JP4369835B2 - mat - Google Patents

Description

  The present invention relates to a mat such as a foot-wiping mat placed on the floor surface of a dressing room such as a bathroom or a pool.

A mat such as a foot-wiping mat laid on the floor surface of a dressing room such as a bathroom or a pool is made of, for example, a non-woven fabric and has water absorption so as not to wet the floor surface under the mat (see Patent Document 1). .
JP 2000-70106 A

  However, since the nonwoven fabric fibers forming the conventional mat generally have a circular cross section, the frictional force against the wet sole is small. As a result, there was a problem that the water on the sole of the foot could not be scraped off efficiently, and the user might slip his / her foot.

  Furthermore, the conventional water-absorbing mat has a problem that when the number of users is large, the drying is delayed and the whole becomes wet, and the subsequent users may not be able to avoid discomfort during use.

  The present invention was made in order to solve such a problem, and the nonwoven fabric can be efficiently scraped off the water on the sole of the foot by being made of fibers having protrusions along the longitudinal direction thereof. It is another object of the present invention to provide a mat that can prevent the user from slipping his / her foot, and can prevent the user from feeling uncomfortable even when there are many users.

  Another object of the present invention is to provide a mat that can further prevent the user from feeling uncomfortable at the time of use by providing a water retaining layer on the back surface of the nonwoven fabric even when there are many users.

  Another object of the present invention is to provide a mat that can further prevent a user from slipping a foot by providing a non-slip layer on the back side of the nonwoven fabric.

  Another object of the present invention is to allow the nonwoven fabric and the water retention layer to be easily fused by each of the nonwoven fabric and the water retention layer being fused together with polyester as the main component and the water retention layer further comprising acrylic as the major component. It is possible to provide a mat that can further improve the water retention capacity of the water retention layer.

  Still another object of the present invention is to provide a non-slip layer comprising a non-woven fabric, a water retention layer, and a non-slip layer that are fused together, each of the nonwoven fabric and the water retention layer comprising polyester as a main component, and the anti-slip layer comprising polypropylene as a main component. By applying an adhesive synthetic resin to the back surface of the fabric, the non-woven fabric, the water retaining layer and the anti-slip layer can be easily fused, and further the adhesive force of the anti-slip layer to the floor surface can be improved. It is to provide a mat that can.

The mat according to the present invention is a mat using a nonwoven fabric, and includes a water retaining layer that retains water that has permeated the nonwoven fabric on the back surface of the nonwoven fabric, and the back surface of the water retaining layer has a slip that prevents slippage with respect to the floor surface. It comprises a stop layer, the nonwoven fabric is made of fibers having a ridge along its longitudinal direction, the surface of the nonwoven fabric, a plurality of brushed rows spaced form tare is, the nonwoven fabric mainly composed of polyester The water retention layer is mainly composed of polyester and acrylic, and the anti-slip layer is formed by applying an adhesive synthetic resin to the back surface of the nonwoven sheet mainly composed of polypropylene, and the nonwoven fabric and the water retention layer. wherein a slip layer, Yes and fusing peripheral edge portions and a central portion, fused portion of the central portion is characterized that you have to form a groove with.

In the present invention, for example, like a general foot wipe mat, it is used by being laid on the floor surface of a dressing room such as a bathroom or a pool. The mat of the present invention uses a non-woven fabric, and the non-woven fabric is made of a fiber having a protrusion (for example, a sharp strip) along the longitudinal direction. That is, the fibers forming the nonwoven fabric are not circular cross-section fibers but irregular cross-section fibers having protrusions (for example, sharp portions) in the cross section. For this reason, the fiber which forms a nonwoven fabric, and by extension, a nonwoven fabric has a large frictional force with respect to the sole of a wet foot. Moreover, the nonwoven fabric formed with the irregular-shaped cross-section fiber having the protrusions has a higher sharpness than the non-woven fabric formed with the circular cross-section fiber. Furthermore, since the nonwoven fabric is porous, it has high water permeability and air permeability from the front side to the back side. In addition, when the irregular cross-section fiber has a plurality of ridge portions, the ridge portions are spaced apart from each other at circumferential positions of the irregular cross-section fibers.
Furthermore, a plurality of raised rows are separated from each other on the surface of the nonwoven fabric.

Furthermore, the mat of the present invention includes a water retaining layer that retains water that has permeated into the nonwoven fabric, for example, in close contact with the nonwoven fabric on the back surface. In this case, the water retaining layer and the nonwoven fabric are joined by sewing, bonding, or the like. In the mat of the present invention, since the water retaining layer retains water that has penetrated into the nonwoven fabric, the nonwoven fabric does not become wet, and water does not move from the nonwoven fabric to the floor surface to wet the floor surface.

Furthermore, when the mat of the present invention is laid on the floor surface, the non-slip layer that prevents slipping against the floor surface is adhered to the back surface side of the nonwoven fabric, for example, the back surface of the nonwoven fabric, or the back surface of the nonwoven fabric. Provided in close contact with the rear surface of the water retention layer. In this case, the anti-slip layer and the non-woven fabric, or the anti-slip layer and the non-woven fabric and the water retaining layer are joined by sewing, bonding, or the like. The anti-slip layer has higher frictional force, adhesive force and the like on the floor surface than non-woven fabric, water retaining layer, etc. that do not have anti-slip means.

Furthermore, the mat of the present invention includes a water retention layer mainly composed of polyester and acrylic fused to the back surface of the nonwoven fabric mainly composed of polyester. A nonwoven fabric mainly composed of polyester and a water retention layer comprising acrylic as a major component and containing little or no polyester are difficult to fuse, but a water retention layer comprising polyester as a major component and little or no acrylic has low water retention. Therefore, the water retention layer contains polyester and acrylic as main components.

Furthermore, the mat of the present invention comprises a non-slip layer made of a non-woven sheet, which is a non-woven fabric different from the non-woven fabric on the surface (upper surface), comprising a non-woven fabric and a water-retaining layer containing polyester as a main component. Prepare by fusing to the back. When polypropylene is the main component, the nonwoven sheet, the nonwoven fabric, and the water retaining layer are easily fused. Moreover, the synthetic resin which has adhesiveness is apply | coated to the whole or part of the back surface of the nonwoven sheet of a non-slip layer. The applied synthetic resin has high adhesion to the floor surface.
Furthermore, the non-woven fabric, the water retaining layer, and the anti-slip layer are fused at the peripheral edge and the central portion, and the fused portion at the central portion forms a groove.

According to the mat of the present invention, water on the soles of the feet can be efficiently scraped off by the protrusions, that is, by the shape and frictional force of the irregular cross-section fibers forming the nonwoven fabric, and the user's feet slip. This can be suppressed. Furthermore, since the surface of the nonwoven fabric is raised, the water on the sole of the foot is scraped off more efficiently, and the user's foot can be further prevented from slipping. In addition, since the surface area of the nonwoven fabric is large because the plurality of raised rows are separated, the mat of the present invention is excellent in water permeability, air permeability, and quick drying.

  Furthermore, since the nonwoven fabric has a high water permeability, water that has been scraped off by the nonwoven fabric, water dripped onto the nonwoven fabric, or the like is allowed to penetrate through the nonwoven fabric to the floor surface, or is disposed on the back surface of the nonwoven fabric through the nonwoven fabric. By impregnating the water retaining layer and retaining the water, it is possible to prevent the front side of the nonwoven fabric, that is, the surface of the mat from remaining wet. As a result, even when there are many users, it is possible to suppress the user from feeling uncomfortable during use.

  Furthermore, since the non-woven fabric formed of the irregular cross-section fibers has a high crisp feeling, the mat has a comfortable tactile sensation for the user, and the user is less likely to notice the wetness of the non-woven fabric. That is, user comfort can be improved.

  Moreover, since a nonwoven fabric has high air permeability, it is quick to dry after use as a foot wipe mat or after washing. For this reason, a user's comfort and convenience can be improved.

Furthermore, according to the mat of the present invention, the water scraped off by the nonwoven fabric, the water dripped onto the nonwoven fabric, and the like are infiltrated into the nonwoven fabric to reach the water retaining layer, and the water retaining layer retains the water. By this, it can suppress that the surface side of a nonwoven fabric, ie, the surface of a mat | matte, remains wet, and can suppress that the floor surface on which the mat | matte is laid is wetted.

  As a result, even when there are many users, the user can be prevented from feeling uncomfortable when using the mat. Further, when the user moves from the mat to the floor, it is possible to prevent the soles of the feet from getting wet again. Furthermore, there is no need to wipe and clean the wet floor again. That is, user comfort and convenience can be improved.

Furthermore, according to the mat of the present invention, since the frictional force, the adhesive force and the like of the anti-slip layer to the floor surface are high, the mat can be fixed to the floor surface by the anti-slip layer. As a result, it is possible to prevent the user from sliding the foot with the mat.

  Furthermore, when the non-slip layer is waterproof, it is possible to prevent the floor surface on which the mat is laid from getting wet.

Furthermore, according to the mat of the present invention, since the water retention layer is mainly composed of polyester, the water retention layer is a non-woven fabric mainly composed of polyester as compared with a water retention layer mainly composed of acrylic and not or little polyester. As a result, the nonwoven fabric and the water retaining layer can be prevented from separating.

  In addition, since the water retention layer is mainly composed of acrylic, the water retention is higher than that of a water retention layer that is mainly composed of polyester and contains little or no acrylic. As a result, the water retention layer can reliably retain the water that has penetrated the nonwoven fabric.

Furthermore, according to the mat of the present invention, the non-slip layer is made of a nonwoven sheet mainly composed of polypropylene. For this reason, the non-slip layer can be easily fused with the nonwoven fabric and the water retention layer mainly composed of polyester, as compared with the anti-slip layer using a non-woven sheet containing no or almost no polypropylene. As a result, it is possible to suppress separation of the nonwoven fabric, the water retaining layer, and the anti-slip layer.

  Further, the non-slip layer using a non-woven sheet coated with a synthetic resin mainly composed of, for example, polyethylene and having an adhesive property on the entire surface or a part thereof uses, for example, a non-woven sheet not coated with a synthetic resin. Therefore, the mat can be securely fixed to the floor surface by the anti-slip layer.

  Furthermore, when the synthetic resin is applied to the entire surface of the non-slip layer of the non-slip layer, the adhesive force can be further increased, and the anti-slip layer can be waterproof. On the other hand, when a synthetic resin is applied to a part of the non-slip layer of the non-slip layer, the adhesive strength is too strong to make it difficult to remove the mat from the floor, or the synthetic resin remains on the floor after peeling. In addition, the amount of synthetic resin used during production can be reduced.

Furthermore, when manufacturing the mat by fusing the slip layer and the nonwoven fabric and the water-retaining layer, the slip layer and the nonwoven fabric and the water-retaining layer, for example, or bonding by lamination, or sewn together with thread In addition, the present invention has excellent effects such as the number of manufacturing steps can be reduced.
Moreover, the nonwoven fabric, the water retaining layer, and the anti-slip layer are fused not only at the peripheral portion but also at the central portion. For this reason, a nonwoven fabric, a water retention layer, and an anti-slip | skid layer can be joined more firmly than the case where only a peripheral part is melt | fused.
Further, since the mat has flexibility, it can be stored, for example, by folding the mat. In particular, the mat can be easily folded at the groove portion, and further, when the mat is returned to its original shape, deformation caused by bending can be prevented from occurring in the raised rows of the nonwoven fabric and detracting from the aesthetic appearance. Furthermore, since the groove portion has lower elasticity than the portion where the groove portion is not formed, when the groove portion is bent at the groove portion, it is suppressed from returning to the original shape due to the elasticity of the mat.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.

  FIGS. 1 and 2 are a plan view and a bottom view showing the configuration of the mat 1 according to the present invention, and FIGS. 3A and 3B are a front view and a side view, respectively. FIG. 4 is a perspective view showing the configuration of the nonwoven fabric 2, the water retention layer 4, and the anti-slip layer 3 included in the mat 1. Further, FIG. 5 is a cross-sectional view of the modified cross-section fiber 200 of the nonwoven fabric 2 provided in the mat 1.

  6 (a) and 6 (b) are a schematic plan view and a schematic bottom view showing the configuration of the mat 1, and FIGS. 7 (a) and 7 (b) are a schematic front view and a schematic side view, respectively. It is. FIGS. 8A and 8B are a schematic enlarged plan view and a schematic cross-sectional view showing the configuration of the mat 1. FIG. 8A shows an enlarged view of one of the four squares in which the mat 1 is divided by the U-shaped fused portion 10, and FIG. It is sectional drawing of the AA 'line in FIG. 6A, 7 and 8, detailed illustration of the raised rows 20, 20,... Is omitted.

  The mat 1 has a substantially square shape of 656 mm × 656 mm in plan view, and has a nonwoven fabric 2 on the front surface (upper surface), a non-slip layer 3 on the back surface (lower surface), and a water retention layer 4 on the inside. That is, the mat 1 has a three-layer structure. A cross-shaped groove is formed at the center of the mat 1, and a rectangular peripheral portion having a thickness substantially the same as the thickness of the bottom of the groove is integrally formed on the four sides. The groove portion and the peripheral portion are formed by fusing the nonwoven fabric 2, the anti-slip layer 3, and the water retention layer 4. That is, the mat 1 is formed with a pad-shaped fused portion 10. Further, the mat 1 is formed with a fused portion 11 having a thickness substantially the same as the thickness of the fused portion 10 in each of four squares divided by the U-shaped fused portion 10. In the present embodiment, the fused portions 11, 11,... Each form a flower pattern. Moreover, the hole 1a which can penetrate a string, a chain, etc. is formed in the cross | intersection part of the peripheral part of the melt | fusion part 10 and a groove part.

  Nonwoven fabric 2 is 100% polyester and is formed by needle punching. The nonwoven fabric 2 is composed of a modified cross-section fiber 200 having four sharp ridges 20a, 20a,... Along the longitudinal direction at the circumferential position of the cross section. As shown in FIG. 5, the irregular cross-section fiber 200 of the nonwoven fabric 2 in the present embodiment has a substantially rhombic cross section having four concave sides, and therefore, a deformed cross section fiber having a substantially rhombic cross section having four straight sides. Rather, the protrusions 20a, 20a,... In addition, the cross-sectional shape of the irregular cross-section fiber 200 is not limited to a rhombus, and may be various polygons, a star shape, or the like.

  Moreover, on the upper surface of the nonwoven fabric 2, raised rows 20, 20,... Are formed that are juxtaposed in one side direction and whose longitudinal direction is along the other side direction of the mat 1. Each raised row 20, 20,... Has a width of about 3 mm and a height of about 2 mm, the pair of raised rows 20, 20 are juxtaposed about 1 mm apart, and the pair of raised rows 20, 20 are about 4 mm. They are regularly spaced apart. On the other hand, the lower surface of the nonwoven fabric 2 is not raised. The thickness of the nonwoven fabric 2 is about 2 mm excluding the height of the raised rows 20.

  The non-slip layer 3 is made of a non-woven sheet which is 100% polypropylene and is a non-woven fabric having a thickness of about 0.5 mm. The fibers of the nonwoven sheet forming the anti-slip layer 3 are not irregular cross-section fibers. The lower surface 3a of the anti-slip layer 3 is subjected to anti-slip processing by entirely applying a 100% polyethylene synthetic resin having adhesiveness. On the other hand, the synthetic resin is not applied to the upper surface 3 b of the anti-slip layer 3.

  The water-retaining layer 4 includes 50% polyester and 50% water-absorbing acrylic, and is made of a cotton pad having a thickness of about 8 mm. The water retaining layer 4 absorbs water that has penetrated into the nonwoven fabric 2 and retains the water.

  When the mat 1 is manufactured, for example, the manufacturer has a thin non-woven sheet coated with a synthetic resin on one side to be the anti-slip layer 3, a pad to be the water retaining layer 4, and a raised row 20 on the side to be the non-woven fabric 2. , 20,... Are prepared. Next, the manufacturer arranges a thin non-woven sheet with the synthetic resin coated side down as much as possible on the lower surface 3a, and laminates batting on the upper surface 3b of the non-woven sheet. Further, a thick nonwoven fabric is laminated with the raised rows 20, 20,. Next, the manufacturer joins the nonwoven fabric to be the nonwoven fabric 2, the batting to be the water retaining layer 4, and the nonwoven sheet to be the anti-slip layer 3 by heat fusion at about 170 ° C. using a press, and finally, The mat 1 is formed by cutting into a desired shape. Here, the fusion | melting parts 10 and 11 of the mat | matte 1 are formed simultaneously by heat sealing | fusion process.

  In addition, joining of the nonwoven fabric 2, the water retention layer 4, and the anti-slip layer 3 is not limited to heat fusion, but may be performed by laminating, sewing using a thread, or the like. However, the joining process by heat fusion has a simpler manufacturing process than joining by bonding, sewing, or the like.

  Further, the nonwoven fabric 2 and the anti-slip layer 3 may be joined, and the water retention layer 4 may be disposed only between the joined nonwoven fabric 2 and the anti-slip layer 3. However, by joining the water retaining layer 4 to the nonwoven fabric 2 and the anti-slip layer 3 as in the present embodiment, the water retaining layer 4 that is a batting is prevented from being unevenly distributed inside the mat 1. As a result, the deformation of the mat 1 due to the uneven distribution of the water retention layer 4, a decrease in the water retention capability, and the like are prevented.

  The mat 1 as described above is used as a bath mat, for example, and is laid on the floor in front of a bathroom door. The mat 1 can be washed. For example, the mat 1 can be reused repeatedly in a clean state by washing it when it is soiled and drying it after washing.

  The non-woven fabric 2 on the upper surface of the mat 1 is formed of a modified cross-section fiber having ridges 20a, 20a,..., And for this reason, the user's foot is less than a general non-woven fabric formed of a circular cross-section fiber. The frictional force against the back is large. In addition, raised rows 20, 20,... Are provided on the upper surface of the nonwoven fabric 2. As a result, the water on the soles of the user's wet feet can be scraped off efficiently, and the user's feet can be prevented from slipping.

  Furthermore, the nonwoven fabric 2 is porous and has a large surface area because the raised rows 20, 20,. As a result, the nonwoven fabric 2 is excellent in water permeability, air permeability, and quick drying.

  Specifically, the water scraped off by the nonwoven fabric 2, the water dripped onto the nonwoven fabric 2, etc. quickly passes through the nonwoven fabric 2 and reaches the water retaining layer 4 to be retained. For this reason, it can suppress that the surface of the nonwoven fabric 2, ie, the mat | matte 1, remains wet, and even when there are many users, it can suppress that a user feels discomfort at the time of use. . Moreover, the water | moisture content which the water retention layer 4 retained water, the water | moisture content which remain | survives slightly in the nonwoven fabric 2, etc. easily evaporate with the air permeability of the nonwoven fabric 2, and the magnitude | size of a surface area. Furthermore, drying of the mat 1 after washing is quick. Furthermore, a string, a chain, etc. can be inserted and suspended through the hole 1a. In this case, for example, the mat 1 can be further dried by suspending it in an air-drying place.

  Moreover, the nonwoven fabric 2 formed with the irregular cross-section fiber 200 having the ridges 20a, 20a,... Has a higher crisp feeling than the nonwoven fabric 2 formed with a circular cross-section fiber. For this reason, the mat 1 has a tactile sensation comfortable for the user, and further, since the contact area with the sole of the user's foot is small, it is difficult for the user to notice the wetness of the nonwoven fabric 2. That is, user comfort can be improved.

  Moreover, since the water which permeate | transmitted the nonwoven fabric 2 is water-retained by the water retention layer 4, and does not leak out of the mat 1, it can suppress that the floor surface under the mat 1 gets wet.

  When the mat 1 is laid on the floor surface, the anti-slip layer 3 is non-slip with respect to the floor surface because the adhesive synthetic resin applied to the lower surface 3a adheres to the floor surface. As a result, the mat 1 is fixed to the floor surface, and the user can be prevented from sliding along with the mat 1. Further, since the synthetic resin is applied to the entire surface of the anti-slip layer 3, even when moisture penetrates the water retaining layer 4, it does not leak to the outside of the mat 1. As a result, it is possible to prevent the floor surface under the mat 1 from getting wet. Note that a synthetic resin may be applied to the lower surface 3a in a striped pattern, for example.

  Further, when changing the fixing position of the mat 1, when the mat 1 is soiled, etc., when the mat 1 is peeled off the floor surface, the user can easily hold the mat 1 by grasping and lifting the end of the mat 1. Peel from the floor.

  The fusion | bond part 10 and the fusion | melting part 11 have joined the nonwoven fabric 2, the anti-slip | skid layer 3, and the water retention layer 4, and are suppressing the isolation | separation of the nonwoven fabric 2, the anti-slip | skid layer 3, and / or the water retention layer 4. FIG. The fusion part 10 may be formed only on the periphery of the mat 1, but the nonwoven fabric 2, the anti-slip layer 3, and the water retention layer 4 are formed by forming a pad shape as in the present embodiment. Furthermore, it can join firmly and can also serve as the decoration of the mat 1, The aesthetic appearance of the mat 1 is improved. Moreover, the fusion | melting part 11 also serves as a joint and a decoration, suppresses isolation | separation of each layer of the mat 1, and improves the beauty | look. In addition, the shape of the melt | fusion part 10 and the melt | fusion part 11 is not restricted to the shape of this Embodiment. For example, the groove part of the fusion part 10 may be increased instead of providing the fusion part 11.

  The mat 1 is flexible because it is composed of a polyester non-woven fabric, a polypropylene non-woven sheet, and a polyester / acryl blended cotton pad. As a result, for example, the mat 1 can be folded and stored. it can. In particular, the mat 1 can be easily folded at the groove portion of the fused portion 10, and when the mat 1 is returned to its original shape, deformation due to the bending occurs in the raised rows 20, 20,. It is suppressed. Moreover, since the groove part of the fusion | melting part 10 has a lower elasticity than the part in which the groove part is not formed, when it bends in the groove part of the fusion | melting part 10, it returns to the original shape by the elasticity of the mat 1. The

  Further, since the nonwoven fabric 2, the anti-slip layer 3 and the water retention layer 4 are mainly composed of polyester or polypropylene, they are easily fused together. That is, for example, the layers are bonded more firmly than when the water retention layer 4 containing cotton as a main component, the water retention layer 4 including water-absorbing acrylic as a main component and not containing polyester, and the like. On the other hand, the water-retaining layer 4 containing polyester as a main component and containing no water-absorbing acrylic is advantageous in terms of fusion with the nonwoven fabric 2 and the anti-slip layer 3, but has a problem of low water retention. Since the water retaining layer 4 contains 50% each of polyester and water-absorbing acrylic, it is advantageous for both fusion and bonding.

  Note that the mat 1 may have a two-layer structure in which the nonwoven fabric 2 and the water retention layer 4 are omitted from the anti-slip layer 3, and the nonwoven fabric 2 and the anti-slip layer 3 in which the water retention layer 4 is omitted are fused. A two-layer structure may be used. Further, the mat 1 may have a one-layer structure using the nonwoven fabric 2 from which the anti-slip layer 3 and the water retaining layer 4 are omitted. Further, the anti-slip layer 3 may be configured not to apply a synthetic resin to a nonwoven sheet but to apply a synthetic resin to the back surface of the water retaining layer 4 or the nonwoven fabric 2.

It is a top view which shows the structure of the mat | matte which concerns on this invention. It is a bottom view which shows the structure of the mat | matte which concerns on this invention. It is the front view and side view which show the structure of the mat | matte which concerns on this invention. It is a perspective view which shows the structure of the nonwoven fabric with which the mat | matte which concerns on this invention, a water retention layer, and an antiskid layer. It is sectional drawing of the fiber of the nonwoven fabric with which the mat concerning this invention is provided. It is the schematic plan view and schematic bottom view which show the structure of the mat | matte which concerns on this invention. It is the schematic front view and schematic side view which show the structure of the mat | matte which concerns on this invention. It is the outline enlarged plan view and schematic sectional drawing which show the structure of the mat | matte which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mat 2 Nonwoven fabric 200 Abnormal cross-section fiber 20a Projection part 3 Non-slip layer 4 Water retention

Claims (1)

In mats made of non-woven fabric,
On the back surface of the nonwoven fabric, provided with a water retention layer that retains water that has penetrated the nonwoven fabric,
Provided with a non-slip layer on the back surface of the water retaining layer to prevent slipping against the floor surface,
The non-woven fabric is composed of fibers having ridges along the longitudinal direction,
On the surface of the nonwoven fabric, Ri plurality of brushed rows spaced form Thea,
The nonwoven fabric is mainly composed of polyester,
The water retention layer is mainly composed of polyester and acrylic,
The anti-slip layer is formed by applying an adhesive synthetic resin to the back surface of a nonwoven sheet mainly composed of polypropylene,
The non-woven fabric, the water retention layer, and the anti-slip layer are fused at the periphery and the center,
Mat fused portion of said central portion, characterized that you have to form a groove.

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