The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2001
Filed:
Feb. 24, 2000
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A packing bag is easy to open and allows an end of an content to be easily exposed to the outside by separating heat-bonding portions of external an internal packing films from each other and tearing the external packing film. The packing bag includes two rectangular packing films each having a thermoplastic resinous layer formed on its inner surface. The external and internal packing films are laminated on each other, with surfaces of the thermoplastic resinous layers opposed to each other, a predetermined region extending inward from one side of each of the packing films is formed as a non-bonding portion; a U-shaped peripheral heat-bonding portion is formed on each of the packing films along other three sides thereof, a projected heat-bonding portion connecting both ends of the peripheral heat-bonding portion with each other and projected outward is formed; at least the projected heat-bonding portion is separable; and a notch is formed on at least one edge of an external one of the packing films such that the notch is located at a position adjacent to one end of the peripheral heat-bonding portion.