Sony Corporation

Dai Nippon Printing Co., Ltd.

Seizo Seki

Hiroshi Ozaki

Yoshitaka Tsukidate

Toshiyuki Kaku

Chie Iwamoto

Takashi Asakura

Takayuki Aneha

Masayuki Kawajiri

The present invention relates to a packing material used for wrapping an article to be packed and sealing and packing the article to be packed by heat-sealing mutually superposed end parts. The packing material is composed of a biodegradable film. Heat sealing agent layers are selectively provided in the heat sealing positions or the heat-sealed parts of the biodegradable film. The heat sealing agent layers are provided on the front surface and the back surface, the front surface and the front surface, or the back surface and the back surface of the mutually superposed biodegradable film when the article to be packed is packed. On the biodegradable film, picture pattern layers as well as the heat sealing agent layers are formed within a range 70% or less as large as the entire area including the front surface and the back surface of the biodegradable film.

Packaging material and information recording media packaged by packaging material

A package for a cassette storage case ( ) that has a cassette insertion opening ( ) formed at one lateral side thereof, cassette guide cuts ( ) formed in main front and rear surfaces ( ) and ( ) thereof at the side of the opening ( ), and a cassette receiving space ( ) defined by the front and rear surfaces ( ) and ( ) and the other lateral side thereof, so that a tape cassette ( ) is inserted into the cassette receiving space ( ) through the cassette insertion opening ( ). A sealing/packaging tape ( ) is wound on the cassette storage case ( ) across the cassette insertion opening ( ) and ( ) is wider than the cassette guide cuts ( ) in the cassette storage case ( ). Thus the sealing/packaging tape ( ) covers the cassette guide cuts ( ) to seal and wrap the cassette storage case ( ). Thereby, a positive sealing and packaging can be realized with a reduced amount of the packaging material (to save the resources). This sealing and packaging permits to seal the cassette guide cuts ( ) formed in the cassette storage case ( ) being packaged, improve the appearance of the tape cassette as a commodity and facilitate unpacking of the cassette storage case ( ).

Package for cassette storage case

In a box-shaped packing case 20 having an overlap portion at which a third folding plate 24 folded from a first holding direction is superposedly adhesively attached onto first and second folding plates 22, 23 which are folded from two directions different from the first folding direction of the third folding plate 24 so that the boundary portions thereof are not overlapped with each other, the shape of the boundary portion between the first and second folding plates 22, 23 when the first and second folding plates 22, 23 are folded is designed so that the length of an adhesion area to which the third folding plate 24 adheres approaches to the length of the third folding plate 24 at a maximum irrespective of the boundary portion.

Packing case

A wrapping method in which a wrapped product is wrapped by a sheath film and partly-overlapped portions of the sheath film are melt-bonded by heat to heat-seal the sheath film. When the user opens the sheath film, the user can tear the same with ease. A heat sealing area of the sheath film (1) is printed by a halftone printing portion (10) to uniformly reduce the whole bonding area, thereby decreasing a bonding strength.

Method for wrapping up a cassette case in a thin film

A package for wrapping an object in which an outer packaging film can be positively unsealed without damaging the object or by using a strong force during unsealing. A non-adhered part which becomes an opening tap (10) for unsealing is formed in a part of an overlapped portion of an outer packaging film (2), weakly adhered parts (11a), (11b) each having a low degree of adhesiveness are formed at left and right sides of the opening tap (10), and a slit (12) is provided in one weakly adhered part only (11a) which allows for the outer packaging film (2) to be torn easily.

Packaging body

An information storage medium packaging body comprises a case 30 for containing an information storage medium, a packaging film 10 for packing the case 30, and the packaging film 10 includes a heat shrinkable film 11. A hologram layer 20 is formed on a front surface of the heat shrinkable film 11. An offset preventing layer 23 and a printed pattern layer 12 are formed on the back surface of the heat shrinkable layer 11.

Information storage medium packaging body

A packaging structure for packaging a packaged article having a rectangular parallelpiped shape, such as a tape cassette accommodating case and a disc cartridge accommodating case includes an adhesive portion and at least one non-adhesive portion formed on a portion wherein one end of a film-shaped packaging material overlaps the other end of the film-shaped packaging material when the packaged article having a rectangular parallelpiped shape is packaged by the film-shaped packaging material. The packaged article is packaged by bonding the adhesive portion and the non-adhesive portion is left as an unwrapping start portion.

Packaging method and packaging structure for articles such as those

A packaging kit for simultaneously packaging a casing holding a recording medium configured for recording information signals and a main card arranged for sheathing the casing and which is used as an accessory index card having indications of, for example, titles representing the recording contents of the recording medium. The main card employed for the packaging kit has printed indications of the titles showing the recording contents on its one surface and also has a subsidiary card releasably bonded to its opposite surface. The subsidiary card is coated with an adhesive to form an adhesive layer. The opposite surface of the main card, to which is bonded the subsidiary card, has been processed for releasing to permit easy release of the subsidiary card having the adhesive layer. The main card is formed of a paper material having the basis weight of 170 to 210 g/m.sup.2, while the subsidiary card is formed of a paper material having the basis weight of 60 to 100 g/m.sup.2. By layering the main card and the subsidiary card, saving in the material and reduction in the number of component parts of the packaging kit may be achieved, while the main card may be improved in strength.

Packaging kit for recording medium

A partly-overlapped portion of a sheath film is meltbonded by heat to provide a seal which a user can tear open with ease. A heat sealing area of the sheath film is halftone printed to reduce the bonding area, thereby decreasing the bonding strength. A tearing portion is provided along the heat seal which is printed so that it has a bonding strength which gradually increases along the tear part until it reaches the bonding strength of the remainder of the heat seal. A curl section having minimal bonding strength relative to the tearing portion of the heat seal is induced to curl up using heat treatment to allow the user to grasp the sheath film at the tear part.

Growing community of inventors

Miyagi, Japan

Seizo Seki