Sealing bag with chuck

Abstract

A sealing bag with a chuck capable of surely enhancing an easy-to-unseal property of the sealing bag without increasing the size of the chuck and an entire bag and without causing dissolution, flatness and the like at projected parts at the time of bag-making. The sealing bag comprises a bag body 1 having an opening part 1a at one end, a chuck 10 having a pair of tapes 11a and 11b thermally fused near the opening part of the bag body 1 and opposed to each other along the opening part 1a and a pair of female and male clamping devices 12a and 12b formed on the opposed faces of the pair of tapes 11 and disengageably clamped along the opening part 1a to seal the bag body 1, and a pair of projected parts 20a, 20b formed in a pair of projected lines at the bag body opening side end edge part of the pair of tapes 11a and 11b and integrally projected to the inner and outer surface sides of the bag body 1a, wherein the pair of tapes 11 are thermally fused to the inner face of the bag body, whereby the projected parts 20a and 20b are positioned on the inside of the opening edge part of the bag body 1 and the projected parts 20a, 20b are not thermally fused to the inner face of the bag body 1.

Description

TECHNICAL FIELD [0001] The present invention relates to a sealing bag with a chuck which is provided with a clamping type chuck (fastener) for opening, closing or sealing the bag near an opening of a bag body formed of a synthetic resin film or the like. [0002] More particularly, the present invention relates to a sealing bag with a chuck suitable for a small-sized sealing bag for use in storing any of medical supplies, foods, miscellaneous goods and the like, wherein projected parts which integrally project from both inner and outer faces of a bag body are disposed on tape end edge parts of the chuck and the projected parts are disposed on the inside of the bag body not exposed via the opening without being fused on a bag side, so that an easy-to-unseal property of the bag can be surely enhanced without enlarging the chuck or the entire bag and without causing fusion, flatness of the like of the projected parts at the time of bag-making. BACKGROUND ART [0003] In general, sealing ba...

AI Technical Summary

Benefits of technology

[0020] According to the sealing bag with the chuck of the present invention constituted as described above, the projected parts are disposed as means for preventing fingers from slipping at the time of opening / closing of the bag along the end edge part of the chuck which opens / closes and seals the bag body. The projected parts are disposed inside the opening part of the bag body together with the chuck. When the chuck and the projected parts are positioned inside the bag body in this manner, the chuck or the nonslip structure does not largely project to the outside of the bag, and the chuck and the entire bag can be miniaturized.

[0031] Moreover, the projected part is constituted to form a projection line having a circular sectional shape or a projection line having an angled sectional shape. In this manner, the sectional shape of the projected part according to the present invention is not especially limited as long as the projection line can integrally project to both the inner face side and the outer face side of the bag body. For example, a projection line having a circular sectional shape or a projection line having a quadrangular or rhombic sectional shape can be constituted. That is, the projected part according to the present invention can selectively set to have a sectional shape optimum for the sealing bag to which the present invention is applied in accordance with the size of the sealing bag or the chuck, a clamping force of the chuck, and the like. When the projected parts are disposed, it is possible to realize the sealing bag with the chuck, which is superior in versatility and expansibility.

Problems solved by technology

Additionally, in the sealing bag with the chuck, since the bag body is formed by a thin film of polypropylene or the like, the opening edge part of the bag held in the fingers in opening the chuck easily slips.

Especially when finger tips are wet or a weak person tries to open the bag, the fingers slip, and the chuck cannot be opened well.

Therefore, with the conventional sealing bag whose grasped parts easily slip, an operation for unsealing the bag is difficult.

The bag has a problem in ease of using or opening especially as a bag for medical supplies utilized by infants and old people or a bag for foods or miscellaneous goods used by housewives at home.

However, in the sealing bags provided with the finger nonslip structures which have heretofore been proposed, as shown in FIGS. 11 and 12, any chuck is continuously fused outwards from the opening side edge part of the bag body, the outer edges of the chuck are further extended outwards as the clamping parts, and therefore there has been a problem that the entire bag including the chuck is enlarged.

Therefore, at the time of the opening of the chuck, the contents spill out, or foreign matters are easily mixed into the bag.

This has been a serious problem especially in a small-sized sealing bag used for household or medical treatment, in which small or fine matters, liquids and the like are stored.

Furthermore, in the sealing bag having the chuck formed on the opening-side endmost part thereof, a problem also occurs that a bag opening part cannot be sealed (top sealed).

Additionally, in the sealing bag on which the chuck is disposed outside the opening part of the bag and the clamping part for nonslip is formed, the bag cannot be sealed on the opening side, and the bag cannot be used especially in the sealing bag for the distribution.

As pointed out in the Japanese Utility Model Application Laid-Open No. 5-76309, there has been a problem that the expanded parts strongly bite into finger tips, and finger tips become painful and numb.

On the other hand, in the structure in which the plurality of projections are separately formed on the opposite surfaces of the clamping parts as in the sealing bag shown in FIG. 12, there has been a problem that the finger's forces are scattered to the plurality of projections formed on different positions, and are not easily exerted.

However, when the chuck is simply disposed on the bag body inner face, and the projections are only formed, the projections can be projected only on the inner face side of the bag, and this cannot be always said to be sufficient as the means for preventing the fingers from slipping.

However, when the projections are simply lengthened, the projections easily fall at the time of manufacturing of the bags, the manufacturing becomes difficult.

Moreover, since the projections project long from the inside of the bag, the fingers are not easily inserted into the bag opening part, and additionally there has been a possibility that an opening / closing property of the bag is impaired.

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