Seamless quilt, seamless quilt manufacturing process and production apparatus

Abstract

Disclosed in the present application are a seamless quilt, a seamless quilt manufacturing process and a production apparatus. The seamless quilt comprises an upper layer, a lower layer, and a core material enclosed between the upper layer and the lower layer, wherein the upper layer and the lower layer are provided with several corresponding predetermined areas, and the upper layer and the lower layer are connected and fixed through the core material at said predetermined areas. The present application relates to the product form of a seamless quilt; by means of the provision of predetermined areas, the upper layer and the lower layer of the quilt are connected and fixed through the internal core material at the predetermined areas, thereby limiting the core material and preventing the core material from moving; this is particularly suitable for prefabricated integrated core materials, which are less prone to movement.

Description

A seamless quilt, a seamless quilt manufacturing process and manufacturing apparatus Technical Field

[0001] This application discloses a seamless quilt, a seamless quilt manufacturing process and a manufacturing apparatus, relating to the field of home furnishing product technology. Background Technology

[0002] Quilts are common household products. Conventional quilts use stitching to fix the quilt material and internal core materials such as fillings. With long-term use, the needle holes will inevitably enlarge, causing the filling to leak out or dust to get in.

[0003] To improve user experience and lifespan, the industry has developed seamless quilt products. The quilt material and internal core are fixed together using seamless methods such as adhesive bonding, welding, and ultrasonic welding. Because this seamless quilt design requires a seamless fixing method, the top and bottom layers often have to be fixed to the filling material in the middle section, as seen in Chinese patent CN202775408U, entitled "A Seamless Quilt with Iron-on Printed Finish." This results in the remaining filling material not fixed to the top and bottom layers lacking restraint and easily shifting. Summary of the Invention

[0004] The technical problems to be solved by this application are seamless processing and internal core material limitation.

[0005] To solve the above-mentioned technical problems, the technical solution of this application is to provide a seamless material, including an upper layer, a lower layer and a core material wrapped between the upper layer and the lower layer; the upper layer and the lower layer are provided with a number of corresponding predetermined areas, and the upper layer and the lower layer are connected and fixed through the core material in the predetermined areas.

[0006] Preferably, the edges of the upper layer and the lower layer are fixedly connected to enclose the core material.

[0007] Preferably, the core material is a prefabricated integral core material.

[0008] Furthermore, the core material has perforations corresponding to the predetermined area, and the upper layer and the lower layer are connected and fixed through the perforations in the predetermined area to form a connecting part, which is used to limit the core material.

[0009] Furthermore, it includes multi-layer composite layers; the multi-layer composite layers are made of materials with different elasticity, or different breathability, or different heat retention, or different loft.

[0010] Optionally, the inner side of the lower layer facing the upper layer is coated with adhesive in the predetermined area, and the upper layer and the lower layer are glued and fixed in the predetermined area.

[0011] The technical solution of this application also provides a gluing roller for manufacturing a seamless quilt, the seamless quilt including an upper layer, a lower layer, and a core material wrapped between the upper layer and the lower layer; the upper layer and the lower layer are provided with a plurality of corresponding predetermined areas, the lower layer is glued with glue in the predetermined areas by the gluing roller, and the upper layer and the lower layer are bonded and fixed through the core material in the predetermined areas; the gluing roller is provided with a glue storage cavity inside, and a plurality of glue outlet areas are opened on the outer peripheral surface of the gluing roller; the unfolded length of the outer peripheral surface of the gluing roller matches the specifications of the lower layer, and the distribution of the glue outlet areas relative to the outer peripheral surface of the gluing roller matches the distribution of the predetermined areas relative to the lower layer; the gluing roller rotates around its own main axis, and the lower layer is conveyed through from the edge of the gluing roller.

[0012] Preferably, the glue-applying roller is provided with a pressure roller, which is eccentrically arranged with the glue-applying roller. At the contact position between the glue-applying roller and the lower layer, the outer wall of the pressure roller is attached to the inner wall of the glue-applying roller.

[0013] Preferably, the glue-applying roller is configured as a sleeve structure, including an outer rotating cylinder and an inner fixed cylinder. The outer rotating cylinder is connected to a drive spindle at one end of the glue-applying roller, and the inner fixed cylinder is connected to a fixing frame at the other end of the glue-applying roller. The inner fixed cylinder has a C-shaped cross-section, with the C-shaped opening facing the direction in which the glue-applying roller contacts the lower layer. The inner fixed cylinder has closed end faces at both ends, and the closed end faces, the inner fixed cylinder, and the outer rotating cylinder define a closed glue storage cavity. A positive pressure connection port is provided on the closed end face near the fixing frame, and the positive pressure connection port is connected to a positive pressure device to provide positive pressure to the glue storage cavity.

[0014] Furthermore, the glue-applying roller is connected to a glue delivery pipe, which is externally connected to a glue injection device and extends inward to a glue storage chamber. The portion of the glue delivery pipe located inside the glue-applying roller has a glue injection port.

[0015] Furthermore, the glue injection nozzles are arranged in an array along the length of the glue coating roller.

[0016] Preferably, the adhesive dispensing area is covered with a mesh structure.

[0017] Preferably, a fixed scraper is also provided on the outer wall of the glue-applying roller, with the scraper located in the latter half of the rotation direction of the glue-applying roller, starting from the contact position between the glue-applying roller and the lower layer.

[0018] The technical solution of this application also provides a seamless fabrication process. The seamless fabric to be fabricated includes an upper layer, a lower layer, and a core material wrapped between the upper layer and the lower layer. The upper layer and the lower layer are provided with a number of corresponding predetermined areas. The lower layer is coated with adhesive in the predetermined areas. The upper layer and the lower layer are bonded and fixed through the core material in the predetermined areas.

[0019] Includes the following steps:

[0020] S1. Adhesive is applied to a predetermined area of ​​the lower layer using an adhesive roller. The adhesive roller has an internal adhesive storage chamber and several adhesive dispensing areas on its outer circumferential surface. The unfolded length of the outer circumferential surface of the adhesive roller matches the specifications of the lower layer, and the distribution of the adhesive dispensing areas relative to the outer circumferential surface of the adhesive roller matches the distribution of the predetermined areas relative to the lower layer. The adhesive roller rotates around its own main axis, and the lower layer passes through the edge of the adhesive roller via a conveyor. The adhesive roller applies adhesive to all predetermined areas by rolling around the lower layer for one revolution.

[0021] S2. The core material is placed in a non-pre-defined area on the lower layer;

[0022] S3. The upper layer covers the core material and the lower layer, and the upper layer is pressed down so that the upper layer and the lower layer pass through the core material and are bonded and fixed in the predetermined area.

[0023] Preferably, the upper and lower layers are made of continuous fabric and stored in roll form. The upper and lower layers are continuously fed by a conveyor belt or conveyor rollers. The lower layer is conveyed and passes under the glue-coating roller for glue application. The glued lower layer continues to be conveyed forward. The core material is a one-piece core material made of continuous fabric. Behind the glue-coating roller station, the one-piece core material is aligned and stacked with the lower layer by positioning. The upper layer is also aligned and covers the surface of the one-piece core material to form a three-layer synchronous conveying.

[0024] The technical solution of this application also provides another seamless fabrication process. The seamless fabric to be fabricated includes an upper layer, a lower layer, and a core material wrapped between the upper layer and the lower layer. The upper layer and the lower layer are provided with a number of corresponding predetermined areas. The lower layer is coated with adhesive in the predetermined areas. The upper layer and the lower layer are bonded and fixed through the core material in the predetermined areas.

[0025] Includes the following steps:

[0026] S1. Adhesive is applied to a predetermined area of ​​the lower layer using an adhesive roller. The adhesive roller has an internal adhesive storage chamber and several adhesive dispensing areas on its outer circumferential surface. The unfolded length of the outer circumferential surface of the adhesive roller matches the specifications of the lower layer, and the distribution of the adhesive dispensing areas relative to the outer circumferential surface of the adhesive roller matches the distribution of the predetermined areas relative to the lower layer. The adhesive roller rotates around its own main axis, and the lower layer passes through the edge of the adhesive roller via a conveyor. The adhesive roller applies adhesive to all predetermined areas by rolling around the lower layer for one revolution.

[0027] S2. Leave a filling opening at the edge of the seamless quilt, cover the lower layer with the upper layer, press down the upper layer to make the upper layer and the lower layer bond and fix them in the predetermined area, while avoiding the upper layer and the lower layer at the filling opening position from bonding and fixing them, thereby leaving a filling opening.

[0028] S3. Fill the layer between the top and bottom layers from the filling port;

[0029] S4. After filling with down, seal the down filling port.

[0030] Preferably, the upper and lower layer materials are continuous fabrics stored in rolls. The upper and lower layers are continuously fed by a conveyor belt or conveyor rollers. The lower layer is conveyed and passes under the glue-coating roller for glue application. After glue application, the lower layer continues to be conveyed forward. Behind the glue-coating roller station, the upper and lower layers are aligned and stacked to form synchronous conveying. Then, the upper layer is pressed down by a pressure roller to make the upper and lower layers pass through the core material and be bonded and fixed in a predetermined area, with a filling port reserved.

[0031] This application targets the seamless quilt product form. By setting a predetermined area, the upper and lower layers of the quilt are connected and fixed through the internal core material in the predetermined area, thereby limiting the position of the core material and preventing it from moving. It is especially suitable for prefabricated integrated core materials, which are less prone to movement. Attached Figure Description

[0032] Figure 1 is a schematic diagram of the seamless hierarchical structure provided in the embodiments of this application;

[0033] Figure 2 is a schematic diagram showing the seamless quilt core material being limited by the connecting part in the embodiment of this application;

[0034] Figure 3 is a schematic diagram of the seamless connected part array distribution provided in the embodiment of this application;

[0035] Figure 4 is a schematic diagram of the seamless adhesive distribution provided in the embodiments of this application;

[0036] Figure 5 is a schematic diagram of the integrated core material composite structure provided in the embodiment of this application;

[0037] Figure 6 is a schematic diagram of the partitioned heterogeneous structure of the integral core material provided in the embodiment of this application;

[0038] Figure 7 is a schematic diagram of the integrated core material partitioned heterogeneous structure provided in the embodiments of this application;

[0039] Figure 8 is a schematic diagram of the adhesive coating process of the lower layer by an adhesive roller provided in the embodiment of this application;

[0040] Figure 9 is a schematic diagram of the lower layer adhesive conveying provided in the embodiment of this application;

[0041] Figure 10 is a schematic diagram of the glue dispensing structure inside the glue-applying roller provided in the embodiment of this application;

[0042] Figure 11 is a schematic diagram of the glue injection and dispensing structure inside the glue-applying roller provided in the embodiment of this application;

[0043] Figure 12 is a schematic diagram of the external scraper of the coating roller provided in the embodiment of this application;

[0044] Figure 13 is a schematic diagram of the adhesive coating roller sleeve structure in the embodiment of this application;

[0045] Figure 14 is a schematic diagram of the outer rotating cylinder structure of the glue-coating roller sleeve structure in the embodiment of this application;

[0046] Figure 15 is a schematic diagram of the inner fixed cylinder structure of the glue-coating roller sleeve structure in the embodiment of this application;

[0047] Figure 16 is a schematic diagram of the C-shaped cross-section of the inner fixed cylinder of the glue-coating roller sleeve structure in the embodiment of this application;

[0048] Explanation of reference numerals in the attached drawings: Top layer 100, bottom layer 200, first adhesive coating 210, second adhesive coating 220, core material 300, weak elastic layer 300-1, elastic layer 300-2, thermal insulation zone 300-3, functional zone 300-4, predetermined area 400, connecting part 500, adhesive coating roller 600, power shaft 600-1, outer rotating cylinder 600-2, inner fixed cylinder 600-3, fixing frame 600-4, positive pressure connection port 600-5, adhesive dispensing area 601, pressure roller 602, power shaft 602-1, adhesive conveying pipe 603, scraper 604, conveying roller 700, adhesive liquid 800. Detailed Implementation

[0049] To make this application more apparent and understandable, various exemplary embodiments will be described below. These examples are non-limiting and should be understood as illustrating aspects of the broader application of the apparatus, system, and method. These embodiments can be varied and substituted with equivalents without departing from the spirit and scope of this application. Furthermore, various variations can be made to adapt to specific circumstances, materials, material compositions, processing types, processing actions, or steps to suit the purpose, content, or scope of this application. All such variations will be within the protection scope of this application.

[0050] Any materials, dimensions, or quantities described in the overview or detailed description are merely examples and are not intended to limit the subject matter of this application. Furthermore, the various implementations of the embodiments described herein are complementary rather than purely alternating, unless otherwise stated. In other words, implementations from one embodiment can be freely combined with implementations from other embodiments, as will readily be apparent to those skilled in the art, unless these implementations are stated to be used only as substitutions.

[0051] In the description of this application, it should be noted that the terms "inner," "outer," "upper," "lower," "left," "right," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0052] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0053] Example 1

[0054] This application provides a seamless quilt, as shown in Figure 1, which includes an upper layer 100, a lower layer 200, and a core material 300 wrapped between the upper and lower layers. By setting a number of corresponding predetermined areas 400 in the upper and lower layers, the upper layer 100 and the lower layer 200 are connected and fixed through the core material in these predetermined areas to form a three-layer quilt.

[0055] The upper and lower layers define the space for placing the core material. The upper and lower layers can be two separate pieces of fabric, which are placed on the top and bottom of the core material respectively to wrap it; or they can be a single piece of fabric folded in half to form the upper and lower layers that wrap the core material.

[0056] For example, the core material 300 can be an insulating medium that is filled between the upper and lower layers, such as common down, silk, wool, cotton, or fibers; or it can be a single sheet of core material pre-made from the insulating medium, such as a latex sheet, polyester fiber sheet, or a mixed material sheet. For non-integral core materials, the edges of the upper and lower layers should be fixedly connected to enclose the core material; while for integral core materials, the edges of the upper and lower layers can be intermittently fixedly connected, which can also serve to enclose the core material.

[0057] In a further embodiment, the predetermined area includes an array of predetermined areas located in the center of the quilt surface. The shape can be circular, annular, dotted, elongated, or petal-shaped, etc. Core material should be avoided within the predetermined area; that is, the core material should be left empty corresponding to the predetermined area. This allows the upper and lower layers to pass through the empty space and be connected and fixed to form a connecting part 500 (see Figure 2). The connecting part can be used to limit the core material. The predetermined areas can be arrayed (see Figure 3), thereby forming multiple arrayed connecting parts 500 to limit the core material. For post-filled core material, the predetermined area is naturally left empty, and the connecting part can be formed first, followed by filling the core material. For integral core material, holes should be pre-drilled in the predetermined area, and then the upper and lower layers should be connected to the predetermined area to form the connecting part. This provides better limiting and fixing effect, and the integral core material is less likely to move.

[0058] Of course, the connection and fixing methods of the upper layer and the lower layer include, but are not limited to, adhesive bonding, fusion welding, and ultrasonic welding. Taking adhesive bonding as an example, referring to Figure 4, a first adhesive 210 is provided on the inner side of the lower layer 200 facing the upper layer in the predetermined area, and the upper layer and the lower layer are adhesively connected and fixed in the predetermined area.

[0059] For example, the upper layer and the lower layer are conventional fabrics, quilts, textiles, etc. The edges of the upper layer and the lower layer are seamlessly connected. See Figure 4. The edge of the lower layer is provided with a second adhesive 220 facing the inner side of the upper layer. The edges of the upper layer and the lower layer are glued and fixed. The fixed position of the edges of the upper layer and the lower layer is not limited to being close to the edge. It can also be fixed around the edge.

[0060] In a further embodiment, referring to Figure 5, the integrated core material 300 is a prefabricated component and a composite structure, including a double-layer composite. One layer is a weakly elastic layer 300-1, and the other is an elastic layer 300-2. The elasticity of the weakly elastic layer 300-1 is less than that of the elastic layer 300-2. The integrated core material is used behind a seamless quilt, so the two sides provide different sleeping experiences when the user sleeps, allowing the user to freely choose which side faces them. In addition to elasticity, layered structures with different breathability, different warmth retention, and different loft can also be provided to offer different sleeping experiences. Similarly, a multi-layered composite structure can be used, with each layer made of materials with different elasticity, breathability, warmth retention, or loft.

[0061] In another embodiment, referring to Figure 6, the integral core material 300 is a prefabricated part and has a partitioned heterogeneous structure. Different insulation capabilities are set in different areas along the length of the core material. For example, stronger insulation material is set in the abdomen area, and ordinary insulation material is set in other areas. The abdomen area is the insulation partition 300-3. Similarly, insulation partitions can also be set in the areas corresponding to the shoulders, ankles, knees, etc.

[0062] Furthermore, as shown in Figure 7, the integrated core material 300 is a prefabricated component with a partitioned, heterogeneous structure. Functional partitions 300-4 are set in special areas. In addition to the warmth partition, the functional partition 300-4 can also be set as a breathable partition, located in the fan-shaped area corresponding to the two shoulders. When the user covers their mouth and nose, they can still breathe freely, bringing a new user experience. Of course, weight partitions can also be set on the sides of the body to provide downward pressure from the sides and help prevent unconsciously rolling up the blanket while sleeping.

[0063] Example 2

[0064] This application also provides a coating roller for manufacturing seamless blankets. The lower layer of the seamless blanket is coated with glue in a predetermined area 400 by the coating roller 600. Referring to Figure 8, the coating roller 600 has a glue storage cavity inside for storing glue liquid. A plurality of glue outlet areas 601 are formed on the outer circumferential surface of the coating roller for dispensing glue. The distribution of the glue outlet areas 601 corresponds to the distribution of the predetermined area 400. The distribution of the glue outlet areas 601 determines the glue application position (i.e., the predetermined area 400). Taking the outer circumferential surface of the coating roller 600 in its unfolded state as an example, the unfolded length of the outer circumferential surface of the coating roller 600 matches the specifications of the lower layer 200 (for different specifications, such as 2m and 2.2m seamless blankets, a coating roller of the corresponding specification should be used when applying glue to the lower layer). The distribution of the glue outlet areas 601 relative to the unfolded surface of the outer circumferential surface of the coating roller corresponds to the distribution of the predetermined area 400 relative to the lower layer 200, so that the coating roller 600 can coat all the predetermined areas 400 with glue in one revolution relative to the lower layer 200.

[0065] Specifically, the glue-applying roller 600 rotates around its own main shaft, and the lower layer 200 passes through the edge of the glue-applying roller via a conveyor belt. For example, the conveyor belt can be used or the conveyor roller 700 shown in Figure 9 can be used.

[0066] Specifically, the glue dispensing area 601 has an opening covered by a wire mesh structure, which allows the glue to seep out slowly and prevents excessive leakage.

[0067] In a further embodiment, referring to Figure 10, a pressure roller 602 is provided inside the glue coating roller 600. The pressure roller 602 is eccentrically positioned with respect to the glue coating roller 600. At the contact position between the glue coating roller 600 and the lower layer 200 (bottom shown in the figure), the outer wall of the pressure roller 602 is in contact with the inner wall of the glue coating roller 600. The glue inside the glue coating roller 600 generally has a high viscosity, and gravity alone cannot guarantee the seepage effect. To improve the glue dispensing stability, the pressure roller 602 is used to rotate relative to the glue coating roller 600 to squeeze the glue, so that the glue dispensing from the bottom of the glue coating roller 600 is uniform. At the contact point between the pressure roller 602 and the coating roller 600, the linear velocity of the pressure roller 602 is greater than that of the coating roller 600. It is understood that, to avoid structural interference, the coating roller 600 is closed at one end and open at the other. The power shaft 600-1 of the coating roller 600 and the power shaft 602-1 of the pressure roller 602 are located at opposite ends in different directions. For example, as shown in the diagram, the power shaft 602-1 of the pressure roller 602 extends from the open end to connect to the drive equipment (motor, pulley, track, etc.).

[0068] In a further embodiment, referring to Figure 11, the glue-applying roller 600 is connected to a glue-feeding pipe 603. The glue-feeding pipe 603 is externally connected to a glue-injection device and extends from the open end inward to the glue storage chamber. The portion of the glue-feeding pipe 603 located inside the glue-applying roller has a glue-injection port. Furthermore, the glue-injection ports are arranged in an array along the length direction of the glue-applying roller.

[0069] In a further embodiment, referring to Figure 12, a fixed scraper 604 is also provided on the outer wall of the glue-applying roller. Taking the contact position between the glue-applying roller and the lower layer as the starting point, the scraper 604 is located in the latter half of the rotation direction of the glue-applying roller. Before the glue-applying roller contacts the lower layer, the scraper 604 is used to scrape off the residual glue on the outer surface of the glue-applying roller, so that when the glue-applying roller contacts the lower layer, glue is only dispensed in the glue dispensing area 601.

[0070] Example 3

[0071] This application also provides a glue-applying roller for manufacturing seamless coatings. Unlike Embodiment 2, the internal structure of the glue-applying roller 600 in Embodiment 3 is different. Referring to Figure 13, the glue-applying roller 600 has a sleeve structure, including an outer rotating cylinder 600-2 (see Figure 14) and an inner fixed cylinder 600-3 (see Figure 15). The inner fixed cylinder 600-3 is inserted inside the outer rotating cylinder 600-2. One end of the outer rotating cylinder 600-2 is open, and the other end is connected to a power shaft 600-1, which rotates outside the inner fixed cylinder 600-3. The inner fixed cylinder 600-3 is fixed by a fixing bracket 600-4 connected to its open end. Referring to Figures 15 and 16, the inner fixed cylinder 600-3 is C-shaped. The cross-section shows a C-shaped opening facing the direction where the coating roller contacts the lower layer (shown downwards). The inner fixed cylinder 600-3 has closed end plates at both ends. The closed end plates, the inner fixed cylinder 600-3, and the outer rotating cylinder 600-2 define a closed glue storage chamber. The glue liquid 800 is located at the lower part of the glue storage chamber under the action of gravity. The closed end plate at the open end is provided with a positive pressure connection port 600-5. The positive pressure connection port 600-5 is connected to a positive pressure device to provide positive pressure to the glue storage chamber. The C-shaped opening of the inner fixed cylinder 600-3 faces the direction where the coating roller contacts the lower layer. Only the glue outlet area 601 in this direction is subjected to positive pressure, and glue can be stably dispensed from the glue outlet area 601 to the lower layer.

[0072] In a further embodiment, unlike the C-shaped opening shown in Figures 15 and 16, to prevent positive pressure from being transmitted to the non-directly lower glue dispensing area 601 and causing glue leakage, the opening width of the C-shaped opening should not exceed the distance between adjacent glue dispensing areas 601. Furthermore, the opening width of the C-shaped opening should preferably be slightly larger than the circumferential width of a single glue dispensing area 601 on the glue coating roller. It is specifically noted here that the glue dispensing areas are discretely distributed. If the glue dispensing areas are continuous, the opening width of the C-shaped opening can be determined by adjusting according to the actual working conditions. It is important to avoid the glue dispensing areas that are not at the bottom being subjected to significant positive pressure.

[0073] For other structures not covered, please refer to Embodiment 2. Similarly, the glue delivery tube passes through the closed end plate located at the open end and enters the glue storage chamber.

[0074] Example 4

[0075] This application also provides a process for making a seamless quilt using the aforementioned glue-coating roller. The seamless quilt to be made includes an upper layer, a lower layer, and a core material wrapped between the upper layer and the lower layer. The upper layer and the lower layer are provided with a number of corresponding predetermined areas. The lower layer is glued to the predetermined areas, and the upper layer and the lower layer are bonded and fixed through the core material in the predetermined areas.

[0076] Includes the following steps:

[0077] S1. Adhesive is applied to a predetermined area of ​​the lower layer using an adhesive roller. The adhesive roller has an internal adhesive storage cavity and several adhesive dispensing areas on its outer circumferential surface. The unfolded length of the outer circumferential surface of the adhesive roller matches the specifications of the lower layer. The distribution of the adhesive dispensing areas relative to the outer circumferential surface of the adhesive roller is consistent with the distribution of the predetermined areas relative to the lower layer. The adhesive roller rotates around its own main axis, and the lower layer passes through the edge of the adhesive roller via a conveyor. The adhesive roller rolls around the lower layer for one revolution, which just covers all predetermined areas with adhesive.

[0078] S2. Place the core material in a non-predetermined area on the lower layer;

[0079] S3. Cover the core material and the bottom layer with the top layer, and press down the top layer so that the top layer and the bottom layer pass through the core material and are bonded and fixed in the predetermined area.

[0080] It should be noted that the core material involved in step S2 generally refers to prefabricated integrated core material, i.e. sheet core material, which can be pre-drilled and left open in the predetermined area.

[0081] In a further embodiment, the bottom and top layers are made of continuous fabric, stored in rolls and continuously fed via conveyor belts or rollers. The bottom layer is conveyed and passes under the gluing roller for gluing. After gluing, the bottom layer continues to be conveyed forward. The integrated core material is also made of continuous fabric. Behind the gluing roller, the integrated core material is positioned and stacked with the bottom layer. Then, the top layer is also aligned and covers the surface of the integrated core material, forming a three-layer synchronous conveying. Finally, the pressure roller presses down on the top layer, causing the top and bottom layers to pass through the core material and be bonded and fixed in a predetermined area.

[0082] Example 5

[0083] For the filling material, the process of making a seamless quilt using the aforementioned glue-coating roller is slightly different: the top and bottom layers need to be glued together first, and a filling port is left at the edge of the quilt surface to inject the filling material; specifically, the following steps are included:

[0084] S1. Adhesive is applied to a predetermined area of ​​the lower layer using an adhesive roller. The adhesive roller has an internal adhesive storage cavity and several adhesive dispensing areas on its outer circumferential surface. The unfolded length of the outer circumferential surface of the adhesive roller matches the specifications of the lower layer. The distribution of the adhesive dispensing areas relative to the outer circumferential surface of the adhesive roller is consistent with the distribution of the predetermined areas relative to the lower layer. The adhesive roller rotates around its own main axis, and the lower layer passes through the edge of the adhesive roller via a conveyor. The adhesive roller rolls around the lower layer for one revolution, which just covers all predetermined areas with adhesive.

[0085] S2. Leave a filling opening at the edge of the seamless quilt, cover the lower layer with the upper layer, set a barrier at the edge, press down the upper layer to bond the upper layer and the lower layer to the predetermined area, avoid bonding at the location of the barrier, remove the barrier to leave a filling opening.

[0086] S3. Fill the layer between the top and bottom layers from the filling port;

[0087] S4. After filling with down, apply adhesive to seal the down filling port.

[0088] In a further embodiment, the raw materials for the lower and upper layers are continuous fabrics, stored in rolls. When feeding is required, the fabric is continuously fed via a conveyor belt or conveyor rollers. The lower layer is conveyed and passes under the glue-coating roller for glue application. After glue application, the lower layer continues to be conveyed forward. Behind the glue-coating roller station, the upper and lower layers are aligned and stacked to form synchronous conveying. Then, the upper layer is pressed down by a pressure roller to bond the upper and lower layers through the core material in a predetermined area, with a filling port reserved.

[0089] The above description is merely a preferred embodiment of this application and does not constitute any limitation on this application in any form or substance. It should be noted that those skilled in the art can make several improvements and additions without departing from this application, and these improvements and additions should also be considered within the scope of protection of this application. Any modifications, alterations, and equivalent variations made by those skilled in the art based on the disclosed technical content without departing from the content and scope of this application are equivalent embodiments of this application. Furthermore, any equivalent changes, alterations, and variations made to the above embodiments based on the essential technology of this application still fall within the scope of the technical solution of this application.

Claims

1. A seamless diaper characterized by, It includes an upper layer, a lower layer, and a core material wrapped between the upper and lower layers; the upper and lower layers are provided with a number of corresponding predetermined areas, and the upper and lower layers are connected and fixed through the core material in the predetermined areas.

2. A seamless cover according to claim 1, wherein, The edges of the upper and lower layers are fixedly connected, enclosing the core material.

3. A seamless cover according to claim 1, wherein, The core material is a prefabricated integral core material.

4. A seamless cover according to claim 3, characterized in that, The core material has a perforation corresponding to the predetermined area, and the upper layer and the lower layer are connected and fixed through the perforation in the predetermined area to form a connecting part, which is used to limit the core material.

5. A seamless bag according to claim 3, wherein, The integrated core material is designed as a composite structure, including multiple composite layers; the multiple composite layers are made of materials with different elasticity, different breathability, different heat retention capacity, or different loft.

6. A seamless cover according to any one of claims 1-5, characterized in that, The inner side of the lower layer facing the upper layer is coated with adhesive in the predetermined area, and the upper layer and the lower layer are glued and fixed together in the predetermined area.

7. A glue applicator roll for making a seamless quilt, characterized by The seamless assembly includes an upper layer, a lower layer, and a core material encasing the upper and lower layers. The upper and lower layers have corresponding predetermined areas. The lower layer is coated with adhesive by a coating roller in the predetermined areas, and the upper and lower layers are bonded and fixed through the core material in the predetermined areas. The coating roller has an internal adhesive storage cavity and several adhesive outlet areas on its outer circumference. The unfolded length of the outer circumference of the coating roller matches the specifications of the lower layer, and the distribution of the adhesive outlet areas relative to the outer circumference of the coating roller matches the distribution of the predetermined areas relative to the lower layer. The coating roller rotates around its own main axis, and the lower layer passes through the edge of the coating roller via a conveying mechanism.

8. A coating roller for manufacturing seamless blankets according to claim 7, characterized in that, The glue-applying roller is equipped with a pressure roller, which is eccentrically positioned to the glue-applying roller. At the contact position between the glue-applying roller and the lower layer, the outer wall of the pressure roller is attached to the inner wall of the glue-applying roller.

9. The glue roller for making a seamless quilt according to claim 7, wherein The glue-applying roller is configured as a sleeve structure, including an outer rotating cylinder and an inner fixed cylinder. The outer rotating cylinder is connected to a drive spindle at one end of the glue-applying roller, and the inner fixed cylinder is connected to a fixing frame at the other end of the glue-applying roller. The inner fixed cylinder has a C-shaped cross-section, with the C-shaped opening facing the direction in which the glue-applying roller contacts the lower layer. The inner fixed cylinder has closed end faces at both ends, and the closed end faces, the inner fixed cylinder, and the outer rotating cylinder define a closed glue storage cavity. A positive pressure connection port is provided on the closed end face near the fixing frame, and the positive pressure connection port is connected to a positive pressure device to provide positive pressure to the glue storage cavity.

10. A glue roller for making a seamless quilt according to any one of claims 8-9, characterized in that, The glue-coating roller is connected to a glue delivery pipe. The glue delivery pipe is externally connected to a glue injection device and extends inward to a glue storage chamber. The portion of the glue delivery pipe located inside the glue-coating roller has a glue injection port.

11. The glue roller for making a seamless quilt according to claim 10, wherein The glue injection ports are arranged in an array along the length of the glue coating roller.

12. The glue roller for making a seamless quilt according to claim 7, wherein The adhesive dispensing area is covered with a mesh structure.

13. The glue roller for making a seamless quilt according to claim 7, wherein A fixed scraper is also provided on the outer wall of the glue-applying roller. Taking the contact position between the glue-applying roller and the lower layer as the starting point, the scraper is located in the latter half of the rotation direction of the glue-applying roller.

14. A seamless fabrication process, characterized in that, The seamless material to be manufactured includes an upper layer, a lower layer, and a core material wrapped between the upper and lower layers. The upper and lower layers are provided with a number of corresponding predetermined areas. The lower layer is coated with adhesive in the predetermined areas. The upper and lower layers are bonded and fixed through the core material in the predetermined areas. Includes the following steps: S1. Adhesive is applied to a predetermined area of ​​the lower layer using an adhesive roller. The adhesive roller has an internal adhesive storage chamber and several adhesive dispensing areas on its outer circumferential surface. The unfolded length of the outer circumferential surface of the adhesive roller matches the specifications of the lower layer, and the distribution of the adhesive dispensing areas relative to the outer circumferential surface of the adhesive roller matches the distribution of the predetermined areas relative to the lower layer. The adhesive roller rotates around its own main axis, and the lower layer passes through the edge of the adhesive roller via a conveyor. The adhesive roller applies adhesive to all predetermined areas by rolling around the lower layer for one revolution. S2. The core material is placed in a non-pre-defined area on the lower layer; S3. The upper layer covers the core material and the lower layer, and the upper layer is pressed down so that the upper layer and the lower layer pass through the core material and are bonded and fixed in the predetermined area.

15. The seamless fabrication process according to claim 14, characterized in that, The upper and lower layers are made of continuous fabric and stored in roll form. The upper and lower layers are fed continuously by conveyor belts or conveyor rollers. The lower layer is conveyed and passes under the glue coating roller for glue coating. The glued lower layer continues to be conveyed forward. The core material is a single piece, and the raw material is a continuous fabric. Behind the glue coating roller station, the single core material is aligned and stacked with the lower layer by positioning. The upper layer is also aligned and covers the surface of the single core material to form a three-layer synchronous conveying.

16. A seamless fabrication process, characterized in that, The seamless material to be manufactured includes an upper layer, a lower layer, and a core material wrapped between the upper and lower layers. The upper and lower layers are provided with a number of corresponding predetermined areas. The lower layer is coated with adhesive in the predetermined areas. The upper and lower layers are bonded and fixed through the core material in the predetermined areas. Includes the following steps: S1. Adhesive is applied to a predetermined area of ​​the lower layer using an adhesive roller. The adhesive roller has an internal adhesive storage chamber and several adhesive dispensing areas on its outer circumferential surface. The unfolded length of the outer circumferential surface of the adhesive roller matches the specifications of the lower layer, and the distribution of the adhesive dispensing areas relative to the outer circumferential surface of the adhesive roller matches the distribution of the predetermined areas relative to the lower layer. The adhesive roller rotates around its own main axis, and the lower layer passes through the edge of the adhesive roller via a conveyor. The adhesive roller applies adhesive to all predetermined areas by rolling around the lower layer for one revolution. S2. Leave a filling opening at the edge of the seamless quilt, cover the lower layer with the upper layer, press down the upper layer to make the upper layer and the lower layer bond and fix them in the predetermined area, while avoiding the upper layer and the lower layer at the filling opening position from bonding and fixing them, thereby leaving a filling opening. S3. Fill the layer between the top and bottom layers from the filling port; S4. After filling with down, seal the down filling port.

17. The seamless fabrication process according to claim 16, characterized in that, The upper and lower layers are made of continuous fabric and stored in roll form. The upper and lower layers are fed continuously by a conveyor belt or conveyor roller. The lower layer is conveyed and passes under the glue-coating roller for glue application. After glue application, the lower layer continues to be conveyed forward. Behind the glue-coating roller station, the upper and lower layers are aligned and stacked to form synchronous conveying. Then, the upper layer is pressed down by the pressure roller to make the upper and lower layers pass through the core material and be bonded and fixed in a predetermined area, with a filling port reserved.

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