Sumitomo Bakelite Company Limited

Taiwan Semiconductor Manufacturing Comp. Ltd.

Tadao Takagaki

Seigo Akazawa

Yasuo Noguchi

Ikuo Tonouchi

Kisaku Chigusa

Mituharu Katayama

Shizuo Hirose

There is disclosed a process for producing a self-supporting package having an outlet stopper which comprises: (a) a process for supplying a self-supporting bag which has an opening part for filling contents at the top thereof and holding the bag at a vertical position, (b) a process for opening the opening part of the self-supporting bag, (c) a process for filling the self-supporting bag with contents, (d) a process for supplying an outlet stopper which has an outlet with a stopper on a ship-shaped flange to the opening part, and (e) a process for sealing the side faces of the ship-shaped flange of the main part of the outlet stopper to the inner side faces of the opening part of the self-supporting bag. These processes are conducted in the order of the processes (a), (b), (c), (d) to (e), consecutively. An apparatus comprising mechanisms corresponding to the processes (a) to (e) is also disclosed. The self-supporting package having an outlet stopper and filled with contents can be produced with high productivity. Shape of the self-supporting package can be freely selected. Sealing time is shorter than that of conventional heat sealing processes. The sealing can be surely achieved even when foreign substances are present on the face of sealing. The self-supporting package produced has excellent sealing stability and simple structure, is provided with an outlet stopper at the top of the package, and is easy for handling.

Process for producing a self-supporting package having an outlet stopper

An outlet stopper includes a cap part made of a resin and having a cylinder which has a screw thread on a side face thereof, and an outlet part made of a resin and having a disk flange which has a bottom face thereof coated with an adhesive. The disk flange has a hole at a center portion thereof. The outlet part has another cylinder which is placed on top of the disk flange and has a screw thread on a side face thereof which fits the screw thread on the cylinder in the cap part. An opening blade is fixed to the inside of the cap part, and a stopping ring which has a protrusion projected outward therefrom has a break therein for opening the ring and for stopping the insertion of the cap part and the outlet part into each other before reaching a fully screwed-in position. The outlet stopper can be easily attached with the adhesive to a package commercially available in a pouch form. By attaching the outlet stopper, packages made of soft plastic bags can be handled in the same manner as rigid packages having an outlet stopper, such as hard bottles. Thus, a major drawback of packages of a pouch form can be eliminated.

Outlet stopper for pouch-type fluid containers

A process for production of a bag having linear ribs uses an apparatus for forming linear ribs which comprises a plate mold having linear protrusions on both faces thereof and upper and lower female molds placed at both sides of the mold, having penetrated linear cavities at positions corresponding to those of the linear protrusions and capable of opening and closing as desired. Multi-layer resin films are inserted between the plate mold and the female molds. The molds are heated and pressed to each other to prepare multi-layer resin films having linear ribs. A bag is produced using the multi-layer resin film having linear ribs thus prepared. Ribs convex to the outside can be formed on the multi-layer film comprising a layer of a resin having a low melting point at the inside and a layer of a resin having a high melting point at an outer side thereof. The self-supporting bag produced by the process has a higher stiffness.

Process for production of a bag having linear ribs

Self-supporting bag, a method of production thereof and an apparatus for

The present invention provides an easily openable sealed container consisting of a lid and a main body having a flange, wherein a sealing layer of the main body or a sealing layer of the lid has a number of microdents in the flange portion, the thickness of said sealing layer is 10-100 .mu., said sealing layer and an adjacent layer contacting therewith have a lamination strength of 300-2,000 g/25 mm width, and said sealing layer and the lid or the main body are sealed in the flange portion at a strength larger than said lamination strength, as well as a process for producing said sealed container.

Easily openable sealed container and process for producing the same

The present invention provides an easily openable sealed container consisting of a lid and a main body having a flange, wherein a sealing layer of the main body or a sealing layer of the lid has a number of microdents in the flange portion, the thickness of said sealing layer is 10-1000 .mu., said sealing layer and an adjacent layer contacting therewith have a lamination strength of 300-2,000 g/25 mm width, and said sealing layer and the lid or the main body are sealed in the flange portion at a strength larger than said lamination strength, as well as a process for producing said sealed container.

Easily openable sealed container

A printed container for food packaging, particularly a heat-resistant printed container for food packaging which can be subjected to heat sterilization and heat cooking, can be produced by a process which comprises winding, around the side of a container main body, a label consisting of a transparent heat-shrinkable resin film having a cylindrical shape whose circumference is slightly larger than the circumference of said side and further having a print at the inner side, and then carrying out:

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Tokyo, Japan

Tadao Takagaki