A quilt core
By using a concealed lining process that involves sewing lining strips and pleats into the comforter shell, the problem of down leakage during the production and use of down comforters is solved, resulting in a more uniform down distribution and a higher down leakage prevention effect, while also improving the fabric's abrasion resistance and anti-mildew and insect-proof performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN FUANNA BEDDING & FURNISHING
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-31
AI Technical Summary
Existing down comforters are prone to down leakage during production and use, especially during the sewing machine quilting and blow-down processes, where down and feathers can easily escape through the needle holes.
The product employs a concealed internal lining process, which involves sewing the first and second lining strips along the X and Y axes on the surface of the duvet cover to form a filling grid. Pleats are also set inside the duvet cover to hide the needle holes after sewing. Polyester fiber fabric is used to reduce the probability of down leakage.
It significantly reduces the probability of down leakage during the production and use of down comforters, improves the uniformity of down distribution and comfort, and the use of polyester fiber fabric increases abrasion resistance and anti-mildew and insect-proof properties.
Smart Images
Figure CN224572494U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of home furnishing technology, specifically to a down-proof comforter core. Background Technology
[0002] Down comforters are a common type of comforter on the market. They are lightweight, do not weigh you down, and have excellent warmth retention, making them popular with consumers.
[0003] The comforter shell is made of high-count, high-density fabric. The fabric must not only be down-proof, but also breathable: according to national standards, the breathability (mm / s) should be ≥5.
[0004] There are generally two types of sewing techniques for down comforter shells: the cutting process and the standing-up process.
[0005] Cutting process: The down comforter is first vertically quilted to form several tubular strips, then filled with down, and gently patted evenly. Then, it is horizontally cut and quilted, and the upper and lower layers of fabric of the comforter are cut through and fixed.
[0006] Upholstery process: An upholstery is added between the upper and lower layers of fabric to form a box-like three-dimensional space structure. The process involves sewing first and then filling with down, and no quilting is required in the later stages.
[0007] In the cutting process, the down comforter is first vertically quilted to form several tubular strips, then filled with down, and gently patted evenly before being horizontally cut and quilted. During the sewing process, the upper and lower layers of fabric of the comforter are cut and fixed. The sewing machine needle and sewing thread may press down on some down or snag some down or down fibers, which are brought out of the comforter surface through the needle holes, causing down leakage. In the standing lining process, a standing lining is added between the upper and lower layers of fabric of the comforter to form a box-like three-dimensional space structure. The process of sewing first and then filling with down is adopted, and no further quilting with a sewing machine is used. During the sewing process of the upper and lower layers of the duvet cover and the inner lining, the surface fabric of the duvet cover and the inner lining are directly stacked together and quilted for fixation. The surface fabric of the duvet cover has needle holes after quilting. During the down filling process, the down is blown into the duvet cover chamber by a blower. Air will be discharged from the gaps in the duvet cover fabric and the needle holes in the surface fabric. At this time, the down and feathers will also be driven by the strong airflow to drill out from the needle holes and fabric pores on the duvet cover surface, forming down leakage. To address this, we propose a down-proof duvet filling. Utility Model Content
[0008] The purpose of this invention is to provide a down-proof comforter core to solve the problems mentioned in the background art.
[0009] To achieve the above objectives, this utility model provides the following technical solution: a down-proof comforter core, comprising a comforter shell, wherein a first lining strip is sewn at equal intervals along the X-axis direction on the surface of the comforter shell, and a second lining strip is sewn at equal intervals along the Y-axis direction on the surface of the comforter shell, wherein a plurality of filling compartments are formed in the area between the comforter shell, the first lining strip, and the second lining strip, wherein pleats are provided at the top and bottom of the comforter shell outside the first lining strip and the second lining strip, and the top and bottom ends of the first lining strip and the second lining strip are fixedly connected to the pleats at their top and bottom ends by sewing.
[0010] Preferably, the pleated area is located inside the quilt cover and forms a protruding folded fabric at one end. The first lining is sewn to the folded fabric at its location, and a first needle hole is formed at the sewn opening. The second lining is sewn to the folded fabric at its location, and a second needle hole is formed at the sewn opening.
[0011] Preferably, the fabric of the cover is made of polyester fiber.
[0012] Preferably, the inner lining strip of the filling cell has a down filling port for filling down.
[0013] Preferably, both the first pinhole and the second pinhole are located inside the shell.
[0014] Preferably, the first and second lining strips are overlapped at a depth of 1.5cm with the pleat at a depth of 1.5cm at their respective locations, and then sewn together using a sewing machine.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This utility model adopts a hidden internal lining process and adjusts the internal structure and quilting process of the duvet cover. After the quilting is completed, the fabric layer on the surface of the duvet cover will not produce obvious pinholes. In the subsequent down blowing process, the probability of down coming out of the pinholes with the airflow is greatly reduced.
[0017] 2. This utility model adjusts the internal structure and quilting process of the duvet cover. During quilting, the sewing machine needle penetrates the fabric from the bottom side of the duvet cover for fixation, instead of penetrating the fabric directly from top to bottom from the surface of the duvet cover to create obvious needle holes. The needle holes and stitches generated during quilting are hidden under the duvet cover, and no obvious needle holes appear on the surface of the duvet cover. This can greatly reduce the probability of down leakage during the down filling stage of the production process and during use. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the concealed vertical lining process structure of this utility model;
[0019] Figure 2This is a schematic diagram of the structure of the sewing machine needle and sewing thread of the present invention when they pass through the underside edge of the fabric.
[0020] Figure 3 This is a schematic diagram of the internal structure of the concealed vertical process of this utility model;
[0021] Figure 4 This is a schematic diagram of the external structure of the sewn-up shell of this utility model.
[0022] In the diagram: 1. Sheet; 2. First lining strip; 3. Second lining strip; 4. Filling compartment; 5. Filling opening; 6. Pleated area; 7. First pinhole; 8. Second pinhole. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1-4 This utility model provides a technical solution: a down-proof comforter core, including a comforter shell 1, with a first lining strip 2 sewn at equal intervals along the X-axis direction on the surface of the comforter shell 1, and a second lining strip 3 sewn at equal intervals along the Y-axis direction on the surface of the comforter shell 1, and a plurality of filling compartments 4 formed in the area between the comforter shell 1, the first lining strip 2 and the second lining strip 3.
[0025] The top and bottom of the outer shell 1 are provided with pleats 6 outside the first lining 2 and the second lining 3. The top and bottom of the first lining 2 and the second lining 3 are fixed to the pleats 6 at their top and bottom by sewing.
[0026] It should be noted that by setting a first lining strip 2 and a second lining strip 3 inside the duvet cover 1, the cooperation of the first lining strip 2 and the second lining strip 3 forms the vertical lining strip of the duvet cover 1, so that the internal space of the duvet cover 1 forms multiple filling compartments 4. The multiple filling compartments 4 are filled with down, so that the down is evenly distributed inside each filling compartment 4. This changes the traditional method of directly filling down inside the duvet cover 1, and avoids the situation where the down distribution is uneven due to the excessively large space for filling down in the past.
[0027] The pleated position 6 is located at one end inside the quilt cover 1, forming a protruding folded fabric. The first lining 2 is sewn and fixed to the folded fabric at its location, and a first needle hole 7 is formed at the sewn opening. The second lining 3 is sewn and fixed to the folded fabric at its location, and a second needle hole 8 is formed at the sewn opening.
[0028] It should be noted that by setting pleats 6 on the duvet cover 1, the pleats 6 are located inside the duvet cover 1, forming two protruding layers of fabric. The first lining tape 2 and the second lining tape 3 are sewn and fixed to the pleats 6 between the two protruding layers of fabric inside the duvet cover 1, so that the sewing needle holes are located inside the duvet cover 1. This adjusts the internal structure and quilting process of the duvet cover 1. After the quilting is completed, no obvious needle holes will be produced on the surface fabric layer of the duvet cover 1. In the subsequent down blowing process, the probability of down coming out of the needle holes with the airflow is greatly reduced.
[0029] The fabric of the duvet cover 1 is made of polyester fiber.
[0030] It should be noted that polyester fiber is a synthetic fiber with good abrasion resistance, wrinkle resistance, low moisture absorption, and colorfastness after dyeing. It is also mildew and insect resistant. Compared with natural fibers, it is cheaper and suitable for use as the fabric for duvet cover 1.
[0031] The inner lining strip of the filling compartment 4 has a down filling port 5 for filling down.
[0032] It should be noted that the down filling port 5 allows down to be filled into the filling compartment 4, so that each filling compartment 4 has an equal amount of down, making the overall thickness of the quilt uniform and more comfortable to use.
[0033] Both the first pinhole 7 and the second pinhole 8 are located inside the shell 1.
[0034] It should be noted that the first needle hole 7 and the second needle hole 8 after sewing are both hidden inside the duvet cover 1, so that there are no exposed needle holes on the surface of the duvet cover 1, thereby preventing more down from escaping.
[0035] The first lining strip 2 and the second lining strip 3 are overlapped with the pleated position 6 at a depth of 1.5cm at their respective locations, and then sewn together by a sewing machine.
[0036] It should be noted that during the production of the quilt core in this utility model, the quilt shell 1, the first lining strip 2 and the second lining strip 3 are cut and shaped according to the known production process, and are ready for the quilting process of standing lining.
[0037] Step 1: Set the sewing machine's stitch length and stitch spacing to 4-5 stitches / cm, and use a size 9 needle.
[0038] Step 2: Press the overlapping and sewing positions of the quilt shell 1, the first lining strip 2, and the second lining strip 3 inward to form a pleated position 6, with a depth of 1.5cm.
[0039] Step 3: Overlap each of the first lining tape 2 and the second lining tape 3 at a depth of 1.5cm with the pleat position 6 at a depth of 1.5cm. Sew according to the stitch length of 4-5 stitches / cm set on the sewing machine in Step 1.
[0040] Step 4: Complete the sewing of each box-shaped three-dimensional compartment according to the above procedures, leaving a 5-inch opening for filling.
[0041] Step 5: Using a blower, fill the chamber of duvet shell 1 with down according to the pre-set down filling weight for each compartment.
[0042] After completing step five, the down filling process, use a sewing machine to sew the down filling opening 5 closed, thus completing the production of the down comforter.
[0043] Furthermore, the terms “first,” “second,” “third,” and “fourth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as “first,” “second,” “third,” or “fourth” may explicitly or implicitly include at least one of those features.
[0044] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations 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 down-proof comforter core, characterized in that, The quilt includes a cover (1), the surface of which is equidistantly sewn with a first lining strip (2) along the X-axis and a second lining strip (3) equidistantly sewn along the Y-axis. The area between the quilt (1), the first lining strip (2) and the second lining strip (3) forms multiple filling cells (4). The top and bottom of the quilt (1) are provided with pleats (6) outside the first lining strip (2) and the second lining strip (3). The top and bottom of the first lining strip (2) and the second lining strip (3) are fixedly sewn together with the pleats (6) at their top and bottom ends.
2. The down-proof comforter core according to claim 1, characterized in that: The pleated part (6) is located inside the quilt cover (1) and forms a protruding folded fabric at one end. The first lining (2) is sewn and fixed to the folded fabric at its location, and a first needle hole (7) is formed at the sewn opening. The second lining (3) is sewn and fixed to the folded fabric at its location, and a second needle hole (8) is formed at the sewn opening.
3. The down-proof comforter core according to claim 1, characterized in that: The fabric of the cover (1) is made of polyester fiber.
4. A down-proof comforter core according to claim 1, characterized in that: The filling compartment (4) has a down filling port (5) on its inner upright lining for filling down.
5. A down-proof comforter core according to claim 2, characterized in that: The first pinhole (7) and the second pinhole (8) are both located inside the shell (1).
6. A down-proof comforter core according to claim 1, characterized in that: The first lining (2) and the second lining (3) are overlapped at a depth of 1.5cm with the pleated position (6) at a depth of 1.5cm, and then sewn together by a sewing machine.