Method for making a self-opening carton with a pull-tab free opening and a self-opening carton with a pull-tab free opening

Abstract

The present application relates to the technical field of packaging box processing, and discloses a face paper with an avoiding adhesive tape, which comprises a face paper base body, a plurality of indentation lines are prefabricated on the face paper base body, the plurality of indentation lines divide the face paper base body into various faces corresponding to a rectangular body, including upper and lower bottom faces, a rear side face corresponding to the rectangular body is arranged between the two bottom faces, front side faces and left and right side faces corresponding to the rectangular body are arranged on the outer side edges of the two bottom faces, a glue layer is coated on the surface of the face paper base body, and a glue avoiding tape is arranged on the left and right side faces corresponding to the rectangular body and extends along the length direction of the outer side edges. The present application also discloses a manufacturing method for preparing an opening box without pulling out of the opening by using the face paper, which can solve the pulling out phenomenon of the opening box and reduce the defective rate of the opening box on the production line.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of packaging box processing, and particularly relates to a glue surface paper with an avoiding belt and a manufacturing method of an opening box without stringing when the box is opened. BACKGROUND

[0002] In the prior art, Figure 1 The manufacturing method of the opening box is generally divided into three steps. In the first step, a surrounding strip is manufactured with an inner mold as a support, and then a top cover and a bottom cover are assembled outside the surrounding strip of the inner mold to form an inner box 10. In the second step, an outer surface of the inner box 10 is covered with an outer paper 20 to manufacture an outer box. In the third step, three surfaces of the outer box are cut along the joint of the top cover and the bottom cover, and the inner mold is removed. Of course, in the full-automatic process from the raw material to the finished product, the opening box product with high quality can be obtained only under the joint control of hundreds of processes. For example, the paper surface needs to be pressed to make the paper surface more firmly adhered or more flat.

[0003] The inventor finds that stringing of glue may occur between the upper cover (corresponding to the “top cover” in the inner box form) and the lower cover (corresponding to the “bottom cover” in the inner box form). The product with stringing at the joint is not in conformity with the factory standard and is judged as a defective product. As shown in the figure, Figure 2 The reasons are as follows. First, the top cover 11 and the bottom cover 12 are assembled together, so that there is a gap 30 between the top cover and the bottom cover. The glue 21 on the glue surface paper attached to the gap may overflow into the gap 30 due to pressing. When the top cover is opened, the glue between the end surface 110 of the top cover and the end surface 120 of the bottom cover may be torn and stringing occurs. Second, even if the glue 21 does not overflow into the gap 30, when the cutting knife cuts the outer paper 20 during the opening process, if the local amount of glue 21 at the gap is too large, the paper layer may be cut off without cutting off the glue layer, and stringing may still occur when the top cover is opened. SUMMARY

[0004] Based on the above, the technical problem to be solved by the present application is to provide a glue surface paper with an avoiding belt. The opening box manufactured by using the glue surface paper can avoid the stringing phenomenon, and the defective products generated in the workshop can be reduced. Meanwhile, a manufacturing method of an opening box without stringing when the box is opened is provided to solve the stringing phenomenon caused by the defects of the existing process.

[0005] The present application is implemented as follows.

[0006] The glue surface paper with the avoiding belt comprises,

[0007] A face paper base body, a plurality of indentation lines are pre-prepared on the face paper base body, the plurality of indentation lines divide the face paper base body into various faces corresponding to a rectangular body, including upper and lower bottom faces, a rear side face corresponding to the rectangular body is arranged between the two bottom faces, and front and left and right side faces corresponding to the rectangular body are arranged on the outer side edges of the two bottom faces; and

[0008] A glue layer, the glue layer is coated on the surface of the face paper base body; and

[0009] A glue avoiding belt, the glue avoiding belt is arranged on the left and right side faces corresponding to the rectangular body and extends along the length direction of the outer side edges.

[0010] Further, the glue avoiding belt is also arranged on the front side face corresponding to the rectangular body and extends along the length direction of the front side face edge.

[0011] Further, the glue layer is obtained by transferring glue by a screen roller.

[0012] Further, the glue layer is obtained by printing glue by a silk screen.

[0013] Further, a recessed mesh area is arranged on the circumferential surface of the screen roller, and a smooth avoiding belt is arranged in the mesh area.

[0014] A manufacturing method of a pull-free opening box with a cover, comprising the face paper with the avoiding belt and an inner box, wherein the inner box comprises a top cover and a bottom cover; a gap is formed between the top cover and the bottom cover; and the manufacturing method comprises the following steps:

[0015] Positioning and bonding the lower bottom face of the inner box with the corresponding lower bottom face of the face paper;

[0016] Respectively bonding and forming the front, rear, left, right side faces and the upper bottom face of the inner box with the corresponding faces of the face paper to obtain an outer box;

[0017] Bubble pressing is performed on the outer box;

[0018] The face paper in the outer box is cut along the gap on the inner box.

[0019] Compared with the prior art, the face paper with the avoiding belt and the manufacturing method of the pull-free opening box with a cover have the following beneficial effects:

[0020] (I) The face paper with the avoiding belt is improved according to the natural defects of the opening box and is suitable for all box processes with the same structure and common manufacturing principle.

[0021] (II) When the cut is performed, the upper cover and the lower cover of the outer box are not pulled by glue.

[0022] (III) After the bubble is pressed, the glue diffuses slightly on the paper surface, is absorbed by the avoiding belt and does not overflow to the uncapping position.

[0023] (IV) On the whole-line automatic production line, only the device and process of the paper overgluing procedure need to be changed, other equipment and incoming materials do not need to be changed, and the popularization cost is low.

[0024] (V) The defective product rate on the production line of the workshop is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is the background technical drawing of the embodiment of the present application;

[0026] Figure 2 is Figure 1 is an enlarged view of the middle A part;

[0027] Figure 3 is a state diagram of the assembly of the rectangular body and the paper in the embodiment of the present application;

[0028] Figure 4 is a development state diagram of the overglued paper in the embodiment of the present application;

[0029] Figure 5 is a corner cutaway diagram of the inner box in the embodiment of the present application;

[0030] Figure 6 is a method flow diagram of the embodiment of the present application;

[0031] Figure 7 is an overglued paper diagram of the second embodiment of the present application;

[0032] Figure 8 is an overglued paper diagram of the third embodiment of the present application;

[0033] Figure 9 is an overglued paper diagram of the fourth embodiment of the present application;

[0034] In the drawings:

[0035]

[0036] DETAILED DESCRIPTION

[0037] The specific embodiments of the present application will be further described below in conjunction with the drawings. It should be noted that the description of these embodiments is used to help understand the present application and does not constitute a limitation on the present application. In addition, the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0038] Embodiment I:

[0039] As shown in Figure 1 The inner box 10 includes a top cover 11, a bottom cover 12 and an inner mold, the inner mold is encapsulated between the top cover and the bottom cover, the gap between the top cover and the bottom cover corresponds to the cutting path in the downstream process of the open box. The outer paper 20 is glued by a traditional gluing process to obtain a glued surface paper with an overall gluing effect. The outer paper is pasted and wrapped on the outer surface of the inner box to obtain an outer box.

[0040] As shown in Figure 2 The outer box will pass through a pressure maintaining process in the downstream process to extrude bubbles and flatten the paper surface by extruding the glued surface of the outer box. However, the glue 21 will diffuse during the extrusion process. When the glue 21 diffuses into the gap 30, the end surface 110 of the top cover and the end surface 120 of the bottom cover will be bonded, and the upper cover and the lower cover of the outer box will be opened, and the two will be pulled into a string.

[0041] After a new gluing scheme is implemented, a glued surface paper with an overall gluing effect is also obtained, but the glue 21 on the paper is distributed in a dot shape. When the cutting knife cuts the outer box along the cutting path, the glue point may not be cut in some local parts with glue points, and the pulling phenomenon still occurs.

[0042] As shown in Figure 3 and 4 The present application improves the gluing process to obtain a glued surface paper with a relief belt, which includes a paper base body, a plurality of indentation lines L are pre-prepared on the paper base body, and the indentation lines L divide the paper base body into various surfaces, and the various surfaces correspond to the six surfaces of a rectangular body after being folded.

[0043] Correspondence between the six surfaces of the rectangular body and the thirteen surfaces of the paper:

[0044] The front surface 40 includes a front inner layer 41 and a front outer layer 42, the front inner layer 41 is folded and adhered to the front surface of the inner box, and the front outer layer 42 is attached to the outer side of the front inner layer 41;

[0045] The left surface 50 includes a left inner layer 51, a left ear one 52, a left ear two 54 and a left outer layer 53, the left inner layer and the left ear are attached to the left surface of the inner box, and the left outer layer 53 is attached to the outer side;

[0046] The right surface 60 includes a right inner layer 61, a right ear one 62, a right ear two 64 and a right outer layer 63, the right inner layer and the right ear are attached to the right surface of the inner box, and the right outer layer 63 is attached to the outer side;

[0047] The back surface 70 is attached to the back surface of the inner box;

[0048] The upper bottom surface 80 is attached to the upper surface of the inner box;

[0049] The lower bottom surface 90 is attached to the lower surface of the inner box.

[0050] The face paper is glued to obtain a glue layer attached to the surface of the face paper substrate, and a glue avoiding belt 130 is formed on the left side face 50 and the right side face 60. The glue avoiding belt 130 is arranged at the middle position of the corresponding face, and corresponds to the gap 30 between the top and bottom cover end faces when the corresponding face is respectively folded and formed to be attached to the inner box.

[0051] As shown in Figure 5 The cutter 100 walks along the cutting path to cut the right outer layer 63, the left outer layer 53 and the front outer layer 42, and opens the upper cover to take out the inner mold. At this time, because the glue avoiding belt 130 is located on the surface of the left and right side faces, the outer box wrapped by the glued face paper is at least two faces without glue on the cutting path, so the glued face paper provided by the present application can effectively improve the yield of the box.

[0052] The present embodiment also provides a method for making an open box without pulling the cover, which improves the existing process and improves the production yield. The preparation work is to provide face paper and inner box materials:

[0053] S1, the face paper material 1a is loaded in a flat state;

[0054] S2, the face paper material 1a is transferred to pass through the glue roller or screen printing plate to obtain the glued face paper 1b with the avoiding belt effect;

[0055] S3, the inner box material 2a is provided to the glued face paper 1b, and the inner box and / or the face paper are positioned, so that the lower surface of the inner box material 2a is bonded to the lower bottom surface of the glued face paper 1b to form a first bonding body 3a;

[0056] S4, the face associated with the lower bottom surface of the glued face paper 1b is pre-folded and attached to the inner box to obtain a second bonding body 3b;

[0057] S5, the face associated with the upper bottom surface of the glued face paper 1b is folded to cover the inner box to obtain an outer box 4a, and the outer box 4a is treated by pressing and foaming;

[0058] S6, the edge of the outer box 4a is cut along the cutting path on the surface of the outer box 4a to obtain an open box 5a.

[0059] The glueing scheme in the present embodiment is to use a screen roller or screen printing plate to glue the face paper.

[0060] The screen roller is provided with a recessed mesh area on the peripheral surface, and the mesh area is provided with a smooth avoiding belt. The glue is applied to the screen roller, flows into the mesh, and is stored. The glue on the periphery of the mesh is scraped off by a glue scraping plate, including the glue on the smooth avoiding belt. After the face paper is printed on the screen roller, the glue in the mesh is transferred to the face paper, and the smooth avoiding belt without glue will form a glue avoiding belt on the face paper.

[0061] When the screen printing screen is glued, the pre-made mask is used to cover the corresponding part on the screen according to the shape of the avoiding tape on the surface paper, so as to form the glue avoiding tape on the surface paper.

[0062] The embodiment has low implementation difficulty and is the most industrial practical implementation manner.

[0063] Embodiment two:

[0064] The glued surface paper with avoiding tape can completely avoid the wire drawing phenomenon of the open box and avoid the waste of glue.

[0065] Compared with the glued surface paper in embodiment one, the glued surface paper in the embodiment is provided with glue avoiding tapes on the front inner layer 41 and the front outer layer 42.

[0066] Referring to the surface paper in the flattened state, the two glue avoiding tapes on the left and right sides are arranged along the extension direction of the two sides, and the two avoiding tapes on the front side are arranged along the length direction of the front side edge. The two kinds of avoiding tapes meet on the left ear two 54 and the right ear two 64.

[0067] After the inner box is covered with the glued surface paper to form the outer box, the avoiding tapes of the surface paper on the four sides of the front, back, left and right of the outer box correspond to the gaps of the inner box, and the cutting is performed along the cutting path, so that the glue is completely avoided, and the wire drawing phenomenon is completely eliminated. The avoiding area on the glued surface paper is the largest, so the amount of glue used is the least.

[0068] The embodiment can use the screen printing screen gluing method, and the glue can be printed on the surface of the surface paper by using the pre-made special screen printing screen. Other technical means are the same as those in embodiment one.

[0069] The embodiment has low material cost.

[0070] Embodiment three:

[0071] The glued surface paper with avoiding tape can completely avoid the wire drawing phenomenon of the open box.

[0072] Compared with the glued surface paper in embodiment one, the glued surface paper in the embodiment is provided with avoiding tapes on the front inner layer 41, the left inner layer 51, the left ear one 52, the left ear two 54, the right inner layer 61, the right ear one 62 and the right ear two 64. The surfaces are completely attached to the inner box and located on the inner layer after forming. After the inner box is covered with the glued surface paper to form the outer box, the avoiding tapes on the inner layer of the four sides of the front, back, left and right of the outer box correspond to the gaps of the inner box, and the cutting is performed along the cutting path, so that the glue is completely avoided, and the wire drawing phenomenon is completely eliminated.

[0073] The embodiment can adopt the method of screen printing glue, and the glue is printed on the surface of the face paper by using a prepared screen printing plate.

[0074] The embodiment is difficult to implement, and is an alternative scheme.

[0075] Embodiment four:

[0076] In the embodiment, the face paper is provided with a reserved area on the front inner layer 41, the left inner layer 51, the left ear one 52, the left outer layer 53, the left ear two 54, the right inner layer 61, the right ear one 62, the right outer layer 63, and the right ear two 64. After the inner box is covered by the outer box formed by the face paper, the reserved areas on the inner layers of the four sides of the outer box correspond to the gaps of the inner box, and the reserved areas are cut along the cutting path, so that the glue is completely avoided, and the phenomenon of silk drawing is completely eliminated. Moreover, the left and right outer layers are also free of glue, and the scheme is relatively economical. Other technical means are the same as those in Embodiment One.

[0077] The embodiment is also an alternative scheme.

[0078] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0079] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A method for manufacturing a pull-tabless open-top carton, comprising providing a face-glued paper having a relief strip and an inner carton, wherein the inner carton comprises a top cover and a bottom cover; a gap is formed between the top cover and the bottom cover; characterized in that, The over-glued face paper comprises: a face paper base body, on which a plurality of indentation lines are pre-prepared, the plurality of indentation lines divide the face paper base body into various faces corresponding to the inner box, including upper and lower bottom faces, a rear side face corresponding to the inner box is arranged between the two bottom faces, and outer side edges of the two bottom faces are provided with a front side face and left and right side faces corresponding to the inner box; and a glue layer, which is coated on a surface of the face paper base body; and a glue-avoiding belt, which is arranged on the left and right side faces corresponding to the inner box and extends along the length direction of the outer side edges; the glue-avoiding belt is also arranged on the front side face corresponding to the inner box and extends along the length direction of the front side face edge; and the method further comprises the following steps: positioning and bonding the lower bottom face of the inner box with the corresponding lower bottom face on the face paper; bonding the front, rear, left, right side faces and the upper bottom face of the inner box with the corresponding faces of the over-glued face paper respectively to form an outer box; performing bubble pressing on the outer box; cutting the over-glued face paper in the outer box along the gap on the inner box.

2. The method of claim 1, wherein: The glue layer is obtained by transferring glue with a screen roller.

3. The method of claim 1, wherein: The glue layer is obtained by printing glue with a silk screen.

4. The method of claim 2, wherein: A recessed mesh area is arranged on the circumferential surface of the screen roller, and a smooth avoiding belt is arranged in the mesh area. A recessed mesh area is arranged on the circumferential surface of the screen roller, and a smooth avoiding belt is arranged in the mesh area.

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