Integrated composite diaper and its production process

Abstract

The present invention relates to the field of diaper products and their production process, and specifically discloses an integrated composite diaper, including a waterproof outer layer and an absorbent cotton core inner layer, the two sides of the waterproof outer layer and the absorbent cotton core inner layer are composited with water-collecting cloth, and the water-collecting cloth is provided with elastic strips, and the water-collecting cloth is an integrated piece, and is divided into an outer section, a first folding section, a second folding section, a third folding section, a fourth folding section and an inner section in sequence along its width direction, and the outer section is overlapped and compositely connected to the outer surface edge of the waterproof outer layer on the corresponding side, and the inner section is overlapped and compositely connected to the edge between the waterproof outer layer and the absorbent cotton core inner layer on the corresponding side or compositely connected to the outer surface edge of the absorbent cotton core inner layer on the corresponding side. The diaper with this structure is a new structure, and the structure of the water-collecting cloth can achieve better barrier and is not easy to leak, can improve the anti-leakage effect, and can save materials, and its production process is also relatively simple and easy to implement.

Description

Technical Field

[0001] The invention relates to the product field of diapers. Background Art

[0002] The production process of diapers currently on the market, whether for adults or infants, is to transport each layer of material into a composite connection in an upper and lower relationship. For example, a diaper usually includes a waterproof outer layer, an inner layer, and an absorbent cotton core inner layer or an absorbent core of other materials composited between the waterproof outer layer and the inner layer. The edges of the waterproof outer layer and the inner layer exceed the edges of the absorbent cotton core inner layer and are compositely connected together by glue, and then the two sides of the inner layer are composited with three-dimensional anti-side leakage edge strips by glue to achieve anti-side leakage. Although the diaper of this structure has the edge composite connection of the inner waterproof outer layer and the three-dimensional anti-side leakage edge strips compositely connected on both sides, it can play a certain anti-leakage role. However, when the diaper is in a state of large urine volume for a long time, exceeds the absorption capacity of the absorbent cotton core inner layer, and is compressed, urine will leak from the composite part. This is because there is only a composite connection between the upper and lower layers at the composite connection through the glue. In the production process, there is a possibility that the glue is scarce locally or there is a problem with the production equipment, which makes it impossible to evenly apply the glue, resulting in these composite unstable positions that may cause urine leakage. In view of this, the inventor of this case conducted research and development on the existing diaper product structure and production process, which led to the creation of this case. Summary of the invention

[0003] The purpose of the present invention is to provide a new structure, an integrated composite diaper that can improve the anti-leakage effect and save materials.

[0004] Another object of the present invention is to provide a production process for the above-mentioned integrated composite diaper.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present invention is: an integrated composite diaper, comprising a waterproof outer layer and an absorbent cotton core inner layer compositely connected to the inner side of the waterproof outer layer, the length sides of the waterproof outer layer and the absorbent cotton core inner layer are respectively composited with water-collecting cloth along the length of the sides of the two sides, and the water-collecting cloth is provided with elastic strips, and the water-collecting cloth is an integrated piece, which is divided into an outer section, a first folding section, a second folding section, a third folding section, a fourth folding section and an inner section in sequence along its width direction, the outer section is overlapped and compositely connected to the outer surface edge of the waterproof outer layer on the corresponding side, and the overlapped and compositely connected inner section It is connected to the edge between the waterproof outer layer and the absorbent cotton core inner layer on the corresponding side or is compositely connected to the outer surface edge of the absorbent cotton core inner layer on the corresponding side, the inner side surfaces of the first folded section and the fourth folded section are relatively overlapped, the inner side surfaces of the second folded section and the third folded section are correspondingly overlapped, the outer side surface of the fourth folded section is relatively overlapped with the outer surface edge of the absorbent cotton core inner layer on the corresponding side or the outer side surface of the fourth folded section and the inner section are relatively overlapped, the outer side surfaces of the first folded section and the second folded section are correspondingly overlapped and not compositely connected, and the elastic strip is arranged on the corresponding first folded section and / or second folded section.

[0006] The inner side surfaces of the first folded section and the fourth folded section are compositely connected, the inner side surfaces of the second folded section and the third folded section are compositely connected, and / or the fourth folded section is compositely connected to the outer side surface of the inner section or the outer surface edge of the inner layer of the absorbent cotton core on the corresponding side.

[0007] The elastic strip is compositely connected between the inner side surfaces of the first folded section and the fourth folded section, and / or between the inner side surfaces of the second folded section and the third folded section.

[0008] The production process of the integrated composite diaper is produced by diaper production equipment. The production process steps in the layer conveying and composite process of the production are as follows:

[0009] 1) Two separated water-collecting cloths of diapers are conveyed into the conveying mechanism, wherein the water-collecting cloths are sequentially divided into an outer section, a first folding section, a second folding section, a third folding section, a fourth folding section and an inner section along the width direction thereof, and glue is sprayed on the upper surfaces of the outer sections of the two water-collecting cloths respectively by a glue spraying device;

[0010] 2) The waterproof outer layer of the diaper is conveyed above the two water-collecting cloths by a conveying mechanism, and the two side edges of the waterproof outer layer overlap with the outer side sections of the corresponding water-collecting cloths respectively, and the lower surfaces of the two side edges of the waterproof outer layer are compositely connected with the upper surfaces of the outer side sections of the corresponding water-collecting cloths respectively by a rolling mechanism;

[0011] 3) The conveying mechanism conveys the elastic strips above the first folding section and / or the second folding section of the two water-collecting fabrics respectively, and the glue spraying device sprays glue on the elastic strips. The rolling mechanism compositely connects the elastic strips to the upper surface of the first folding section and / or the second folding section of the water-collecting fabrics on the corresponding side, and sprays glue on the upper surfaces of the third folding section, the fourth folding section and the inner section of the two water-collecting fabrics respectively;

[0012] 4) Folding the third folding section, the fourth folding section and the inner section upwards by a folding device until the second folding section and the third folding section are relatively overlapped, the first folding section and the fourth folding section are relatively overlapped, and the inner section and the upper surface edge of the waterproof outer layer on the corresponding side are relatively overlapped, and the second folding section and the third folding section are compositely connected, the first folding section and the fourth folding section are compositely connected, and the inner section and the upper surface edge of the waterproof outer layer on the corresponding side are compositely connected by a rolling mechanism;

[0013] 5) Using a folding device, the second folding section and the third folding section of the two water-collecting cloths are folded downwards until the second folding section is relatively overlapped below the first folding section;

[0014] 6) Spray glue on the upper surface of the waterproof outer layer or the upper surface of the waterproof outer layer and the outer surface of the inner side sections of the two water-collecting cloths through a glue spraying device;

[0015] 7) The absorbent cotton core inner layer of the diaper is conveyed by a conveying mechanism, and the lower surface of the absorbent cotton core inner layer is compositely connected to the upper surface of the waterproof outer layer by a rolling mechanism, or compositely connected to the upper surface of the waterproof outer layer and the two sides of the lower surface are compositely connected to the outer surface of the inner section of the water-collecting cloth on the corresponding side;

[0016] 8) Spraying glue on the outer surface of the fourth folded section and the inner section of the two water-collecting cloths or on the outer surface of the fourth folded section and the upper surface edge of the inner layer of the absorbent core by means of a glue spraying device;

[0017] 9) By means of a folding mechanism, the relatively overlapping first folding section, second folding section, third folding section and fourth folding section are folded upward until the fourth folding section is relatively overlapped above the edge of the upper surface of the inner layer 2 of the absorbent core on the inner side section or the corresponding side, and the fourth folding section is compositely connected with the opposite surface of the inner layer 2 of the absorbent core on the inner side section or the corresponding side by means of a rolling mechanism.

[0018] Before the two separated diaper water-collecting cloths are conveyed into the conveying mechanism in step 1), the two water-collecting cloths are combined into one and cut into two pieces by a cutting device, and the two separated water-collecting cloths are separated by a set distance by a corrector, and then step 1) is entered.

[0019] In the step 1), the interval between the two separated water-collecting cloths of the diaper is 80-100 mm, and the range of the glue spraying on the upper surface of the outer sections of the two water-collecting cloths is 7-9 mm from the edge of the outer sections.

[0020] The total width of the first folded section and the second folded section is 30-50 mm, the total width of the third folded section, the fourth folded section and the inner section is 60-80 mm, and the second folded section and the third folded section are 5-20 mm respectively.

[0021] The total width of the first folded section and the second folded section is 40 mm, the total width of the third folded section, the fourth folded section and the inner section is 70 mm, and the second folded section and the third folded section are 10 mm respectively.

[0022] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: the anti-leakage structure on both sides of the above diaper is different from the anti-leakage structure on both sides of the existing diaper products, and the structural setting of the folded and compositely connected water-collecting cloth on both sides forms a structural setting of an integral sheet covering the edge. This is a new type of structural setting, which can prevent urine from directly leaking into the composite connection and is not easy to penetrate, but will be blocked by the integrally folded water-collecting cloth, thereby achieving the purpose of improving the anti-leakage effect. The structural composite connection is stable, and the folded second folded section and the third folded section are not compositely connected with the first folded section when the diaper is in use, and under the elastic contraction of the elastic band, a three-dimensional anti-side leakage blocking edge strip structure can be formed when the diaper is worn and used.

[0023] In addition, the production process of the one-piece composite diapers of the present invention is a production process method designed for the production of the above-mentioned one-piece composite diapers. Although there are multiple steps of folding, glue dispensing and rolling compounding actions, the process is carried out reasonably and orderly, there will be no mechanical action conflicts between the steps, and the mechanical structure settings are relatively easy to implement. The mechanical structure will not be complicated and difficult to implement, and difficult to operate.

[0024] In addition, compared with the material application of the existing diaper structure, the above-mentioned diaper structure setting can save material application, reduce consumables, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the cross-sectional structure of an integrated composite diaper according to the present invention;

[0026] Figure 2 The present invention relates to a cross-sectional structural diagram of a one-piece composite diaper in a changing state.

[0027] In the figure:

[0028] Waterproof outer layer 1; absorbent cotton core inner layer 2;

[0029] Water-collecting cloth 3; outer section 31; first folding section 32; second folding section 33; third folding section 34;

[0030] Fourth folded section 35; inner section 36; elastic band 4. DETAILED DESCRIPTION

[0031] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0032] This embodiment discloses an integrated composite diaper, such as Figure 1 and Figure 2 As shown, it includes a waterproof outer layer 1, an absorbent cotton core inner layer 2 compositely connected to the inner side of the waterproof outer layer 1 (the inner side here refers to the side facing the human skin when the diaper is used), a water-collecting cloth 3 compositely arranged on both sides of the length of the waterproof outer layer 1 and the absorbent cotton core inner layer 2, and an elastic strip 4 arranged on the water-collecting cloth 3. The structural position connection relationship of the product is described in detail below in conjunction with the accompanying drawings.

[0033] As shown in the figure, the water-collecting cloth 3 is an integral piece, and its structure is formed by folding three times during production. According to the folded state, the water-collecting cloth 3 is divided into an outer section 31, a first folded section 32, a second folded section 33, a third folded section 34, a fourth folded section 35 and an inner section 36 along its width direction. The outer section 31 is overlapped and compositely connected to the outer surface edge of the waterproof outer layer 1 on the corresponding side, and the inner section 36 is overlapped and compositely connected to the edge between the waterproof outer layer 1 and the absorbent cotton core inner layer 2 on the corresponding side or compositely connected to the outer surface edge of the absorbent cotton core inner layer 2 on the corresponding side. The figure shows the structural diagram of the former. Both structural settings can achieve the effect that urine cannot directly leak into the composite connection and is not easy to penetrate, but will be blocked by the integrally folded water-collecting cloth. In order to ensure that the structure formed by the folding of the water-collecting cloth 3 can maintain its state, the inner sides of the first folded section 32 and the fourth folded section 35 can be compositely connected by glue, the inner sides of the second folded section 33 and the third folded section 34 can be compositely connected by glue, and the outer side of the fourth folded section 35 and the inner section 36 or the outer surface edge of the absorbent cotton core inner layer 2 on the corresponding side can also be compositely connected by glue.

[0034] The inner side surfaces of the first folded section 32 and the fourth folded section 35 overlap relatively, the inner side surfaces of the second folded section 33 and the third folded section 34 overlap correspondingly, the outer side surface of the fourth folded section 35 overlaps relatively with the outer surface edge of the absorbent cotton core inner layer 2 on the corresponding side, or the outer side surfaces of the fourth folded section 35 and the inner section 36 overlap relatively, the outer side surfaces of the first folded section 32 and the second folded section 33 overlap correspondingly and are not compositely connected, and here the two are not compositely connected to achieve the foldable state of the relatively overlapping second folded section 33 and the third folded section 34, that is, under the elastic contraction of the elastic band, a three-dimensional anti-side leakage blocking edge strip structure can be formed when the diaper is worn and used.

[0035] The elastic strip 4 is arranged corresponding to the first folded section 32 and / or the second folded section 33. In the figure, both the first folded section 32 and the second folded section 33 are arranged near the edges. It is used for elastic contraction when the diaper is used, so that the water-collecting cloth 3 can three-dimensionally fit the human body structure to achieve a better leakage-proof blocking effect. It is also to better cover the elastic strip 4 and prevent the elastic strip 4 from degumming and separating during use, and its elastic effect cannot be achieved. In this embodiment, as shown in the figure, the elastic strip 4 is compositely connected between the inner sides of the first folded section 32 and the fourth folded section 35, and / or between the inner sides of the second folded section 33 and the third folded section 34.

[0036] As shown in the figure, the outer section 31 of the water-collecting cloth 3 is overlapped and compositely connected on the outer side of the edge of the waterproof outer layer 1, and the inner section 36 is overlapped and compositely connected on the inner side of the edge of the waterproof layer 1, and the absorbent cotton core inner layer 2 is overlapped and compositely connected above the inner section 36. In this way, even if there is a possible leakage at the overlapping and composite connection position, the leaked water will also enter the folding and turning part of the water-collecting cloth 3. Since the water-collecting cloth itself is impermeable, it will not penetrate. There is no composite connection seam at the blocking edge strip structure that forms a three-dimensional anti-side leakage, so there will be no leakage, and the double-layer structure has high strength and is not easy to be pulled and damaged.

[0037] The following discloses a production process of the integrated composite diaper of the above structure, which is produced by a diaper production device. The production process steps in the layer conveying and composite process of the production are as follows:

[0038] 1) Two separated water-collecting cloths 3 of diapers are conveyed into the conveying mechanism. In this embodiment, in order to facilitate the conveying and simplify the mechanical structure, the two water-collecting cloths 3 are cut into two pieces by a cutting device before being combined into one piece. Then, the two separated water-collecting cloths 3 are conveyed into the conveying mechanism at a set distance by a corrector. According to the usual specifications of diapers, the spacing between the two water-collecting cloths is preferably 80-100 mm.

[0039] The water-collecting cloth 3 is described in the above structure and is divided into an outer section 31, a first folded section 32, a second folded section 33, a third folded section 34, a fourth folded section 35 and an inner section 36 along its width direction. The outer sections 31 of the two water-collecting cloths 3 are sprayed with glue on their upper surfaces respectively by a glue spraying device. As shown in the figure, the outer sections 31 here correspond to the opposite sides of the two water-collecting cloths 3. The range of the glue spraying on the upper surface of the outer sections 31 is 7-9 mm of the edge of the outer sections 31, which can achieve better stability of the composite connection surface and high structural strength.

[0040] 2) The waterproof outer layer 1 of the diaper is conveyed above the two water-collecting cloths 3 by a conveying mechanism, and the two side edges of the waterproof outer layer 1 overlap with the outer side sections of the corresponding water-collecting cloths 3 respectively, and the lower surfaces of the two side edges of the waterproof outer layer 1 are compositely connected with the upper surfaces of the outer side sections of the corresponding water-collecting cloths 3 respectively by a rolling mechanism;

[0041] 3) The rubber strip 4 is transported into the upper part of the first folded section 32 and / or the second folded section 33 of the two water-collecting cloths 3 respectively through the conveying mechanism, and the rubber strip 4 is sprayed with glue through the glue spraying device, and the rubber strip 4 is compositely connected to the upper surface of the first folded section 32 and / or the second folded section 33 of the water-collecting cloth 3 on the corresponding side through the rolling mechanism, and the upper surface of the third folded section 34, the fourth folded section 35 and the inner section 36 of the two water-collecting cloths 3 are sprayed with glue respectively;

[0042] 4) Folding the third folding section 34, the fourth folding section 35 and the inner section 36 upwards by a folding device until the second folding section 33 and the third folding section 34 are relatively overlapped, the first folding section 32 and the fourth folding section 35 are relatively overlapped, and the inner section 36 and the upper surface edge of the waterproof outer layer 1 on the corresponding side are relatively overlapped, and the second folding section 33 and the third folding section 34 are compositely connected, the first folding section 32 and the fourth folding section 35 are compositely connected, and the inner section 36 and the upper surface edge of the waterproof outer layer 1 on the corresponding side are compositely connected by a rolling mechanism;

[0043] 5) The overlapping second folding sections 33 and the third folding sections 34 of the two water-collecting cloths 3 are folded downward by a folding device until the second folding section 33 is relatively overlapped below the first folding section 32;

[0044] 6) Spraying glue on the upper surface of the waterproof outer layer 1 or the upper surface of the waterproof outer layer 1 and the outer surface of the inner section 36 of the two water-collecting cloths 3 by means of a glue spraying device;

[0045] 7) The absorbent cotton core inner layer 2 of the diaper is conveyed by a conveying mechanism, and the lower surface of the absorbent cotton core inner layer 2 is compositely connected to the upper surface of the waterproof outer layer 1 by a rolling mechanism, or compositely connected to the upper surface of the waterproof outer layer 1 and the two sides of the lower surface are compositely connected to the outer surface of the inner section 36 of the water-collecting cloth 3 on the corresponding side;

[0046] 8) Spraying glue on the outer surfaces of the fourth folded section 35 and the inner section 36 of the two water-collecting cloths 3 or the outer surface of the fourth folded section 35 and the upper surface edge of the inner layer 2 of the absorbent core respectively by means of a glue spraying device;

[0047] 9) By means of a folding mechanism, the relatively overlapping first folding section 32, second folding section 33, third folding section 34 and fourth folding section 35 are folded upward until the fourth folding section 35 is relatively overlapped above the inner section 36 or the upper surface edge of the absorbent core inner layer 2 on the corresponding side, and the fourth folding section 35 is compositely connected with the inner section 36 or the opposite surface of the upper surface edge of the absorbent core inner layer 2 on the corresponding side by means of a rolling mechanism.

[0048] The total width of the first fold section and the second fold section is 30-50 mm, the total width of the third fold section, the fourth fold section and the inner section is 60-80 mm, the second fold section and the third fold section are 5-20 mm respectively. According to the specifications of general diapers, preferably, the total width of the first fold section and the second fold section is 40 mm, the total width of the third fold section, the fourth fold section and the inner section is 70 mm, and the second fold section and the third fold section are 10 mm respectively.

[0049] The diapers produced by the above structure and production process have the advantages of saving materials, high structural strength, not easy to separate at the layered joints, and better leakage prevention effect compared with existing products.

[0050] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in any technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A production process for integrated composite diapers, which is produced by diaper production equipment, characterized in that: The production process steps in the layer conveying and compounding process of manufacturing are as follows: 1) Two separated water-collecting cloths of diapers are conveyed into the conveying mechanism, and the water-collecting cloths are sequentially divided into an outer section, a first folding section, a second folding section, a third folding section, a fourth folding section and an inner section along the width direction thereof, and glue is sprayed on the upper surfaces of the outer sections of the two water-collecting cloths respectively by a glue spraying device; 2) The waterproof outer layer of the diaper is conveyed over the two water-collecting cloths by a conveying mechanism, and the two side edges of the waterproof outer layer overlap with the outer side sections of the corresponding water-collecting cloths respectively, and the lower surfaces of the two side edges of the waterproof outer layer are compositely connected with the upper surfaces of the outer side sections of the corresponding water-collecting cloths respectively by a rolling mechanism; 3) The conveying mechanism conveys the elastic strips above the first folding section and / or the second folding section of the two water-collecting fabrics respectively, and the glue spraying device sprays glue on the elastic strips. The rolling mechanism compositely connects the elastic strips to the upper surface of the first folding section and / or the second folding section of the water-collecting fabric on the corresponding side, and sprays glue on the upper surfaces of the third folding section, the fourth folding section and the inner section of the two water-collecting fabrics respectively; 4) Folding the third folding section, the fourth folding section and the inner section upwards by a folding device until the second folding section and the third folding section are relatively overlapped, the first folding section and the fourth folding section are relatively overlapped, and the inner section and the upper surface edge of the waterproof outer layer on the corresponding side are relatively overlapped, and the second folding section and the third folding section are compositely connected, the first folding section and the fourth folding section are compositely connected, and the inner section and the upper surface edge of the waterproof outer layer on the corresponding side are compositely connected by a rolling mechanism; 5) By means of the folding device, the second folding section and the third folding section of the two water-collecting cloths are folded downwards respectively until the second folding section is relatively overlapped below the first folding section; 6) Spray glue on the upper surface of the waterproof outer layer or the upper surface of the waterproof outer layer and the outer surface of the inner side sections of the two water-collecting cloths through a glue spraying device; 7) The absorbent cotton core inner layer of the diaper is conveyed by a conveying mechanism, and the lower surface of the absorbent cotton core inner layer is compositely connected to the upper surface of the waterproof outer layer by a rolling mechanism, or compositely connected to the upper surface of the waterproof outer layer and the two sides of the lower surface are compositely connected to the outer surface of the inner section of the water-collecting cloth on the corresponding side; 8) Spraying glue on the outer surface of the fourth folded section and the inner section of the two water-collecting cloths or on the outer surface of the fourth folded section and the upper surface edge of the inner layer of the absorbent core by means of a glue spraying device; 9) By means of a folding mechanism, the relatively overlapping first folding section, second folding section, third folding section and fourth folding section are folded upward until the fourth folding section is relatively overlapped above the edge of the upper surface of the inner layer of the absorbent core on the inner side section or the corresponding side, and the fourth folding section is compositely connected with the opposite surface of the upper surface of the inner layer of the absorbent core on the inner side section or the corresponding side by means of a rolling mechanism.

2. The production process of the integrated composite diaper according to claim 1, characterized in that: Before the two separated diaper water-collecting cloths are conveyed into the conveying mechanism in step 1), the two water-collecting cloths are combined into one and cut into two pieces by a cutting device, and the two separated water-collecting cloths are separated by a set distance by a corrector, and then step 1) is entered.

3. The production process of the integrated composite diaper according to claim 1 or 2, characterized in that: In the step 1), the distance between the two separated water-collecting cloths of the diaper is 80-100 mm, and the range of the glue spraying on the upper surface of the outer sections of the two water-collecting cloths is 7-9 mm from the edge of the outer sections.

Images