702. Vent hole; 703. Filter plate. Detailed Implementation

[0020] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0021] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0022] To make the content of this invention easier to understand, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0023] like Figures 1 to 4 As shown, the technical solution of the present invention is: a full-process protective suit, including an upper garment 1 for main body connection, trousers 2 sewn below the upper garment 1, a hood 3 sewn to the upper part of the upper garment 1, and shoe covers 4 sewn to the lower part of the trousers 2. It also includes: auxiliary materials for sewing together with the upper garment 1, trousers 2, and hood 3. The auxiliary materials include: a breathing mask 5 sewn to the front end of the hood 3, the breathing mask 5 being used for both blocking and breathing; and a headband 6 adhered to the upper part of the inside of the hood 3, fixing the hood 3 to the user. The headband 6 is attached to the wearer's head and is easy to replace using an adhesive method. Both one-way ventilation valves 7 are fixedly sewn to the back of the pants 2 at the knee. Each one-way ventilation valve 7 includes a valve body shell 701 with several ventilation holes 702 on the front and bottom sides. A filter 703 is placed inside the valve body shell 701, with the upper end of the filter 703 hinged to the inside of the valve body shell 701. The pressure difference generated by the joint movement compressing the protective clothing promotes gas flow. The filter 703 is used for gas filtration.

[0024] The entire process of processing protective clothing includes the following steps: S1. High antistatic nonwoven fabric, breathable membrane and hot melt adhesive are pressed together by a laminating machine to make a composite fabric. S2. Cut the composite fabric to the appropriate size for the part. S3. Inspect the cut pieces and remove any defective pieces. S4. Collect the auxiliary materials from the warehouse according to the number of cut pieces, and then start sewing the qualified cut pieces; S5. After sewing, use a hot air blower to heat seal the seams with adhesive, and treat the seams with sealing strips. S6. The processed protective clothing is then inspected. S7. Finally, it enters a large ethylene oxide sterilizer for sterilization and analysis. After passing inspection, it is then transferred to the finished product warehouse.

[0025] The specific steps of S1 are as follows: using high antistatic nonwoven fabric + breathable membrane + hot melt adhesive, stretching and flattening, antistatic composite membrane, produced by laminating machine and hot melt adhesive machine. The fabric includes a layer of fabric with appropriate density and structure, which can be breathable and moisture-permeable, and can shield liquids such as water, blood and body fluids. This layer of fabric is made by appropriate functional finishing process with appropriate liquid repellent finishing agent.

[0026] The specific steps of S2 are as follows: materials are retrieved from the clean raw material warehouse, removed from the outer packaging in the unpacking room, impurities are filtered out through the air shower system, and after being sterilized by ultraviolet light through the pass-through window, they enter the 100,000-level clean production workshop, are transferred to the cutting department, and are separated according to the reverse side of the fabric, with the film side as the front side. The materials are arranged according to the production order quantity, and when pulling the fabric, the fabric is pulled in one order with the front side facing up, the fabric edges are neat and vertical, and the fabric surface is flat without wrinkles. Then, it is cut by a CNC automatic cutting machine. The garment pieces cut by the automatic cutting machine are more accurate and standard, with an error within 0.01mm. The cut pieces are separated according to specifications and placed on different shelf carts, and the goods identification cards are attached.

[0027] The specific steps for S3 are: check the front and back of the cut piece, and whether there is any major damage to the quality of the cut piece.

[0028] The specific steps of S4 are as follows: The first process is four-line sewing. First, fold the trouser pieces right sides together and align the edges. Place them on the presser foot of the machine and lift the presser foot and step down the pedal. Place the front crotch, back crotch, and lower crotch of the trouser pieces on the presser foot of the machine and lift the presser foot and step down the pedal to sew them together. Lay the garment piece flat on the work surface, align the underarm seams, fold it inwards with the right sides facing in, place it on the presser foot of the machine, lift the presser foot and step down the pedal to sew it. Place the shrink cotton on top, then the meltblown fabric on the bottom, and lay it flat on the machine presser foot. Secure it with a 0.1mm visible seam sewing machine, following the circle of the cut piece. After securing, place it at the cut edge of the garment piece and secure the garment piece and shrink cotton together with a computer-controlled sewing machine. Lay the top flat on the table with the right sides facing up and sew it together with the right sides of the bottom fabric. Use a flat sewing machine to sew the extended zipper on the front placket. The hat is sewn together with the collar of the garment piece by computer-controlled flat sewing with the inside out, ensuring that the hat and body piece are fully connected together. The foot covers are sewn together with the trouser pieces using a four-thread overlock sewing machine, and then heat-sealed with adhesive.

[0029] The specific steps for S5 are as follows: Use a hot air machine to heat-seal all seams. First, confirm the parameters of the heat-sealing machine: temperature 210-230 degrees Celsius, speed 14-16 meters per minute. If the temperature is 220-240 degrees Celsius, the speed should be 12-14 meters per minute. If the fabric has good temperature resistance and the operator is skilled, the operating temperature can be appropriately increased to ensure the adhesive is fully softened and completely adheres to the fabric without any flaws. After the machine is properly adjusted, test it with the fabric, and then the laboratory technician will conduct a hydrostatic pressure test. Once the test is passed, heat-seal the garment. All seams are bonded using non-woven hot melt adhesive via ultrasonic waves, making the protective clothing seamless and free of pinholes. This enhances the tensile strength of the seams, completely eliminating air, water, and bacteria leaks at the seams, and ensuring comfortable wear.

[0030] The specific steps of S6 are as follows: The shift inspection personnel conduct an appearance inspection, and there should be no problems such as burrs, damage, weak adhesion, open stitches, or skipped stitches. The inspection records of qualified and unqualified products are made. Qualified products are transferred to packaging, and unqualified products are rectified. Technical personnel are responsible for quality control. Defective products must not be transferred to the next process. After the product passes inspection, it is folded.

[0031] The specific steps for S7 are as follows: The product enters a large ethylene oxide sterilizer for sterilization. The sterilization process includes: preheating, vacuuming, humidification and chemical injection, sterilization, ventilation to remove residual gases, and an effective sterilization time of 480 minutes. After 14 days of analysis in the analysis room, samples are taken by inspection personnel for full-performance testing. Once the test is passed, an inspection report is issued, and the product is transferred to the finished product warehouse.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A full-process protective suit, comprising an upper garment (1) for main body connection, trousers (2) sewn below the upper garment (1), a hood (3) sewn to the upper part of the upper garment (1), and shoe covers (4) sewn to the lower part of the trousers (2), characterized in that, Also includes: Accessories for sewing together with a top (1), trousers (2) and a hat (3), the accessories including: Breathing mask (5), said breathing mask (5) is sewn to the front end of cap (3); Headband (6), said headband (6) is attached to the upper part of the inside of the hat (3); One-way ventilation valve (7), two one-way ventilation valves (7) are respectively fixedly sewn to the back of the pants (2) at the knee crease and at the back of the shirt (1), the one-way ventilation valve (7) includes: Valve body shell (701), with several vent holes (702) on the front end face and the bottom. A filter element (703) is placed inside the valve body shell (701), and the upper end of the filter element (703) is hinged to the inner side of the valve body shell (701).

2. A complete process for processing protective clothing, characterized in that, The specific operation includes the following steps: S1. High antistatic nonwoven fabric, breathable membrane and hot melt adhesive are pressed together by a laminating machine to make a composite fabric; S2. Cut the composite fabric to the appropriate size for the part; S3. Inspect the cut pieces and remove any defective pieces; S4. Obtain the auxiliary materials from the warehouse according to the number of cut pieces, and then start sewing the qualified cut pieces; S5. After sewing is completed, use a hot air blower to heat seal the seams with adhesive tape, and treat the seams with sealing strips; S6. The processed protective suits are then inspected; S7. Finally, it enters a large ethylene oxide sterilizer for sterilization and analysis. After passing inspection, it is then sent to the finished product warehouse.

3. The full-process protective clothing processing method according to claim 2, characterized in that, The specific steps of S1 are as follows: using high antistatic nonwoven fabric + breathable membrane + hot melt adhesive, stretching and flattening, antistatic composite membrane, produced by laminating machine and hot melt adhesive machine. The fabric includes a layer of fabric with appropriate density and structure, which can be breathable and moisture-permeable, and can shield liquids such as water, blood and body fluids. This layer of fabric is made by appropriate functional finishing process with appropriate liquid repellent finishing agent.

4. The full-process protective clothing processing method according to claim 2, characterized in that, The specific steps of S2 are as follows: materials are retrieved from the clean raw material warehouse, removed from the outer packaging in the unpacking room, impurities are filtered out through the air shower system, and after being sterilized by ultraviolet light through the pass-through window, they enter the 100,000-level clean production workshop, are transferred to the cutting department, and are separated according to the reverse side of the fabric, with the film side as the front side. The materials are arranged according to the production order quantity, and when pulling the fabric, the fabric is pulled in one order with the front side facing up, the fabric edges are neat and vertical, and the fabric surface is flat without wrinkles. Then, it is cut by a CNC automatic cutting machine. The garment pieces cut by the automatic cutting machine are more accurate and standard, with an error within 0.01mm. The cut pieces are separated according to specifications and placed on different shelf carts, and the goods identification cards are attached.

5. The full-process protective clothing processing method according to claim 2, characterized in that, The specific steps for S3 are: check the front and back of the cut piece, and whether there is any major damage to the quality of the cut piece.

6. The full-process protective clothing processing method according to claim 2, characterized in that, The specific steps of S4 are as follows: The first process is four-line sewing. First, fold the trouser pieces right sides together and align the edges. Place them on the presser foot of the machine and lift the presser foot and step down the pedal. Place the front crotch, back crotch, and lower crotch of the trouser pieces on the presser foot of the machine and lift the presser foot and step down the pedal to sew them together. Lay the garment piece flat on the work surface, align the underarm seams, fold it inwards with the right side facing in, place it on the presser foot of the machine, lift the presser foot and step down the pedal to sew; Place the shrink cotton on top, then the meltblown fabric on the bottom, and lay it flat on the machine presser foot. Secure it with a 0.1mm visible seam sewing machine, following the circle of the cut piece. After securing, place it at the cut edge of the garment piece and secure the garment piece and shrink cotton together with a computer-controlled sewing machine. Lay the top right side up on the work surface and sew it together with the right sides of the bottom fabric. Use a flat sewing machine to sew the extended zipper on the front placket. The hat is sewn together with the collar of the garment piece by computer-controlled flat sewing with the inside out, ensuring that the hat and body piece are fully connected together. The foot covers are sewn together with the trouser pieces using a four-thread overlock sewing machine, and then heat-sealed with adhesive.

7. The full-process protective clothing processing method according to claim 2, characterized in that, The specific steps for S5 are as follows: Use a hot air machine to heat-seal all seams. First, confirm the parameters of the heat-sealing machine: temperature 210-230 degrees Celsius, speed 14-16 meters per minute. If the temperature is 220-240 degrees Celsius, the speed should be 12-14 meters per minute. If the fabric has good temperature resistance and the operator is skilled, the operating temperature can be appropriately increased to ensure that the adhesive is fully softened and completely adheres to the fabric without any flaws. After the machine is properly adjusted, test it with the fabric first, and then the laboratory technician will conduct a hydrostatic pressure test. Once the test is passed, heat-seal the garment.

8. The full-process protective clothing processing method according to claim 2, characterized in that, The specific steps of S6 are as follows: The shift inspection personnel conduct an appearance inspection, and there should be no problems such as burrs, damage, weak adhesion, open stitches, or skipped stitches. The inspection records of qualified and unqualified products are made. Qualified products are transferred to packaging, and unqualified products are rectified. Technical personnel are responsible for quality control. Defective products must not be transferred to the next process. After the product passes inspection, it is folded.

9. The full-process protective clothing processing method according to claim 2, characterized in that, The specific steps for S7 are as follows: The product enters a large ethylene oxide sterilizer for sterilization. The sterilization process includes: preheating, vacuuming, humidification and chemical injection, sterilization, ventilation to remove residual gases, and an effective sterilization time of 480 minutes. After 14 days of analysis in the analysis room, samples are taken by inspection personnel for full-performance testing. Once the test is passed, an inspection report is issued, and the product is transferred to the finished product warehouse.

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