CN115813666A - Production process of urine absorption anti-lump coating core layer - Google Patents

Production process of urine absorption anti-lump coating core layer Download PDF

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Publication number
CN115813666A
CN115813666A CN202211388835.XA CN202211388835A CN115813666A CN 115813666 A CN115813666 A CN 115813666A CN 202211388835 A CN202211388835 A CN 202211388835A CN 115813666 A CN115813666 A CN 115813666A
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core layer
absorption
urine
water
paper
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马雪侠
杨飞飞
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Anhui Shuyuan Maternal And Infant Product Co ltd
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Anhui Shuyuan Maternal And Infant Product Co ltd
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Abstract

The invention discloses a production process of a urine absorption anti-lump coating core layer, and relates to the technical field of urine absorption core material processing. Ammonia is the main component in fresh urine, and acts to form high alkaline substances, so as to stimulate skin and cause diaper rash. The seaweed is crushed and then neutralized to reduce the damage of urine to the skin. The absorbent core has the advantages of thin structure, no lump after absorption and no fault, and can replace the traditional absorbent core structure of fluff pulp mixed SAP. The expansion can take place immediately after SAP resin absorbs the urine, can not form closely continuous gel structure, and panty-shape diapers can not produce the bow-tie phenomenon, dredges the urine and oozes down, promotes the core to absorb the diffusion to the urine, reduces the urine leakage risk.

Description

Production process of urine absorption anti-lump cladding core layer
Technical Field
The invention belongs to the technical field of urine absorption core material processing, and particularly relates to a production process of a urine absorption anti-lump coated core layer.
Background
The fluff pulp is a wood pulp fiber obtained by bleaching coniferous wood or broadleaf wood and extracting an organic solvent, and the wood pulp fiber is widely applied to various sanitary product middle nets as a liquid absorption medium. Chemically absorbent fluff pulp, which is different from SAP, is physically absorbed by the interstitial spaces of the fibers. The absorption effect of the absorbent core can be achieved by adjusting the ratio of SAP and fluff pulp. The addition amount of fluff pulp in the existing absorption core body is in a trend of gradually reducing. This aspect is related to the scarcity of Chinese needlebush resources. According to the estimation of relevant departments, in the industry of absorptive sanitary products in China, the fluff pulp is mostly quite rare and has low quality by taking imported pulp as the main country. On the other hand can thick heavy stick not conform to present consumer's demand to frivolous panty-shape diapers with traditional fluff pulp absorb core after absorbing urine relevant. CN201811272090.4 a quick absorption diaper and the like disclose an absorption core using fluff pulp. At present, with the continuous aggravation of the aging of society, the market prospect of the adult paper diaper is wide, the adult urine volume is large, the alkalinity is slightly high, the paper diaper is easy to permeate and lump, the serious incontinence conditions are more, and the using effect of the paper diaper is poor. At present, the absorption core body of the domestic paper diaper mostly adopts the composition of porous fluffy non-woven materials and dust-free paper to replace fluff pulp, so that the lightness and thinness of the paper diaper are realized, but the completeness of the absorption core body after liquid absorption is influenced by excessively replacing the fluff pulp. The absorption core layer can rapidly absorb urine permeated by the diversion layer and store the urine, so that the urine is prevented from leaking to pollute clothes. CN201710869316.8 a method for preparing a diaper discloses that an intermediate drug layer contains a plurality of drugs, but the main components of an absorption core layer are high molecular water-absorbent resin, SAP, fluff pulp and the like for short, and a layer of non-woven coating material is coated outside the absorption core layer. The fluff pulp in the absorption core layer has a good urine diffusion absorption function, and meanwhile, the strength of the absorption core layer can be enhanced. And by a large margin, the amount of SAP resin is increased, the core body can expand immediately after absorbing urine to form a closely connected gel structure, and the paper diaper can generate a lump phenomenon to block the urine from seeping downwards, so that the core body can not absorb and diffuse the urine, and urine leakage risks are caused. Some manufacturers replace fluff pulp with paper pulp to reduce the cost, but the power consumption is increased, and the physical properties such as the absorbency of the product are also affected. Some small enterprises even use waste materials to manufacture the sanitary towel core layer, which can endanger health and form improper competition for enterprises in the same row. With the trend toward ultra-thinness of sanitary articles, the amount of SAP in the absorbent core layer is increasing. However, the use of petroleum-based SAPs instead of fluff pulp does not reduce the environmental impact of the product because SAPs consume a large amount of energy in the manufacturing process and are not biodegradable. The production process of the urine absorption anti-lump coated core layer is urgently needed to be developed by the technical personnel in the field so as to meet the existing application market and performance requirements.
Disclosure of Invention
In view of the above, the invention provides a production process of a urine absorbing anti-lump coating core layer.
A production process of a urine absorption anti-lump coating core layer is characterized in that the urine absorption anti-lump coating core layer is prepared by sequentially overlapping and rolling first water-absorbent resin paper, a first absorption core layer, fluffy non-woven fabric, a second absorption core layer and second water-absorbent paper, wherein the absorption core layer is a mixture of seaweed powder and super absorbent resin, the first water-absorbent paper is the same as the second water-absorbent paper, and the first absorption core layer is the same as the second absorption core layer; the production process of the urine absorption anti-lump coating core layer specifically comprises the following steps: (1) preparing water-absorbent resin paper: applying a layer of structural hot melt adhesive on the surface of the water absorption paper, wherein the adhesive application amount is 6 to 19g/m 2 The sizing temperature is 130 to 150 ℃, then the super absorbent resin is uniformly sprayed and adhered on the absorbent paper to prepare the absorbent resin paper, and the spraying amount is 5 to 10g/m 2 (ii) a (2) preparing an absorption core layer: crushing the hypanthus superbus into hypanthus superbus powder by using a saw blade type high-speed crusher, metering the hypanthus superbus powder and a high water absorption resin according to the weight ratio of 5: 4 to 7, and uniformly mixing the powder and the high water absorption resin in a forming drum to obtain the hypanthus superbus powder;
and saw blade type high-speed crushing is carried out to ensure the fiber length of the seaweed and the water absorption performance of the product.
(3) Preparing a urine absorption anti-lump coating core layer: sequentially coating the first water-absorbent resin paper, the first absorption core layer, the second water-absorbent paper and the hot-air fluffy non-woven fabric, and applying hot melt adhesive for bonding, wherein the adhesive application amount is 18 to 24g/m 2 And (3) applying hot melt adhesive at the temperature of 130-150 ℃, bonding, compacting, cutting to prepare an absorption core layer, placing the absorption core layer in a calender, and carrying out calendering molding, wherein the roll temperature is 110-130 ℃, so as to prepare the urine absorption anti-lump coating core layer.
Further, the super absorbent resin is one or more of polyacrylate super absorbent resin WHS-938, WHS-918 and WHS-828.
The seaweed is called the hypanthium, the branch is long and is yellow green or yellow white, and the epidermal cells of the stem and the branch have a plurality of threads and water pores.
The life of the seaweed is strong, and when the rainwater is sufficient, the seaweed looks like spring bamboo shoot and is used in mountains and all fields. The key points of good integrity and high strength of the liquid absorption layer pad of the seaweed meal.
The indexes for evaluating the performance of the paper diaper are various, and the performance indexes such as absorptivity, rewet amount, saturated absorption amount and the like directly influence the service performance of the paper diaper.
The rewet is the mass of test solution that returns to the face layer under a certain pressure after the core has absorbed a certain amount of test solution.
The leakage amount is the quality of the test solution which permeates through the leak-proof basement membrane under a certain pressure after the test sample absorbs a certain amount of the test solution. Absorption speed: the time required for the sample to absorb a certain amount of the test solution.
Further, the content of the seaweed powder in the step (2) is 65.4 to 66.8 percent when the seaweed powder is sieved by a sieve with a mesh of more than 30, 23.0 to 25.2 percent when the seaweed powder is sieved by a sieve with a mesh of 30 to 200, and 8.0 to 11.6 percent when the seaweed powder is sieved by a sieve with a mesh of 200.
Further, the fluffy non-woven fabric is 15 to 23g/m 2 The hot air nonwoven fabric of (1).
Further, the gram weight of the water absorbent paper is 0.08 to 0.095g/m 2 The water absorption capacity is 0.19 to 0.23g/cm 2 The water-absorbing paper of (1),
the invention has the beneficial effects that:
the seaweed can store more than 20 to 25 times of water by weight of the seaweed after living or death, has strong urine absorption capacity, and can absorb and store a large amount of water rapidly by developed large transparent cells. In addition to the particularity of the cell structure, the hypanthon powder can form a capillary phenomenon, so that urine is retained and contained. Ammonia is the main component in fresh urine, and acts to form high alkaline substances, so as to stimulate skin and cause diaper rash. The seaweed is crushed and then neutralized to reduce the damage of urine to the skin. After fresh alkaline urine soaks the anti-lump coating core layer, the pH value is recovered to be neutral at the temperature of body temperature. The cost is reduced by using the sea weed instead of fluff pulp to manufacture the anti-lumping coating core layer, the sea weed with low price reaches several thousand of money, and the price of the fluff pulp is several times or tens of times of the price of the sea weed. The urine absorption anti-lump coating core layer disclosed by the invention has multiple lasting hydrophilic and liquid-permeable functions.
Compared with the prior art, the invention has the following advantages:
at present, the cost price of the fluff pulp is repeatedly and newly created, and the market also faces the production capacity challenge. The urine absorption anti-lump coating core layer disclosed by the invention is a composite absorption core body consisting of the hot air fluffy non-woven fabric, the SAP, the seaweed and the hot melt adhesive, has the advantages of thin structure, no lump after absorption and no fault, and can replace the traditional absorption core body structure of fluff pulp mixed with the SAP. The expansion can take place immediately after SAP resin absorbs the urine, can not form closely continuous gel structure, and panty-shape diapers can not produce the bow-tie phenomenon, dredges the urine and oozes down, promotes the core to absorb the diffusion to the urine, reduces the urine leakage risk.
Detailed Description
Example 1
The production process of the urine absorption anti-lump coating core layer comprises the following steps: the production method comprises the steps of preparing first water-absorbent resin paper, a first absorption core layer, fluffy non-woven fabric, a second absorption core layer and second water-absorbent resin paper by overlapping and calendaring, wherein in the first step, the first absorption core layer and the second absorption core layer are both mixtures of seaweed powder and super absorbent resin, the seaweed is crushed into the seaweed powder in a saw blade type high-speed crusher, the seaweed powder and the super absorbent resin are weighed according to the weight ratio of 5: 7 and then are placed in a forming drum to be uniformly mixed, and the seaweed powder and the super absorbent resin are rolled and compacted by double pressing, wherein the roll temperature is 110 ℃, so that the absorption core layer is prepared, and the super absorbent resin is polyacrylate super absorbent resin WHS-828; step two, preparation of water-absorbent resin paper: applying a layer of good core hot melt adhesive on the surface of the absorbent paper, wherein the gram weight of the absorbent paper is 0.095g/m 2 The water absorption capacity was 0.19g/cm 2 The water-absorbent paper of (2) has a sizing amount of 6g/m 2 The sizing temperature is 130 ℃, and then the super absorbent resin is uniformly sprayed and adhered on the absorbent paper to prepare the absorbent resin paper, wherein the spraying amount is 10g/m 2 (ii) a The first absorbent resin paper and the second absorbent paper are the same in resin, and the first absorbent core layer and the second absorbent core layer are the same; step three, preparing a urine absorbing anti-lump coating core layer: sequentially coating the first water-absorbent resin paper, the first absorption core layer, the second water-absorbent paper and the hot air fluffy non-woven fabric, wherein the fluffy non-woven fabric is 23g/m 2 OfMoistening the hot air non-woven fabric, applying core body hot melt adhesive for bonding, wherein the adhesive applying amount is 24g/m 2 Applying core body hot melt adhesive at the temperature of 150 ℃, bonding, compacting and cutting to prepare an absorption core layer, placing the absorption core layer in a calender, and calendering and molding, wherein the roller temperature is 130 ℃, the urine absorption anti-lump coating core layer with the thickness of 3.28mm is prepared, dried sea weeds are artificially planted by Dushan spring and Hippocampus Hippocastellated agriculture company, the screening of the sea weeds with the powder of more than 30 meshes accounts for 66 percent, 8 percent, the screening of 30-200 meshes accounts for 25.2 percent, and the screening of 200 meshes accounts for 8.0 percent.
The product meets the technical requirements of the product rewet volume, absorption speed, rewet volume and absorption rate of the adult diaper with severe incontinence, and other indexes also meet the requirements of GB/T28004.2-2021.
Example 2
The production process of the urine absorption anti-lump coating core layer comprises the following steps: the paper is prepared by superposing and rolling first water-absorbent resin paper, a first absorption core layer, fluffy non-woven fabric, a second absorption core layer and second water-absorbent resin paper, and specifically comprises the following steps: firstly, the absorption core layer is a mixture of seaweed powder and super absorbent resin, the seaweed is crushed into the seaweed powder by a saw blade type high-speed crusher, the seaweed powder and the super absorbent resin are weighed according to the weight ratio of 5: 6 and then are placed in a forming drum to be uniformly mixed, and the absorption core layer is obtained, wherein the super absorbent resin is polyacrylate super absorbent resin WHS-918; step two, preparation of water-absorbent resin paper: applying a layer of structure hot melt adhesive on the surface of the absorbent paper and honour SA7218U, wherein the glue application amount is 12g/m 2 The sizing temperature is 140 ℃, and then the super absorbent resin is uniformly sprayed and adhered on the absorbent paper, wherein the gram weight of the absorbent paper is 0.08g/m 2 The water absorption capacity was 0.19g/cm 2 The water-absorbent paper is made into water-absorbent resin paper, and the spraying amount is 8g/m 2 (ii) a The first water-absorbent resin paper is the same as the second water-absorbent resin paper, and the first absorption core layer is the same as the second absorption core layer; step three, preparing a urine absorbing anti-lump coating core layer: sequentially coating the first water-absorbent resin paper, the first absorption core layer, the second water-absorbent paper and the hot air fluffy non-woven fabric, wherein the fluffy non-woven fabric is 18g/m 2 The De run hot-air non-woven fabric is bonded by applying hot melt adhesive Rongjia SA7218U at the temperature of 140 ℃ and the glue application amount of 20g/m 2 Compacting, compacting,Cutting to obtain an absorption core layer, placing the absorption core layer in a calender, and calendering to obtain a 3.28mm thick urine absorption anti-lump coated core layer at the roll temperature of 120 ℃, and artificially planting the seaweed meal in Yuxiang water moss company. The content of the seaweed powder is 66.2 percent when the seaweed powder is sieved by a sieve with more than 30 meshes, 23.8 percent when the seaweed powder is sieved by a sieve with 30 meshes to 200 meshes, and 10 percent when the seaweed powder is sieved by a sieve with 200 meshes.
The product meets the technical requirements of the product rewet volume, absorption speed, rewet volume and absorption rate of the adult diaper with severe incontinence, and other indexes also meet the requirements of GB/T28004, 2-2021.
Example 3
The production process of the urine absorbing anti-lump coating core layer comprises the steps of superposing and calendaring a first water-absorbent resin paper, a first absorbing core layer, a fluffy non-woven fabric, a second absorbing core layer and a second water-absorbent resin paper to obtain the urine absorbing anti-lump coating core layer, wherein the absorbing core layer is a mixture of seaweed powder and super absorbent resin, the seaweed is ground into the seaweed powder by a saw blade type high-speed grinder, the seaweed powder and the super absorbent resin are measured according to the weight ratio of 5: 4 and then are placed in a forming drum to be uniformly mixed to obtain the urine absorbing anti-lump coating core layer, and the super absorbent resin is polyacrylate super absorbent resin WHS-938; preparation of water-absorbent resin paper: applying a layer of structural hot melt adhesive Wanli 3# J hot melt adhesive on the surface of the absorbent paper, wherein the adhesive application amount is 19g/m 2 The sizing temperature is 130 ℃, and then the super absorbent resin is uniformly sprayed and adhered on the absorbent paper, wherein the gram weight of the absorbent paper is 0.09g/m 2 The water absorption capacity is 0.2g/cm 2 The water-absorbent resin paper is made of the water-absorbent resin paper, and the spraying amount is 5g/m 2 (ii) a The first water-absorbent resin paper is the same as the second water-absorbent resin paper, and the first absorption core layer is the same as the second absorption core layer; (3) preparing a urine absorbing anti-lump coating core layer: sequentially coating the first water-absorbent resin paper, the first absorption core layer, the second water-absorbent paper and the hot air fluffy non-woven fabric, wherein the fluffy non-woven fabric is 15g/m 2 The de run hot air non-woven fabric is bonded by applying a ten thousand force 3# J hot melt adhesive, the temperature of the hot melt adhesive is 130 ℃, and the adhesive applying amount is 18g/m 2 Compacting, cutting to obtain absorption core layer, calendering at 110 deg.C to obtain urine absorption core layer with thickness of 3.28mm, and manually planting seaThe dried flower and grass powder is more than 30 meshes of 65.4 percent by screening, 23.0 percent by screening with 30-200 meshes of 200-mesh screening and 11.6 percent by screening with 200 meshes of 200-mesh screening.
The product meets the technical requirements of the product rewet volume, absorption speed, rewet volume and absorption rate of the adult diaper with severe incontinence, and other indexes also meet the requirements of GB/T28004, 2-2021.
Adult diapers were prepared from the urine absorbing anti-blocking coated core layers of examples 1 to 3 and the performance test results are shown in table 1.
Table 1 examples 1 to 3 performance test results of adult diapers prepared by using urine absorption anti-lump coated core layers
Figure 743511DEST_PATH_IMAGE002
Note: reference GB/T28004,2-2021 panty-shape diapers part 2: adult diaper. On an XE-2008-SV production line, the production speed is 500 pieces/min, the air pressure is 0,6Mpa, the adult diaper with the urine absorbing anti-sticking coating core layer of the examples 1 to 3 is produced, and the constant-shininess is 23g/m 2 Hot-blast fluffy cloth and Chinese height RFD18g/m 2 The flow-guiding layer hot air non-woven fabric is applied with glue and compounded, and the adhesive application amount of the Wanli 3# J hot melt adhesive is 22g/m 2 Applying water-repellent three-dimensional protecting enclosure and left and right pastes on the surface layer at the gluing temperature of 130 ℃ to prepare a surface layer material; at the same time, the constant blaze is 23g/m 2 20g/m hot-air non-woven fabric for surface layer 2 The composite basement membrane is prepared by online compounding a polyethylene breathable cast membrane, a front waist patch and an elastic waistline, wherein the hot melt adhesive is Rongjia SA7218U, and the spiral spraying glue application amount is 4.5g/m 2 And gluing at 135 ℃, compounding, compacting and cutting a surface layer material, a urine absorption anti-lump coating core layer and a composite bottom film on line to obtain the finished adult paper diaper.

Claims (5)

1. The production process of the urine absorption anti-lump cladding core layer is characterized in that the urine absorption anti-lump cladding core layer is prepared by sequentially overlapping and rolling first water-absorbent resin paper, a first absorption core layer, fluffy non-woven fabric, a second absorption core layer and second water-absorbent paper, wherein the absorption core layer is prepared from seaweed powder and high-density seaweed powderThe mixture of water-absorbent resins, wherein the first water-absorbent resin paper is the same as the second water-absorbent resin paper, and the first absorption core layer is the same as the second absorption core layer; the production process of the urine absorption anti-lump coating core layer specifically comprises the following steps: (1) preparing water-absorbent resin paper: applying a layer of structural hot melt adhesive on the surface of the absorbent paper, wherein the adhesive application amount is 6-19g/m 2 The sizing temperature is 130 to 150 ℃, then the super absorbent resin is uniformly sprayed and adhered on the water absorbent paper to prepare the water absorbent resin paper, and the spraying amount is 5 to 10g/m 2 (ii) a (2) preparing an absorption core layer: pulverizing the seaweed into seaweed powder by a pulverizer, metering the seaweed powder and the super absorbent resin according to the weight ratio of 5: 4 to 7, and uniformly mixing in a forming drum to obtain the seaweed powder; (3) preparing a urine absorbing anti-lump coating core layer: sequentially coating the first water-absorbent resin paper, the first absorption core layer, the second water-absorbent resin paper and the fluffy non-woven fabric, applying core body hot melt adhesive for bonding, wherein the adhesive application amount is 18 to 24g/m 2 And (3) applying hot melt adhesive at the temperature of 130-150 ℃, bonding, compacting, cutting to prepare an absorption core layer, placing the absorption core layer in a calender, and carrying out calendering molding, wherein the roll temperature is 110-130 ℃, so as to prepare the urine absorption anti-lump coating core layer.
2. The process for producing the urine absorbing anti-lump coated core layer according to claim 1, wherein the super absorbent resin is one or more of polyacrylate super absorbent resins WHS-938, WHS-918 and WHS-828.
3. The production process of the urine absorbing anti-lump coated core layer according to claim 1, wherein the amount of the seaweed meal sieved by the step (2) is 65.4 to 66.8 percent larger than 30 meshes, 23.0 to 25.2 percent sieved by the sieve of 30 to 200 meshes, and 8.0 to 11.6 percent sieved by the sieve of 200 meshes.
4. The production process of the urine absorbing anti-lump coated core layer according to claim 1, wherein the fluffy non-woven fabric (3) is 15 to 23g/m 2 The hot air nonwoven fabric of (1).
5. The method of claim 1The production process of the urine absorption anti-lump coated core layer is characterized in that the absorbent paper in the step (1) is 0.08 to 0.095g/m in gram weight 2、 The water absorption capacity is 0.19 to 0.23g/cm 2 The absorbent paper of (1).
CN202211388835.XA 2022-11-08 2022-11-08 Production process of urine absorption anti-lump coating core layer Pending CN115813666A (en)

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CN117017626A (en) * 2023-08-12 2023-11-10 广东美登新材料科技有限公司 AB combined core for adult paper diaper and preparation method thereof
CN117017626B (en) * 2023-08-12 2024-05-24 广东美登新材料科技有限公司 AB combined core for adult paper diaper and preparation method thereof

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Application publication date: 20230321