Fold, preparation method thereof, paper box and double-edge reverse-press cutting die
A carton and cardboard technology, used in papermaking, paper/cardboard containers, container manufacturing machinery, etc., can solve the problems of affecting processing quality, deformation of hanging holes, and increased cost of carton materials, and achieves high qualified rate of finished products and reduced cost. small force effect
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[0022] The present invention will be described in further detail below with reference to the accompanying drawings. reference image 3 , The first embodiment of the present invention is a crease, dedicated to the folding of cardboard after punching the head hole 101, including cardboard. The reverse side of the cardboard has an indentation 102, and the front of the cardboard has two knife marks 103 and two knife marks 103. The direction of the indentation 102 is the same, and the positions of the two knife marks 103 correspond to the two edges of the indentation 102 respectively. In this embodiment, the depth of the two knife marks 103 is half-cut, that is, 1 / 2 of the thickness of the cardboard.
[0023] The second embodiment of the present invention is a crease preparation method for preparing the creases described in the first embodiment of the present invention. The method includes the following steps: S1, providing a cardboard, providing an upper mold, and providing a bottom ...
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