Fujimori Kogyo Co., Ltd.

Shionogi Company Limited

Nipro Corporation

Koichi Miura

Toyoaki Suzuki

Takeshi Nizuka

Kenjiro Takayanagi

Manabu Fujimoto

Yukie Ito

Junpei Nomura

Kaori Ikeda

Atsushi Mio

Kenji Omori

Hideji Kashiwagi

Dai Sudo

Masashi Moteki

Hidetoshi Myojyo

Tokoaki Suzuki

Yoshikazu Kato

Kunihiko Kimura

Kenjiro c/o Mitsubishi Chemical Cor Takayanagi

Akemi Kishimoto

Provided are a light-shielding sheet that has a function of shielding light of a specific wavelength and that is capable of preventing a light-shielding substance from being transferred into the contents and seeping out of a container and a container produced using the light-shielding sheet. This light-shielding sheet of the present invention has a multilayer structure of three or more layers including at least one light-shielding layer that shields a specific wavelength and/or eluate-blocking layer that blocks substances eluted from the light-shielding layer. When producing a container from the light-shielding sheet, an eluate-blocking layer A is provided at least between the light-shielding layer and an innermost layer or on the innermost layer, and an eluate-blocking layer B is provided between the light-shielding layer and an outermost layer or on the outermost layer. The light-shielding layer may further double as an eluate-blocking layer.

Light-shielding sheet and container

A pouring port of a container for liquid at one end of which a rubber stopper allowing the penetration of an injection needle therethrough is embedded, wherein: the pouring port is formed by welding a port part, at least the innermost layer of which forming the discharge channel thereof comprises a resin containing a COP-based resin as the main component, with a stopper body part, which holds the rubber stopper and comprises a resin containing a COP-based resin as the main component, via the resin layers containing the respective COP-based resins as the main component; and at least the resin constituting the stopper body part contains a rubber component in an amount of not more than 30% by mass, or has, in the main chain, a molecular structure represented by general formula (1) [wherein R represents a hydrogen atom or an organic group having 1 to 20 carbon atoms; and n represents an integer equal to or greater than 1]and contains a PE-based resin in an amount of 30% by mass or less, and/or contains an antioxidant in an amount of 0.1% by mass or more and not more than 1.0% by mass.

Pouring port, method for producing same and container for liquid provided with the pouring port

A package with multiple chambers, wherein the inside of the package is partitioned into multiple chambers by a weak seal part(s) formed by sealing one sheet having a heat seal layer in at least one surface thereof and the other sheet having a heat seal layer in at least one surface thereof with the heat seal layers facing each other and sealing the peripheral edge parts thereof, and heat-pressing, from the outside of the package, a part of the inner surfaces of the walls of the package with the heat seal layers. The package is characterized in that both of two heat seal layers forming the inner surfaces of the walls include only a cyclic polyolefin resin as a resin ingredient.

Multiple compartment container

A multilayered liquid container having a discharge port welded under specified conditions to a sealant, which is constituted of a resin comprising a cycloolefin resin as a main component. The discharge port is composed of: an innermost layer constituted of a resin comprising a cycloolefin as a main component; and a surface layer whose main part is constituted of a resin comprising a specific type of polyethylene as a main component. According to the present invention, there can be provided a multilayered liquid container, which can prevent an effective component of a content fluid from being adsorbed onto or penetrating through not only the container body, but also the resin constituting the discharge port, and enables high temperature sterilization treatment, coupled with the discharge port having high welded strength and drop strength.

Multilayered liquid container

A medical container comprising a body for containing a medicament, the body of the medical container being formed of a multilayered film comprising (i) a layer formed of a linear polyolefin and (ii) a layer formed of a cyclic polyolefin adjacent to the layer (i), and the layer (i) formed of the linear polyolefin satisfying the following conditions (a) and/or (b):

Medical container and medical duplex container

Multi-chamber container () having its interior partitioned by weak seal portions () provided through detachable heat sealing so that multiple contents are accommodated separately from each other, wherein use is made of heat seal layers consisting of a composition comprising two types of propylene copolymers components (component A and component B) from propylene and ethylene and/or a C-C&#x3b1;-olefin which have the following elution properties. Thus, a region wherein a change of seal strength by a change of heat seal temperature is small has a wide temperature range to thereby facilitate controlling of the seal strength at the weak seal portions. The proportion (mass %) of, to total solution, elution according to the TREF method (temperature: 0 to 140&#xb0; C. and solvent: ODCB) is as follows. With respect to component A: 15 to 50 at 0&#xb0; C., and 5 to less than 15 at 60 to 90&#xb0; C. With respect to component B: 0 to 25 at 0&#xb0; C., and 15 to 70 at 60 to 90&#xb0; C.

Multi-chamber container

A plastic film for medical liquid containers which includes at least thee layers, each layer not containing non-elastomeric block copolymer of benzene-ring-free olefin and propylene, such that the first layer, which is composed mainly of propylene homopolymer, the second layer, which contains polypropylene resin, polyethylene resin, and thermoplastic elastomer, and the third layer, which functions as a sealing layer and is composed mainly of copolymer of propylene and other monomers, are laminated without the aid of bonding layer, with the second layer acting as an intermediate layer.

Plastic film for medical liquid container

Growing community of inventors

Tokyo, Japan

Koichi Miura