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Case erecting and sealing

The powerful Jowat Toptherm® polyolefin hot melts impress with a high yield and clean processing, reducing maintenance costs and downtimes in packaging processes. Whether tray assembly, folding box sealing or wrap-arounds – the state of the art adhesive formulations with a low impact on resources keep processing costs low. The latest trends in the industry, such as shelf-ready packaging, provide significant benefits at the point of sale for retailers and consumers. Due to the attractive secondary packaging, the articles can be put directly onto the shelves. Special tray shapes with removal cut-outs provide a convenient and safe way of taking the article out of the secondary packaging. The 180° flaps on these cut-outs, however, represent a challenge for the bonding process due to the high restoring forces. To meet the requirements of this application, Jowat has developed special powerful adhesives with superior processing characteristics and high initial strength.
Jowat Toptherm® products provide the high heat resistance required for the sealing of cardboard boxes. This characteristic, however, is not only needed for hot filling. Adhesives with a high heat resistance are also essential for packaging that is exposed to high temperatures during transport. In addition, these adhesives are characterised by a good cut-off at the nozzle, excellent feed performance, and high process stability. For deep-freeze packaging, Jowat also provides special adhesives with a good flexibility at very low temperatures, excellent adhesion and high resistance to humidity and mechanical stress. This combination ensures a permanent bond.

Folding boxes

Another major concern in the packaging industry is the risk of harmful substances migrating from the packaging material into the food. Folding boxes for food packaging are manufactured more often from recycled paper, which requires an additional barrier to protect the goods against a potential migration of varnish or print ink components. The barrier function is provided by films, or by dispersion or extrusion coatings that are applied onto the interior side of the folding box. In general, sealing folding boxes used for primary packaging is a very demanding application, due to the difficulty to assess the surface properties of the material. Jowat adhesives developed for closing primary packaging made of recycled and virgin fibre paper provide excellent results on the most different barrier coatings. These adhesive are characterised by a good cohesion at unfavourable counter pressure, plus superior adhesion to surfaces with finishing, film lamination or varnish coatings. Meeting highest requirements, these adhesives also impress in applications with sensitive products due to the excellent resistance to essential oils, such as the bergamot oil in tea.

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based on EVA

Base Viscosity [mPas] /
Temperature [°C]
Setting time Application Characteristics Download
technical
data sheet (PDF)
Jowatherm® 252.70 EVA hot melt adhesive 1800 / 160 short - medium For bonding the outer packaging of deep-frozen goods, for temperatures as low as -40°C. Also for straw application, bonding PE/PP to carton packs. Good resistance to oxidation and colour stability in the melt. Good adhesion to coated surfaces. de en fr
Jowatherm® 257.20 EVA hot melt adhesive 1.050 / 140 short Hot melt adhesive for folding boxes, carton closing, wrap-around, trays on high-speed packers. Very good resistance to oxidation and colour stability in the melt. Short setting time. de en fr
Jowatherm® 258.50 EVA hot melt adhesive short For carton closing, wrap-around and trays on high-speed packers. Assembly bonding in the furniture industry. Good resistance to oxidation and colour stability in the melt. Short setting time. Minimal odour. de en fr

based on PO

Base Viscosity [mPas] /
Temperature [°C]
Setting time Application Characteristics Download
technical
data sheet (PDF)
Jowat-Toptherm® 256.00 PO hot melt adhesive 1460 ± 320 / 160 short For bonding purposes in the packaging industry, e.g. for closing folding boxes, wrap-around and tray erectors and deep-freeze packaging. Hot melt adhesive with short setting time, extremely colourfast and excellent oxidation resistance. Excellent adhesion to difficult surfaces, good flexibility at low temperatures, minimal odour. de en fr
Jowat-Toptherm® 256.10 PO hot melt adhesive 1100 / 160 very short Adhesive for bonding purposes in the packaging industry, for instance for closing folding boxes, wrap-around and tray erectors. Hot melt adhesive with short setting time, extremely colourfast and excellent oxidation resistance. Excellent adhesion to difficult surfaces, good flexibility at low temperatures, minimal odour. de en fr
Jowat-Toptherm® 256.65 PO hot melt adhesive 1500 / 160 very short For bonding purposes in the packaging industry, for instance for closing boxes, wrap-around and tray erectors. Hot melt adhesive with short setting time, extremely colourfast and excellent oxidation resistance. de en fr
Jowat-Toptherm® 256.70 PO hot melt adhesive 1215 / 160 very short Adhesive for bonding purposes in the packaging industry, for instance for closing folding boxes, wrap-around and tray erectors. Hot melt with short setting time, good oxidation resistance and colour stability.High heat resistance. de en fr
Jowat-Toptherm® 256.91 PO hot melt adhesive 1000 ± 200 / 140 very short For bonding purposes in the packaging industry, for instance for closing boxes, wrap-around and tray erectors. Good adhesion to difficult surfaces, minimal odour, very good mechanical processing characteristics. de en fr
Jowat-Toptherm® 850.00 PO hot melt adhesive 1250 ± 250 / 180 For bonding purposes in the packaging industry, e.g. erecting and closing cartons and folding boxes. Very high heat resistance of the bond, high flexibility of the bond at low temperatures, very good resistance to oxidation and colour stability in the melt (all compared to other Jowat products for this application). de en fr

The products listed only represent a limited selection of the available product portfolio. Product availability might differ by region. The technical data, characteristics and field of application provided in the table outline the differences between the individual adhesives of the product portfolio. Our Application Technology Department and our Sales Representatives are on hand to provide advice and support you finding the best adhesive for your particular application.

Note: The information on this page is based on test results from our laboratories as well as on experience gained in the field, and does in no way constitute any guarantee of properties. Due to the wide range of different applications, substrates, and processing methods beyond our control, no liability may be derived from these indications nor from the information provided by our free technical advisory service. Customer trials under everyday conditions, testing for suitability at normal processing conditions, and appropriate fit-for-purpose testing are absolutely necessary. For the specifications as well as further information, please refer to the latest technical data sheets.