Exchange Module for Hot-Melt Sealing of Cardboard Packages
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Solution Overview
Problem
Existing adhesive tape sealing methods for cardboard packaging pose risks of injury, damage to products, and complicate recycling due to the use of plastic materials that require separate recycling streams.
Innovation Solution
An exchange module that integrates into existing devices to replace adhesive tape application units with hot melt adhesive application units, allowing for the folding and sealing of cardboard packaging using hot melt adhesive, which can be applied to both transverse and longitudinal flaps, and optionally forming a pallet securing mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If adhesive tape is used to seal cardboard packaging, then automated sealing is achieved, but injury risk and product damage risk increase due to required knife opening
Solution Approach 1:
The patent changes the sealing parameter from adhesive tape (requiring knife opening) to hot-melt adhesive (opened by pulling flaps). This parameter change eliminates the need for cutting tools while maintaining automated sealing capability, directly resolving the contradiction between automation and injury risk
Solution Approach 2:
The patent replaces durable adhesive tape with hot-melt adhesive that is applied fresh for each sealing operation. The adhesive is deposited directly onto the cardboard flaps and bonds them without requiring separate tape material, eliminating the need for knife opening while maintaining sealing effectiveness
2Extent of automation
If adhesive tape is used to seal cardboard packaging, then automated sealing is achieved, but recycling is complicated due to plastic material separation requirements
Solution Approach 1:
The patent changes the sealing material parameter from plastic-based adhesive tape to hot-melt adhesive that bonds directly to cardboard. This eliminates the plastic-cardboard composite structure, allowing the entire packaging to be recycled as cardboard without separation requirements while maintaining automated sealing
Solution Approach 2:
The patent creates a homogeneous sealing solution where the hot-melt adhesive becomes integrated with the cardboard material itself rather than forming a separate plastic layer. This homogeneity ensures the packaging can be recycled as a single material stream, resolving the recycling efficiency contradiction
3Loss of substance
If adhesive tape application device is replaced with hot-melt adhesive application unit, then plastic consumption is reduced, but device conversion cost increases
Solution Approach 1:
The patent segments the sealing device into a reusable base structure and a replaceable application unit. The hot-melt adhesive application unit can be detached and installed on existing sealing devices, allowing plastic reduction without requiring complete device replacement, thus controlling conversion costs
Solution Approach 2:
The patent designs the hot-melt adhesive application unit with universal mounting capabilities that can be adapted to various existing sealing device types. This multi-functionality allows a single application unit design to work across different device platforms, reducing overall conversion costs through standardization
4Strength
If hot-melt adhesive is applied to folded flaps, then secure sealing is achieved, but additional folding means are required
Solution Approach 1:
The patent merges the sealing function and folding function into a single integrated process. The hot-melt adhesive is applied to the flaps during or immediately after folding, and the adhesive bonding itself provides the sealing strength that would otherwise require separate securing mechanisms, thereby avoiding additional complex folding devices
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables cost-effective conversion to hot melt adhesive sealing, reducing plastic consumption, eliminating the need for tools to open packages, and simplifying recycling by integrating with existing devices, while providing secure sealing and pallet stabilization without additional plastic film.
Implementation Method 1
at least one application unit (11) for applying a hot melt adhesive to the folded transverse flaps (8)
Data Source
Figure 1~2
AI summary
The invention relates to an exchange module (5) for use in a device (1) for closing cardboard packaging (2), which comprises a conveying unit (3) for moving the cardboard packaging (2) in a conveying direction (F), guides (4) for guiding and aligning the cardboard packaging (2) and a closing unit for closing the cardboard packaging (2), wherein the closing unit comprises means for folding in transverse flaps (8) and longitudinal flaps (10) of a cardboard packaging (2) and an adhesive tape application device for applying an adhesive tape to a cardboard packaging (2) moving along the conveying unit (3).The invention is characterized in that the replacement module (5) is designed to replace the closure unit in the device (1), wherein the replacement module (5) comprises means (6, 7, 9) for folding in transverse flaps (8) and longitudinal flaps (10) of a cardboard packaging (2), at least one application unit (11) for applying hot melt adhesive to the folded transverse flaps (8), and at least one connection area (24) for connecting the replacement module (5) to the device (1). The invention further relates to a method for converting a device (1).