Abstract
A plastic blank includes a blank structure. The blank structure includes an elongate body portion and a head portion. One of two ends of the body portion is closed, and the head portion is connected to the other end of the body portion. The body portion has a space therein. The head portion has an opening communicating with the space. The outer periphery of the body portion is even so that a stick having product labelling can be attached onto the outer periphery of the body portion. The inner periphery of the body portion has a plurality of ribs protruded inward the space and extending along the body portion to improve the structural strength of the body portion along the length direction.
Claims
1. A plastic blank comprising a hollowed blank structure, wherein the blank structure comprises a body portion and a head portion, the body portion is elongate shaped, one of two ends of the body portion is closed and the head portion is connected to the other end of the body portion, the body portion defines a space therein, the head portion has an opening communicating with the space, the outer periphery of the body portion is an even surface, and the inner periphery of the body portion has a plurality of ribs, each of the ribs is protruded inward the space and extending along the body portion.
2. The plastic blank according to claim 1, wherein each of the ribs is linearly extending at the inner periphery of the body portion along the length direction of the body portion, each of the ribs is equally spaced from adjacent ribs, and the ribs are annularly aligned over the body portion.
3. The plastic blank according to claim 1, wherein each of the ribs is inclinedly extending at the inner periphery of the body portion with respect to the length direction of the body portion.
4. The plastic blank according to claim 1, wherein the extension length of each of the ribs is equal to the length of the body portion.
5. The plastic blank according to claim 1, wherein the extension length of each of the ribs is less than the length of the body portion.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0013] FIG. 1 illustrates a perspective view of a blank according to a first embodiment of the present invention;
[0014] FIG. 2 illustrates a top view of the blank according to the first embodiment of the present invention;
[0015] FIG. 3 illustrates a sectional view showing the blank of the first embodiment is positioned in a mold;
[0016] FIG. 4 illustrates a sectional view showing the blank of the first embodiment is blow-molded in the mold to form a bottle;
[0017] FIG. 5 illustrates a sectional view showing the blank of the first embodiment is blow-molded in a mold shown in FIGS. 9 and 10 to form a bottle;
[0018] FIG. 6 illustrates a perspective view of a blank according to a second embodiment of the present invention;
[0019] FIG. 7 illustrates a top view of the blank according to the second embodiment of the present invention;
[0020] FIG. 8 illustrates a sectional view showing the blank of the second embodiment is positioned in a mold;
[0021] FIG. 9 illustrates a sectional view showing a conventional blank is positioned in a mold; and
[0022] FIG. 10 illustrates a sectional view showing the conventional blank is blow-molded in the mold to form a bottle.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] Please refer to FIGS. 1 to 8, which illustrate a plastic blank according to embodiments of the present invention. The embodiments are provided for illustrative purposes only and not formed as limitations of the present invention.
[0024] In the first embodiment, a plastic blank is provided, as shown in FIGS. 1 and 2. The plastic blank comprises a hollowed blank structure 1. The blank structure 1 comprises a body portion 11 and a head portion 12. The body portion 11 is elongate shaped. One of two ends of the body portion 11 is closed and the head portion 12 is connected to the other end of the body portion 11. The body portion 11 defines a space 13 therein. The head portion 12 has an opening 14 communicating with the space 13. The outer periphery 111 of the body portion 11 is even. The inner periphery 112 of the body portion 11 has a plurality of ribs 15 each protruded inward the space 13 and extending along the body portion 11.
[0025] In addition, in this embodiment, each of the ribs 15 is linearly extending at the inner periphery 112 along the length direction of the body portion 11, and each of the ribs 15 is equally spaced from adjacent ribs 15, the ribs 15 are annularly aligned over the body portion 11, and the extension length of each of the ribs 15 is equal to the length of the body portion 11.
[0026] As shown in FIGS. 3 and 4, in this embodiment, when the blank structure 1 is blow-molded in a mold 2, the head portion 12 of the blank structure 1 is positioned and the body portion 11 of the blank structure 1 project into a cavity 21 of the mold 2. Therefore, when blow molding technique is applied to the blank structure 1, the body portion 11 of the blank structure 1 is fitted with the cavity 21 of the mold 2 and a bottle 3 can be produced. The outer periphery of the bottle 3 corresponds to the inner profile of the cavity 21 and is an even surface 31, and the ribs 15 are blow-molded to form longitudinal rib structures 32 in the bottle 3. Accordingly, because the surface 31 of the bottle 3 is uniform and not uneven, a stick having product labelling can be smoothly attached onto the surface 31 of the bottle 3. In addition, because of the formation of the longitudinal rib structures 32, the structural strength along the length direction of the bottle 3 is improved, and the bottle 3 would not deform easily when the bottle 3 is pressed.
[0027] Alternatively, as shown in FIG. 5, the blank structure 1 can also be blow-molded in a conventional mold 92 to form a bottle 4. Accordingly, not only the surface 41 of the bottle 4 is uneven so as to improve the structural strength of the bottle 4 along its width direction, but also the bottle 4 has the longitudinal rib structures 42 therein so as to improve the structural strength of the bottle 4 along its length direction. Hence, when the bottle 4 is pressed, the bottle 4 would not deform easily.
[0028] The present invention may have other embodiments which are variations therebetween. Please refer to FIGS. 6 and 7, which illustrate a second embodiment of the present invention. The blank structure 5 also comprises a body portion 51 and a head portion 52. The body portion 51 has a space 53 therein. The head portion 52 has an opening 54. The outer periphery 511 of the body portion 51 is even. In this embodiment, each of the ribs 55 is inclinedly extending at the inner periphery 512 of the body portion 51 with respect to the length direction of the body portion 51, and the extension length of each of the ribs 55 is less than the length of the body portion 51. As shown in FIG. 8, a bottle 6 formed by the blank structure 5 of the second embodiment also has an even surface 51 and the bottle 6 further has a plurality of reinforce ribs 62 formed by the ribs 55. although the reinforce ribs 62 are shorter than the body portion 51, a better structural strength along the length direction of the body portion 51 can be provided as compared with a bottle formed by the conventional blank. In addition, a stick having product labelling can also be smoothly attached on the surface 61 of the bottle 6 of the second embodiment.
