Powder container lid preventing tab lifting and method of manufacturing the same

Abstract

This embodiment provides a powder container cap to prevent the pull tab from warping, comprising: a cap body, which is attached to a powder container and has an opening; and a sealing member, which is attached to the upper surface of the cap body and has a sealing body that covers the opening to seal it. A pull tab extends from a point on the outer edge of the sealing body, and the pull tab is bent and folded toward the upper surface of the sealing body to overlap with the sealing body. In the sealing body, a portion of the embossed area corresponding to the opening has an unembossed area, and an adhesive is provided in the unembossed area. A portion of the pull tab is adhered to the adhesive and fixed to the sealing member.

Description

Technical Field

[0001] This invention relates to a powder container lid for preventing the powder from warping and its manufacturing method. Background Technology

[0002] Existing powder containers for holding and storing a certain amount of powdered contents such as milk powder include: a cover portion attached to the upper side of the powder container and having an opening formed therein; a sealing element attached to the upper surface of the cover portion to seal the opening; and a pull tab (lug) extending from one end of the sealing element and bent toward the other side of the sealing element based on said end of the sealing element to overlap the upper surface of the sealing element.

[0003] On the other hand, in existing technologies, conveyor belts are used during the filling, assembly, and transport of powder containers. However, the tabs that are bent and overlapped on the upper surface of the powder container seal cannot be stably fixed to the upper surface of the seal. During assembly and transport, the bent parts can be lifted or hooked by external devices and torn or pulled apart, thus separating from the seal and opening the opening, causing powder leakage from the powder container. This problem is considered a persistent and intractable problem among those skilled in the art.

[0004] To address these issues, methods have been proposed using adhesives to bond the pull tab to the upper surface of the seal. However, due to the embossed texture on the seal's surface, the adhesive seeps into the embossed areas during application, making it difficult to ensure a strong bond between the pull tab and the adhesive. Furthermore, after the adhesive cures, the additional layer of adhesive beyond the embossed texture increases the height of the pull tab's contact area, causing the aforementioned problems to recur. Even when using double-sided tape as an adhesive between the pull tab and the seal, additional steps such as cutting the tape and removing the protective films from both sides are required, resulting in low manufacturing efficiency and significantly increased raw material costs. Moreover, the increased height of the pull tab's contact area due to the thickness of the double-sided tape itself remains unresolved. Summary of the Invention

[0005] The problem to be solved

[0006] The present invention is proposed to solve the above-mentioned problems and provides a powder container cap that prevents the pull tab from lifting and a method for manufacturing the same. It can ensure that the pull tab is not detached from the seal and is stably fixed during the process of filling powder into the powder container and assembling and conveying it.

[0007] Furthermore, the present invention provides a powder container cap that prevents the pull tab from warping and a method for manufacturing the same, which will not damage the embossing or sealing body even when strong pressure is applied to the contact area between the pull tab and the seal.

[0008] Furthermore, the present invention provides a powder container cap for preventing the pull tab from lifting and a method for manufacturing the same, which simplifies the manufacturing process and allows the use of a relatively inexpensive liquid adhesive as the bonding agent between the pull tab and the sealing body.

[0009] Problem Solution

[0010] An embodiment provides a powder container cap to prevent the pull tab from lifting, comprising: a cap body, which is attached to a powder container and has an opening; and a sealing member, which is attached to the upper surface of the cap body and has a sealing body that covers the opening to seal it. A pull tab extends from a point on the outer edge of the sealing body, and the pull tab is bent and folded toward the upper surface of the sealing body to overlap with the sealing body. In the sealing body, a portion of the embossed area corresponding to the opening has an unembossed area, and an adhesive is provided in the unembossed area. A portion of the pull tab is adhered to the adhesive and fixed to the sealing member.

[0011] In another aspect, the present invention provides a powder container cap to prevent the pull tab from lifting, wherein the adhesive can be a liquid adhesive (Glue) or double-sided tape.

[0012] In another aspect, the present invention provides a powder container cap for preventing the pull tab from lifting, wherein the pull tab is composed of a first part to a third part integrally formed therein, the first part being integrally connected to the sealing body, a second part located between the first part and the third part having a pull hole formed therein, and at least a portion of the lower side surface of the third part facing the unembossed area and attached to the adhesive.

[0013] On the other hand, the present invention provides a powder container lid that prevents the sheet from warping, wherein embossing is formed in the embossed area other than the unembossed area.

[0014] In another aspect, the method for manufacturing the powder container cap of the fourth item, which prevents the pull tab from lifting, includes the steps of: cutting a piece of material to prepare the cap body and the seal; attaching the cap body to the seal; applying an adhesive to the unembossed area; embossing the embossed area using a mold; and bending the pull tab to attach it to the sealing body.

[0015] On the other hand, the steps of embossing the embossed area include: preparing a main mold and an insert mold; installing the main mold on a mold support; inserting the insert mold into the insert insertion hole of the main mold and installing it on the mold support; and using the mold to emboss the embossed area.

[0016] On the other hand, the insert mold is divided into a first mold area to a third mold area. Embossing for preventing embossing loss is formed in the first mold area and the second mold area, excluding the third mold area between the first mold area and the second mold area. The first mold area and the second mold area have a height difference with the third mold area.

[0017] On the other hand, when the embossing treatment area is embossed, the third mold area faces the unembossed area.

[0018] Invention Effects

[0019] The embodiment provides a powder container cap that prevents the pull tab from lifting and a method for manufacturing the same, which can stably fix the pull tab in place during the process of filling powder into the powder container and assembling and conveying it.

[0020] The embodiment provides a powder container cap that prevents the pull tab from lifting and a method for manufacturing the same, which will not damage the embossing or sealing body even when strong pressure is applied to the contact area between the pull tab and the seal.

[0021] The embodiment makes the application of adhesive parts possible by changing the mold shape, forming an unembossed area on the sealing body, thereby preventing the phenomenon of missing embossing in the space around the unembossed area where embossing should be formed.

[0022] The embodiment provides a powder container cap for preventing the pull tab from lifting and a method for manufacturing the same, which simplifies the manufacturing process and allows the use of a relatively inexpensive liquid adhesive as the bonding agent between the pull tab and the sealing body. Attached Figure Description

[0023] Figure 1 This is a perspective view of a powder container lid for preventing the pull tabs from lifting according to an embodiment of the present invention.

[0024] Figure 2 This shows the powder container lid with the pull tab open to prevent it from warping.

[0025] Figure 3 and Figure 4 The diagram schematically shows the lid that forms the powder container lid to prevent the tablets from lifting.

[0026] Figure 5 The diagram schematically illustrates the seal that forms part of the powder container lid to prevent the pull tab from lifting.

[0027] Figure 6 This is a bottom view of a powder container lid for preventing the pull tabs from warping according to an embodiment of the present invention.

[0028] Figure 7 This is a view of the upper surface of a pull tab that serves as a sealing element.

[0029] Figure 8 schematically showing along Figure 1 The cross-section of the powder container lid is obtained by C1-C2 wire cutting.

[0030] Figure 9 Yes Figure 8 A portion of the diagram is enlarged and shown schematically.

[0031] Figure 10 This is a flowchart of a method for manufacturing a powder container cap to prevent the pull tabs from warping, according to an embodiment of the present invention.

[0032] Figure 11 The main mold and insert mold are shown.

[0033] Figure 12 This shows the state in which the main mold and insert mold are installed on the mold support.

[0034] Figure 13 This is a flowchart of the steps involved in embossing the embossed area.

[0035] Figure 14 This shows the correspondence between the insert mold and a portion of the powder container lid. Detailed Implementation

[0036] This invention can be subjected to various modifications and has various embodiments. Specific embodiments will be illustrated below with reference to the accompanying drawings and described in detail in the accompanying description. References and Appendix Figure 1The effects and features of the present invention, as well as the methods for achieving these effects and features, will become clear from the detailed embodiments described below. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms. In the following embodiments, terms such as "1," "2," etc., are not limiting in meaning, but are used to distinguish one constituent element from another. Furthermore, singular expressions include plural expressions unless the context clearly indicates a different meaning. In addition, terms such as "comprising" or "having" mean that the features or constituent elements described in the specification are present, without pre-excluding the possibility of adding more than one other feature or constituent element. Furthermore, for ease of explanation, the dimensions of constituent elements in the drawings may be exaggerated or reduced. For example, the dimensions and thicknesses of the constituent elements shown in the drawings are arbitrarily shown for ease of explanation, and therefore the present invention is not necessarily limited to what is shown.

[0037] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. When describing the invention with reference to the drawings, the same or corresponding constituent elements will be given the same reference numerals, and repeated descriptions thereof will be omitted.

[0038] Figure 1 This is a perspective view of a powder container lid for preventing the powder from warping according to an embodiment of the present invention. Figure 2 The diagram shows the powder container lid with the pull tab open to prevent it from warping. Furthermore, Figure 3 and Figure 4 The diagram schematically illustrates the lid that forms part of the powder container lid to prevent the powder from warping. Figure 5 The diagram schematically illustrates the seal that forms part of the powder container lid to prevent the powder from warping. Furthermore, Figure 6 This is a bottom view of a powder container lid for preventing the pull tabs from warping according to an embodiment of the present invention.

[0039] Reference Figure 1 and Figure 2 The powder container lid 10, which prevents the pull tab from lifting, is difficult for substances to adhere to and is easy to clean, thus being hygienic. It is considered a material with high compatibility with food and is recyclable and environmentally friendly. As a safe packaging solution, it can be made of aluminum, but is not limited to this.

[0040] Since the quality of milk powder may deteriorate when it comes into contact with moisture and oxygen in the air, the powder container lid 10 completely seals the powder container to aid preservation, thereby maintaining the freshness and nutritional value of the infant formula. Furthermore, the powder container lid 10 prevents unauthorized access to the inside of the powder container and provides a non-slip surface. In addition, the powder container lid 10 is highly durable, protecting the milk powder container and shielding the product from physical damage during transportation and storage.

[0041] The powder container lid 10 may include a lid body 100 and a seal 200.

[0042] The powder container cap 10 can be attached to the powder container (not shown), exemplarily attached to the upper side of the powder container. Furthermore, a seal 200 is attached to the upper surface of the cap 100 and covers the opening 100h to seal it. A pull tab 210 extends from a point on the outer edge of the seal 200.

[0043] Reference Figure 3 and Figure 4 An opening 100h is formed on the inner side of the cover 100.

[0044] The opening 100h shown can be formed by cutting the central region of the cover 100 in a circular shape and then cutting a portion of that circular shape into a horizontal straight line. That is, the inner edge of the cover 100 has an arc-shaped inner edge and a straight inner edge. The arc-shaped inner edge can have a shape consistent with a virtual circle passing through the two endpoints of the straight line. Furthermore, the pull tab 210 is located on one side of the cover 100, and the straight inner edge is located on the other side of the cover 100.

[0045] More specifically, a virtual horizontal X-axis and a virtual vertical Y-axis are defined, passing through the virtual center point cp of the cover 100. Here, the Y-axis passes through the center point of the straight line. Furthermore, the opening 100h can be defined as the region enclosed by the inner edge of the cover 100, i.e., the boundary line BL. The intersection of the positive Y-axis of the vertical Y-axis and the boundary line BL is defined as point a; the intersection of the negative Y-axis of the vertical Y-axis and the boundary line BL is defined as point d; and the intersection of the negative X-axis of the horizontal X-axis and the boundary line BL is defined as point b. Here, point d is the center point of the straight line. In the region of the opening 100h, the distance from the center point cp of the cover 100 to point a can be equal to the distance from the virtual center point cp to point b. Furthermore, the distance from the boundary line BL from point a to point b can be equal to the distance from the center point cp to the center point cp. Furthermore, the virtual line segment from the center point cp of the cover 100 to point a and the virtual line segment from the center point cp to point b can form right angles with each other. Furthermore, using the distance from the center point cp of the cover 100 to point a or the distance from the center point cp to point b as the radius, and the line in the boundary line BL extending from point a to point b as the arc, a virtual fan-shaped region can be defined. This virtual fan-shaped region can then become the first region R1 constituting the opening 100h.

[0046] Furthermore, if a virtual inclined line dc is defined, having a negative angle starting from the negative X-axis and passing through the center point cp, then the inclined line dc intersects with the boundary line BL, forming a virtual point c. Point c is located at the lower left end of the cover 100 in the diagram. Furthermore, using the distance from the center point cp to point b or from the center point cp to point c as the radius, and the line in the boundary line BL extending from point b to point c as the arc, a virtual fan-shaped region can be defined. This fan-shaped virtual region can become the second region R2 constituting the opening 100h. Furthermore, a virtual triangle can be defined with the distance between the center point cp and point c as the hypotenuse, the distance from the center point cp to point d as the height, and the distance from point c to point d as the base. This triangular virtual region can become the third region R3 constituting the opening 100h. Additionally, the line near point c in the boundary line BL can be an arc-shaped line. Furthermore, using the Y-axis as a reference, a virtual fourth region R4 can be defined that is symmetrical to the first to third regions R1, R2, and R3. The opening 100h is composed of the first to fourth regions R1, R2, R3, and R4.

[0047] On the upper surface of the cover 100, a virtual attachment line AL is shown as a solid line. The attachment line AL surrounds the boundary line BL and can be a circular line. An attachment area AR is defined between the boundary line BL and the attachment line AL. Figure 1 As shown, when the seal 200 is attached to the cover 100, the lower edge region of the seal 200 is attached to the attachment region AR and can cover the opening 100h.

[0048] Reference Figure 2 , Figure 5 and Figure 6 The seal 200 may have a circular shape, but is not limited to this. The overall area of ​​the seal 200 may be similar to that of the seal. Figure 4 The areas enclosed by the attachment line AL are essentially the same.

[0049] The seal 200 is attached to the upper surface of the cover 100 and covers the opening 100h to seal it. An adhesive is applied to the upper surface of the cover 100 along the edge of the opening 100h, allowing the seal 200 to adhere to the upper surface of the cover 100. Alternatively, other adhesive materials can be used, or it can be attached by heat fusion. That is, the lower surface of the edge portion of the seal 200 can adhere to the area around the opening 100h in the cover 100. More specifically, the edge region of the lower surface of the seal 200 can adhere to the attachment area AR of the cover 100. Therefore, the overall area of ​​the seal 200 is larger than the overall area of ​​the opening 100h than the area of ​​the attachment area AR.

[0050] Furthermore, the seal 200 can be divided into a sealing body 200b and a pull tab 210. The pull tab 210 extends from a point on the outer edge of the sealing body 200b toward the central region of the sealing body 200b. Furthermore, the pull tab 210 is bent and folded toward the central region of the upper surface of the sealing body 200b, thereby overlapping with the sealing body 200b. In other words, the pull tab 210 can be integrally formed with the sealing body 200b. Furthermore, according to the embodiment, it can be made of aluminum sheet like the sealing body 200b, but is not limited to this. Furthermore, the two corners at the ends of the pull tab 210 can be rounded, but is not limited to this. Furthermore, a pull hole 210h can be formed in one area of ​​the pull tab 210.

[0051] A portion of the sealing body 200b has an embossed area 220. Embossing the sealing body 200b prevents wrinkling and unsightly deformation of at least a portion of the sealing body 200b due to shrinkage and expansion during the filling and circulation of milk powder in the powder container; in other words, it prevents deformation of at least a portion of the sealing body 200b. When the seal 200 is attached to the cover 100, the area of ​​the sealing body 200b facing the opening 100h of the cover 100 can be the embossed area 220. Therefore, the shape of the embossed area 220 matches that of the opening 100h.

[0052] The embossed area 220 contains a non-embossed area 220n. The embossed area 220 can also be defined as the area other than the non-embossed area 220n.

[0053] Figure 7 This is a view of the upper surface of the pull tab, which serves as a sealing element. Furthermore, Figure 8 schematically showing along Figure 1 The cross-section of the powder container lid obtained by C1-C2 wire cutting. Figure 9 Yes Figure 8 A portion of the diagram is enlarged and shown schematically.

[0054] Reference Figure 5 as well as Figures 7 to 9 Using the boundary line 210c between the pull tab 210 and the sealing body 200b as a reference, the pull tab 210 is bent to overlap with the sealing body 200b, while the surface of the pull tab 210 and the surface of the sealing body 200b are approximately on the same plane. In the pull tab 210, it can be divided into three regions x1, x2, and x3 in the vertical direction from the boundary line 210c.

[0055] Region 2 x2 is defined as the region located between region 1 x1 and region 3 x3.

[0056] In the direction perpendicular to the boundary line 210c, the third width of the third region x3 is smaller than the first width of the first region x1 in the direction perpendicular to the boundary line 210c; in the direction perpendicular to the boundary line 210c, the second width of the second region x2 is larger than the first and third widths of the first and third regions x1 and x3, respectively.

[0057] A portion of region x2 has a drawn hole 210h. The drawn hole 210h is located at the boundary between region x1 and region x2, and also at the boundary between region x2 and region x3. Therefore, in the direction perpendicular to the boundary line 210c, the second width of region x2 can be the same as the diameter of the drawn hole 210h.

[0058] The third region x3 can have an arc shape corresponding to the shape of the hole 210h, and the second region x2 and the third region x3 can have arc shapes corresponding to the shape of the hole 210h.

[0059] When the pull tab 210 is folded toward the sealing body 200b, the first and third regions x1 and x3 overlap with the sealing body 200b.

[0060] The first region x1 can be defined as the first part 201 of the pull sheet 210, the second region x2 can be defined as the second part 202, and the third region x3 can be defined as the third part 203. The first to third parts 201, 202, and 203 are formed as a single pull sheet 210.

[0061] When the pull tab 210 is folded toward the sealing body 200b, a portion of the third region x3 can face the unembossed region 220n. That is, a portion of the third part 203 can face the unembossed region 220n.

[0062] An adhesive 20 may be provided in the unembossed area 220n. The adhesive 20 may be a liquid adhesive (Glue). By providing the adhesive 20 in the unembossed area 220n, a portion of the third part 203 may be attached to the unembossed area 220n, thereby fixing the pull tab 210 to the sealing body 200b.

[0063] In various embodiments, the adhesive 20 may be double-sided tape. Exemplarily, the adhesive 20 may be made of thermally fused polyurethane (thermal melt polyurethane), which functions similarly to double-sided tape when heated.

[0064] Figure 10 This is a flowchart illustrating a method for manufacturing a powder container cap to prevent the powder from warping according to an embodiment of the present invention. Furthermore, Figure 11 Showing the main mold and insert mold, Figure 12This shows the main mold and insert mold mounted on the mold support. Figure 13 This is a flowchart of the embossing process for the embossed area. Furthermore, Figure 14 This shows the correspondence between the insert mold and a portion of the powder container lid.

[0065] Reference Figures 1 to 10 The method for manufacturing a powder container cap to prevent the pull tab from lifting (S100) may include: cutting a piece of material to prepare a cap body and a seal (S110); attaching the cap body and the seal (S120); setting an adhesive on the non-embossed area of ​​the sealing body (S130); embossing the embossed area (S140); bending the pull tab to attach it to the sealing body (S150); and checking the condition of the powder container cap (S160).

[0066] To manufacture powder container caps that prevent the caps from lifting, a powder container cap manufacturing system can be provided. The powder container cap manufacturing system may include a sheet cutting device, a product conveying device for transporting the powder container caps to various process units, a mold device, and an inspection device.

[0067] - Step of cutting the material into pieces to prepare the cover and seal (S110)

[0068] The original sheet material is cut to the predetermined specifications to prepare the cover 100 and the seal 200. The seal 200 can be prepared by molding the sealing body 200b and the pull tab 210 as a single piece.

[0069] - Step of attaching the cover to the seal (S120)

[0070] By attaching the sealing body 200b to the attachment area AR of the cover 100, the opening 100h of the cover 100 can be covered by the sealing body 200b.

[0071] - Step of placing the adhesive on the non-embossed area of ​​the sealing body (S130)

[0072] An adhesive 20, which is a liquid adhesive, is applied to the unembossed area 220n of the sealing body 200b.

[0073] In various embodiments, the unembossed area 220n of the sealing body 200b can be attached as an adhesive 20, which is a double-sided tape.

[0074] In the subsequent process, after the pull tab 210 is attached to the sealing body 200b and the adhesive 20 has cured, the height of the adhesive 20 can be determined by considering the height of the embossing formed in the subsequent process. The amount of adhesive 20 provided in the non-embossed area 220n can be determined in such a way that the surface of the sealing body 200b and the surface of the pull tab 210 are substantially coplanar when the pull tab 210 is attached to the sealing body 200b.

[0075] In various embodiments, when the adhesive 20, which is a double-sided tape, is attached to the unembossed area 220n, after the pull tab 210 is attached to the sealing body 200b, the height of the adhesive 20 can be determined by taking into account the height of the embossing formed in the later process.

[0076] - Step S140: Embossing treatment of the embossed area.

[0077] Further reference Figures 11 to 14 The step of embossing the embossed area 220 (S140) may include: preparing the main mold and the insert mold (S141); installing the main mold on the mold support (S142); inserting the insert mold into the insert insertion hole of the main mold (S143); and embossing the embossed area 220 of the sealing body 200b (S144).

[0078] 1) Steps for preparing the main mold and insert mold (S141)

[0079] Mold 300 includes main mold 310 and insert mold 400.

[0080] The main mold 310 may have a shape corresponding to the sealing body 200b. In addition, the main mold 310 is formed with an embossing treatment section 320. When the main mold 310 and the sealing member 200 are facing each other, the embossing treatment section 320 is formed in the area corresponding to the embossing treatment area 220 of the sealing body 200b.

[0081] A portion of the embossing section 320 has insert insertion holes 300h formed therein.

[0082] The insert mold 400 is composed of mold areas 410, 420 and 430 from the first to the third mold area.

[0083] The inner and outer sides of the first mold area 410 are composed of straight mold areas, forming a first embossing to prevent embossing defects. Furthermore, the inner side of the second mold area 420 is composed of arc-shaped mold areas, forming a second embossing to prevent embossing defects. The third mold area 430 is defined as a mold without embossing, and no embossing is formed there.

[0084] The third mold area 430 has a concave shape, so the first and second mold areas 410 and 420 and the third mold area 430 have a height difference from each other. The first and second mold areas 410 and 420 are at the same height, and the third mold area 430 is lower than the first and second mold areas 410 and 420.

[0085] Assume that the seal 200 is embossed using the mold 300 while the insert mold 400 is inserted into the insert insertion hole 300h.

[0086] Based on the premise that the pull tab 210 is bent and attached to the adhesive part 20, the positional relationship of the first to third mold areas 410, 420 and 430 is explained.

[0087] The first mold region 410 is defined as the position where the inner side of the first mold region 410 faces the end of the pull tab 210. The second mold region 420 is defined as the position corresponding to the pull hole 210h. The third mold region 430 corresponds to the region where the third portion 203 of the pull tab 210 is located, and the third mold region 430 corresponds to the unembossed region 220n.

[0088] In various embodiments, the first portion of the mold constituting the first mold region 410 and the second portion of the mold constituting the second mold region 420 can be integrally formed with the main mold 310. In various embodiments, the first to third portion molds constituting the first to third mold regions 410, 420, and 430 can be integrally formed with the main mold 310. In various embodiments, the first and second portion molds are integrally formed with the main mold 310, while the third portion mold can be omitted, so that the portion corresponding to the third portion mold can become a region without a mold.

[0089] 2) Step of installing the main mold onto the mold support (S142)

[0090] The main mold 310 can be mounted on the mold support 500. The surface of the main mold 310 has an engraved embossed section 320.

[0091] 3) Step of inserting the insert mold into the insert insertion hole of the main mold (S143)

[0092] Insert mold 400 is inserted into the insert insertion hole 300h of the main mold 310 mounted on the mold holder 500, thereby installing the insert mold 400 on the mold holder 500.

[0093] 4) Step of embossing the embossed area of ​​the sealing body (S144)

[0094] After the powder container cap 10 is positioned under the mold support 500, embossing can be formed on the embossing area 220 of the seal 200.

[0095] After positioning the powder container lid 10 with its upper surface facing the mold support 500, the mold 300 can be used to form a raised embossed pattern on the embossing area 220 on the upper surface of the powder container lid 10.

[0096] - Step S150: Bending the pull tab to attach it to the sealing body.

[0097] In the embossed powder container lid 10 in the embossed treatment area 220, the pull tab 210 is bent so that the lower side of the third part 203 of the pull tab 210 is attached to the adhesive 20.

[0098] - Step for checking the condition of the powder container lid (S160)

[0099] The quality of the powder container cap 10 after the adhesive 20 has cured can be inspected. For example, the quality status of the powder container cap 10 can be inspected by machine vision.

[0100] In the detailed description of this invention, although preferred embodiments have been described with reference to the invention, those skilled in the art or with general knowledge of the art will understand that various modifications and alterations can be made to the invention without departing from the spirit and technical scope of the invention as set forth in the following claims. Therefore, the technical scope of this invention should not be limited to the contents described in the detailed specification, but should be determined by the claims.

[0101] [Potential for Industrial Applications]

[0102] This invention relates to a technology for powder container lids, which has industrial applicability.

Claims

1. A powder container lid to prevent the powder from warping, characterized in that, include: A lid, which is attached to a powder container and has an opening; as well as A sealing element is attached to the upper surface of the cover and forms a sealing body that covers the opening to seal it. A pull tab extends from a point on the outer edge of the sealing body, and the pull tab is bent and folded toward the upper surface of the sealing body, thereby overlapping with the sealing body. In the sealing body, a portion of the embossed area corresponding to the position of the opening has an area with and without embossing. The non-embossed area is provided with adhesive. A portion of the pull tab is adhered to the adhesive and thus fixed to the seal.

2. The powder container lid for preventing the sheet from warping according to claim 1, characterized in that, The adhesive is a liquid adhesive or double-sided tape.

3. The powder container lid for preventing the sheet from warping according to claim 2, characterized in that, The pull tab is composed of three parts, which are integrally formed together. The first part is integrally connected to the sealing body, and the second part, located between the first part and the third part, has a pull hole formed therein. At least a portion of the lower side of the third part faces the unembossed area and is attached to the adhesive.

4. The powder container lid for preventing the sheet from warping according to claim 3, characterized in that, Embossing is formed in the embossing treatment area, excluding the non-embossed area.

5. A method for manufacturing a powder container cap to prevent peeling, used to manufacture the powder container cap for preventing peeling of the packaging sheet as described in claim 4, characterized in that, include: The step of cutting the material into pieces to prepare the cover and the seal; The step of attaching the cover to the seal; The step of applying the adhesive to the unembossed area; The step of using a mold to emboss the embossed area; as well as The step of bending the pull tab to attach the pull tab to the sealing body.

6. The method for manufacturing a powder container cap to prevent warping according to claim 5, characterized in that, The steps for embossing the embossed area include: Steps for preparing the master mold and insert molds; The step of installing the main mold onto the mold support; The steps of inserting the insert mold into the insert insertion hole of the main mold and installing it on the mold support; and The step of using the mold to emboss the embossed area.

7. The method for manufacturing a powder container cap to prevent warping according to claim 6, characterized in that, The insert mold is divided into mold areas 1 to 3. Embossing is formed in the mold areas 1 and 2, excluding the mold area 3 between the mold areas 1 and 2, to prevent embossing loss. The first mold area and the second mold area have a height difference with the third mold area.

8. The method for manufacturing a powder container cap to prevent warping according to claim 7, characterized in that, When embossing the embossed area, the third mold area faces the unembossed area.

Images