Molding process for ice rescue suits

Abstract

The forming process of the ice rescue suit relates to a forming process of special protective clothing. The purpose is to provide a formed rescue suit which can be applied to ice rescue tasks and has good performance. The forming process of the ice rescue suit includes a forming process of a three-layer structure. The body part of the outer anti-immersion suit is formed into a cavity through sewing, heat sealing and pasting strips or high-frequency heat sealing process, and is spliced into a protective cap through blind seam and glue coating process. The zipper, local reinforcement components and pocket fixing structure are connected with the body part through high-frequency heat sealing process. The protective cap, protective boots and gloves are connected with the body part through corresponding processes. The warm and buoyant inner liner layer sheet is bonded into the outer buoyant foam material part. The inner layer lining is connected with the outer buoyant foam material through sewing, and is connected with the outer anti-immersion suit through Velcro and zipper. The body part of the inner cold-proof suit is connected with the sandwiched wadding through different sewing processes.

Description

Technical Field

[0001] This invention relates to the field of special garment processing technology, and in particular to a molding process for an ice rescue suit. Background Technology

[0002] In most parts of northern my country, winter temperatures are low, causing natural or artificial water bodies to freeze over. Typically, outdoor temperatures during the coldest season range from -10°C to -40°C, reaching around -50°C in areas like Beiji Village. At these temperatures, the ice is relatively thick, and its load-bearing capacity is generally sufficient for the safe passage of people and small vehicles. However, in the early winter or early spring, the frozen ice may not have reached a safe thickness, may be uneven in thickness, or its structure may have changed due to sunlight absorption, resulting in insufficient load-bearing capacity. If people, livestock, or small vehicles attempt to cross the ice, it can easily break and cause them to fall. Statistics show that nearly 1,000 incidents of people and vehicles falling into water due to ice collapse occur in my country every winter. Only a small percentage are self-rescued or rescued by others; nearly 70% do not receive timely and effective rescue. Measurements have shown that in 0°C water, a person can lose sensation in their entire body within 15 minutes; in flowing water at -10°C, the entire body can become numb and stiff within 4 minutes, losing the ability to save themselves or cooperate with rescue efforts.

[0003] Therefore, while my country's fire and rescue teams and civilian rescue organizations are actively researching and training for ice rescue, they are still lacking in specialized personal protective equipment for ice rescue. Rescuers often wear rescue suits, firefighting gear, and cotton-padded clothing during ice rescue operations, which can easily lead to abrasions, scratches, punctures, and rapid hypothermia upon falling into the water, affecting rescue operations and even threatening the lives and health of the rescuers themselves.

[0004] A fire-fighting water and ice rescue protective suit disclosed in the application publication of Chinese invention patent (CN111838800A) uses a three-layer composite waterproof fabric and a molding process combining sewing and heat sealing adhesive strips. Although the rescue suit adopts an innovative dry design, keeping the wearer's body dry throughout the water rescue operation and greatly improving the safety and comfort of working in water, the outermost layer of the rescue protective suit is a fabric layer, which easily absorbs water and becomes heavy after prolonged contact with water, and freezes in cold air. In addition, it lacks a buoyancy inner layer and integrated protective gloves and hat, making it unsuitable for ice rescue missions.

[0005] Currently, existing ice rescue suits suffer from problems such as poor insulation, inadequate protection, and poor overall compatibility with the usage environment. Furthermore, the molding process is immature, unstable, and lacks specificity in the manufacturing process for different parts. Therefore, this invention optimizes and refines the current molding process for ice rescue suits, improving and optimizing the protective performance of the garment to meet ideal application requirements. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a molding process for an ice rescue suit that is suitable for ice rescue missions and has good performance.

[0007] The molding process of the ice rescue suit of this invention includes the molding process of a three-layer structure consisting of an outer anti-immersion suit, a thermal buoyancy inner liner, and an inner cold-weather suit, from the outside in.

[0008] The molding process of the outer anti-immersion garment includes:

[0009] A protective cap conforming to the shape of a human head is assembled by using a blind-stitching and adhesive-coating process.

[0010] The body panels of the outer anti-immersion suit are formed into cavities using heat-sealing tape or high-frequency heat sealing. Zippers, local reinforcement components, and pocket fixing structures of the body panels of the outer anti-immersion suit are all connected to the body panels using high-frequency heat sealing. The protective cap and protective boots are connected to the body panels of the outer anti-immersion suit using heat-sealing tape.

[0011] The gloves and the bulk of the outer waterproof garment are connected in a sealed manner using a sewn heat-sealing strip, adhesive coating, or a quick-change and disassembly system.

[0012] The molding process of the insulated buoyancy liner includes:

[0013] The foam material is processed into sheets, and multiple sheets are coated and bonded together with adhesive to form an outer buoyancy foam material section that is suitable for the human body and compatible with the outer waterproof garment.

[0014] The inner lining of the thermal buoyancy liner is connected to the outer buoyancy foam material by sewing.

[0015] Zippers and nylon hook-and-loop fasteners are secured to the outer waterproof garment and the thermal buoyancy liner through flat seams, allowing the thermal buoyancy liner to be connected to the outer waterproof garment.

[0016] The molding process of the inner layer of the cold-weather clothing includes:

[0017] The interlayer wadding is connected to the inner lining by quilting.

[0018] The main body panels of the inner layer of the winter coat are joined using a flat-seam technique, and the main body panels are also joined to the quilted inner layer panels using the same flat-seam technique.

[0019] The edges of the inner layer of the winter coat are sewn using a binding stitching technique.

[0020] The molding process of the ice rescue suit of the present invention, wherein the protective cap is sewn using a sewing heat-sealing strip process.

[0021] The molding process of the ice rescue suit of the present invention, wherein the sewing method of the heat-sealing strip sewing process includes flat sewing, four-needle six-thread sewing or blind sewing.

[0022] The molding process of the ice rescue suit of the present invention, wherein the protective cap and protective boots are sewn with a flat seam through a heat-sealing strip sewing process.

[0023] The molding process of the ice rescue suit of the present invention involves sewing the inner lining fabric and the outer buoyancy foam material of the thermal buoyancy liner together and then binding the edges, using a bias strip to wrap the seam edge of the inner lining fabric and the foam material.

[0024] The molding process of the ice rescue suit of the present invention, wherein when sewing the zipper that fixes the outer anti-immersion suit and the thermal buoyancy liner, one side of the zipper teeth is sewn around the right front center, collar and left front center of the thermal buoyancy liner in sequence, and the other side of the zipper teeth is set in the same position on the inside of the outer anti-immersion suit.

[0025] The molding process of the ice rescue suit of the present invention, wherein the nylon hook and loop fasteners are set at the left and right cuffs and foot openings of the thermal buoyancy inner liner and at the corresponding positions on the inner side of the outer anti-immersion suit.

[0026] The molding process of the ice rescue suit of the present invention, wherein the nylon hook and loop fasteners are designed to prevent misalignment, and each foot and cuff has two sections of nylon hook and loop fasteners, one section being the hook and loop surface and the other section being the hook and loop surface.

[0027] The molding process of the ice rescue suit of the present invention, wherein the interlayer wadding part has a fluffy structure and contains still air.

[0028] The molding process of the ice rescue suit of the present invention, wherein the collar and cuffs in the local edge area are covered and sewn with soft and elastic fabric.

[0029] The molding process of the ice rescue suit of this invention differs from the prior art in that the molding process of the ice rescue suit of this invention has been specifically designed for the outer layer, inner layer and inner liner of the rescue suit, which improves the performance and process stability of the three-layer structure and reduces the overall production cost.

[0030] The outer anti-immersion garment sealing molding of the present invention uses corresponding molding processes for different connection parts, material properties, structural designs, finished product production types and usage requirements, thereby improving the final protection, durability and maintenance convenience of the ice rescue garment, improving the processing convenience, process stability and production efficiency of the ice rescue garment production process and reducing processing costs.

[0031] The present invention provides a thermal buoyancy liner with specific adhesive sealing molding processes for the thermal buoyancy components, flat seam and binding seam processes for the lining fabric connection, and assembly molding processes. These targeted processes for different parts, materials, and functions enable the thermal buoyancy liner to possess excellent sealing and protection, ease of use, and wearing comfort, and also ensure good compatibility with the various modules of the outer waterproof outer layer and the inner cold-weather inner layer.

[0032] The inner layer of the winter coat in this invention uses conventional sewing techniques such as quilting, straight stitching, and binding. However, by applying these conventional techniques to different applications of clothing function and usage environment, the warmth and cold-weather insulation of the inner layer of the winter coat are improved, while also providing an aesthetically pleasing appearance and a comfortable and convenient wearing experience. For example, the interlayer wadding of the winter coat uses a partial quilting process with the inner lining fabric, which not only provides a certain degree of fixation but also reduces through-holes, appropriately retaining internal still air and fluffiness. This improves upon problems such as bulkiness, excessive inner layer feel, wadding clumping, and misalignment of the inner lining fabric found in conventional cotton coats.

[0033] The molding process of the ice rescue suit of the present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the outer anti-immersion garment structure in the molding process of the ice rescue suit of the present invention;

[0035] Figure 2 This is a schematic diagram of the structure of the thermal buoyancy inner liner in the molding process of the ice rescue suit of the present invention;

[0036] Figure 3 This is a schematic diagram of the inner layer of the cold-weather clothing in the molding process of the ice rescue suit of the present invention; Detailed Implementation

[0037] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the invention.

[0038] like Figures 1-3 As shown, the molding process of the ice rescue suit of the present invention includes a molding process of a three-layer structure consisting of an outer anti-immersion suit, a thermal buoyancy liner, and an inner cold-proof suit. The thermal buoyancy liner is detachably fixed inside the outer anti-immersion suit, and the inner cold-proof suit is set independently.

[0039] The molding process specifically includes the following steps:

[0040] 1. Outer layer anti-immersion garment molding process

[0041] The outer immersion suit includes a protective cap, bodysuit, and gloves. The bodysuit includes a jacket, trousers, protective boots, and fasteners.

[0042] (1) Manufacturing process of the protective cap

[0043] The protective cap is integrated with the outer waterproof suit into a single structure, primarily serving to protect against wind, water, and heat. Since the cap cannot be molded in one piece, it requires the joining of pieces of different shapes to create a more fitting structure for the human head. Instead of conventional flat stitching or simple four-needle six-thread sewing, a blind-stitch adhesive-coated molding process is used in this part, eliminating needle holes that penetrate the inner and outer surfaces of the cap, thus providing superior wind, water, and warmth protection.

[0044] Blind stitching with adhesive refers to first bonding the protective cap panels together with adhesive, and then reinforcing them with a blind stitch machine. Blind stitching refers to a sewing process where the sewing thread enters from one side of the fabric but does not penetrate to the other side to achieve the splicing and fixing. This invention uses this process, which effectively reinforces the panels after adhesive bonding, while the stitches do not penetrate to the inner or outer sides of the fabric, thus achieving a barrier against water and airflow, improving warmth. In this embodiment, the protective cap panels are made of 4mm thick material. Adhesive is applied to both sides of the panels to be joined at room temperature, and the splicing surfaces are pressed to ensure complete bonding. After curing at room temperature for 5 minutes, blind stitching is performed using a single-needle, double-thread chain stitch.

[0045] In other embodiments, the protective cap can also be formed using a heat-sealing strip sewn on. The heat-sealing strip sewn process involves first fixing the cap panels together by sewing, using methods including but not limited to straight stitch, four-needle six-thread stitch, or blind stitch. Then, a heat-sealing machine is used to heat-melt adhesive strips onto the sewn seams, achieving secondary reinforcement. The molten adhesive penetrates and seals any gaps caused by through-sewing or incomplete sewing, thus achieving the same barrier and insulation properties.

[0046] (2) Body part craftsmanship

[0047] The main body is a one-piece structure that connects the top, trousers, protective hat, and protective boots. It includes multiple pieces of fabric of different shapes, zippers, protective hats, protective boots, as well as local reinforcement components on the outside of the main body, pocket connectors, and other fixing structures. The main body adopts two main molding processes: high-frequency heat sealing and sewing heat-sealing strips, to achieve a relatively sealed cavity in the garment.

[0048] The process for sewing heat-sealing strips is the same as that for protective helmets, with flat stitching being the primary method. Using this process for both protective helmets and boots effectively solves adhesion, sealing, and strength issues caused by differences in material properties between the protective helmet and the main body material by matching appropriate adhesive strips. It also increases the connection strength of the connectors and extends their service life.

[0049] The principle of high-frequency heat sealing is to use the high-frequency electric field of the high-frequency heat sealing machine to cause the molecules inside the materials to be bonded to vibrate, thereby generating heat energy to achieve bonding. The shape and size of the bonding area depend on the shape and size of the mold on the high-frequency heat sealing machine that contacts the materials to be bonded. Therefore, different bonding effects can be achieved by changing the mold. The forming characteristic of this process is that no new pinholes or other leakage points penetrating both sides of the fabric are generated during the splicing, fixing, and bonding process. Therefore, it is more suitable for the preparation of airtight and watertight products. The zippers, local reinforcement components, and pocket fixing structures of the ice rescue suit of this invention all adopt this process. The high-frequency heat sealing of the zipper avoids the problem of the zipper surface being smooth and relatively stiff, making it difficult to sew. The fixing structures such as local reinforcement components and pocket connectors are fixed to the outer surface of the ice rescue suit, leaving open channels or spaces for inserting rescue belts, adjustment belts, and storing ice picks, rescue equipment, and other items. Therefore, it can effectively solve the problem of moisture penetration caused by the inability of the open structure to fully seal every stitch in the sewing heat sealing strip process.

[0050] The joining of fabric pieces can be achieved using either sewing heat-sealing tape or high-frequency heat sealing. For diverse products and customized ice rescue suits, sewing heat-sealing tape eliminates the need for custom tooling molds, offering greater flexibility, effectively reducing production costs, and improving efficiency. For mass-produced, standard ice rescue suits, high-frequency heat sealing uses relatively fixed tooling molds, eliminating one processing step compared to sewing or tapering, thus effectively improving production efficiency and reducing processing time costs.

[0051] In this embodiment, the main fabric is first cut according to the pattern. Then, while splicing the cut pieces, zippers, local reinforcement components, pocket connectors, and other structures are fixed at corresponding positions on the cut pieces. The splicing between the cut pieces uses a flat stitch technique with a stitch length of 10-12 stitches / 3cm. Afterward, a heat-sealing process is used for sealing. The heat-sealing process parameters are: polyurethane adhesive strip, bonding temperature 300℃, bonding speed 2.5-3m / min, bonding wheel pressure 0.2MPa, and nozzle airflow 0.5-0.6. The zippers, local reinforcement components, and pocket connectors use a high-frequency heat-sealing process. The high-frequency heat-sealing process parameters are: zipper temperature 70℃, current 0.2A, time 8s; other parts temperature 45℃, current 0.2A, time 5s. Finally, the protective cap and boots are connected at the collar and foot openings using a sewing tape technique. The sewing process is the same as that of the main body. The heat-sealing tape process parameters are: polyurethane adhesive tape, bonding temperature 450℃, bonding speed 2.5-3m / min, bonding roller pressure 0.2MPa, and nozzle airflow 0.5-0.6.

[0052] (3) Glove connection process

[0053] The gloves are sealed to the outer layer of the immersion suit, and can be either a one-piece or replaceable structure. The molding process for this part can be achieved by using a sewn heat-sealing strip, adhesive coating, or a quick-change and disassembly system to form a sealed and warm cavity for hand protection.

[0054] The heat-sealing strip and adhesive coating are integrated into a single connection structure. The heat-sealing strip process is the same as that for the main body. The adhesive coating uses an adhesive that is compatible with the material properties of both the glove and the main body connection. The adhesive is applied directly to the outer layer of the glove at room temperature and pressure. The coated area overlaps with the outer waterproof garment and cures. This process reduces the difficulty of operating instruments and equipment for components with small pores, such as gloves.

[0055] The quick-change and disassembly system connection technology refers to a system consisting of a buckle system. One part of the buckle is fixed to the ice rescue suit with adhesive or heat-sealing strips, and the other part is fastened to the part fixed to the rescue suit after being put on the glove, thus forming a sealed connection structure. The typical feature of this technology is that it can be quickly changed and disassembled. Gloves are easily soiled and worn, and quick change and disassembly effectively ensure the user's use, maintenance and repair, while also extending the service life of the rescue suit.

[0056] In this embodiment, the glove adopts a quick-change and disassembly system connection process. First, a part of the quick-change and disassembly system is coated with adhesive at room temperature and cured and connected to the cuff of the main body. Then, the glove is put into the other part of the system, and the two parts of the system are aligned with the fastening point and fastened directly to form a watertight sealing structure.

[0057] 2. Molding process for heat-insulating and buoyant inner liner

[0058] The thermal buoyancy liner includes a main body, which includes an outer buoyancy foam material, an inner lining, and connectors on the outer buoyancy foam material for connecting with the outer waterproof garment.

[0059] (1) Process of outer layer buoyancy foam material

[0060] The buoyancy foam material in the insulating liner is the main component providing insulation and buoyancy. Since it's difficult to directly form a foam structure that conforms to the human body shape, the foam material needs to be processed into sheets of a certain thickness. These sheets are then cut into different shapes and spliced ​​together to create a fit that matches the outer waterproof outer layer. The buoyancy foam sheet splicing process uses adhesive coating and bonding. Adhesive is applied to the cross-sections of two foam sheets to be joined, and the sheets are then joined, pressed, and fixed before high-temperature curing for a sealed connection. This process avoids needle holes, resulting in a relatively airtight structure that effectively isolates moisture and air, improving waterproofing and cold protection. Furthermore, in fabrics formed by interwoven yarns, needle holes in directly stressed areas are prone to tearing, while the foam material adhesive process effectively improves tensile and tear strength.

[0061] In this embodiment, the buoyancy foam sheet is first cut according to the pattern, and adhesive is evenly applied to the two cross sections of the cut sheet to be connected under normal temperature. After aligning the connection position, it is squeezed and fixed, and then placed in a high temperature environment of 60-80℃ for 1 minute for rapid curing.

[0062] (2) Inner lining fabric process

[0063] The inner lining primarily serves to provide wearing comfort, reduce friction, protect the thermal buoyancy layer, and connect with the anti-immersion garment. The forming process mainly includes flat stitching and binding. Flat stitching is used for sewing the inner lining and connecting it to the outer foam material. Binding mainly uses bias tape to wrap the seam edges of the inner lining and foam material to prevent the stitches from coming undone and reduce edge friction, thereby extending the garment's lifespan.

[0064] In this embodiment, the inner lining fabric is first cut according to the pattern, and then the pieces are connected by a flat sewing process with a stitch length of 8-10 stitches / 3cm. The pieces formed by flat sewing are then bound with an edge-sealing process, using bias tape to wrap and sew the seam allowances of the inner lining fabric and the foam material.

[0065] (3) Process of the connection part with the outer waterproof garment

[0066] The connection between the thermal buoyancy liner and the immersion suit is mainly through zippers and nylon hook and loop fasteners, which are fixed to the immersion suit and thermal buoyancy liner through a flat-seam process.

[0067] One side of the zipper teeth is sewn around the right front center, collar, and left front center of the thermal buoyancy liner. The other side of the zipper teeth is placed in the same position on the inside of the outer anti-immersion suit. The buoyancy liner can be fixed or removed by opening and closing the zipper. The zipper covers the entire dressing and doffing opening to avoid affecting the quick dressing and doffing of the ice rescue suit.

[0068] The thermal buoyancy liner features nylon hook and loop fasteners at the left and right cuffs and hems, with corresponding fasteners also present on the inside of the outer waterproof garment. The thermal buoyancy liner is secured or removed by opening and closing the hook and loop sides of the fasteners. The fasteners incorporate an anti-misalignment design, with two sections of nylon hook and loop fastener at each hem and cuff: one with the loop side and the other with the hook side. In addition to providing a strong adhesive effect, this effectively prevents misalignment between the thermal buoyancy liner and the outer waterproof garment at the arms and legs.

[0069] In this embodiment, the connection between the thermal buoyancy liner and the anti-immersion garment is achieved using a zipper and nylon hook-and-loop fasteners. After the buoyancy foam material and the outer anti-immersion garment are formed, the nylon hook-and-loop fasteners are fixed to the wrists and ankles using a flat-seam process. After the buoyancy foam material and the inner lining are formed, the zipper is sewn onto the right front center, collar, and left front center of the thermal buoyancy liner and the outer anti-immersion garment using a flat-seam process. Flat-seam parameters: flat-seam machine, stitch length 8-10 stitches / 3cm.

[0070] 3. Molding process of inner layer cold-proof clothing

[0071] The inner layer of the cold-weather clothing consists of a main body, which has a three-layer structure, with an inner layer structure.

[0072] (1) Process of interlayer floc section

[0073] The interlayer wadding has a fluffy structure that traps still air for warmth. The wadding is manufactured using a quilting process, partially quilting the wadding and lining to ensure uniform thickness and a fixed shape. This effectively prevents the wadding from shifting or piling up, avoiding misalignment of the lining when putting on or taking off the garment. Furthermore, the quilting only partially connects the wadding to the lining, eliminating exposed stitches on the outer layer for better wearability and aesthetics. The needle stitches do not run directly through the entire garment, enhancing windproof and warmth retention. Additionally, the quilting in areas prone to shifting further improves fit and convenience while preserving as much still air and warmth as possible.

[0074] In this embodiment, the interlayer wadding is quilted. After the interlayer wadding and inner lining are cut into pieces according to the pattern, they are quilted in the form of rectangular grids. The quilted grids of the main body, which are less prone to misalignment, are relatively large, while the quilted grids of the foot area, which are prone to overstitching, are relatively small. Quilting process parameters: quilting machine, 6-8 stitches / 3cm.

[0075] (2) Body part craftsmanship

[0076] The main body of the garment uses a flat seam technique, which serves to fix and splice between layers, cut pieces, zippers, foot pedals, and thumb sleeves, ensuring that the seam connections are strong enough to withstand the stress during wearing and taking off.

[0077] In this embodiment, the connection of the cut outer layer pieces, the connection of the inner and interlayer quilted pieces to the outer layer, and the fixing of the zipper, foot pedals, and thumb sleeves are all done using a flat sewing process. The flat sewing process parameters are: flat sewing machine, 10-12 stitches / 3cm.

[0078] (3) Processing of local edge areas

[0079] The edges are bound with a binding stitching process. The collar and cuffs are covered with a soft and resilient fabric to prevent the cut edges from coming undone. This gives the winter coat a tight-fitting collar and cuff structure, as well as good skin comfort and wear resistance.

[0080] In this embodiment, to prevent yarn fraying, the edges of the cut fabric need to be bound with a 45° bias binding strip (with slight elasticity in the bias direction). The fabric edges are aligned and bound together, with the finished binding width being 0.8-1cm. A 0.1cm topstitch is then applied along the edge of the binding strip on both sides. For the neckline and cuffs, a soft and resilient fabric is used for binding. The binding process parameters are: flat sewing machine, 10-12 stitches / 3cm.

[0081] The outer layer of the anti-immersion suit of this invention has five sealing molding processes. For different connection parts, material properties, structural designs, finished product production types and usage requirements, corresponding molding processes are used to improve the final protection, durability and maintenance convenience of the ice rescue suit, improve the processing convenience, process stability and production efficiency of the ice rescue suit production process and reduce processing costs.

[0082] (1) The protective hat forming process of the present invention uses a blind seam gluing process for thicker materials and a sewing heat sealing strip process for thinner materials. Compared with conventional sewing connection forming, this process can splice and reinforce the hat without producing gaps such as pinholes that penetrate the inside and outside of the protective hat, thus providing better windproof, waterproof and cold-proof insulation.

[0083] (2) As in the molding process of the main body of the present invention, for different connection parts, material properties, structural design and finished product production types, protective hats and protective boots, which have different material properties from the main body and are prone to stress during wearing and taking off, as well as the main body parts of diversified customized production types, adopt the sewing heat sealing strip process to improve the sealing, firmness and connection strength after splicing and bonding, improve processing flexibility and efficiency, and reduce production costs; zippers, local reinforcement parts and pocket fixing structures, which are not easy to sew and have open structures, as well as the main body parts of conventional mass production types, adopt the high frequency heat sealing process to improve waterproof sealing, reduce production steps, save energy and reduce emissions, and reduce production costs.

[0084] (3) For the glove connection part of the present invention, three different processes can be selected for different processing equipment and usage scenarios: sewing heat sealing strip, adhesive coating and quick-replacement disassembly system connection, which improves processability and operability, while taking into account the user's maintenance needs.

[0085] The present invention employs four processing techniques for molding the thermal buoyancy inner liner: adhesive sealing molding for the thermal buoyancy components, flat seam and binding seam techniques for connecting the lining fabric, and connection molding techniques for assembly. These targeted processes for different parts, materials, and functions ensure that the thermal buoyancy inner liner possesses excellent sealing and protection, ease of use, and wearing comfort, and also exhibits good compatibility with the various modules of the outer waterproof outer layer and the inner cold-weather inner layer.

[0086] (1) In the outer buoyancy foam material part of the present invention, the conventional sewing splicing is changed to adhesive splicing, forming a relatively more sealed structure, which has a better effect on improving waterproof, cold protection and warmth retention, and also improves the mechanical properties of the connection, resulting in better wear durability.

[0087] (2) Compared with the molding process of the connection part of the anti-immersion suit and the thermal buoyancy inner liner, which are made into two separate anti-immersion suits and thermal buoyancy inner liners or one-piece non-removable inner liners, the rapid dressing response in emergency rescue is stronger, the use is more convenient, and the washing, maintenance and repair of damage are more convenient. At the same time, the thermal buoyancy inner liner can be added or removed to adapt to different ambient temperatures or to different outer rescue equipment.

[0088] The inner layer of the winter coat of this invention employs three molding processes, all of which are conventional sewing techniques such as quilting, straight stitching, and binding. However, by applying these conventional processes to different applications of the garment's function and usage environment, the warmth and insulation of the inner layer of the winter coat are improved, while also providing an aesthetically pleasing appearance and a comfortable and convenient wearing experience. For example, the interlayer wadding of the winter coat uses a partial quilting process with the inner lining fabric, which not only provides a certain degree of fixation but also reduces through-holes, appropriately retaining internal still air and fluffiness. This addresses problems such as bulkiness, excessive inner layer feel, wadding clumping, and misalignment of the inner lining fabric found in conventional cotton coats.

[0089] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A molding process for an ice rescue suit, characterized in that: The process includes the molding of a three-layer structure consisting of an outer anti-immersion garment, a thermal buoyancy liner, and an inner cold-weather garment, from the outside in. The thermal buoyancy liner is detachably fixed inside the outer anti-immersion garment, while the inner cold-weather garment is set up independently. After molding, the structures of the outer anti-immersion garment, the thermal buoyancy liner, and the inner cold-weather garment are all wearable structures that include a top and pants. The molding process of the outer anti-immersion garment includes: A protective cap conforming to the shape of a human head is assembled by using a blind-stitching and adhesive-coating process. The body panels of the outer anti-immersion suit are formed into cavities using heat-sealing tape or high-frequency heat sealing. Zippers, local reinforcement components, and pocket fixing structures of the body panels of the outer anti-immersion suit are all connected to the body panels using high-frequency heat sealing. The protective cap and protective boots are connected to the body panels of the outer anti-immersion suit using heat-sealing tape. The gloves and the bulk of the outer waterproof garment are connected in a sealed manner using a sewn heat-sealing strip, adhesive coating, or a quick-change and disassembly system. The thermal buoyancy liner includes a main body, which comprises an outer buoyancy foam material, an inner lining fabric, and connectors disposed on the outer buoyancy foam material for connection with the outer waterproof garment. The molding process of the thermal buoyancy liner includes: The foam material is processed into sheets, and multiple sheets are bonded together using adhesive to form an outer buoyancy foam material section that conforms to the human body shape and is compatible with the outer waterproof garment. The process of bonding the outer buoyancy foam material section with adhesive includes: applying adhesive to the cross-section of two foam sheets to be joined, splicing and pressing the sheets together at corresponding positions, followed by heat curing and sealing. The inner lining of the thermal buoyancy liner is connected to the outer buoyancy foam material by sewing. Zippers and nylon hook-and-loop fasteners are secured to the outer waterproof garment and the thermal buoyancy liner through flat seams, allowing the thermal buoyancy liner to be connected to the outer waterproof garment. The molding process of the inner layer of the cold-weather clothing includes: The interlayer wadding is connected to the inner lining by quilting. The main body panels of the inner layer of the winter coat are joined using a flat-seam technique, and the main body panels are also joined to the quilted inner layer panels using the same flat-seam technique. The edges of the inner layer of the winter coat are sewn using a binding stitching technique.

2. The molding process of the ice rescue suit according to claim 1, characterized in that: The protective cap is sewn using a heat-sealing and stitching process.

3. The molding process of the ice rescue suit according to claim 2, characterized in that: The sewing methods for the heat-sealing strip process include flat sewing, four-needle six-thread sewing, or blind sewing.

4. The molding process of the ice rescue suit according to claim 1, characterized in that: The protective hat and boots are sewn with a flat seam using a heat-sealing strip process.

5. The molding process of the ice rescue suit according to claim 1, characterized in that: After the inner lining and outer buoyancy foam of the thermal insulation liner are sewn together, the edges are bound, and bias tape is used to wrap the seam edges of the inner lining and the foam.

6. The molding process of the ice rescue suit according to claim 1, characterized in that: When sewing the zipper that secures the outer anti-immersion garment and the thermal buoyancy liner, one side of the zipper teeth is sewn around the right front center, collar, and left front center of the thermal buoyancy liner in sequence, and the other side of the zipper teeth is placed in the same position on the inside of the outer anti-immersion garment.

7. The molding process of the ice rescue suit according to claim 1, characterized in that: The nylon hook and loop fasteners are installed at the left and right cuffs and leg openings of the thermal buoyancy liner, as well as at the corresponding positions on the inside of the outer waterproof garment.

8. The molding process of the ice rescue suit according to claim 1 or 7, characterized in that: The nylon hook and loop fasteners have an anti-misalignment design, with two sections of nylon hook and loop fasteners at each leg opening and cuff: one section is the hook and loop side, and the other section is the hook and loop side.

9. The molding process of the ice rescue suit according to claim 1, characterized in that: The interlayer flocculent portion has a fluffy structure and contains still air.

10. The molding process of the ice rescue suit according to claim 1, characterized in that: The collar and cuffs at the edges of the area are covered and sewn with soft and elastic fabric.

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