JPH0845Y2 - Vacuum cleaner dust pack - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a dust pack for a vacuum cleaner. More specifically, the present invention relates to a dust pack that is attached to a vacuum cleaner for industrial use, household use, or the like and that stores collected dust.

[Prior Art] A conventional dust pack is a bag formed by sewing or adhering paper or non-woven fabric.

[Problems to be Solved by the Invention] Conventional paper dust packs have problems of low air permeability and high pressure loss.

Furthermore, as the amount of dust contained increases, the pressure loss increases significantly.

On the other hand, the dust pack made of a non-woven fabric can freely set the air permeability and the degree of pressure loss by selecting the fiber density, but there is a problem that sewing and bonding work are troublesome and the manufacturing cost is high.

The present invention allows the air permeability and the degree of pressure loss to be arbitrarily set according to the type of dust to be used,
Moreover, it is an object of the present invention to provide a dust pack for a vacuum cleaner whose manufacturing cost is extremely low.

[Means for Solving the Problems] A dust pack for a vacuum cleaner according to the present invention comprises a bag body having a collecting portion formed by heating and stretching at least a central portion of a sheet-shaped nonwoven fabric in which thermoplastic filaments are accumulated, What is claimed is: 1. A dust pack for a vacuum cleaner, comprising: a mounting flange adhered to the periphery of an opening provided in a bag, wherein the bag has two hemispherical shapes each made of the sheet-shaped nonwoven fabric. It is composed of a bag, the bag is composed of a relatively high fiber density annular flange portion and a relatively low fiber density hemispherical collecting portion continuous to the flange portion,
It is characterized in that the flange portions of the two bags are adhered to each other and the opening portion is formed at the bottom portion of one bag.

[Operation] Use the dust pack in the vacuum cleaner in the same way as the conventional one by using the mounting flange.

The hemispherical bag in the dust pack of the present invention uses a hemispherical male mold and a female mold to sandwich and hold the outer peripheral part of the non-woven fabric and heat-stretch the central part of the non-woven fabric in the radial direction. As a result, a flange portion with a relatively high fiber density is formed in the outer peripheral portion and a lace-shaped filtration surface is formed in the central portion.
A collection part having a relatively low fiber density is formed. Therefore, since the boundary line between the flange part and the collecting part is circular, and the collecting part has a hemispherical surface, the flange part and the collecting part are evenly stretched, so that the flange part In the portion, the wrinkle-like wrinkles are pressed down, and there is no gap in the bonding area between the flange portions, so that the flange portions are closely bonded.

Further, since the fibers are stretched in a mesh shape in the collecting portion of the dust pack, a gap is widened. Furthermore, since the fibers themselves are extremely thin, even if the gaps between the fibers are small, the ratio of the gaps per unit surface area of the collecting portion is extremely large. Therefore, even if dust is accumulated in the collection part, pressure loss is small and air permeability is high.

In addition, the breathability and the degree of pressure loss can be arbitrarily set by changing the basis weight and the degree of heat drawing of the sheet-shaped nonwoven fabric, and the sheet can be collected according to an arbitrary collection target. Moreover, it can be mass-produced because it can be easily manufactured with a mold. As a result, a disposable dust pack can be obtained.

[Embodiment] Next, a dust pack of the present invention will be described with reference to the drawings.

1 is a sectional view showing an embodiment of the dust pack of the present invention, FIG. 2 is a perspective view showing another embodiment of the dust pack of the present invention, and FIG. 3 is a perspective view of the dust pack shown in FIG. FIG. 4 is a sectional view showing an example of a manufacturing method, and FIG. 4 is a sectional view showing an example of how to use the dust pack of the present invention.

The dust pack (A) shown in FIG. 1 comprises a square mounting flange portion (1) made of paper and a spherical bag body (2). The bag (2) has two hemispherical bags (2a), (2
It can be obtained by adhering b) to each other at the flange (2c).

Each bag (2a), (2b) is a sheet-shaped non-woven fabric obtained by accumulating thermoplastic filaments having voids between the fibers, and the central part of the bag is heated and drawn into a hemispherical shape to collect part (3). It is manufactured by forming.

As the thermoplastic filament, one kind or a mixture of two or more kinds of synthetic fibers obtained from a thermoplastic resin is adopted. The fineness of the fiber is, for example, 1.0 to 5.0
Denier grade, especially 2.0 to 4.0 denier is used.

Such a thermoplastic filament has, for example, a unit weight of, for example, by a spun bond method or a melt blow method.
It is formed into a sheet-like non-woven fabric with a gap between fibers of 10 to 150 g / m ² , and especially 40 to 100 g / m ² .

Since the non-woven fabric thus formed has ductility and malleability under heating, it can be formed into hemispherical bags (2a) and (2b) by stretching the central part with a mold as shown in FIG. Molded.

That is, in FIG. 3, a sheet-shaped nonwoven fabric (10) punched into a predetermined shape such as a circle is placed on a male mold (11), and a female mold (12) descends in the direction of arrow (P). . At this time, the outer peripheral portion of the nonwoven fabric (10) is clamped and held by, for example, a crease retainer (14) so as not to be drawn into the female mold (12). Since the sandwiched and held portion is hardly stretched, it remains as a flange (4) having a high fiber density.

On the other hand, the central part of the non-woven fabric (10) is stretched in the radial direction as the female mold (12) descends to form a hemispherical collecting part (3). Thereby, in the collecting part (3), the voids between the fibers are expanded and the thickness is reduced to form a lace-shaped filtration surface. It is preferable that the collecting unit (3) after processing has a basis weight of about 10 to 50 g / m ² . The arrow (Q) in FIG. 3 indicates the cushion force for the wrinkle retainer (14), and (H1) and (H2) indicate the die heater. The heating temperature is preferably, for example, higher than the softening point of the fiber and higher than the softening point by 10 ° C.

Hemispherical bag (2a), (2
In b), the upper bag (2a) formed by punching out the opening (5) at the bottom and the lower bag (2b) as they are are integrated by adhering the respective flange portions (4),
It is configured as one spherical bag (2) bonded at the equator.

Further, the dust pack (A) to which the paper-made mounting flange (1) is adhered is completed on the periphery of the opening (5).

The dust pack (B) shown in FIG. 2 is a bag body (6) formed from a single sheet of non-woven fabric into a rectangular tube shape, and a flange portion (relatively high fiber density) left at the open end of the bag body ( 7) and a mounting flange (1) made of paper which is bonded to 7).

Compared to the dust pack (A) shown in FIG. 1, this one does not require a bonding step at the equator.

Dust packs (A), (B) constructed as above
Can be mounted by, for example, inserting the mounting flange (1) into the groove (21) of the suction port of the vacuum cleaner as shown in FIG. 4 from above.

If the mounting flange (1) has the same shape as the mounting flange of the conventional dust pack, the compatibility can be obtained and the mounting flange (1) can be used as it is in the conventional vacuum cleaner. It is also possible to prepare several kinds of fibers having the same shape but having different fiber densities of the collecting part (3) within the range of 10 to 50 g / m ² , and replace them according to the object to be cleaned. For example, if you are targeting fiber (cotton dust) dust such as in a barber shop or beauty salon, you can use about 10 g / m ² , and for spherical dust, 50 to 10 g / m ^2.
Preferably having from 0 g / m ^2, preferably about 100 to 150 g / m ² for further dust fine spherical quality.

[Advantages of the Invention] The dust pack of the present invention has a bag body composed of two hemispherical bags, and therefore, when the hemispherical bag is formed by heating and stretching, the bag is uniformly stretched, and the collecting portion. In, since the voids between the fibers spread in the radial direction and a uniform fiber density can be obtained, the degree of breathability and pressure loss can be arbitrarily set by changing the degree of basis weight of the nonwoven fabric or the degree of heat drawing, It is possible to collect dust of several microns or more according to an arbitrary collection target. In addition, since it can be easily manufactured by using a mold and mass production can be performed, the manufacturing cost can be extremely low. As a result, it can be disposable, and a dust pack containing dust can be easily processed.

[Brief description of drawings]

1 is a sectional view showing an embodiment of the dust pack of the present invention, FIG. 2 is a perspective view showing another embodiment of the dust pack of the present invention, and FIG. 3 is a perspective view of the dust pack shown in FIG. FIG. 4 is a sectional view showing an example of a manufacturing method, and FIG. 4 is a sectional view showing an example of a method of using the dust pack of the present invention. (Main symbols in the drawings) (A), (B): Dust pack (1): Mounting flange (3): Collection part (5): Opening part

Claims (1)

[Scope of utility model registration request] 1. A bag body having a collecting portion formed by heating and stretching at least a central portion of a sheet-shaped nonwoven fabric in which thermoplastic filaments are accumulated, and a bag body bonded to the periphery of an opening provided in the bag body. A dust pack for a vacuum cleaner comprising an attachment flange, wherein the bag body is composed of two hemispherical bags each made of the sheet-shaped nonwoven fabric, and the bag has a relatively high fiber density. Consisting of a high annular flange part and a relatively low fiber density hemispherical collecting part continuous to the flange part,
A dust pack for a vacuum cleaner, characterized in that the flange portions of two bags are adhered to each other and the opening is formed at the bottom of one bag.