CN108822406A - A kind of production technology and its recovery method of the Polywoven Bag for the quick prompt that makes moist - Google Patents
A kind of production technology and its recovery method of the Polywoven Bag for the quick prompt that makes moist Download PDFInfo
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- CN108822406A CN108822406A CN201810675680.5A CN201810675680A CN108822406A CN 108822406 A CN108822406 A CN 108822406A CN 201810675680 A CN201810675680 A CN 201810675680A CN 108822406 A CN108822406 A CN 108822406A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Absorbent Articles And Supports Therefor (AREA)
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Abstract
The present invention provides the production technology and its recovery method of a kind of Polywoven Bag of quick prompt that makes moist, and the Polywoven Bag of the dampness quick prompt successively includes internal layer woven bag, dampness prompt outer layer and transparent waterproof layer from inside to outside, includes the following steps:S1:The silica gel that changes colour prepares;S2:Drying is blended;S3:Preparation dampness prompt outer layer:By PP GRANULES, EVA, clarifier, Ni (NO3)2·2C6H12N4·10H2O Novel color-changing silica gel particle is added heating in coextrusion blow film machine, is blow molded into cylinder-shaped dampness prompt outer layer after melting;S4:Knitting process;S5:Bag making.The purpose of the present invention is to provide the production technologies and its recovery method of a kind of Polywoven Bag of quick prompt that makes moist, it is intended to dampness state and the woven bag dampness position of energy intuitive judgment woven bag interior items, and recoverable, the novel woven bag of save the cost.
Description
Technical field
The present invention relates to Polywoven Bag processing technique field, in particular to a kind of dampness prompts rapid Polywoven Bag
Production technology and its recovery method.
Background technique
Polywoven Bag is to form using polypropylene as primary raw material by extrusion, wire drawing, then through weaving, braiding, bag making.
Polypropylene is a kind of translucent, semi-crystal thermoplastic, has high intensity, good insulating, water absorption rate low, hot with regard to shape temperature
High, the features such as density is small, crystallinity is high, it is formed into the primary raw material of woven bag.Woven bag, which is widely used in, contains chemicals, grain
The products such as food, flour, cement.Existing Polywoven Bag only play splendid attire effect, when the article of splendid attire becomes damp and rotten without
Woven bag can only be opened by containing article by being judged outside woven bag and judge whether article makes moist by method, moreover,
Can not judge in woven bag contain article dampness position, have the article top of some splendid attires do not make moist but bottom make moist, beat
Upper articles damp degree can only be judged by opening woven bag, can not judge the damp degree that article is contained in woven bag lower part.
In order to realize dampness state and the woven bag dampness position of energy intuitive judgment woven bag interior items, need to research and develop one
Kind new Polywoven Bag and its production technology.
Summary of the invention
The purpose of the present invention is to provide a kind of production technology of the Polywoven Bag of quick prompt that makes moist and its recycling sides
Method, it is intended to which the dampness state of energy intuitive judgment woven bag interior items and woven bag dampness position, and recoverable are saved
The novel woven bag of cost.
Above-mentioned technical purpose of the invention technical scheme is that:
It is a kind of make moist quick prompt Polywoven Bag production technology, it is described dampness quick prompt Polywoven Bag by
It is interior successively to prompt outer layer and transparent waterproof layer including internal layer woven bag, dampness to outer, include the following steps:
S1:The silica gel that changes colour prepares:By orange no cobalt discoloration silica gel and Ni (NO3)2·2C6H12N4·10H2O Novel color-changing silicon
Glue pulverizes into particle, and sieving prepares respectively;
S2:Drying is blended:By virgin material polypropylene and reclaimed materials polypropylene, filling master batch, auxiliary agent, orange no cobalt discoloration silica gel
Particle, which is put into, stirs drying in dry blender, material of the blending after dry is put into extruder, is extruded as film, water is cooling
Afterwards, be cut into embryo silk with blade, and be stretched to form flat filament by drying-plate, flat filament after thermal finalization by receive silk machine receipts silk at
Volume;
S3:Preparation dampness prompt outer layer:By PP GRANULES, EVA, clarifier, Ni (NO3)2·2C6H12N4·10H2O is new
Type discoloration silica gel particle is added heating in coextrusion blow film machine, is blow molded into cylinder-shaped dampness prompt outer layer after melting;
S4:Knitting process:By coiled flat filament by circular weaving machine at columnar internal layer woven bag, by examining, inspection
After testing qualification, dampness prompt outer layer jacket is wound outside internal layer woven bag, then through winder, is formed and is bonded using compounding machine
The good woven bag with dampness prompt outer layer;
S5:Bag making:The woven bag with dampness prompt outer layer bonded that step S4 is prepared coats transparent high score outside
Sub- waterproofing agent, after dry and hard formation transparent waterproof layer, by cutting and sewing, being prepared into finished product has the plastics of dampness quick prompt to compile
Knit bag.
As a further improvement of the present invention, raw material components are virgin material polypropylene 40%-70%, recycling poly- third in step S2
Alkene 10%-20%, filling master batch 5%-10%, auxiliary agent 1%-5%, orange discoloration silica gel particle 14%-25%.
As a further improvement of the present invention, raw material components are polypropylene 45%-65%, EVA15%- in step S3
25%, clarifier 0.1%-0.5%, Ni (NO3)2·2C6H12N4·10H2O Novel color-changing silica gel particle 19.9%-29.5%.
As a further improvement of the present invention, no cobalt discoloration silica gel and Ni (NO3)2·2C6H12N4·10H2O Novel color-changing
The partial size of silica gel particle is 100-200 mesh.
The present invention also provides a kind of recovery methods of the Polywoven Bag of quick prompt that makes moist, and include the following steps:
A. sort out:Classify to the discarded woven bag of recycling, be divided into I type, II type and III type, I type corresponds to outer layer part
Discoloration is yellow green, and II type corresponds to woven bag color change interval area green greater than yellow green, and III type corresponds to woven bag color change interval
Area yellow green is more than or equal to green;
b:Classification processing:The discoloration rent of I type woven bag is carried out coating transparent polymer after drying processing again anti-
Aqua dries stand-by;II type woven bag is put into baker and is dried, is dried stand-by;III type woven bag is crushed, is heated to
400 DEG C, filtering obtains filtrate A and filter residue B, and filtrate A is put into extruder, produces recycling PP GRANULES, molten by butanone
After liquid washing is dry, investment step S2 is mixed with virgin material PP GRANULES to be carried out continuing to produce, and hydrogen-oxygen will be housed in filter residue B collection
In the reaction kettle for changing sodium solution, active carbon, 300-350 DEG C is controlled reaction 3-5 hours, Ni (NO is used in concentration, cooling respectively3)2·
2C6H12N4·10H2O solution and crystal violet indicator solution colour to form Ni (NO3)2·2C6H12N4·10H2O Novel color-changing silicon
Glue and orange no cobalt discoloration silica gel, are produced subsequently into raw material is re-used as in step S2.
Compared with prior art, the invention has the advantages that:
1. the present invention is provided with two layers dampness prompt layer, can judge from obvious discoloration external film damage and water inflow or
Internal wetted is rotten.
2. the present invention two layers dampness prompt layer is evenly distributed with discoloration silica gel, variation color difference, internal discoloration silica gel by
Tide becomes green, and outer layer discoloration silica gel water inlet becomes yellow green, and the woven bag of dampness prompt of the invention compares single layer indicator
Setting, can more accurately determine woven bag internal wetted or external dampness, single layer indicator discoloration can not judge be
Outside dampness water inlet or internal wetted discoloration, as long as existing technical staff's single layer indicator discoloration, is judged as substance in bag
Dampness handles substance in bag in time, and actual capabilities are only to be made moist to change colour by bag external contact water, and water does not diffuse in bag
Substance, handling substance in bag at this time will cause false judgment and processing, result in waste of resources, and the double-deck indicating effect of the present invention is logical
The combination for crossing different discoloration areas can obviously determine that woven bag is by outside water inlet or internal wetted, if intake into outside
Outside drying is then mended into brush waterproof layer in breakage in time, resource has greatly been saved, has extended the service life of woven bag.
3. the present invention is evenly distributed with discoloration silica gel using two layers dampness prompt layer, changes colour sensitive, easily determine, it is local by
Tide discoloration, that is, can determine whether woven bag internal wetted position, isolate the position that do not make moist, stop loss in time, save enterprise's production consumption.
4. the method for substance in the different corresponding different processing bags of dampness colour developing of the invention, two layers of use mention
Showing function not is only to play a part of single dampness prompt, and be bound together and play a part of mutually cooperateing with promoting,
When only seeing woven bag sub-fraction becomes yellow green, judgement only has the bursting outside water inlet of part, carries out to rent
Brush waterproof layer is mended in drying;When woven bag internal layer locally becomes green, when outer layer largely becomes yellow green, it can be determined that
It is that bursting outside infiltration is more, is just seeped into inside woven bag, shift the article that do not make moist, the woven bag of rupture is crushed, reacted back
Harvest raw material again preparation cost invention dampness quick prompt Polywoven Bag, it is energy saving, save production cost;When internal layer is compiled
Knitting bag becomes green, and when outer layer locally becomes yellow green, judges that inner sealing is not carried out or substance becomes damp and rotten generation
Water, handles woven bag inner material in time, and drying woven bag can reuse.
5. the present invention can not only play a part of discoloration instruction, another party using discoloration silica gel, discoloration silica gel
Face a degree of can also play a part of desiccant, can while changing colour instruction a degree of moisture absorption, prevent from containing object
Product become damp and rotten, and the silica gel that changes colour can repeat to utilize with color indicator by drying, and environmental protection economizes on resources, the present invention
By the way that the silica gel in discarded woven bag is filtered processing, not melted in 400 DEG C of at a temperature of silica gel, stability is high, and poly- third
Alkene is molten, effectively silica gel particle can be made to separate with polypropylene by filtering, then reaction generates waterglass again, generate silica gel
Afterwards, immersion liquid is prepared into the discoloration silica gel of needs, and the woven bag of discarded breakage can be classified and recycled again, it is dirty to reduce environment
Dye improves the producing level of woven bag resource.
6. evenly dispersed formation silica gel-is poly- in the form of molecule in present invention discoloration silica gel microparticle filling polypropylene
" island structure " of propylene, significantly improves the anti-cracking performance of polypropylene material, and original mechanical performance, heat resistance
It is unaffected with electric property, improve the stretch-proof tear resistance and wear-resisting property of woven bag.
7. polypropylene discoloration silica gel of the invention is difficult to dissolve in organic solvent, therefore the silica gel that changes colour is separated, is filtered dry excessively
It is recoverable after dry, it is with good stability, and when woven bag recycles, the melting temperature of silica gel is much higher than
Polypropylene can be separated conveniently and effectively with polypropylene, and the recycling of woven bag is facilitated.
8. the present invention prepares woven bag internal layer by the way of mixing reclaimed materials and virgin material, the braiding produced ensure that
While the quality of bag, production cost can be both reduced, improves productivity effect, and take full advantage of resource, while being conducive to ring
Border protection.
9. discoloration silica gel of the invention change with ambient humidity change substance in conjunction with water number, and then change its molecule
Structure, this Ni (NO3)2·2C6H12N4·10H2O is able to satisfy the binding ability to the binding ability of water lower than silica gel to water, and
Ni(NO3)2·2C6H12N4·10H2The semiquantitative index lgK1-lgK2 of O is little, the dry and wet of reaction environment that can be very sensitive and accurate
Variation has good invertibity, Ni (NO3)2·2C6H12N4·10H2The molar extinction coefficient of O changes colour than light blue cobalt ions
The height of agent, therefore identical color changeable effect can be reached using less molal quantity, therefore, Ni (NO3)2·2C6H12N4·
10H2The more economical material benefit of O, reduces the production cost of enterprise.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with specific embodiment.Obviously, described
Embodiment be only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to guarantor of the present invention
The range of shield.
It is specific real the present invention discloses the production technology and its recovery method of a kind of Polywoven Bag of quick prompt that makes moist
It is as follows to apply mode.
Embodiment 1
A kind of production technology of the Polywoven Bag for the quick prompt that makes moist, the Polywoven Bag of the quick prompt that makes moist by it is interior to
Outside successively include internal layer woven bag, dampness prompt outer layer and transparent waterproof layer, includes the following steps:
S1:The silica gel that changes colour prepares:By orange no cobalt discoloration silica gel and Ni (NO3)2·2C6H12N4·10H2O Novel color-changing silicon
Glue pulverizes into particle, and sieving prepares respectively;
S2:Drying is blended:By virgin material polypropylene 40kg, polypropylene 20kg, filling master batch calcium carbonate 10kg, auxiliary agent are recycled
5kg, partial size are the orange discoloration silica gel particle 25kg of 100 purposes, put into and stir drying in dry blender, after drying being blended
Material put into extruder, be extruded as film, after water is cooling, be cut into embryo silk with blade, and be stretched by drying-plate to be formed it is flat
Silk, it is coiled that flat filament receives silk by receive silk machine after thermal finalization;
S3:Preparation dampness prompt outer layer:By polypropylene 45kg, EVA25kg, clarifier 0.5kg, the Ni of 100 mesh of partial size
(NO3)2·2C6H12N4·10H2Heating in coextrusion blow film machine, melting after-blow is added in O Novel color-changing silica gel particle 29.5kg
It is moulded into cylinder-shaped dampness prompt outer layer;
S4:Knitting process:By coiled flat filament by circular weaving machine at columnar internal layer woven bag, by examining, inspection
After testing qualification, dampness prompt outer layer jacket is wound outside internal layer woven bag, then through winder, is formed and is bonded using compounding machine
The good woven bag with dampness prompt outer layer;
S5:Bag making:The woven bag with dampness prompt outer layer bonded that step S4 is prepared coats transparent high score outside
Sub- waterproofing agent, after dry and hard formation transparent waterproof layer, by cutting and sewing, being prepared into finished product has the plastics of dampness quick prompt to compile
Knit bag.
The present invention also provides a kind of recovery methods of the Polywoven Bag of quick prompt that makes moist, and include the following steps:
A. sort out:Classify to the discarded woven bag of recycling, be divided into I type, II type and III type, I type corresponds to outer layer part
Discoloration is yellow green, and II type corresponds to woven bag color change interval area green greater than yellow green, and III type corresponds to woven bag color change interval
Area yellow green is more than or equal to green;
b:Classification processing:The discoloration rent of I type woven bag is carried out coating transparent polymer after drying processing again anti-
Aqua dries stand-by;II type woven bag is put into baker and is dried, is dried stand-by;III type woven bag is crushed, is heated to
400 DEG C, filtering obtains filtrate A and filter residue B, and filtrate A is put into extruder, produces recycling PP GRANULES, molten by butanone
After liquid washing is dry, investment step S2 is mixed with virgin material PP GRANULES to be carried out continuing to produce, and hydrogen-oxygen will be housed in filter residue B collection
In the reaction kettle for changing sodium solution, active carbon, 300-350 DEG C is controlled reaction 3-5 hours, Ni (NO is used in concentration, cooling respectively3)2·
2C6H12N4·10H2O weak solution and crystal violet indicator solution colour to form Ni (NO3)2·2C6H12N4·10H2O Novel color-changing
Silica gel and orange no cobalt discoloration silica gel, are produced subsequently into raw material is re-used as in step S2.
Embodiment 2
A kind of production technology of the Polywoven Bag for the quick prompt that makes moist, the Polywoven Bag of the quick prompt that makes moist by it is interior to
Outside successively include internal layer woven bag, dampness prompt outer layer and transparent waterproof layer, includes the following steps:
S1:The silica gel that changes colour prepares:By orange no cobalt discoloration silica gel and Ni (NO3)2·2C6H12N4·10H2O Novel color-changing silicon
Glue pulverizes into particle, and sieving prepares respectively;
S2:Drying is blended:By virgin material polypropylene 70kg, polypropylene 10kg, filling master batch 5kg, auxiliary agent 1kg, partial size are recycled
It for the orange discoloration silica gel particle 14kg of 200 purposes, puts into and stirs drying in dry blender, material of the blending after dry is thrown
Enter extruder, be extruded as film, after water is cooling, is cut into embryo silk with blade, and be stretched to form flat filament by drying-plate, flat filament warp
Cross after thermal finalization that receive silk by receive silk machine coiled;
S3:Preparation dampness prompt outer layer:By polypropylene 65kg, EVA15kg, clarifier 0.1kg, the Ni of 200 mesh of partial size
(NO3)2·2C6H12N4·10H2Heating in coextrusion blow film machine, melting after-blow is added in O Novel color-changing silica gel particle 19.9kg
It is moulded into cylinder-shaped dampness prompt outer layer;
S4:Knitting process:By coiled flat filament by circular weaving machine at columnar internal layer woven bag, by examining, inspection
After testing qualification, dampness prompt outer layer jacket is wound outside internal layer woven bag, then through winder, is formed and is bonded using compounding machine
The good woven bag with dampness prompt outer layer;
S5:Bag making:The woven bag with dampness prompt outer layer bonded that step S4 is prepared coats transparent high score outside
Sub- waterproofing agent, after dry and hard formation transparent waterproof layer, by cutting and sewing, being prepared into finished product has the plastics of dampness quick prompt to compile
Knit bag.
The present invention also provides a kind of recovery methods of the Polywoven Bag of quick prompt that makes moist, and include the following steps:
A. sort out:Classify to the discarded woven bag of recycling, be divided into I type, II type and III type, I type corresponds to outer layer part
Discoloration is yellow green, and II type corresponds to woven bag color change interval area green greater than yellow green, and III type corresponds to woven bag color change interval
Area yellow green is more than or equal to green;
b:Classification processing:The discoloration rent of I type woven bag is carried out coating transparent polymer after drying processing again anti-
Aqua dries stand-by;II type woven bag is put into baker and is dried, is dried stand-by;III type woven bag is crushed, is heated to
400 DEG C, filtering obtains filtrate A and filter residue B, and filtrate A is put into extruder, produces recycling PP GRANULES, molten by butanone
After liquid washing is dry, investment step S2 is mixed with virgin material PP GRANULES to be carried out continuing to produce, and hydrogen-oxygen will be housed in filter residue B collection
In the reaction kettle for changing sodium solution, active carbon, 300-350 DEG C is controlled reaction 3-5 hours, Ni (NO is used in concentration, cooling respectively3)2·
2C6H12N4·10H2O weak solution and crystal violet indicator solution colour to form Ni (NO3)2·2C6H12N4·10H2O Novel color-changing
Silica gel and orange no cobalt discoloration silica gel, are produced subsequently into raw material is re-used as in step S2.
Embodiment 3
A kind of production technology of the Polywoven Bag for the quick prompt that makes moist, the Polywoven Bag of the quick prompt that makes moist by it is interior to
Outside successively include internal layer woven bag, dampness prompt outer layer and transparent waterproof layer, includes the following steps:
S1:The silica gel that changes colour prepares:By orange no cobalt discoloration silica gel and Ni (NO3)2·2C6H12N4·10H2O Novel color-changing silicon
Glue pulverizes into particle, and sieving prepares respectively;
S2:Drying is blended:By virgin material polypropylene 60kg, polypropylene 15kg, filling master batch 6kg, auxiliary agent 2kg, partial size are recycled
It for the orange discoloration silica gel particle 17kg of 150 purposes, puts into and stirs drying in dry blender, material of the blending after dry is thrown
Enter extruder, be extruded as film, after water is cooling, is cut into embryo silk with blade, and be stretched to form flat filament by drying-plate, flat filament warp
Cross after thermal finalization that receive silk by receive silk machine coiled;
S3:Preparation dampness prompt outer layer:By polypropylene 60kg, EVA18kg, clarifier 0.2kg, the Ni of 150 mesh of partial size
(NO3)2·2C6H12N4·10H2Heating in coextrusion blow film machine, melting after-blow is added in O Novel color-changing silica gel particle 21.8kg
It is moulded into cylinder-shaped dampness prompt outer layer;
S4:Knitting process:By coiled flat filament by circular weaving machine at columnar internal layer woven bag, by examining, inspection
After testing qualification, dampness prompt outer layer jacket is wound outside internal layer woven bag, then through winder, is formed and is bonded using compounding machine
The good woven bag with dampness prompt outer layer;
S5:Bag making:The woven bag with dampness prompt outer layer bonded that step S4 is prepared coats transparent high score outside
Sub- waterproofing agent, after dry and hard formation transparent waterproof layer, by cutting and sewing, being prepared into finished product has the plastics of dampness quick prompt to compile
Knit bag.
The present invention also provides a kind of recovery methods of the Polywoven Bag of quick prompt that makes moist, and include the following steps:
A. sort out:Classify to the discarded woven bag of recycling, be divided into I type, II type and III type, I type corresponds to outer layer part
Discoloration is yellow green, and II type corresponds to woven bag color change interval area green greater than yellow green, and III type corresponds to woven bag color change interval
Area yellow green is more than or equal to green;
b:Classification processing:The discoloration rent of I type woven bag is carried out coating transparent polymer after drying processing again anti-
Aqua dries stand-by;II type woven bag is put into baker and is dried, is dried stand-by;III type woven bag is crushed, is heated to
400 DEG C, filtering obtains filtrate A and filter residue B, and filtrate A is put into extruder, produces recycling PP GRANULES, molten by butanone
After liquid washing is dry, investment step S2 is mixed with virgin material PP GRANULES to be carried out continuing to produce, and hydrogen-oxygen will be housed in filter residue B collection
In the reaction kettle for changing sodium solution, active carbon, 300-350 DEG C is controlled reaction 3-5 hours, Ni (NO is used in concentration, cooling respectively3)2·
2C6H12N4·10H2O weak solution and crystal violet indicator solution colour to form Ni (NO3)2·2C6H12N4·10H2O Novel color-changing
Silica gel and orange no cobalt discoloration silica gel, are produced subsequently into raw material is re-used as in step S2.
Above to it is provided by the present invention it is a kind of make moist quick prompt Polywoven Bag production technology and its recycling side
Method is described in detail.Principle and implementation of the present invention are described for specific embodiment used herein, with
The explanation of upper embodiment is merely used to help understand method and its core concept of the invention.It should be pointed out that being led for this technology
For the those of ordinary skill in domain, without departing from the principle of the present invention, can also to the present invention carry out it is several improvement and
Modification, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (5)
1. a kind of production technology of the Polywoven Bag for the quick prompt that makes moist, it is characterised in that:The modeling of the dampness quick prompt
Expect that woven bag successively includes internal layer woven bag, dampness prompt outer layer and transparent waterproof layer from inside to outside, includes the following steps:
S1:The silica gel that changes colour prepares:By orange no cobalt discoloration silica gel and Ni (NO3)2·2C6H12N4·10H2O Novel color-changing silica gel is ground
It is broken into particle, sieving prepares respectively;
S2:Drying is blended:By virgin material polypropylene and reclaimed materials polypropylene, filling master batch, auxiliary agent, orange no cobalt discoloration silica gel particle
It puts into and stirs drying in dry blender, material of the blending after dry is put into extruder, is extruded as film, after water is cooling,
It is cut into embryo silk with blade, and is stretched to form flat filament by drying-plate, it is coiled that flat filament receives silk by receive silk machine after thermal finalization;
S3:Preparation dampness prompt outer layer:By PP GRANULES, EVA, clarifier, Ni (NO3)2·2C6H12N4·10H2The novel change of O
Color silica gel particle is added heating in coextrusion blow film machine, is blow molded into cylinder-shaped dampness prompt outer layer after melting;
S4:Knitting process:Coiled flat filament is examined and closed by examining at columnar internal layer woven bag by circular weaving machine
After lattice, dampness prompt outer layer jacket is wound outside internal layer woven bag, then through winder, has been bonded using compounding machine formation
Woven bag with dampness prompt outer layer;
S5:Bag making:The woven bag with dampness prompt outer layer bonded that step S4 is prepared coats transparent polymer outside to be prevented
Aqua after dry and hard formation transparent waterproof layer, by cutting and sewing, is prepared into the plastic knitting that finished product has dampness quick prompt
Bag.
2. a kind of production technology of the Polywoven Bag of quick prompt that makes moist according to claim 1, it is characterised in that:Institute
Stating raw material components in step S2 is virgin material polypropylene 40%-70%, recycles polypropylene 10%-20%, filling master batch 5%-10%,
Auxiliary agent 1%-5%, orange discoloration silica gel particle 14%-25%.
3. a kind of production technology of the Polywoven Bag of quick prompt that makes moist according to claim 1, it is characterised in that:Institute
Stating raw material components in step S3 is polypropylene 45%-65%, EVA15%-25%, clarifier 0.1%-0.5%, Ni (NO3)2·
2C6H12N4·10H2O Novel color-changing silica gel particle 19.9%-29.5%.
4. a kind of production technology of the Polywoven Bag of quick prompt that makes moist according to claim 1, it is characterised in that:Institute
State orange no cobalt discoloration silica gel and Ni (NO3)2·C6H12N4·10H2The partial size of O Novel color-changing silica gel particle is 100-200 mesh.
5. a kind of recovery method of the Polywoven Bag of quick prompt that makes moist according to claim 1, it is characterised in that:Packet
Include following steps:
a:Sort out:Classify to the discarded woven bag of recycling, be divided into I type, II type and III type, I type corresponds to outer layer local discolouration
For yellow green, II type corresponds to woven bag color change interval area green greater than yellow green, and III type corresponds to woven bag color change interval area
Yellow green is more than or equal to green;
b:Classification processing:Transparent polymer waterproofing agent is coated again after carrying out drying processing to the discoloration rent of I type woven bag,
It dries stand-by;II type woven bag is put into baker and is dried, is dried stand-by;III type woven bag is crushed, is heated to 400 DEG C,
Filtering, obtains filtrate A and filter residue B, and filtrate A puts into extruder, produces recycling PP GRANULES, wash by butanone solution
After drying, investment step S2 is mixed with virgin material PP GRANULES to be carried out continuing to produce, will be molten equipped with sodium hydroxide in filter residue B collection
Liquid, active carbon reaction kettle in, 300-350 DEG C of control reaction 3-5 hour, concentration cooled down, respectively with Ni (NO3)2·
2C6H12N4·10H2O solution and crystal violet indicator solution colour to form Ni (NO3)2·2C6H12N4·10H2O Novel color-changing silicon
Glue and orange no cobalt discoloration silica gel, are produced subsequently into raw material is re-used as in step S2.
Priority Applications (1)
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CN111890794A (en) * | 2020-08-06 | 2020-11-06 | 程瑾 | Plastic film drying method |
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