Micro pocket coil pad structure

Abstract

To provide a micro pocket coil pad structure in the technical field of furniture products. The cushion includes a lining fabric layer (10), a spring layer (20), and an adhesive-free cotton layer (30). The lining fabric layer encases the spring layer and the adhesive-free cotton layer. The spring layer includes a plurality of microsprings (210) arranged in a rectangular pattern, and a first polypropylene nonwoven fabric (220) and a second polypropylene nonwoven fabric (230) attached to the upper and lower ends of the springs. The first and second polypropylene nonwoven fabrics are ultrasonically welded to form multiple cavities for accommodating the microsprings. In the spring layer, the first and second polypropylene nonwoven fabrics cover the microsprings from above and below and are ultrasonically welded, eliminating the need for secondary bonding or adhesion, resulting in high production efficiency. Each microspring is located in a different cavity between the first and second polypropylene nonwoven fabrics, providing more precise support. The adhesive-free cotton layer is also provided between the lining fabric layer and the spring layer to reduce the stiffness of the microsprings and provide greater comfort. Therefore, the micro pocket coil pad structure can be applied to soft surface furniture such as pillows, seat cushions, mattresses, etc.

Description

[Technical Field]

[0001] The present invention relates to the technical field of furniture products, and in particular to a micro-pocket coil pad structure. [Background technology]

[0002] Springs are often used as core materials in soft surface furniture due to their high resilience and durability.

[0003] When manufacturing spring cores for soft-surface furniture, multiple springs are typically sealed in individual spaces within a spring bag. These spring bags are typically made by stacking two vertical layers of nonwoven fabric strips, which are welded together at regular intervals to form a continuous pocket coil. A spring core is then formed by arranging and bonding multiple such continuous pocket coils. This connection method currently has the following problems: 1. The connections between the continuous pocket coils are weak and unstable. 2. The need for adhesive to bond the continuous pocket coils not only reduces production efficiency and increases costs, but also generates pungent gases due to the large amount of adhesive used, which can affect user comfort. Summary of the Invention [Means for solving the problem]

[0004] SUMMARY OF THE INVENTION The purpose of the present invention is to provide a micro pocket coil pad structure to solve the problems encountered in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: A micro pocket coil pad structure, a lining fabric layer encasing a spring layer and an adhesive-free cotton layer therein; a spring layer including a plurality of microspring bodies distributed in a rectangular shape and a first polypropylene nonwoven fabric and a second polypropylene nonwoven fabric provided at the upper and lower ends of the springs, the first polypropylene nonwoven fabric and the second polypropylene nonwoven fabric being ultrasonically welded to form a plurality of cavities for accommodating the microspring bodies; and an adhesive-free cotton layer disposed between the lining fabric layer and the spring layer.

[0006] Furthermore, the total number of turns of the microspring body is 3 to 4 turns, and the effective number of turns is 1 to 2 turns.

[0007] Furthermore, the microspring has a height of 2 cm to 4 cm, a diameter of 3 cm to 4 cm, and a wire diameter of 1 mm to 1.5 mm.

[0008] Furthermore, the ends of the microspring body are bent inward.

[0009] Furthermore, the first polypropylene nonwoven fabric and the second polypropylene nonwoven fabric are arranged horizontally and ultrasonically welded together to form a plurality of vertical weld lines and a plurality of horizontal weld lines, and the vertical weld lines and the horizontal weld lines intersect to form a cavity.

[0010] Furthermore, two layers of the adhesive-free cotton layer are provided, one on the upper surface and one on the lower surface of the spring layer.

[0011] Compared with the prior art, the present invention has the following advantageous effects: An inner fabric layer is used to encase the spring layer and the adhesive-free cotton layer. In the spring layer, a first polypropylene nonwoven fabric and a second polypropylene nonwoven fabric are arranged above and below the microspring bodies, and they are ultrasonically welded, eliminating the need for secondary bonding or gluing, resulting in high production efficiency. Each microspring body is located in a different cavity between the first polypropylene nonwoven fabric and the second polypropylene nonwoven fabric, providing more precise support. Furthermore, the adhesive-free cotton layer reduces the stiffness of the microspring bodies, providing greater comfort. Therefore, this pocket coil pad structure can be used in soft-surface furniture such as pillows, seat cushions, and mattresses. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is an exploded view of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of the present invention. [Explanation of symbols]

[0013] Lining fabric layer 10, spring layer 20, microspring body 210, first polypropylene nonwoven fabric 220, second polypropylene nonwoven fabric 230, cavity 240, adhesive-free cotton layer 30. DETAILED DESCRIPTION OF THE INVENTION

[0014] The invention is further described below in conjunction with the accompanying drawings, Figures 1 to 3.

[0015] As shown in Figures 1 and 2, the micro pocket coil pad structure provided by the present invention includes a lining fabric layer 10, a spring layer 20, and an adhesive-free cotton layer 30. The lining fabric layer 10 encases the spring layer 20 and the adhesive-free cotton layer 30. The spring layer 20 includes a plurality of microspring bodies 210 arranged in a rectangular pattern, and a first polypropylene nonwoven fabric 220 and a second polypropylene nonwoven fabric 230 attached to the upper and lower ends of the springs. The first polypropylene nonwoven fabric 220 and the second polypropylene nonwoven fabric 230 are ultrasonically welded together, horizontally arranged, and ultrasonically welded to form a plurality of longitudinal weld lines and a plurality of transverse weld lines. The longitudinal weld lines and the transverse weld lines intersect to form cavities 240 for accommodating the microspring bodies 210. The microspring bodies 210 are ultrasonically welded from above and below, eliminating the need for secondary bonding or adhesion, resulting in high production efficiency and low costs. Furthermore, each microspring body 210 is located in a different cavity 240 between the first polypropylene nonwoven fabric 220 and the second polypropylene nonwoven fabric 230, providing more precise support. Two layers of adhesive-free cotton layers 30 are provided, partially disposed between the upper and lower surfaces of the lining fabric layer 10 and the spring layer 20, and the adhesive-free cotton layers 30 reduce the hardness of the microspring body 210, providing better comfort.

[0016] In this embodiment, the microspring body 210 has a total number of turns of 4, an effective number of turns of 1.5, a height of 2.2 cm, a diameter of 3 cm, and a wire diameter of 1 mm. It should be understood that the microspring body 210 is primarily used in soft-surface furniture that requires a low height, such as pillows and seat cushions.

[0017] In this embodiment, the ends of the microspring body 210 are bent inward to prevent them from protruding and damaging the polypropylene nonwoven fabric.

[0018] It should further be appreciated that the micro-pocket coil pad structure can also be used as the inner core of some low profile mattresses.

[0019] Although embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A micro pocket coil pad structure, a lining fabric layer (10) encasing a spring layer (20) and an adhesive-free cotton layer (30) therein; a spring layer (20) including a plurality of microspring bodies (210) distributed in a rectangular shape, and a first polypropylene nonwoven fabric (220) and a second polypropylene nonwoven fabric (230) provided at the upper and lower ends of the springs, wherein the first polypropylene nonwoven fabric (220) and the second polypropylene nonwoven fabric (230) are ultrasonically welded to form a plurality of cavities (240) for accommodating the microspring bodies (210); A micro pocket coil pad structure comprising an adhesive-free cotton layer disposed between a lining fabric layer (10) and a spring layer (20).

2. 2. The micro pocket coil pad structure according to claim 1, wherein the total number of turns of the micro spring body (210) is 3 to 4 turns, and the effective number of turns is 1 to 2 turns.

3. 2. The micro pocket coil pad structure according to claim 1, wherein the micro spring body (210) has a height of 2 cm to 4 cm, a diameter of 3 cm to 4 cm, and a wire diameter of 1 mm to 1.5 mm.

4. 2. The micro pocket coil pad structure of claim 1, wherein the ends of the micro spring body (210) are bent inward.

5. 2. The micro pocket coil pad structure of claim 1, wherein the first polypropylene nonwoven fabric (220) and the second polypropylene nonwoven fabric (230) are arranged horizontally and ultrasonically welded together to form a plurality of longitudinal weld lines and a plurality of transverse weld lines, and the longitudinal weld lines and the transverse weld lines intersect to form a cavity (240).

6. 2. The micro pocket coil pad structure according to claim 1, wherein the micro spring body (30) is provided in two layers, one on the upper surface and one on the lower surface of the spring layer (20).

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