Seamless quilt and production process of seamless quilt

Abstract

The invention discloses a seamless quilt and a production process of the seamless quilt, and relates to the technical field of household products. The seamless quilt comprises an upper surface layer, a lower surface layer and a core material wrapped between the upper surface layer and the lower surface layer; a plurality of corresponding preset areas are arranged on the upper surface layer and the lower surface layer, and the upper surface layer and the lower surface layer are connected and fixed in the preset areas by avoiding the core material to form the seamless quilt; the production process comprises the steps that a film with glue is used, the film with the glue is provided with glue corresponding to preset areas of the upper surface layer and the lower surface layer, and the glue is transferred to the preset areas of the upper surface layer or / and the lower surface layer through the film with the glue; compared with the prior art, the production process has the advantages that the controllability of the production process is improved; the flexibility of the operation process is improved; the investment of a large amount of equipment is avoided, and the operation risk is reduced; the gluing speed is increased, and the production efficiency is improved; and large-scale industrial batch production is facilitated.

Description

Technical Field

[0001] The present application discloses a seamless quilt and a production process thereof, relating to the technical field of household products. Background Art

[0002] Quilts are commonly used household products. Usually, the quilt cover and the internal core material are fixed by sewing. Inevitably, during long-term use, the sewing holes may expand, resulting in the leakage of the filling material or the entry of dust, or the thread may come off.

[0003] To improve the use experience and service life, currently in this technical field, a product form of seamless quilt has emerged. A seamless quilt means that the quilt cover and the internal core material are fixed in a seamless (sewing) manner such as by gluing, welding, ultrasonic welding, etc. to form a quilt. Since the seamless (sewing) quilt is fixed in a seamless manner, the upper layer and the lower layer of the quilt are usually directly fixed to the filling material. For example, in the Chinese patent with the authorized publication number CN202775408U and the patent name "A wireless trace embossed quilt", the seamless quilt provided; this results in the remaining filling material that is not fixed to the upper layer and the lower layer lacking limit fixation and being prone to movement; moreover, the bonding strength between the quilt cover and the filling material is low and it is easy to tear open.

[0004] Another example is the Chinese patent with the patent number 2024231830262 and the patent name "A seamless quilt and a glue - applying roller for making a seamless quilt". A structure that restricts the middle core material is formed by bonding specific areas on the upper and lower quilt covers, and the quilt cover no longer bonds with the filling material, overcoming the above problems. However, in this technical solution, the amount of glue applied is mainly controlled by adjusting the gap of the glue - applying roller and other methods, and the glue - applying method is not precise enough. For example, when coating some materials with strict requirements for the amount of glue, there may be a situation where too much glue is applied, resulting in waste and overflow of the glue liquid, or too little glue is applied, affecting the bonding effect. In addition, during the rotation of the glue - applying roller, the unevenness of the roller surface due to the residual glue material or the partial blockage of the glue - outlet holes leading to uneven distribution of the glue liquid will result in glue marks after glue application, affecting the appearance quality of the product.

[0005] Another example is the Chinese patent with the patent number 2025102786002 and the patent name "A seamless quilt, a seamless quilt production process and a glue - applying device". The 3D printing dispensing technology is used to apply glue to specific areas of the seamless quilt. A structure that restricts the middle core material is formed by bonding specific areas on the upper and lower quilt covers to fix the filling material between the upper and lower layers of the seamless quilt. However, during the 3D printing dispensing process, the coordinated movement of multiple axes is involved. As the number of coordinated movements increases and the complexity improves, the movement coordination errors between the axes are likely to accumulate, thereby affecting the accuracy of the final dispensing position and the amount of glue, reducing the dispensing quality; the 3D dispensing process has a slow dispensing speed and low output for the entire quilt cover; in addition, the 3D dispensing equipment also has problems such as high price and difficult programming.

[0006] In addition, the preparation processes in the above-mentioned second and third solutions must be carried out continuously, that is, a seamless quilt needs to be made immediately after gluing, and the flexibility of the processing process is poor; and it requires the manufacturer to increase the corresponding equipment investment, increasing the business risk. Therefore, there is an urgent need in the technical field to obtain a production process for seamless quilts that is flexible and controllable during production and has high processing efficiency. Summary of the Invention

[0007] The technical problem to be solved by this application is to solve the technical problems of poor flexibility of the processing technology, large investment in fixed equipment, high business risk, and low production efficiency during the current production process of seamless quilts.

[0008] To solve the above technical problems, the technical solution of this application provides a production process for seamless quilts. The seamless quilt includes an upper layer, a lower layer, and a core material wrapped between the upper layer and the lower layer; a number of corresponding predetermined areas are provided on the upper layer and the lower layer, and the upper layer and the lower layer are connected and fixed to form a seamless quilt by avoiding the core material in the predetermined areas; the production process includes using an adhesive film, and the adhesive film is provided with a colloid corresponding to the predetermined areas of the upper and lower layers, and the colloid is transferred to a number of predetermined areas of the upper layer or / and the lower layer through the adhesive film.

[0009] Preferably, the adhesive film includes a first release film, a second release film, and a colloid provided between the first release film and the second release film; the adhesion force between the colloid and the first release film is less than the adhesion force between the colloid and the second release film; the adhesion force between the colloid and the second release film is less than the adhesion force between the colloid and the upper and lower layers.

[0010] Preferably, the colloid is a hot melt adhesive; the core material is an integral core material.

[0011] Preferably, the production process includes uncovering the first release film of the adhesive film, and the second release film carrying the colloid abuts against the lower layer so that the colloid is bonded to the lower layer, and then the second release film is uncovered, and the colloid is transferred to the lower layer.

[0012] Preferably, the upper and lower layers, the adhesive film, and the core material are all sheet materials; after the adhesive film is uncovered and the first release film is removed, it entirely covers the lower layer, and then the second release film is uncovered and removed, and the colloid is transferred to a number of predetermined areas of the lower layer; the core material and the upper layer are successively laid on the lower layer, and the upper layer and the lower layer are connected and fixed to form a seamless quilt by avoiding the core material in the predetermined areas.

[0013] Further preferably, the adhesive film is transferred through an adsorption device, and the adsorption device includes an electrostatic adsorber or a vacuum suction cup.

[0014] Preferably, the bottom layer is a roll material; the top layer, the adhesive film, and the core material are sheet materials; after the adhesive film is uncovered and the first release film is removed, the whole surface covers the bottom layer, and then the second release film is uncovered and removed, and the colloid is transferred to several predetermined areas of the bottom layer; the core material and the top layer are successively laid on the bottom layer, and the top layer and the bottom layer are connected and fixed while avoiding the core material in the predetermined areas, and the bottom layer is cut to obtain the required seamless quilt.

[0015] Preferably, the top and bottom layers are roll materials; the adhesive film and the core material are sheet materials; after the adhesive film is uncovered and the first release film is removed, the whole surface covers the bottom layer, and then the second release film is uncovered and removed, and the colloid is transferred to several predetermined areas of the bottom layer; the core material and the top layer are successively arranged on the bottom layer, and the top layer and the bottom layer are connected and fixed while avoiding the core material in the predetermined areas, and the top and bottom layers are cut to obtain the required seamless quilt.

[0016] Preferably, the top and bottom layers and the adhesive film are roll materials; the core material is a sheet material; after the adhesive film is uncovered and the first release film is removed, it covers the bottom layer, and then the second release film is uncovered and removed, and the colloid is transferred to several predetermined areas of the bottom layer; the core material and the top layer are successively arranged on the bottom layer, and the top layer and the bottom layer are connected and fixed while avoiding the core material in the predetermined areas, and the top and bottom layers are cut to obtain the required seamless quilt.

[0017] Preferably, the top and bottom layers, the adhesive film, and the core material are all roll materials; after the adhesive film is uncovered and the first release film is removed, it covers the bottom layer, and then the second release film is uncovered and removed, and the colloid is transferred to several predetermined areas of the bottom layer; the core material is cut and then successively arranged with the top layer on the bottom layer, and the top layer and the bottom layer are connected and fixed while avoiding the core material in the predetermined areas, and the top and bottom layers are cut to obtain the required seamless quilt.

[0018] Preferably, after the adhesive film is uncovered and the first release film is removed, it covers the bottom layer, and then enters a caterpillar press, and the colloid on the adhesive film is bonded to the bottom layer through continuous roll pressing.

[0019] The present invention provides a seamless quilt, and the seamless quilt is prepared according to the above production process for producing a seamless quilt.

[0020] The beneficial effects of this application are as follows:

[0021] The seamless quilt produced in this application is obtained by applying glue to specific areas on the upper layer or the lower layer with an adhesive film, and bonding and fixing the upper layer and the lower layer to avoid the core material in the specific areas to obtain the required seamless quilt. Compared with the prior art, the production process of this application can prepare the adhesive film in advance and then carry out production when needed; it increases the controllability of the production process; it increases the flexibility of the operation process; it avoids the investment in a large number of equipment and reduces the business risk; and it improves the glue application speed and production efficiency; it is more conducive to large-scale industrial batch production. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the hierarchical structure of the seamless quilt provided in the embodiment of this application;

[0023] Figure 2 It is a schematic diagram of the core material of the seamless quilt provided in the embodiment of this application being limited by the connecting part;

[0024] Figure 3 It is a schematic diagram of the array distribution of the connecting parts of the seamless quilt provided in the embodiment of this application;

[0025] Figure 4 It is a schematic diagram of the glue application distribution of the seamless quilt provided in the embodiment of this application.

[0026] Figure 5 It is a flowchart of the full-automatic seamless quilt production in Embodiment 5 of this application.

[0027] Reference numerals: upper layer 100, lower layer 200, first glue application part 210, second glue application part 220, core material 300, predetermined area 400, connecting part 500, first material cylinder 600, second material cylinder 700, third material cylinder 800, fourth material cylinder 900, first waste material cylinder 1000, second waste material cylinder 1001. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To make this application more obvious and understandable, various exemplary embodiments will be introduced below. These examples are non-limiting, and it should be understood that they are used to exemplify the more general applications of devices, systems, and methods. Without departing from the essence and scope of this application, these embodiments can be varied in many ways and can be replaced by equivalents. In addition, various changes can be made to adapt to special situations, materials, material components, treatment types, treatment actions, or steps to adapt to the purpose, content, or scope of this application. All such changes will be within the protection scope of this application.

[0029] For any materials, dimensions, and quantities introduced in the overview or detailed description, they are only examples and do not limit the subject matter of this application. Moreover, various embodiments of the embodiments described herein will complement each other rather than being purely alternative, unless stated otherwise. In other words, the embodiments from one embodiment can be freely combined with the embodiments from other embodiments, as is readily understood by those of ordinary skill in the art, unless it is stated that these embodiments are only for replacement.

[0030] In the description of this application, it should be noted that the orientation or positional relationships indicated by the terms "inner", "outer", "upper", "lower", "left", "right", "front", "rear", etc. are based on the orientation or positional relationships shown in the drawings, or the orientation or positional relationships in which the products of this application are customarily placed during use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0031] In the description of this application, it should also be noted that unless otherwise clearly specified and defined, the terms "set" and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] Embodiment 1

[0033] A production process of a seamless quilt, wherein the seamless quilt includes an upper layer 100, a lower layer 200, and a core material 300 wrapped between the upper layer 100 and the lower layer 200; a number of corresponding predetermined areas are provided on the upper layer 100 and the lower layer 200, and the upper layer 100 and the lower layer 200 are adhesively connected and fixed at the predetermined area 400 while avoiding the core material 300.

[0034] It should be noted that in the above process, the core material 300 used generally refers to a prefabricated integral core material, that is, a sheet-shaped core material. The prefabricated integral core material can be provided with pre-opened holes and left empty at the predetermined area 400.

[0035] This embodiment is completed by all manual production. The upper and lower layers, the adhesive film, and the core material are all sheet-shaped. In the bonding process, the colloid is transferred from the release film to the predetermined area of the lower layer 200 through the adhesive film. The colloid selected is a hot melt adhesive that is solid at normal temperature and melts after heating.

[0036] During the production process of the adhesive film, a dispensing machine can be used to apply glue on the first release film by setting the coordinate position, temperature, etc. of the glue on the adhesive film. After the glue application is completed, a second release film is covered on the glue. Among them, the adhesion force between the glue and the first release film is less than the adhesion force between the glue and the second release film; the adhesion force between the glue and the second release film is less than the adhesion force between the glue and the upper and lower layers. The edges of the first release film and the second release film are cut with a knife with moderate sharpness to form starting corners, which are used as the first opening part and the second opening part. The first release film and the second release film are transparent films, which is convenient for observing whether the positions of the predetermined area of the lower layer and the glue part in the adhesive film are aligned. After the glue cools down, it is placed flat on the shelf for standby.

[0037] Before applying glue, the operator first lays the lower layer of the seamless quilt on a tabletop slightly larger than the lower layer, with the side having the predetermined area facing up, and fixes it with a locator. Subsequently, the adhesive film is taken out with the first release film facing the lower layer; in this embodiment, the upper and lower layers, the adhesive film, and the core material are all in sheet form.

[0038] During the glue application process, first lift the four corners of the adhesive film simultaneously, tear the first release film from the first opening part, and perform the tearing simultaneously according to the command to ensure that the tearing speed and direction are consistent. After exposing the glue, put down the adhesive film, and it is possible to observe through the transparent film whether the glue abuts against the predetermined area. The abutting process can be carried out in segments to better control the glue application process. Pull the torn part of the first release film away from the part of the lower layer to be glued to prevent the torn part from blocking the part that needs to be glued subsequently. After all the first release film is peeled off, confirm again that the glue coincides with the predetermined area of the lower layer, and then put down the adhesive film to cover the lower layer 200;

[0039] Subsequently, lift one end of the second release film from the second opening part to separate the second release film from the glue, and complete the glue application operation on the lower layer 200. The glue application process is carried out in a clean environment. The adhesive film and the lower layer 200 used in the glue application are both in sheet form.

[0040] Subsequently, lift the sheet-shaped core material 300. Marks are pre-made at the edges of the core material 300 and the lower layer 200. After confirming that the through hole on the core material 300 is placed above the predetermined area, then put down the core material 300 simultaneously, and the upper layer 100 is also aligned and covered on the surface of the core material 300. This composite structure is then hot-pressed by a laminator; during the hot-pressing process, the upper layer 100 and the lower layer 200 coincide at the predetermined area 400 and the edges (i.e., form Figure 4 the first glue application part 210 and the second glue application part 220 in), at this time the glue can avoid the core material 300 to bond the upper and lower layers, thereby obtaining a seamless quilt. The bonding process can also be carried out on a specific mold, and the mold has protrusions corresponding to the position of the predetermined area, so that the predetermined areas of the upper and lower layers pass through the core material to form a connecting part 500, such as Figure 1 、2 shown.

[0041] Example 2

[0042] This embodiment adopts a semi-automatic discontinuous method to produce a seamless quilt. The structure of the seamless quilt, the principle of the gluing process, and the production process of the adhesive film are the same as those of Embodiment 1, and the upper layer 100, the lower layer 200, the adhesive film, and the core material 300 are all in sheet form.

[0043] Before gluing, the lower layer 200 fabric is placed on the lower layer placement seat with the side with the predetermined area facing upward and fixed with a locator (such as a clip, a pin, etc.); then, the adhesive film is taken out and the first release film is facing the lower layer 200.

[0044] During the gluing process, mechanical devices can be used to assist the production process. The adhesive film can be adsorbed by an absorbent, a substrate is connected to the top of the absorbent, and the substrate is connected to a lifting mechanism and a moving mechanism; the adhesive film is moved to a specified position by driving the lifting mechanism and the moving mechanism; the absorbent is provided with an electrostatic adsorption disk or a vacuum adsorption disk.

[0045] By mechanically moving the adhesive film, a gap is left between the adhesive film and the underlying layer 200 to facilitate separation of the first release film. The operator at the edge of the release film tears off the first release film from the first peeling portion (tearing is performed simultaneously according to the command to ensure that the speed and direction of tearing are consistent), exposing the colloid, lowering the mobile lifting frame, observing through the transparent film, and bringing the colloid into contact with the predetermined area 400; the absorber is separated from the adhesive film and moved away;

[0046] Subsequently, one end of the second release film is peeled off from the second peeling part, and the peeling is continued until the second release film is separated from the colloid, and the glue coating is completed. The glue coating process is carried out in a clean environment, and the adhesive film and the lower layer used in the glue coating are both in sheet form, and the absorbers are distributed in an array, and vacuum absorbers or electrostatic absorbers can be selected.

[0047] After the glue coating is completed, the sheet core material 300 is lifted up, and the edges of the core material 300 and the lower layer 200 are pre-marked. After confirming that the through hole on the core material 300 is placed above the predetermined area, the core material 300 is lowered, and the upper layer 100 is also aligned to cover the surface of the core material 300. The composite structure is then hot-pressed by a laminator; during the hot-pressing process, the upper layer 100 and the lower layer 200 overlap in the predetermined area 400 and the edge (i.e., forming a Figure 4 The first glue coating part 210 and the second glue coating part 220 are formed in the middle. At this time, the glue can avoid the core material 300 to bond the upper and lower layers, thereby obtaining a seamless quilt. The bonding process can also be carried out on a specific mold, which has protrusions corresponding to the positions of the predetermined areas, so that the predetermined areas of the upper and lower layers pass through the core material to form a connecting part 500, such as Figure 1 ,2 Shown

[0048] Example 3

[0049] This embodiment adopts a semi-automatic continuous method to produce a seamless quilt. The structure of the seamless quilt, the principle of the gluing process, and the production process of the adhesive film are the same as those in Example 1. The adhesive film used in this embodiment is a continuous roll material, the upper layer 100 and the lower layer 200 are continuous fabrics; the core material 300 is in sheet form;

[0050] Before gluing, first roll the lower layer into the first barrel 600, roll the upper layer 100 into the third barrel 800, and roll the adhesive film into the second barrel 700, making sure that the first release film faces the lower layer. The adhesive film used in gluing is a continuous roll, the upper layer 100 and the lower layer 200 are continuous fabrics, and the core material 300 is in sheet form.

[0051] During the gluing process, the first barrel 600 rotates in the opposite direction to lead out the lower layer of fabric, with the side with the predetermined area facing upwards, and is clamped by a clamping roller group and then falls onto the conveyor belt. Subsequently, the second barrel 700 rotates in the opposite direction to lead out the adhesive film. After the first release film is torn off from the starting corner to expose the colloid to a certain length, the adhesive film falls onto the lower layer, and the contact between the colloid and the predetermined area can be observed through the transparent film. The torn part of the first release film is pulled and rolled into the first waste barrel 1000 to prevent the torn part from blocking the part that needs to be glued later. The two barrels, namely the first barrel 600 and the second barrel 700, rotate continuously to continuously lead out the adhesive film and the lower layer, and confirm that the colloid coincides with the predetermined area of the lower layer. A crawler-type continuous laminator is used to continuously roll the adhesive film and the lower layer, and output the adhesive film and the lower layer bond;

[0052] Subsequently, the lower layer and the adhesive film are cut according to the required seamless length. One end of the second release film is peeled off from the second peeling part, and the lower layer and the adhesive film are conveyed by the conveyor belt at the same time, so that the second release film is separated from the colloid during movement, and the separated second release film is continuously separated and rolled into the second waste barrel 1001 to complete the glue coating. The glue coating process is carried out in a clean environment. The first waste barrel 1000 and the second waste barrel 1001 are respectively located above the conveyor belt.

[0053] After the glue coating is completed, the sheet core material 300 is lifted up, and the edges of the core material 300 and the lower layer 200 are pre-marked. After confirming that the through hole on the core material 300 is placed above the predetermined area, the core material 300 is lowered; the upper layer is continuously drawn out through the third barrel 800, and it is also aligned to cover the surface of the core material 300. The upper layer is cut according to the required seamless length; the composite structure is then hot-pressed by a laminator; during the hot-pressing process, the upper layer 100 and the lower layer 200 overlap in the predetermined area 400 and the edge (i.e., forming a Figure 4In the first gluing part 210 and the second gluing part 220, at this time, the glue can avoid the core material 300 and bond the upper and lower layers, so as to obtain a seamless quilt. As Figure 1 、 2 、as shown in Figure 5.

[0054] When the lower layer is a coil material; and the upper layer, the adhesive film and the core material are sheet materials, the production process is similar to the above process.

[0055] When the upper and lower layers are coil materials; and the adhesive film and the core material are sheet materials, the production process is similar to the above process.

[0056] Embodiment 4

[0057] This embodiment manufactures a seamless quilt in a semi-automatic continuous manner. The structure of the seamless quilt, the principle of the gluing process, and the production process of the adhesive film are the same as those in Embodiment 3. In this embodiment, the adhesive film used is a continuous coil material, the upper layer 100 and the lower layer 200 are continuous fabrics; the core material 300 is a sheet;

[0058] Before gluing, first wind the lower layer 200 onto the first cylinder 600 by rotation, wind the upper layer 100 onto the third cylinder 800, wind the adhesive film onto the second cylinder 700 by rotation, and confirm that the first release film faces the lower layer 200.

[0059] The gluing process of the lower layer 200 is as described in Embodiment 3, but when the belt-type continuous laminator continuously rolls the adhesive film and the lower layer, and outputs the adhesive film and the lower layer, the lower layer 200 and the adhesive film are not cut;

[0060] Uncover one end of the second release film from the second uncovering part, and at the same time convey the lower layer 200 and the adhesive film through the conveyor belt, so that the second release film is separated from the colloid during movement, and continuously wind the separated second release film onto the second waste cylinder 1001 to complete gluing. The gluing process is carried out in a clean environment. The first waste cylinder 1000 and the second waste cylinder 1001 are respectively located above the conveyor belt.

[0061] Lift the sheet-shaped core material 300, make pre-marks at the edge of the core material 300 and the lower layer 200. After confirming that the through hole on the core material 300 is placed above the predetermined area, then put down the core material 300; continuously draw out the upper layer 100 through the third cylinder 800 and make it also align and cover the surface of the core material 300. Cut the upper layer 100, the lower layer 200 and the adhesive film according to the required length of the seamless quilt. The composite structure is then hot-pressed by the laminator; during the hot-pressing process, the upper layer 100 and the lower layer 200 coincide at the predetermined area 400 and the edge (that is, form Figure 4 the first gluing part 210 and the second gluing part 220 in), at this time, the glue can avoid the core material 300 and bond the upper and lower layers, so as to obtain a seamless quilt. AsFigure 1 , 2 as shown in Figure 5;

[0062] The bonding process can also utilize a heated continuous belt laminator to form a connection part 500 by avoiding the core material in the predetermined areas of the upper and lower layers, as Figure 1 , 2 shown.

[0063] Example 5

[0064] In this example, a seamless quilt is made in a fully automatic continuous manner. The structure of the seamless quilt, the principle of the gluing process, and the production process of the adhesive film are the same as those in Example 4. In this example, the upper and lower layers, the adhesive film, and the core material are all in the form of coils;

[0065] As Figure 5 shown, before applying the glue, first wind the lower layer 200 onto the first cylinder 600, wind the adhesive film onto the second cylinder 700, wind the upper layer 100 onto the third cylinder 800, and pre-wind the core material 300 onto the fourth cylinder 900. Confirm that the first release film faces the lower layer.

[0066] The glue application process for the lower layer is as described in Example 3, and the process of uncovering the second release film is as described in Example 4.

[0067] Reverse-rotate the fourth cylinder 900 to continuously draw out the core material 300, cut the core material 300 at a suitable position so that the core material covers the non-predetermined area. Continuously draw out the upper layer 100 through the third cylinder 800 and align it to cover the surface of the core material 300 as well. Use a continuous belt laminating hot press to heat the glue on the predetermined areas and the edges of the upper and lower layers. During the heating process, make the upper layer 100 coincide with the lower layer 200 in the predetermined area 400 and the edge of the lower layer 200. At this time, the glue can avoid the core material 300 and bond the upper and lower layers in part to obtain a continuous seamless quilt. Subsequently, cut at a suitable position at the glued edge of the continuous seamless quilt to obtain mass-produced seamless quilts. The bonding process can be carried out on a continuous belt laminating hot press to make the predetermined areas of the upper and lower layers pass through the core material to form a connection part 500, as Figure 1 , 2 as shown in Figure 5.

[0068] The above is only the preferred embodiment of the present application, and it does not impose any formal or substantial restrictions on the present application. It should be noted that for those of ordinary skill in the art of this technology, several improvements and supplements can still be made without departing from the present application, and these improvements and supplements should also be regarded as within the protection scope of the present application. Any equivalent changes, such as slight modifications, decorations, and evolutions made by those skilled in the art who are familiar with this specialty without departing from the content and scope of the present application by using the technical content disclosed above, are equivalent embodiments of the present application; at the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A production process of a seamless quilt, the seamless quilt comprising an upper layer, a lower layer, and a core material wrapped between the upper layer and the lower layer; a plurality of corresponding predetermined areas are provided on the upper layer and the lower layer, and the upper layer and the lower layer are connected and fixed to form a seamless quilt by avoiding the core material in the predetermined areas; characterized in that, The production process includes using an adhesive film, on which there is an adhesive corresponding to the predetermined areas of the upper and lower layers, and transferring the adhesive to several predetermined areas of the upper layer or / and the lower layer through the adhesive film.

2. The production process of a seamless quilt according to claim 1, characterized in that, The adhesive film includes a first release film, a second release film, and an adhesive provided between the first release film and the second release film; the adhesion force of the adhesive to the first release film is less than the adhesion force of the adhesive to the second release film; the adhesion force of the adhesive to the second release film is less than the adhesion force of the adhesive to the upper and lower layers.

3. The production process of a seamless quilt according to claim 1, characterized in that The adhesive is a hot melt adhesive; the core material is an integral core material.

4. The production process of a seamless quilt according to claim 2, characterized in that, The production process includes uncovering the first release film of the adhesive film, allowing the second release film carrying the adhesive to abut against the lower layer so that the adhesive is bonded to the lower layer, and then uncovering the second release film, and the adhesive is transferred to the lower layer.

5. The production process of a seamless quilt according to claim 4, characterized in that, The upper and lower layers, the adhesive film, and the core material are all sheet materials; after uncovering and removing the first release film of the adhesive film, it entirely covers the lower layer, and then the second release film is uncovered and removed, and the adhesive is transferred to several predetermined areas of the lower layer; the core material and the upper layer are successively arranged on the lower layer, and the upper layer and the lower layer are connected and fixed at the predetermined areas while avoiding the core material to form a seamless quilt.

6. The production process of a seamless quilt according to claim 5, characterized in that, The adhesive film is transferred through an adsorption device, and the adsorption device includes an electrostatic adsorber or a vacuum suction disc.

7. The production process of a seamless quilt according to claim 4, characterized in that The lower layer is a coil material; the upper layer, the adhesive film, and the core material are sheet materials; after uncovering and removing the first release film of the adhesive film, it entirely covers the lower layer, and then the second release film is uncovered and removed, and the adhesive is transferred to several predetermined areas of the lower layer; the core material and the upper layer are successively arranged on the lower layer, and the upper layer and the lower layer are connected and fixed at the predetermined areas while avoiding the core material, and the lower layer is cut to obtain the required seamless quilt.

8. The production process of a seamless quilt according to claim 4, characterized in that, The upper and lower layers are coil materials; the adhesive film and the core material are sheet materials; after uncovering and removing the first release film of the adhesive film, it entirely covers the lower layer, and then the second release film is uncovered and removed, and the adhesive is transferred to several predetermined areas of the lower layer; the core material and the upper layer are successively arranged on the lower layer, and the upper layer and the lower layer are connected and fixed at the predetermined areas while avoiding the core material, and the upper and lower layers are cut to obtain the required seamless quilt.

9. The production process of a seamless quilt according to claim 4, characterized in that, The upper and lower layers and the adhesive film are coil materials; the core material is a sheet material; after uncovering and removing the first release film of the adhesive film, it covers the lower layer, and then the second release film is uncovered and removed, and the adhesive is transferred to several predetermined areas of the lower layer; the core material and the upper layer are successively arranged on the lower layer, and the upper layer and the lower layer are connected and fixed at the predetermined areas while avoiding the core material, and the upper and lower layers are cut to obtain the required seamless quilt.

10. The production process of a seamless quilt according to claim 4, characterized in that, The upper and lower layers, the adhesive film, and the core material are all coil materials; after uncovering and removing the first release film of the adhesive film, it covers the lower layer, and then the second release film is uncovered and removed, and the adhesive is transferred to several predetermined areas of the lower layer; the core material is disconnected and then successively arranged on the lower layer with the upper layer, and the upper layer and the lower layer are connected and fixed at the predetermined areas while avoiding the core material, and the upper and lower layers are cut to obtain the required seamless quilt.

11. A production process of a seamless quilt according to any one of claims 7 to 10, characterized in that, After uncovering and removing the first release film of the adhesive film, it covers the lower layer, and then enters a caterpillar press, and the adhesive on the adhesive film is bonded to the lower layer through continuous roll pressing.

12. A seamless quilt, characterized in that, The seamless quilt is prepared by the production process of a seamless quilt according to any one of claims 1 to 10.

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