Yoshino Kogyosho Co., Ltd.

Hayakawa Rubber Company Limited

Shuichi Koshio

Masaaki Sasaki

Toshio Imai

Yoshio Akiyama

Hiroaki Tokuda

Masashi Yoneyama

Hideo Kushida

Takashi Miya

Shigeru Tomiyama

Hiroki Nii

Tadashi Hayakawa

Shigeru Yoneyama

Ban Tanaka

Shoji Tanabe

Makoto Busujima

Kosaku Yamada

Masashi Sasaki

Kiyokazu Ikai

Tadashi Kuriyama

Sumio Takahashi

Naoyuki Kojima

The blow molded preform of a laminated wall structure comprises a bulging shoulder portion, which has a diameter that widens slightly in the downward direction; a bottom shell portion for molding the bottom, which has been blow molded from the corresponding portion of parison P so as to have a widened and deformed shape; an inner overhang wall portion in any position starting from the opposite side of the neck ring and ending at the upper portion of the bulging shoulder portion, with the inner wall portion having a diameter that widens in the downward direction; and/or a radially widened connecting portion of an arced shape, which has a larger diameter than the barrel portion so that the entire bottom including the bottom shell portion takes a bulging spherical shape. With this configuration, no thick area is formed in the inner overhang wall portion on the opposite side of the neck ring and/or in the pinch-off portion.

Synthetic resin preform to be biaxially stretched and blow molded into a bottle

A container has a body which comprises front end rear walls, and the side walls. Each of the front and rear walls has an elliptic cross section, and is provided with a lateral recess. Each of the side walls is a vertical plan which intersects the elliptic cross section of the front and rear walls, and is provided with a plurality of reinforcements. The container has a bottom which comprises a peripheral wall connected to the body and a bottom wall. The peripheral wall comprises slightly inclined front and rear walls, and side walls inclined by a predetermined angle. The peripheral wall is provided with a reinforcing rib.

Synthetic resin container with thin wall

The blow molded preform of a laminated wall structure comprises a bulging shoulder portion which has a diameter that widens slightly in the downward direction; a bottom shell portion for molding a bottom, which has been blow molded from a corresponding portion of a parison so as to have a widened and deformed shape; an inner overhang wall portion in any position starting from the opposite side of a neck ring and ending at the upper portion of a bulging shoulder portion, with an inner wall portion having a diameter that widens in the downward direction; and/or a radially widened connecting portion of an arced shape, which has a larger diameter than a barrel portion so that the entire bottom including a bottom shell portion takes a bulging spherical shape.

A tack label difficult to peel from a container in a processing environment with normal temperature water and easy to peel from the container in a processing environment with hot water and a plastic container. The tack label according to this invention includes a label base material, a printing layer formed on one surface of this label base material, and an adhesive layer formed on the surface of the other of a label base material. The adhesive layer comprises an adhesive that is difficult to dissolve under an environment with normal temperature water and easy to dissolve under a processing environment with hot water. The result is a tack label that is difficult to peel from the container in a washing process, but easy to peel in a regenerating process.

Tack labels and plastic containers with such tack labels

It is an object of the present invention to prevent the edge of the in-molded label from the crack due to the impact of dropping the container, especially to prevent the occurrence of the crack on the thin synthetic resin container and to provide the synthetic resin container which a reinforce rib is disposed on the wall surface of the container body corresponding to the edge of the in-molded label to surround the label edge or to locate the label edge in said rib.

Synthetic resin container bearing label

An easily regeneratable printed thermoplastic resin product is provided by printing it with a specific radiation-curable ink composition and curing the printed ink with radiation to form a cured ink film thereon. The ink composition comprises a vehicle mixture containing: (A) at least one linear polyester oligomer and/or polymer substantially free of an acid group and a polymerizable double bond on the linear polyester chain wherein 1 to 10 double bonds are pendent from the linear polyester chain, and/or mixture thereof, (B) at least one single double bond-containing carboxylic acid and/or ester and/or amide wherein the acid has at least one acid group, and/or mixture thereof, (C) a double bond-containing polycarboxylic ester wherein 2 to 10 acid groups are present and at least 2 double bonds are pendent from the carboxylic ester having 2 to 10 acid groups, (D) at least one double bond-containing fluorinated carboxylic ester, and/or block copolymer comprising a fluorinated alkyl group-containing polymer segment and a (meth)acrylic polymer segment, and/or block copolymer comprising a siloxane group-containing polymer segment and a (meth)acrylic polymer segment, and/or mixture thereof, (E) a double bond-containing carboxylic ester, having at least 2 double bonds and free of an acid group, provided that it is excluded from the above-mentioned ingredient (A), and (F) at least one single double bond-containing carboxylic ester and/or amide and/or imide free of an acid group, and/or mixture thereof, wherein the acid value of the vehicle mixture is from 5 to 100. The ink is useful in displaying and decorating trade names, designs, explanatory notes, bar code, etc. on specific thermoplastic products and the cured ink film is easily detachable with an aqueous alkali solution.

Printed thermoplastic resin products and method for printing such

A radiation-curable ink composition contains a vehicle mixture comprising: (A) at least one linear polyester oligomer and/or polymer substantially free of an acid group and free of a polymerizable double bond in a molecule, wherein 1 to 10 double bonds are pendent from the linear polyester chain, and/or mixture thereof, (B) at least one single double bond-containing carboxylic acid wherein the acid has at least one acid group, and/or carboxylic ester of the said acid, and/or carboxylic amide of the said acid, and/or mixture thereof, (C) a double bond-containing polycarboxylic ester, wherein 2 to 10 acid groups are present and at least 2 double bonds are pendent from the ester having 2 to 10 acid groups, (D) at least one double bond-containing fluorinated carboxylic ester, and/or block copolymer comprising a fluorinated alkyl group-containing polymer segment and a (meth)acrylic polymer segment, and/or block copolymer comprising a siloxane group-containing polymer segment and a (meth)acrylic polymer segment, and/or mixture thereof, (E) a double bond-containing carboxylic ester, having at least 2 double bonds and free of an acid group, provided that it is excluded from the above-mentioned ingredient (A), and (F) at least one single double bond-containing carboxylic ester and/or amide and/or imide free of an acid group, and/or mixture thereof, wherein the acid value of the vehicle mixture is from 5 to 100, is provided. The ink is useful in displaying and decorating trade names, designs, explanatory notes, bar code, etc. on specific thermoplastic products and the cured ink film is easily detachable with an aqueous alkali solution.

Ink compositions

A hollow blow-molded bottle-shaped container of biaxially oriented resin mixture material comprising a polyethylene terephthalate resin and a xylylene group-containing polyamide resin, wherein the resin mixture material contains 5 to 30% of the xylylene group-containing polyamide resin to the polyethylene terephthalate resin. In this container, inner and outer surface layers of the container are formed of the polyethylene terephthalate resin, and the intermediate layer of the container is formed of the mixture resin material. In this manner, the gas barrier properties of the container can be enhanced.

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Matsudo, Japan

Shuichi Koshio