CN108187995A - A kind of coating on inner surface bucket and preparation method thereof - Google Patents
A kind of coating on inner surface bucket and preparation method thereof Download PDFInfo
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- CN108187995A CN108187995A CN201711442328.9A CN201711442328A CN108187995A CN 108187995 A CN108187995 A CN 108187995A CN 201711442328 A CN201711442328 A CN 201711442328A CN 108187995 A CN108187995 A CN 108187995A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/227—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of containers, cans or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/102—Pretreatment of metallic substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/52—Two layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2503/00—Polyurethanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2506/00—Halogenated polymers
- B05D2506/10—Fluorinated polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2507/00—Polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2508/00—Polyesters
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Laminated Bodies (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of coating on inner surface buckets, including bucket ontology, the bucket body internal surface is coated with one layer of thermoplastic resin, the coating thickness is 0.001 10mm, the thermoplastic melt flow rate is not less than 10g/10min, by thermoplastic resin in the molten state, and at least 4000 cm2The speed of/min is contacted with the flowing of bucket body internal surface and is coated, pass through thermoplastic resin of the melt flow rate (MFR) not less than 10 g/10min that coating thickness is 0.001 10 mm in bucket body internal surface, it can be more convenient, more effectively solving the problems, such as the bucket inner surface of manufacture has bubble or stomata.
Description
Technical field
The present invention relates to technical field of surface coating, it particularly relates to a kind of coating on inner surface bucket and preparation method thereof.
Background technology
Fill food, beverage, industrial chemicals, monomer, surfactant, coating, edible oil, mineral oil, resin, highly acid
The as with a girdle of iron method using resin coating metal bucket inner surface of the various materials such as substance, strong alkaline substance, to prevent long-term
Pollutant is moved to from metal bucket container on material during storage or metal bucket is corroded by material.
For example, polyethylene coated method is usually by ladle body, bottom plate or top plate circle circle and is processed into tubular（Cupuliform）Afterwards, holding
The inner surface electrostatic spraying polyethylene powder coating of device, and melted in heating furnace.Also a kind of method is to apply polyethylene powders
Advance electrostatic applications are expected in ladle body, bottom plate or top plate, melting is heated in heating furnace, and the polyethylene being consequently formed is applied into membrane material
Material volume is honored as a queen, and is heated and is melted so as to partially fused with seaming again.In addition, still an alternative is that, use advance layer
The steel plate of polyethylene film is pressed with, be heated and is melted, to be formed and seaming is into after ladle body, bottom plate or top plate, with volume
It seals partially fused.
But, in the above prior art, although polyethylene powders or laminated film are implemented heat fusing processing so as to
Seaming part is in close contact, but in this hot melt engagement, bubble may be generated between the slight void of seaming part.This
A little bubbles be the polyethylene powder coating on seaming part is applied to particle between existing minimum gas or when by molten
Close laminated film covering seaming portion timesharing, the air infiltrated between laminated film and the inner surface of metal bucket.In addition, when such gas is broken
When splitting, the stomata opened to outside can be formed.There are the machineries that bubble or stomata can cause film in the inner surface coating of metal bucket
The reduction of intensity or barrier property, therefore it is desirable that the generation of bubble and stomata can be inhibited.
Solution to the problems described above is disclosed in existing patent, is exactly in the toner coating progress to electrostatic coating
It is hot-melted after process, by making a return journey bubble removing to carrying out trepanning there are the part of gas in resin coating film.However, it to remove completely
The fine gas entered in resin is gone to be not easy to, and we also worry to remove bubble and trepanning may make film
Barrier property reduces.It would therefore be desirable to by a kind of more easily method, it is made without the inner surface coating iron of bubble or stomata
Bucket.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Invention content
For the above-mentioned technical problem in the relevant technologies, the present invention proposes a kind of coating on inner surface bucket and preparation method thereof,
It can solve above-mentioned technical problem.
To realize the above-mentioned technical purpose, the technical proposal of the invention is realized in this way：
A kind of coating on inner surface bucket, including bucket ontology, the bucket body internal surface is coated with one layer of thermoplastic resin, the coating
Thickness is 0.001-10mm, and the thermoplastic melt flow rate is not less than 10g/10min.
Further, the thermoplastic resin selects polyolefin, polyester, polyamide and one kind or several in fluoride resin
Kind.
Further, the bucket ontology uses metal material.
Further, added with antioxidant, stabilizer, fire retardant, pigment, inorganic fill in the thermoplastic resin
One or more of agent, softening agent.
Further, the thermoplastic resin and the adhesive strength of the bucket body internal surface are not less than 0.1kg/25mm.
Further, the thermoplastic melt flow rate is 30-300g/10min.
Further, the coating thickness is 0.005-5mm.
A kind of preparation method of coating on inner surface bucket, by thermoplastic resin in the molten state, and at least 4000 cm2/
The speed of min is contacted with the flowing of bucket body internal surface and is coated.
Further, the coating speed at least 20000cm2/min。
Further, coating pre-treatment step is further included, the pre-treatment step is in the bucket body internal surface and outside
Chemical conversion treatment or primary coat are carried out on surface.
Beneficial effects of the present invention：Pass through the melt flows that coating thickness is 0.001-10 mm in bucket body internal surface
Rate be not less than 10g/10min thermoplastic resin, can be more convenient, more effectively solve manufacture bucket inner surface have bubble or
The problem of stomata.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the manufacturing device using renderings described in example 1 constructed in accordance.
Fig. 2 is the manufacturing device using renderings described in example 3 constructed in accordance.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's all other embodiments obtained belong to what the present invention protected
Range.
A kind of coating on inner surface bucket, including bucket ontology, the bucket body internal surface is coated with one layer of thermoplastic resin, described
Coating thickness is 0.001-10mm, and the thermoplastic melt flow rate is not less than 10g/10min.
The thermoplastic resin selects one or more of polyolefin, polyester, polyamide and fluoride resin.
The bucket ontology uses metal material.
Added in antioxidant, stabilizer, fire retardant, pigment, inorganic filler, softening agent in the thermoplastic resin
One or more.
The thermoplastic resin and the adhesive strength of the bucket body internal surface are not less than 0.1kg/25mm.
The thermoplastic melt flow rate is 30-300g/10min.
The coating thickness is 0.005-5mm.
A kind of preparation method of coating on inner surface bucket, by thermoplastic resin in the molten state, and at least 4000 cm2/
The speed of min is contacted with the flowing of bucket body internal surface and is coated.
The coating speed at least 20000cm2/min。
The pre-treatment step is that chemical conversion treatment or primary coat are carried out in the bucket body internal surface and outer surface.
In order to facilitate understand the present invention above-mentioned technical proposal, below by way of in specifically used mode to the present invention it is above-mentioned
Technical solution is described in detail.
When specifically used, bucket ontology according to the present invention is that less than 18 liters or more 400 liters of made of metal is cylindric
Container, shape are not particularly limited, and including known shape, such as opened type and head compact metal bucket.It in addition, can
To be welded to ladle body and reinforcement, the various processing such as it is embossed to top plate and bottom plate, and this processing can be in this hair
It is carried out after bright inner surface coating process.Bucket ontology used in metal material, be not particularly limited, can use steel,
Various metals and its alloys such as tinplate, tin ferroalloy, stainless steel, aluminium, copper, titanium.
Preferably, before being coated with resin, bucket ontology can carry out knownization in its inner surface and the outer surface
Learn conversion processing or primary coat.Processing in this way can improve the durability of bucket and the adaptation of resin.
The melt flow rate (MFR) for covering the thermoplastic resin of bucket body internal surface is not less than 10g/10min.Melt flows speed
Rate is measured according to JISK7210, and when the fusing point of thermoplastic resin is less than 200 DEG C, determination condition is 230 DEG C, and fusing point is not small
In 200 DEG C, using+30 DEG C of the fusing point of thermoplastic resin as measuring temperature, it is measured with the load of 49N.In addition, more
In the case that kind thermoplastic resin is used in mixed way, melt flow rate (MFR) is under above-mentioned measuring condition, with reference to peak melting point
Thermoplastic resin come it is determining.The preferred weight of every 10 minutes of the melt flow rate (MFR) measured under these conditions is 10-
500g, more preferable weight are 20-400g, and still further preferably weight is 30-300g.Melt flow rate (MFR) is set in above-mentioned model
In enclosing, the bubble or stomata of thermoplastic resin layer can be reduced, the corrosion of bucket or material pollution can be inhibited.
The thickness of the thermoplastic resin coating of bucket body internal surface is 0.001-10mm.The preferred thickness of film is 0.005-
5mm, more preferable thickness are 0.01-1mm, and still further preferably thickness is 0.02-0.5mm.By by the thickness of thermoplastic resin layer
Degree setting is within the above range, it is possible to reduce bubble or stomata, and the corrosion of bucket and material pollution can be inhibited.
Since by the way that the thickness of the melt flow rate (MFR) of thermoplastic resin and film is set within the above range, Neng Gou
Film is formed in the inner surface of bucket in short time, it is easy to produce, by using melt flow rate (MFR) not less than 10 g/10min's
Thermoplastic resin, can be to be not less than 4000 cm2The speed of/min forms coating.In view of productivity, preferred rate should not
Less than 4000 cm2/ min, more preferable rate are not less than 10000 cm2/ min, still further preferably rate are not less than 20000
cm2/min.The formation speed of thermoplastic resin coating can be calculated from coating duration and spreading area.
The type for being coated with the thermoplastic resin of bucket inner surface includes, and polyethylene, polypropylene, polybutene, ethylene/alpha-olefin are common
The vistanexes such as polymers, such as polyvinyl chloride, polyvinyl acetate, polyvinylidene chloride, polyvinyl alcohol, polyvinyl acetal
Wait polyvinyl resins, polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate (PBT),
The polyester resin such as polyethylene naphthalate, polybutylene naphthalate, as polystyrene, styrene/acrylonitrile are copolymerized
Styrene resins, nylon-6, nylon-11, Nylon-12, nylon -66, the Buddhist nuns such as object, styrene/acrylonitrile/butadiene copolymer
Dragon -610, nylon-6 12, nylon-6 T, nylon-6 I, nylon-9 T, nylon-M5T, polyamide/polyether elastomer etc. are polyamide-based
Resin, polytetrafluoroethylene (PTFE)（PTFE）, polychlorotrifluoroethylene（PCTFE ）, polyvinylidene fluoride（PVDF）, polyvinyl fluoride（PVF）、
Perfluoro alkoxy fluorocarbon resin（PFA）, tetrafluoraoethylene-hexafluoropropylene copolymer（FEP）, ethylene-tetrafluoroethylene copolymer
（ETFE）, ethylene-chlorotrifluoro-ethylene copolymer（ECTFE）Fluoride resins are waited, such as makrolon, polyacetals, polyphenylene oxide, poly- virtue
Ester, polysulfones, polyether sulfone, polyphenylene sulfide, polyether-ether-ketone, polyimides, polyetherimide and phenylethylene, olefines, vinyl chloride
The thermoplastic elastic materials such as class, polyurethanes, esters, amides can be used alone or in combination.In above-mentioned thermoplastic resin
In, in terms of the corrosion resistance of bucket and resistance to material pollution, answer preferred polyolefm class, polyesters, polyamide-based, fluorination
Resin.
In the T shape disbonded tests according to JISK685, intensity should be not less than 0.1kg/25mm, and more preferable intensity is not small
In 1kg/25mm, still further preferably intensity is not less than 2 kg/25mm.By the way that the adhesive strength of thermoplastic resin layer is set in
In above range, the corrosion resistance of bucket can be improved, and the thermoplastic resin layer being coated on barrel inner surface can be inhibited
Stripping.
When using as polyethylene, polypropylene, fluoride resin are when being not easy the thermoplastic resin with metal adhesive, can use
Known adhesiveness improving environment.The example of adhesiveness improving environment include sided corona treatment, flame treatment, corona treatment,
Excimer laser processing, ultraviolet treatment with irradiation, prime treatment etc..It is this to can be applied to heat for improving the processing of adhesiveness
Any one of inner surface of plastic resin and bucket or both.By processing as implementation, thermoplastic resin can be improved
With the bonding force of the inner surface of bucket, above-mentioned prime treatment can use adhesive, Anchor Agent, the hot melt adhesive of usual vehicle type
The non-solvent adhesives such as agent.In addition, in addition to above-mentioned bonding improving environment, it, also can be by importing picture in terms of thermoplastic resin
The polar functional group of acid modified polyolefin or the thermoplastic resin to metal using ionomer resin etc. with high adherence, are carried
High and bucket adhesiveness, in addition, in this embodiment, thermoplastic resin can contain known additive such as：Antioxidant,
Stabilizer, fire retardant, pigment, inorganic filler, softening agent etc..
The manufacturing method of resinous coat bucket：By thermoplastic resin in the molten state, and at least 4000 cm2/ min's
Speed is contacted with the flowing of bucket body internal surface and is coated.The manufacturing method of known resinous coat metal bucket can be used, also may be used
The steel plate for being laminated thermoplastic resin membrane to be used to be worked into the method on metal bucket.Wherein, by by thermoplastic resin fluid
It is contacted in the molten state with metal bucket flowing and is not likely to produce bubble or stomata, processing speed so as to carry out the method for inner surface coating
Also it is high.
Production Example 1：
By the way that staving and bottom plate seaming are processed into cup-shaped, be then installed in can be as shown in Figure 1 biaxially oriented on rotate
Device in, the thermoplastic resin for heating melting is put into container later, is led in temperature not less than in the environment of melting point resin
Crossing above device rotates roller, and internal molten resin is made to be contacted with the flowing of the inner surface of container and forms coating.Hereafter, will
Opening portion tilts down, and the internal extra molten resin of discharge is simultaneously cooled down, and the inner surface for thus just completing metal bucket applies
Cloth.The thickness of coating can be controlled by adjusting the addition of thermoplastic resin and the discharge rate of Excess resin.
Production Example 2：
By staving and bottom plate and top plate seaming with bayonet and the metal bucket of head compact is processed into, is then fitted into and schemes
In 1 identical manufacturing device.By the way that thermoplastic resin particle is injected container from bayonet and operates the equipment, and with burner from
Heated outside metal bucket, while internal thermoplastic resin particle is dissolved, implemented with metal bucket inner surface
Resin is coated with.In the case where resin is excessive, will Open Side Down tilts, internal molten resin is made to be discharged from bayonet, with laggard
Thus row cooling just completes the resin coating of metal bucket inner surface.
Production Example 3：
By staving and bottom plate seaming and cup-shaped receptacle is processed into, the molten resin that then would be heated to more than fusing point injects wherein,
And by using manufacturing device as shown in Figure 2, diameter is made to be slightly smaller than metal bucket internal diameter, surface has been subjected to the mold of demoulding processing
Decline, make its strong binding in inside of iron drum, it will be between metal bucket and metal die using the mobility of the thermoplastic resin of fusing
Gap fill up, be thus coated with the inner surface of metal bucket.
Production Example 4：
According to known methods, the laminate steel that is obtained by using laminated thermoplastic film on the steel plate is molded metal bucket, and
And by heating the film to fuse seaming part, inner surface is thus obtained and has covered cated metal bucket.
Embodiment 1：
Using the method for Production Example 1, the polyethylene of MFR=30g/10min is coated on the inner surface of metal bucket, MFR is melt flow
Dynamic rate.It is 2000 cm by the coating speed that coating processing time calculates2/min.The obtained confirmation of coating on inner surface metal bucket
As a result, coating layer thickness is 0.002 mm, without uncoated part, without bubble or stomata.
Embodiment 2：
Using the method for Production Example 2, the maleic anhydride modified polypropylene of MFR=15g/10min is applied in the inner surface of metal bucket.By
2000 cm of coating speed that coating processing time calculates2/ min, coating thickness are 0.03 mm.Later, further inject into MFR=
120g/10min] polypropylene, the painting polypropylene layer on maleic anhydride modified polypropylene layer.It is calculated by coating processing time
Coating speed is 2000cm2/ min, coating thickness 0.05mm.The confirmation result of the coating on inner surface metal bucket finally obtained
It is, without uncoated part, without bubble or stomata.
Embodiment 3：
Using the method for Production Example 3, the polyethylene terephthalate of MFR=20g/10min is coated on the inner surface of metal bucket
Ester.It is 2000cm by the coating speed that coating processing time calculates2/min.The confirmation result of obtained coating on inner surface metal bucket
It is that the thickness of coating is 0.03mm, without not coated part, without bubble or stomata.
Embodiment 4：
According to the method for Production Example 4, coating on inner surface metal bucket is manufactured using the nylon 6 of MFR=25g/10min.The thickness of coating
For 0.03 mm, without uncoated part, without bubble or stomata.
Embodiment 5：
Using the method for Production Example 1, with the inner surface of the ETFE coating metal buckets of MFR=15g/10min.By coating processing time
The coating speed of calculating is 4000 cm2/min.The obtained confirmation of coating on inner surface metal bucket is as a result, coating layer thickness is 0.02
Mm, without uncoated part, without bubble or stomata.
Embodiment 6：
Using the method for Production Example 2, the polyethylene of MFR=30g/10min is coated on the inner surface of metal bucket.By coating process
The coating speed that time calculates is 12,000 cm2/min.The confirmation of obtained interior finishing coat metal bucket is as a result, the thickness of coating
It spends for 0.5 mm, without uncoated part, without bubble or stomata.
Embodiment 7：
Using the method for Production Example 3, the polyethylene terephthalate of MFR=20g/10min is coated on the inner surface of metal bucket
Ester.It is 20,000 cm by the coating speed that coating processing time calculates2/min.The confirmation knot of obtained interior finishing coat metal bucket
Fruit is that the thickness of coating is 0.1 mm, without uncoated part, without bubble or stomata.
Embodiment 8：
According to the method for Production Example 4, maleated polypropylene is used（Thickness=20 μm, the g/10min of MFR=15）And polypropylene（It is thick
=50 μm of degree, MFR=120g/10min）Manufacture coating on inner surface metal bucket in duplicature.There is no uncoated part, without bubble
Or stomata.
Embodiment 9：
Using the method for Production Example 1, the nylon 6 of MFR=25g/10min is coated on the inner surface of metal bucket.During by coating process
Between the coating speed that calculates be 2000 cm2/min.The confirmation of obtained interior finishing coat metal bucket is as a result, the thickness of coating is
0.8 mm, without uncoated part, without bubble or stomata.
Embodiment 10：
Using the method for Production Example 1, the ETFE of MFR=15g/10min is coated on the inner surface of metal bucket.During by coating process
Between the coating speed that calculates be 5000 cm2/min.The confirmation of obtained interior finishing coat metal bucket is as a result, the thickness of coating is
0.8 mm, without uncoated part, without bubble or stomata.
Comparative example 1：
Using the method for Production Example 1, the polyethylene of MFR=5g/10min is coated on the inner surface of metal bucket.With with 6 phase of embodiment
Same processing time is coated processing, but confirms as a result, there is uncoated portion on metal bucket inner surface, and coating process is not complete
Into, and have bubble or stomata.
Comparative example 2：
Using the method for Production Example 2, the nylon 6 of MFR=6g/10min is coated on the inner surface of metal bucket.With with 9 phase of embodiment
Same processing time is coated processing, but confirms as a result, there is uncoated portion on metal bucket inner surface, and coating process is not complete
Into, and have bubble or stomata.
Comparative example 3：
Using the method for Production Example 3, the polyethylene terephthalate of MFR=6g/10min is coated on the inner surface of metal bucket
Ester.Processing is coated, but confirm as a result, there is uncoated portion on metal bucket inner surface with processing time same as Example 9
Point, coating process does not complete, and has bubble or stomata.
Comparative example 4：
According to the method for Production Example 4, coating on inner surface metal bucket is made using the nylon 6 of MFR=5g/10min.The interior table of metal bucket
Face, which also confirms, bubble or stomata.
In conclusion by means of the present invention above-mentioned technical proposal, by bucket body internal surface coating thickness be
The melt flow rate (MFR) of 0.001-10 mm is not less than the thermoplastic resin of 10g/10min, can be more convenient, and more effectively solves
The bucket inner surface of manufacture has the problem of bubble or stomata.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of coating on inner surface bucket, which is characterized in that including bucket ontology, the bucket body internal surface is coated with one layer of thermoplasticity
Resin, the coating thickness are 0.001-10mm, and the thermoplastic melt flow rate is not less than 10g/10min.
2. a kind of coating on inner surface bucket according to claim 1, which is characterized in that the thermoplastic resin selection polyolefin,
One or more of polyester, polyamide and fluoride resin.
3. a kind of coating on inner surface bucket according to claim 1, which is characterized in that the bucket ontology uses metal material.
4. a kind of coating on inner surface bucket according to claim 1, which is characterized in that antioxygen is added in the thermoplastic resin
One or more of agent, stabilizer, fire retardant, pigment, inorganic filler, softening agent.
5. a kind of coating on inner surface bucket according to claim 1, which is characterized in that the thermoplastic resin and the bucket ontology
The adhesive strength of inner surface is not less than 0.1kg/25mm.
A kind of 6. coating on inner surface bucket according to claim 1, which is characterized in that the thermoplastic melt flow rate
For 30-300g/10min.
7. a kind of coating on inner surface bucket according to claim 1, which is characterized in that the coating thickness is 0.005-5mm.
8. a kind of preparation method of coating on inner surface bucket, which is characterized in that by thermoplastic resin in the molten state, and at least
4000 cm2The speed of/min is contacted with the flowing of bucket body internal surface and is coated.
9. a kind of preparation method of coating on inner surface bucket according to claim 8, which is characterized in that the coating speed is at least
20000cm2/min。
10. a kind of preparation method of coating on inner surface bucket according to claim 8, which is characterized in that locate before further including coating
Step is managed, the pre-treatment step is that chemical conversion treatment or primary coat are carried out in the bucket body internal surface and outer surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442328.9A CN108187995A (en) | 2017-12-27 | 2017-12-27 | A kind of coating on inner surface bucket and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442328.9A CN108187995A (en) | 2017-12-27 | 2017-12-27 | A kind of coating on inner surface bucket and preparation method thereof |
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| Publication Number | Publication Date |
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| CN108187995A true CN108187995A (en) | 2018-06-22 |
Family
ID=62584431
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| CN201711442328.9A Pending CN108187995A (en) | 2017-12-27 | 2017-12-27 | A kind of coating on inner surface bucket and preparation method thereof |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093302A (en) * | 1992-12-23 | 1994-10-12 | 希蒙特公司 | Apply the technology of polyolefine material at the inner surface of canister |
| CN1129167A (en) * | 1995-11-29 | 1996-08-21 | 张凤焘 | Plastic dip-application technology for interior of metal container and apparatus thereof |
-
2017
- 2017-12-27 CN CN201711442328.9A patent/CN108187995A/en active Pending
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