US 6,981,617 B2 | ||
Extrusion container | ||
Hiroyuki Nakamura, Koto-ku (Japan); Masashi Yoneyama, Matsudo (Japan); and Takayuki Goto, Koto-ku (Japan) | ||
Assigned to Yoshino Kogyosho Co., Ltd., Tokyo (Japan) | ||
Appl. No. 10/469,421 PCT Filed Nov. 29, 2002, PCT No. PCT/JP02/12494 § 371(c)(1), (2), (4) Date Sep. 24, 2003, PCT Pub. No. WO03/045804, PCT Pub. Date Jun. 05, 2003. |
||
Claims priority of application No. 2001-366726 (JP), filed on Nov. 30, 2001. | ||
Prior Publication US 2004/0217128 A1, Nov. 04, 2004 | ||
Int. Cl. B65D 37/00 (2006.01) |
U.S. Cl. 222—215 | 12 Claims |
1. An extrusion container comprising:
a blow-molded, bottle-shaped, main container body, comprising:
in turn, a separably laminated outer shell layer, forming an outer container body that is squeeze-deformable and has a restoration-enabling
flexibility, and inner layer, forming an inner container body that contains contents in its interior and is deflated inwardly
and deformed in a volume-reducing manner by decrease of internal pressure, and
an extrusion cap body, having an opening and being fitted to a mouth part of said main container body,
where said extrusion cap body is provided with a first non-return function part, having a function of preventing the reverse
flow of the contents from said opening into the inner container body and the inflow of external air, and
said outer container body has an external air introduction part for introduction of external air into an interlayer part between
said outer shell layer and inner layer, said external air introduction part being arranged to be in communication with a second
non-return function part, having a function of sealing air in the interlayer part during the squeezing process, and
at least two adhesive bands of longitudinal band form, each of which adheres and fixes said outer shell layer and inner layer
together along the entire height range while avoiding the external air introduction part,
wherein the width of each of said adhesive bands is set so as to disable complete closure of the plane cross section by free
deformation of non-adhered inner layer parts, which are the inner layer parts between said adhesive bands, and
wherein the rigidity of the outer shell layer is set so that, in the state where free deformation of said non-adhered inner
layer parts reaches a limit due to decrease of the contents and tension acts at said non-adhered inner layer parts and the
side end parts of the adhesive bands, the outer shell layer is deformed in a region of the adhesion bands in a direction toward
the interior of said main container body by tension generated by further normal squeezing operation by a human hand, to reduce
a volume of a contents passage formed between the inner layer in the region of the adhesion bands and said non-adhered inner
layer parts.
|