Hygiene Product Sleeve Packaging via Envelope Fold Sealing
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Solution Overview
Problem
Existing methods for packaging compressible hygiene products in polyethylene bags are resource-intensive and generate waste, particularly due to the need for separate production and elaborate handling of bags, as well as energy consumption in sealing processes.
Innovation Solution
A method involving a continuous web of paper-based material for the sleeve, where lines of weakening are applied, allowing for envelope folds to seal the sleeve around the hygiene products, with optional adhesive or covering labels for closure, and the use of a tubular web to simplify production and reduce material width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyethylene bags are used for packaging hygiene products, then the products can be packaged and sealed, but a lot of energy is needed for the sealing method and waste arises when the seam is shortened
Solution Approach 1:
The patent changes the sealing method from thermal sealing (heat-based) to mechanical folding and adhesive bonding. The envelope fold creates a physical structure that requires minimal energy, and the adhesive provides the bonding function traditionally achieved through high-energy heat sealing. This parameter change from thermal to mechanical/chemical processes resolves the energy consumption issue while maintaining sealing reliability.
2Reliability
If polyethylene bags are used for packaging hygiene products, then the products can be packaged, but waste arises when the seam is shortened and production requires separate bag production and elaborate handling
Solution Approach 1:
The patent segments the packaging process into distinct functional elements: the continuous web provides the base material, the envelope fold creates the sealing structure, and the adhesive provides bonding. This segmentation eliminates the need for traditional seam shortening operations that generate waste, as the envelope fold naturally contains the products without requiring excess material to be cut and discarded.
Solution Approach 2:
The continuous web is prepared in advance with the envelope fold structure already formed, eliminating the need for separate bag production and subsequent handling. The folding flaps are pre-positioned to create the sealing structure, so no additional material needs to be added or removed during the packaging process, preventing waste from seam shortening.
3Reliability
If traditional bag production methods are used, then packaging can be achieved, but bags have to be produced in advance in a separate method and supplied to the packaging machine in elaborate manner
Solution Approach 1:
The patent merges the bag production and packaging functions into a single continuous process. The continuous web of material is fed directly into the packaging machine, where the envelope fold and adhesive application occur in-line. This eliminates the separate bag production step and the elaborate handling required to supply pre-made bags to the packaging machine, simplifying the overall device complexity while maintaining packaging functionality.
Solution Approach 2:
The patent implements a continuous web feeding system where material is constantly supplied and processed without interruption. The envelope fold and adhesive application occur continuously as the web moves through the machine, eliminating the batch processing and elaborate handling associated with pre-made bags. This continuous action simplifies the production process while ensuring reliable packaging functionality.
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
This approach reduces resource consumption, simplifies production, and minimizes waste by using a continuous web of material to form flexible sleeves that can be sealed efficiently, resulting in a more sustainable packaging solution.
Implementation Method 1
The folding flaps of the sleeve for the envelope fold are at least partially provided with adhesive and are folded to form an envelope, so that the two ends of the sleeve have each been sealed completely by the folding flaps of the envelope fold which have been connected to one another with adhesive
Data Source
AI summary
A method and apparatus for producing a cuboidal bundle pack, and the bundle pack produced thereby, for compressible hygiene products, wherein a group of hygiene products is inserted into a sleeve, open on two sides, consisting of packaging material, and the sleeve is then sealed for the purpose of forming a wrapping, preferentially closed on all sides, by unwinding a continuous web of material, preferentially paper-based, for the sleeve is unwound from a bobbin, applying lines of weakening to the unwound continuous web of material, separating a portion for a sleeve from the continuous web of material, the portion is righted and the preferentially compressed group of hygiene products is inserted into the righted portion via an open side of the sleeve, and sealing opposing sides of the sleeve by means of an envelope fold.