Individual package of absorbent article

Abstract

An individual package of an absorbent article permits a base end of a tape to be bonded with sufficiently large bonding strength without complicating packaging process and increasing manufacturing cost. The absorbent article is wrapped by a package sheet having side edge portions and end edges, and one end edge is overlapped over the other end edge. The package sheet is sealed along the side edge portions, a base end of a tape is fixed on the surface of the package sheet located outside in an overlapping portion, and a free end of the tape extends across one end edge and is releasably adhered on the outer surface of the package sheet adjacent one end edge. The package sheet has a surface, on which the base end of the tape is fixed, the surface being smoothed by a smoothing process.

Description

[0001] 1. Field of the Invention[0002] The present invention relates to an individual package, in which an absorbent article, such as sanitary napkin, panty liner, sanitary tampon, incontinence pad, disposable diaper and so forth is individually packed.[0003] 2. Description of the Related Art[0004] For example, an absorbent article, such as sanitary napkin or the like, is individually packed into an individual package. Conventionally, a package sheet of the individual package is formed from a polyethylene film or the like. It is a typical structure that side portions of the package sheet are heat sealed in a condition wrapping the absorbent article.[0005] However, the package sheet formed from a resin film, such as polyethylene film and so forth may generate husky (or crinkly) noise upon handling due to friction with a packaging film upon opening the package and taking out the absorbent article. This is true even in the case where the individual package is taken out from a porch, is...

AI Technical Summary

Benefits of technology

[0017] When the smoothed region is formed at the position away from the bonded portion, softness of the package sheet of the non-woven fabric in the bonded portion can be maintained to maintain the force required for opening the package by peeling the package sheet in the bonded portion small to make husky or crinkly noise upon opening the individual package small.

[0019] As set forth above, by pressurizing or by pressurizing and heating, the package sheet can be easily smoothed.

[0021] By coating or laminating the resin film on the outer surface of the package sheet of fibrous structure, the surface of the package sheet can be easily smoothed.

[0024] By pressuring the tape and the package sheet after bonding them, the adhering strength of the tape can be increased.

[0026] Since the portion of the package sheet is smoothed in the portion, on which the base end of the tape is adhered, the tape and the package sheet is firmly adhered with sufficiently large adhering force. Accordingly, in the condition where the same adhesive is applied to both ends of the tape, the base end can be firmly adhered on the package sheet, and the free end of the tape can be releasably adhered on the adjacent package sheet. By applying the same adhesive on both ends of the tape, the tape can be easily manufactured at low cost.

Problems solved by technology

However, the package sheet formed from a resin film, such as polyethylene film and so forth may generate husky (or crinkly) noise upon handling due to friction with a packaging film upon opening the package and taking out the absorbent article.

On the other hand, the resin films are firmly bonded by heat seal to cause difficulty in opening the package for large anti-peeling resistance upon peeling the heat sealed portion.

Furthermore, since the large force is required in opening the package, high husky or crinkly noise can be generated.

As a result, uncomfortable feeling may be caused for the fear if unpacking of the sanitary napkin or the like can be perceived by surrounding people.

On the other hand, the package sheet formed from polyethylene film is not always preferably in terms of product form due to stiff external appearance of the individual package.

Furthermore, since the polyethylene film is heat sealed, gas-tightness of the sealed individual package becomes excessively high to cause bursting of the package sheet at the heat sealed portion when large external force is applied during carrying.

In case of individual package of the absorbent article employing the package sheet of non-woven fabric, husky noise to be generated by such package sheet upon unpacking is small.

Furthermore, since bonding area of the heat sealed portion is substantially small, peeling sound upon unpacking the heat sealed portion becomes small.

Accordingly, once the entire tape is peeled and removed, inconvenience is encountered in handling upon unpacking the individual package.

However, if the base end of the tape is not firmly fixed on the package sheet, when the free end of the tape is pulled for firmly wrapping the used sanitary napkin by the package sheet, the base end may be peeled off the outer surface of the package sheet to cause difficulty in wrapping the used sanitary napkin for disposal.

However, using two kinds of adhesives in bonding the tape on the package sheet or varying application amounts at different positions inherently make packaging process complicate to increase manufacturing cost.

Furthermore, the adhesive used for fixing the base end of the tape may run out toward the position of the package sheet on which the free end of the tape is bonded, to fix the free end of the tape with excessively large bonding strength on the package sheet to cause difficulty in unpacking.

On the other hand, when the basis weight is in excess of 100 g / m.sup.2, the package sheet 10 becomes excessively thick to be excessively stiff entirely in the condition of the individual package 1.

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