According to the relevant information provided by the US packaging agencies, beer corrugated carton packaging will still have good prospects for development in the next 10 years, and the potential market is very large. In order to enhance and protect the safety of beer and the appearance of the product, beer corrugated cartons must be equipped with the following elements to become quality products.
Protective function
Protecting the interior beer is the primary function of beer corrugated boxes. Therefore, according to the different weights and stacking heights of corrugated boxes, the beer production company establishes the physical strength indicators of corrugated boxes, including the edge pressure strength, burst strength, puncture strength, adhesive strength, and compressive strength of empty containers. . Beer corrugated cartons are required to meet these physical strength requirements and achieve their protective functions.
Sales function
The exquisite printing patterns play an important role in attracting consumers' eyeballs in the current highly competitive end market channels, and have a good promotion effect on product brand reputation and promotion. Nowadays, more consumers like to buy beer or gifts as whole boxes. The exquisite corrugated carton packaging becomes a silent salesman. Beer corrugated boxes are not only the transport packaging of products, but are now slowly penetrating sales packaging.
At present, the colorization of corrugated carton packaging has become the mainstream of beer corrugated boxes, which has improved the quality of beer. The existing corrugated carton packaging colorization into box process is divided into traditional offset printing, flexo printing, and preprinting. In the printing of beer corrugated boxes, the main printing method is offset printing, preprinting and flexo printing only account for about 10% to 20% respectively. However, as a kind of advanced printing technology, preprinting has started to attract the attention of beer production companies, and its application in the beer industry is gradually heating up.
Color beer corrugated cartons require uniform color to ensure the overall image. The color difference of printing is generally judged by the visual method and the instrument method: (1) Visual method: The same batch of products must not be judged by naked eyes, and there is no obvious color difference between batches of the same batch. (2) Instrument method: the same lot product △E ≤ 2.0, the same lot lot △E ≤ 2.5.
The corrugated cardboard box's humanized design enhances the display effect and gives the corrugated box an auxiliary function. For example, the corrugated cardboard box has a hand-to-mouth design on the roof of the corrugated cardboard box, which allows the beer to be picked up and opened when hand-tearing, and the beer cartons that have been torn by the hand-tearing mouth have better display functions. With the development of supermarkets, the increased window design or partially transparent design of beer corrugated boxes will be favored. Consumers will be able to see the interior beer at a glance.
Friction resistance
In order to ensure the appearance quality of the product, the friction resistance of the ink layer on the surface of the corrugated box is usually tested to evaluate the anti-wear performance of the printing ink on the corrugated box. Beer corrugated cartons required to withstand a certain strength, back and forth 100
More than two times the friction and corrugated box printing color will not be transferred.
The "dry friction test method" was used to examine the abrasion resistance of the ink layer on the surface of the corrugated box. The test method is usually tested with a friction tester. First, the white test paper is attached to the friction body, and the friction number required by the test standard is input to the control system. The machine is started and the test can be automatically controlled. The actuator adopts a high-precision gear reduction micro motor to drive the friction body to perform linear reciprocating frictional motion, and a buzzer prompts after the end of the test. The test result is to evaluate the abrasion resistance of the ink layer on the surface of the corrugated cardboard box based on whether or not there are obvious ink traces on the surface of the white test paper.
Whether the wear resistance of the ink layer on the surface of the corrugated box is good is mainly determined by the quality of the gloss of the ink and the surface of the box. The ink and varnish with good abrasion resistance and adhesion should be used in the production.
Non-slip performance
In order to prevent the beer box from slipping, causing the beer box to tilt, fall, collide, resulting in beer burst bottle, beer corrugated boxes must have a certain degree of anti-slip properties.
The anti-slip properties of beer corrugated boxes are evaluated using non-slip angles, which are also known as the coefficient of static friction between corrugated boxes. In order to take into account the production logistics and handling efficiency, the non-slip angle acceptable for corrugated cartons is 24°±3°, that is, the stacking of corrugated boxes is within 24°±3°, and there is no slippage between boxes and boxes.
The non-slip angle test method for beer corrugated cartons is to stack two identical corrugated cartons (with actual contents inside the box) on the non-slip instrument and shake it at a constant speed to increase the inclination angle of the corrugated box uniformly. Observe the inclination of the upper corrugated carton when it slides, that is, the non-slip angle of the beer corrugated carton.
Corrugated cartons to achieve the required non-slip angle, you need to use suitable non-slip surface paper materials and anti-skid inks and Varnish, and in the production of timely tracking and detection, found problems in time to adjust the materials used. According to experience, under normal circumstances, for the corrugated boxes that require surface varnish, only the ink supplier is required to control or adjust the non-slip properties of the varnish, which can ensure or change the non-slip properties of the surface of the corrugated box.
Waterproof performance
Beer will inevitably produce burst bottles during transportation. To avoid the proliferation of large areas of liquids and the collapse of corrugated boxes around them, beer corrugated boxes should have certain waterproof properties.
Beer corrugated cartons are required to have water-repellent properties on the surface and inside.
Within seconds, it can remain intact without penetrating the paper, or on the premise of maintaining the complete shape of the water droplets, the surface of the paper is dotted with water marks, and water droplets in the form of sheets are not allowed.
Corrugated paperboards with waterproof properties can be roughly divided into three types depending on their water resistance:
1. Hydrophobic corrugated cardboard
It means that when the water is affected by water for a short time, the surface of the processed corrugated cardboard will cause the water to condense into droplets and splash to prevent the penetration of water. The manufacturing process of hydrophobic corrugated cardboard is to add waterproofing agent for papermaking or surface sizing in the paper pulp in order to increase the water resistance of the base paper during the papermaking process, thereby imparting water resistance to the base paper. In the production of linerboards in paper mills, the papermaking water-repellent agent is applied to the surface of the calender of the papermaking machine and the paperboard is coated. In the manufacture of corrugated paperboards, papermaking water-repellent agents are applied to a corrugated board machine using a roll coater, or papermaking water repellents are sprayed onto a paperboard surface using a spray device.
2. Water resistant corrugated cardboard
Also known as water blocking corrugated paperboard, this paperboard is in contact with water for a long time and does not substantially pass water. Water-resistant corrugated board manufacturing process is that in the process of corrugated board bonding, a water-resistant waterproof coating is applied on the surface of paper by spraying or roller coating, so that the board has good water resistance.
3 strong water-resistance corrugated cardboard
This kind of paperboard is in contact with water for a long time and is almost impermeable to water. There are two methods for manufacturing strong-water-resistance corrugated paperboard: one is a one-time processing method, that is, water resistance is given to the base paper at the papermaking stage; and the other is a secondary processing method that uses a coating method and a dipping method on corrugated cardboard. The manufacturing stage gives it water resistance.
Beer waterproof corrugated box can be achieved in the use of materials and waterproof technology. In the use of materials, the waterproof performance of the base paper selection kraft liner board paper is significantly better than the noodle liner board, waterproof process selection of hydrophobic corrugated board can meet the beer corrugated box waterproof performance.
Anti-sticking performance
Boxed beer comes out of the freezer and encounters hot air. It forms small drops of water on the surface of the corrugated box. The ink on the surface of the corrugated box, especially varnish, is easily dissolved in the water to make it sticky. This makes it easier to stack corrugated boxes. Bonding and damaging the printing effect on the surface of the corrugated carton.
This requires special attention in printing and inks. The requirements for varnish are very high. It is difficult for ordinary varnish to achieve this effect.
Satisfy the production of automatic packing requirements
Beer corrugated cartons must be able to adapt to machine automatic packing. In this regard, the smoothness and strength of beer corrugated boxes are very strict. Otherwise, the packing lines cannot be used, and there will be card machine phenomenon.
For the flatness of the board, the national standard requires that there should be no warping greater than 20mm on a single piece of corrugated cardboard. In order to meet the requirements for automatic packing of beer production, the flatness of the paperboard is more stringent and requires
The meter length of corrugated board is warped within 8mm.
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