Soft Packet Folding Structure for Easier Cigarette Access
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Solution Overview
Problem
Existing apparatuses for forming soft packets of smoking articles face challenges such as difficult access to the contents due to the presence of printed elements, inefficiency, and environmental impact from plastic covering casings.
Innovation Solution
An apparatus and method that form soft packets with an elongated shape, using a coupling unit to create assemblies wrapped by internal sheets, a folding and transfer unit to shape the sheets into a cup-like form, and a wrapping unit to complete the packaging with eco-friendly, recyclable materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a printed element (government stamp or duty stamp) is glued on the upper wall and larger walls of the containing body to keep closing flaps folded, then the closing flaps are secured and prevent exiting from the upper aperture, but the consumer must create an aperture by tearing off portions of the closing flaps to extract smoking articles, making access difficult
Solution Approach 1:
The upper wall is divided into a fixed portion (with the printed element) and a removable portion (closing flaps). The closing flaps are designed as separate segments that can be easily removed from the fixed upper wall structure, allowing consumers to access the interior without damaging the main packet structure.
Solution Approach 2:
The closing flaps are extracted as a separate removable component from the upper wall. The printed element remains on the fixed upper wall while the closing flaps can be taken out to create access, separating the sealing function from the access function.
2Reliability
If plastic material is used for the covering casing to hermetically isolate smoking articles and keep their characteristics unchanged, then protection and preservation are improved, but environmental impact increases due to non-recyclability
Solution Approach 1:
The material parameter of the covering casing is changed from plastic to paper. The paper material provides sufficient hermetic isolation when properly folded and sealed, while being environmentally friendly and recyclable, thus changing the material parameter to resolve the contradiction between protection and environmental impact.
Solution Approach 2:
The packet structure uses composite construction with an internal containing body and an external covering casing made of different materials (paper for containing body, optionally plastic film for covering). This composite approach allows the inner paper structure to provide hermetic isolation while the outer covering can be designed for environmental friendliness and recyclability.
3Ease of manufacture
If known apparatuses are used to form soft packets with closing flaps and printed elements, then the containing body structure is established, but the device complexity increases and productivity is reduced due to multiple folding and gluing operations
Solution Approach 1:
The closing flaps are pre-formed and pre-positioned on the upper wall during the initial packet formation process. The printed element is pre-applied to the upper wall before the closing flaps are attached, so that no additional folding or gluing operations are needed during final packet assembly, thereby increasing productivity.
Solution Approach 2:
The functions of securing the closing flaps and providing the upper wall structure are merged into a single integrated component. The printed element and closing flaps are combined in such a way that they form a unified structure that performs both sealing and structural functions simultaneously, reducing the number of separate operations needed.
Data Source
Figure 1~1A
Figure 2
Figure 2A
AI summary
Apparatus (10) for forming soft packets (100) of smoking articles (300) which have an elongated shape along a respective longitudinal axis (DL) with a respective lighting end (302) and a respective opposing mouth end (301). The apparatus comprises: a coupling unit (11) configured to form, along a first advance path (PA1), assemblies (210) comprising groups of smoking articles (300) partly wrapped by respective internal wrapping sheets (201); a wrapping unit (13, 15) configured to wrap the assemblies (210) with respective covering sheets (205); a folding and transfer unit (34, 12) configured to fold internal wrapping sheets (201) around the respective groups of smoking articles (300), so as to fold the internal wrapping sheets (201) according to a cup-like shape and to move the assemblies (210) along a second advance path (PT) toward the wrapping unit (13, 15).