Polypropylene (PP) cotton filled sofa cushion and method of making the same

Abstract

The present application relates to PP cotton filled sofa cushion and its preparation method, PP cotton filled sofa cushion, including cushion cover and cushion body, the cushion body can be contained in the inside of cushion cover, the inside of the cushion cover is fixedly connected with moisture-proof layer, the cushion body includes PP cotton filling layer and bottom soft pad layer, a plurality of ventilation components are arranged between the PP cotton filling layer and the bottom soft pad layer, a plurality of through grooves are opened along the length direction of the PP cotton filling layer, a drying frame is arranged in the inner cavity of the bottom soft pad layer, a drying assembly is arranged in the drying frame, the moisture in the through groove is guided into the drying frame through the ventilation component, and then the moisture is dried through the drying assembly. When the present application is used for a long time, the PP cotton filling layer in the inside of the cushion cover can be effectively dehumidified, the PP cotton filling layer in the inside of the cushion cover is fully dried, and the whole sofa cushion is prevented from being rotted by indoor moisture.

Description

Technical Field

[0001] This invention relates to the field of home cushion technology, and more particularly to PP cotton-filled sofa cushions and their preparation methods. Background Technology

[0002] PP cotton-filled sofa cushions are a common household item made of layers of polypropylene fiber material. They have good elasticity and support, and are used to improve the comfort and aesthetics of sofas.

[0003] However, during long-term use, especially in humid indoor environments, PP cotton-filled sofa cushions do not have good dehumidification functions, which makes it easy for moisture to accumulate inside the PP cotton-filled sofa cushions and cause them to rot. Summary of the Invention

[0004] This invention addresses the shortcomings of existing technologies by providing PP cotton-filled sofa cushions and their preparation methods. The specific technical solution is as follows:

[0005] One objective of this invention is to provide a PP cotton-filled sofa cushion, comprising a cushion cover and a cushion body. The cushion body is accommodated inside the cushion cover. A moisture-proof layer is fixedly connected to the inner side of the cushion cover. The cushion body includes a PP cotton filling layer and a bottom soft pad layer. A plurality of ventilation components are provided between the PP cotton filling layer and the bottom soft pad layer. A plurality of through grooves are formed along the length direction of the PP cotton filling layer. A drying frame is provided in the inner cavity of the bottom soft pad layer. A drying component is provided in the drying frame. Moisture in the through grooves is introduced into the drying frame through the ventilation components, and then the moisture is dried by the drying components.

[0006] As an improvement to the above technical solution: the ventilation component includes a bottom block fixedly connected to the bottom padding layer near the PP cotton filling layer. A top block is inserted into one end of the bottom block near the PP cotton filling layer. A piston is inserted into the inside of the top block. A top plate is provided at one end of the top block near the PP cotton filling layer and is fixedly connected to the PP cotton filling layer. Two guide rods are fixedly connected to one side of the top plate near the top block. The other end of the guide rod slides through the inside of the top block and is fixedly connected to the piston.

[0007] As an improvement to the above technical solution: one side of the through groove is connected to a gas guide pipe, and the other end of the gas guide pipe extends movably through to the inner top side of the top block. A top hole is opened in the middle of the piston. A middle hole is opened at one end of the bottom block near the bottom pad layer. A bottom hole corresponding to several middle holes is opened at one end of the bottom pad layer near the bottom block.

[0008] As an improvement to the above technical solution: a spring is fixedly connected to the side of the piston near the middle hole, and the other end of the spring is fixedly connected to the inner wall of the bottom block near the middle hole.

[0009] As an improvement to the above technical solution: an elastic filler strip is inserted into the through groove, and the elastic filler strip is arranged in a mesh pattern.

[0010] As an improvement to the above technical solution: the drying assembly includes a drying component fixedly connected to the drying frame and several desiccants placed in the drying frame. The drying component includes a miniature exhaust fan. The exhaust end of the miniature exhaust fan is fixedly connected to an exhaust pipe. An electric heating element is installed inside the exhaust pipe. The air supply end of the miniature exhaust fan is fixedly connected to an exhaust pipe.

[0011] As an improvement to the above technical solution: a zipper is installed at one end of the pad, and an opening is provided at one end of the bottom padding layer.

[0012] As an improvement to the above technical solution, it also includes a connecting strip, on one side of which a plurality of plugs corresponding to the through groove are fixedly connected.

[0013] The second objective of this invention is to provide a method for preparing PP cotton-filled sofa cushions. Using the aforementioned PP cotton-filled sofa cushions, the preparation method includes the following steps:

[0014] Step 1, filling: First, open several through grooves in the PP cotton filling layer, then fill the through grooves with elastic filling strips so that the multiple through grooves in the PP cotton filling layer are filled with elastic filling strips, and then seal one end of the through groove with the plug block.

[0015] Several holes are made on one side of the bottom padding layer. The drying components are installed into the drying frame, several desiccants are placed into the drying frame, and then the drying frame is inserted into the bottom padding layer.

[0016] Step 2, Fixing: After inserting one end of the air guide tube into the through groove, glue one side of the top plate to one side of the PP cotton filling layer with adhesive, and insert the other end of the air guide tube into the top block;

[0017] One end of the base block is glued and fixed to the bottom padding layer;

[0018] Step 3, Integration: First, insert the top block connected to the PP cotton filling layer into the bottom block, so that the PP cotton filling layer and the bottom cushion layer are connected together to form a cushion body. Then, put the cushion body into the cushion cover. Finally, tighten the zipper on the cushion cover to integrate it into a complete PP cotton filled sofa cushion.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. When in use, the moisture-proof layer first provides initial moisture protection for the PP cotton filling layer. The moisture in the channel is then introduced into the drying frame inside the bottom padding layer through the air guide pipe, top hole, middle hole and bottom hole. The moisture is further dried by the drying component, removing moisture from the PP cotton filling layer.

[0021] 2. When the user sits on the PP cotton filling layer, the downward pressure on the PP cotton filling layer allows the moisture inside the PP cotton filling layer to enter the channel. The piston is pushed down by the top plate and guide rod to move inside the top block, so that the moisture in the channel is drawn into the drying frame in the bottom cushion layer through the air pipe and bottom hole. The moisture is then dried by the drying component, thereby strengthening the drying of the PP cotton filling layer.

[0022] 3. After prolonged use of the sofa cushions described in this application, open the zipper on the cushion cover, pull out the connecting strip and the plug, and operate the mini exhaust fan and electric heating element. The electric heating element generates heat, which on the one hand can dry the desiccant that has been absorbing moisture for a long time, making the drying parts reusable and improving the drying effect. On the other hand, the generated hot air is introduced into the PP cotton filling layer and the through groove through the bottom hole and air guide pipe, which fully dries the PP cotton filling layer and prevents the sofa cushion from rotting due to indoor moisture. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the overall structure of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram of the pad in this invention;

[0025] Figure 3 for Figure 1 Enlarged structural diagram at point A;

[0026] Figure 4 This is a three-dimensional structural diagram of the drying frame in this invention;

[0027] Figure 5 This is a schematic diagram of the elastic filler strip in this invention;

[0028] Figure 6 This is a schematic diagram of the drying component in this invention;

[0029] Figure 7 This is a schematic diagram of the connecting strip in this invention.

[0030] Reference numerals: 1. Pad; 11. Moisture-proof layer; 2. PP cotton filling layer; 20. Through groove; 3. Ventilation component; 31. Bottom block; 32. Top block; 33. Piston; 331. Top hole; 332. Middle hole; 34. Guide rod; 35. Top plate; 36. Air duct; 37. Spring; 4. Bottom pad layer; 40. Bottom hole; 41. Opening; 5. Drying frame; 51. Desiccant; 6. Elastic filling strip; 7. Drying component; 70. Mini exhaust fan; 71. Exhaust pipe; 72. Exhaust pipe; 73. Heating element; 8. Connecting strip; 81. Block. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0032] Example 1:

[0033] See Figures 1-7 This embodiment provides a PP cotton filled sofa cushion, including a cushion cover 1 and a cushion body. The cushion body can be accommodated inside the cushion cover 1. A moisture-proof layer 11 is fixedly connected to the inner side of the cushion cover 1. The cushion body includes a PP cotton filling layer 2 and a bottom soft pad layer 4. Specifically, the PP cotton filling layer 2 is a polypropylene fiber material layer. Several ventilation components 3 are provided between the PP cotton filling layer 2 and the bottom soft pad layer 4. Several through grooves 20 are opened along the length direction of the PP cotton filling layer 2. Specifically, one end of the through groove 20 extends to the outer side of one end of the PP cotton filling layer 2. A drying frame 5 is provided in the inner cavity of the bottom soft pad layer 4. A drying component is provided in the drying frame 5. The moisture in the through groove 20 is introduced into the drying frame 5 through the ventilation components 3, and then the moisture is dried by the drying component.

[0034] In an optional embodiment: the ventilation assembly 3 includes a bottom block 31 fixedly connected to the bottom padding layer 4 near the PP cotton filling layer 2. A top block 32 is inserted into one end of the bottom block 31 near the PP cotton filling layer 2. A piston 33 is inserted into the inside of the top block 32. A top plate 35 fixedly connected to the PP cotton filling layer 2 is provided at one end of the top block 32 near the PP cotton filling layer 2. Two guide rods 34 are fixedly connected to one side of the top plate 35 near the top block 32. The other end of the guide rods 34 slides through the inside of the top block 32 and is fixedly connected to the piston 33.

[0035] In an optional embodiment: a vent pipe 36 is connected to one side of the through groove 20, and the other end of the vent pipe 36 extends movably through to the inner top side of the top block 32. A top hole 331 is provided in the middle of the piston 33. A middle hole 332 is provided at one end of the bottom block 31 near the bottom padding layer 4. A bottom hole 40 corresponding to several middle holes 332 is provided at one end of the bottom padding layer 4 near the bottom block 31. Specifically, the moisture-proof layer can be a polyester material cloth layer, which has good waterproof and moisture-proof effects. When using this application normally, the moisture-proof layer 11 first provides a moisture-proof effect for the PP cotton filling layer 2. The moisture in the through groove 20 is sequentially introduced into the drying frame 5 inside the bottom padding layer 4 through the vent pipe 36, the top hole 331, the middle hole 332 and the bottom hole 40.

[0036] In an optional embodiment: a spring 37 is fixedly connected to the side of the piston 33 near the central hole 332, and the other end of the spring 37 is fixedly connected to the inner wall of the bottom block 31 near the central hole 332.

[0037] like Figure 3 As shown, in an optional embodiment: an elastic filling strip 6 is inserted into the through groove 20. The elastic filling strip 6 is arranged in a mesh pattern. The elastic filling strip 6 can maintain the shape of the through groove 20 within the PP cotton filling layer 2, ensuring that the moisture absorbed by the PP cotton filling layer 2 enters the through groove 20. When the user sits on the PP cotton filling layer 2, it will press the PP cotton filling layer 2 downward. The spring 37 can provide elasticity to the entire pad, improving the user's comfort. Furthermore, when the PP cotton filling layer 2 is pressed, it can be made larger. The internal moisture enters the channel 20 and is pushed downward by the top plate 35 and guide rod 34 to move the piston 33 inside the top block 32. This causes the moisture in the channel 20 to be drawn into the drying frame 5 in the bottom padding layer 4 through the air pipe 36 and bottom hole 40. The moisture is then dried by the drying component. When the user leaves the PP cotton filling layer 2, the spring 37 will cause the top plate 35 to return to its original position, which facilitates the next squeezing and drying of the PP cotton filling layer 2. This prevents the PP cotton filling layer 2 from absorbing moisture and rotting in a humid environment.

[0038] As shown in Figure 4, in an optional embodiment: the drying assembly includes a drying component 7 fixedly connected to the drying frame 5 and several desiccants 51 placed inside the drying frame 5. The drying component 7 includes a miniature exhaust fan 70, the exhaust end of the miniature exhaust fan 70 is fixedly connected to an exhaust pipe 71, an electric heating element 73 is installed inside the exhaust pipe 71, and the air supply end of the miniature exhaust fan 70 is fixedly connected to an exhaust pipe 72. Specifically, a filter screen is also fixedly connected to the inner wall of the exhaust pipe 71 to prevent external impurities from being sent into the drying component 7. A control switch electrically connected to the miniature exhaust fan 70 and the electric heating element 73 can be installed on the drying frame 5.

[0039] In an optional embodiment: a zipper is installed at one end of the pad 1, and an opening 41 is provided at one end of the bottom padding layer 4, through which the drying frame 5 can be easily inserted into the bottom padding layer 4.

[0040] In an optional embodiment, a connecting strip 8 is also included. Several plugs 81 corresponding to the through groove 20 are fixedly connected to one side of the connecting strip 8. When the PP cotton filling layer 2 is used normally, the through groove 20 is sealed by the plugs 81. Specifically, after the sofa cushion of this application has been used for a long time, the zipper on the cushion cover 1 is opened, the connecting strip 8 and the plugs 81 are pulled out, and the mini exhaust fan 70 and the electric heating tube 73 are turned on. The electric heating tube 73 generates heat, which on the one hand can dry the desiccant 51 that has been absorbing moisture for a long time, so that the drying component 7 can be reused. On the other hand, the generated hot air is introduced into the PP cotton filling layer 2 and the through groove 20 through the bottom hole 40 and the air guide pipe 36 to further dry the PP cotton filling layer 2.

[0041] Example 2:

[0042] See Figures 1-7 A method for preparing PP cotton-filled sofa cushions, using the aforementioned PP cotton-filled sofa cushions, includes the following steps:

[0043] Step 1, filling: First, open several through grooves 20 in the PP cotton filling layer 2, then fill the through grooves 20 with elastic filling strips 6, so that the multiple through grooves 20 in the PP cotton filling layer 2 are filled with elastic filling strips 6, and then seal one end of the through grooves 20 with the block block 81.

[0044] Several bottom holes 40 are made on one side of the bottom padding layer 4. The drying component 7 is installed into the drying frame 5. Several desiccants 51 are placed into the drying frame 5. Then the drying frame 5 is inserted into the bottom padding layer 4.

[0045] Step 2, Fixing: After inserting one end of the air guide tube 36 into the through groove 20, glue one side of the top plate 35 to one side of the PP cotton filling layer 2 with adhesive, and insert the other end of the air guide tube 36 into the top block 32; glue one end of the bottom block 31 to the bottom padding layer 4 with adhesive.

[0046] Step 3, Integration: First, insert the top block 32, which is connected to the PP cotton filling layer 2, into the bottom block 31, so that the PP cotton filling layer 2 and the bottom soft padding layer 4 are connected together to form a pad body. Then, put the pad body into the pad cover 1, and finally tighten the zipper on the pad cover 1 to integrate it into a complete PP cotton filled sofa cushion.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A PP cotton-filled sofa cushion, comprising a cushion cover (1) and a cushion body, wherein the cushion body is accommodated inside the cushion cover (1), characterized in that: A moisture-proof layer (11) is fixedly connected to the inner side of the pad (1). The pad body includes a PP cotton filling layer (2) and a bottom soft pad layer (4). Several ventilation components (3) are provided between the PP cotton filling layer (2) and the bottom soft pad layer (4). Several through grooves (20) are opened along the length direction of the PP cotton filling layer (2). A drying frame (5) is provided in the inner cavity of the bottom soft pad layer (4). A drying component is provided in the drying frame (5). The moisture in the through grooves (20) is introduced into the drying frame (5) through the ventilation components (3), and then the moisture is dried by the drying component. The ventilation assembly (3) includes a bottom block (31) fixedly connected to the bottom padding layer (4) near the PP cotton filling layer (2). A top block (32) is inserted into one end of the bottom block (31) near the PP cotton filling layer (2). A piston (33) is inserted into the inside of the top block (32). A top plate (35) fixedly connected to the PP cotton filling layer (2) is provided at one end of the top block (32). Two guide rods (34) are fixedly connected to one side of the top plate (35) near the top block (32). The other end of the guide rods (34) slides through the top block (32) and is fixedly connected to the piston (33).

2. The PP cotton-filled sofa cushion according to claim 1, characterized in that: One side of the through groove (20) is connected to an air guide pipe (36), and the other end of the air guide pipe (36) extends movably through to the inner top side of the top block (32). The piston (33) has a top hole (331) in the middle. The bottom block (31) has a middle hole (332) at one end near the bottom pad layer (4). The bottom pad layer (4) has a bottom hole (40) at one end near the bottom block (31) that corresponds to the same axis as several middle holes (332).

3. The PP cotton-filled sofa cushion according to claim 2, characterized in that: A spring (37) is fixedly connected to the side of the piston (33) near the middle hole (332), and the other end of the spring (37) is fixedly connected to the side of the inner wall of the bottom block (31) near the middle hole (332).

4. The PP cotton-filled sofa cushion according to claim 3, characterized in that: An elastic filler strip (6) is inserted into the through groove (20), and the elastic filler strip (6) is arranged in a mesh pattern.

5. The PP cotton-filled sofa cushion according to claim 4, characterized in that: The drying assembly includes a drying component (7) fixedly connected to the drying frame (5) and several desiccants (51) placed inside the drying frame (5). The drying component (7) includes a miniature exhaust fan (70). The exhaust end of the miniature exhaust fan (70) is fixedly connected to an exhaust pipe (71). An electric heating element (73) is installed inside the exhaust pipe (71). The air supply end of the miniature exhaust fan (70) is fixedly connected to an exhaust pipe (72).

6. The PP cotton-filled sofa cushion according to claim 5, characterized in that: One end of the pad (1) is fitted with a zipper, and one end of the bottom padding layer (4) has an opening (41).

7. The PP cotton-filled sofa cushion according to claim 6, characterized in that: It also includes a connecting strip (8), on one side of which a plurality of plugs (81) corresponding to the through groove (20) are fixedly connected.

8. A method for preparing PP cotton-filled sofa cushions, characterized in that: The method for preparing a sofa cushion filled with PP cotton as described in claim 7 includes the following steps: Step 1, filling: First, open several through grooves (20) in the PP cotton filling layer (2), then fill the through grooves (20) with elastic filling strips (6) so that the multiple through grooves (20) in the PP cotton filling layer (2) are filled with elastic filling strips (6), and then seal one end of the through grooves (20) with the plug (81); Several bottom holes (40) are made on one side of the bottom padding layer (4), the drying component (7) is installed into the drying frame (5), several desiccants (51) are placed into the drying frame (5), and then the drying frame (5) is inserted into the bottom padding layer (4); Step 2, Fixing: After inserting one end of the air guide tube (36) into the through groove (20), one side of the top plate (35) is glued to one side of the PP cotton filling layer (2) with adhesive, and the other end of the air guide tube (36) is inserted into the top block (32). One end of the bottom block (31) is glued to the bottom padding layer (4) and fixed; Step 3, integration: First, insert the top block (32) connected to the PP cotton filling layer (2) into the bottom block (31) so that the PP cotton filling layer (2) and the bottom padding layer (4) are connected together to form a cushion body. Then, put the cushion body into the cushion cover (1) and finally tighten the zipper on the cushion cover (1) to integrate it into a complete PP cotton filled sofa cushion.

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