Toyo Seikan Group Holdings, Ltd.

Toyo Seikan Kaisha, Ltd.

Norio Akuzawa

Kentarou Ichikawa

Nobuhisa Koiso

Hiroki Iino

Tetsuro Nomura

Yoshihiro Saruwatari

Ken Kashiwabara

Kazuki Nakajima

Shinya Jumyo

The present invention relates to a carrier for bio-related molecule immobilization, which comprises a resin substrate, an amino group-containing compound layer that is formed on the resin substrate, and a polyvalent carboxylic acid layer that is formed on the amino group-containing compound layer. The carboxyl groups in the polyvalent carboxylic acid layer are actively esterified; and the (COO peak intensity)/(C&#x2014;C peak intensity) ratio of the C1s spectrum is from 0.064 to 0.12 (inclusive) if the carrier surface before the active esterification is measured by X-ray photoelectron spectroscopy. The present invention also relates to a carrier for bio-related molecule immobilization, which comprises a water repellent resin substrate, an aminoalkyl silane layer that is formed on the resin substrate and a polyvalent carboxylic acid layer that is formed on the aminoalkyl silane layer, and which is characterized in that: the carboxyl groups in the polyvalent carboxylic acid layer are actively esterified; and the resin substrate is exposed after the formation of the aminoalkyl silane layer.

Carrier for bio-related molecule immobilization

A foamed and stretched plastic bottle having, in the body portion thereof, a foamed region in which foamed cells are distributed, wherein, in at least a portion of the foamed region, the lengths of the foamed cells in the axial direction of the bottle are so distributed as to gradually decrease as the positions of the foamed cells shift from the outer surface side of the body portion toward the central portion thereof and then gradually increase as their positions shift from the central portion thereof toward the inner surface side thereof. The foamed and stretched plastic bottle of the invention exhibits excellent light-shielding property.

Foamed and stretched plastic bottle

A composite foamed container forming, in the body portion, thereof, a foamed region in which foamed cells are distributed, the foamed region including a first gradationally foamed region A having a gradational distribution of the foamed cells of which the length in the direction of maximum stretch gradationally decreasing from the outer surface side of the body portion toward the inner surface side thereof and a second gradationally foamed region having a gradational distribution of the foamed cells of which the length in the direction of maximum stretch gradationally decreasing from the inner surface side of the body portion toward the outer surface side thereof. The container has a large resistance against the pressure exerted on the outer surface, good liquid-dispelling property and, at the same time, has improved appearance and heat resistance.

Composite foamed container

A stretched and foamed plastic formed body forming, in at least a portion thereof, a foamed region which incorporates foamed cells therein, wherein the foamed cells have a flat shape with a maximum thickness of not more than 30 &#x3bc;m and an average aspect ratio of not less than 4 as viewed in cross section of the formed body perpendicular to a direction in which the formed body is stretched to a maximum degree, and a non-foamed plastic skin layer having no foamed cell distributed therein is formed on the outer surface of the foamed region. The formed body is, further, blended with a non-lustrous pigment as the coloring agent, which is different from a lustrous pigment such as flaky pigment, and exhibits a metal color over the foamed region thereof. The foamed formed body exhibiting a metal color and, specifically, a gold color or a silver color is thus provided without using any expensive lustrous pigment such as metal powder pigment or flaky pigment.

Stretched and foamed plastic formed body having appearance of a metal color

A foamed plastic container in which the cell diameters vary along a gradient so as not to decrease the content protection performance, in a manner quite different from the foamed cells distributed in the conventional foamed containers. The foamed plastic container has a container wall formed by using a plastic material and in which foamed cells are distributed, the lengths of the foamed cells in the surface direction of the container wall decreasing from the outer surface of the container toward the inner surface thereof.

Stretched and foamed plastic container and method of producing the same

A foamed and stretched plastic container having a basic structure which includes a mouth portion and a body wall continuous to the mouth portion and is stretch-formed, the body wall forming a foamed region where foamed cells are distributed, and the mouth portion being an unfoamed region where no foamed cell is present, wherein the foamed cells present in the foamed region have a flat shape being stretched in the direction of stretch, and the foamed cells positioned in the central portion in the direction of thickness of the container wall have the largest lengths in the direction of maximum stretch.

Foamed and stretched plastic containers and method of producing the same

[Problems] To provide a foamed plastic container in which the cell diameters are varying along a gradient so will not to decrease the content protection performance, quite differently from the foamed cells distributed in the conventional foamed containers. [Means for Solution] The foamed plastic container has a container wallformed by using a plastic material and in which foamed cellsare distributed, the lengths of the foamed cells in the surface direction of the container walldecreasing from the outer surface of the container toward the inner surface thereof.

Growing community of inventors

Kanagawa, Japan

Norio Akuzawa