Disposable non-woven fabric elastic fitted cover and production equipment and process thereof
By setting up folded edges on the non-woven fabric covers and filling them with ultrasonic welding, combined with special production equipment, the problem of insufficient shrinkage of the non-woven fabric covers is solved, the application properties are improved, and industrial production is realized, filling the gaps in equipment and process.
Patent Information
- Application Number
- CN202510882345.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-27
- Publication Date
- 2025-08-15
AI Technical Summary
The existing non-woven covers lack shrinkage, resulting in poor application properties, difficulty in stably posting on mattresses, and lack of industrial mass production equipment and processes.
A non-woven elastic bed cover is designed. By setting the folded edges on the narrow end of the bed cover, the elastic strips are filled with the folded edges and the side edges of the bed cover are welded by ultrasonic welding technology, and combined with special production equipment to perform up and down flanges and locking angle operations to form a shrinkable bed cover structure.
The shrinkage of non-woven fabric covers has been improved, the application properties have been improved, and industrial mass production has been achieved, ensuring production efficiency and output.
Smart Images
Figure CN120477556A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of disposable non-woven fitted sheets, in particular to a disposable non-woven elastic fitted sheet and a production device and process thereof. Background Art
[0002] Nonwoven fabrics, also known as nonwovens, are fibers that exist within a cloth. They are made from oriented or randomly arranged fibers that are bonded together through friction, cohesion, adhesion, or a combination of these methods. Their advantages include being lightweight, soft, water-repellent, breathable, non-toxic, antibacterial, non-irritating, and environmentally friendly. They are widely used in the medical and health fields.
[0003] In the healthcare sector, bedding products such as pillowcases, sheets, and fitted sheets are manufactured using non-woven fabrics. However, many current non-woven fitted sheets simply resemble the shape of traditional fitted sheets and lack sufficient shrinkage. This results in poor adhesion when placed on mattresses. Furthermore, non-woven fabrics are extremely light and slippery, making them difficult to securely adhere to mattresses and prone to slippage, resulting in inconvenience. Therefore, there is an urgent need for non-woven fitted sheets with improved adhesion, as well as equipment and processes for industrial mass production of such sheets. Summary of the Invention
[0004] The present invention aims to provide a disposable non-woven elastic fitted sheet and a production device and process thereof to address the lack of a non-woven fitted sheet with good applicability and to provide an apparatus and process for industrial mass production of non-woven fitted sheets, thereby overcoming the problem that existing non-woven fitted sheets lack shrinkage and thus have poor applicability.
[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A disposable non-woven elastic fitted sheet, wherein the two narrow ends of the fitted sheet are provided with opposite folded edges, the long sides of the folded edges are rolled up and filled with elastic strips, the two ends of the elastic strips are ultrasonically welded to the two narrow sides of the folded edges, and the two ends of the folded edges are ultrasonically welded to the two sides of the fitted sheet.
[0006] A further technical solution is that the natural length of the elastic bar is shorter than the long side of the folded edge.
[0007] A further technical solution is that the welding rods at both ends of the folded edge and at both sides of the fitted sheet are arranged obliquely.
[0008] Production equipment for disposable non-woven elastic fitted sheets, including: Roller conveyor, non-woven fabric is transported in one direction through the roller conveyor; The upper flanging assembly, the upper flanging ultrasonic welding machine, the lower flanging assembly and the lower flanging ultrasonic welding machine are symmetrically arranged and distributed on both sides of the roller conveyor along the unidirectional conveying direction of the non-woven fabric. The non-woven fabric is sequentially completed with upper flanging, ultrasonic locking, lower flanging and ultrasonic corner locking; The pay-off machine outputs the spring strip, which is wrapped by the upper flange of the non-woven fabric and clamped by the working end of the upper flange ultrasonic welding machine. The spring strip is straightened and stretched by the working end of the lower flange ultrasonic welding machine and welded to the non-woven fabric. The cloth cutting machine is arranged at the tail exit of the roller conveyor to cut the non-woven fabric into the fitted sheet.
[0009] A further technical solution is: the upper flange component includes a first bottom support plate and an upper flipper, the first bottom support plate is located at the bottom of the non-woven fabric, the upper flipper is located on both sides of the non-woven fabric and the first bottom support plate, and the non-woven fabric produces an upper flange wrapped with elastic strips in the upper flipper.
[0010] A further technical solution is: the lower flange assembly includes a second bottom support plate and a lower flipper, the second bottom support plate is located at the bottom of the non-woven fabric, the lower flipper is located on both sides of the non-woven fabric and the second bottom support plate, and the non-woven fabric produces a lower flange in the lower flipper.
[0011] A further technical solution is: two embossing rings are provided on the rolling wheel of the upper flanging ultrasonic welding machine, the embossing rings are located on both sides of the elastic bar, and the rolling wheel of the upper flanging ultrasonic welding machine presses the elastic bar.
[0012] A further technical solution is that an inclined embossing strip is provided on the rolling wheel of the lower flanging ultrasonic welding machine.
[0013] The production process of disposable non-woven elastic mattress covers. The production steps of disposable non-woven elastic mattress covers are as follows: S1. Performing a first flanging on the non-woven fabric while wrapping the elastic strip with the first flanging; S2, the first flanging of the non-woven fabric in S1 is locked by ultrasonic welding, and the elastic strips are pressed at the same time; S3, turning up the nonwoven fabric in S2 for the second time, with the first turning up and the second turning up being in opposite directions; S4, locking the angle of the second flanging of the non-woven fabric in S3 by ultrasonic welding, and simultaneously tightening, stretching and welding the elastic strips; S5, cutting the non-woven fabric in S4 into individual fitted sheets; S6. Fold the fitted sheet in S5 in half, bag it, and perform vacuum compression packaging.
[0014] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: The present invention provides a disposable non-woven stretch sheet and its production equipment and process. The short edges of the non-woven sheet have retractable elastic strips, which impart shrinkage and enhance the sheet's application performance, resulting in improved comfort. This equipment enables industrialized, mass-produced non-woven stretch sheet production, ensuring high efficiency and yield, thus addressing the current shortage of industrial production equipment for non-woven stretch sheets.
[0015] Based on the elastic fitted sheet structure, the production process of the elastic fitted sheet is not restricted to existing production equipment. The production of non-standardized fitted sheets can be manually operated, and the structure and function of the production equipment can be guided by the process. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 Schematic diagram of the structure of the disposable non-woven elastic fitted sheet of the present invention.
[0017] Figure 2 The figure is a schematic structural diagram of the production equipment of the disposable non-woven elastic fitted sheet of the present invention.
[0018] Figure 3 It is a structural schematic diagram of the rolling wheel of the upper flanging ultrasonic welding machine of the present invention.
[0019] Figure 4 It is a structural schematic diagram of the rolling wheel of the lower flanging ultrasonic welding machine of the present invention.
[0020] Figure numerals: 1, fitted sheet; 2, folded edge; 3, elastic strip; 10, non-woven fabric; 11, roller conveyor; 12, upper flanging assembly; 121, first bottom support plate; 122, upper flipper; 13, upper flanging ultrasonic welding machine; 131, embossing ring; 14, lower flanging assembly; 141, second bottom support plate; 142, lower flipper; 15, lower flanging ultrasonic welding machine; 151, inclined embossed strip; 16, pay-off machine; 17, cloth cutting machine. DETAILED DESCRIPTION
[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.
[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.
[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.
[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0025] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended only to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0026] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.
[0027] Example 1: This embodiment Figure 1 As shown, a disposable non-woven elastic fitted sheet 1 is provided with opposite folded edges 2 at the two narrow ends of the fitted sheet 1. The long sides of the folded edges 2 are rolled up and filled with elastic strips 3. The two ends of the elastic strips 3 are ultrasonically welded to the two narrow sides of the folded edges 2, and the two ends of the folded edges 2 are ultrasonically welded to the two sides of the fitted sheet 1.
[0028] The elastic strip 3 is placed in the first turning edge of the short side of the fitted sheet 1 to ensure that the fitted sheet 1 has a certain shrinkage performance. The edge is then welded and sealed (locked) to prevent the elastic strip 3 from running out. The second turning edge of the short side of the fitted sheet 1 is then ultrasonically welded to ensure that an angle is formed between the short side and the long side to adapt to the shape of the mattress.
[0029] Preferably, the natural length of the elastic bar 3 is shorter than the long side of the folded edge 2 .
[0030] The elastic strip 3 is short and must be lengthened to align with the long side of the folded edge 2 , so as to achieve the effect of shrinking the fitted sheet 1 and improve the fit between the fitted sheet 1 and the mattress.
[0031] Preferably, the welding rods at both ends of the folded edge 2 and at both sides of the fitted sheet 1 are arranged obliquely.
[0032] The tilted setting of the welding rod can produce angles at the four corners of the fitted sheet that are adapted to the mattress.
[0033] Example 2: This embodiment refers to Figure 2 、 Figure 3 and Figure 4 As shown, the production equipment for disposable non-woven elastic mattress covers, which is used to manufacture disposable non-woven elastic mattress covers, includes: Roller conveyor 11, non-woven fabric 10 is transported in one direction through roller conveyor 11; The upper flanging assembly 12, the upper flanging ultrasonic welding machine 13, the lower flanging assembly 14 and the lower flanging ultrasonic welding machine 15 are symmetrically arranged and distributed on both sides of the roller conveyor 11 along the unidirectional conveying direction of the non-woven fabric 10. The non-woven fabric 10 is sequentially completed with upper flanging, ultrasonic locking, lower flanging and ultrasonic locking angles; The pay-off machine 16 outputs the spring bar 3, which is wrapped by the upper flange of the non-woven fabric 10, and is clamped by the working end of the upper flange ultrasonic welding machine 13, and is straightened and stretched by the working end of the lower flange ultrasonic welding machine 15 and welded to the non-woven fabric 10; The cloth cutting machine 17 is disposed at the rear exit of the roller conveyor 11 and is used to cut the non-woven fabric 10 into fitted sheets.
[0034] The roller conveyor 11 is generally composed of multiple pairs of conveying rollers and motors that drive the conveying rollers to rotate and other main components. It will clamp the non-woven fabric 10 and continue to transport it in one direction. The upper flanging component 12 performs the upper flanging (the first flanging) on the non-woven fabric and uses the upper flanging to wrap the elastic strip 3. The non-woven fabric 10 and the elastic strip 3 continue to move forward. The working end (ultrasonic working mechanism) of the upper flanging ultrasonic welding machine 13 performs ultrasonic welding on the upper flanging to lock the edge. At the same time, the rolling wheel of the upper flanging ultrasonic welding machine 13 presses the elastic strip 3; the non-woven fabric 10 and the elastic strip 3 continue to move forward, and the lower flanging Component 14 turns the lower edge of the non-woven fabric 10 (the second turning), and the directions of the first turning and the second turning are opposite; the lower turning ultrasonic welding machine 15 locks the angle of the lower turning edge of the non-woven fabric 10 by ultrasonic welding. At the same time, the rolling wheel of the lower turning ultrasonic welding machine 15 also presses the elastic strip 3, and cooperates with the rolling wheel of the upper turning ultrasonic welding machine 13 to tighten and stretch the elastic strip 3, and then welds the lower turning edge of the non-woven fabric 10 and the non-woven fabric 10 and the elastic strip 3 during rolling; the cloth cutting machine 17 finally cuts the non-woven fabric 10 into individual mattress covers 1.
[0035] The non-woven elastic mattress sheet production equipment fills the gap in the production of non-woven mattress sheets, and can achieve industrialized batch and continuous production with fast results and high output. The elastic mattress sheet produced has self-shrinkage and can be well matched with the mattress.
[0036] Preferably, the upper flange assembly 12 includes a first bottom support plate 121 and an upper flipper 122, the first bottom support plate 121 is located at the bottom of the non-woven fabric 10, and the upper flipper 122 is located on both sides of the non-woven fabric 10 and the first bottom support plate 121, and the non-woven fabric 10 produces an upper flange wrapped around the elastic strip 3 in the upper flipper 122.
[0037] The first bottom support plate 121 is used to support the non-woven fabric 10 and leave non-woven fabric side edges on both sides to facilitate the upward folding device 122 to fold the non-woven fabric and wrap the elastic strip 3 in the folding edge when folding.
[0038] Preferably, the lower flange assembly 14 includes a second bottom support plate 141 and a lower flipper 142. The second bottom support plate 141 is located at the bottom of the non-woven fabric 10. The lower flipper 142 is located on both sides of the non-woven fabric 10 and the second bottom support plate 141. The non-woven fabric 10 produces a lower flange in the lower flipper 142.
[0039] The second bottom support plate 141 is used to support the non-woven fabric 10 and leave side edges of the non-woven fabric on both sides to facilitate the downward folding device 142 to fold the non-woven fabric downward.
[0040] Preferably, two embossing rings 131 are provided on the rolling wheel of the upper flanging ultrasonic welding machine 13 . The embossing rings 131 are located on both sides of the spring bar 3 . The rolling wheel of the upper flanging ultrasonic welding machine 13 presses the spring bar 3 .
[0041] When the upper flanging ultrasonic welder 13 is operating, the two embossed rings 131 on the rolling wheel simultaneously produce two welding strips to form a locking edge, ensuring that the spring strip 3 does not leak out. The rolling wheels of the upper flanging ultrasonic welder 13 compress the spring strip 3, firstly pulling it and secondly, in conjunction with the rolling wheels of the lower flanging ultrasonic welder 15, straightening and lengthening the spring strip 3. The rolling wheels of the upper flanging ultrasonic welder 13 weld the straightened spring strip 3 to the nonwoven fabric 10. The rolling wheels of the upper flanging ultrasonic welder 13 also weld the lower flanging edge of the nonwoven fabric 10 to a locking foot.
[0042] Preferably, an inclined embossing strip 151 is provided on the rolling wheel of the lower flanging ultrasonic welding machine 15 .
[0043] The inclined embossed strips 151 can produce an inclined locking effect when rotated, so as to form an inclined angle on the fitted sheet 1 to better match the four corners of the mattress.
[0044] It is worth noting that the inclined embossing strip 151 does not surround the rolling wheel, but has a blank space so as to adapt to the travel of the long side of the fitted sheet 1 that does not require welding.
[0045] Example 3: This embodiment shows the production process of a disposable non-woven elastic fitted sheet. The production steps of the disposable non-woven elastic fitted sheet are as follows: S1. Performing a first flanging on the non-woven fabric while wrapping the elastic strip with the first flanging; S2, the first flanging of the non-woven fabric in S1 is locked by ultrasonic welding, and the elastic strips are pressed at the same time; S3, turning up the nonwoven fabric in S2 for the second time, with the first turning up and the second turning up being in opposite directions; S4, locking the angle of the second flanging of the non-woven fabric in S3 by ultrasonic welding, and simultaneously tightening, stretching and welding the elastic strips; S5, cutting the non-woven fabric in S4 into individual fitted sheets; S6. Fold the fitted sheet in S5 in half, bag it, and perform vacuum compression packaging.
[0046] Based on the elastic fitted sheet structure, the production process of the elastic fitted sheet 1 is not limited to existing production equipment. The above process can be carried out step by step to achieve manual operation of the production of non-standardized fitted sheets, and the structure and function of the production equipment can be guided by the process.
[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A disposable non-woven elastic fitted sheet, characterized by: The two narrow ends of the fitted sheet (1) are provided with opposite folded edges (2), the long sides of the folded edges (2) are rolled up and filled with elastic strips (3), the two ends of the elastic strips (3) are ultrasonically welded to the two narrow sides of the folded edges (2), and the two ends of the folded edges (2) are ultrasonically welded to the two sides of the fitted sheet (1).
2. The disposable non-woven elastic fitted sheet according to claim 1, wherein: The natural length of the elastic strip (3) is shorter than the long side of the folded edge (2).
3. The disposable non-woven elastic fitted sheet according to claim 1, wherein: The welding rods at both ends of the folded edge (2) and at both sides of the fitted sheet (1) are arranged obliquely.
4. Production equipment for disposable non-woven elastic fitted sheets, characterized in that: A production device for manufacturing the disposable non-woven elastic fitted sheet according to any one of claims 1 to 3, comprising: A roller conveyor (11), wherein the non-woven fabric (10) is transported in one direction via the roller conveyor (11); The upper flanging assembly (12), the upper flanging ultrasonic welding machine (13), the lower flanging assembly (14) and the lower flanging ultrasonic welding machine (15) are symmetrically arranged and sequentially distributed on both sides of the roller conveyor (11) along the unidirectional conveying direction of the non-woven fabric (10), and the non-woven fabric (10) is sequentially subjected to upper flanging, ultrasonic locking, lower flanging and ultrasonic corner locking; A wire-paying machine (16) outputs a spring bar (3), the spring bar (3) is wrapped by the upper flange of the non-woven fabric (10), and the spring bar (3) is clamped by the working end of the upper flange ultrasonic welding machine (13), and the spring bar (3) is straightened and stretched by the working end of the lower flange ultrasonic welding machine (15) and welded to the non-woven fabric (10); The cloth cutting machine (17) is arranged at the tail outlet of the roller conveyor (11) and cuts the non-woven fabric (10) to obtain the fitted sheet.
5. The production equipment for disposable non-woven elastic fitted sheet according to claim 4, characterized in that: The upper flanging assembly (12) comprises a first bottom support plate (121) and an upper flipper (122), wherein the first bottom support plate (121) is located at the bottom of the non-woven fabric (10), and the upper flipper (122) is located on both sides of the non-woven fabric (10) and the first bottom support plate (121), and the non-woven fabric (10) generates an upper flanging in the upper flipper (122) that wraps around the elastic strip (3).
6. The production equipment for disposable non-woven elastic fitted sheet according to claim 4, characterized in that: The lower flanging assembly (14) comprises a second bottom support plate (141) and a lower flanging device (142), wherein the second bottom support plate (141) is located at the bottom of the non-woven fabric (10), and the lower flanging device (142) is located on both sides of the non-woven fabric (10) and the second bottom support plate (141), and the non-woven fabric (10) generates a lower flanging in the lower flanging device (142).
7. The production equipment for disposable non-woven elastic fitted sheet according to claim 4, characterized in that: Two embossing rings (131) are provided on the rolling wheel of the upper flanging ultrasonic welding machine (13), and the embossing rings (131) are located on both sides of the spring bar (3). The rolling wheel of the upper flanging ultrasonic welding machine (13) presses the spring bar (3).
8. The production equipment for disposable non-woven elastic fitted sheet according to claim 4, characterized in that: An inclined embossing strip (151) is provided on the rolling wheel of the lower flanging ultrasonic welding machine (15).
9. A production process for a disposable non-woven elastic fitted sheet, characterized in that: The production steps of the disposable non-woven elastic fitted sheet according to any one of claims 1 to 3 are as follows: S1. Performing a first flanging on the non-woven fabric while wrapping the elastic strip with the first flanging; S2, the first flanging of the non-woven fabric in S1 is locked by ultrasonic welding, and the elastic strips are pressed at the same time; S3, turning up the nonwoven fabric in S2 for the second time, with the first turning up and the second turning up being in opposite directions; S4, locking the angle of the second flanging of the non-woven fabric in S3 by ultrasonic welding, and simultaneously tightening, stretching and welding the elastic strips; S5, cutting the non-woven fabric in S4 into individual fitted sheets; S6. Fold the fitted sheet in S5 in half, bag it, and perform vacuum compression packaging.