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At Shirohato, we carefully consider every
area of our masks from materials selection to the sewing process, so
as to produce order-made masks that meet our customers's needs from planning
and development through to the manufacturing stages.
Our knowledge and techniques, as well as our ability to gather market
information, have been built up over the past sixty years, and are second
to none.
You can trust Shirohato Co., Ltd. for the planning and development of
all your clothing accessories (fabric products) and masks!
Our connections with fabric manufacturers go back many
years, and so we are always the first to know of developments in the fabric
industry and are able to incorporate these into our mask planning and development
at an early stage.
Shirohato's plant is fully automatic and includes the
latest in computerized sewing machines, allowing the mass production of
high-quality sewn products.
Please see here for details of our facilities.
Masks sell particularly well during the winter, when
colds and influenza abound, and during the spring, when pollen counts are
high. For this reason, it is important to match the two to three months
during which masks are selling fast by having a large amount of stock.
We at Shirohato ensures that we always have sufficient stock to sell.
Masks are subject to trends in materials, design, and
function. Shirohato understands consumer requirements, and we are constantly
improving our masks to facilitate meeting these needs.
Shirohato Co., Ltd. holds the following patents and utility
models
Patent:
Hygiene mask
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| Application No. |
Patent Application No. Hei 8-159404 |
| Date filed |
20 June 1996 |
| Publication No. |
Patent Gazette No. Hei 10-5360 |
| Publication date |
13 January 1998 |
| Patent filed by |
Shirohata Co., Ltd. |
| Inventor |
Hiroo Yoko |
| Name of invention |
Hygienic mask |
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Problems to Be Solved
by the Invention
To prevent air being sucked into or blown out of the mask without passing
through the mask itself, and to avoid damaging the filter function of the
hygienic mask. |
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Means of Solving the Problems
On a hygienic mask which is fitted with ear strings to the right
and left sides of the body of the mask itself, the top part of the mask
is folded in and downwards, and then folded back inwards and upwards. A
flexible wire is fitted to the top, folded part of the mask, which opens
the center of the foremost edge of the mask and closely supports the mask
from the nose area to the cheek area. In addition, the lower part of the
mask is folded upwards and inwards, and the center of the folded part is
opened, and the mask is fitted and supported from below the jaw. |
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Patent:
Method for manufacturing a hygienic mask
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| Application No. |
Patent application No. 2001-190927 |
| Date filed |
25 June 2001 |
| Publication No. |
Patent publication 2003-742 |
| Publication date |
7 January 2003 |
| Patent filed by |
Shirohato Co., Ltd. |
| Inventor |
Shiro Yokoi |
| Name of invention |
Method for manufacturing a hygienic mask |
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Problems to Be Solved
by the Invention
To provide a method for manufacturing a hygienic mask in a simple and swift
manner, and which allows an increase in the number of breathable sheets
incorporated into the mask's structure, as well as the use of breathable
sheets with fold marks, which have been conventionally difficult to use.
The method should allow machining of the masks without damaging the fixed
position of the base of the folds. |
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Means of Solving the Problems
A plurality of breathable sheets are sewn together along a plurality of
fold lines before the folding process is implemented on the mask, facilitating
a total sewing process in regard to a mask that has been designed to
fit easily to the curves and protrusions on the face, which requires
multiple folds and is comprised of multiple layers of breathable sheets,
which ?trap? harmful substances such as pollen, fine dust, and the like. |
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Utility
model: Hygienic mask
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| Application No. |
2002-2677 |
| Date filed |
10 May 2002 |
| Publication No. |
Registered utility model No. 3089858 |
| Publication date |
28 August 2002 |
| Patent filed by |
Shirohato Co., Ltd. |
| Inventor |
Shiro Yokoi |
| Name of invention |
Hygienic mask |
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Problems to Be Solved by the Invention
To improve the general fit of a mask while utilizing a simplified method
of manufacturing that minimizes increased processing costs, and at the
same time improve the effectiveness of the mask in eliminating pollen
and other microscopic particles. |
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Means of Solving the Problems
On a hygienic mask made from woven and non-woven fabrics, (1) on the body
of the mask, the top part of the mask is folded in and downwards, and
then folded back inwards and upwards to form the mask shape. When in
use, the center of the foremost edge of the aforementioned folded part
is opened, and the mask is closely fitted to the nose area to the cheek
area. (2) In addition, the lower part of the mask contains a filter pocket,
which can be fitted with a superior filter material that eliminates pollen
and other microscopic particles. |
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Utility
model: Hygienic mask
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| Application No. |
2003-271363 |
| Date filed |
24 September 2003 |
| Publication No. |
Registered utility model No. 3100600 |
| Publication date |
14 January 2004 |
| Patent filed by |
Shirohato Co., Ltd. |
| Inventor |
Shiro Yokoi |
| Name of invention |
Hygienic mask |
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Problems to Be Solved by the Invention
To provide a hygienic mask which has an improved fit to the face, based
on a mask manufactured from woven and non-woven fabrics, with ear strings
fitted to the right and left edges of the mask. |
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Means of Solving the Problems
On a mask made from woven and non-woven fabrics which is large enough to
cover both the mouth and nostrils, and which is provided with two ear
strings attached at the left and right edges 1a which are of a specified
height, the mask is made in such a way as to be long enough to reach
to the area adjacent to the ear when worn. When worn, the upper part
of the mask is fitted to the protrusion of the nose by the use of plastic-deforming
synthetic resin, which is applied to the fabric material as a coating
to maintain the band plate shape 4, and is affixed to the aforementioned
upper part. |
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