118 patents in this list

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Barrier performance in protective packaging faces increasing demands across industries, with failure rates ranging from 0.1% to 2.3% depending on the application. Current inspection methods often miss micro-defects under 100 microns, while traditional barrier testing can damage the very packaging being evaluated. These challenges are particularly acute in food and medical packaging, where even minor compromises can lead to product deterioration or contamination.

The fundamental challenge lies in achieving reliable barrier inspection and monitoring without compromising the packaging integrity or slowing production lines.

This page brings together solutions from recent research—including fluorescence-based leak detection systems, transparent inspection members for enhanced imaging, sensor-integrated reusable packaging, and non-invasive oxygen measurement technologies. These and other approaches focus on maintaining package integrity while providing accurate, real-time barrier performance data.

1. Leakage Detection Device for Sealed Bags Using Fluorescence Detection on Contact Surfaces

MORINAGA MILK INDUSTRY CO LTD, アンリツ株式会社, 森永乳業株式会社, 2025

Packaging inspection device that can detect leakage of contents from sealed bags without applying voltage or using gas filling equipment. The device has a contact device that touches the bag and a fluorescence detection device that checks for leaked fluorescent material. When contents leak from a punctured bag, they attach to the contact surfaces. The fluorescence detector finds the leaked fluorescent material on the contact surfaces, indicating a leak. This prevents new holes by avoiding voltage and allows accurate leak detection regardless of bag or contents color.

2. Package Inspection System Utilizing Transparent Member for Enhanced Imaging of Sealed and Non-Sealed Areas

KANEKA CORP, 株式会社カネカ, 2024

Inspecting packages with high accuracy by placing a transparent member on the package and imaging the sealed and non-sealed areas sandwiched between the package and transparent member. This prevents focus issues when inspecting the seal versus the contents. The transparent member overlaps both areas.

3. Reusable Packaging with Integrated Impact and Light Sensors for LED Flat Lights

최재훈, CHOI JAE HOON, 2024

Reusable, returnable packaging for LED flat lights that enables tracking and monitoring of product condition during transport. The packaging has sensors inside to detect impacts and light levels. A smart label attached to the packaging records this data. By tracking changes in impact and light over the supply chain, issues like damage or opening of the lights can be identified and addressed. This improves delivery stability and prevents returns due to damaged products. The reusable packaging also protects the lights from vibration and shocks. It has an inner case with cushioning and a cover. An outer bag wraps the case for further protection. The lights are packaged without shaking. The smart labels can be scanned to retrieve usage history and number of reuses.

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4. Food Packaging Bag with Unique Seal Configuration and Handle for Controlled Opening and Vibration Reduction

株式会社大阪包装社, OSAKA PACKAGING CO LTD, 2024

A food packaging bag that prevents food damage during transportation by reducing vibration-caused shaking. The bag has a unique seal configuration that allows the bag to be peeled open in a way that prevents contents from moving around inside during transport. The bag has a handle formed by fusing one end of the front and back sheets together. The other end has side seals extending away from each other. This creates a central storage area sandwiched between the fused and separated sheets. The food item is placed in this central area. To open the bag, the fused handle end is peeled off first, then the side seals are peeled away. This allows the food to be removed without disturbing it inside the bag. This prevents vibrations from shaking the contents during transport.

5. Packaging System with Dual-Code Authentication and Deformation-Activated Concealment Mechanism

DENSANSHI CO LTD, 電算紙株式会社, 2024

Anti-counterfeiting packaging system that prevents unauthorized reading of product authentication codes during transportation. The packaging contains two codes: one visible only when deformed and one visible without deformation. This forces the end user to physically alter the packaging to reveal the hidden code. This prevents scanning the hidden code during transport without the user noticing. It also allows checking the visible code during purchase. A system with devices to capture and compare both codes determines product authenticity.

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6. Method for Generating Optically Machine-Readable Identifiers on Packaging Films Using Light-Induced Color Change and Dual-Layer Image Verification

ADAPA DIGITAL GESMBH, 2024

A method to create optically machine-readable identifiers on packaging films that cannot be easily copied or manipulated. The method involves generating an identifier by focusing a light beam onto a photosensitive layer on the film. This absorbs the light and causes a color change in the layer. The identifier can be read using a camera. A second layer is added that contains an optically detectable image. The user is asked to scan this image after scanning the identifier. The scanned images are compared and if they match, it indicates the packaging has not been tampered with.

7. Transparent PET Container with Center Support Protrusion and Deformation Prevention Ribs

류진우, YOO JIN WOO, 2024

Strawberry packaging container that prevents damage to the contents, allows easy checking without opening, maintains transparency, and is recyclable. The container has a body with a center support protrusion and deformation prevention ribs. The cover has inner grooves, support protrusions, and deformation prevention ribs. The container and cover are made of transparent PET. The design prevents contents shaking and damage by providing internal support and preventing deformation. The transparency allows checking without opening. The recyclable PET avoids environmental pollution and disposal costs.

8. Biodegradable Container with Reduced Water Activity for Prolonged Sauce Stabilization

CREACIONES AROMÁTICAS INDUSTRIALES SA, CREACIONES AROMATICAS IND S A, 2024

Biodegradable containers for packaging sauces that can stabilize the sauce for longer periods of time compared to regular biodegradable containers. The containers are made from a biodegradable material like gelatin, water, and glycerin. The sauce inside has reduced water activity to prevent it from hydrating and deteriorating the biodegradable container. This allows the container to remain stable over time and prevent leakage.

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9. Packaging Case with Internal Support and Grip Mechanism for Securing Writing Instruments

LINE PLUS CO LTD, 주식회사 라인플러스, 2024

Packaging case for writing instruments that prevents shaking, allows easy observation, and provides individual product protection. The case has a support member inside with features to grip and hold the writing instrument at the top and bottom. The top grip prevents sliding and the bottom grips securely hold the lower end. This prevents shaking during transport or storage. The case also has a transparent cover to view the instrument. The grip and support features prevent rattling and secure the writing instrument inside the case.

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10. Device with Multi-Dimensional Sensor Movement for Non-Invasive Oxygen Level Measurement in Sealed Packaging

WEBER FOOD TECHNOLOGY GMBH, WEBER FOOD TECH GMBH, 2024

A device for measuring the oxygen level inside food packaging without opening it. The device moves a sensor relative to the packaging and stationary base to measure the oxygen through the packaging without damaging it. This allows continuous in-line measurement of oxygen levels in sealed food packages to monitor spoilage prevention. The sensor can be moved in multiple dimensions using linear drives and a carriage. The sensor can also lower onto the top film of the packaging and suction it to create a dome for accurate measurement. The sensor can be coupled to a print head to mark bad packages. By measuring inside sealed packages without opening, the device enables fast, automated, and frequent oxygen testing of sealed food to optimize shelf life.

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11. Vacuum Chamber with Deformation Sensors for Non-Invasive Airtightness Testing of Fragile Packaged Products

MORGADE FRANCISCO MANUEL, 2024

Vacuum chamber for assessing the airtightness of packaged products like food items that cannot be tested by applying external pressure due to fragility concerns. The chamber uses sensors to detect deformation of the packaged product inside as vacuum is applied to assess seal integrity. This allows automated, high-speed testing of production lines compared to manual visual inspection. Sensors like cameras, distance sensors, and load cells measure product deformation as vacuum is applied to reveal leaks.

12. Cushioning and Packaging Material with Open-Celled Polymer Foam Core and Multi-Layer Construction

ブラザー工業株式会社, BROTHER INDUSTRIES LTD, 2024

Cushioning material and packaging material with improved cushioning performance. The cushioning material has a core made of a highly porous, open-celled polymer foam with an average pore size of 1-10 mm. The packaging material has multiple layers, including an inner layer made of a highly porous, open-celled polymer foam with an average pore size of 1-10 mm. This foam layer provides enhanced cushioning and protection compared to conventional materials. The outer layers can be any packaging material like corrugated cardboard or plastic sheeting. The inner foam layer with large pores allows better deformation and absorption of impact forces compared to conventional dense foams.

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13. Dual-Compartment Sunflower Seed Container with Detachable Connector and Sealed Seed Section

國立臺中科技大學, NATIONAL TAICHUNG UNIVERSITY OF SCIENCE AND TECHNOLOGY, 2024

Sunflower seed packaging container with separate compartments for sunflower seeds and discarded shells to prevent contamination and eliminate the need for extra containers. The container has a two-part main body that separates into a seed storage section and a shell storage section. The seed section has a sealed membrane to prevent air exposure. The shell section is open. The parts attach with a detachable connector. This allows users to easily pour out seeds without spilling shells back in. It also prevents recontamination of seeds from air exposure.

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14. Paper Packaging Box with Curved Transition Side Panels and Integrated Retaining Plate

ASAHI PRINTING CO LTD, 朝日印刷株式会社, デンカ株式会社, 2024

A simple and resource-efficient paper packaging box with impact protection for fragile items that requires no additional attachments like inserts or manuals. The box has a unique curved shape where the sides transition from one side panel to the opposite side panel as you move towards the lid. This creates a convexly curved interior that holds the contents between the lid and the curved surface. A retaining plate inside the box holds the contents in place against the curved interior. The curved shape provides impact protection and prevents items from shifting during transport. The box has a simple structure with no complex folds or attachments.

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15. Packaging Box with Recessed Cushioned Seats and Multi-layer Shock-absorbing Structure

TAE SAN SOLUTIONS CO LTD, 주식회사 태산솔루젼스, 2024

Shock-absorbing packaging box for fragile artifacts that reduces damage during transportation. The box has recessed cushioned seats matching the artifact shapes to hold the items. The seats are made of shock-absorbing materials like foam, rubber, or Styrofoam. The box also has outer walls with shock-absorbing layers and elastic members to disperse impacts. This prevents shocks from transmitting to the artifacts. The box components like walls and seats can be made of multiple layers with air buffering properties.

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16. Self-Service Package Processing System with Integrated Locker, Package Scanner, and AI-Powered Computed Tomography

NIRANJAN PRABHU YEOLE, NIRAV KAMLESH SHAH, BHARGAV MAKARAND MUNGEKAR, 2024

A self-service package processing system that combines the functionalities of a locker and package scanner to streamline the process of package submission, screening, storage, and retrieval while ensuring security and accuracy. The system features a user interface, automated puzzle allocation, a four-tiered verification and sorting system, and a dynamic storage unit with integrated IR sensors. It uses AI-powered computed tomography scanning to analyze package contents, self-wrapping with barcodes for identification, and IR sensors in lockers to monitor stored packages.

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17. Packaging Laminate with Layered Structure Including Acid-Modified Polyethylene and Low-Density Polyethylene

TOPPAN HOLDINGS CO LTD, TOPPANホールディングス株式会社, TOPPAN HOLDINGS INC, 2024

Highly resistant packaging laminate with improved content resistance, metal corrosion prevention, and cuttability. The laminate has a structure with layers in order: base, melt-extruded, metal, melt-coextruded, sealant. The melt-coextruded layer has an acid-modified polyethylene on the metal side and low-density polyethylene on the sealant side. This sandwich structure provides resistance to contents without corroding the metal and prevents delamination. The low-density polyethylene in the sealant layer improves cuttability compared to conventional adhesives. The acid-modified polyethylene has a specific maleic anhydride graft ratio and density range.

18. Cover Tape with Biaxially Oriented Polyamide Film and Balanced Tear Strength Ratio

SUMITOMO BAKELITE CO LTD, 住友ベークライト株式会社, SUMITOMO BAKELITE CO, 2024

Cover tape for packaging electronic components that is resistant to damage from piercing and bending. The cover tape has a tear strength ratio in the MD and TD directions of 0.95 to 1.05. This is achieved by using a custom-made polyamide film with controlled stretching ratios. The cover tape also has a tear strength of 600-1400 N/cm in both MD and TD directions. This provides balanced strength in all directions. The polyamide layer in the tape can be biaxially oriented film. The tape structure includes a base layer, polyamide layer, sealant layer, and optional intermediate layer. The tear strength balance helps prevent puncturing and tearing when pierced or bent.

19. Cosmetic Bottle and Cap Assembly with Inner Cover and Elastic Sealing Mechanism

박철, PARK CHUL, 2024

A cosmetic bottle and cap design that prevents evaporation of contents even when the cap is not fully closed. The design involves adding an inner cover that catches on a hook in the cap and prevents the contents from escaping when just the cap is placed on the bottle. This seals the bottle inlet and prevents evaporation. The inner cover can move freely up and down above the hook. An elastic body like a spring or sponge between the cap and inner cover further strengthens the sealing.

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20. Star-Shaped Packaging Box with Foldable Triangular Sections and Central Flat Base

주식회사 엘박스, ELBOX CO LTD, LBOX CO LTD, 2024

A unique star-shaped packaging box that improves product quality, display, and protection compared to conventional rectangular boxes. The star-shaped box is formed by folding and connecting triangular sections around a central flat base. This creates a star shape with eight protruding pillars when viewed from above. The star shape allows the box to be opened and closed like a traditional rectangular box, but with a more distinctive and visually appealing design. The star shape also provides better shock absorption and protection for the packaged product compared to a rectangular box. The folding mechanism involves folding triangular sections at right angles and connecting them with slots and guides. The star shape can be opened and closed like a traditional rectangular box, but with a more distinctive and visually appealing design. The star shape also provides better shock absorption and protection for the packaged product compared to a rectangular box.

21. Packaging Paper with Metal Salt Coating on Carboxymethylcellulose for Enhanced Tear and Puncture Resistance

22. Standing Pouch with Laminate Bottom Tape Comprising Unstretched Polyamide, Metal Foil, and Grafted Acid-Modified Polyolefin Adhesive

23. Layered Packaging Structure for Rice Balls with Moisture-Barrier Segmentation

24. Multi-Compartment Pouch with Dual-Layer Film for Segregated Storage

25. Blister Packaging for Contact Lenses with Relief Element-Enhanced Lid Stock

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