JP3274010B2 - Dust collecting paper bag for vacuum cleaner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flatly folded dust bag for a vacuum cleaner.

[0002]

2. Description of the Related Art A conventional dust-collecting paper bag for a vacuum cleaner is generally formed by laminating both ends of a rectangular base paper, folding the base paper into a tube so that a gusset is formed on a side surface, and opening both ends of the cylindrical base paper. It is repeatedly bonded and sealed several times, and has an intake port on the top surface.

Although the gusset has only one fold, generally two or three folds are formed. In this case, the folds are all provided at the same position.

[0004]

However, if the gusset folds are provided at the same position when the gussets are folded in multiple steps, the above-mentioned gussets are required to be folded and sealed at both ends. Gazette fold lines overlap vertically.

For this reason, the folded portions at both ends of the tubular body become extremely thick, and the folded portions at both ends of the tubular body between the gusset folded portion and the folded portion have a thick portion and a thin portion, such as a thin portion. There is a problem that the adhesion of the portions becomes incomplete, pinholes are formed, and the sealing performance is deteriorated.

In the present invention, a plurality of gusset folds are provided so as to be displaced from each other in consideration of the above-mentioned problem of the conventional dust-collecting paper bag for a vacuum cleaner. An object of the present invention is to provide a dust-collecting paper bag that can be completely sealed without being thickened.

[0007]

As a means for solving the above-mentioned problems, the present invention is directed to a base paper having both ends joined together and folded into a tubular shape so that a plurality of gusset folds are formed on a side surface. The outer fold position of the gusset between the uppermost and lowermost folds in a dust-collecting paper bag in which both ends of the shape of the base paper are folded back and adhered and sealed, and an intake port is provided on the upper surface A dust collecting paper bag for a vacuum cleaner characterized in that the gusset is provided at a position shifted from the fold of the uppermost stage and the lowermost stage, and the inner fold position of the gusset is provided at a position shifted from each other. It is.

[0008]

The dust collecting paper bag of the present invention having the above-described structure is used by being mounted in a vacuum cleaner main body in the same manner as the conventional one. However, when making this dust-collecting paper bag, since the gusset fold positions are provided shifted from each other in the width direction, even if the end of the cylindrical body is folded back and sealed even when the end is folded, Because of the smooth overlap, the folded back is completely bonded.

Further, as described above, since the gusset fold positions are provided to be shifted from each other in the width direction, the thickness of the dust collecting bag is not bulky even if the number of gusset folds is plural, and If the positions of the joints where the both end edges are bonded are shifted from the gusset fold position, the thickness of the dust collecting bag can be further reduced.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external view showing a schematic structure of a dust-collecting paper bag for an electric vacuum cleaner in the course of manufacturing, and FIG. 2 is a cross-sectional view taken along the line BB. As shown in the figure, the dust-collecting paper bag of this embodiment is formed by attaching left and right cut ends of a base paper to form a cylindrical body. 1 is an upper surface, 2 is a lower surface, and BB
Both ends of the base paper are stuck together at appropriate positions on the lower surface 2 at the joints 3 so as to be seen in the direction of arrows. In the center of the upper surface portion 1, a well-known paperboard member 4 is integrally adhered to the periphery of the air inlet 5 of the upper surface portion 1 which is overlapped with the air inlet provided in the paperboard member, so as to be inside the main body for the vacuum cleaner. It is formed so that it can be attached to.

The formed tubular body is provided with gussets 6 on the left and right sides, and is folded flat. 7, 7 are end portions of the cylindrical body. In this case, as shown in the cross-sectional view taken along the line B-B, the gusset 6 is folded in two steps inside and one step outside. The feature is that it is provided shifted. In this case, the outer fold position of the gusset 6 between the uppermost and lowermost folds, which are the side edges of the upper surface portion 1 and the lower surface portion 2, is provided at a position shifted from the uppermost and lowermost folds. Have been.

The gussets 6 are provided so as to be shifted so that the inner fold positions thereof are shifted from each other. The inside fold position is provided so as to be shifted from the position of the joint 3 of the tubular body. After folding the staggered position like this,
The ends 7, 7 of the cylindrical body are further folded, bonded by a method such as hot melt and sealed (see FIG. 3).

The dust-collecting paper bag of the embodiment configured as described above is used by being mounted in a vacuum cleaner main body in the same manner as a conventional general bag. However, the dust-collecting paper bag of this embodiment is
As described above, since the gusset fold positions are provided so as to be shifted from each other, the outer and inner folds of the gusset are uppermost and lower when folding and bonding the end portion 7 of the tubular body, Alternatively, they do not overlap each other up and down, so that the end portions are folded as flat as possible, and the attachment of the folded portions is performed smoothly and completely.

FIG. 4 is a cross-sectional view of another embodiment corresponding to the line BB in the above embodiment. This embodiment is different from the above embodiment in that the deep valleys and the shallow valleys formed by the gusset folds are located opposite to the above embodiment with respect to the upper surface 1 and the lower surface 2 of the paper bag. Thus, the folding positions of the gussets need only be shifted from each other. The other points are the same as in the first embodiment.

In the above embodiment, the number of folding steps of the gusset is two inside, but it is obvious that three or more folding steps may be inside (see FIG. 5). . Although the base paper of the paper bag is shown as a single sheet for convenience, it is needless to say that a double base paper or the like may be used.

[0016]

As described above in detail, the dust-collecting paper bag of the present invention is provided by displacing a plurality of folding positions on the outside and inside of the gusset with each other so as to avoid overlapping of the folds of the gusset. It is said that the tube itself and the end of the tube body are not thickened, but are joined in a flat and smooth state and are completely adhered to each other, making the product thinner, saving packaging bags and reducing storage space. Benefits are obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a dust-collecting paper bag of an embodiment during manufacture.

FIG. 2 is a cross-sectional view as viewed from the arrow BB in the above.

FIG. 3 is a perspective view showing a completed state of the embodiment.

FIG. 4 is a cross-sectional view corresponding to an arrow BB of a modified example.

FIG. 5 is a cross-sectional view corresponding to arrow BB of another modified example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper surface part 2 Lower surface part 3 Joining part 4 Paperboard member 5 Inlet 6 Gazette 7 End

Continuation of the front page (56) References JP-A-2-302236 (JP, A) Jikken Sho 61-32611 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47L 9 / 14

Claims (2)

(57) [Claims] 1. A both edges of the base paper is bonded, double the side
In a dust-collecting paper bag that is folded into a tubular shape so that several steps of gusset folds are formed, both ends of the tubular base paper are folded back and sealed, and an intake port is provided on the upper surface, The outer fold position of the gusset between the uppermost and lowermost folds is provided at a position shifted from the uppermost and lowermost folds, and the inner fold positions of the gusset are shifted from each other. A dust-collecting paper bag for a vacuum cleaner, which is provided at a position. 2. The dust-collecting paper bag for an electric vacuum cleaner according to claim 1, wherein the inside fold position of the gusset is provided at a position shifted from the position of the joining portion of the tubular cardboard.