Patent Publication Number: US-2003226639-A1

Title: Container manufacturing method

Description:
BACKGROUND OF THE INVENTION  
       [0001] The present invention is related to a container manufacturing method in which the barrel body of the container is made by blowing molding, while the outer housing is made by suction molding. The outer housing is adhered on the barrel body to achieve a container with solid appearance and colorful figures and stripes.  
       [0002]FIG. 6 shows a conventional container made of plastic material (such as PET). The container is formed as a barrel having an interior receiving space and an opening. A liquid or solid can be contained in the receiving space. The container is mostly manufactured by way of blowing molding. A blank with an opening is blown by a blowing molding machine into a necessary shape. The barrel body of such conventional container has simple stripes without apparent acute angle. Therefore, the appearance of the container is monotonous.  
       [0003] Furthermore, the container made by the conventional blowing molding method has monotonous color. An outer film printed with relevant figure or trademark or company name is attached to the container to beautify the appearance of the container or highlight the trademark of the product. The outer film is attached to the container by means of contraction or adhesion and is easy to detach from the container due to external force. As a result, the indication for the container will be unclear. In addition, the outer film lacks solid visual effect and can only achieve an indication or plane visual effect. Therefore, the appearance of the container can be hardly beautified.  
       SUMMARY OF THE INVENTION  
       [0004] It is therefore a primary object of the present invention to provide a container manufacturing method in which the barrel body of the container is made by blowing molding. The outer housing is made by suction molding. The outer housing is adhered on the barrel body to achieve a container with solid appearance and apparent acute angles.  
       [0005] It is a further object of the present invention to provide the above container manufacturing method in which prior to suction molding, the material of the outer housing is previously color printed with a figure or color. After molded, the outer housing has a desired figure and color so as to beautify the appearance of the container and achieve better visual effect.  
       [0006] The present invention can be best understood through the following description and accompanying drawings wherein: 
     
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
     [0007]FIG. 1 is a flow chart of the container manufacturing method of the present invention;  
     [0008]FIG. 2 shows the procedure of forming barrel body of the present invention;  
     [0009]FIG. 3 shows the procedure of forming outer housing of the present invention;  
     [0010]FIG. 4 shows the procedure of adhering the outer housing onto the barrel body of the present invention;  
     [0011]FIG. 5 shows a special appearance of the container manufactured by the present invention; and  
     [0012]FIG. 6 shows the appearance of a container manufactured by a conventional container manufacturing method. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
     [0013] Please refer to FIG. 1. The container manufacturing method of the present invention includes procedures of forming barrel body  1 , forming outer housing  2  and assembling  3 .  
     [0014] Referring to FIG. 2, the procedure of forming barrel body  1  includes the following steps:  
     [0015] First step of manufacturing a blank  11 : A blank  111  with an opening  112  is made of a PET material. The outer side of the opening  112  is formed with an outer thread  113 .  
     [0016] Second step of blowing molding  12 : The blank  111  is placed into a blowing mold  121 . A blowing molding machine (not shown) is used to blow the blank  111  into a hollow barrel body  122  with a predetermined shape. The barrel body  122  is shaped according to the mold cavity of the blowing mold  121 . Therefore, by means of changing the shape of the blowing mold  121 , the shape of the barrel body  122  can be changed.  
     [0017] Third step of taking out the barrel body  13 : The blowing mold  121  is demolded to take out the barrel body  122 .  
     [0018] As shown in FIG. 3, the procedure of forming outer housing  2  includes the following steps:  
     [0019] First step of color printing  21 : A halftone  212  is used to color print two PET boards  211  with a figure or color  213  on opposite portions to be molded. A deformation amount of the figure or color  213  is reserved.  
     [0020] Second step of suction molding  22 : The two PET boards  211  color printed with the figure or color  213  are placed on a suction mold  221 . A suction molding machine (not shown) is used to respectively suck the PET boards  211  into a front casing  222  and a rear casing  223  with predetermined recessed solid shape. After suction molded, the figure or color  213  is presented on the opposite portions of the front and rear casings  222 ,  223 . The front and rear casings  222 ,  223  are shaped according to the shape of the mold cavity of the suction mold  221 . Therefore, the shape of the suction mold  221  can be changed as necessary so as to change the shape of the front and rear casings  222 ,  223 .  
     [0021] Third step of removing edges  23 : After demolded, the excessive edge materials  231  of the front and rear casings  222 ,  223  are removed with a blade  232  to achieve the front and rear casings  222 ,  223 . After the edge materials  231  are removed, the front and rear casings  222 ,  223  are to be mated with each other to form a hollow outer housing  224 . The interior space of the outer housing  224  corresponds to the shape of the barrel body  122 .  
     [0022] Referring to FIG. 4, the procedure of assembling  3  includes the following steps:  
     [0023] First step of applying glue  31 : A spraying gun  311  is used to spray glue onto the outer circumference of the barrel body  122  or the inner circumferences of the front and rear casings  222 ,  223 .  
     [0024] Second step of adhering  32 : The front and rear casings  222 ,  223  are fitted and adhered onto the barrel body  122 .  
     [0025] Third step of completing  33 : After the front and rear casings  222 ,  223  are integrally adhered to the barrel body  122 , a container product  331  with solid appearance and apparent acute angles is completed.  
     [0026] In the above procedures, the blank  111  is blowing molded into a barrel body  122  with simple shape without any apparent acute angle. The two PET boards  211  color printed with the figure or color  213  are suction molded into a front and a rear casings  222 ,  223  with solid shape and apparent acute angles. After the front and rear casings  222 ,  223  are integrally combined with the barrel body  122 , a container product  331  with solid appearance and apparent acute angles is completed. The container  331  serves to contain therein a liquid or solid.  
     [0027] The housing is composed of the front and rear casings  222 ,  223  which are made by suction molding. By means of the characteristic of suction molding, the acute angles of the outer housing are more apparent and the appearance of the outer housing is solider. Prior to suction molding, the PET boards  211  are previously color printed with a figure or color  213 . After molded, the housing has a desired figure and color so that the container product will have beautified appearance and better visual effect.  
     [0028] Referring to FIG. 5, the appearance of the container product  331  can be formed with multiple acute angles or special configurations. By means of changing the shape of the suction mold, the appearance of the container product  331  can be changed. Therefore, the same barrel body  131  can be assembled with different housings to achieve various patterns of containers.  
     [0029] The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.