JPH0111685Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a breast milk absorbing pad that absorbs excess milk produced by a breastfeeding woman outside of breastfeeding hours and prevents clothing from being soiled due to breast milk leakage.

Various conventional parts of this type are known, but all of them are made by laminating a water-absorbing material made of felt, absorbent paper, etc. and a waterproof material made of nylon, waterproof paper, synthetic resin film, etc. in a bonded or non-bonded manner. The structure is the basic structure.

However, such conventional products have the disadvantages of (1) insufficient breast milk absorption capacity, and (2) poor shape retention and plastic deformation due to external forces. (3) The cushioning properties were poor; (4) The nipples collapsed due to pressure on the nipples, making it difficult for infants to breastfeed. (5) Because the waterproof material and the breast milk absorbent were integrated, evaporated water vapor accumulated, causing stuffiness.

The object of the present invention is to provide a practically useful breast milk absorbing pad that eliminates the above-mentioned conventional drawbacks.

That is, the present invention consists of a film-free, water-absorbing soft polyurethane foam layer formed entirely into a bowl shape by pressure and heat molding, and a nipple insertion recess formed by providing a recess in the foam layer. an outer covering layer made of a knitted or woven fabric provided on the convex side of the foam layer; and a water-absorbent breast protection layer made of a knitted or woven fabric provided on the concave side of the foam layer. A breast milk absorbent body consisting of a thermocompression bonded part provided on the periphery of the shape, and two pieces of breathable and waterproof fabric are made into the same shape as the periphery of the breast milk absorbent body, and the periphery parts are sewn together. A breast milk absorbent cover comprising a breast milk absorbent cover having an opening for inserting a nipple in the center of one side of the fabric, and the breast milk absorbent is inserted into the breast milk absorbent cover. The main point is the absorption part.

Embodiments of the present invention will be described below based on the drawings.
The breast milk absorbent 1 of the present invention is composed of an outer covering layer 2, a water-absorbing soft polyurethane foam layer 3 without a film, and a breast protection layer 4 having water-absorbing properties. It is formed into a bowl shape. A concave portion 5 is provided in the water-absorbing soft polyurethane foam layer 3 having a bowl shape and having a film-free shape. On the convex side of the foam layer 3, an outer covering layer 2 is laminated along the convex shape. A breast protection layer 4 having water absorbency is laminated on the concave side of the foam layer 3 along the concave shape and the concave portion 5, and the concave portion 5 forms a nipple insertion recess 6 on the inner surface of the breast milk absorbent body 1. It is formed. Furthermore, a thermocompression bonding part 7 is provided on the periphery of the bowl shape, and this thermocompression bonding part 7 is formed by particularly strongly thermocompression bonding the periphery during pressurization and heating molding. The compression ratio is the highest in the crimp portion 7, and the density is the highest. Therefore, the thermocompression bonding part 7 has a large bonding force and has properties and functions that can prevent the breast milk absorbent body 1 from being deformed.

In the thermocompression bonding part 7, the layers 2, 3, and 4 need to be bonded to each other, but in areas other than the thermocompression bonding part 7, the layers may or may not be bonded to each other. It's okay. When bonding the above-mentioned layers to each other, an adhesive may be used between the layers.

The breast milk absorbent cover 8 of the present invention is composed of a front side fabric 9 and a back side fabric 10, and the peripheral part 11 is sewn by lock stitching. The cover 8 has a peripheral shape that follows the peripheral edge of the breast milk absorbent body 1, and a size that allows the breast milk absorbent body 1 to be inserted therein. Furthermore, a nipple insertion hole 12 is formed in the center of the back side fabric 10, and a peripheral area 13 of the nipple insertion hole is sewn by interlock stitching. The breast milk absorbent cover 8 may have a planar structure, but it is even better if it has a three-dimensional structure that follows the bowl-shaped structure of the breast milk absorber 1.

The material of the outer covering layer 2 constituting the breast milk absorbent body 1 is preferably one that has excellent heat resistance and appropriate elongation properties since it is subjected to pressure and heat molding, and more preferably one that has excellent hygroscopicity. As the material for the outer cover layer 2, for example, a fabric made by knitting or weaving fibers such as cotton, polyester, 6.6 nylon, and cotton cloth, etc. can be used.

A membrane-free water-absorbing soft polyurethane foam is a foam that has been made membrane-free by removing the cell membrane of the foam.It does not have water absorption as a physical property of the resin, but the cell membrane has been removed and it is almost just resin ribs. It has water absorption ability due to the form cell structure with high porosity formed from the foam.

Any known method may be used to remove the cell membrane of the foam. For example, when foam is foamed into a slab by the one-shot method, special silicone may be used as a foam stabilizer when mixing raw materials, or a specific film removing agent may be used. Alternatively, the foam can be obtained by post-treatment such as explosive removal with combustion gas or hydrolysis with alkali.

Since the amount of breast milk absorbed can be adjusted by adjusting the thickness of the water-absorbing soft polyurethane foam layer 3, the thickness should be determined in consideration of the generally required amount of breast milk absorption. Usually, the thickness can be 5 to 50 mm, but in consideration of the amount of breast milk absorbed, pressure and heat molding time, cushioning properties, etc., the thickness is preferably about 15 to 30 mm. The amount of breast milk absorbed can also be adjusted by adjusting the volume of the foam layer 3. The breast protection layer 4 is intended to prevent discomfort due to the foam layer 3 directly adhering to the nipples and breasts, and to provide a soft feel to improve the tactility during use. The protective layer 4 can be made of the same material as the outer covering layer 2. in this case,
The combination of materials for both layers 4 and 2 may be the same or different.

As described above, at least in the thermocompression bonding section 7, the layers 2, 3, and 4 must be bonded to each other, and an adhesive is required. As the adhesive, it is preferable to use an adhesive that has heat resistance that does not deteriorate due to heat during molding and has hot melt adhesive properties. Examples of the adhesive used include acrylic, acrylonitrile butadiene, urethane, and vinyl acetate adhesives.

The materials of the front fabric 9 and the back fabric 10 that constitute the breast milk absorbent cover 8 have breathability and waterproof performance.
It is preferable to use one with appropriate extensibility. The materials for the fabrics 9 and 10 include, for example, fabrics knitted or woven with fibers such as 6.6 nylon or polyester, which are treated to be water repellent and given waterproof performance, or breathable urethane resin films or footwear. It is possible to use a sheet that is made waterproof by tossing a knitted or woven fabric with a base resin film or the like.

When using the patch of this invention, please refer to the third
As shown in the figure, the breast milk absorbent 1 is inserted into the breast milk absorbent cover 8 through the nipple 26 and the opening 12 for insertion, and is used by combining the two.

In manufacturing the breast milk absorbent 1 of the present invention, a mold as shown in FIG. 4 is used. The mold consists of an upper mold 17 formed by a plurality of convex molds 16 having convex curved surfaces 14 and protrusions 15 arranged side by side, and a lower mold 20 formed by a plurality of concave molds 19 having concave curved surfaces 18 arranged side by side,
A flat portion 21 is formed between the convex molds 16, 16, and a raised portion 22 is formed on the periphery of the concave mold 19. The upper mold 17 or the lower mold 20 is provided so as to be movable up and down, and is configured to be heated to an arbitrary thermoforming temperature by an appropriate heating means.

A laminated sheet 23 consisting of an outer covering layer 2, a film-free water-absorbing soft polyurethane foam layer 3, and a breast protection layer 4 that are laminated in a bonded or non-bonded manner is placed below with the breast protection layer 4 facing upward. The laminated sheet 23 is placed on a mold 20, and the upper mold 17 is lowered or the lower mold 20 is raised to form the laminated sheet 23 under pressure and heat. During this molding, the sheet 23 is compressed and heated at the same time, so that the sheet 23 is shaped into a desired breast milk absorbent shape. A nipple insertion recess 6 is formed in the portion of the convex mold 16 that is thermally compressed by the projection 15 .
Furthermore, by providing the raised portion 22, the flat portion 21
Since the vertical distance between and the raised portion 22 becomes smaller, this portion is particularly strongly compressed, and as a result,
A thermocompression bonding part 7 with a large bonding force is formed on the peripheral edge of the breast milk absorbent body. After molding, the plurality of breast milk absorbent bodies 1 are punched out along their peripheral edges by a punching method to obtain breast milk absorbent bodies 1.

The thickness of the foam layer 3 may be configured to gradually become thinner from the center of the breast milk absorbent body 1 to the periphery of the breast milk absorbent body, excluding the recessed portion 5, as shown in FIG. Alternatively, the entire foam layer 3 except for the recessed portion 5 may be configured to have a substantially uniform thickness without any variation in thickness.

FIG. 5 shows another embodiment of the present invention in which a bulge 24 is provided inside the peripheral edge of the breast milk absorber 1 and a bulge 25 is provided on the end wall of the nipple insertion recess 6. In order to achieve this structure, during pressure and heat molding, the shape of the bulging portion 24 is a convex shape with a concave notch of a corresponding shape on the periphery, and the shape of the bulging portion 25 is cylindrical. A convex type having a protrusion 15 of a shape may be used. Since the bulging portion 24 exhibits cushioning properties, it feels good on the breast during use and has the advantage of eliminating the feeling of a foreign body. The bulging portion 25 is also intended to achieve the same effect as the bulging portion 24, and even if the tip of the nipple comes into contact with the end wall of the recess 6, it will feel soft and will not hurt the nipple. has advantages.

As explained above, the film-free water-absorbing soft polyurethane foam of the present invention does not result from the water-absorbing action derived from the physical properties of the resin, but from the water-absorbing action originating from the cellular structure of the highly interconnected foam from which the cell membrane has been removed. It has excellent water absorption ability and does not lose its shape even if it absorbs a large amount of breast milk.
Even when the undergarment was washed, the undergarment did not lose its shape due to water absorption, the water drained easily after washing, and drying was significantly faster. Furthermore, the foam has excellent cushioning properties unique to foam, and protects the nipples and breasts well. In this way, since the foam has the functions of both a breast milk absorbent material and a cushion material, there is no need to separately provide a cushion material in addition to the water absorbent material as in the past.

This invention has a polyurethane foam layer formed into a bowl shape by pressure and heat molding, so the part as a whole is strong and has excellent shape retention, and is difficult to deform even when external force is applied, and even if deformed, it has elasticity. Since it is deformed, it easily returns to its original shape. Therefore, according to the present invention, there is no need to wear a shape-retaining pad for adjusting the shape of the bust in addition to the breast milk-absorbing pad, and both functions can be achieved.

Since the breast milk absorbent cover of the present invention is made of breathable and waterproof knitted or woven fabric,
It has the advantage that air and water vapor can freely circulate, and the water vapor that evaporated inside the pad does not accumulate inside the pad and cause stuffiness.

In this invention, the breast milk absorber and the breast milk absorbent cover are constructed separately, so compared to the conventional breast milk absorbing pad with a waterproof film layer arrangement, in addition to eliminating the stuffiness phenomenon mentioned above, it is also easier to dry after washing. is excellent. Since the breast milk absorbent cover of this invention is waterproof,
It is possible to reliably prevent the breast milk absorbed by the breast milk absorber from leaking to the outside.

Since the present invention has a nipple insertion recess, it is possible to prevent the nipple from collapsing, and it has the effect of making it easier to breastfeed the infant during breastfeeding. Furthermore, since the recess is formed by providing a recess in the polyurethane foam layer, there is no need to provide a spacer-like member for forming the recess, which has the advantage of simplifying the structure. The breast milk absorber of the present invention is provided with a thermocompression bonding part on the periphery of the cup shape, so that the periphery has a large bonding force, so that deformation of the breast pad can be prevented even after long-term use. The breast milk absorbent of the present invention is obtained by pressure and heat molding, so it is easy to manufacture and suitable for mass production.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention. Figure 1 is a longitudinal cross-sectional view of the breast milk absorbent of the present invention, Figure 2 is a longitudinal cross-sectional view of the breast milk absorbent cover of the present invention, and Figure 3 is a view of the inside of the breast milk absorbent cover. Fig. 4 is a longitudinal cross-sectional view showing the mold used for manufacturing the breast milk absorber of the present invention, and Fig. 5 shows another embodiment of the breast milk absorber of the present invention. FIG. DESCRIPTION OF SYMBOLS 1... Breast milk absorber, 2... Outer covering layer, 3... Film-free water-absorbing soft polyurethane foam layer, 4...
... Breast protection layer, 5 ... Recessed part, 6 ... Nipple insertion recess, 7 ... Heat compression bonding part, 8 ... Breast milk absorbent cover,
9...Front side fabric, 10...Back side fabric, 12...Nipple insertion hole.

Claims (1)

[Scope of utility model registration request] A film-free, water-absorbing soft polyurethane foam layer formed entirely into a bowl shape by pressure and heat molding, a nipple insertion recess formed by providing a recess in the foam layer, and the foam. An outer covering layer made of a knitted or woven fabric provided on the convex side of the layer, a water-absorbent breast protection layer made of a knitted fabric provided on the concave side of the foam layer, and a thermocompression bonded part provided on the bowl-shaped periphery. A breast milk absorber consisting of a breast milk absorbent and two pieces of breathable and waterproof fabric are made into the same shape as the periphery of the breast milk absorber, the periphery is sewn, and a nipple is attached to the center of one of the fabrics. 1. A pad for absorbing excess breast milk, comprising a breast milk absorbent cover provided with an opening for insertion, and the breast milk absorbent is inserted into the breast milk absorbent cover.