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Home xin What kind of glue is used for sealing the carton of food outer packaging! Especially strong!

What kind of glue is used for sealing the carton of food outer packaging! Especially strong!

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Three conditions should be met: 1. It should be able to be frozen at minus 18 degrees. 2. One side of the carton is over molded, and the other side is not over molded. 3. It should be dried very fast

in recent years, carton packaging is gradually replacing traditional packaging such as plastic bags (boxes) and entering the field of frozen food packaging because of its novel and beautiful appearance, not easy to break, easy to carry and open, convenient printing and display, recyclable and beneficial to environmental protection

we know that when frozen food is stored in the freezer for a long time, water vapor will be generated in case of temperature change. If the adhesion is not firm, the carton is prone to cracking, which will affect the beauty of packaging and product quality. Therefore, the selection of appropriate adhesive in the carton packaging of frozen food is the key to avoid the cracking of carton in low temperature environment

the conditions that the adhesive should have are to effectively prevent the carton from cracking. The conditions that the adhesive should have are: good bonding performance at low temperature, soft, non brittle and non broken adhesive film, and certain water resistance; It can resist condensate produced by sudden change of temperature, and is safe and environment-friendly; The adhesive used for the outer packaging of food shall meet the hygienic requirements; The cost or cost performance of the product is within the range acceptable to customers

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at the same time, the selection of adhesive should also match the production equipment (such as the equipment used for bonding and coating method), factory environmental conditions (whether there is air conditioning system, whether workshop temperature and humidity affect the gluing operation) and packaging substrate. Because the length of fiber in the paperboard or the proportion of recycled pulp, the weight of surface printing ink, the type of coating varnish, whether to cover the film and the level of surface energy will affect the bonding effect, the adhesive used must match the bonded substrate

correct application of new adhesive at present, in order to obtain good gloss and beautiful appearance, UV varnish and BOPP coating are widely used in the outer packaging of high-end goods, and these two substrates are particularly difficult to bond, which is easy to lead to glue opening, especially at low temperature. Therefore, special water-based adhesive needs to be used. Recently, some newly developed water-based adhesives have strong adhesion to UV varnish, have wide adaptability to different kinds of UV varnish, and can be applied to the adhesion of BOPP coated cartons

hot melt adhesive is more suitable for online packaging and bonding of frozen food. Hot melt adhesive is widely used because it can be quickly cooled and solidified to form a continuous adhesive, which can meet the requirements of high-speed production line

however, because the operating temperature of the traditional sealing hot-melt adhesive is usually in the range of 150 ℃ ~ 180 ℃, it is not only prone to scalding accidents, but also prone to carbonization of the adhesive inside the hot-melt adhesive machine and blocking the nozzle after long-term use, which is not conducive to the maintenance of the equipment and affects the stability of packaging quality. Therefore, the hot melt adhesive with new ultra-low temperature operation can avoid the above problems and become a new choice

it is reported that the new ultra-low temperature operation hot melt adhesive is used for the bonding of frozen food cartons. The bonding performance can meet the requirements of storage environment from 30 ℃ to – 40 ℃, and the operating temperature can be as low as 90 ℃. Its advantages are: (1) reducing the operating temperature can greatly reduce the occurrence of rubber carbonization and blocking of filters, hoses and nozzles; (2) It can reduce the loss of hot melt adhesive system, reduce the maintenance cost and reduce the changes in the process; (3) Improve operation safety and avoid scalding; (4) Can reduce energy consumption; (5) Reduce the environmental pollution of food packaging workshop caused by flue gas and peculiar smell caused by glue heating.

new ultra low temperature operation hot melt adhesive

you can use water-based adhesive when sticking packaging sealing adhesive. I know that there is a suitable water-based sealing adhesive that can stick to the sealing, bottom and edge of various cartons. It not only works fast, but also is healthy and environmentally friendly, and does no harm to human body.

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