JPH09135716A - Satchel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide excellent air permeability and to prevent a user's sweating as far as possible by using a cushiony fabric in the parts, such as handles, shoulder belts, back straps and back plates, which come into contact with the user's body by directing its fabric layer toward the outside surface. SOLUTION: The fabric layer 12 formed by non-flatly yarn 12a consisting of hydrophobic chemical fibers 12b having a noncircular shape impregnated or kneaded with an antimicrobial agent is laminated on an open-cellular foamed material layer 11 consisting of a synthetic resin, by which the cushiony fabric 10 is composed. Such cushiony fabric 10 is used in the parts, such as handles, shoulder belts, back straps and back plates, which come into contact with the user's body by directing its fabric layer 12 toward the outside surface. As a result, the excellent air permeability is obtd. and the user's sweating is prevented as far as possible. The sweat is absorbed and the fabric dries rapidly and, therefore, the generation of fungi and bacterial is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag, and more particularly to a bag that prevents a portion of a user's body that comes into contact with the bag from easily sweating.

[0002]

2. Description of the Related Art Bags are made of natural leather as a representative raw material, but other various materials such as cloth, metal plate, synthetic resin are used. However, the raw materials for these bags are usually highly airtight, and the part that comes into contact with the user's body during use may promote sweating of the user.

For example, when a handbag is carried in a hand, sweat is generated in the hand, and the material of the handle is deteriorated by the sweat, so that the handle is first damaged.

Further, since the school bag used by children who are active in activity has a wide contact surface with the back, they often sweat all over their backs, and many requests for improvement have been received.

Further, if sweat adheres to the bag, mold and bacteria often grow and grow in a humid environment / atmosphere such as Japan. If mold or bacteria develop and attach to human hands, it is unsanitary, and mold or bacteria may cause a bad odor, and a used bag has a unique odor and is comfortable to use. It has been pointed out that this is not possible.

[0005]

Therefore, the present invention provides a material that is highly breathable and suppresses sweating of the user as much as possible, absorbs sweat and dries quickly, and suppresses the development of mold and bacteria. It is an object to provide a bag that can be used and comfortably used.

[0006]

In order to achieve the above-mentioned object, the present invention provides an open-cell foam material layer 11 of synthetic resin,
The cushioning fabric 10 is formed by laminating a fabric layer 12 formed by non-planarly knitting a yarn 12a made of hydrophobic chemical fibers 12b, 12b, 12b ... , This cushioning fabric 10,
A technical means is used in which the cloth layer 12 is used with its outer surface facing a user's body such as a handle, a shoulder belt, a shoulder strap, and a back plate.

Further, in the invention of "Claim 2", a hydrophobic chemical fiber 12 having a non-circular cross section is obtained by impregnating or kneading an antibacterial agent in an open-cell foam material layer 11 of a synthetic resin in which the antibacterial agent is kneaded.
A fabric layer 12 formed by non-planarly knitting a yarn 12a made of b, 12b, 12b, ... Is laminated to form a cushioning fabric 10. The cushioning fabric 10 is provided with a handle,
A technical means is used in which the fabric layer 12 is used with its outer surface facing a user's body such as a shoulder belt, a shoulder strap, and a back plate.

"Antibacterial action": Therefore, a fabric layer 12 made of chemical fiber yarn impregnated or kneaded with an antibacterial agent, and an open-cell foam material layer 1 of synthetic resin impregnated or kneaded with an antibacterial agent.
Of course, 1 exhibits an antibacterial action.

"Breathability ensuring function": Further, since the open-cell foam material layer 11 is open-cell, it is of course that it has air-permeability. By providing the open-cell foam material layer 11 with a predetermined thickness, the function of forming an air-permeable layer with a predetermined thickness is exhibited.

"Tank and radiator action": Further, it has an action of increasing moisture absorption capacity by increasing surface area due to air bubbles and diffusing water to facilitate drying.

"Pump action": Furthermore, when an external force is applied to the open-cell foam material layer 11 to expand or contract (crush or release the collapse), air is blown into the open-cell foam material layer 11. Is forced to flow through, and the moisture absorbed by the air flow is discharged or dried.

"Evaporation heat cooling action": By the drying of the above water, the heat of vaporization is taken to exhibit a cooling action.

"Capillary action": Further, since the fabric 12 uses hydrophobic fibers having a non-circular cross section, a large number of minute gaps are formed between the fibers as compared with the circular cross section fibers, and the water absorption is improved by the capillary phenomenon. , Has the effect of sucking sweat. Since it is a hydrophobic fiber, it has a water-absorbing power but a small water-holding power, so that the capillary phenomenon does not hinder the drying.

"Surface feel improving action": When the fabric 12 having a capillary action is knitted, not only a flat fabric such as a woven fabric but also a non-planar fabric having irregularities on the surface can be formed and absorbs moisture. Even if it does, the surface side of the cloth 12 exhibits an action of preventing stickiness.

[0015]

Next, embodiments of the present invention will be described. In the figure, 10 is a cushioning cloth which is the main part of the present invention. This cushioning material 10 is a synthetic resin open-cell foam material layer 11 in which an antibacterial agent is impregnated or kneaded and hydrophobic chemical fibers 12b, 12b, 12b having a non-circular cross section.
The fabric layer 12 formed by non-planarly knitting the yarn 12a made of ... Is laminated.

The open-cell foam material layer 11 may be formed by foaming a synthetic resin such as urethane by a conventional technique.
In order to make it open-celled, it is only necessary to adjust the degree of foaming and the like so that most of the cells are in a communicating state. At present, it seems that open-celled and closed-celled are mixed and are not clearly distinguished. That is, in the foamed synthetic resin, one having a large proportion of those in which each cell is closed independently is closed-celled (closed-celled). Cellularar), which has a large proportion of those in which the air bubbles are in communication with each other, and those with high air permeability are open cells (open cellular)
It is called.

The open-cell foam material layer 11 may be produced separately from the fabric layer 12 described below and laminated by an appropriate means, but normally, the foam of the open-cell foam material layer 11 is foamed. The steps are performed after the dough layers 12 are laminated in advance (overlapped and foamed).

Also, in the open-cell foam material layer 11,
It is preferable to knead the antibacterial agent in the same manner as the hydrophobic chemical fiber 12b described later. Needless to say, conventionally known antibacterial agents may be used.

The fabric layer 12 has hydrophobic chemical fibers 12b, 12 impregnated or kneaded with an antibacterial agent and having a non-circular cross section.
The yarn 12a made of b, 12b, ... Is knitted in a non-planar manner. This antibacterial agent is kneaded into the raw material of the chemical fiber or formed into the yarn 12a or the dough layer 12, and then these antibacterial agents are formed. It may be dipped in the liquid and impregnated, but recently, as an antibacterial agent, a synthetic resin raw material has been developed that can continue its antibacterial function for a very long time, so this kneading method should be adopted. Is desirable.

Further, the hydrophobic chemical fiber 1 having a non-circular cross section as described above.
As 2b, those having a substantially cocoon-shaped cross section (polygonal cross section or C-shaped cross section) as shown in FIG. 4 can be used. Many small gaps are formed in the gap, and this gap facilitates absorption of water (sweat) by a capillary phenomenon.

Further, the hydrophobic chemical fiber 1 is formed on the fabric layer 12.
When 2b, 12b, 12b, ... Are used, the water retention capacity is smaller than that of the hydrophilic material, so that the capillary phenomenon does not hinder the drying, and the water absorption capacity does not impede the drying.

Further, the hydrophobic chemical fiber 12 has a non-circular cross section.
When the yarn 12a made of b, 12b, 12b, ... Is knitted in a non-planar manner, that is, the yarn 12a is knitted to form a knit fabric, large irregularities can be set on the surface relatively easily as compared with a woven fabric. This is because large stretchability can be easily set, and also large breathability can be easily set.

Hydrophobic chemical fibers 12b, 12 having a non-circular cross section
The non-planar knitting of the yarn 12a made of b, 12b ... Is performed by a knitting method called circular knitting in the present embodiment, and a tubular fabric is knitted. This means that the difference L1 between the heights of the irregularities on the surface of the fabric layer 12 is large and is three-dimensional, as shown in FIG. 3, rather than being non-planar. Similarly, as shown in FIG. 3, the knitted fabric has holes H of appropriate size,
It is possible to arrange a large number of H, H ...
Can be said to be a recess of zero height, and the height difference between the uneven portion is L2.
But it will be shown. In addition, "FIG. 3" is a schematic illustration, and the hatched upper portion of the fabric layer 12 does not show the shape of the yarn 12a.
It shows a shape made by knitting.

The reason why the large unevenness is formed on the surface by non-planar knitting is to make the surface non-sticky even if it is touched with a hand or the like. In order to prevent the surface from becoming sticky, it is a known technique that it is effective to form the surface with small projections so that the total area of the fibers is small. In addition, elasticity and breathability can be set relatively freely depending on the knitting method, and breathability is used to accelerate drying and prevent stuffiness. 11 movements are not restricted.

A cloth layer 12 is formed on the open-cell foam material layer 11.
In order to form the cushioning fabric 10 by stacking the above, as described above, it is easy to perform the foaming process of the open-cell foam material layer 11 after previously laminating the fabric layer 12, and the manufacturing process is simple. It is desirable because it does not alienate breathability.

Although the fabric layer 12 may be used alone, that is, without being laminated with the open-cell foam material layer 11, as a material for a bag, the fabric layer 1 is a knitted fabric.
No. 2 is too large in elasticity by itself and is not suitable as a constituent member of the bag, and since the fabric layer 12 is not three-dimensional, it is not possible to secure a breathable layer having a desired thickness. An open-cell foam material layer 11 is laminated.

That is, when laminated with the open-cell foam material layer 11, the elasticity itself does not change so much, but it does not become wrinkled and is easy to use in a bag. Further, the open-cell foam material layer 11 has low tensile strength and frictional strength, but these are supplemented by the fabric layer 12, and sufficient strength for use in a bag can be secured.

Further, the open-cell foam material layer 11 ensures the thickness of the breathable layer, and the open-cell foam material layer 11
And the fabric layer 12 mutually function to improve water absorption,
As described in the explanation of the above-mentioned action, it is possible to accelerate the drying and the like.

Further, according to the present invention, the cushioning cloth 10 is used in a portion such as a handle, a shoulder belt, a shoulder strap, and a back plate which comes into contact with the user's body, with the cloth layer 12 facing outward. .

The example shown in FIG. 1 is used for the back plate 100 of the school bag. The cushion material is overlaid on the substrate, the outer fabric is overlaid thereon, and the sewing thread 101 that reaches the substrate from the appropriate place to the substrate is provided.
Although the cushion material is squeezed and sewn in the same manner as the conventional one, the cushioning material 10 is used for the outer material.

Since the backpack has a wide contact surface with the back, the backpack often sweats all over the back. In order to suppress this publication as much as possible, recently, the back plate 100 is not a flat surface but has an uneven surface, and a relatively wide groove through which air flows is provided on the back. Specifically, the portion where the cushion material is crushed and sewn by the sewing thread 101 shown in FIG. 1 is lower than the other portions, and this portion (the portion along the sewing thread 101) becomes a groove that does not contact the back. However, even though this method has some effects, it is still unsatisfactory, and there is a contradictory request that if the contact surface with the back is wide as much as possible, it is easy to lend, and if the contact area is narrow, the back feels uncomfortable. To do.

On the other hand, in the present invention, a considerable amount of sweat on the back is absorbed by the fabric layer 12 and the open-cell foam material layer 11 of the back plate 100, and the fabric layer 12 and the open-cell foam material layer are also absorbed. Since 11 is breathable, even if the contact area with the back is large, the back is hard to get stuffy.

When walking with a backpack on his back,
The school bag vibrates as "dancing. The back plate 1
The cushioning material 10 is crushed due to a change in the load of the contact surface of 00 with the back surface, and the crushing force is released. Prevents stuffiness of the back from being exhaled and inhaled.
Further, when the fabric layer 12 is moistened by discharging or sucking air in the open-cell foam layer 11, the high-humidity air is guided into the open-cell foam layer 11 and the fabric layer 12
The water-absorbing power of the water is improved, and the discharged air accelerates the drying.

Next, the example shown in FIG. 2 is used for the backpack belt of the school bag, and the cushioning cloth 10 is attached to the portion of the backpack belt 200 that abuts from the back to the shoulder and the upper part of the backpack. In this backpack belt 200, an upper end portion 201 is folded back, a back ring mounting metal fitting (not shown) provided in the center of the back plate of the school bag is wound, and the folded back two folded portions are connected by tacking or the like, and a lower portion 202 Is the locking holes 203, 20
3, 203 ... Are provided so that they can be locked and connected to the buckle of the lower belt of the backpack not shown.

Although not shown in the drawing, the cushioning cloth 1 with the cloth layer 12 facing the outer surface is also provided at a portion such as a handle or shoulder belt which comes into contact with the user's body.
It is good to attach 0.

[0036]

EFFECTS OF THE INVENTION As described above, the present invention can provide a bag that is breathable with a predetermined thickness and does not get wet with sweat.

Since the dough layer 12 has a large amount of strong aquatic,
Even if you sweat, it can absorb water and provide a bag that does not feel sticky.

Since the fabric layer 12 is treated with antibacterial treatment, it is possible to improve the growth of mold and bacteria and to provide a bag that is sanitary and odorless for many years.

[Brief description of the drawings]

FIG. 1 is a plan view of a backpack back plate showing an embodiment of the present invention.

FIG. 2 is a plan view of a backpack belt of a school bag.

FIG. 3 is an enlarged cross-sectional view of the cloth used in the present invention.

FIG. 4 is an enlarged cross-sectional view of the yarn forming the fabric used in the present invention.

[Explanation of symbols]

 10 Cushioning Fabric 11 Open Cell Foam Layer 12 Fabric Layer 12a Yarn 12b Hydrophobic Chemical Fiber

Claims (2)

[Claims] 1. A synthetic resin open-cell foam material layer (11).
In addition, a fabric layer (12) formed by non-planarly knitting threads (12a) made of hydrophobic chemical fibers (12b, 12b, 12b ...) With a non-circular cross section impregnated or kneaded with an antibacterial agent.
To form a cushioning cloth (10), and the cushioning cloth (10) is formed on a portion of the cushioning cloth (10) that comes into contact with the user's body such as a handle, shoulder belt, back strap, or back plate. A bag with 12) facing outwards. 2. A hydrophobic chemical fiber (12b, 12b, 12b ...) Having a non-circular cross-section obtained by impregnating or kneading an antibacterial agent into an open-cell foam material layer (11) of a synthetic resin kneaded with an antibacterial agent.
The cushioning material (10) is formed by laminating a material layer (12) formed by non-planarly knitting a thread (12a) made of (). The cushioning material (10) is provided with a handle and a shoulder. A bag having a fabric layer (12) facing the outer surface of a part such as a belt, a shoulder strap, or a back plate that comes into contact with the user's body.