CN203513972U - Diversion material capable of being completely degraded - Google Patents
Diversion material capable of being completely degraded Download PDFInfo
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- CN203513972U CN203513972U CN201320454596.3U CN201320454596U CN203513972U CN 203513972 U CN203513972 U CN 203513972U CN 201320454596 U CN201320454596 U CN 201320454596U CN 203513972 U CN203513972 U CN 203513972U
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Abstract
The utility model relates to a diversion material capable of being completely degraded. The diversion material capable of being completely degraded is structurally composed of a bottom lining layer on the first layer, a first environment-friendly layer on the second layer, a second environment-friendly layer on the third layer and a third environment-friendly layer on the fourth layer, wherein the quantity of the bottom lining layer, the quantity of the first environment-friendly layer, the quantity of the second environment-friendly layer and the quantity of the third environment-friendly layer account for 3%-25% of the total quantity of the diversion material, 20%-35% of the total quantity of the diversion material, 25%-40% of the total quantity of the diversion material and 30%-45% of the total quantity of the diversion material respectively, the first environment-friendly layer can be communicated with liquid on the first layer, the second environment-friendly layer can be communicated with liquid on the second layer, and the third environment-friendly layer can be communicated with liquid on the third layer. Traditional adhesive solidifying materials are replaced by PLA/PLA composite fiber, no pollution is caused to the environment, and the service life of products is prolonged; in terms of product structure selection and product material selection, density gradient design is adopted, and for products with the same functions, good diversion performance is achieved, and the good reverse osmosis resistance effect is also achieved.
Description
Technical field
The utility model belongs to air lay Paper DryForming Technology field, is specifically related to a kind of novel structure, fully biodegradable and has quick liquid water conservancy diversion and the water conservancy diversion material of the reverse-osmosis-prevention performance of excellence.
Background technology
Air lay Paper DryForming Technology, is also called air lay nonwoven techniques, is different from wet papermaking technology, at technical process water not substantially, does not produce environmentally harmful waste water, and waste gas and waste residue etc., be a kind of production technology of comparatively environmental protection.By the dust-free paper (also have and be called expanded core) of this explained hereafter, be that to take the wood pulp fibre of several millimeters long be main raw material, by air lay and different consolidation method, produce.Utilize this technology, by the selection of raw material, the selection of proportioning and process route, can produce various different-thickness, different pliability, different hygroscopic material.
Air lay product is mainly used in disposable use and abandons paper for daily use product, as women sanitary articles, the absorbed layer of adult nursing incontinence article, guide layer etc. with wipe trial product etc.Its middling speed is oozed, fast guiding and reverse-osmosis-prevention are the key requests of women sanitary articles.Speed is oozed, and is mutual restriction between fast guiding and reverse-osmosis-prevention, and for example, good speed blends water conservancy diversion effect can make anti-the returning of liquid ooze hydraulic performance decline.
Speed is oozed and is referred to that liquid is of short duration in the time of product surface retention, within the extremely short time, liquid is transported to functional layer, keeps surface dry.The guide layer that present high-end use abandon in amenities adopts hot-wind nonwoven cloth and dust-free paper to combine use more, to reach better water conservancy diversion speed, oozes effect, and the product cost of this structure is higher, and production efficiency is also lower.
Along with the raising of environmental protection standard, the environmental-protecting performance of paper for daily use product is also had to more and more higher requirement.Acid fiber by polylactic (being called for short PLA) is the synthetic fiber of a kind of biology completely (or nature) degraded, be to adopt the starch materials such as reproducible corn, cassava, through fermentation obtain lactic acid, then aggregate into resin, by spinning, make fiber again, therefore claim again zein fiber.The most outstanding feature of PLA fiber is exactly to have good biocompatibility and biological degradability, is degraded into gradually in vivo CO2 and H2O, nontoxic to human body; Its discarded object is degraded into lactic acid, carbon dioxide and water automatically at occurring in nature, free from environmental pollution, and product can be generated starch by plant photosynthesis and PLA fiber does not produce noxious material when burning.
PLA fiber take lactic acid as raw material synthetic, and lactic acid is that in human body, itself is contained, so PLA fiber is perfectly safe for human body, Diazolidinyl Urea not, and there is antibacterial and antiseptic property, PLA fiber also has good and resilience of fine air permeability etc., and these property treated are all to abandon amenities water conservancy diversion for the production of disposable use, and diffusion material is needed.Continuous progress along with technology, people have developed PLA/PLA composite fibre, be skin-core structure composite fibre, sandwich layer is that the PLA fiber that fusing point is higher (is generally 170 ℃ of left and right, cortex is the PLA fiber that fusing point is lower (being generally 130 ℃ of left and right), and such composite fibre makes to replace in prior art conventional PE/PP or the composite fibre binding agent such as PE/PET that can not natural degradation becomes possibility.The cortex of low melting point has played other material of fusing bonding that (is generally 130～160 ℃) in conventional dust-free paper technique temperature range used, and the not fusing and play skeleton supporting role of sandwich layer high-melting fibre, makes product keep certain bulk.
Although what have in prior art has applied PLA fiber, be applied to disposable use and abandon and in the manufacture of amenities, still have some problems.As patent 202426733U discloses a kind of natural complete biodegradable disposable infant nappy, because having added the material that other can not natural degradation, as binding agent or water-absorbing resin etc., therefore can not be called 100% full natural degradation.
PLA fiber has good UV resistant performance in addition, and through scientific experiment, PLA fiber after 500 hours, still keeps 90% brute force through Exposure to Sunlight, and the Exposure to Sunlight of PET fiber is after 200 hours, and brute force is just down to 60% left and right, and PP fiber is UV resistant not also.And a large amount of composite fibres that use of existing manufacture dry-papermaking are as binding agent, widely used is PE/PP or PE/PET composite fibre, and UV resistant performance is poor.And application PLA/PLA composite fibre replaces conventional composite fibre stick, can make product have good UV resistant performance, product is more anti-aging, and powerful retentivity is in time good, the useful life that can extend product.
Utility model content
The purpose of this utility model is the defect that overcomes prior art, a kind of novel structure, fully biodegradable is provided and has quick liquid water conservancy diversion and the water conservancy diversion material of the reverse-osmosis-prevention performance of excellence.
This water conservancy diversion material mainly, by having the guide layer of fast guiding effect and playing the diffusion layer of rapid diffusion liquid, is the bottom lining layer of density maximum, by certain special construction design by completing in air-laid process.
Particularly, this water conservancy diversion material is divided into sandwich construction, for reaching desired function, various materials has been carried out to gradient design, is mainly the material gradient design of the design of different densities gradient and different absorbents.Wherein density gradient design be utilize capillarity make liquid by low-density layer to the automatic rapid flow of high density, fibrous material weave in has formed many little small ducts, play effect capillaceous, these small ducts import this layer material by capillarity fast by liquid, by the interlayer density contrast opposite sex, descending being arranged in order of size in small duct, according to capillarity, liquid can be automatically fast by low density area layer to high density rapid flow.
Simultaneously, in the selection of material, also considered the different gradient design of water absorbing properties of material, mainly be distributed in two-layer in, upper strata is selected elastomeric, is difficult for absorbent material, for low-density designs, mainly utilize capillarity water conservancy diversion liquid, lower floor adopts the easily material of water suction, and has maximum density and be positioned over bottom, the liquid that upper strata can be come absorbs rapidly and horizontal proliferation is opened, and the strong like this liquid that prevents returns and oozes to upper strata.Utilize the selection design of density gradient and different water-absorbing materials, make this water conservancy diversion material not only there is splendid guide performance, and also there is well anti-returning and ooze effect, and this material all select can Natural Degradation material, for real 100% can natural Wholly-degradable material.Design principle is different from normal prior art, shown in accompanying drawing 1 and accompanying drawing 2.
Concrete structure that can degradable water conservancy diversion material of the present utility model is as follows:
Ground floor is bottom lining layer, selects the good wadding paper (toilet paper) of absorbent, and the grammes per square metre of wadding paper can be selected 10-30g/m2, described bottom lining layer quantitatively account for the total quantitative 3-25% of this water conservancy diversion material;
The second layer is the first environmental protection layer, can with ground floor fluid connection, select PLA/PLA composite fibre and cellulose fibre, the proportion of PLA/PLA composite fibre and cellulose fibre be (20-50): (50-80), described the first environmental protection layer quantitatively account for always quantitative 20-35% of this water conservancy diversion material;
The 3rd layer is the second environmental protection layer, can with second layer fluid connection, select PLA/PLA composite fibre and cellulose fibre, the proportion of PLA/PLA composite fibre and cellulose fibre be (40-75): (35-60), described the second environmental protection layer quantitatively account for always quantitative 25-40% of this water conservancy diversion material;
The 4th layer is the 3rd environmental protection layer, can with the 3rd layer of fluid connection, select 100%PLA/PLA composite fibre, described the 3rd environmental protection layer quantitatively account for the total quantitative 30%-45% of this water conservancy diversion material; This layer material is only PLA/PLA composite fibre, can reach the design that upper strata is least density, is conducive to anti-returning and oozes.
Described gross weight is the gross weight of four layers of ground floors to the.
Two sides at this water conservancy diversion material can optionally spray water, and the quantity for spray of water is total quantitative 5-20%, makes this layer and adjacent layer produce Hydrogenbond, has strengthened interfacial bonding strength, is also beneficial in process of production the effect of depositing dust.
Described bottom lining layer material is to have the wadding paper (toilet paper) that absorbent is good, and grammes per square metre can be the string toilet paper of 10-30g/m2, will note there is certain gas permeability while generally selecting.
Described cellulose fibre comes from the natural plant fibres such as wood material completely, can complete biodegradable, it can be selected from through processing or the fiber of untreated Time of Fluff Slurry, softwood pulp, hardwood pulp, straw pulp, chemical pulp, chemi-mechanical pulp, heat engine slurry and composition thereof, its length is approximately 2-5mm, and has variform.
Described PLA/PLA composite fibre, its length is approximately 2-9mm, and fiber number is about 1.5-17 dtex, and has variform.
Of the present utility modelly can degradable water conservancy diversion material grammes per square metre be generally 50-300g/m2, thickness is 0.8～4mm, and density is generally less than 0.3g/cc.
The utility model product is selected good water absorption at bottom lining layer, the substrate that density is large (as toilet paper), the liquid that above each layer of water conservancy diversion come absorbs and spreads rapidly, simultaneously because which floor is hydrophobic material above, by lower floor to upper strata the difference because of density gradient, capillarity weakens successively, so these designs are all conducive to prevent that liquid from returning the surface that is seeped into this composite, make this composite have good anti-returning and oozes performance.The utility model product is improved successively by upper strata to bottom density, and this gradient is the weight by each layer, and selection realizes the precompressed selection of material different phase and big or small control in material proportion and technical process.
Another object of the present utility model is to provide manufactures the process that this can degradable water conservancy diversion material.The method is characterized in that and adopt advanced air-laid process, disposable this composite that completes, concrete steps are as follows:
(1) first toilet paper end liner coiled material is transported to shaping area with uncoiling machine and waits for subsequent handling process,
(2) substrate is carried continuously by a guipure for no reason in shaping area, after stable, PLA/PLA composite fibre and selectable cellulose fibre are sent to evenly mixing in first horizontal screen mesh type type head, by air forming and vacuum draw effect, make this mixture through the first moulded head and evenly shakedown drop on end liner;
Preferably, for obtaining good interlayer in conjunction with effect and forming density gradient, between the first moulded head and the second moulded head, designed pony press initial stage composite has been carried out to certain precompressed.Pressure about the guideline Wei Qian road of pressure is greater than the pressure of operation below, to form the difference of density gradient.
(3) then this composite bed is delivered to second shaping area, PLA/PLA composite fibre and selectable cellulose fibre are sent to evenly mixing in second horizontal screen mesh type moulded head, by air forming and vacuum draw paving, fall on ground floor and the second layer;
(4) then enter the 3rd shaping area, PLA/PLA composite fibre in the 3rd horizontal screen mesh type moulded head evenly mixed merga pass air forming and vacuum draw effect paving drop on before on which floor;
(5) then by the composite of above-mentioned formation by hot-pressing roller with further rock-steady structure;
(6) be transported to the first glue spraying operation optionally to spraying a certain amount of water above it, continue this composite to be sent in first drying box and to be heated, baking and curing;
(7) compound dust-free paper by the first drying box enter another group hot-pressing roller carry out after thickness adjustment, sent to continuously the second glue spraying operation its another side is sprayed to a certain amount of water, this design can make bottom lining layer and adjacent layer produce certain Hydrogenbond, improves interlayer adhesion;
(8) be then sent in second drying box and optional the 3rd drying box and again carry out baking and curing and form compound dust-free paper product; After compound dust-free paper product is cooling, by reel machine, carry out coiling.By demand, with cutting machine, cut into the product of desired different in width.Of the present utility model also relate to a kind of can the purposes of degradable water conservancy diversion material in disposable sanitary articles, this one-time formed composite plays the water conservancy diversion to liquid in disposable use abandon health product, diffusion and anti-ly return the effect of oozing.This is a kind of can also can be used for other liquid absorption aspect by degradable water conservancy diversion material, as adult-incontinence articles and baby paper diaper, and food pad (fish pad, meat pad etc.), pet pads etc.
Water conservancy diversion material of the present utility model has following beneficial effect:
(1) innovation of the utility model product is the degradable composite fibre of selecting reproducible string and being produced by reproducible plant amylum, by PLA/PLA composite fibre, replaced traditional adhesive solidification material (as PE/PP, PE/PET and emulsion etc.), PLA fiber not only has certain sucting wet air permeability, its catabolite is carbon dioxide and water, can be absorbed by plant photosynthesis, again form starch, during burning, do not produce toxic gas, environmentally safe is the new no-dust paper of environmental protection.
(2) utilize PLA fiber to there is good UV resistant performance, make product have good UV resistant performance, the useful life that has extended product.
(3) the utility model product all adopts density gradient design in the selection of structure and material, and the product of same function, not only has good guide performance relatively, also has well anti-returning and oozes effect.
(4) bottom lining layer of the utility model product sprays a certain amount of water, makes this layer and adjacent layer produce Hydrogenbond, has strengthened interfacial bonding strength, is also beneficial in process of production the effect of depositing dust.
(5) the utility model product adopts the production technology that the utility model relates to, and because using substrate, has greatly reduced in process of production paper end breakage rate (i.e. the frequency of disconnected paper), has improved the rate of coming into force.
Accompanying drawing explanation
Fig. 1 is prior art design of material principle schematic.
Fig. 2 is water conservancy diversion design of material principle schematic of the present utility model.
Fig. 3 is structural representation that can degradable water conservancy diversion material of the present utility model.
Fig. 4 is production technology schematic diagram that can degradable water conservancy diversion material of the present utility model.
Wherein: a1 is bottom lining layer, a2 is the first environmental protection layer, and a3 is the second environmental protection layer, and a4 is the second environmental protection layer; B1 is PLA/PLA fiber, and b2 is cellulose fibre.
The specific embodiment
Below in conjunction with embodiment, the utility model is further illustrated, but do not limit protection domain of the present utility model.
The method of testing of water conservancy diversion material of the present utility model is as follows:
1. thickness (normative reference: EDANA30.5-99)
Thickness: at two, measure between plate, the distance of measuring under certain pressure (0.5kPa), unit is mm.
Tester: digital display type Thickness measuring instrument.
Requirement according to different product samples, cuts sample, and on the edge of the specimen size of test and instrument, plate edge is not less than 5mm; Requirement is constant temperature and humidity (23 2 ℃ of scholars; Relative humidity 50% scholar 5%), under condition, balance sample is more than at least 4 hours.Balance can not be done in online detection in real time if, but when measuring, should record temperature and humidity at that time, compares for your guidance.
2. quantitative (normative reference: EDANA40.3-90)
Quantitative: the quality of unit are is quantitative (grammes per square metre) of sample, and unit is g/m2.
Determining instrument: electronic balance (being accurate to 0.001 gram), balance is provided with screen outward and prevents air-flow and the impact of other disturbing factors on balance.
Sample requires constant temperature and humidity (23 2 ℃ of scholars; Relative humidity 50% scholar 5%), under condition, balance sample is more than at least 4 hours.Online detection in real time, can not do balance, but when measuring, should record temperature and humidity at that time if, compares for your guidance.
Mensuration sample is placed on balance, after the stable reading of balance, records weight, with a gram expression.
Quantitatively (GSM)==A/B
Wherein: quantitative (grammes per square metre) of GSM-sample;
The weight of A-sample;
The area of B-sample.
3. tensile strength (normative reference: EDANA20.2-89)
Tensile strength: the sample of given size is subject to constant speed and is stretched to tension force required while rupturing.
Determining instrument: Zwick2.5-strength tester
Sample is cut into the size of 200mm x25.4mm, requires constant temperature and humidity (23 2 ℃ of scholars; Relative humidity 50 scholars 5%) under condition, balance sample is more than at least 4 hours, and online detection in real time, can not do balance, but when measuring, should write down temperature and humidity at that time if, compares for your guidance.
According to following test parameter, set test program:
Maximum measuring range: 100N
Test speed: 254mm/min
Folder distance: 51mm
Clamp: 5bar
4. liquid permeation rate (normative reference: EDANA150.5-02)
Liquid permeation rate: when 0.9% sodium chloride solution of 5m1 permeates sample, by passing through the time of circuit electric conductivity recording liquid, unit is second.
Determining instrument: Lister Liquid Penetrant instrument
5. anti-returning oozed performance (normative reference: EDANA150.5-02, ERT154.0-02)
Get certain size sample, with test funnel, add 5ml salt solution, timing simultaneously, after 5min, add again 5ml salt solution, from initial timing, count, after 10min, rapidly by the some layers of the filter paper of known quality (with the superiors' filter paper without imbibition till) be put into specimen surface, 1.2kg standard briquetting is pressed on filter paper simultaneously, restarts timing, during pressurization 1min, standard briquetting is removed, the weigh with scale quality of specimen surface filter paper, the weight of its increase is to return oozes value.This value is less, represents anti-ly to return that to ooze performance better.During test, can below sample, pad the absorbed layer of same specification to simulate the situation of water conservancy diversion material when reality is used.
The water conservancy diversion material of the present embodiment be always quantitatively about 150g/m2, thickness is about 2.2mm, its concrete raw material is as follows: toilet paper (wadding paper) selects golden red leaf company to produce, as NKA130 series, the 17gsm product that Huo You Havix company produces, cellulose fibre is chosen Weyerhauser NB416 or International Paper Supersoft M or Georgia Pacific4821,4822,4823 or its mixture, fiber is about 2-5mm; PLA/PLA composite fibre fiber number is 2.2dtex/6mm, and fibrocortex is about 130 ℃, and sandwich layer is about 160 ℃.
This water conservancy diversion material structure comprises four layers, referring to accompanying drawing 3, ground floor quantitatively to account for product total quantitative 11%, the second layer quantitatively account for product total quantitative 25%, total quantitative 31%, the four layer of the product that quantitatively accounts for of the 3rd layer quantitatively accounts for product total quantitative 33%.And the two sides at material sprays total quantitative 10% water in technical process.Shown in the following list 1 of the distribution of each component in each layer.
The water conservancy diversion material of the present embodiment be always quantitatively about 95g/m2, thickness is about 1.9mm, its concrete raw material is as follows: toilet paper (wadding paper) selects golden red leaf company to produce, as NKA130 series, the 17gsm product that Huo You Havix company produces, cellulose fibre is chosen Weyerhauser NB416 or International Paper Supersoft M or Georgia Pacific4821,4822,4823 or its mixture, fiber is about 2-5mm; PLA/PLA composite fibre fiber number is 2.2dtex/6mm, and fibrocortex is about 130 ℃, and sandwich layer is about 160 ℃.
This water conservancy diversion material structure comprises four layers, referring to accompanying drawing 3, ground floor quantitatively to account for product total quantitative 18%, the second layer quantitatively account for product total quantitative 22%, total quantitative 28%, the four layer of the product that quantitatively accounts for of the 3rd layer quantitatively accounts for product total quantitative 32%.And the two sides at material sprays total quantitative 10% water in technical process.Shown in the following list 2 of the distribution of each component in each layer.
The water conservancy diversion material of the present embodiment be always quantitatively about 80g/m2, thickness is about 1.3mm, its concrete raw material is as follows: toilet paper (wadding paper) selects golden red leaf company to produce, as NKA130 series, the 17gsm product that Huo You Havix company produces, cellulose fibre is chosen Weyerhauser NB416 or International Paper Supersoft M or Georgia Pacific4821,4822,4823 or its mixture, fiber is about 2-5mm; PLA/PLA composite fibre fiber number is 2.2dtex/6mm, and fibrocortex is about 130 ℃, and sandwich layer is about 160 ℃.
This water conservancy diversion material structure comprises four layers, referring to accompanying drawing 3, ground floor quantitatively to account for product total quantitative 16%, the second layer quantitatively account for product total quantitative 23%, total quantitative 29%, the four layer of the product that quantitatively accounts for of the 3rd layer quantitatively accounts for product total quantitative 32%.And the two sides at material sprays total quantitative 10% water in technical process.Shown in the following list 3 of the distribution of each component in each layer.
The preparation process of the water conservancy diversion material of above embodiment is as follows:
This water conservancy diversion material is realized on horizontal screen mesh type forming technique equipment.
As Fig. 4, first toilet paper end liner coiled material is transported to the subsequent handling processes such as shaping area with uncoiling machine 1, substrate is carried continuously by a guipure for no reason in shaping area, after stable, PLA/PLA composite fibre and cellulose fibre are sent to evenly mixing in first horizontal screen mesh type type head 2, by air forming and vacuum draw effect, make this mixture through the first moulded head and evenly shakedown drop on end liner, for obtaining good interlayer in conjunction with effect, with formation density gradient, between the first moulded head and the second moulded head, design 3 pairs of initial stage composites of pony press and carried out certain precompressed, then this composite bed is delivered to second shaping area, PLA/PLA composite fibre and selectable cellulose fibre are sent to evenly mixing in second horizontal screen mesh type moulded head 4, by air forming and vacuum draw paving, fall on ground floor and the second layer, then enter the 3rd shaping area, PLA/PLA composite fibre in the 3rd horizontal screen mesh type moulded head 5 evenly mixed merga pass air forming and vacuum draw effect paving drop on before on which floor, then the composite of above-mentioned formation is passed through to hot-pressing roller 6 with further rock-steady structure, be transported to the first glue spraying operation 7 optionally to spraying a certain amount of water above it, continuation is sent to this composite in first drying box 8 and is heated, baking and curing, compound dust-free paper enters another group hot-pressing roller 9 by the first drying box to carry out after thickness adjustment, sent to continuously the second glue spraying operation 10 its another side is sprayed to a certain amount of water, this design can make bottom lining layer and adjacent layer produce certain Hydrogenbond, improves interlayer adhesion, then be sent to and in second drying box 11 and the 3rd drying box 12, again carry out baking and curing and form compound dust-free paper product, after compound dust-free paper product is cooling, by reel machine 13, carry out coiling.By demand, with cutting machine, cut into the product of desired different in width.
Contrast test
The structure of existing product form general each layer quantitative for being uniformly distributed, as shown in table 4, the comparing result of every leading indicator of the utility model product and existing similar products is as shown in table 5.
By contrast, can find, the time of penetration of the utility model product shortens to some extent than existing product, and the water conservancy diversion speed of this water conservancy diversion material is described, returns to ooze value and also greatly reduce, and what this water conservancy diversion material was described anti-ly returns that to ooze effect fine.This advanced composite material (ACM) is used degradation material entirely simultaneously, abandons product greatly reduced the harm to environment for disposable use.
Above preferred embodiment of the present utility model is had been described in detail, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (5)
1. can a degradable water conservancy diversion material, it is characterized in that: its structure is composed as follows:
Ground floor is bottom lining layer, described bottom lining layer quantitatively account for the total quantitative 3-25% of this water conservancy diversion material;
The second layer is the first environmental protection layer, can with ground floor fluid connection, described the first environmental protection layer quantitatively account for the total quantitative 20-35% of this water conservancy diversion material;
The 3rd layer is the second environmental protection layer, can with second layer fluid connection, described the second environmental protection layer quantitatively account for the total quantitative 25-40% of this water conservancy diversion material;
The 4th layer is the 3rd environmental protection layer, can with the 3rd layer of fluid connection, described the 3rd environmental protection layer quantitatively account for the total quantitative 30%-45% of this water conservancy diversion material;
Described is quantitatively always the quantitative sum of four layers of ground floors to the.
According to claim 1 a kind of can degradable water conservancy diversion material, it is characterized in that: described bottom lining layer is the wadding paper that absorbent is good.
According to claim 1 a kind of can degradable water conservancy diversion material, it is characterized in that: described the 3rd environmental protection layer is selected 100%PLA/PLA composite fibre.
According to claim 1 a kind of can degradable water conservancy diversion material, it is characterized in that: on described two sides that can degradable water conservancy diversion material, optionally spray water, the quantity for spray of water is total quantitative 5-20%.
According to claim 3 a kind of can degradable water conservancy diversion material, it is characterized in that: the fiber that described PLA/PLA composite fibre selects free corn or tapioca raw material manually to make, its length is 2-9mm, fiber number is 1.5-17 dtex.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320454596.3U CN203513972U (en) | 2013-07-29 | 2013-07-29 | Diversion material capable of being completely degraded |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409941A (en) * | 2013-07-29 | 2013-11-27 | 博爱（中国）膨化芯材有限公司 | Degradable diversion material as well as preparation process and application of material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103409941A (en) * | 2013-07-29 | 2013-11-27 | 博爱（中国）膨化芯材有限公司 | Degradable diversion material as well as preparation process and application of material |
| CN103409941B (en) * | 2013-07-29 | 2016-04-13 | 博爱（中国）膨化芯材有限公司 | One can degradable fluid conducting material and preparation technology thereof and application |
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