Problems and solutions in the color box gluing packaging process

In the process of gluing boxes, do you often encounter all kinds of problems? The following small editor for you to organize

Five rare problems and the causes!

Paste fastness is not high, carton deglossing

Degumming refers to the lack of adhesive fastness and fall.

The main causes of degumming are summarized as follows:

The viscosity of the color box packaging of the adhesive is not enough or the amount of glue applied is lacking;

Adhesive and carton material is not compliant;

If the sticky mouth part of the carton is laminated, varnished and other external treatment, it is difficult for the adhesive to penetrate into the paper through the surface layer, which is more difficult to glue the carton.

This kind of carton is more difficult to paste solidly;

After folding and gluing, the pressure size is lacking, and the pressurized time is not long enough, which is conducive to solid pasting.

The treatment method of not sticking firmly:

On the above problems caused by the adhesive paste box is not firm, should choose with the carton material to be pasted in line with the adhesive. The choice and use of adhesives is also very careful!

First of all, the choice of adhesive is also to detailed analysis of the situation in detail, based on different materials and conditions of the carton, adhesive selection can be referred to as follows:

1 not to do the appearance of the packaging box, sticky box when the choice of

Paper and paper bonding adhesive;

2 The surface of the box is coated with film, the choice of film and paper bonding adhesive;

3 The surface of the box is oiled with oil and paper adhesive;

4. If the products are sent to the cold climate area, we should use the low-temperature resistant adhesive. Strong adhesive; 5 products to be sent to the tropical region to choose a strong high temperature adhesive; 6 automatic gluing machine speed is high, pressing time is short, to choose the adhesive drying time is fast; 7 manual gluing box speed is slow, long pressing time can choose slow drying time of the adhesive; 8 paste straight box, pressing curing time can be shorter; 9 paste automatic bottom box, pressing curing time should be longer accordingly; 10 summer to choose a slower drying time of the adhesive; 11 winter selection of drying time faster adhesive. Secondly, the bonding force of the adhesive should be strong. Due to the molding part of the sudden pressure is not very large, and the consumption of 30-40 cartons per minute in the process of high-speed operation, the pressure stays for a long time. The adhesive with strong bonding force can stick the carton firmly even if it is pressed quietly. Finally, the ambient temperature of the operating workshop will have a certain effect on the adhesive. If the temperature in the workshop is too low, the adhesive will solidify immediately, affecting the solidity of the bond, even if the amount of adhesive applied again does not work. Of course, the less the amount of glue, the more sensitive to the room temperature, so in winter, the operation of the workshop temperature should be as far as possible to adhere to more than 20 ℃, conditions can be installed on the air conditioning to stop regulating. Operation of the workshop, but also to install a large and easy to see thermometer, in order to check at any time, control manufacturing environment. On the paste good products, should be dry at room temperature before leaving the factory, winter avoid not dry on the rush delivery. As for the carton which has been laminated and varnished, there are 4 ways to deal with the unstable gluing: ① die-cutting in the sticky mouth placed at the needle and thread knife, the sticky mouth of the surface layer broken, conducive to the penetration of adhesives; ② Use the grinding edge installation attached to the automatic gluing machine to grind the surface layer of the sticky mouth to facilitate the penetration of the adhesive; ③ Hot melt adhesive will be radiated to the sticky mouth localization, apply high temperature to condense the sticky mouth appearance of the material, and improve the solidity of the paste box; ④ When designing the box type before printing, the gluing part can be left in advance at the edge of the box piece to be laminated and varnished. Regarding the phenomenon that the gluing box is not firm due to the lack of pressure, it can increase the pressure of the gluing machine pressing section, prolong the pressing time, or change the adhesive with strong bonding force. Carton deformation There are 3 main reasons for the deformation of carton: ① some of the die-cutting version is handmade often due to the lack of precision incurred cartons do not diverge from the deformation of the gluing carton; ② adhesive concentration is low, the water content is large, resulting in moisture absorption cardboard deformation, carton molding is not flat; ③ Gluer itself is not well adjusted. This problem, just ensure the stability of the die-cutting quality, select the appropriate adhesive, adjust the box gluer can be dealt with. Tilted carton mouth There are three main reasons for the tilted carton gluing: ① creasing steel line of the pressure groove is too wide, not enough creasing pressure, so that the creasing line is not full, folding failed to fold accurately according to the creasing line; ② folding transmission is not properly adjusted, the left and right sides of the box piece of the bail speed does not diverge, the formation of sticky mouth tilt; ③ folding lever installation is not appropriate. Treatment: reduce the width of the indentation groove of the steel line, increase the pressure of the indentation; adjust the folding transmission, so that the left and right sides of the carton feeding speed divergence, reinstall the folding lever. Sticky mouth alignment is not allowed Sticky mouth alignment is not allowed to refer to the sticky mouth misalignment, misalignment of the carton can not be well molded. The phenomenon is usually caused by the adjustment of the machine precision is not allowed to speak further, mainly due to the operator of the box type and paste box machine does not know enough, affecting the degree of its operation. Therefore, to enhance the training of operators to improve their operating skills and their knowledge of complex box types, will effectively avoid the problem of inaccurate alignment of the sticky mouth. Gluing overflow Glue overflow refers to the excessive adhesive flowing out of the mouth. This phenomenon is mainly caused by the misalignment of the box and the excessive amount of adhesive by grinding the mouth and reduce the amount of glue can effectively reduce the occurrence of overflow.