Talking about Several Bonding Methods and Characteristics of Non-nail Carton

The corrugated cartons frequently used in the market today are often present with stapled cartons. Due to the presence of staples in the stapled cartons, the internal products are scraped, the nail heads are contaminated with moisture and rust, and the nail heads are not easily connected to the staples. Factors such as breakage of the connection and the export packaging, the use of non-nail carton.
Commonly used staple-free cartons are often made by removing the heads of the cartons at the joints of the cartons, and instead use an adhesive to bond them, and there are also a small number of adhesive tapes for bonding. Another new type of staple-free carton on the market is the bonding of the carton joints with special process adhesives. The bonding mechanism and method of only three kinds of stapleless cartons are described below.
1. The bonding mechanism of Wang Mixer to bond the carton is to manually or automatically feed the carton board that has been grooved and pressed into the gluing mechanism. The gluing wheel is used to apply glue to the tongue, and the folding stick or guide is used. The role of the wheel is to make the board folded, folded and overlapped. The lap is placed under the action of the pressure roller and the glued tongue is pressed to enhance the adhesion. The adhesive used is mostly polyvinyl acetate. Emulsion.
Second, the adhesive tape bonding the carton interface is connected with adhesive tape, the process is attached to a tape machine attached to a tape feeding, cutting, pasting device, so that after the slotted pressure line cardboard interface according to docking Align and line up, and then tape the tape to make it into a carton finished product. The carton attached with tape can not be caught. The finished carton has no exposed iron wire. Its inner and outer surfaces are very smooth and will not accidentally damage the inner product. However, in order to ensure the strength of the bonding, adhesive tapes reinforced with vinylon fibers are generally used, the cost is higher than that of adhesives or wire nails, and the conversion of the tapes also requires down time and wasting time; if the carton Waterproof material with exterior coating cannot be overlapped by this method, and its use range is limited.
Third, the HL cartons HL staple-free cartons are distinctly different from the above-mentioned two staple-free cartons. The carton joints are processed using a planing process. The process is processed into a ladder-like, "" type structure, and rubberized wheels are glued. After bonding into a box, unlike the first two types of carton, the HL carton after the box is viewed from the outside, almost no overlap, due to overlapping lap paper overlapping, corrugated and corrugated, The overlap thickness and the thickness of corrugated cardboard are uniform.
Another difference between the HL cartons and the first two types of staple-free cartons is that the first two types of cartons need to be slotted, angled, and pressed. The HL carton board does not need to be slotted, cut corners, and the box body is seamless. It is a closed shell with no weak spots.
Bonding strength test:
I have done joint strength tests on the above three kinds of nailless cartons and nailed cartons. The test data are as follows:
Carton Size:
360×320×260mm (Length×Width×Height) five-layer paper specifications:
250×135×135×135×250 g/m2
Connection method:
(1) 2.35mm wide wire nails 6 pieces (2) Polyvinyl acetate emulsion (3) Strength comparison of kraft paper tape with strong fiber (10 times mean value)
Test conclusion:
From the above data analysis, we can see that the joint strength of the three kinds of staple-free cartons is much better than that of the staples, especially HL cartons. The joint strength is almost 4 times that of nails and 2 times that of nailless boxes. , And the elongation rate is the smallest of the four carton boxes, which ensures the overall structural size of the carton after the box is built, and enhances the stability of the carton. Good and bad reviews:
The three kinds of staple-free cartons have advantages compared with stapled cartons, because they have no nails, no scraping of the contents, and do not contain the contents of the nail head due to moisture and rust, which meets the requirements of the green packaging regulations for export products. As far as its cost is concerned, the cost of tape-free cartridges is high, and the recycling of cartons after disposal is also very complicated.
According to the three types of carton access methods, the HL carton is significantly better than the former two. The first two nailless carton joints are mostly one layer of paper sticky, and the outer view reveals the cut and corrugated corrugations. Good, that is, the peeling and foaming of the paper and the corrugated paper will make the strength of the joint greatly reduced; the weak strength of the carton will also be caused by the slotting and angle cutting processes, and the compressive strength and the ring compression strength will decrease. Unstable, prone to tearing from the joint after packing the cargo.
The HL cartons are different. The cardboard box has no concept of notching and corner cutting. The joint paper and the face paper, the corrugated paper and the corrugated paper layering are glued into a whole, and there is no weak point in the whole body of the cardboard box. Pressure and joint strength are all very difficult, the overall structural performance is good, fully enclosed, full paper, easy to recycle, dust-proof, moisture-proof, anti-pollution and anti-counterfeiting. It is recognized as a green packaging product. HL cartons have a lot of potential in the field of staple-free cartons and have great market potential.