Cup Packaging Blank with Controlled Adhesive Separation
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Solution Overview
Problem
Existing combination packaging containers require active separation of the sleeve-shaped outer part from the cup-shaped inner container for recycling, which is not user-friendly and can lead to errors in material separation during recycling.
Innovation Solution
A detachable adhesive layer is integrated into the blank for the outer part, allowing easy separation of the sleeve-shaped outer part from the cup-shaped inner container by applying a controlled separating force during recycling, utilizing a cellulose material with a specific tensile strength and adhesive peel strength to ensure separation only occurs during recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a detachable adhesive layer is used to enable easy separation of the outer part from the inner container, then the ease of operation for recycling is improved, but the reliability of maintaining the container integrity during transportation and use deteriorates
Solution Approach 1:
The adhesive layer's bonding strength is optimized to a specific parameter range that allows it to maintain container integrity during normal use and transportation while enabling easy separation during recycling. The adhesive is designed with controlled peel strength that exceeds the tensile strength of the cellulose material only under specific separation forces applied during recycling, not under normal handling conditions.
Solution Approach 2:
The outer part is constructed as a composite structure combining cellulose material with a specifically engineered detachable adhesive layer. This composite design creates a material system where the adhesive layer's properties are tailored to provide strong bonding during use but controlled detachment during recycling, resolving the contradiction between reliability and ease of operation.
2Productivity
If the adhesive layer is designed to allow separation under controlled force, then the productivity of the recycling process is improved, but the manufacturing precision required for the adhesive layer increases
Solution Approach 1:
The adhesive layer is designed with specific dimensional parameters and bonding characteristics that enable automated separation processes. The longitudinal extension and peel strength are carefully controlled to ensure the adhesive layer detaches at predetermined locations when subjected to separation forces, allowing for efficient automated recycling while maintaining manufacturability through standardized parameter specifications.
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
The solution enables easy and automated separation of the outer part from the inner container, even under deformation conditions, ensuring accurate and reliable recycling without undesired detachment during transportation or use, thus improving recyclability.
Implementation Method 1
an adhesive layer consisting of an adhesive is arranged on the first end portion and/or on the second end portion, wherein the blank can be wound to form a casing and the first end portion and the second end portion can be coupled to one another in an overlap region by means of the adhesive layer of the adhesive
Implementation Method 2
the cellulose material of the support layer has a tensile strength and wherein the adhesive of the adhesive layer has a peel strength, wherein the peel strength of the adhesive is greater than the tensile strength of the cellulose material of the support layer
Implementation Method 3
the adhesive of the adhesive layer has a peel strength, wherein the peel strength of the adhesive is greater than the tensile strength of the cellulose material of the support layer. This has the advantage that when the bonded outer part is separated during the recycling process, the cellulose material can be torn out at a certain separating force and the adhesive bond can thus be released
Data Source
AI summary
The invention relates to a blank (13) for an outer part (12) for encasing a cup-shaped inner container (2),wherein the blank (13) has a first end portion (14) and a second end portion (15), wherein an adhesive layer (22) consisting of an adhesive is arranged on the first end portion (14) and/or on the second end portion (15), wherein the blank (13) can be wound to form a casing and the first end portion (14) and the second end portion (15) can be coupled to one another in an overlap area (16) by means of the adhesive layer (22) of the adhesive.The adhesive layer (22) is dimensioned in such a way that the first end portion (14) and the second end portion (15) in the overlap area (16) on the adhesive layer (22) can be detached from each other again from the coupled state.