JPS6131744Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a flat folded disposable dust collecting paper bag for a vacuum cleaner.

The opposite edges of a rectangular base paper are pasted, and the paper is folded into a cylindrical shape so that a gusset is formed on the sides. A dust collection paper bag (dust collection filter) equipped with an air intake port has been known for a long time, as shown in FIGS. 16 and 17 of Japanese Patent Application Laid-Open No. 56-130131, for example. In such conventional paper bags, the openings at both ends are folded and sealed, and as a result, the gusset does not fully expand in the vicinity of the folded and sealed portions, that is, the paper bag does not fully inflate. There were flaws.

The purpose of the present invention is to increase the dust storage capacity, that is, the volume, of such a paper bag, and by pasting and sealing only the opposing inner surfaces of the openings at both ends, the gusset can be sufficiently secured near both ends. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention, which relates to a stretchable paper bag that is easy to stretch, will be described in detail below with reference to embodiments shown in the drawings.

A dust collecting paper bag for a vacuum cleaner, which is made by pasting the left and right cut ends of a sheet of base paper to form a cylinder, forming gussets on the left and right sides and folding it flat, 1 is installed inside the vacuum cleaner body. Well-known paperboard member 2 for
is an upper surface portion that is integrally attached around the air intake port 3, and outer folding lines 4, 4' are formed at both left and right ends of the upper surface portion. Reference numeral 5 denotes a bottom part wider than the top part, which is disposed opposite to the top part, and outer folding lines 6, 6' are similarly formed at both left and right ends of the bottom part. The left and right side parts 7, 7' partitioned between the top part 1 and the bottom part 5 by the four outer folding lines 4, 4', 6, 6' have a section extending from the center to the top part. One inner folding line 8, 8' is formed near the folding line 4, 4',
The gussets are formed on the left and right side surfaces by each of these three folded lines. The upper and lower ends of the paper bag are connected to the corresponding top surface 1 at the gusset portion, and the side portion from the left or right inner fold line 8 or 8' to the corresponding left or right outer fold line 4 or 4'. The portion of the side surface that is pasted and extends from the inner folding line 8 or 8' to the corresponding outer folding line 6 or 6' is attached to the corresponding bottom surface 5.
The top surface part 1 and the bottom surface part 5 are pasted to the parts other than the gusset, and in this way, the inner surfaces facing the upper and lower ends of the paper bag are pasted and sealed by a method such as hot melting. However, the side parts of the gusset portion are not adhered to each other. Therefore, the gusset can be fully expanded from its upper end to its lower end. Now, when the paper bag is attached to the vacuum cleaner main body (not shown) via the paperboard member 2 and the suction fan is rotated from the rear of the bottom part 5, the paper bag sucks air from the suction port 3. While doing so, expand the gusset part and inflate it sufficiently. Therefore, paper bags of substantially larger volume can be made using the same size of base paper.

Although the above-mentioned embodiment describes a paper bag made of one sheet of base paper, the present invention is not limited to this, and two sheets of base paper are used as the base paper.
It goes without saying that stacked sheets can also be used.

Since the present invention is constructed as described above, it is possible to provide a paper bag with a sufficiently expanded gusset portion at a low cost.

[Brief explanation of the drawing]

The drawing is a perspective view showing an embodiment of a paper bag according to the present invention. 1...Top part, 5...Bottom part, 4, 4', 6,
6'...Outside folding line, 7, 7'...Side part, 8,
8'...Inner folding line.

Claims (1)

[Scope of utility model registration request] Outer folding lines 4, 4' provided at both ends of the top surface part 1 provided with the intake port 3, and outer folding lines 6, provided at both ends of the bottom surface part 5 facing the top surface part.
6', and one inner folding line 8 provided on each of the left and right side surfaces 7, 7' connecting the top surface and the bottom surface.
In a dust collection paper bag for a vacuum cleaner equipped with gussets on the left and right sides consisting of 8', the upper and lower ends of the paper bag are adhesively sealed on the opposing inner surfaces, and the side surfaces of the gusset portions are adhesively sealed. A paper bag characterized by not being