Bag body of cold and hot compress bag, cold and hot compress water bag, electric hot water bag, cold compress ice bag and high-frequency welding mold thereof
By adopting the inner and outer layering design in the bag body of the hot and cold compress bag, the discomfort caused by the protruding edge of the existing hot and cold compress bag body is solved, which improves the user experience and increases the appearance richness of the product.
Patent Information
- Application Number
- CN202420229445.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2025-02-25
- Estimated Expiration
- 2034-01-30
AI Technical Summary
There are bonded edges on the bag body of the existing U-shaped hot and cold water compress bag, which are located in the middle of the bag body, resulting in the bonded edges slightly protruding and burrs when using the neck, which affects the user experience.
A bag body of a hot and cold compress bag is designed, and the inner pocket body part and the outer pocket body part are formed by the inner pocket body part arranged inside and outside, forming an inner cavity of the bag body, so that the bonding edge is away from the inner side of the bag body, thereby improving the user experience.
Through the layering arrangement of the inner and outer bag body parts, the bonding edge is pushed to the outside of the bag body, so that the cold and cold compresses will no longer cause discomfort to the neck, improving the user experience and increasing the richness of the product appearance.
Smart Images
Figure CN222517135U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cold and hot compress bags, in particular to a bag body of a cold and hot compress bag, a cold and hot compress water bag, an electric hot water bag, a cold compress ice bag and a high-frequency welding mold thereof. Background Art
[0002] The types of hot and cold compress bags in the prior art include hot and cold compress water bags, electric hot water bags, and cold compress ice bags filled with phase change materials. The hot and cold compress water bags have an injection port on their bag body, through which cold water or ice water mixture or hot water is injected for cold or hot compress. The electric hot water bag has an electric heating device in its bag body, which heats the liquid filled in the electric hot water bag for hot compress. The cold compress ice bag filled with phase change materials absorbs heat for cold compress through the phase change material filled in the bag body.
[0003] The bag body of the above-mentioned hot and cold compress bag is generally made of soft materials, such as rubber, PVC and silicone, and the bag body is generally formed by combining the edges of the bag body parts by welding or gluing, and forming a combined edge on the bag body.
[0004] Depending on the application of hot or cold compresses on different parts of the body, hot and cold compress bags are designed in various shapes. In order to apply cold or hot compresses to the neck, there is a U-shaped hot and cold compress water bag that can be hung around the neck in the prior art. The hot and cold compress water bag is also called a U-shaped hot water bag on the market. By injecting hot water into the hot water bag, you can hang it around the neck for hot compresses. You can also inject cold water or an ice water mixture and hang it around the neck for cold compresses to relieve discomfort after exercise.
[0005] This type of U-shaped cold and hot compress water bag has an injection port and a cover covering the injection port, and the injection port has a cover seat that matches the cover thread. The bag body of the U-shaped cold and hot compress water bag is generally made of soft material, and the more popular material is PVC, while the cover seat and the cover are made of hard material.
[0006] The technical problem of the existing U-shaped cold and hot compress water bag is that the joint edge 11 on the bag body is located in the middle of the bag body. Fig.36 As shown, the burrs exist on both the inside and outside of the bag body. When the bag is hung around the neck, the inside of the bag body fits against the neck. Even after trimming, the joint edge 11 will still protrude slightly and have burrs, which will make the neck uncomfortable and affect the user experience.
[0007] The reason for this defect is that during the production process, the U-shaped cold and hot compress water bag needs to first be injected into an integral bag body part through an injection mold. The bag body part includes an injection port in the middle of the bag body part and U-shaped bag body parts 19 on both sides of the injection port. The cover seat in the injection port is pre-placed in the mold and combined with the injection port during injection molding; the U-shaped bag body parts 19 on the left and right sides of the bag body part are assembled up and down in the subsequent production steps, and are pressed and welded along the edges through a high-frequency welding mold to form a complete U-shaped cold and hot compress water bag. The production process determines that the joint edge 11 on the inside and outside of the bag body is inevitable.
[0008] Existing conventional hot and cold compress water bags can also be seen to be made by joining two bag parts up and down and then welding them along the edges through high-frequency welding to form a bag body, which will also form a joint edge in the middle of the bag body.
[0009] There is also a kind of cold compress ice bag used for hanging around the neck in the prior art, which is also generally called a neck hanging ice ring. The cold compress ice bag is also U-shaped, including a bag body and a phase change material filled in the bag body. The bag body of the cold compress ice bag is sealed, and the filled phase change material can absorb heat and become liquid after contacting the human body temperature, thereby achieving a cooling effect. The bag body of the cold compress ice bag is generally a TPU film or a PVC film. After two pieces of TPU film sheets or PVC film sheets are spliced up and down, they are welded along the edges by high-frequency pressing to form a semi-finished bag body. In order to avoid the discomfort caused by the joint edge, the semi-finished bag body is turned outward so that the protruding joint edge is located inside the bag body. Finally, the phase change material is filled into the bag body through the reserved opening on the bag body, and the reserved opening is sealed to complete the production of the product. However, the method of turning the bag body outward is only applicable to film bags.
[0010] The disadvantage of this type of cold compress ice bag is that it is a product made of thin film. When it is injected with phase change material, the cross-section will naturally become round or nearly round. The larger the capacity, the smaller the proportion of the contact area with the cold compress part, i.e. the skin of the neck, to the overall surface area, and the worse the cold compress experience. Therefore, the capacity of cold compress ice bags made of this type of film is relatively small, which affects the usage time. Utility Model Content
[0011] The technical problem to be solved by the utility model is that the joint edge on the bag body of the U-shaped cold and hot compress bag is located in the middle of the bag body, and exists on both the inner and outer sides. The joint edge will make the cold and hot compress parts uncomfortable, affecting the user experience.
[0012] The technical solution adopted by the utility model to solve its technical problems is: a bag body of a cold or hot compress bag, which is U-shaped or C-shaped as a whole, and includes: an inner bag body part, which is located on the inner side of the bag body, and the outer surface of the inner bag body part is in an integrated form; an outer bag body part, which is located on the outer side of the bag body, and the edge of the inner bag body part and the edge of the outer bag body part are sealed together to form a bag body cavity between the inner bag body part and the outer bag body part.
[0013] It is further defined that the inner bag body component and the outer bag body component are layered relative to the inside and outside of the bag body, and the edges of the inner bag body component and the edges of the outer bag body component both extend toward the outside of the bag body.
[0014] It is further defined that the inner bag body component is a single-layer structure or a multi-layer structure, the outer bag body component is a single-layer structure or a multi-layer structure, each layer of bag body components is in an integrated form, each layer of bag body components is layered relative to the inside and outside of the bag body, and the edges of each layer of bag body components extend toward the outside of the bag body, and the edges of each layer of bag body components are sealed together.
[0015] It is further defined that the connecting part of the side arms on both sides of the bag body is the top of the bag body, the opening parts of the side arms on both sides of the bag body is the bottom of the bag body, the surface of the bag body is divided into an inner side surface, an outer side surface, a front surface, a rear surface and end surfaces at both ends, the front surface is the surface located in front of the inner side surface and the outer side surface, the rear surface is the surface located behind the inner side surface and the outer side surface, the end surfaces at both ends are the surfaces located at both ends of the inner side surface and the outer side surface, the outer bag body component constitutes the outer side surface of the bag body, the edges of the inner bag body component and the outer bag body component are sealed together to form a joining edge that surrounds the outer side surface of the bag body, and the inner bag body component constitutes the inner side surface, front surface, rear surface and end surfaces at both ends of the bag body.
[0016] It is further defined that the cross section of the inner bag body part is U-shaped or C-shaped.
[0017] It is further defined that both the inner bag body part and the outer bag body part are single-layer structures, and the bag body inner cavity has at least one supporting structure for supporting the bag body inner cavity, and the supporting structure is specifically a local recessed portion of the outer bag body part that is recessed toward the side of the inner bag body part, and the top of the local recessed portion rests on the inner bag body part and is combined with the inner bag body part to form a whole, or only in contact and fit.
[0018] It is further defined that the local recessed portion is circular or elongated.
[0019] It is further defined that the material of the inner bag body part is rubber, PVC or silicone, and the material of the outer bag body part is rubber, PVC, hard plastic or silicone.
[0020] It is further defined that the inner bag body component is a double-layer structure with an internal hollow compartment, including an inner layer component and an outer layer component; the outer bag body component is a single-layer structure; the outer layer component, the inner layer component and the outer bag body component are all in an integrated form, the outer layer component, the inner layer component and the outer bag body component are layered relative to the inside and outside of the bag body, and the edges of the outer layer component, the inner layer component and the outer bag body component are sealed together.
[0021] It is further defined that the inner hollow compartment of the inner bag body component has at least one supporting structure for supporting the inner hollow compartment, the supporting structure is located on the inner layer component and / or the outer layer component, and the supporting structure is specifically a supporting rib.
[0022] A hot or cold compress water bag comprises a bag body and a cover; the bag body is U-shaped or C-shaped as a whole, comprising an inner bag body part and an outer bag body part, the inner bag body part is located on the inner side of the bag body, the outer surface of the inner bag body part is in an integrated form, the outer bag body part is located on the outer side of the bag body, the edge of the inner bag body part and the edge of the outer bag body part are sealed together to form a bag body cavity between the inner bag body part and the outer bag body part; an injection port is provided on the inner bag body part or the outer bag body part, and the cover covers the injection port.
[0023] It is further defined that a cap seat is provided in the injection port for mating with the cover thread.
[0024] It is further defined that the injection port is located at the top of the bag body; or the injection port is located at the outer side of the bottom end of one side arm.
[0025] An electric hot water bag comprises a bag body, an electric heating device and a socket; the bag body is U-shaped or C-shaped as a whole, comprising an inner bag body part and an outer bag body part, the inner bag body part is located on the inner side of the bag body, the outer surface of the inner bag body part is in an integrated form, the outer bag body part is located on the outer side of the bag body, the edge of the inner bag body part and the edge of the outer bag body part are sealed together to form a bag body cavity between the inner bag body part and the outer bag body part; a socket opening is provided on the inner bag body part or the outer bag body part, the socket is installed in the bag body through the socket opening, the socket is electrically connected to the electric heating device, the electric heating device is distributed in the bag body cavity, and is used to heat the liquid filled in the bag body cavity.
[0026] A cold compress ice bag comprises a bag body and a phase change material. The bag body is U-shaped or C-shaped as a whole, and comprises an inner bag body part and an outer bag body part. The inner bag body part is located on the inner side of the bag body, and the outer surface of the inner bag body part is in an integrated form. The outer bag body part is located on the outer side of the bag body. The edge of the inner bag body part and the edge of the outer bag body part are sealed together to form a bag body inner cavity between the inner bag body part and the outer bag body part; the phase change material is filled in the bag body inner cavity.
[0027] It is further defined that the bag body is a fully enclosed bag body.
[0028] A high-frequency welding mold is used for high-frequency welding of a bag body to be welded. After the bag body to be welded is subjected to high-frequency welding, the edge is trimmed as needed to obtain the bag body of the above-mentioned hot and cold compress bag. The bag body to be welded is assembled from the bag body parts of the hot and cold compress bag, or assembled from the semi-finished bag body parts of the bag body of the hot and cold compress bag; each semi-finished bag body part is a bag body part that continues to extend outward on the basis of the edge of each bag body part as a process reserved edge, including an upper mold, a middle mold and a lower mold arranged from top to bottom The middle mold has a material cavity for accommodating the bag to be welded in a flat state. The inner side of the middle mold surrounding the material cavity is provided with a welding seat, which is used to allow the edges of each bag body component or each semi-finished bag body component of the bag to be welded to be sleeved on the welding seat. The welding seat has a welding surface, and the upper mold and the lower mold also have welding surfaces. The welding surface on the upper mold is used to cooperate with the welding surface on the upper half of the welding seat, and the welding surface on the lower mold is used to cooperate with the welding surface on the lower half of the welding seat, so as to weld the edges sandwiched between the welding surfaces.
[0029] A hot or cold compress bag is U-shaped or C-shaped as a whole, and includes a bag body, wherein the bag body includes: an inner bag body part, which is located on the inner side of the bag body and whose outer surface is in an integrated form; and an outer bag body part, which is located on the outer side of the bag body, wherein the edge of the inner bag body part and the edge of the outer bag body part are sealed together to form an inner bag body cavity between the inner bag body part and the outer bag body part.
[0030] It is further defined that the inner bag body component and the outer bag body component are layered relative to the inside and outside of the bag body, and the edges of the inner bag body component and the edges of the outer bag body component both extend toward the outside of the bag body.
[0031] It is further defined that the inner bag body component is a single-layer structure or a multi-layer structure, the outer bag body component is a single-layer structure or a multi-layer structure, each layer of bag body components is in an integrated form, each layer of bag body components is layered relative to the inside and outside of the bag body, and the edges of each layer of bag body components extend toward the outside of the bag body, and the edges of each layer of bag body components are sealed together.
[0032] It is further defined that the connecting part of the side arms on both sides of the bag body is the top of the bag body, the opening parts of the side arms on both sides of the bag body is the bottom of the bag body, the surface of the bag body is divided into an inner side surface, an outer side surface, a front surface, a rear surface and end surfaces at both ends, the front surface is the surface located in front of the inner side surface and the outer side surface, the rear surface is the surface located behind the inner side surface and the outer side surface, the end surfaces at both ends are the surfaces located at both ends of the inner side surface and the outer side surface, the outer bag body component constitutes the outer side surface of the bag body, the edges of the inner bag body component and the outer bag body component are sealed together to form a joining edge that surrounds the outer side surface of the bag body, and the inner bag body component constitutes the inner side surface, front surface, rear surface and end surfaces at both ends of the bag body.
[0033] It is further defined that the cross section of the inner bag body part is U-shaped or C-shaped.
[0034] It is further defined that both the inner bag body part and the outer bag body part are single-layer structures, and the bag body inner cavity has at least one supporting structure for supporting the bag body inner cavity, and the supporting structure is specifically a local recessed portion of the outer bag body part that is recessed toward the side of the inner bag body part, and the top of the local recessed portion rests on the inner bag body part and is combined with the inner bag body part to form a whole, or only in contact and fit.
[0035] It is further defined that the local recessed portion is circular or elongated.
[0036] It is further defined that the material of the inner bag body part is rubber, PVC or silicone, and the material of the outer bag body part is rubber, PVC, hard plastic or silicone.
[0037] It is further defined that the inner bag body component is a double-layer structure with an internal hollow compartment, including an inner layer component and an outer layer component; the outer bag body component is a single-layer structure; the outer layer component, the inner layer component and the outer bag body component are all in an integrated form, the outer layer component, the inner layer component and the outer bag body component are layered relative to the inside and outside of the bag body, and the edges of the outer layer component, the inner layer component and the outer bag body component are sealed together.
[0038] It is further defined that the inner hollow compartment of the inner bag body component has at least one supporting structure for supporting the inner hollow compartment, the supporting structure is located on the inner layer component and / or the outer layer component, and the supporting structure is specifically a supporting rib.
[0039] It is further defined that there is a cover; the inner bag body part or the outer bag body part has an injection port, and the cover covers the injection port.
[0040] It is further defined that a cap seat is provided in the injection port for mating with the cover thread.
[0041] It is further defined that the injection port is located at the top of the bag body; or the injection port is located at the outer side of the bottom end of one side arm.
[0042] It is further defined that it also includes an electric heating device and a socket; a socket opening is provided on the inner bag body part or the outer bag body part, the socket is installed in the bag body through the socket opening, the socket is electrically connected to the electric heating device, and the electric heating device is distributed in the inner cavity of the bag body for heating the liquid filled in the inner cavity of the bag body.
[0043] The invention is further defined as comprising a phase change material, wherein the phase change material is filled in the inner cavity of the bag body.
[0044] It is further defined that the bag body is a fully enclosed bag body.
[0045] The beneficial effects of the utility model are as follows: the bag body is formed by the inner bag body parts and the outer bag body parts arranged inside and outside, so that the joint edge is far away from the inner side of the bag body, and the inner side of the bag body that fits the cold and hot compress parts is in an integrated form, thereby ensuring the comfort of the cold and hot compress;
[0046] Because the inside and outside of the bag body are composed of different parts, the inside and outside bag body parts can be in different colors, which increases the richness of the product appearance;
[0047] In addition, because the inner and outer sides of the bag body are composed of different parts, different materials can be used for the inner and outer bag body parts. The inner bag body parts are made of soft materials to ensure comfort. In addition to soft materials, the outer bag body parts can also use hard materials or soft materials with higher hardness. When hard materials or soft materials with higher hardness are used, the shape of the bag body can be made more stable. BRIEF DESCRIPTION OF THE DRAWINGS
[0048] The utility model is further described below in conjunction with the accompanying drawings and embodiments;
[0049] Figure 1 This is a schematic structural diagram of a hot and cold compress water bag in Example 1 of the utility model in a three-dimensional perspective;
[0050] Figure 2 This is a schematic structural diagram of a cold or hot compress water bag in Example 1 of the utility model from a front perspective;
[0051] Figure 3 for Figure 2 AA section view;
[0052] Figure 4 It is a structural schematic diagram of the upper mold of the utility model in a three-dimensional perspective;
[0053] Figure 5 It is a structural schematic diagram of the upper mold of the utility model when viewed from above;
[0054] Figure 6 It is a structural schematic diagram of the lower mold of the utility model in a three-dimensional perspective;
[0055] Figure 7 This is a schematic structural diagram of the middle mold of Example 1 of the utility model;
[0056] Figure 8 This is a schematic structural diagram of a semi-finished product of an inner bag body component of Example 1 of the utility model;
[0057] Fig. 9 This is a schematic structural diagram of a semi-finished outer bag body component of Example 1 of the utility model;
[0058] Fig.10 This is a schematic structural diagram of a bag body to be welded in Example 1 of the utility model;
[0059] Fig.11 It is a structural schematic diagram of the bag body to be welded in Example 1 of the utility model, which is sleeved on the welding seat of the middle mold;
[0060] Fig.12 It is a schematic diagram of the structure of the high-frequency welding mold of Example 1 of the utility model after the mold is closed from a top view;
[0061] Fig.13 for Fig.12 BB cross-sectional view;
[0062] Fig.14 for Fig.13 Enlarged view of point C;
[0063] Fig.15 It is a schematic structural diagram of the high-frequency welding mold of Example 1 of the utility model after the mold is closed from the front view;
[0064] Fig.16 yes Fig.15 DD cross-sectional view;
[0065] Fig.17 yes Fig.16 The enlarged view of point E;
[0066] Fig.18 This is a structural schematic diagram of a small-mouthed hot or cold compress water bag in a three-dimensional perspective according to Embodiment 2 of the present utility model;
[0067] Fig.19 This is a schematic structural diagram of a large-mouthed hot and cold compress water bag in a three-dimensional perspective according to Embodiment 2 of the present utility model;
[0068] Fig. 20 It is a structural schematic diagram of a cold compress ice pack in Example 3 of the utility model in a three-dimensional perspective;
[0069] Fig.21 It is a structural schematic diagram of the middle mold of the first high-frequency welding mold of Example 3 of the utility model;
[0070] Fig. 22 It is a schematic structural diagram of the first high-frequency welding mold of Example 3 of the utility model after the mold is closed from the front view;
[0071] Fig.23 yes Fig. 22 GG cross-sectional view;
[0072] Fig.24 It is a schematic structural diagram of the second high-frequency welding die of Example 3 of the utility model for sealing the two ends of the bag body;
[0073] Fig.25 It is a structural schematic diagram of a cold compress ice pack with a long strip of local concave portion in Example 4 of the utility model under a three-dimensional perspective;
[0074] Fig.26 It is a schematic structural diagram of a cold compress ice pack with a long strip of local concave portion in Example 4 of the utility model from a side view;
[0075] Fig. 27 yes Fig.26 FF cross-sectional view;
[0076] Fig.28 It is a schematic structural diagram of a cold compress ice bag with a circular local depression according to Example 4 of the utility model;
[0077] Fig.29 It is a structural schematic diagram of a hot and cold compress water bag in Example 5 of the utility model in a three-dimensional perspective;
[0078] Fig.30 It is a schematic structural diagram of a cold or hot compress water bag in Example 5 of the utility model from a side view;
[0079] Fig.31 yes Fig.30 GG cross-sectional view;
[0080] Fig.32 yes Fig.31 Enlarged view of H;
[0081] Fig.33 It is a schematic structural diagram of the outer layer component of the inner bag body component of Example 5 of the utility model;
[0082] Fig.34 It is a schematic structural diagram of the inner layer component of the inner bag body component of Example 5 of the utility model;
[0083] Fig.35 It is a structural schematic diagram of a cold and hot compress water bag without an extensional joint edge of the utility model;
[0084] Fig.36It is a schematic diagram of the structure of an existing U-shaped cold and hot compress water bag;
[0085] In the figure, 1. inner bag body component, 1-1. inner layer component, 1-2. outer layer component, 2. outer bag body component, 2-1. local recessed portion, 3. lid, 4. injection port, 5. upper mold, 6. middle mold, 6-1. material cavity, 6-2. welding seat, 7. lower mold, 8. bag body to be welded, 8-1. semi-finished product of inner bag body component, 8-2. semi-finished product of outer bag body component, 9. process reserved edge, 9-1. positioning hole, 10. lid seat, 11. joining edge, 12. side arm, 13. positioning column, 14. clearance hole, 15. welding surface, 16. second upper mold, 17. second lower mold, 18. welding clearance portion, 19. U-shaped bag body part, 20. supporting ribs. DETAILED DESCRIPTION
[0086] Example 1
[0087] like Figures 1 to 3 As shown, a cold or hot compress bag, also known as a cold or hot compress water bag, is used for hanging around the neck, and includes a bag body and a cover 3. The bag body is provided with an injection port 4, and the cover 3 covers the injection port 4 for sealing the injection port 4.
[0088] The bag body of the hot and cold compress water bag is in a U-shape or C-shape as a whole, and comprises an inner bag body part 1, which is located inside the bag body, and the outer surface of the inner bag body part 1 is in an integrated form, and is used to provide an integrated hot and cold compress surface inside the bag body; an outer bag body part 2, which is located outside the bag body, and the edge of the inner bag body part 1 and the edge of the outer bag body part 2 are sealed together to form a bag body cavity between the inner bag body part 1 and the outer bag body part 2. The edge of the inner bag body part 1 and the edge of the outer bag body part 2 are sealed together to form a joint edge 11.
[0089] In this embodiment 1, specifically, the inner bag body part 1 and the outer bag body part 2 are both single-layer structures, and the inner bag body part 1 and the outer bag body part 2 are both in an integral form, so an integral outer surface can be provided on both the inside and outside of the bag body.
[0090] The inner bag body part 1 and the outer bag body part 2 are arranged in layers relative to the inside and outside of the bag body, and the edges of the inner bag body part 1 and the edges of the outer bag body part 2 extend toward the outside of the bag body, so that the edges of the inner bag body part 1 and the edges of the outer bag body part 2 are sealed together by the edge of the inner bag body part 1 being sleeved outside the edge of the outer bag body part 2, forming a joint edge 11. The outer surface of the inner bag body part 1 extends from the inside of the bag body to the outside, forming a cold and hot compress neck cold and hot compress surface of the bag body, and the outer bag body part is located away from the outside of the neck, so as to make the joint edge as far away as possible from the cold and hot compress part, i.e., the human body.
[0091] The hot and cold compress bags of the present invention, including the hot and cold compress water bag of the present embodiment 1, can be used for cold and hot compresses on the neck as well as on the limbs of the human body. Of course, hot and cold compress bags specifically for cold and hot compresses on specific parts of the body can also be developed. Without changing the overall shape of the hot and cold compress bags of the present invention, the outer contour and size of the hot and cold compress bags can be adaptively adjusted to suit specific parts of the human body, which also falls within the scope of protection of the present invention.
[0092] In this embodiment 1, the connection part of the side arms 12 on both sides of the bag body is the top of the bag body, and the opening parts of the side arms 12 on both sides are the bottom of the bag body. The surface of the bag body is divided into an inner side surface, an outer side surface, a front surface, a rear surface and end surfaces at both ends. The front surface is a surface located in front of the inner side surface and the outer side surface, the rear surface is a surface located behind the inner side surface and the outer side surface, and the end surfaces at both ends are surfaces located at both ends of the inner side surface and the outer side surface. The outer bag body component 2 constitutes the outer side surface of the bag body, the bonding edge 11 surrounds the outer side surface of the bag body, and the inner bag body component 1 constitutes the inner side surface, front surface, rear surface and end surfaces at both ends of the bag body.
[0093] like Figure 3 As shown, the cross section of the inner bag body part 1 is specifically U-shaped or C-shaped.
[0094] The injection port 4 is located on the outer side of the bottom end of the side arm 12, and the injection port 4 has a cover seat 10 for threaded cooperation with the cover 3. Fig. 9 Since the outer bag body part 2 constitutes the outer side surface of the bag body, the injection port 4 is also located at the end of the outer bag body part 2.
[0095] The hot and cold compress water bag of the present embodiment 1 can be injected with hot water through the injection port 4 for hot compress, so it is also called a hot water bag, and can also be injected with ice water through the injection port 4 for cold compress. By expanding the outer contour of the end of the side arm 12 and its vicinity, the shape of the hot and cold compress water bag is made similar to a headphone. The outer side surface of the bottom end of the side arm 12 can be designed with a large injection port 4 to facilitate the injection of ice water containing ice. Because the bottom end of the side arm 12 is located at the front of the neck, the shape of the hot and cold compress water bag similar to the appearance of a headphone will not affect the user experience.
[0096] Because the inner and outer sides of the bag body are composed of two parts, the inner bag body part 1 and the outer bag body part 2 can be made of different materials. The inner bag body part 1 is made of soft materials to ensure comfort. In addition to soft materials, the outer bag body part 2 can also be made of hard materials or soft materials with higher hardness. When hard materials or soft materials with higher hardness are used, the shape of the bag body can be more stable.
[0097] In this embodiment 1, the materials of the inner bag body part 1 and the outer bag body part 2 are both PVC. The material of the inner bag body part 1 can also be rubber or silicone, and the material of the outer bag body part 2 can also be rubber, hard plastic or silicone.
[0098] PVC is a soft material, and the cover 3 is a hard material, so in order to reliably seal the injection port 4, a cover seat 10 made of a hard material is also required inside the injection port 4. However, when the injection port is located on the outer bag body part 2 which can be made of hard plastic, the additional cover seat 10 is not required, and an internal thread structure that matches the thread of the cover 3 can be directly formed in the injection port 4, and the injection port 4 can be reliably sealed after the cover 3 is tightened.
[0099] The edges of the inner bag body part 1 and the outer bag body part 2 can be combined together by welding or gluing. In addition to high-frequency welding, welding also includes other welding methods, such as hot pressing welding. The edges of the inner bag body part 1 and the edges of the outer bag body part 2 are designed to face the outside of the bag body, so that the connecting edge 11 also protrudes to the outside of the bag body. Even if the width of the protruding connecting edge 11 is larger as in the present embodiment 1, it will not cause discomfort to the neck. At the same time, the inner bag body part 1 and the outer bag body part 2 are arranged in layers relative to the inside and outside of the bag body, and the extension directions of the edges of the inner bag body part 1 and the outer bag body part 2 are consistent, and the design of both facing the outside of the bag body is also more conducive to the subsequent high-frequency welding through the high-frequency welding mold of this embodiment 1.
[0100] The colors of the inner bag body part 1 and the outer bag body part 2 can be the same or different, which increases the richness of the product appearance.
[0101] like Figures 4 to 17 As shown, a high-frequency welding mold is used to perform high-frequency welding on a bag body 8 to be welded. After high-frequency welding, the bag body 8 to be welded is trimmed as needed to obtain the bag body of the hot and cold compress bag of this embodiment 1. The bag body 8 to be welded is assembled from various bag body parts of the bag body of the hot and cold compress bag, or assembled from various semi-finished bag body parts of the bag body of the hot and cold compress bag; each semi-finished bag body part is a bag body part that continues to extend outward on the basis of the edge of each bag body part to serve as a process reserved edge 9. The high-frequency welding mold includes an upper mold 5, a middle mold 6 and a lower mold 7 arranged from top to bottom. The middle mold 6 has a material cavity 6-1 therein for accommodating the bag body 8 to be welded in a flat state. As shown Figure 7 and 11As shown, the inner side of the middle mold 6 surrounding the material cavity 6-1 is provided with a welding seat 6-2, which is used to allow the edges of each bag body part or each bag body part semi-finished product of the bag body 8 to be welded to be sleeved on the welding seat 6-2, and the welding seat 6-2 is provided with a welding surface 15, and the upper mold 5 and the lower mold 7 are also provided with welding surfaces 15. The welding surface 15 on the upper mold 5 is used to cooperate with the welding surface 15 on the upper half of the welding seat 6-2, and the welding surface 15 on the lower mold 7 is used to cooperate with the welding surface 15 on the lower half of the welding seat 6-2, and the edges sandwiched between the welding surfaces 15 are welded. In this embodiment 1, all the edges around the inner bag body part 1 and the outer bag body part 2 are edges to be welded, and are all sandwiched between the welding surfaces 15 for welding.
[0102] The bag body 8 to be welded is subjected to high-frequency welding by the above-mentioned high-frequency welding mold to realize the combination of the edges of the bag body components. After trimming as needed, the bag body of the hot and cold compress bag of this embodiment 1 which can be used as a finished product is obtained.
[0103] The bag body 8 to be welded can be specifically assembled from the inside and outside of the inner bag body component 1 and the outer bag body component 2, and the bag body of the hot and cold compress bag that can be used as a finished product can be directly obtained after high-frequency welding, or as shown in 8 to 11, it can be assembled from the inside and outside of the inner bag body component semi-finished product 8-1 and the outer bag body component semi-finished product 8-2, and the inner bag body component semi-finished product 8-1 and the outer bag body component semi-finished product 8-2 are bag body components that extend outward from the inner bag body component 1 and the outer bag body component 2 to form a process reserved edge 9, such as Figure 8 and 9 As shown, the edge outside the dotted line is the process reserved edge 9. The bag body 8 to be welded, which is assembled from the inner bag body component semi-finished product 8-1 and the outer bag body component semi-finished product 8-2, is high-frequency welded and then trimmed to obtain a bag body that can be used as a finished product.
[0104] like Fig.13 , 14 As shown in FIGS. 16 and 17 , the welding surface 15 on the upper mold 5 is used to cooperate with the welding surface 15 on the upper half of the welding seat 6-2, and the welding surface 15 on the lower mold 7 is used to cooperate with the welding surface 15 on the lower half of the welding seat 6-2 to weld the edges sandwiched between the welding surfaces 15.
[0105] Specifically, the upper mold 5 and the lower mold 7 are connected to one pole of the high-frequency welding equipment, and the middle mold 6 is connected to the other pole of the high-frequency welding equipment.
[0106] The main function of the process reserved edge 9 is: when the bag body parts are assembled and welded, there may be misalignment. The process reserved edge 9 can be used as a margin. After the welding is completed, the excess process reserved edge 9 can be cut off by trimming to ensure that the combined edge 11 is flush. In addition, the process reserved edge 9 allows the edge to be welded to have sufficient width to ensure the welding quality. In addition, the positioning structure on the process reserved edge 9 can be used to position the semi-finished bag body parts during welding to minimize misalignment.
[0107] like Figure 8 and 9 As shown, in the present invention, the positioning structure on the process reserved edge 9 is specifically a positioning hole 9-1 on the process reserved edge 9, such as Fig.11 As shown, the outer bag body component semi-finished product 8-2 and the inner bag body component semi-finished product 8-1 are welded and positioned by the positioning column 13 that passes through the positioning hole 9-1 and is inserted into the middle mold 6. Figure 4 , 5 As shown in Figure 6, the upper die 5 and the lower die 7 are provided with clearance holes 14 for the clearance positioning columns 13.
[0108] Of course, it is not excluded to adopt other positioning structures or positioning methods for welding positioning. For example, no positioning hole 9-1 is designed on the process reserved edge 9, but the friction between the edges to be welded of the bag body 8 to be welded and the welding seat 6-2 tightly sleeved on the middle mold 6, and the friction between the edges to be welded replace the positioning hole 9-1 and the positioning column 13 for the positioning of the bag body 8 to be welded. Accordingly, the positioning column 13 inserted on the middle mold 6 and the clearance holes 14 on the upper mold 5 and the lower mold 7 are also unnecessary.
[0109] The following describes the production method of the hot and cold compress bag of the present embodiment 1 by taking the example of combining the edges of the inner bag body part 1 and the outer bag body part 2 together by high-frequency welding.
[0110] A method for producing a bag body for a hot or cold compress bag, firstly, an inner bag body component semi-finished product 8-1 and an outer bag body component semi-finished product 8-2 are injection molded; then, the outer bag body component semi-finished product 8-2 and the inner bag body component semi-finished product 8-1 are successively placed in the above-mentioned high-frequency welding mold of this embodiment 1 to assemble the bag body 8 to be welded and then perform high-frequency welding; then, trimming is performed to remove excess process reserved edges 9.
[0111] More specifically, the inner bag body component semi-finished product 8-1 and the outer bag body component semi-finished product 8-2 are bag body components that extend outward from the inner bag body component 1 and the outer bag body component 2 to form a process reserved edge 9, and the process reserved edge 9 has a positioning hole 9-1. The outer bag body component semi-finished product 8-2 and the inner bag body component semi-finished product 8-1 are welded and positioned by a positioning column 13 that passes through the positioning hole 9-1 and is inserted into the middle mold 6.
[0112] When the outer bag body component semi-finished product 8-2 is injected by the injection mold, the cover seat 10 in the injection port 4 is placed in the injection mold in advance, and is combined with the injection port 4 when the outer bag body component semi-finished product 8-2 is injected. When the outer bag body component semi-finished product 8-2 is hard plastic, the cover seat 10 is no longer needed in the injection port 4, and the injection port 4 with threads can be directly obtained by injection molding by the injection mold.
[0113] Example 2
[0114] like Fig.18 and 19 As shown, a cold or hot compress bag, also known as a cold or hot compress water bag, is basically the same as the cold or hot compress bag of Example 1, with the difference that: the injection port 4 is located at the top of the bag body, and the top of the bag body is on the outer side of the bag body, so the injection port 4 is also located in the middle position of the outer bag body part 2 constituting the outer side of the bag body.
[0115] The hot and cold compress water bag of the present embodiment 2 can also be filled with hot water for hot compress or with ice water for cold compress. Compared with the embodiment 1, the injection port 4 is arranged at the top of the bag body to prevent hot water from splashing out when water is injected.
[0116] Fig.18 The injection port 4 of the hot and cold compress water bag shown in the figure is a small opening, and the diameter of the cover 3 is also small. Because the diameter of the injection port 4 is small, no protrusions are formed on the front and rear surfaces of the hot and cold compress water bag. However, the small injection port 4 is not convenient for injecting ice water containing ice.
[0117] Therefore, this embodiment 2 also designs a large-mouthed cold and hot compress water bag, such as Fig.19 As shown, the injection port 4 is a large mouth and the diameter of the cover 3 is also large, which is convenient for injecting ice water containing ice. However, due to the large diameter of the injection port 4, protrusions will be formed on the front and rear surfaces of the hot and cold compress water bag.
[0118] Example 3
[0119] like Fig. 20As shown, a cold and hot compress bag, also called a cold compress ice bag, is basically the same as the cold and hot compress water bag of Example 1, except that the inner cavity of the bag body is filled with a phase change material. Because the phase change material in the cold compress ice bag can be used repeatedly, it is generally not necessary for the user to fill or replace it by themselves. Therefore, the cold compress ice bag of Example 3 does not need to be designed with the injection port 4 and the cover 3 of Example 1 for users to inject liquid by themselves, that is, the bag body is a fully enclosed bag body without the injection port 4.
[0120] Of course, it is not excluded that the phase change material may be directly filled into the hot and cold compress water bags in Examples 1 and 2 to form cold compress ice bags.
[0121] The bag body in Example 2 can be produced by one-time high-frequency welding of the bag body using a high-frequency welding mold designed in the same way as in Example 1, and the bag body can be produced using the same production method for hot and cold compress bags as in Example 1.
[0122] However, the bag body of the present embodiment 3 is not provided with any injection port 4 or filling hole. In order to fill the phase change material in the bag body before leaving the factory, the bag body of the present embodiment 3 chooses to adopt a two-pass high-frequency welding method to produce the bag body. In the first pass of high-frequency welding, a section of the edge of the bag body 8 to be welded is left unwelded, making it a filling port for filling the phase change material. After the filling is completed, another high-frequency welding process is performed to seal the filling port.
[0123] Preferably, during the first high-frequency welding, the edge that is left unwelded is the edge at the bottom of the end area of the side arm 12. More preferably, the edge at the bottom of the end area of the side arms 12 on both sides are left unwelded, forming an opening at both ends of the bag body, one of which can be used as a filling port and the other as a vent.
[0124] like Figures 21 to 23 As shown, the first high-frequency welding mold used for the first high-frequency welding of the bag body of this embodiment 3 is basically the same as the high-frequency welding mold of embodiment 1, with the difference that the welding surface 15 corresponding to the non-welded edges on the welding seat 6-2 of the middle mold 6 is omitted, so that these edges can be non-welded during the first high-frequency welding.
[0125] Of course, the welding surfaces 15 of the corresponding non-welded edges on the upper mold 5 and the lower mold 7 can also be omitted to achieve non-welding of these edges during the first high-frequency welding.
[0126] like Fig.21 and 23As shown, in the present embodiment 3, a portion of both ends of the welding seat 6-2 of the middle mold 6 is removed inward to form a welding clearance portion 18, so that the end of the welding seat 6-2 does not have the welding surface 15 required for welding, and a section of the edge of the end area of the side arms 12 on both sides is left unwelded.
[0127] like Fig.24 The structure of the second high-frequency welding mold used for the second high-frequency welding of the present embodiment 3 is shown. Only a second upper mold 16 and a second lower mold 17 are required. The welding surfaces 15 on the second upper mold 16 and the second lower mold 17 have the same curvature as the edges left unwelded. The second high-frequency welding mold is used to weld the openings at both ends of the bag body twice to achieve sealing.
[0128] The production method of the cold compress ice bag of the present embodiment 3 is as follows: first, the inner bag body component semi-finished product 8-1 and the outer bag body component semi-finished product 8-2 are injection molded by an injection mold; then the inner bag body component semi-finished product 8-1 and the outer bag body component semi-finished product 8-2 are placed in the first high-frequency welding mold used in the present embodiment 3 for the first high-frequency welding, and most of the edges of the inner bag body component 1 and the outer bag body component 2 are combined together, leaving only two openings at the two ends of the bag body; the phase change material is filled through one of the filling ports; after the phase change material is filled, the openings at both ends of the bag body are welded twice by the second high-frequency welding mold of the present embodiment 3 to achieve sealing; then, the edges are trimmed to remove the excess process reserved edges 9 to obtain the cold compress ice bag of the present embodiment 3.
[0129] Example 4
[0130] like Figures 25 to 28 As shown, a hot and cold compress bag, also known as a cold compress ice bag, is basically the same as the cold compress ice bag of Example 3, except that: the bag body inner cavity formed by the inner bag body part 1 and the outer bag body part 2 also has at least one supporting structure for supporting the bag body inner cavity, and the supporting structure is specifically a local recessed portion 2-1 of the outer bag body part 2 that is recessed toward the inner bag body part 1, and the top of the local recessed portion 2-1 is against the inner bag body part 1. Preferably, the top of the local recessed portion 2-1 is combined with the inner bag body part 1 to form a whole. Of course, it is not ruled out that it plays a supporting role through contact cooperation.
[0131] The local recessed portions 2-1 are circular or strip-shaped and are evenly distributed on the outer bag body component 2, or are only arranged at locations that are easily deformed.
[0132] like Fig.25 , 26As shown in FIG. 27 , there are two long strip-shaped local recessed portions 2-1 on the outer bag body part 2 of the bag body. The long strip-shaped local recessed portions 2-1 extend along the length direction of the outer bag body part 2. Fig.28 As shown, there are two circular local recessed portions 2 - 1 on the side arms 12 on both sides of the outer bag body part 2 of the bag body, and a total of four circular local recessed portions 2 - 1.
[0133] The top of the local recessed portion 2 - 1 on the outer bag body part 2 and the inner bag body part 1 can be combined together specifically by high-frequency welding.
[0134] Example 5
[0135] like Figures 29 to 34 As shown, a hot and cold compress bag, which is also called a hot and cold compress water bag, is basically the same as the hot and cold compress water bag of Example 2, except that: the inner bag body part 1 is a double-layer structure with an internal hollow cavity, including an inner layer part 1-1 and an outer layer part 1-2, and the outer bag body part 2 is a single-layer structure, the outer layer part 1-2, the inner layer part 1-1 and the outer bag body part 2 are all in an integrated form, the outer layer part 1-2, the inner layer part 1-1 and the outer bag body part 2 are arranged in layers relative to the inside and outside of the bag body, and the edges of the outer layer part 1-2, the inner layer part 1-1 and the outer bag body part 2 extend in the same direction, all toward the outside of the bag body, and the edges of the outer layer part 1-2, the inner layer part 1-1 and the outer bag body part are sealed together. The internal hollow cavity can utilize the characteristics of poor thermal conductivity of air to avoid overheating or overcooling during hot or cold compress.
[0136] The inner hollow compartment of the inner bag body component 1 has at least one supporting structure for supporting the inner hollow compartment. The specific number is reasonably selected according to the support requirements and the specific structure of the supporting structure. The supporting structure is located on the inner layer component 1-1, and the supporting structure is specifically a supporting rib 20.
[0137] The supporting structure may also be arranged on the outer layer component 1 - 2 , and of course, may also be arranged on both the inner layer component 1 - 1 and the outer layer component 1 - 2 .
[0138] The bag body in this embodiment 5 can also use the high-frequency welding mold of embodiment 1 to perform high-frequency welding of the bag body.
[0139] A production method for the bag body of the cold and hot compress bag of this embodiment 5 is: first, the inner layer component semi-finished product, the outer layer component semi-finished product and the outer layer component semi-finished product 8-2 of the inner bag body component 1 are injection molded; then the outer layer component semi-finished product 8-2, the outer layer component semi-finished product and the inner layer component semi-finished product of the inner bag body component 1 are placed successively into the high-frequency welding mold of the cold and hot compress bag mentioned above in this embodiment 1 to assemble them into the bag body 8 to be welded and then perform high-frequency welding; then, trimming is performed to remove the excess process reserved edge 9.
[0140] The inner layer component semi-finished product and the outer layer component semi-finished product of the inner bag body component 1 are bag body components that extend outwardly from the inner layer component 1-1 and the outer layer component 1-2 of the inner bag body component 1 to form a process reserved edge 9. Positioning holes 9-1 can also be set on the process reserved edge 9 as needed for welding positioning.
[0141] The width of the protruding joint edge 11 of the bag body of the cold and hot compress bag in the above-mentioned embodiments 1 to 5 is relatively large. In fact, in the above-mentioned embodiments 1 to 5, when cutting the edges, on the basis of ensuring the sealing reliability of the joint edge 11, as much of the joint edge as possible can be cut off to form a joint edge 11 that does not protrude from the bag body as much as possible, such as Fig.35 shown.
[0142] The bag body of the hot and cold compress bag in the above-mentioned embodiments 1 to 5 can also be used as the bag body of an electric hot water bag. The electric hot water bag is basically the same as the hot and cold compress water bag in embodiment 1, except that: in addition to the bag body, it also includes an electric heating device and a socket. The inner bag body part 1 or the outer bag body part 2 of the bag body has a socket opening, and the socket is installed in the bag body through the socket opening. The socket is electrically connected to the electric heating device, and the electric heating device is distributed in the bag body to heat the liquid filled in the bag body.
[0143] Because the liquid filled in the bag body of the electric hot water bag generally does not need to be filled or replaced by the user, the electric hot water bag does not need to be provided with the injection port 4 and the cover 3 in Example 1 for the user to inject the liquid by himself. Instead, the liquid in the bag body of the electric hot water bag is filled in the factory through a hidden filling hole provided on the socket.
[0144] The hot and cold compress water bag, electric hot water bag and cold compress ice bag in the utility model all belong to the hot and cold compress bags.
Claims
1. A bag body of a hot or cold compress bag, characterized in that: The overall shape is U-shaped or C-shaped, including: An inner bag body component (1), the inner bag body component (1) is located inside the bag body, and the outer surface of the inner bag body component (1) is in an integrated form; An outer bag body part (2), the outer bag body part (2) is located on the outside of the bag body, and the edge of the inner bag body part (1) and the edge of the outer bag body part (2) are sealed together to form a bag body inner cavity between the inner bag body part (1) and the outer bag body part (2).
2. The bag body of the hot and cold compress bag according to claim 1 is characterized by: The inner bag body part (1) and the outer bag body part (2) are arranged in layers relative to the inside and outside of the bag body, and the edges of the inner bag body part (1) and the edges of the outer bag body part (2) both extend toward the outside of the bag body.
3. The bag body of the hot or cold compress bag according to claim 1 is characterized by: The inner bag body component (1) is a single-layer structure or a multi-layer structure, and the outer bag body component (2) is a single-layer structure or a multi-layer structure. Each layer of bag body components is in an integrated form, and each layer of bag body components is arranged in layers relative to the inside and outside of the bag body. The edges of each layer of bag body components extend toward the outside of the bag body, and the edges of each layer of bag body components are sealed together.
4. The bag body of the hot or cold compress bag according to claim 1 is characterized by: The connecting part of the side arms (12) on both sides of the bag body is the upper part of the bag body, and the opening part of the side arms (12) on both sides of the bag body is the lower part of the bag body. The surface of the bag body is divided into an inner side surface, an outer side surface, a front surface, a rear surface and end surfaces at both ends. The front surface is a surface located in front of the inner side surface and the outer side surface, the rear surface is a surface located behind the inner side surface and the outer side surface, and the end surfaces at both ends are surfaces located at both ends of the inner side surface and the outer side surface. The outer bag body component (2) constitutes the outer side surface of the bag body. The edges of the inner bag body component (1) and the outer bag body component (2) are sealed together to form a joint edge (11) surrounding the outer side surface of the bag body. The inner bag body component (1) constitutes the inner side surface, front surface, rear surface and end surfaces at both ends of the bag body.
5. The bag body of the hot or cold compress bag according to claim 4 is characterized by: The cross section of the inner bag body component (1) is U-shaped or C-shaped.
6. The bag body of the hot or cold compress bag according to claim 1 is characterized by: The inner bag body part (1) and the outer bag body part (2) are both single-layer structures, and the inner cavity of the bag body has at least one supporting structure for supporting the inner cavity of the bag body, and the supporting structure is specifically a local recessed portion (2-1) of the outer bag body part (2) recessed toward the inner bag body part (1), and the top of the local recessed portion (2-1) abuts against the inner bag body part (1) and is combined with the inner bag body part (1) to form a whole, or only contact and cooperate.
7. The bag body of the hot or cold compress bag according to claim 6 is characterized by: The local recessed portion (2-1) is circular or elongated.
8. The bag body of the hot or cold compress bag according to claim 1 is characterized by: The material of the inner bag body part (1) is rubber, PVC or silicone, and the material of the outer bag body part (2) is rubber, PVC, hard plastic or silicone.
9. The bag body of the hot or cold compress bag according to claim 1 is characterized by: The inner bag body component (1) is a double-layer structure with an internal hollow compartment, comprising an inner layer component (1-1) and an outer layer component (1-2); The outer bag body component (2) is a single-layer structure; The outer layer component (1-2), the inner layer component (1-1) and the outer bag body component (2) are all in an integrated form; the outer layer component (1-2), the inner layer component (1-1) and the outer bag body component (2) are arranged in layers relative to the inside and outside of the bag body; and the edges of the outer layer component (1-2), the inner layer component (1-1) and the outer bag body component (2) are sealed together.
10. The bag body of the hot or cold compress bag according to claim 9, characterized in that: The inner hollow compartment of the inner bag body component (1) has at least one supporting structure for supporting the inner hollow compartment. The supporting structure is located on the inner layer component (1-1) and / or the outer layer component (1-2). The supporting structure is specifically a supporting rib (20).
11. A hot and cold compress water bag, characterized in that: It comprises a bag body and a cover (3); The bag body is in a U-shape or a C-shape as a whole, and comprises an inner bag body part (1) and an outer bag body part (2); the inner bag body part (1) is located on the inner side of the bag body, and the outer surface of the inner bag body part (1) is in an integrated form; the outer bag body part (2) is located on the outer side of the bag body; the edge of the inner bag body part (1) and the edge of the outer bag body part (2) are sealed together to form an inner bag body cavity between the inner bag body part (1) and the outer bag body part (2); The inner bag body part (1) or the outer bag body part (2) has an injection port (4), and the cover (3) covers the injection port (4).
12. The hot and cold compress water bag according to claim 11, characterized in that: The injection port (4) is provided with a cover seat (10) for threadedly cooperating with the cover (3).
13. The hot and cold compress water bag according to claim 11, characterized in that: The injection port (4) is located at the top of the bag body; or the injection port (4) is located at the outer side surface of the bottom end of one side arm (12).
14. An electric hot water bag, characterized by: It includes a bag body, an electric heating device and a socket; The bag body is in a U-shape or a C-shape as a whole, and comprises an inner bag body part (1) and an outer bag body part (2); the inner bag body part (1) is located on the inner side of the bag body, and the outer surface of the inner bag body part (1) is in an integrated form; the outer bag body part (2) is located on the outer side of the bag body; the edge of the inner bag body part (1) and the edge of the outer bag body part (2) are sealed together to form an inner bag body cavity between the inner bag body part (1) and the outer bag body part (2); The inner bag body part (1) or the outer bag body part (2) has a socket opening, the socket is installed in the bag body through the socket opening, the socket is electrically connected to the electric heating device, and the electric heating device is distributed in the bag body cavity and is used to heat the liquid filled in the bag body cavity.
15. A cold compress ice pack, characterized by: Including bag body and phase change material, The bag body is in a U-shape or a C-shape as a whole, and comprises an inner bag body part (1) and an outer bag body part (2); the inner bag body part (1) is located on the inner side of the bag body, and the outer surface of the inner bag body part (1) is in an integrated form; the outer bag body part (2) is located on the outer side of the bag body; the edge of the inner bag body part (1) and the edge of the outer bag body part (2) are sealed together to form an inner bag body cavity between the inner bag body part (1) and the outer bag body part (2); The phase change material is filled in the inner cavity of the bag body.
16. The cold compress ice pack according to claim 15, characterized in that: The bag body is a fully enclosed bag body.
17. A high frequency welding die, characterized in that: The bag body (8) to be welded is subjected to high-frequency welding, and the bag body (8) to be welded is trimmed as needed after high-frequency welding to obtain the bag body of the hot or cold compress bag according to claim 1, The bag body (8) to be welded is assembled from the bag body parts of the cold or hot compress bag, or assembled from the semi-finished bag body parts of the cold or hot compress bag; each semi-finished bag body part is a bag body part that continues to extend outward from the edge of each bag body part as a process reserved edge (9). The invention comprises an upper mold (5), a middle mold (6) and a lower mold (7) arranged from top to bottom, wherein the middle mold (6) has a material cavity (6-1) therein for accommodating a bag body (8) to be welded in a flat state, and the inner side of the middle mold (6) surrounding the material cavity (6-1) has a welding seat (6-2) for allowing the edges of each bag body component or each bag body component semi-finished product of the bag body (8) to be welded to be sleeved on the welding seat (6-2), and the welding seat (6-2) The upper mold (5) and the lower mold (7) also have welding surfaces (15). The welding surface (15) on the upper mold (5) is used to cooperate with the welding surface (15) on the upper part of the welding seat (6-2), and the welding surface (15) on the lower mold (7) is used to cooperate with the welding surface (15) on the lower part of the welding seat (6-2), so as to weld the edges sandwiched between the welding surfaces (15).