Taisei Kako Co., Ltd.

Nihon Tenganyaku Kenkyusho Co., Ltd.

Nihon Tenganyaku Kenkyusyo Co., Ltd.

Nihon Tenganyaku Kankyusho Co., Ltd.

Masaru Otsuka

Hirokazu Mihashi

Keiji Hamamoto

Kazuya Iwahashi

Yorishisa Uetake

Kenji Matsuura

Yasuyuki Shiraishi

Yorihisa Uetake

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 () communicating with an introduction hole () via a space between an outer layer bottle. () and an inner layer bag () is provided in an outer layer mouth portion (). The test hole () is closed by the inner layer bag () and an inside plug () fitted in the mouth portion (). Further, the introduction hole () is provided in a middle portion of a body which is pressed by a finger when the bottle is squeezed. The introduction hole () is closed by the finger.

Delaminatable laminated bottle

A filter-equipped container which, particularly in a small-sized eyedrop bottle or the like, is capable of accurate dropping while preventing bubbles from being involved when a contents liquid is to be delivered through a delivery port. To solve such problem, a plug bodydisposed in the mouth of a bottleis provided with a delivery passage for delivering contents liquid received in the bottle, the delivery passage being provided with a filter. The filteris composed of a filter filmfor filtering bacteria to prevent the latter from permeating from upstream to downstream as seen in the direction of delivery, and a contents liquid holding memberof porous material that has microscopic pores, disposed upstream of the filter film, the contents liquid holding memberbeing in planar contact with the filter film

Container with a filter

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 () communicating with an introduction hole () via a space between an outer layer bottle () and an inner layer bag () is provided in an outer layer mouth portion (). The test hole () is closed by the inner layer bag () and an inside plug () fitted in the mouth portion (). Further, the introduction hole () is provided in a middle portion of a body which is pressed by a finger when the bottle is squeezed. The introduction hole () is closed by the finger.

Production method for a delaminatable laminated bottle

Growing community of inventors

Aichi, Japan

Masaru Otsuka