Insert-type packaging member with step-eliminating structure
The paper-based packaging member with a step-absorbing adhesive structure addresses content instability and safety hazards, enhancing stability and simplifying processing while reducing environmental impact.
Patent Information
- Application Number
- JP2025003434U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-10-06
- Publication Date
- 2026-02-16
- Estimated Expiration
- 2035-10-06
Smart Images

Figure 0003254735000001_ABST
Abstract
Description
[Technical Field]
[0001] This invention relates to packaging materials, and to a packaging member that improves the adhesive shape in an insert structure and eliminates inner surface steps. [Background technology]
[0002] The conventional insert-type structure had issues such as instability of the contents due to unevenness in the glue margin, deterioration of strength and poor appearance due to metal stitching, and environmental impact due to the mixture of different materials. Furthermore, additional auxiliary parts were required to smooth the inner surface, which made material management and processes complicated. Furthermore, the use of metal joining machines affected worker safety. Summary of the Invention
[0003] This device is a packaging material that improves the stability of the contents and improves work efficiency by extending the adhesive margin to absorb unevenness and smoothing the inner surface by bonding with glue. It is characterized by an adhesive structure made only of paper material without using metal stitching. [Problem to be solved by the invention]
[0004] It solves issues such as uneven inner surfaces due to gaps in the glue, the risk of tilting and damage to the contents, variations in assembly precision, deterioration of strength and poor appearance due to metal joining, the environmental burden caused by mixing different materials, an increase in processes due to the need for auxiliary parts, and health and safety risks. [Means for solving the problem]
[0005] The board uses a step-absorbing structure with extended adhesive margins, and is bonded using only paper material, eliminating the need for metal joints. This allows for both a smooth inner surface and improved structural strength. [Effects of the Invention]
[0006] This has the effect of improving the stability of the contents, standardizing processing precision, reducing the rate of damage during transportation, being environmentally friendly by standardizing materials, simplifying the process by eliminating the need for auxiliary parts, improving safety and hygiene, and improving the content retention by ensuring smoothness of the inner surface. [Brief explanation of the drawings]
[0007] [Figure 1] Exploded view of insert-type packaging material
[0008] [Figure 2] Enlarged view of the glued area
[0009] [Figure 3] Cross-section of the step absorption structure
[0010] [Figure 4] Perspective view of assembled state
[0011] [Figure 5] Structural comparison diagram (reference structure A and proposed structure B) [Prior art documents] [Non-patent literature]
[0012] Corrugated board structural specifications (JIS1507-05)
[0013] "Current Status and Issues of Level Joining Technology" published by the Packaging Materials Technology Association in 2022
Claims
[Claim 1] An insert-type packaging member with a step-eliminating structure. The adhesive margin is extended to absorb unevenness and the inner surface is smoothed to improve the stability of the contents. It is characterized by an adhesive structure made entirely of paper material without using metal stitching.