Manual Separation for Material Recovery
119 patents in this list
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Manual separation of packaging materials remains a crucial step in material recovery, with studies showing that improper separation can reduce recycling yields by 20-30%. Current designs often require tools or result in incomplete separation, leaving residual materials that contaminate recycling streams and decrease the quality of recovered materials.
The fundamental challenge lies in creating packaging designs that enable clean material separation while maintaining the structural integrity and protective functions during the product's use phase.
This page brings together solutions from recent research—including tearable PET structures with specific bond ratios, parallel and perpendicular weakening lines, overlapping sections with controlled adhesion, and integrated tear-off mechanisms. These and other approaches focus on achieving complete material separation while preserving package functionality throughout its primary use cycle.
1. Packaging Container with Sleeve Incorporating Parallel and Perpendicular Weakening Lines and Overlapping End Section Recesses
W U H FERNHOLZ GMBH & CO KG, 2024
A packaging container with a sleeve that can be easily and reliably opened and separated from the container without tools. The container has a sleeve made from a flat blank with overlapping end sections. It has at least one weakening line parallel to an end section to enable separation. An additional weakening line perpendicular to the first line further improves separation behavior when radial force is applied. Recesses in the overlapping area shorten the distances to be separated.
2. Sheet Packaging with Overlapping Wrapping and Central Adhesive Section for Tear-Free Sheet Access
DAIO PAPER CO LTD, 2024
Sheet packaging design that allows easy replacement of sheets without tearing the wrapping paper. The packaging has an overlapping region where the top and bottom ends of the wrapping paper overlap. This overlapping region has a central adhesive section and outer non-adhesive sections. The outer non-adhesive sections form openings for tearing the paper apart. This allows the user to easily remove the packaging without damaging the sheets inside. The central adhesive section prevents the ends from accidentally tearing apart during handling.
3. Paper Product Packaging with Rectangular Perforations and Specific Bond Ratios for Controlled Tearing
NIPPON PAPER CRECIA CO LTD, 2024
Paper product packaging that improves ease of opening perforations while preventing accidental tearing. The packaging uses a specific bond ratio for perforations in a rectangular shape on the packaging substrate covering the product. The bond ratio is 6-30% in the MD direction and 4-26% in the CD direction. This allows easy opening from a specific direction while preventing unintended tearing. The packaging substrate basis weight is 35-105 g/m2 for laminated tissue paper.
4. Detachable PET Bottle Cap Ring with Vertical Perforation Line for Manual Separation
LEESEUNGMIN, 2024
Easily detachable, tearable PET bottle cap ring with a perforation line that facilitates quick and easy lid ring separation. The ring has a circular shape for initial sealing of PET bottles. It has a vertical perforation line that has been dotted and softened so it can be easily separated with a fingernail or similar object. This allows safe and easy separation of the lid ring compared to cutting it.
5. Rectangular Packaging Box with Hand Hole Breakable Lines and Tray Conversion Feature
TOMOKU CO LTD, 2024
Packaging box design that allows easy breaking of specific sections to convert the box into a tray shape for display. The box has a rectangular body with a lid and breakable lines around the sides. The breakable lines form hand holes for opening the box. The key innovation is the hand hole breakable line has a width that matches average hand widths, so people can easily break the line to convert the box into a tray. The opening breakable lines are connected near the middle of the hand hole line, but are narrower and farther apart, making it unlikely to accidentally break them when breaking the hand hole. This prevents common errors like breaking the display support part instead.
6. Container with Rigid Frames and Flexible Deformable Middle Section for Manual Content Manipulation
DAI NIPPON PRINTING CO LTD, 2024
Packaging container that can be kneaded, crushed, or mixed by hand to manipulate the contents inside. The container has a rigid upper and lower frame with a flexible middle section in between. The flexible section deforms when squeezed but returns to shape when released, allowing hand kneading without deforming the frames. It also has easy tear lines to separate the container into upper and lower sections for emptying. The middle section is weaker than the frames to enable hand manipulation.
7. Packaging Box with Integrated Tear-Off Lid and Internal Cutting Mechanism
OJI HOLDINGS CO LTD, 2024
Packaging box with an efficient tear-off lid that can be easily opened without breaking the box. The box has a cutting mechanism built into the side walls. It has a hand hole with vertical score lines that form an opening when pushed in one direction. A horizontal score line connects the vertical lines. The cutting mechanism is a tape or flaps with score lines. The tape is attached to the inside of the hand hole. When pushed, the vertical score lines tear open the box. The tape can be removed after opening. This allows the box to be reused as a lid. The hand hole design eliminates the need to break the box or use perforations. It also reduces strength loss compared to separate hand holes and cuts. The tape attachment method improves efficiency versus pushing in a separate cut.
8. Multi-Layer PET Packaging Film with Hand-Tearable Structure and Heat-Sealable Innermost Layer
KITASHIKOKU GRAVURE PRINTING CO LTD, 2024
A packaging film for cosmetics and similar products that is easily cut by hand without scissors. The film is made of multiple layers of PET, with the innermost layer having heat sealability. This allows the film to be bonded together when heated during packaging. The hand tearability is achieved by using PET throughout the film, including the innermost sealant layer. The PET layers are bonded together using adhesive and pressure. The film provides good barrier properties for cosmetics packaging while allowing easy hand cutting after use for recycling.
9. Flexible Packaging Bag with Ribbed Upper Section and Transverse Cuts for Enhanced Resealability
Limited Liability Company GOTEK-Polypack Pereslavl, LIMITED LIABILITY COMPANY GOTEK-POLIPAK PERESLAVL, 2024
Flexible packaging bag design with improved sealing properties for repeat closure. The bag has a unique construction with ribs at the top that straighten the upper part and provide rigidity. The ribs prevent easy tearing when attempting to open the bag in the zipper area. To enable manual opening, transverse cuts are made on the ribs in the path of the zipper laser notch line. These dissection cuts weaken the ribs and allow the user to pull the tear through them when separating the top section containing the zipper. This allows the bag to be reclosed multiple times without degrading the seal integrity.
10. Packaging Bag with Perforated Easy-Open Lines for Controlled Simultaneous Tearing
TOYO SEIKAN CO LTD, 2024
Packaging bag with an easy-open feature that allows simple tearing to open the bag without complicated peeling or unzipping. The bag has perforated lines called "easy-open lines" that guide the tear through the bag material. The lines are placed in a way that ensures the front and back film edges of the opened bag will separate and shift, creating a gap that makes it easy to pick and open the bag. This prevents overlapping edges that can make it harder to initially open the bag. The lines are formed in the front and back films to facilitate tearing through both layers simultaneously. The lines are preferably in the nylon layer of the bag to ensure the tear follows the desired direction.
11. Method for Thermoforming Multi-Layer Plastic Sheet into Easily Openable Pharmaceutical Administration Packaging
BOEHRINGER INGELHEIM VETMEDICA GMBH, 2024
A method for producing and filling an administration packaging for a pharmaceutical product, like a pipette, that allows easy opening and dispensing of the contents. The method involves thermoforming the packaging from a multi-layer plastic sheet. A key feature is heating and forming the sheet to shape without creating a separate breaking zone. This eliminates the need for additional steps like perforating or scoring to create a weakened area. The packaging can be made on a thermoforming machine with a heating section and mold. The sheet is partially heated and formed into the packaging shape. The result is a packaging that can be easily opened by squeezing or pinching a section of the plastic between thumb and forefinger to initiate tearing. This simplifies dispensing compared to conventional pipettes that require cutting or peeling a seal.
12. Packaging Bag with Dual Vertical Sections and Differential Strength Breakable Areas for Sequential Access
DAIO PAPER CO LTD, 2024
A packaging bag for absorbent articles like diapers that has multiple easy-to-break sections to facilitate opening when starting use. The bag has two vertical sections, one above the other, containing rows of absorbent articles. The bag has a breakable section in each vertical section, with the upper section's section weaker than the lower section's section. This allows users to tear the bag at the upper section to access the upper row of articles, without accidentally breaking the lower section as well. The weaker upper section makes it easier to initiate tearing there.
13. Packaging Container with Dual-Compartment Weak Seal and Offset Grip Section
TOPPAN HOLDINGS INC, 2024
A packaging container with improved peelability of the weak seal between two compartments. The container has an inner compartment separated from a weak seal by a first compartment. A grip section is connected to the film of the first compartment and positioned apart from the weak seal. Pulling the grip sections in opposite directions easily peels off the weak seal. This allows easy access to both compartments without affecting the seal strength.
14. Cylindrical Packaging Box with Breakage Initiation Section and Corner Bending Guides
OJI HOLDINGS CO LTD, 2024
Packaging box design that makes it easy to open and break apart. The box has a cylindrical body, top plate, and bottom plate. The front side of the body has an opening section with a breakage initiation section. The top plate has a front flap and corner bending guides. When opening, pull the unsealed section starting at the breakage initiation. Then, grasp the top plate corners and bend them using the guides. This smooth progression from the edges to the corners makes the box easy to break and open.
15. Battery Pack Enclosure with Tearable Film and Integrated Pull Tab
HUAWEI TECHNOLOGIES CO LTD, 2024
Simplified battery pack removal in mobile devices like phones and laptops using a tearable packaging film. The film covers the battery pack and has a tear line separating a wrapping portion from a pulling portion. To remove the battery, just pull the tab across the tear line to separate the pulling portion from the wrapping. This allows easy battery access for repair or replacement without tools or damaging the pack.
16. Ring-Shaped Piercing Device with Integrated Sharp Tip for Medical Packaging
CECCORULLI JESSIE, 2024
Portable, reusable piercing device to assist in opening difficult medical packaging like blister packs and pill bottles, especially for elderly or physically impaired people who have trouble opening them. The device is a ring-shaped tool with a sharp piercing tip that can be applied to the seal to create a perforation for opening. The ring provides stability to help apply enough force to pierce the seal. The piercing device aims to provide a sanitary and safer alternative to using random sharp objects like scissors to open medical packaging.
17. Multilayer Packaging Bag with Laser-Irradiated Biaxially Oriented PET for Manual Tearing
TOYO SEIKAN GROUP HOLDINGS CO LTD, 2024
Easy-to-open packaging bags made from multilayer films that can be torn open by hand without tools like scissors. The bags have an outermost layer made of biaxially oriented PET film, an intermediate layer with cuts, and an innermost heat-sealable layer. The PET outer layer has amorphous or low-crystalline regions created by laser irradiation. These regions match the cut locations to allow integrated tearing of the whole film when opening the bag.
18. Recyclable Packaging Tube with Manually Separable Outer Body and Inner Component
PACKSYS GLOBAL AG, 2024
Recyclable packaging tube that enables easy separation of the tube body from the inner packaging component after use. The tube has a recyclable outer body made of a single material, and the inner packaging component is adapted to the material being stored. The body and inner component are connected reversibly during use, but can be manually separated for recycling after disposal. This allows recycling of the body separately from the inner component, improving overall recyclability compared to tubes with inseparable materials.
19. Sheet Packaging and Stack with Fold-Aligned Separation Guide and Overlapping Exterior Opening
UNICHARM CORP, 2024
Sheet packaging, sheet stack, and exterior body design to make it easier to remove individual sheets from a stack. The sheet stack has a fold direction and the packaging has an opening. The exterior body has an overlapping opening. The fold direction is the base point. The separation guide on the exterior opening contacts the sheet center to easily split sheets. This separates sheets as they exit the stack instead of pulling out multiple sheets at once.
20. Cylindrical Packaging Box with Center-Push Folding Structure and Tearable Pocket Mechanism
RENGO CO LTD, 2023
Packaging box with an opening mechanism that allows easy and consistent opening. The box has a unique folding structure that enables the user to easily tear open the box by pushing in the center section. The box is cylindrical with ridges connecting the side walls. Convex protrusions on one sidewall connect the ridges. Cutting lines divide the sidewalls. Fold lines allow the sidewall to reverse when pushed in. This forms a pocket that can be torn open by the user. The pocket then unfolds and divides along the cutting lines.
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