Patent Publication Number: US-6986456-B2

Title: Packing box

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to an improved structure for a packing box used for packing different objects. 
   2. Description of the Related Art 
   Packing boxes are common for the quick moving and transportation of materials; they can be used for packing all manner of objects, such as house keeping items, furniture, books, foods, toys, and etc. However, the prior art packing box has many pieces, and requires manual assembly. This can lead to higher packing costs. 
   Therefore, it is desirable to provide a packing box to mitigate and/or obviate the aforementioned problems. 
   SUMMARY OF THE INVENTION 
   A main objective of the present invention is to provide a packing box that simplifies the packing process, reduces packing-related costs, and has a reduced number of pieces. 
   In order to Achieve the above-mentioned objective, the packing box of the present invention comprises a bottom containment box comprising a containment space and a bottom base, the bottom base comprising two first length-wise flaps and two first width-wise flaps; a loop clamped between the two first length-wise flaps and the two first width-wise flaps of the bottom base and leaving two lifting loops outside; and a cover box for covering above the bottom containment box, the cover box comprising a containment room and a top cover, the top cover comprising two second length-wise flaps and two second width-wise flaps, each second width-wise flap having two slots. 
   In the present invention, the two slots of each corresponding second width-wise flap are used for engaging with one of the two lifting loops, and the two slots of each corresponding second width-wise flap are formed by reversely folding the corresponding second width-wise flap along a folding line located in the middle of the corresponding second width-wise flap and then by carving the folding line with a knife. Actually, since one end of the width-wise flap is reversely folded, when the lifting loops are placed in the slots, the slots are strong enough to prevent lifting damage. The loop is made of flexible material selected from a group of PP, PE, nylon, cotton and any other common material. Furthermore, the two first length-wise flaps and the two second length-wise flaps are sealed with tape. 
   Other objects, advantages, and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIGS. 1A to 1C  show an assembly flowchart of a bottom case and loop according to the present invention; 
       FIG. 2  is a schematic drawing for an assembly procedure according to the present invention; 
       FIG. 3  is a schematic drawing for a further assembly procedure according to the present invention; and 
       FIG. 4  shows a completed assembly of the packing box according to the present invention. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
   A packing box of the present invention comprises a bottom containment box  10 , a loop  20  and a cover box  30 , as shown in  FIG. 2 . Please refer to  FIG. 1A to 1C . The bottom containment box  10  has a containment space  11  and a bottom base  12 . The bottom base  11  comprises two first length-wise flaps  121 ,  122  and two first width-wise flaps  123 ,  124 . The loop  20  leaves two lifting loops  21  outside,  22  at its two ends, and may be made from PP, PE, nylon or cotton. In this embodiment, the loop  20  is made from PP. When the bottom containment box  10  and the loop  20  are combined, the loop  20  is placed on the two first width-wise flaps  123 ,  124 , as shown in  FIG. 1A . Next, the two length-wise flaps  121 ,  122  cover the loop  20 , and then tape  125  is used to seal the two length-wise flaps  121 ,  122  to form the bottom base  122 . Meanwhile, the loop  20  is clamped between the length-wise flaps  121 ,  122  and the width-wise flaps  123 ,  124  of the bottom base, with the two lifting loops  21 ,  22  evenly extending from both sides of the containment space  11  of the bottom containment box  10 , as shown in  FIG. 1B . The bottom containment box  10  is turned up side down, so that the bottom base  12  faces down and the containment space  11  is exposed, as shown in FIG  1 C. Please refer to  FIG. 2 .  FIG. 2  is a schematic drawing for an assembly procedure according to the present invention. The cover box  30  comprises a containment room  31  and a top cover  32  (as shown in  FIG. 4 ). The top cover  32  comprises two second length-wise flaps  321 ,  322 , and two second width-wise flaps  323 ,  324 . Two slots  325 ,  326  on each second width-wise flap are formed by reversely folding one end of the width-wise flap, and then cutting the folded portion with a knife. 
   Before using the packing box of the present invention to pack an object  40 , packing material  50  can be placed in the containment space  11  of the bottom containment box  10  to avoid damage to the object  40 . Then, packing material  50  is placed on the object  40  and the cover box  30  is used to cover the object  40  and the bottom containment box  10 , as shown in  FIG. 3 . Finally, the two lifting loops  21 ,  22  are respectively hooked on the two slots  325 ,  326 , the two second width-wise flaps  323 ,  324  are folded toward the containment room  31 , and the two second length-wise flaps  321 ,  322  are taped with tape  327  to finish the entire packing process. If necessary, additional tape or loops can be added in a direction perpendicular to the direction of the tape  327  to increase integrity of the packing. 
   The present invention provides a simple packing box that has few pieces and a low cost. Furthermore, the present invention can also reduce human effort and cost due to its simple structure. 
   Although the present invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the invention as hereinafter claimed.