A foldable composite core with good flow-guiding effect

Abstract

The utility model relates to the technical field of disposable absorbent products, and proposes a folded composite core body with reasonable structural design, fast liquid infiltration and good diversion effect, comprising an absorption layer, wherein the absorption layer is continuously folded along the left and right directions, the upper surface of the absorption layer is a continuous V-shaped groove, the lower surface of the absorption layer is a continuous inverted V-shaped groove, an upper absorption strip is arranged in the front-to-back direction in the V-shaped groove, a lower absorption strip is arranged in the front-to-back direction in the inverted V-shaped groove, diversion grooves for gas and liquid to flow to increase the front-to-back diversion effect are formed between the upper absorption strips and between the lower absorption strips, an adhesive layer for limiting the deviation of the upper absorption strip and the lower absorption strip is arranged on the upper surface and the lower surface of the absorption layer, and a triangular variable space is formed between the upper absorption strip and the groove bottom of the V-shaped groove and between the lower absorption strip and the groove bottom of the inverted V-shaped groove.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable absorbent articles, in particular to a folding composite core body with good flow guiding effect. Background Art

[0002] Disposable absorbent items such as infant diapers, menstrual pants, sanitary napkins, and adult diapers absorb liquid through the absorbent core. Most of the current absorbent cores are compounded into a flat shape through absorbent materials. The absorbent core is extruded when compounded with the surface layer and the bottom layer. The absorbent core is further compacted during the extrusion, so that even if the guide grooves are pressed out on the surface layer and the absorbent core during compounding, the guide effect is average. Because the inside of the absorbent core is compacted and the gap is small, the effect of liquid infiltration and front-to-back guide is affected.

[0003] Therefore, in order to increase the drainage effect of the absorbent core and avoid the absorption core being compacted and affecting the drainage effect when it is compounded with the surface layer, this case is created. Utility Model Content

[0004] Therefore, in view of the above problems, the utility model proposes a folding composite core with reasonable structural design, fast liquid infiltration and good diversion effect.

[0005] In order to solve the above technical problems, the solution adopted by the utility model is: a foldable composite core with good diversion effect, including an absorption layer, which is continuously folded along the left and right directions, the upper surface of the absorption layer is a continuous V-shaped groove, and the lower surface of the absorption layer is a continuous inverted V-shaped groove. An upper absorption strip is arranged in the V-shaped groove along the front-to-back direction, and a lower absorption strip is arranged in the inverted V-shaped groove along the front-to-back direction. Diversion grooves for gas and liquid to flow to increase the front-to-back diversion effect are formed between the upper absorption strips and between the lower absorption strips. Adhesive layers for limiting the displacement of the upper absorption strip and the lower absorption strip are arranged on the upper and lower surfaces of the absorption layer. A triangular variable space is formed between the upper absorption strip and the bottom of the V-shaped groove, and between the lower absorption strip and the bottom of the inverted V-shaped groove. When the composite core is extruded and compounded with the surface layer and the bottom layer, the upper absorption strip or the lower absorption strip surface is bonded, and the space itself is compressed to adapt to the extrusion compounding to avoid affecting the function of the diversion groove.

[0006] A further improvement is that the left side or right side of the absorption layer extends horizontally below the lower absorption strip to prevent the lower absorption strip from detaching from the lower wrapping layer, the upper surface of the lower wrapping layer is provided with a lower adhesive layer for bonding the lower absorption strip, the free side of the lower wrapping layer is provided on the absorption layer, and a lower guide channel is formed between the lower wrapping layer and the guide groove.

[0007] A further improvement is that the right side or left side of the absorption layer horizontally extends above the upper absorption strip to prevent the upper absorption strip from detaching from the upper wrapping layer, the lower surface of the upper wrapping layer is provided with an upper adhesive layer for bonding the upper absorption strip, the free side of the upper wrapping layer is provided on the absorption layer, and an upper guide channel is formed between the upper wrapping layer and the guide groove.

[0008] A further improvement is that the upper absorbent strip and the lower absorbent strip are formed into compact long strips by rolling absorbent paper with high molecular absorbent particles.

[0009] A further improvement is that the absorption layer is a non-woven fabric with water absorption effect.

[0010] By adopting the above technical solution, the beneficial effects of the utility model are:

[0011] 1. The upper and lower flow channels in this case can provide gas and liquid flow, increasing the liquid flow effect in the front-to-back direction. The upper and lower absorbent strips are rolled up tightly and can automatically deform and recover after being squeezed. The upper and lower flow channels provide expansion space for the upper and lower absorbent strips after they absorb liquid and expand, so that the composite core will not increase in thickness too much after absorbing liquid, so that sanitary napkins, diapers or menstrual pants can still remain flat, improving the consumer's use experience.

[0012] 2. The triangular variable space in this case is squeezed under the extrusion force when the composite core and the surface layer and bottom layer of the sanitary napkin are compounded, so that the bottom of the V-shaped groove and the inverted V-shaped groove fits on the surface of the upper absorbent strip and the lower absorbent strip. After the extrusion force is removed, the upper absorbent strip and the lower absorbent strip are deformed and reset, the triangular variable space disappears, the V-shaped groove becomes an arc groove, and the guide groove can still maintain the guide effect.

[0013] 3. The upper wrapping layer and the lower wrapping layer increase the surface area of ​​the core, improve the stability of the composite with the surface layer and the bottom layer, avoid delamination of sanitary napkins, diapers or air inlets, and form a guide channel with the guide groove, which can well restrain the expanded upper and lower absorbent strips. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal cross-sectional structure of an embodiment of the utility model.

[0015] Figure 2 yes Figure 1 A magnified view of the local structure at point A. DETAILED DESCRIPTION

[0016] The utility model is now further described in conjunction with the accompanying drawings and specific embodiments.

[0017] refer to Figure 1 to Figure 2The embodiment of the utility model discloses a folded composite core with good diversion effect, including an absorption layer 10, the absorption layer 10 is a non-woven fabric with water absorption effect, the absorption layer 10 is continuously folded along the left and right direction, the upper surface of the absorption layer 10 is a continuous V-shaped groove 11, the lower surface of the absorption layer 10 is a continuous inverted V-shaped groove 12, the V-shaped groove 11 is provided with an upper absorption strip 13 along the front-to-back direction, the inverted V-shaped groove 12 is provided with a lower absorption strip 14 along the front-to-back direction, and the upper absorption strips 13 and the lower absorption strips 14 are arranged between them. A guide groove is formed through which gas and liquid can flow to increase the front-to-back guide effect. The upper and lower surfaces of the absorbent layer 10 are provided with an adhesive layer for limiting the displacement of the upper absorbent strip 13 and the lower absorbent strip 14. A triangular variable space 15 is formed between the upper absorbent strip 13 and the bottom of the V-shaped groove 11 and between the lower absorbent strip 14 and the bottom of the inverted V-shaped groove 12. When the composite core is extruded and compounded with the surface layer and the bottom layer, the upper absorbent strip 13 or the lower absorbent strip 14 is bonded to the surface, and the space itself is compressed to adapt to the extrusion compounding to avoid affecting the function of the guide groove. When the composite core and the surface layer and bottom layer of the sanitary napkin are composited, under the action of the extrusion pressure, the upper absorbent strip 13 and the lower absorbent strip 14 approach each other and deform to squeeze the triangular variable space 15, so that the bottom of the V-shaped groove 11 and the inverted V-shaped groove 12 fit on the surface of the upper absorbent strip 13 and the lower absorbent strip 14. After the extrusion pressure is removed, the upper absorbent strip 13 and the lower absorbent strip 14 are deformed and restored, the triangular variable space 15 disappears, the V-shaped groove becomes an arc groove, and the guide groove can still maintain the guide effect.

[0018] The right side or left side of the absorbent layer 10 horizontally extends above the upper absorbent strip 13 to prevent the upper absorbent strip 13 from detaching from the upper wrapping layer 16, the lower surface of the upper wrapping layer 16 is provided with an upper adhesive layer for bonding the upper absorbent strip 13, the free side of the upper wrapping layer 16 is provided on the absorbent layer 10, and an upper guide channel 17 is formed between the upper wrapping layer 16 and the guide groove. The left side or right side of the absorbent layer 10 horizontally extends below the lower absorbent strip 14 to prevent the lower absorbent strip 14 from detaching from the lower wrapping layer 18, the upper surface of the lower wrapping layer 18 is provided with a lower adhesive layer for bonding the lower absorbent strip 14, the free side of the lower wrapping layer 18 is provided on the absorbent layer 10, and a lower guide channel 19 is formed between the lower wrapping layer 18 and the guide groove. The upper wrapping layer 16 and the lower wrapping layer 18 prevent the absorbent strip from separating from the absorbent layer 10 during the transportation of the composite core, and at the same time increase the fitting area with the bottom layer and the surface layer of the sanitary napkin, diaper or menstrual pants, thereby preventing the surface layer, core and bottom layer from separating and delaminating from each other during use.

[0019] The upper absorbent strip 13 and the lower absorbent strip 14 are formed into a compact long strip by rolling absorbent paper with polymer absorbent particles. The compact strip can recover by itself after being squeezed and deformed. After the absorbent strip absorbs liquid, the polymer absorbent particles expand and burst through the absorbent paper to enter the guide channel, so that the sanitary napkin, diaper or menstrual pants will not expand toward the surface or expand slightly toward the surface after absorbing liquid, and can still remain flat.

[0020] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A foldable composite core with good diversion effect, characterized in that: The invention comprises an absorption layer, which is continuously folded along the left-right direction, the upper surface of the absorption layer is a continuous V-shaped groove, the lower surface of the absorption layer is a continuous inverted V-shaped groove, an upper absorption strip is arranged in the V-shaped groove along the front-to-back direction, a lower absorption strip is arranged in the inverted V-shaped groove along the front-to-back direction, and guide grooves are formed between the upper absorption strips and the lower absorption strips for allowing gas and liquid to flow to increase the front-to-back guide effect, an adhesive layer for limiting the displacement of the upper absorption strip and the lower absorption strip is arranged on the upper surface and the lower surface of the absorption layer, and a triangular variable space is formed between the upper absorption strip and the bottom of the V-shaped groove and between the lower absorption strip and the bottom of the inverted V-shaped groove, which is bonded to the surface of the upper absorption strip or the lower absorption strip when the composite core is extruded and compounded with the surface layer and the bottom layer, and compresses its own space to adapt to the extrusion and compounding to avoid affecting the function of the guide groove.

2. A foldable composite core with good flow-guiding effect according to claim 1, characterized in that: The left side or right side of the absorption layer horizontally extends below the lower absorption strip to prevent the lower absorption strip from detaching from the lower wrapping layer, the upper surface of the lower wrapping layer is provided with a lower adhesive layer for bonding the lower absorption strip, the free side of the lower wrapping layer is provided on the absorption layer, and a lower guide channel is formed between the lower wrapping layer and the guide groove.

3. A foldable composite core with good flow-guiding effect according to claim 1, characterized in that: The right side or left side of the absorption layer horizontally extends above the upper absorption strip to prevent the upper absorption strip from detaching from the upper wrapping layer, the lower surface of the upper wrapping layer is provided with an upper adhesive layer for bonding the upper absorption strip, the free side of the upper wrapping layer is provided on the absorption layer, and an upper guide channel is formed between the upper wrapping layer and the guide groove.

4. A folded composite core with good flow guiding effect according to claim 1, 2 or 3, characterized in that: The upper absorption strip and the lower absorption strip are formed into a compact long strip by rolling absorbent paper with high molecular water-absorbing particles.

5. The foldable composite core with good flow guiding effect according to claim 1, characterized in that: The absorption layer is a non-woven fabric with water absorption effect.

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