JP4360689B2 - Breast milk pad and method for producing the same - Google Patents

Description

The present invention relates to an improvement of a breast milk pad and a method for producing the same for a breastfeeding mother to interpose between an underwear such as a brassiere and a breast.

Conventionally, such a breast milk pad is used as shown in FIG. 5, for example.
In the figure, inside the cups 3 and 3 of the brassiere 2, breast milk pads 1 and 1 each having a substantially circular dome shape are interposed one by one.

  Such breast milk pads 1 and 1 are formed in a circular dome shape as shown in FIG. 6 which is a front view and FIG. 7 which is a side view, and are configured by laminating a plurality of flexible materials in the thickness direction. Has been. That is, the breast milk pad 1 arrange | positions a surface material on the inner surface which contacts a user's skin directly, arrange | positions an absorber next, and a liquid oozes out from an absorber at least on the outer side, and it may stain clothes. The waterproof material is laminated so that there is no.

  In this case, as the waterproof material, for example, polyethylene laminated paper obtained by laminating a plurality of polyethylene materials is used so that it has waterproof performance and can be thermoformed in the heating deformation process described later.

  Further, an adhesive part 4 to which an adhesive or the like is applied is provided at a predetermined position on the surface side of the waterproof material, and the adhesive part 4 is attached to the inside of the cup 3 of the brassiere 2 as shown in FIG. Use with fixing. Thereby, it is used so that underwear and breast milk pad 1 may not shift.

By the way, such a breast milk pad 1 needs to be formed in a dome shape as described above so that it can be used in close contact with the front surface (not shown) of the user's breast.
In order to manufacture the breast milk pad 1 in such a shape, the conventional method is as shown in FIG.

In FIG. 8, after each material used as the main body of the breast milk pad 1 is laminated | stacked as mentioned above, it arrange | positions on the female type | mold 5 which has a concave inner surface. Next, the male mold 6 having a dome-shaped convex surface as shown is lowered and pressed by the male mold 6 and / or the female mold 5 while being heated to, for example, about 130 degrees Celsius.
Thereby, the main body of the heated breast milk pad 1 is hardened after the polyethylene laminated paper as the waterproof material is thermally deformed, and is formed in a dome shape along the inner surface of the female mold 5.

Thus, since it is necessary to apply high heat and deform into a dome shape in the manufacturing process, for example, the waterproof material of the above-described breast milk pad 1 uses a heat-deformable material such as polyethylene laminated paper as described above. It was.
For this reason, the breast milk pad 1 which is a product has a relatively hard texture after heat deformation as a whole, and as a product that is in direct contact with the user's skin, the touch felt on the skin is not necessarily good. .

  In this respect, the breast milk pad 1 has a circular shape by softening the surface material (a material that comes into direct contact with the user's skin) and applying special processing to the periphery of the seal portion between the surface material and the waterproof material. In some products, various considerations are made so that the edges of the pad do not give an unpleasant stimulus. However, even if such a partial improvement is made, if the entire waterproof material is thermally deformed in the above-described process, it is inevitable that it will have a hard feel as a whole, and a product with a good feeling of use can be obtained. It was difficult.

  Further, even if the body of the breast pad 1 is thermally deformed as described above to form a dome shape, such processing has poor shape retention and becomes flat during use, and the front surface of the user's breast The shape becomes inconsistent with each other and the fitting property is deteriorated, resulting in misalignment. As a result, there is a problem that the breast milk leaks without being absorbed and stains the clothes.

The present invention has been made to solve such a problem, and provides a breast milk pad excellent in mold holding performance and a method for producing the same, avoiding a hard feeling due to thermal deformation of a waterproof material. The purpose is that.

In the first invention, the object is to absorb the liquid, the waterproof material disposed outside the absorber, the outer side of the absorber, the inner side of the waterproof material, The step of laminating a support member made of a material having a melting point lower than the melting point of the material constituting the waterproof material, the step of cutting the product material obtained by the laminating step into a circle, and the rounding in the cut process A molding step of heating the support member included in the product material at a temperature that does not cause thermal deformation of the waterproof material and higher than the melting point of the support member, and forming the dome shape. This is achieved by a method for producing a milk pad comprising:
Further, in the second invention, the above object is a breast milk pad that forms a main body by laminating an absorbent body that absorbs liquid and a waterproof material disposed outside the absorbent body. A support member made of a material having a melting point lower than the melting point of the material constituting the waterproof material, outside the absorbent body and inside the waterproof material, and the support member is made of the waterproof material This is achieved by a breast milk pad that is configured to be held in its entirety by being thermoformed into a dome shape at a temperature that does not cause thermal deformation and is higher than the melting point of the support member.

According to the configuration of the first or second invention, the support member is provided outside the absorber of the main body of the breast milk pad, for example, between the absorber and the waterproof material, and this support member constitutes the waterproof material. A material having a melting point lower than that of the material is used.
Therefore, in a state where the breast pad body is in a dome shape, the waterproof material is not thermally deformed.
In addition, if it is thermally deformed at a temperature higher than the melting point of the support member, the waterproof material will not
The shape of the dome is maintained by the deformation of the support member while maintaining a soft feel.

According to a third invention, in the configuration of the second invention, the absorber is surrounded by a tissue, and the support member is provided between the tissue and the waterproof material.

According to the structure of 3rd invention, when the said absorber contains the granular water absorption polymer, it can prevent effectively that this polymer is discharged | emitted outside.

According to a fourth invention, in the configuration of any one of the second and third inventions, a surface material is provided inside the absorber, and the peripheral portions of the waterproof material and the surface material are fixed to each other. The support member is arranged inside the range of the peripheral edge fixing portion.
According to the configuration of the fourth invention, it is possible to prevent the peripheral edge fixing portion from becoming harder than necessary.

As described above, according to the present invention, it is possible to provide a breast milk pad excellent in shape retention performance and a method for manufacturing the same while avoiding a hard feel due to thermal deformation of the waterproof material.

Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.
The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention is particularly limited in the following description. As long as there is no description of the effect, it is not restricted to these aspects.

FIG. 1 is a schematic perspective view showing an appearance of a breast milk pad according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view showing an internal structure of the breast milk pad shown in FIG.
With reference to these drawings, the structure of this embodiment will be described first.

As shown in FIG. 2, the breast milk pad 10 is located in front of the breast 47 when the user is wearing it. In this state, the waterproof material 11 is arranged on the outside (left side in FIG. 2) of the breast milk pad 10, and the surface material 13 is arranged on the inner surface side (right side in FIG. 2).
And the absorber 12 is arrange | positioned between the surface material 13 and the waterproof material 11, and these surface material 13, the waterproof material 11, and the absorber 12 are each formed in the substantially circular shape, and are piled up, and are laminated | stacked Thus, the main body 18 of the breast milk pad 10 is configured.

Although the waterproof material 11 does not allow liquid to pass through, it is preferable to select a material that is preferably flexible to some extent by allowing water vapor to pass therethrough and preventing moisture. Further, the waterproof material 11 is formed of a flexible material as compared with a conventionally used heat-deformable waterproof material. Moreover, the material which comprises the waterproof material 11 should just be provided with heat resistance and waterproofness, and may not be the material which can be thermally deformed conventionally.
Examples of such materials include polyethylene laminated paper, polyethylene laminated nonwoven fabric, and melt blown nonwoven fabric. Moreover, as shown in FIG. 1, the adhesion part 4 is provided in the surface of the waterproof material 11, and this is peeled off by sticking a release paper on it, as demonstrated in FIG. The adhesive portion 4 can be attached and fixed to the inside of the cup 3 of the brassiere 2.

  The surface material 13 is a member that is in direct contact with the skin of the user, and a material that is well permeable to moisture such as breast milk and has a good texture is selected. That is, since the surface material 13 directly touches the skin of the user, a material suitable for this is selected in consideration of the good touch without damaging the skin more than necessary. Preferably, a dry mesh sheet (a mesh sheet formed of polyethylene or the like) or a nonwoven fabric is used.

As the absorbent body 12, a material excellent in liquid absorbency is selected, and a fiber body, a laminated body, and a sheet body of pulp are used. Further, in the absorbent body 12, a polymer, which is a granular material made of a material having a function of retaining liquid as it is or semi-solidified or solidified, is used.
As such a material, for example, a water-absorbing polymer is suitable. For example, a polyacrylate copolymer, a hydrolyzate of starch-acrylonitrile graft copolymer, a starch-acrylic acid graft copolymer, polyvinyl Alcohol-acrylate copolymer, modified carboxymethyl cellulose and the like can be mentioned.
And the absorber 12 is wrapped in the tissue 15, as shown in FIG. This prevents the granular polymer and the like from leaking.

Further, a support member 19 is interposed between the absorbent body 12 constituting the main body 18 of the breast milk pad 10 and the waterproof material 11.
First, a material having a melting point lower than the melting point of the material constituting the waterproof material 11 is selected as the material constituting the support member 19. For example, such a heat-sealing fiber, for example, a fiber coated with polyethylene around a polyester axis, a nonwoven fabric using a polypropylene (melting point: about 90 to 120 degrees Celsius), a polyethylene film (melting point: about 90 degrees Celsius) Is suitable.
Here, the support member 19 may be provided outside the absorbent body 12 (left side in FIG. 2) and inside the waterproof material 11 in FIG. Therefore, for example, as shown in FIG. 2, when the tissue 15 or the like is interposed between the absorbent body 12 and the waterproof material 11, it is provided between the tissue 15 and the waterproof material 11 or between the absorbent body 12. Can do.
Moreover, it is preferable to provide the supporting member 19 in the range inside the periphery fixing | fixed part 18a (after-mentioned) shown in FIG.1 and FIG.2. Accordingly, it is possible to prevent the support member 19 from reaching the peripheral edge fixing portion 18a and giving a harder feel than necessary to this portion.

Thereby, only the support member 19 can be thermally deformed by heating without thermally deforming the waterproof material 11 in the heat deformation step described later.
In the present embodiment, the supporting member 19 is disposed between the entire surface of the tissue 15 covering the surface of the absorbent body 12 and the back surface of the waterproof material 11 in a process described later.
Alternatively, the support member 19 may be applied within a range in which the breast pad main body 18 can be held by the mold. For this reason, the support member 19 may be arranged radially around the apex (see FIG. 2) of the breast milk pad main body 18 or vertically and horizontally May be.

FIG. 3 is a schematic explanatory view showing a manufacturing process of the breast milk pad 10.
In the production line 20, the product material is conveyed leftward in the figure by a conveying means 21 such as a conveyor belt.
In step 22 in the previous stage of product manufacture, the tissue 15 is sent from the first tissue supply means 25 to the conveying means 21 in an expanded state.

Pulp is sprayed onto the expanded tissue 15. This pulp is sent from the pulp supply means 23 to the pulverizing means 24, and the pulp finely pulverized by the pulverizing means 24 is transferred onto the conveying means 21. The tissue 15 is sprayed on the surface.
Next, the polymer is sprayed from the polymer supply means 26 onto the pulp on the tissue 15. In this way, the absorbent body 12 is formed on the tissue 15.

Next, the second tissue supply means 27 supplies another piece of tissue 15 and puts it on the absorber 12. Thereby, the absorber 12 is surrounded by the tissue.
Next, the product material consisting of the absorbent body 12 and the tissue 15 that wraps the absorbent body 12 that is sent in a long continuous state is provided on one surface of the tissue 15 (corresponding to the surface facing the waterproof material 11 in FIG. 2). Then, the support member 19 is supplied. The support member supply means 31 is configured by winding a material of a support member such as the above-described non-woven fabric using heat-bonding fibers in a roll shape. Therefore, as the product material is fed, the material of the support member can be unwound and placed on one surface of the tissue 15.
Next, the product material consisting of the absorbent body and the support member is cut into individual product sizes in the cutting step 28 and further sent by the conveying means 21.

  Next, for example, the nonwoven fabric as the surface material 13 is supplied to the individually cut product material by, for example, the nonwoven fabric supply means 29, and at the same time, the waterproof material supply means 32 is waterproofed on the surface opposite to the nonwoven fabric. Material 11 is supplied. Thereby, the waterproof material 11 and the surface material 13 are laminated | stacked on the surface and back surface of the absorber 12 wrapped with the tissue 15. FIG.

As a result, the hot melt adhesive is applied to the one surface of the tissue 15 that wraps the absorbent body 12 and the back surface of the waterproof material 11, and is sent to the heat sealing step 33. Here, only the outer peripheral part (the part 18a in FIGS. 1 and 2) of the circular product material is fixed by heating and pressure bonding to form a peripheral fixing part, which is sent to the next cutting step. In the cutting step 34, all product materials are stacked and cut so as to form a circular product material corresponding to each product.
The peripheral edge fixing portion 18a may be fixed with an adhesive without using heat sealing.

The product material after the product cutting that has finished the previous step 22 is sent to the molding step 35.
The molding process 35 is performed by a molding die 41 as shown in FIG. The molding die 41 has substantially the same configuration as that described with reference to FIG. 8, and includes a female die 45 having a concave inner surface and a male die 46 having a dome-like convex surface. The concave surface of the female mold 45 and the convex surface of the male mold 46 correspond to the dome shape of the breast milk pad 10, and the product material that has finished the previous step 22 is placed on the female mold 45 with the waterproof material 11 facing down. Is done.

Then, as shown, the male mold 46 is lowered to press the product material against the concave inner surface of the female mold 45 to hold the product material in a dome shape. At the same time, heat is applied through the heating means 47 through the female mold 45 and / or the male mold 46.
In this case, the heat applied by the heating means 47 is set to a temperature lower than the melting point of the material of the waterproof material 11. Specifically, for example, when polyethylene laminate paper, polyethylene laminate nonwoven fabric, melt blown nonwoven fabric, or the like is selected as the material of the waterproof material 11, the temperature is set lower than the melting point of the selected material. The temperature is, for example, about 100 to 120 degrees Celsius for a non-woven fabric using heat-sealing fibers as the support member 19, and about 90 degrees Celsius when a polyethylene film is used.
Thus, the support member 19 is deformed into a concave shape inside the product material, so that the whole breast milk pad 10 is formed into a dome shape and completed.

The configuration of the embodiment of the breast milk pad of the present invention is as described above, and the body 18 of the breast milk pad 10 is heated while being held in a predetermined dome shape in the mold 41 of FIG. Since the support member 19 is formed into a predetermined dome shape, it is possible to obtain a product excellent in fit without being easily deformed after being worn by the user.
In addition, unlike the prior art, a process of thermally deforming at a temperature higher than the melting point of the waterproof material 11 is not employed. For this reason, unlike the conventional case, the waterproof material 11 is not cured by undergoing the thermal deformation step, and the material itself can be maintained in a relatively flexible state.
Therefore, especially the peripheral edge 18a of the breast milk pad 10 of FIG. 1 becomes hard, and a high-quality product with good touch can be provided without giving unpleasant stimulation to the user's skin.

The present invention is not limited to the above-described embodiment.
For example, a cushion material may be accommodated inside the main body 18.
Moreover, the waterproof material 11, the surface material 13, and the absorber 12 can select various materials other than the material of the above-mentioned embodiment description.
Moreover, you may select and combine each component of each above-mentioned embodiment arbitrarily.

1 is a schematic perspective view of an embodiment of a breast milk pad according to the present invention. It is a schematic sectional drawing in the state which mounted | wore with the breast milk pad of FIG. It is the schematic for demonstrating the manufacturing process of the breast milk pad of FIG. It is a figure which shows an example of the shaping | molding process at the time of manufacturing the breast milk pad of FIG. It is explanatory drawing which shows the use condition of the conventional breast milk pad. It is a front view of the breast milk pad of FIG. It is a side view of the breast milk pad of FIG. It is a schematic explanatory drawing which shows the shaping | molding method of the breast milk pad of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Breast milk pad, 11 ... Waterproof material, 12 ... Absorber, 13 ... Surface material, 15
... Tissue, 19 ... Support members

Claims (3)

An absorbent that absorbs the liquid, a waterproof material disposed outside the absorbent body, and a melting point lower than the melting point of the material constituting the waterproof material, outside the absorbent body and inside the waterproof material. Laminating a support member made of a material provided;
Cutting the product material obtained by the lamination step into a circle;
With respect to the product material circularized in the cutting process, with respect to the support member included in the product material, at a temperature that does not cause thermal deformation of the waterproof material and is higher than the melting point of the support member,
A method for producing a breast milk pad, comprising: a heating step to form a dome shape. A breast milk pad that forms a body by laminating an absorbent body that absorbs liquid, a waterproof material disposed outside the absorbent body, and a liquid-permeable surface material disposed inside the absorbent body. ,
A support member made of a material having a melting point lower than the melting point of the material constituting the waterproof material, outside the absorbent body of the main body, inside the waterproof material;
The waterproof material and the surface material are fixed to each other with a peripheral edge, and the support member is disposed on the inner side, avoiding the range of the peripheral fixed part,
Said support member, the extent the waterproof material is not thermally deformed, and at a temperature higher than the melting point of the support member, by being thermoformed, while being adapted to form holding the entire dome, the peripheral edge The breast milk pad , wherein the fixing portion is configured such that the waterproof material of the peripheral edge fixing portion is not heat-sealed to the peripheral edge portion of the surface material . The breast milk pad according to claim 2, wherein the absorbent body is surrounded by a tissue, and the support member is provided between the tissue and the waterproof material.

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