Transverse Seal Length Control for Pouched Product Packing
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Solution Overview
Problem
Existing methods for portion packing of pouched products for oral use face challenges such as limited speed, frequent production stops, waste, uneven weight distribution, and difficulty in handling a wide range of moisture contents, particularly low or high moisture levels, leading to inefficiencies and suboptimal product quality.
Innovation Solution
An apparatus comprising a first feeding unit for packaging material, a forming unit for tubular web formation, a second feeding unit for filling material, a sealing unit with transverse seals longer than the repetition distance, and a separation unit to produce pouched products with uniform filling and adaptable to various moisture contents, allowing for efficient production and reduced waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If prior art methods are used for portion packing, then production can be maintained, but speed is limited and production stops occur frequently
Solution Approach 1:
The sealing unit creates transverse seals that extend beyond the repetition distance, pre-sealing areas where future portions will be placed. This preliminary sealing action eliminates the need to stop production to create seals, allowing continuous high-speed operation while maintaining uniform filling distribution.
2Manufacturing precision
If prior art methods are used for portion packing, then filling can be completed, but weight distribution of filling material becomes uneven
Solution Approach 1:
By extending transverse seals beyond the repetition distance, the sealing unit pre-establishes seal boundaries before filling occurs. This ensures that filling material is contained within defined boundaries from the start, preventing gravity-induced settling and ensuring uniform weight distribution without requiring slower, more precise filling operations.
3Adaptability or versatility
If prior art apparatuses are used, then handling of filling material can be performed, but difficulty arises with wide range of moisture contents
Solution Approach 1:
The sealing unit is designed with universal capability to handle filling materials across a wide moisture content range (10-60%). The extended transverse seal design creates a contained environment that prevents dusting for dry materials while accommodating moist materials, making the apparatus versatile for different material properties without requiring separate handling systems.
Data Source
Figure 1~2
Figure 3a~3b
Figure 3c~3d
AI summary
The present invention relates to an apparatus (19) and a method for portion packing of pouched products for oral use. The present invention further relates to a pouched product for oral use (201). The apparatus comprises a first feeding unit (23) for supplying a web (25) of packaging material (7), a forming unit (31) for forming a tubular web (32) of the packaging material with a predeterminable cross-sectional shape, a second feeding unit (27) for supplying a filling material (29) into the tubular web, a sealing unit (35) for providing the tubular web with a series of transverse seals (40a, 40b) by repeated transverse sealing, the transverse seals having a length (I) corresponding to a collapsed cross-sectional shape of the tubular web, two subsequent transverse seals being interspaced by a repetition distance (d), and a separation unit (36) for separating the pouched products for oral use (43) from each other in or at the transverse seals, wherein the sealing unit is configured such that the length (I) of the transverse seal is greater than or equal to the repetition distance (d).