Tank-Free Hot Melt System (InvisiPac) for Packaging / Case & Carton Sealing
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Request a Spec Review →What LibertyCES's vendor documentation shows
Graco names case/carton sealing directly as the InvisiPac application. Quantified claims: melt-on-demand tank-free design on the FIFO principle (eliminates charring/thermal shock), Plug-Free applicators, 10-minute startup, adhesive usage reduction of 30% or more. Packaging is an additional real market found in the same source beyond the ten originally flagged sectors, included because InvisiPac is one of the named gap equipment categories. Manuals 3A4938EN-N, 333347EN, 3A2805EN-N, 334627EN-S.
Products cited in this application
Real Specifications
| HM10 melt rate | 10 lb/hr (4.5 kg/hr), 2 or 4 channels | graco-sealants-adhesives.md |
| HM25c melt rate | 25 lb/hr (11.3 kg/hr), 4-8 channels | graco-sealants-adhesives.md |
| HM50 melt rate | 50 lb/hr (22 kg/hr), 2-6 channels | graco-sealants-adhesives.md |
| Adhesive usage reduction | 30% or more reduction claimed | graco-sealants-adhesives.md |
| Startup time | 10-minute startup | graco-sealants-adhesives.md |
Tank-free, FIFO melt-on-demand design exists specifically to eliminate charring and thermal shock — the failure mode a tanked hot-melt system develops when adhesive sits at melt temperature through extended idle periods.
Charring and thermal shock are real failure modes of tanked hot-melt systems that hold adhesive at temperature during idle periods on a case-sealing line. InvisiPac's melt-on-demand, tank-free design is built specifically against that failure, and the 10-minute startup is what makes a shift-start or changeover practical without pre-heating a full tank.
Every claim on this page traces to real, vendor-published documentation on file with LibertyCES. Confirm current specifications with the manufacturer before final specification.
FAQ
Is Tank-Free Hot Melt System (InvisiPac) used in Packaging / Case & Carton Sealing?
Graco names case/carton sealing directly as the InvisiPac application. Quantified claims: melt-on-demand tank-free design on the FIFO principle (eliminates charring/thermal shock), Plug-Free applicators, 10-minute startup, adhesive usage reduction of 30% or more. Packaging is an additional real market found in the same source beyond the ten originally flagged sectors, included because InvisiPac is one of the named gap equipment categories. Manuals 3A4938EN-N, 333347EN, 3A2805EN-N, 334627EN-S. This is strong evidence.
What products are specified for Tank-Free Hot Melt System (InvisiPac) in Packaging / Case & Carton Sealing?
Documented examples include Graco InvisiPac HM10 (10 lb/hr / 4.5 kg/hr, 2 or 4 channels, 8 options), InvisiPac HM25c (25 lb/hr / 11.3 kg/hr, 4-8 channels, 8 options), InvisiPac HM50 (50 lb/hr / 22 kg/hr, 2-6 channels, 10 options), InvisiPac GS35 and GM100 Plug-Free applicators — confirm current specifications with the manufacturer before final selection.
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