CN107031020A - A kind of blow moiding method of frosted lampshade - Google Patents
A kind of blow moiding method of frosted lampshade Download PDFInfo
- Publication number
- CN107031020A CN107031020A CN201710286697.7A CN201710286697A CN107031020A CN 107031020 A CN107031020 A CN 107031020A CN 201710286697 A CN201710286697 A CN 201710286697A CN 107031020 A CN107031020 A CN 107031020A
- Authority
- CN
- China
- Prior art keywords
- pet
- lampshade
- frosted
- raw materials
- abrasive particle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
- B29C49/04—Extrusion blow-moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/0005—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor characterised by the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/64—Heating or cooling preforms, parisons or blown articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/42—Component parts, details or accessories; Auxiliary operations
- B29C49/78—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
- B29K2067/003—PET, i.e. poylethylene terephthalate
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention provides a kind of blow moiding method of frosted lampshade, it is characterised in that including step in detail below：S1.PET raw materials and abrasive particle freeze-day with constant temperature, pass through feed system melting mixing；S2. abrasive particle is provided with two layers, with PET raw materials formation composite construction, extruded machine extrusion；S3. according to the characteristic of material, required processing temperature is reached by 18 24s preheatings, required processing materials are filtrated to get through filtering measuring pump；S4. the material after preheating is mixed into by distributor and be blow molded by mould, cooled down rapidly in 3 5s after blowing postforming, obtain lampshade finished product.The present invention cools down the two fast key factors by controlling heating fast, after shaping, searches out rapidly cool time optimal after most suitable heat time and shaping, and the PET lampshade effects made are best.Sheet material can be softened completely, and the crystallite dimension of PET crystallizations is small, and the PET lampshade transparencies produced meet lampshade requirement.
Description
Technical field
Present invention relates particularly to a kind of blow moiding method of frosted lampshade.
Background technology
PET is a kind of thermoplastic material being widely used in industry, and its application includes refrigerator, food containers etc.
Field.PET material asepsis environment-protecting, advantage of lower cost, impact strength is high, meets the requirement of lighting of home product.But current PET
Material is not applied to lighting of home industry, and it is because the lampshade made by PET material is in shaping cooling procedure to trace it to its cause
The larger crystallization of nucleus is easily formed, so as to result in lamp face in opaque white color, light transmittance is poor.The PET sheet material cost of raw material
Compared to be all thermoplastic PMMA and PS it is relatively low, with price advantage.
Lampshade on the market typically uses PMMA acrylic materials as raw material now, run into impact strength it is larger when
It is easily broken, and PMMA materials are not environmentally.Thereby it is thinkable that replaces PMMA materials to be used for the manufacture of lampshade with PET material, both
Environmental protection can be reached, the effect of cost is reduced；The impact strength of lampshade can be improved again.
But, it is its light transmittance and appearance tactile impression as the most important feature of lampshade, when PET sheet material material and frosted grain
Son mixing postforming after, lamp face will not form frosted lines, the substitute is lampshade entire body whiting, both without frosted finish effect with
Texture, the light transmittance not also being adapted to.
Traditional method makees frosted lampshade, it is only necessary to which adding abrasive particle by the method for sandblasting after lampshade shaping is
Can；But for PET sheet material material, the PET lampshade complex process that sandblasting is worked it out again after lampshade shaping, cost is high, light transmittance
Low, lack of homogeneity, frosted finish effect is not obvious.In PET sheet material material lampshade blow-molding process, if the heat time is too slow, plate
Material can not soften completely, it is impossible to shape；If cool time is too slow after shaping, PET nucleus can grow up, so as to cause lampshade
It is opaque.
The content of the invention
In view of this, the present invention provides a kind of blow moiding method of frosted lampshade, by controlling heating fast, is cooled down after shaping fast
The two key factors, search out rapidly cool time optimal after most suitable heat time and shaping, the PET lampshades effect made
It is really best.Sheet material can be softened completely, and the crystallite dimension of PET crystallizations is small, and the PET lampshade transparencies produced meet lampshade will
Ask.
The technical scheme is that：A kind of blow moiding method of frosted lampshade, it is characterised in that including walking in detail below
Suddenly：
S1.PET raw materials and abrasive particle freeze-day with constant temperature, pass through feed system melting mixing；S2. abrasive particle is provided with two layers, with
PET raw materials formation composite construction, extruded machine extrusion；
S3. according to the characteristic of material, required processing temperature is reached by 18-24s preheatings, institute is filtrated to get through filtering measuring pump
The processing materials needed；
S4. the material after preheating is mixed into by distributor and be blow molded by mould, it is rapid cold in 3-5s after blowing postforming
But, lampshade finished product is obtained.
Further, the condition of freeze-day with constant temperature described in S1 is dry 8-12h, the melting in 100-120 DEG C of insulating box
The condition of mixing is 220-270 DEG C of melt blending 3-6min, rotating speed 40-65r/min.
Further, extrusion condition is in the extruder described in S3：260-290 DEG C of processing temperature, extruder rotating speed 5-
20r/min。
Further, the composite construction described in S2 is the tow sides that abrasive particle layer is symmetrically set in PET raw materials.
Further, the particle diameter of the frosted particle is 1-5nm.
Further, the refractive index of the frosted particle is 0.5-1.2.
Further, the shrinkage factor of the abrasive particle is less than the shrinkage factor of the PET raw materials.Abrasive particle is received with PET
Shrinkage is different, shrinks to form concave-convex surface during cooling.
Further, the crystallite dimension of the PET raw materials is 2 μm -200 μm.
The beneficial effects of the present invention are：Using abrasive particle is added in PET sheet material, the sheet material used during blowing has been wrapped
Containing PET and abrasive particle, frosted finish effect can retain after shaping, can be applied to the production of frosted lampshade.
The present invention cools down the two fast key factors by controlling heating fast, after shaping, search out the most suitable heat time with
And optimal rapidly cool time after shaping, the PET lampshade effects made are best.Sheet material can be softened completely, PET crystallizations
Crystallite dimension is small, and the PET lampshade transparencies produced meet lampshade requirement.
Embodiment
Technical scheme is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is only a part of embodiment of the invention to apply example, rather than whole embodiments.
Embodiment 1
A kind of blow moiding method of frosted lampshade, it is characterised in that including step in detail below：
S1.PET raw materials and abrasive particle freeze-day with constant temperature, pass through feed system melting mixing；S2. abrasive particle is provided with two layers, with
PET raw materials formation composite construction, extruded machine extrusion；
S3. according to the characteristic of material, required processing temperature is reached by 20s preheatings, needed for being filtrated to get through filtering measuring pump
Processing materials；
S4. the material after preheating is mixed into by distributor and be blow molded by mould, it is rapid cold in 3-5s after blowing postforming
But, lampshade finished product is obtained.
Further, the condition of freeze-day with constant temperature described in S1 is dry 10h in 110 DEG C of insulating boxs, the melting mixing
Condition is 260 DEG C of melt blending 4min, rotating speed 50r/min.
Further, extrusion condition is in the extruder described in S3：270 DEG C of processing temperature, extruder rotating speed 10r/
min。
Further, the composite construction described in S2 is the tow sides that abrasive particle layer is symmetrically set in PET raw materials.
Further, the particle diameter of the frosted particle is 2nm.
Further, the refractive index of the frosted particle is 0.8.
Further, the shrinkage factor of the abrasive particle is less than the shrinkage factor of the PET raw materials.Abrasive particle is received with PET
Shrinkage is different, shrinks to form concave-convex surface during cooling.
Further, the crystallite dimension of the PET raw materials is 50 μm.
The beneficial effects of the present invention are：Using abrasive particle is added in PET sheet material, the sheet material used during blowing has been wrapped
Containing PET and abrasive particle, frosted finish effect can retain after shaping, can be applied to the production of frosted lampshade.
The present invention cools down the two fast key factors by controlling heating fast, after shaping, search out the most suitable heat time with
And optimal rapidly cool time after shaping, the PET lampshade effects made are best.Sheet material can be softened completely, PET crystallizations
Crystallite dimension is small, and the PET lampshade transparencies produced meet lampshade requirement.
Embodiment 2
A kind of blow moiding method of frosted lampshade, it is characterised in that including step in detail below：
S1.PET raw materials and abrasive particle freeze-day with constant temperature, pass through feed system melting mixing；S2. abrasive particle is provided with two layers, with
PET raw materials formation composite construction, extruded machine extrusion；
S3. according to the characteristic of material, required processing temperature is reached by 22s preheatings, needed for being filtrated to get through filtering measuring pump
Processing materials；
S4. the material after preheating is mixed into by distributor and is blow molded by mould, cooled down rapidly in 4s after blowing postforming,
Obtain lampshade finished product.
Further, the condition of freeze-day with constant temperature described in S1 is dry 9h, the bar of the melting mixing in 110 DEG C of insulating boxs
Part is 250 DEG C of melt blending 4min, rotating speed 45r/min.
Further, extrusion condition is in the extruder described in S3：280 DEG C of processing temperature, extruder rotating speed 8r/min.
Further, the composite construction described in S2 is the tow sides that abrasive particle layer is symmetrically set in PET raw materials.
Further, the particle diameter of the frosted particle is 3nm.
Further, the refractive index of the frosted particle is 0.7.
Further, the shrinkage factor of the abrasive particle is less than the shrinkage factor of the PET raw materials.Abrasive particle is received with PET
Shrinkage is different, shrinks to form concave-convex surface during cooling.
Further, the crystallite dimension of the PET raw materials is 75 μm.
Embodiment 3
A kind of blow moiding method of frosted lampshade, it is characterised in that including step in detail below：
S1.PET raw materials and abrasive particle freeze-day with constant temperature, pass through feed system melting mixing；S2. abrasive particle is provided with two layers, with
PET raw materials formation composite construction, extruded machine extrusion；
S3. according to the characteristic of material, required processing temperature is reached by 18s preheatings, needed for being filtrated to get through filtering measuring pump
Processing materials；
S4. the material after preheating is mixed into by distributor and is blow molded by mould, cooled down rapidly in 3s after blowing postforming,
Obtain lampshade finished product.
Further, the condition of freeze-day with constant temperature described in S1 is dry 8h, the bar of the melting mixing in 100 DEG C of insulating boxs
Part is 220 DEG C of melt blending 3min, rotating speed 40r/min.
Further, extrusion condition is in the extruder described in S3：260 DEG C of processing temperature, extruder rotating speed 5r/min.
Further, the composite construction described in S2 is the tow sides that abrasive particle layer is symmetrically set in PET raw materials.
Further, the particle diameter of the frosted particle is 1nm.
Further, the refractive index of the frosted particle is 0.5.
Further, the shrinkage factor of the abrasive particle is less than the shrinkage factor of the PET raw materials.Abrasive particle is received with PET
Shrinkage is different, shrinks to form concave-convex surface during cooling.
Further, the crystallite dimension of the PET raw materials is 2 μm.
Embodiment 4
A kind of blow moiding method of frosted lampshade, it is characterised in that including step in detail below：
S1.PET raw materials and abrasive particle freeze-day with constant temperature, pass through feed system melting mixing；S2. abrasive particle is provided with two layers, with
PET raw materials formation composite construction, extruded machine extrusion；
S3. according to the characteristic of material, required processing temperature is reached by 24s preheatings, needed for being filtrated to get through filtering measuring pump
Processing materials；
S4. the material after preheating is mixed into by distributor and is blow molded by mould, cooled down rapidly in 5s after blowing postforming,
Obtain lampshade finished product.
Further, the condition of freeze-day with constant temperature described in S1 is dry 12h in 120 DEG C of insulating boxs, the melting mixing
Condition is 270 DEG C of melt blending 6min, rotating speed 65r/min.
Further, extrusion condition is in the extruder described in S3：290 DEG C of processing temperature, extruder rotating speed 20r/
min。
Further, the composite construction described in S2 is the tow sides that abrasive particle layer is symmetrically set in PET raw materials.
Further, the particle diameter of the frosted particle is 5nm.
Further, the refractive index of the frosted particle is 1.2.
Further, the shrinkage factor of the abrasive particle is less than the shrinkage factor of the PET raw materials.Abrasive particle is received with PET
Shrinkage is different, shrinks to form concave-convex surface during cooling.
Further, the crystallite dimension of the PET raw materials is 200 μm.
Experimental example
1. the test of light transmittance
From Ward science and technology WTG580 luminous transmittance measurings, by luminous transmittance measuring start preheating 5 minutes, the light transmittance of blank sample is first surveyed,
The purpose for determining blank is correction system, and measurement result just has repeatability and reliability.
Plus blank sample, alignment lightening tube and photosensitive sensor, and the orange line that aligns, select " self-correcting ", light transmittance shows 100%.Temperature
Under the constant environment of degree, the light transmittance of frosted LED lamp cover, alignment lightening tube and photosensitive sensor, and the orange line that aligns, choosing are tested
" test ", that is, show the light transmittance of frosted LED lamp cover, surveys three times, averages.Using PMMA lampshades of the prior art
As a comparison case.
| Experimental group | Light transmittance |
| Embodiment 9 | 92.3% |
| Embodiment 10 | 90.2% |
| Embodiment 11 | 91.7% |
| Comparative example | 83.4% |
2. the evaluation of surface frosted effect
In 18-35 Sui interval crowd of age, 50 people are chosen, whether is lampshade of being tested and assessed by way of naked-eye observation subjective appreciation
With obvious frosted finish effect.Wherein, standards of grading are as shown in the table：
Using the lampshade of embodiment 11 as test specimens, abrasive particle is added as a comparison on PET surface by way of sandblasting
Example, test result is as shown in the table：
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, and do not carrying on the back
In the case of spirit or essential attributes from the present invention, the present invention can be realized in other specific forms.Therefore, no matter from which
From the point of view of a bit, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention will by appended right
Ask rather than described above is limited, it is intended that all changes in the implication and scope of the equivalency of claim will be fallen
Include in the present invention.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.It is noted that the technical characteristic not being described in detail in the present invention, can be by this
Field any prior art is realized.
Claims (8)
1. a kind of blow moiding method of frosted lampshade, it is characterised in that including step in detail below：
S1.PET raw materials and abrasive particle freeze-day with constant temperature, pass through feed system melting mixing；
S2. abrasive particle is provided with two layers, with PET raw materials formation composite construction, extruded machine extrusion；
S3. according to the characteristic of material, required processing temperature is reached by 18-24s preheatings, institute is filtrated to get through filtering measuring pump
The processing materials needed；
S4. the material after preheating is mixed into by distributor and be blow molded by mould, it is rapid cold in 3-5s after blowing postforming
But, lampshade finished product is obtained.
2. the blow moiding method of frosted lampshade according to claim 1, it is characterised in that the condition of freeze-day with constant temperature described in S1
To dry 8-12 h in 100-120 DEG C of insulating box, the condition of the melting mixing is 220-270 DEG C of melt blending 3-6min, is turned
Fast 40-65r/min.
3. the blow moiding method of frosted lampshade according to claim 1, it is characterised in that extruded in the extruder described in S3
Condition is：260-290 DEG C of processing temperature, extruder rotating speed 5-20r/min.
4. the blow moiding method of frosted lampshade according to claim 1, it is characterised in that the composite construction described in S2 is mill
Sand grains sublayer is symmetrically set in the tow sides of PET raw materials.
5. the blow moiding method of frosted lampshade according to claim 1, it is characterised in that the particle diameter of the frosted particle is 1-
5nm。
6. the blow moiding method of frosted lampshade according to claim 1, it is characterised in that the refractive index of the frosted particle is
0.5-1.2。
7. the blow moiding method of frosted lampshade according to claim 1, it is characterised in that the shrinkage factor of the abrasive particle is small
In the shrinkage factor of the PET raw materials.
8. the blow moiding method of frosted lampshade according to claim 1, it is characterised in that the crystallite dimension of the PET raw materials
For 2 μm -200 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286697.7A CN107031020A (en) | 2017-04-27 | 2017-04-27 | A kind of blow moiding method of frosted lampshade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286697.7A CN107031020A (en) | 2017-04-27 | 2017-04-27 | A kind of blow moiding method of frosted lampshade |
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| Publication Number | Publication Date |
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| CN107031020A true CN107031020A (en) | 2017-08-11 |
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ID=59536061
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710286697.7A Pending CN107031020A (en) | 2017-04-27 | 2017-04-27 | A kind of blow moiding method of frosted lampshade |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604211A (en) * | 2012-02-25 | 2012-07-25 | 美的集团有限公司 | Impact-resistant weather-resistant polypropylene material for lamps and manufacturing method thereof |
| CN102943991A (en) * | 2012-11-18 | 2013-02-27 | 高秋桂 | Novel ceiling lamp mask and production method thereof |
| CN105605527A (en) * | 2015-12-31 | 2016-05-25 | 钟莉 | Frosted lampshade with superior frosting property |
| CN205878048U (en) * | 2015-12-31 | 2017-01-11 | 钟莉 | Dull polish lamp shade that optical property is good |
-
2017
- 2017-04-27 CN CN201710286697.7A patent/CN107031020A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604211A (en) * | 2012-02-25 | 2012-07-25 | 美的集团有限公司 | Impact-resistant weather-resistant polypropylene material for lamps and manufacturing method thereof |
| CN102943991A (en) * | 2012-11-18 | 2013-02-27 | 高秋桂 | Novel ceiling lamp mask and production method thereof |
| CN105605527A (en) * | 2015-12-31 | 2016-05-25 | 钟莉 | Frosted lampshade with superior frosting property |
| CN205878048U (en) * | 2015-12-31 | 2017-01-11 | 钟莉 | Dull polish lamp shade that optical property is good |
Non-Patent Citations (2)
| Title |
|---|
| 丁浩: "《塑料工业使用手册》", 31 August 2000, 化学工业出版社 * |
| 王德俊等: "《塑料成型工艺与模具设计》", 30 September 2009, 机械工业出版社 * |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 516000 No. 309 Longsheng Third Road, Daya Bay West District, Huizhou City, Guangdong Province (No. 2 Workshop) Applicant after: Huizhou Silly Bird First Flying Optical Materials Co., Ltd. Address before: 516000 No. 309 Longsheng Third Road, Daya Bay, Huizhou City, Guangdong Province Applicant before: HUIZHOU BENNIAO OPTICAL MATERIAL CO., LTD. |
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Application publication date: 20170811 |