Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Reexamination Certificate
1999-01-25
2001-05-22
Johnstone, Adrienne C. (Department: 1733)
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
C156S289000, C156S443000, C156S459000
Reexamination Certificate
active
06234229
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a sanitary napkin product and its manufacturing equipment.
FIG. 13
(I) is a plan view of a conventional sanitary napkin product
201
;
FIG. 13
(II), a plan view of the same of which the wrapping film
2
is open.
FIG. 14
is an exploded view of the sanitary napkin product
201
.
As shown in
FIGS. 13 and 14
, the conventional sanitary napkin product
201
consists essentially of a wrapping film
2
, a peeling-off paper strip
3
A, a sanitary napkin
1
, and peeling-off paper strips
3
B and
3
C, each put on another in the order of the description, the sanitary napkin
1
wrapped in the wrapping film
2
.
The numeral
7
indicates a hold-down tape strip.
FIG. 15
shows the back of the conventional sanitary napkin
1
. As shown in
FIG. 15
, a wing is formed on each side of the body of the sanitary napkin
1
. The leakage of a sanitary napkin with wings is smaller than that of a sanitary napkin without wing. Therefore, consumers prefer sanitary napkins with wings.
On the back of the sanitary napkin
1
, adhesive
8
a
is applied to the center portion extending in the direction of length of the sanitary napkin
1
, and adhesive
8
b
and
8
b
is applied to both the right and left wings. The adhesive
8
a
,
8
b
and
8
b
adheres to underwear to prevent the slip of the sanitary napkin
1
while it is used.
As shown in
FIG. 14
, adhesive
2
a
and
2
a
is applied to the center portions of the inside of the wrapping film
2
. The adhesive
2
a
and
2
a
of the wrapping film
2
is overlaid with the peeling-off paper strip
3
A. Namely, the peeling-off paper strip
3
A is affixed to the wrapping film
2
. Then, the sanitary napkin
1
with its wings folded is put on the peeling-off paper strip
3
A. The peeling-off paper strip
3
A prevents the sanitary napkin
1
from sticking to the wrapping film
2
and thereby reserves the adhesion of the adhesive
8
a.
The peeling-off paper strip
3
B is inserted between the right and left wings, both folded and overlapping each other, of the sanitary napkin
1
to preserve the adhesion of the adhesive
8
b
of the wing positioned under the other. The adhesive
8
b
of the wing positioned on the other is overlaid with the peeling-off paper
3
C, which prevents the sanitary napkin
1
from sticking to the wrapping film
2
and thereby preserves the adhesion of the adhesive
8
b.
The wrapping film
2
together with the sanitary napkin
1
is folded in three along the dot-dash lines shown in
FIG. 13
(II), each of the upper and lower hems of the wrapping film
2
making three layers of itself. Then, as shown in
FIG. 13
(I), the upper and lower hems are heat-sealed and the hold-down tape strip
7
is affixed to the wrapping film
2
to produce the sanitary napkin product
201
, the wrapping film
2
constituting the wrapper of the sanitary napkin
1
.
To use the sanitary napkin
1
wrapped in the wrapping film
2
, the hold-down tape strip
7
is removed, the wrapping film
2
of the sanitary napkin product
201
is opened, and the sanitary napkin
1
is peeled off the peeling-off paper strip
3
A on the wrapping film
2
. Then, the peeling-off paper strips
3
C and
3
B are peeled off the adhesive
8
b
and
8
b
. As mentioned earlier, the adhesion of the adhesive
8
a
,
8
b
and
8
b
of the sanitary napkin
1
is preserved. Therefore, the adhesive
8
a
,
8
b
and
8
b
prevent the sanitary napkin
1
from slipping while it is used.
In case of the conventional sanitary napkin product
201
, the peeling-off paper strips
3
A,
3
B and
3
C are necessary to preserve the adhesion of the adhesive
8
a
,
8
b
and
8
b
until the sanitary napkin
1
is used. However, when the sanitary napkin
1
is used, the peeling-off paper strips
3
A,
3
B and
3
C as well as the wrapping film
2
are junked. Using the peeling-off paper strips
3
A,
3
B and
3
C in the sanitary napkin product
201
increases the quantity of wastes and the material cost of the sanitary napkin product
201
.
Besides, devices to overlay the adhesive
8
a
,
8
b
and
8
b
with the peeling-off paper strips
3
A,
3
B and
3
C are required, which makes the manufacturing equipment of the sanitary napkin product
201
complex and large.
In accordance with the above, an object of the present invention is to provide a sanitary napkin product which requires no peeling-off paper strips, reducing the quantity of wastes and its material cost, and does not slip while it is used. Another object of the present invention is to provide a manufacturing equipment of the sanitary napkin product.
SUMMARY OF THE INVENTION
According to the first aspect of the present invention, there is provided a sanitary napkin product which is a sanitary napkin with wings on both sides of its body wrapped entirely in a wrapping film. The inside of the wrapping film is coated with silicone, and a coat of slip-preventing adhesive which comes easily off silicone coats is formed between the silicone-coated side of the wrapping film and the back of the sanitary napkin.
According to the second aspect of the present invention, there is provided a sanitary napkin product according to the first aspect wherein (i) both the longitudinal end parts of the body of the sanitary napkin are folded onto the front side of the sanitary napkin, (ii) the wings on both sides of the sanitary napkin are folded onto the front side of the sanitary napkin, and (iii) the slip-preventing adhesive is applied to the backs of the middle part and longitudinal end parts of the body, and the backs of the wings, of the sanitary napkin.
According to the third aspect of the present invention, there is provided a sanitary-napkin-product manufacturing equipment which comprises (i) a manufacturing machine to manufacture a sanitary napkin with wings and (ii) a wrapping machine to apply slip-preventing adhesive, which comes easily off silicone coats, to the back of the sanitary napkin and wrap the sanitary napkin in a wrapping film, of which the inside is coated with silicone, to produce a sanitary napkin product.
According to the fourth aspect of the present invention, there is provided a sanitary-napkin-product manufacturing equipment according to the third aspect of which the manufacturing machine, wherein a continuous facing sheet fed from its roll, a continuous absorbent sheet fed from its roll, and a continuous lining sheet fed from its roll run respectively, comprises (i) an absorbent-body cutout unit which cuts out absorbent bodies one after another at intervals in the running direction from the running absorbent sheet, (ii) a lining-sheet-adhesive applying unit which applies adhesive to the running lining sheet continuously in the running direction, (iii) a facing-sheet-adhesive applying unit which applies adhesive to the running facing sheet continuously in the running direction, (iv) a sandwiching unit which puts the absorbent bodies sequentially between the running facing sheet and the running lining sheet and puts them together to make a sanitary napkin sheet, (v) a heat-sealing unit which seals with heat the portion inside and along the outline of the portion including the absorbent body which becomes the sanitary napkin, and (vi) a sanitary-napkin cutout unit which cuts out pieces of the sanitary napkin one after another at intervals from the sanitary napkin sheet holding the absorbent bodies inside.
According to the fifth aspect of the present invention, there is provided a sanitary-napkin-product manufacturing equipment according to the fourth aspect of which the absorbent-body cutout unit comprises paired anvil roller and die-cut roller. The die-cut roller has cutter blades on its periphery to cut out absorbent bodies, and the absorbent sheet runs into between the paired anvil roller and die-cut roller for absorbent bodies to be cut out one after another.
According to the sixth aspect of the present invention, there is provided a sanitary-napkin-product manufacturing equipment according to the fourth or fifth aspect of which the heat-sealing unit comprises paired an
Arent Fox Kintner & Plotkin & Kahn, PLLC
Johnstone Adrienne C.
Tao Machine Industry, Inc.
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