CN103483754B - The production method of a kind of piano white key skin and the white key of a kind of piano - Google Patents
The production method of a kind of piano white key skin and the white key of a kind of piano Download PDFInfo
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- CN103483754B CN103483754B CN201210196704.1A CN201210196704A CN103483754B CN 103483754 B CN103483754 B CN 103483754B CN 201210196704 A CN201210196704 A CN 201210196704A CN 103483754 B CN103483754 B CN 103483754B
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Abstract
The invention discloses the production method of the white key skin of a kind of piano, comprise step: S1 raw material mixes, and PMMA feed particles is mixed with nanometer silver carrier antibacterial powder; S2 injection moulding, by mixed raw materials for production injection moulding; S3 baking processing, carries out baking processing by the white key skin after shaping.Adopt PMMA material can improve the practicality of white key skin, in the present invention carrying is mixed into in PMMA feed particles by the antibacterial powder of nanometer silver, thus realize the object solving the easy breed bacteria problem of the white key of piano.Present invention also offers the white key of a kind of piano, comprise and being healthy and strong, arranged outside of being healthy and strong has Bai Jianpi, white key skin is for be manufactured by aforesaid method, owing to adding nano-silver substances in white key skin, effectively can suppress the bacteria breed on the white key of piano, ensure that player's is healthy.
Description
Technical field
The present invention relates to piano technical field, particularly the production method of a kind of piano white key skin and the white key of a kind of piano.
Background technology
Piano is a kind of shoegaze, comprises piano key, and piano key is divided into Bai Jian and black key, generally, Bai Jian be by be healthy and strong and white key skin form.White key skin is the parts manufactured separately, is then attached on being healthy and strong, for distinguishing with black key.
Because piano is a kind of shoegaze, namely player needs to press black key by finger or white key makes its sounding.Known as a kind of general knowledge, article are with under finger is touched for a long time and contacted, easily cause growing of bacterium, because key skin white in prior art does not have antibacterial, therefore white key is after clean improper or piano uses for some time, and the bacterium that Bai Jian grows is very easy to produce detrimentally affect to the health of player.
In sum, how to solve the problem of the easy breed bacteria of the white key of piano, become those skilled in the art's problem demanding prompt solution.
Summary of the invention
The technical problem to be solved in the present invention is for providing production method and the white key of a kind of piano of a kind of piano white key skin, and the white key of this piano, by using the manufacture of this production method, can solve the problem of the easy breed bacteria of the white key of piano.
For solving the problems of the technologies described above, the invention provides the production method of the white key skin of a kind of piano, comprising step:
S1 raw material mixes, and PMMA feed particles is mixed with nanometer silver carrier antibacterial powder;
S2 injection moulding, by mixed raw materials for production injection moulding;
S3 baking processing, carries out baking processing by the white key skin after shaping.
Preferably, the mass ratio of described PMMA feed particles and nanometer silver carrier antibacterial powder is: 100/2.0 to 100/3.0.
Preferably, the injection pressure carrying out injection moulding to mixed raw materials for production in described step S2 is 5.5MPa to 6.5MPa, and injection time is 6s to 8s.
Preferably, also step is comprised: S21 pressurize matched moulds between described step S2 and described step S3, pressurize and matched moulds process are carried out to the raw materials for production after described injection moulding, described dwell pressure is 5.0MPa to 6.0MPa, dwell time is 2.5s to 3.5s, and described mold pressure is 6.5MPa to 7.5MPa.
Preferably, after described step S21, also comprise step before step S3: S22 leaves standstill and shears, the normal temperature white key skin after shaping being carried out to 5d to 9d leaves standstill process, and dialogue key skin carries out shearing treatment.
Preferably, the storing temperature of described step S3 is 65 DEG C to 75 DEG C, and baking time is 2.5h to 3.5h.
Present invention also offers the white key of a kind of piano, comprise and being healthy and strong, arranged outside of being healthy and strong has Bai Jianpi, and white key skin is manufactured by the production method of the white key skin of above-mentioned piano.
The production method of the white key skin of a kind of piano provided by the invention, comprises step: S1 raw material mixes, and PMMA feed particles is mixed with nanometer silver carrier antibacterial powder; S2 injection moulding, by mixed raw materials for production injection moulding; S3 baking processing, carries out baking processing by the white key skin after shaping.
Adopt PMMA material as the main body constituent material of white key skin, the practicality of white key skin can be improved.Nanometer silver has strong suppression and killing action, and can not produce resistance.Therefore, in the present invention carrying is mixed into PMMA feed particles by the antibacterial powder of nanometer silver, by batch mixing, injection moulding etc., white key leatherware can be made to have stronger germicidal action, thus realize the object solving the easy breed bacteria problem of the white key of piano.
Present invention also offers the white key of a kind of piano, comprise and being healthy and strong, arranged outside of being healthy and strong has Bai Jianpi, and white key skin is manufactured by the production method of the white key skin of above-mentioned piano.Owing to adding nano-silver substances in white key skin, effectively can suppress the bacteria breed on the white key of piano, ensure that player's is healthy.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is the schema of the production method of the white key skin of an embodiment of the present invention piano.
Embodiment
Core of the present invention is for providing production method and the white key of a kind of piano of a kind of piano white key skin, and the white key of this piano uses this production method manufacture, by adding nanometer silver carrier antibacterial powder in PMMA raw material, can solve the problem of the easy breed bacteria of the white key of piano.
In order to make those skilled in the art understand technical scheme of the present invention better, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Please refer to Fig. 1, Fig. 1 is the schema of the production method of the white key skin of an embodiment of the present invention piano.
The invention provides the production method of the white key skin of a kind of piano, comprise step:
S1 raw material mixes, and PMMA feed particles is mixed with nanometer silver carrier antibacterial powder;
S2 injection moulding, by mixed raw materials for production injection moulding;
S3 baking processing, carries out baking processing by the white key skin after shaping.
PMMA (polymethylmethacrylate PolymethylMethacrylate) is a kind of material of asepsis environment-protecting, has good chemical stability and weathering resistance.Use PMMA as the body material of white key skin, the practicality (situations such as oxidation flavescence can not occur due to material cause life-time service) of white key skin can be improved.
Nanometer silver (Nano Silver) is exactly particle diameter is accomplished nano level argent simple substance.Nanometer silver particle diameter, mostly at 25 ran, has strong suppression and killing action to tens of kinds of pathogenic microorganisms such as intestinal bacteria, gonococcus, chlamydia trachomatises, and can not produce resistance.
Because nanometer silver has germicidal action, therefore, in the present invention carrying is mixed into PMMA feed particles, by batch mixing, injection moulding etc. by the antibacterial powder of nanometer silver, white key leatherware can be made to have stronger germicidal action, thus realize the object solving the easy breed bacteria problem of the white key of piano.
Particularly, namely effective sterilization anti-microbial effect is played in order to nanometer silver carrier antibacterial powder can be made, the impact on properity can not be had again on the white key leatherware be made up of PMMA feed particles simultaneously, recorded by the test of long duration of contriver, when the mass ratio of PMMA feed particles and nanometer silver carrier antibacterial powder is: when 100/2.0 to 100/3.0, can achieve the above object.
In one embodiment of the invention, step S2 adopts injection moulding process to carry out forming processes to mixed raw materials for production, and its injection pressure is 5.5MPa to 6.5MPa, and injection time is 6s to 8s.
Particularly, between step S2 and step S3, also comprise step: S21 pressurize matched moulds, carry out pressurize and matched moulds process to the raw materials for production after injection moulding, dwell pressure is 5.0MPa to 6.0MPa, dwell time is 2.5s to 3.5s, and mold pressure is 6.5MPa to 7.5MPa.
Based on above-described embodiment, after step s 21, also comprise step before step S3: S22 exquisiteness is sheared, to the white key skin after shaping carry out 5d (my god) to 9d (my god) normal temperature leave standstill process, and dialogue key skin carries out shearing treatment.Carry out leaving standstill process to the white key skin after injection moulding, its object is to: effectively can reduce Bai Jianpi existing internal stress after moulding, thus avoid Bai Jianpi in subsequent production operation process due to the distortion that internal stress is larger and long-living, improve the molding effect of Bai Jianpi.
In order to reduce the internal stress of white key skin further, making it in use avoid the deformation problems caused due to internal stress, the invention provides step S3 baking processing.Particularly, in the present embodiment, storing temperature is 65 DEG C to 75 DEG C, and baking time is 2.5h to 3.5h.Setting like this, by heating the white key skin after shaping, can eliminate internal stress in white key skin by high degree, improving the structural stability of white key skin, effectively reduce the possibility of its deformation.
Present invention also offers the white key of a kind of piano, comprise and being healthy and strong, arranged outside of being healthy and strong has Bai Jianpi, and white key skin is manufactured by the production method of the white key skin of above-mentioned piano.Owing to adding nano-silver substances in white key skin, effectively can suppress the bacteria breed on the white key of piano, ensure that player's is healthy.
The manufacturing processed of white key skin is set forth below in further detail with a kind of concrete operations flow process of the present invention.
The first step, first PMMA pellet and Ag-carrying nano antibiotic powder by 100 to 2.5 weight ratio mix thoroughly in homogenizer.
First check before second step, opening device whether firm mould is installed, whether oil temperature water coolant, mold cooling water be intact unimpeded, as phenomenon without exception, and opening power, check that whether heating collar, electric current be normal and whether barrel design temperature is correct, preliminary drying barrel 45 minutes.
3rd step, open the power switch of feeder, carry out self-feeding, open and dry hopper power switch and carry out bakings material (baking material temperature degree 90 DEG C).
4th step, preliminary drying barrel are after 45 minutes, treat that material completes melting, start oil motor, press manual operation button and carry out manual preformed, as situation without exception, according to work, injection moulding needs, adjust each system pressure flow, adjustment injection time, adjust cooling time, the distance of adjustment nozzle and mould and mould ejection distance, the metering of adjustment storing.
5th step, adjust each position after carry out injection test and penetrate production, after normal, can be mass.
After 6th step, white key skin injection moulding complete, place 1 week at normal temperatures.Dialogue key skin cross-peen presses figure paper size machining.
The white key skin monolithic of the 7th step, machine-shaping keeps flat in an oven, and temperature is arranged to 70 DEG C, baking time 3 hours, after baking in 3 hours terminates, and powered-down.In an oven after naturally cooling, take out Bai Jianpi, packaging Bai Jianpi.
Above the production method of a kind of piano provided by the present invention white key skin and the white key of a kind of piano are described in detail.Apply specific case herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (2)
1. a production method for the white key skin of piano, is characterized in that, comprising:
Step 1, mixes PMMA feed particles with the ratio of mass ratio 100/2.0 to 100/3.0 with nanometer silver carrier antibacterial powder;
Mixed raw materials for production are processed 6s to 8s and carry out injection moulding by step 2 under the pressure of 5.5MPa to 6.5MPa;
Step 21, carry out pressurize and matched moulds process to the raw materials for production after described injection moulding, described dwell pressure is 5.0MPa to 6.0MPa, and the dwell time is 2.5s to 3.5s, and described mold pressure is 6.5MPa to 7.5MPa.
Step 22, the normal temperature white key skin after shaping being carried out to 5d to 9d leaves standstill process, and dialogue key skin carries out shearing treatment.
Step 3, carries out baking processing in 65 DEG C to 75 DEG C bakings for 2.5h to 3.5h by the white key skin after shaping.
2. the white key of piano, comprises and being healthy and strong, described in arranged outside of being healthy and strong have Bai Jianpi, it is characterized in that, described white key skin is for being manufactured by the production method of the white key skin of the piano described in the claims 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210196704.1A CN103483754B (en) | 2012-06-14 | 2012-06-14 | The production method of a kind of piano white key skin and the white key of a kind of piano |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210196704.1A CN103483754B (en) | 2012-06-14 | 2012-06-14 | The production method of a kind of piano white key skin and the white key of a kind of piano |
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| CN103483754A CN103483754A (en) | 2014-01-01 |
| CN103483754B true CN103483754B (en) | 2015-08-19 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103817849A (en) * | 2014-02-25 | 2014-05-28 | 东莞市劲升无尘涂装科技有限公司 | Electronic product outer shell TPU pearl stereo-molding process |
| CN104072922A (en) * | 2014-07-08 | 2014-10-01 | 森鹤乐器股份有限公司 | Production method of antibacterial white key skins |
| DE102017115672B4 (en) | 2017-07-12 | 2020-08-27 | MAX-PLANCK-Gesellschaft zur Förderung der Wissenschaften e.V. | Isotropic hydroxyapatite / gelatin composite material, process for its production and its use |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190825A (en) * | 2010-03-12 | 2011-09-21 | 周刚 | Preparation methods for antibacterial plastic master batches and product |
| CN103073824A (en) * | 2013-01-30 | 2013-05-01 | 合肥美的荣事达电冰箱有限公司 | Fabric composition for refrigeration equipment |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102190825A (en) * | 2010-03-12 | 2011-09-21 | 周刚 | Preparation methods for antibacterial plastic master batches and product |
| CN103073824A (en) * | 2013-01-30 | 2013-05-01 | 合肥美的荣事达电冰箱有限公司 | Fabric composition for refrigeration equipment |
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Inventor after: Zhang Kaifeng Inventor after: Wu Liping Inventor after: Hu Yangdan Inventor after: Hu Jiandi Inventor after: Cen Difeng Inventor before: Li Bingsheng Inventor before: Luo Ruiyu Inventor before: Wu Liping Inventor before: Zhang Difeng |
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