According to the relevant information provided by the US packaging agencies, beer corrugated carton packaging will still have good development prospects in the next 10 years, and the potential market is very large. In order to enhance and protect the safety of beer and the good appearance of the product, the beer corrugated carton must have the following elements to become a boutique.
The protective function protects the built-in beer as the primary function of the beer corrugated box. Therefore, the beer production enterprise formulates the physical strength index of the corrugated box according to the weight of the corrugated box and the height of the pallet, including the side pressure strength, the burst strength, the puncture strength, the adhesive strength, the compressive strength of the empty box, etc. of the corrugated box. . Beer corrugated boxes meet these physical strength requirements to achieve their protective functions.
The sales of exquisite printed patterns play a huge role in attracting consumers' attention in the current highly competitive terminal market channels, and have a good promotion effect on product brand reputation and promotion. Nowadays, more consumers like to buy beer or give gifts as a whole box. The exquisite corrugated carton packaging becomes a silent salesman. The beer corrugated carton is not only the transportation package of the product, but is now slowly infiltrating into the sales packaging.
At present, the colorization of corrugated carton packaging has become the mainstream of beer corrugated boxes, which has improved the grade of beer. The existing corrugated box packaging colorization box process is divided into three methods: traditional offset printing, flexo printing and pre-printing. In the printing of beer corrugated boxes, the main printing method is offset printing, and pre-printing and flexo printing only account for about 10% to 20% respectively. However, as an advanced printing process, pre-printing has begun to attract the attention of beer manufacturers, and the application in the beer industry has gradually warmed up.
Color printing beer corrugated boxes require uniform color to ensure the overall image. Printing color difference is generally judged by visual method and instrument method: (1) Visual method: the same batch of products is not allowed to have color difference, and there is no obvious color difference between batches of the same variety. (2) Instrument method: △E≤2.0 for the same batch of products, △E≤2.5 for the same variety.
The humanized design of the beer corrugated box structure enhances the display effect and gives the corrugated box an auxiliary function. For example, the design of the corrugated carton on the cap of the beer is increased by hand, and the hand tear is opened, which is convenient for the beer to be taken and placed. At the same time, the beer carton after the tearing of the hand tearing mouth has a better display function. With the development of supermarkets, beer corrugated boxes with increased window design or partial transparent design will be optimistic, consumers can see the beer inside.
Anti-friction performance In order to ensure the appearance quality of the product, the anti-friction performance of the surface ink layer of the corrugated box is usually tested to evaluate the anti-wear performance of the printing ink on the corrugated box. Beer corrugated boxes are required to withstand a certain amount of force, more than 100 times of friction, and the color of corrugated box printing will not be transferred.
The "dry friction test method" was used to test the abrasion resistance of the ink layer on the surface of the corrugated box. The test method is usually tested by a friction tester. First, the white test paper is attached to the friction body, and then the number of frictions required by the test standard is input into the control system to start the machine, and the test can realize automatic control. The actuator uses a high-precision gear reduction micromotor to drive the friction body for linear reciprocating friction movement, and a buzzer prompts after the test. The test results were based on the presence or absence of significant ink marks on the surface of the white test paper to evaluate the abrasion resistance of the ink layer on the surface of the corrugated box.
Whether the wear resistance of the ink layer on the surface of the corrugated box is good, mainly determined by the quality performance of the ink and the varnish on the box surface, and the ink and varnish with good wear resistance and adhesion should be selected during production.
The anti-slip performance prevents the beer box from slipping, causing the beer box to tilt, fall, and collide, causing the beer to burst, and the beer corrugated box must have a certain anti-slip performance.
The anti-slip performance of the beer corrugated box is evaluated by the anti-skid angle, which is also called the static friction coefficient between the corrugated boxes. In order to balance the production logistics and loading and unloading efficiency, the anti-slip angle of the beer corrugated box can be accepted as 24°±3°, that is, the corrugated box is stacked within a range of 24°±3°, and the sliding between the box and the box cannot occur.
The anti-slip angle test method for beer corrugated boxes is to stack two identical corrugated boxes (the actual contents must be contained in the box) on the anti-skid device, shake the hand at a constant speed, and increase the inclination angle of the corrugated box. Observe the angle of inclination when the upper corrugated box slides, that is, the anti-slip angle of the beer corrugated box.
Corrugated boxes should be equipped with suitable anti-slip paper materials and non-slip inks and varnish to achieve the specified anti-slip angle. The products should be tracked and tested in time for production, and the materials used should be adjusted in time. According to experience, in general, corrugated boxes that require varnish on the surface need only require the ink supplier to control or adjust the anti-slip performance of the varnish to ensure or change the anti-slip performance of the corrugated box surface.
Waterproof performance Beer will inevitably produce a bursting bottle during transportation. In order to avoid large-scale liquid diffusion, the surrounding corrugated box will collapse, and the beer corrugated box should have certain waterproof performance.
The beer corrugated box requires waterproof performance on both the surface and the inside. The water droplets are on the surface and the inner paper. The water droplets can remain intact within 8 seconds without penetrating the paper, or under the premise of maintaining the complete shape of the water droplets, the paper surface It has a punctate water mark and is not allowed to be in the form of flakes.
Corrugated cardboard with waterproof properties can be roughly divided into three types according to their water resistance:
1. Hydrophobic corrugated board means that when it is affected by water for a short time, the surface of the processed corrugated board causes water to condense into water droplets to prevent water from penetrating. The manufacturing process of the hydrophobic corrugated board is to add the paper water repellent or the surface sizing to the pulp in the papermaking process to improve the water repellency of the base paper, thereby imparting water resistance to the base paper. Generally, in the production of linerboard in a paper mill, a paper water repellent is applied to the surface of a calender of a paper machine to coat the paperboard. In the manufacture of corrugated cardboard, a paper-making water-repellent coating is applied by a roll coater on a corrugated board machine, or a paper-making water-repellent agent is sprayed on the surface of the paperboard by a spray device.
2. Water-resistant corrugated cardboard is also known as water-retaining corrugated cardboard, which is in contact with water for a long time and does not substantially pass water. The water-resistant corrugated board manufacturing process is to apply a water-resistant waterproof coating to the surface of the paper by a spray coating method or a roll coating method in the corrugated board bonding process, so that the paperboard has good water resistance.
3. Strong water-resistance corrugated cardboard This kind of cardboard is in contact with water for a long time and is almost impervious to water. There are two methods for manufacturing high-resistance corrugated cardboard: one is a one-time processing method, that is, the base paper is rendered water-resistant at the papermaking stage; and the other is a secondary processing method, that is, a coating method and a dipping method on corrugated cardboard. The manufacturing stage gives it water resistance.
The waterproof performance of the beer corrugated box can be realized in the materials and waterproofing process. In the materials used, the waterproof performance of the base paper is superior to that of the linerboard paperboard, and the waterproof corrugated cardboard can meet the waterproof performance of the beer corrugated box.
Anti-adhesive properties The beer that comes out of the cold room encounters hot air and forms small water droplets on the surface of the corrugated box. The ink on the surface of the corrugated box, especially the varnish, is easily dissolved in the water to cause stickiness, which makes it easy to pile up together. The corrugated boxes are bonded together to damage the printing surface of the corrugated box.
This requires special attention in printing and ink, and the requirements for varnish are very high, and ordinary varnish is difficult to achieve such an effect.
To meet the requirements of automatic packaging, the corrugated cardboard box must be able to adapt to the automatic boxing of the machine. In this respect, the flatness and strength of the beer corrugated box are very strict. Otherwise, the boxing line cannot be used, and the phenomenon of the card machine will occur.
For the flatness of cardboard, the national standard requirement is that there should be no warping of more than 20mm on a single corrugated board per 1 meter. In order to meet the requirements of automatic packaging for beer production, the flatness of the paperboard is required to be strict, and it is required to warp within 8 mm of corrugated cardboard per 1 meter length.
(Original title: There is still a need to develop a must-have function for beer corrugated boxes in the next decade)
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