Nishida-style U-shaped bottom pouch
The U-shaped crimping of the bag bottom addresses the issue of residual powder or granules by ensuring complete discharge of contents, enhancing the usability of small medicine and food bags.
Patent Information
- Application Number
- JP2025000958U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2035-03-06
AI Technical Summary
Conventional bags with right-angled or rounded corners at the bottom leave residual powder or granules in the corners, making it difficult to completely empty the contents.
The bottom of the bag is crimped into a semicircular shape to facilitate complete discharge of contents by forming a U-shaped crimp, allowing easy removal of residual material.
The U-shaped crimping method ensures that all contents are dispensed without leaving residues in the bag corners.
Smart Images

Figure 0003253050000001_ABST
Abstract
Description
[Technical Field]
[0001] This device is a small bag for storing powdered or granulated medicine. [Background technology]
[0002] Conventional bags are rectangular bags with a right-angled bottom. Alternatively, there are other bags that have rounded corners at the bottom rather than right angles, allowing the bottom to expand. These are products with rounded gusseted bottoms intended for use upright in store displays. This bag, which has a different purpose from the small bag of this invention, is an improvement over the small bag that does not require a wide bottom. DISCLOSURE OF THE INVENTION [Problem to be solved by the invention]
[0003] The purpose of this invention is to make it possible to remove the contents from the bottom of a bag made of two overlapping sheets, such as medicine or food bags, without leaving any residue at the bottom.
[0004] Conventional bags are made by crimping two sheets together so that the bottom is at a right angle, but this can be solved by changing the crimping method so that the corners at the bottom of the bag are rounded and U-shaped.
[0005] This device simply presses the bottom of a bag of food or medicine into a U-shape, allowing any powder or granules of medicine or food remaining in the corners of the bag to be dispensed without remaining behind.
[0006] It is ideal for small medicine pouches and food. DETAILED DESCRIPTION OF THE INVENTION
[0007] This is a bag in which only the bottom of a conventionally used small bag for medicine etc. is crimped into a semicircular shape. [Brief explanation of the drawings]
[0008] [Figure 1]Figure 1 shows a traditional bag made by stacking two sheets of paper and placing powder or granules inside the bag and pressing it together. [Figure 2] Figure 2 shows a new pouch in which the bottom of the bag in Figure 1 has been crimped into a round shape. [Figure 3] FIG. 3 shows the top of the bag opened to allow powder or other ingredients to be added. [Explanation of symbols]
[0009] 1. The code 1 is the surface of the pouch. 2. The symbol 2 indicates the crimped part of the bag when all four sides are crimped. 3. The number 3 is the bottom of the small bag. 4. The number 4 is the rounded crimped part at the bottom of the bag. 5. The number 5 shows the bag opened at the top.
Claims
[Claim 1] A small pouch for medicine made by joining two sheets together and molding the bottom into a U-shape.