Method for assisting opening and closing sewing of vertical lining type filling chamber in down and feather product through opening and closing auxiliary device

Abstract

The invention relates to the technical field of clothes, in particular to a method for assisting opening and closing sewing of a vertical lining type filling chamber in a down and feather product through an opening and closing auxiliary device, the down and feather product comprises first fabric and second fabric, and the first fabric and the second fabric are the same in size. A plurality of transverse vertical lining strips and longitudinal vertical lining strips are sewn on the first fabric and the second fabric, a plurality of vertical lining sections are obtained through cutting along the two ends of sewing threads of the longitudinal vertical lining strips, the plurality of vertical lining sections are sewn to form a transverse vertical lining surface, and the plurality of longitudinal vertical lining strips are sewn to form a longitudinal vertical lining surface; a filling chamber is defined by the transverse vertical lining face, the longitudinal vertical lining face, the first fabric and the second fabric, a transverse opening is formed in the filling chamber, down filling is conducted on the filling chamber through the transverse opening by adopting an opening and closing auxiliary device, and after down filling is completed, the opening and closing auxiliary device is fixed to the adjacent transverse vertical lining face and the longitudinal vertical lining face. After being fixed, the filling chambers can be sealed, so that the filling amounts in the filling chambers are equal, the filling materials do not flow mutually in the manufacturing process and the using process after finished products are manufactured, it is guaranteed that down distribution in the vertical lining down quilt is equal and balanced, the outer surface of the down quilt is smooth, and the quality, the product grade and the comfortable effect of the down quilt are improved.

Description

Technical Field

[0001] The present application relates to the technical field of clothing, and in particular to a method for sewing the opening and closing of a vertical lining-type filling chamber in a down product using an opening and closing auxiliary device. Background Art

[0002] In the prior art, when the home textile industry manufactures a down quilt with an inner standing lining process, it is necessary to sew a plurality of longitudinal and transverse standing lining strips on the inner side of the upper and lower layers of fabric of the down quilt, and there are more than 60 normally open interconnecting openings of 6cm×6cm formed on the left and right edges. The filling of the down quilt with the standing lining process can pass through the normally open interconnecting openings to independently and equally fill each filling chamber to achieve the effect of equal filling amount of the filling in each filling chamber and flat upper and lower surfaces. The defect of the manufacturing process of the down quilt with the standing lining process in the prior art is that the multiple normally open interconnecting openings formed in the filling area will cause the filling to flow to each other through the various normally open interconnecting openings during the manufacturing process and the use of the finished product, so the filling of each filling chamber cannot be kept equal and balanced. At the same time, after a long period of use, there will be defects of empty chambers and full chambers, and problems of uneven surface, which seriously affect the quality and use effect of the down quilt with the standing lining process. Summary of the invention

[0003] The purpose of the present application is to provide a method for sewing an opening and closing mouth for vertical lining filling in down products, so as to solve the technical problems of the vertical lining process down quilt of the prior art proposed in the above background technology that each filling chamber can be filled independently and evenly during the manufacturing process and the filling materials cannot flow with each other after the finished product is manufactured.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a method for sewing the opening and closing of a vertical lining filling chamber in a down product, including a process manufacturing technology for a vertical lining process down quilt filling chamber that can be opened during filling and closed after filling. The vertical lining process down quilt is provided with a plurality of filling chambers formed by sewing the longitudinal and transverse intersecting inner lining strips on the inner sides of the upper and lower layers of fabric, and an opening and closing auxiliary device is sewn at the normally open interconnecting openings formed on the front and back edges of the left and right sides of each filling chamber, so that each filling chamber can be opened or closed at the same time to provide convenient use.

[0005] 1. A method for sewing the opening and closing of a vertical lining filling chamber in a down product using an opening and closing auxiliary device, characterized in that:

[0006] The down product comprises: a first fabric and a second fabric, the first fabric and the second fabric are of the same size, a plurality of first transverse standing lining strips and a plurality of first longitudinal standing lining strips are sewn on the surface of the first fabric, and a plurality of second transverse standing lining strips and a plurality of second longitudinal standing lining strips are sewn on the surface of the second fabric;

[0007] The opening and closing auxiliary device comprises: an upper part of the opening and closing auxiliary device and a lower part of the opening and closing auxiliary device; the upper part of the opening and closing auxiliary device is a platform body surrounded by a flexible material, and both end surfaces of the platform body are open; the lower part of the opening and closing auxiliary device is a platform body surrounded by a flexible material, and both the top end surface and the bottom end surface of the platform body are open; the size of the upper part of the opening and closing auxiliary device is larger than that of the lower part of the opening and closing auxiliary device; the outer diameter of the smaller end surface of the upper part of the opening and closing auxiliary device is consistent with the outer diameter of the smaller end surface of the lower part of the opening and closing auxiliary device, and the two end surfaces fit together to form a telescopic opening of the opening and closing auxiliary device;

[0008] The first transverse lining strip, the first longitudinal lining strip, the second transverse lining strip, and the second longitudinal lining strip have the same width;

[0009] The first transverse vertical lining strip has the same size as the second transverse vertical lining strip;

[0010] The first vertical lining strip has the same size as the second vertical lining strip;

[0011] The method comprises:

[0012] Marking preset transverse sewing lines and longitudinal sewing lines on the first fabric, sewing all first transverse vertical lining strips on the first fabric along all preset transverse sewing lines, and then sewing all first longitudinal vertical lining strips on the first fabric along all preset longitudinal sewing lines;

[0013] Marking preset transverse sewing lines and longitudinal sewing lines on the second fabric, sewing all second transverse vertical lining strips on the second fabric along all preset transverse sewing lines, and then sewing all second longitudinal vertical lining strips on the second fabric along all preset longitudinal sewing lines;

[0014] On the first fabric, cut along the left and right sides of all the longitudinal sewing lines sewn on the first transverse standing lining strips to divide the plurality of first transverse standing lining strips into a plurality of first standing lining segments;

[0015] On the second fabric, cut along the left and right sides of all the longitudinal sewing lines sewn on the second transverse standing lining strips to divide the plurality of second transverse standing lining strips into a plurality of second standing lining segments;

[0016] The first vertical lining strip and the second vertical lining strip are erected and joined to form a vertical lining surface, and a vertical lining strip joint line is formed on the vertical lining surface;

[0017] Each of the first standing lining segments and the opposite second standing lining segments are stood upright and joined together to form a transverse standing lining surface, and a transverse standing lining joint line is formed on the transverse standing lining surface;

[0018] The longitudinal standing lining surfaces, the transverse standing lining surfaces, the first fabric and the second fabric together form a plurality of filling chambers;

[0019] There is a transverse opening between each longitudinal standing lining surface and the adjacent transverse standing lining surface;

[0020] The opening and closing auxiliary device is placed at the transverse opening, the upper part of the opening and closing auxiliary device and the lower part of the opening and closing auxiliary device are respectively located at two adjacent filling chambers, the telescopic opening of the opening and closing auxiliary device is just located at the transverse opening, and the transverse vertical lining surface and the longitudinal vertical lining surface of the opening and closing auxiliary device adjacent to the transverse opening are fixed at the same time;

[0021] When filling the filling chamber with down, the filling tool passes through the telescopic opening of the opening and closing mouth auxiliary device and extends into the filling chamber to be filled with down for filling. The telescopic opening of the opening and closing mouth auxiliary device is provided with an elastic hoop. After the filling is completed, the filling tool is pulled out, the telescopic opening of the opening and closing mouth auxiliary device is automatically closed, and the opening and closing mouth auxiliary device remains in its original place.

[0022] 2. The method according to item 1 is characterized in that the total length of the opening and closing auxiliary device is 6cm-9cm.

[0023] 3. The method according to item 1 is characterized in that the opening and closing auxiliary device is fixed to the transverse standing lining surface and the longitudinal standing lining surface adjacent to the transverse opening by sewing or bonding.

[0024] The beneficial effects of this application are:

[0025] 1. The present application provides an opening and closing auxiliary device connected to the lateral opening of the filling chamber, so that the filling chamber of the vertical lining type down quilt can be independently filled and closed.

[0026] 2. The filling opening is realized through the opening and closing auxiliary device, and the opening is closed immediately after filling to make the filling amount in each filling chamber equal. The filling materials will not flow to each other during the manufacturing process and the use of the finished product, ensuring that the down inside the vertical lining down quilt is evenly distributed and the outer surface of the down quilt is smooth, thereby improving the quality of the down quilt, product grade and comfort effect.

[0027] 3. This application uses a single-circle shrinkage or double-circle shrinkage to improve the sealing effect through the setting of an opening and closing auxiliary device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to better understand the present application and do not constitute an improper limitation on the present application.

[0029] Figure 1 A partial schematic diagram of an inner lining type down quilt provided by the present application is shown;

[0030] Figure 2 A partial schematic diagram of an inner lining type down quilt provided by the present application is shown;

[0031] Figure 3A partial schematic diagram of the transverse opening of the inner lining type down quilt provided by the present application is shown;

[0032] Figure 4 A three-dimensional diagram of the opening and closing auxiliary device provided by the present application is shown;

[0033] Figure 5 A top view of the opening and closing auxiliary device provided by the present application is shown.

[0034] 1-inner lining duvet, 2-first fabric, 3-second fabric, 4-first longitudinal lining strip, 5-second longitudinal lining strip, 6-longitudinal lining surface, 7-first transverse lining strip, 8-second transverse lining strip, 9-transverse lining surface, 10-crossing line of transverse and longitudinal lining surfaces, 11-transverse opening, 12-filling chamber, 13-opening and closing auxiliary device, 131-upper part of opening and closing auxiliary device, 132-lower part of opening and closing auxiliary device, 133-telescopic opening of opening and closing auxiliary device. DETAILED DESCRIPTION

[0035] The specific embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the specific embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0036] It should be noted that certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that technicians may use different nouns to refer to the same component. This specification and claims do not use the difference in nouns as a way to distinguish components, but use the difference in the functions of the components as the criterion for distinction. As mentioned throughout the specification and claims, "including" or "comprising" is an open term, so it should be interpreted as "including but not limited to". The subsequent description of the specification is a preferred embodiment of the implementation of the present application, but the description is based on the general principles of the specification and is not used to limit the scope of the present application. The scope of protection of the present application shall be determined by the attached claims.

[0037] The present application discloses a method for sewing an opening and closing mouth of a vertical lining type filling chamber in a down product, wherein the down product comprises: a first fabric 2 and a second fabric 3, wherein the first fabric 2 and the second fabric 3 are of the same size, a plurality of first transverse vertical lining strips 7 and a plurality of first longitudinal vertical lining strips 4 are sewn on the surface of the first fabric 2, and a plurality of second transverse vertical lining strips 8 and a plurality of second longitudinal vertical lining strips 5 are sewn on the surface of the second fabric 3.

[0038] The present application discloses an opening and closing auxiliary device 13, which includes: an opening and closing auxiliary device upper part 131 and an opening and closing auxiliary device lower part 132; the opening and closing auxiliary device upper part 131 is a platform surrounded by flexible material, and both end surfaces of the platform are open; the opening and closing auxiliary device lower part 132 is a platform surrounded by flexible material, and both the top end surface and the bottom end surface of the platform are open; the opening and closing auxiliary device upper part 131 is larger than the opening and closing auxiliary device lower part 132; the outer diameter of the smaller end surface of the opening and closing auxiliary device upper part 131 is consistent with the outer diameter of the smaller end surface of the opening and closing auxiliary device lower part 132, and the two end surfaces are in contact with each other, forming a telescopic opening 133 of the opening and closing auxiliary device.

[0039] In a specific embodiment of the present application, the first transverse lining strip 7, the first longitudinal lining strip 4, the second transverse lining strip 8, and the second longitudinal lining strip 5 have the same width.

[0040] In a specific embodiment of the present application, the first transverse standing strip 7 and the second transverse standing strip 8 have the same size.

[0041] In a specific embodiment of the present application, the first longitudinal lining strip 4 and the second longitudinal lining strip 5 have the same size.

[0042] The present application provides a method for using an opening and closing auxiliary device to assist in sewing the opening and closing of a vertical lining filling chamber in a down product, the method comprising: marking preset transverse sewing lines and longitudinal sewing lines on a first fabric 2, sewing all first transverse vertical lining strips 7 on the first fabric 2 along all preset transverse sewing lines, and then sewing all first longitudinal vertical lining strips 4 on the first fabric 2 along all preset longitudinal sewing lines, marking preset transverse sewing lines and longitudinal sewing lines on a second fabric 3, sewing all second transverse vertical lining strips 8 on the second fabric 3 along all preset transverse sewing lines, and then sewing all second longitudinal vertical lining strips 8 on the second fabric 3 along all preset longitudinal sewing lines, and on the first fabric 2, The left and right sides of the longitudinal sewing line of a transverse standing lining strip 7 are cut to divide multiple first transverse standing lining strips 7 into multiple first standing lining segments; on the second fabric 3, the left and right sides of all the longitudinal sewing lines sewn on the second transverse standing lining strips 8 are cut to divide most of the second transverse standing lining strips 8 into multiple second standing lining segments; the first longitudinal standing lining strip 5 is sewn together with the second longitudinal standing lining strip 5 to form a longitudinal standing lining surface 6, and a longitudinal standing strip seam line is formed on the longitudinal standing lining surface 6; each first standing lining segment is sewn together with the corresponding second standing lining segment to form a transverse standing lining surface 9, and a transverse standing lining seam line is formed on the transverse standing lining surface 9; the longitudinal standing lining surfaces 6, transverse standing lining surfaces 9, the first fabric 2, and the second fabric 3 together enclose a plurality of filling chambers 12. There is a transverse opening 11 between each longitudinal vertical lining surface 6 and the adjacent transverse vertical lining surface 9, the opening and closing auxiliary device 13 is placed at the transverse opening 11, the upper part 131 and the lower part 132 of the opening and closing auxiliary device are respectively located at two adjacent filling chambers 12, the opening and closing auxiliary device shrinkage 133 is just located at the transverse opening 11, and the opening and closing auxiliary device 13 and the transverse vertical lining surface 9 and the longitudinal vertical lining surface 6 adjacent to the transverse opening 11 are fixed at the same time. When filling the filling chamber 12, the filling tool passes through the opening and closing auxiliary device 13 and extends into the filling chamber 12 to be filled for filling. The telescopic opening 133 of the opening and closing auxiliary device is provided with an elastic hoop. After the filling is completed, the filling tool is pulled out, the telescopic opening 133 of the opening and closing auxiliary device is automatically closed, and the opening and closing auxiliary device 13 remains in its original place.

[0043] In a specific embodiment of the present application, the total length of the opening and closing auxiliary device 13 is 6cm-9cm, for example, it can be 6.0cm, 6.1cm, 6.2cm, 6.3cm, 6.4cm, 6.5cm, 6.6cm, 6.7cm, 6.8cm, 6.9cm, 7.0cm, 7.1cm, 7.2cm, 7.3cm, 7.4cm, 7.5cm, 7.6cm, 7.7cm, 7.8cm, 7.9cm, 8.0cm, 8.1cm, 8.2cm, 8.3cm, 8.4cm, 8.5cm, 8.6cm, 8.7cm, 8.8cm, 8.9cm, 9.0cm.

[0044] In a specific embodiment of the present application, the opening and closing auxiliary device 13 is made of a flexible material, which is relatively thin and elastic.

[0045] In a specific embodiment of the present application, the opening and closing auxiliary device 13 is fixed to the transverse standing lining surface 9 and the longitudinal standing lining surface 6 by sewing or bonding.

[0046] In a specific embodiment of the present application, the end surface of the lower portion 132 of the opening and closing auxiliary device is a circular through hole of the same size as the telescopic opening 133 of the opening and closing auxiliary device.

[0047] In a specific embodiment of the present application, the opening and closing auxiliary device 13 is a single-circle shrinking or a double-circle shrinking.

[0048] See also Figure 1 The present application provides an embodiment, a lining duvet 1 having a first fabric 2 and a second fabric 3 .

[0049] See also Figure 2 , Figure 2 The embodiment shows a part of the vertical lining duvet 1, and there is no edge of the vertical lining duvet 1. Figure 2 The contents shown are described, and the number of features described does not limit the scheme disclosed in the present application. Three transverse sewing lines and three longitudinal sewing lines are marked on the first fabric 2 to preset, and all the first transverse vertical lining strips 7 are sewn on the first fabric 2 along the preset three transverse sewing lines, and then all the first longitudinal vertical lining strips 4 are sewn on the first fabric 2 along the preset three longitudinal sewing lines. According to the preset transverse sewing lines and longitudinal sewing lines on the first fabric 2, the same number of transverse sewing lines and longitudinal sewing lines are marked on the second fabric 3 to preset, and all the second transverse vertical lining strips 8 are sewn on the second fabric 3 along the preset three transverse sewing lines, and then all the second longitudinal vertical lining strips 8 are sewn on the second fabric 3 along the preset three longitudinal sewing lines.

[0050] On the first fabric 2, cut along the left and right sides of all the longitudinal seams sewn on the first transverse vertical lining strip 7, and cut as close to the longitudinal seams as possible during the cutting process to obtain a plurality of first vertical lining segments divided by the first transverse vertical lining strip 7 after cutting. Repeat the above action on the second fabric 3 to obtain a plurality of second vertical lining segments divided by the second transverse vertical lining strip 7 after cutting. Stand the first longitudinal vertical lining strip 5 and the second longitudinal vertical lining strip 5 upright and sew them together to form a longitudinal vertical lining surface 6, and form a longitudinal vertical lining strip seam line on the longitudinal vertical lining surface 6. Stand each first vertical lining segment and the corresponding second vertical lining segment upright and sew them together to form a transverse vertical lining surface 9, and form a transverse vertical lining seam line on the transverse vertical lining surface 9.

[0051] The longitudinal lining surface 6, the transverse lining surface 9, the first fabric 2, and the second fabric 3 are combined to form a Figure 2 There are 4 filling chambers 12 in it.

[0052] See also Figure 3 Due to the cutting, each horizontal vertical lining surface 9 and the vertical vertical lining surface 6 are as close to each other as possible but not connected. Assuming that there is a horizontal and vertical vertical lining surface intersection line 10 when they are connected, there is actually a horizontal opening 11 between each horizontal and vertical vertical lining surface intersection line 10. The structure of the opening and closing auxiliary device 13 is as follows Figure 4 and Figure 5 As shown, the opening and closing auxiliary device 13 made of nylon material is used to fill the filling chamber 12 through the transverse opening 11. The specific operation of filling the filling chamber 12 to be filled with down is to pass the opening and closing auxiliary device 13 through the transverse opening 11, and keep the telescopic opening 133 of the opening and closing auxiliary device as much as possible in the same plane as the transverse vertical lining surface 9, while the upper part 131 of the opening and closing auxiliary device faces the filling chamber 12 to be filled with down, and the lower part 132 of the opening and closing auxiliary device faces the adjacent filling chamber 12 (the adjacent filling chamber 12 specifically refers to the adjacent filling chamber sharing the same transverse vertical lining surface 9), keep the opening and closing auxiliary device 13 as parallel to the longitudinal vertical lining surface as much as possible, and keep the opening and closing auxiliary device 13 in the existing position and the transverse vertical lining strip 9 and the longitudinal vertical lining strip 6 closest to it by sewing. After the sewing and fixing are completed, the filling tool is extended into the filling chamber 12 to be filled with down through the opening and closing auxiliary device to fill the down, and after the quantitative filling is completed, the filling tool is pulled out of the closing auxiliary device 13 to complete a filling operation.

[0053] 1. The present application provides an opening and closing auxiliary device connected to the lateral opening of the filling chamber, so that the filling chamber of the vertical lining type down quilt can be independently filled and closed.

[0054] 2. The filling opening is realized through the opening and closing auxiliary device, and the opening is closed immediately after filling to make the filling amount in each filling chamber equal. The filling materials will not flow to each other during the manufacturing process and the use of the finished product, ensuring that the down inside the vertical lining down quilt is evenly distributed and the outer surface of the down quilt is smooth, thereby improving the quality of the down quilt, product grade and comfort effect.

[0055] 3. This application uses a single-circle shrinking or double-circle telescopic opening to improve the sealing effect through the opening and closing auxiliary device.

[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for sewing the opening and closing of a vertical lining filling chamber in a down product using an opening and closing auxiliary device, characterized in that: The down product comprises: a first fabric and a second fabric, the first fabric and the second fabric are of the same size, a plurality of first transverse standing lining strips and a plurality of first longitudinal standing lining strips are sewn on the surface of the first fabric, and a plurality of second transverse standing lining strips and a plurality of second longitudinal standing lining strips are sewn on the surface of the second fabric; The opening and closing auxiliary device comprises: an upper part of the opening and closing auxiliary device and a lower part of the opening and closing auxiliary device; the upper part of the opening and closing auxiliary device is a platform body surrounded by a flexible material, and both end surfaces of the platform body are open; the lower part of the opening and closing auxiliary device is a platform body surrounded by a flexible material, and both the top end surface and the bottom end surface of the platform body are open; the size of the upper part of the opening and closing auxiliary device is larger than that of the lower part of the opening and closing auxiliary device; the outer diameter of the smaller end surface of the upper part of the opening and closing auxiliary device is consistent with the outer diameter of the smaller end surface of the lower part of the opening and closing auxiliary device, and the two end surfaces fit together to form a telescopic opening of the opening and closing auxiliary device; The first transverse lining strip, the first longitudinal lining strip, the second transverse lining strip, and the second longitudinal lining strip have the same width; The first transverse vertical lining strip has the same size as the second transverse vertical lining strip; The first vertical lining strip has the same size as the second vertical lining strip; The method comprises: Marking preset transverse sewing lines and longitudinal sewing lines on the first fabric, sewing all first transverse vertical lining strips on the first fabric along all preset transverse sewing lines, and then sewing all first longitudinal vertical lining strips on the first fabric along all preset longitudinal sewing lines; Marking preset transverse sewing lines and longitudinal sewing lines on the second fabric, sewing all second transverse vertical lining strips on the second fabric along all preset transverse sewing lines, and then sewing all second longitudinal vertical lining strips on the second fabric along all preset longitudinal sewing lines; On the first fabric, cut along the left and right sides of all the longitudinal sewing lines sewn on the first transverse standing lining strips to divide the plurality of first transverse standing lining strips into a plurality of first standing lining segments; On the second fabric, cut along the left and right sides of all the longitudinal sewing lines sewn on the second transverse standing lining strips to divide the plurality of second transverse standing lining strips into a plurality of second standing lining segments; The first vertical lining strip and the second vertical lining strip are erected and joined to form a vertical lining surface, and a vertical lining strip joint line is formed on the vertical lining surface; Each of the first standing lining segments and the opposite second standing lining segments are stood upright and joined together to form a transverse standing lining surface, and a transverse standing lining joint line is formed on the transverse standing lining surface; The longitudinal standing lining surfaces, the transverse standing lining surfaces, the first fabric and the second fabric together form a plurality of filling chambers; There is a transverse opening between each longitudinal standing lining surface and the adjacent transverse standing lining surface; The opening and closing auxiliary device is placed at the transverse opening, the upper part of the opening and closing auxiliary device and the lower part of the opening and closing auxiliary device are respectively located at two adjacent filling chambers, the telescopic opening of the opening and closing auxiliary device is just located at the transverse opening, and the transverse vertical lining surface and the longitudinal vertical lining surface of the opening and closing auxiliary device adjacent to the transverse opening are fixed at the same time; When filling the filling chamber with down, the filling tool passes through the telescopic opening of the opening and closing mouth auxiliary device and extends into the filling chamber to be filled with down for filling. The telescopic opening of the opening and closing mouth auxiliary device is provided with an elastic hoop. After the filling is completed, the filling tool is pulled out, the telescopic opening of the opening and closing mouth auxiliary device is automatically closed, and the opening and closing mouth auxiliary device remains in its original place.

2. The method according to claim 1, characterized in that The total length of the opening and closing auxiliary device is 6cm-9cm.

3. The method according to claim 1, characterized in that The opening and closing auxiliary device is fixed to the transverse standing lining surface and the longitudinal standing lining surface adjacent to the transverse opening by sewing or bonding.

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