Delaminatable laminated bottle
Inventors
Iwahashi, Kazuya • Mihashi, Hirokazu • Hamamoto, Keiji • Otsuka, Masaru • Uetake, Yorishisa • Matsuura, Kenji
Assignees
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Publication Number
US-8118183-B2
Publication Date
2012-02-21
Expiration Date
Abstract
A particularly small eyedropper or the like is provided, which has a construction such that, when a body thereof is squeezed, an introduction hole thereof can be easily closed to compress air in a space between an inner layer and an outer layer thereof even in the absence of a check valve in the introduction hole, and defectiveness of the introduction hole can be easily checked. To this end, a test hole (19) communicating with an introduction hole (17) via a space between an outer layer bottle. (1) and an inner layer bag (16) is provided in an outer layer mouth portion (4). The test hole (19) is closed by the inner layer bag (16) and an inside plug (21) fitted in the mouth portion (4). Further, the introduction hole (17) is provided in a middle portion of a body which is pressed by a finger when the bottle is squeezed. The introduction hole (17) is closed by the finger.
Core Innovation
The invention describes a delaminatable laminated bottle/eyedropper in which an outer layer bottle and an inner layer bag are provided so that the inner layer bag is delaminatable from the outer layer bottle. The outer layer bottle has a squeeze-deformable bottomed tubular body, a shoulder portion, and a mouth portion, and the inner layer bag is disposed on an inner surface of the outer layer bottle. A space between the outer layer bottle and the inner layer bag is formed to be pressurized by air introduced from outside via an introduction hole.
The outer layer bottle includes an introduction hole for introducing outside air into the space between the outer layer bottle and the inner layer bag, and the introduction hole is closable by a finger when the body is squeezed to be deformed by pressing the front and rear wall portions. The document further includes a test hole in the mouth portion that communicates with the introduction hole, and the test hole is sealed by the inner bag and an inside plug/member. Defective checking is performed by injecting air from the test hole and detecting air flow/communication to confirm the introduction hole is properly formed/closed.
The outer bottle is characterized by a flat tubular peripheral wall having rigid front and rear wall portions spaced in opposed relation and left and right wall portions connecting corresponding edges, with the left and right wall portions having an arcuate shape and bulged laterally outward. Upper and lower connection portions connect edges of the front and rear wall portions to the shoulder portion and bottom portion, respectively, and thickness relationships are selected so that the front and rear wall portions can be pressed toward each other without significant warping while the left and right wall portions deform elastically. The disclosure also relates to forming the introduction hole and test hole using mold pins during production, and to optional dispense valve/filter/nozzle cap structures.
Claims Coverage
The partial content includes two independent claims, each covering a delaminatable laminated bottle with a finger-closable introduction hole for outside air, together with specific outer-wall geometry and thickness selection for squeeze deformation, including a comparative thickness constraint for connection portions in both claims.
Delaminatable laminated bottle with finger-closable introduction hole for outside air
A delaminatable laminated bottle with an outer layer bottle having a squeeze-deformable bottomed tubular body, a shoulder portion, and a mouth portion, and an inner layer bag delaminatable from an inner surface of the outer layer bottle; wherein the outer layer bottle has an introduction hole for introducing outside air into a space between the outer layer bottle and the inner layer bag; wherein the introduction hole is provided in one of the front wall portion and the rear wall portion; and wherein the introduction hole is adapted to be closed by a finger when the body is squeezed to be deformed by pressing the front and rear wall portions by the finger.
Outer wall geometry and thickness selection enabling squeeze deformation without significant warping
The body has a flat tubular peripheral wall including a pair of generally flat front and rear wall portions spaced a predetermined distance in opposed relation and left and right wall portions respectively connecting edges; the left and right wall portions have an arcuate shape with an anteroposteriorly middle portion bulged laterally outward; the body further has an upper connection portion and a lower connection portion; and wherein thicknesses are selected so that the front and rear wall portions can be pressed toward each other by squeezing forces without being significantly warped and the left and right wall portions are elastically deformable to allow the front and rear walls to move toward each other.
Connection portions thinner than front and rear wall portions
The connection portions have a thickness and an average thickness of at least one of the connection portions is less than one half an average thickness of the front and rear wall portions.
Delaminatable laminated bottle with planar-or-curved front/rear walls and finger-closable introduction hole
A delaminatable laminated bottle with an outer layer bottle having a squeeze-deformable bottomed tubular body, a shoulder portion, and a mouth portion, and an inner layer bag delaminatable from an inner surface of the outer layer bottle; wherein the outer layer bottle has an introduction hole for introducing outside air into a space between the outer layer bottle and the inner layer bag; and wherein the introduction hole is provided in one of the front wall portion and the rear wall portion and is adapted to be closed by a finger when the body is squeezed to be deformed by pressing the front and rear wall portions by the finger.
Arcuate left/right wall portions and elastic deformation with thickness selection
The body has a flat tubular peripheral wall with a pair of front and rear wall portions that are either planar or slightly curved and spaced a predetermined distance in opposed relation and left and right wall portions connecting edges; the left and right wall portions have an arcuate shape with an anteroposteriorly middle portion bulged laterally outward; and wherein thicknesses are selected so that the front and rear wall portions can be pressed toward each other by squeezing forces without being significantly warped and the left and right wall portions are elastically deformable by the squeezing forces to allow the front and rear walls to move toward each other.
Connection portions thickness constraint relative to front and rear walls
An average thickness of the left and right wall portions is less than an average thickness of the front and rear wall portions, and the connection portions have a thickness and an average thickness of the connection portions is less than one half the average thickness of the front and rear wall portions.
Across the independent claims, the core claim coverage focuses on a delaminatable laminated bottle in which outside air is introduced through an introduction hole that is closable by a finger during squeezing, combined with specified outer-wall geometry (front/rear spacing and arcuate bulged left/right wall portions) and thickness selection to enable inward deformation without significant warping, including comparative thickness constraints that make the connection portions thinner than the front and rear wall portions.
Stated Advantages
Documented Applications
No documented applications found
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