US 6,629,777 B2Granted

Buffer packing bag

AssigneesSun A. Kaken Co., Ltd., Matsushita Electric Industrial Co., Ltd., Yamato-Esulon Co., Ltd.

InventorsMikio Tanaka, Kazuhiko Hosokawa, Sayuri Nakata, Yoshihito Takechi

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Abstract

The buffer packing bag comprises an air-supplying passage, which is made of plastic films placed one on another and bonded at desirable spots, and an air-inflatable section formed beside the air-supplying passage, which is divided into individual air-inflatable parts, formed by heat-bonded at multiple spots, and check valves, which allow and stop air flow between each of individual air-inflatable parts and the air-supplying passage, and space-making folds, made in both of the divided portions of the air-inflatable section by heat-bonding to make at least two lines in each portions crossing the individual air-inflatable parts, with the formation to make a loading slit by folding inward from both of the width ends along the length side of the base and heat-bonding both of the overlapped areas of the length sides.

Claims13

Dependent claims

A buffer packing bag comprising:

a base made of two substantially rectangular-shaped plastic films placed one on another and heat-bonded along length sides thereof, the base having a first and a second width side;
a flat air-supplying passage with an air inlet formed along said first width side of the base, said second width side being closed;
a flat air-inflatable section formed between the two plastic films and beside said air-supplying passage, said air-inflatable section being divided into multiple individual air-inflatable parts formed by heat-bonded lines running parallel to the length sides;
a flat check valve of plastic film in each of said individual air-inflatable parts functioning to allow and stop air flow between each of said individual air-inflatable parts and said air-supplying passage;
two air-flowing space-making folds formed in said air-inflatable section permitting the first and the second width sides of the base to be folded together in order to contain an article in the buffer packing bag, each air-flowing space-making fold being formed by heat-bonding to make at least two lines at a predetermined interval crossing each of individual air-inflatable parts;
and
a loading slit for said article formed on the base of the bag by folding inward from the first and the second width sides along the length sides of the base, the loading slit appearing between the first and the second width sides of the base which meet each other after the base is folded along said space-making folds,
wherein the bag is inflated by letting air in with pressure through said air inlet and said air-supplying passage and into the air-inflatable section.

5 more elements

A buffer packing bag comprising:

a containing space for an article with a first and a second containing portion formed therein;
and
a loading slit for inserting or removing said article, the containing space,
the first and the second containing portions comprising a base made of plastic films placed one on another and heat bonded along length sides thereof, the base including a plurality of individual air-inflatable parts, said individual air-inflatable parts being formed parallel to each other by heat-bonding the base at multiple spots, each of the air-inflatable parts being provided with a flat check valve made of plastic film,
the first and the second containing portions being formed by folding the base inward from width sides of the base crossing the individual air-inflatable parts and the length sides of the base, causing the loading slit to appear between the width sides of the base after the base is folded,
each of the first and the second containing portions being pocket-shaped with an opening and defined by the loading slit, said opening positioned between an edge of each of the pocket-shaped portions,
a part of the opening being the loading slit, the edges of the pocket-shaped portions being adjacent, making the first and the second containing portions face each other,
a bending fold being provided in the base opposite to said opening, said bending fold being formed by partially heat-bonding the base in a direction crossing the air-inflatable parts, the partial heating bonding allowing an air flow when the air-inflatable parts are inflated by air, thus inflating said buffer packing bag,
wherein the first containing portion contains a part of the article before the second containing portion is folded toward the first containing portion to contain a remaining part of the article.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/996,933Filed 30 Nov 2001
Priority: JP 2000-36399930 Nov 2000
Published: US 2002/0064319 A130 May 2002
Granted: 7 Oct 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

B65D 81/052
Using pillow-like elements filled with cushioning material, e.g. elastic foam, fabric: filled with fluid, e.g. inflatable elements
B65D 33/02
Details of, or accessories for, sacks or bags: local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
B65D 33/24
End- or aperture-closing arrangements or devices: using self-locking integral or attached closure elements, e.g. flaps
B65D
Containers for storage or transport of articles or materials