CN104999600A - Method for processing polyurethane mold surface through Teflon coating - Google Patents
Method for processing polyurethane mold surface through Teflon coating Download PDFInfo
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- CN104999600A CN104999600A CN201510431985.8A CN201510431985A CN104999600A CN 104999600 A CN104999600 A CN 104999600A CN 201510431985 A CN201510431985 A CN 201510431985A CN 104999600 A CN104999600 A CN 104999600A
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- teflon coating
- polyurethane mould
- polyurethane
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Abstract
The invention discloses a method for processing a polyurethane mold surface through a Teflon coating. The method comprises the steps that the polyurethane mold surface is degreased; sand blasting is carried out on the degreased polyurethane mold surface, and then the Teflon coating is sprayed on the polyurethane mold surface; the Teflon coating sprayed on the polyurethane mold surface is heated; 5, the Teflon coating is sprayed on the polyurethane mold surface for the second time on which melting processing is carried out; and 6, the Teflon coating on the polyurethane mold surface processed in the step 5 is molten. The Teflon coating has the advantages of inadhesion, heat resistance, sliding performance, moisture resistance, abrasion resistance and corrosion resistance. The polyurethane mold surface coated with the Teflon coating which can be used repeatedly after coating is performed one time. The trouble that coating of a mold release agent needs to be carried out every time molds are released is saved; the production process is simplified, production efficiency is improved, production cost is reduced, and no harm is produced to the human body and environment.
Description
Technical field
The present invention relates to the treatment process of polyurethane mould, be specifically related to the method utilizing Teflon coating process polyurethane mould surface.
Background technology
Polyurethane material has excellent adhesive property, and this character is disadvantageous in foams molding.In the production of the goods such as molded polyurethane foam, cast urethane elastomer, all adopt iron mould.In order to successfully take out goods from mould rapidly, releasing agent must be used, and the releasing agent of the normal application type of hydroxyl must apply once before often shaping, operation is loaded down with trivial details, consume a large amount of manpower and materials, general releasing agent is harmful and not environmentally, nontoxic releasing agent high expensive, use still has certain limitation.
Summary of the invention
The present invention is directed to the problems of the prior art, provide the method utilizing Teflon coating process polyurethane mould surface.
For solving the problems of the technologies described above, the invention provides a technical scheme is: the method utilizing Teflon coating process polyurethane mould surface, comprises the following steps:
(1) degrease process is carried out to the surface of polyurethane mould;
(2) blasting treatment is carried out to the surface of the polyurethane mould removing grease;
(3) Teflon coating is sprayed to the surface of the polyurethane mould after sandblasting;
(4) the Teflon coating on the surface being injected in polyurethane mould is heated.
Also comprise step:
(5) surface of the polyurethane mould after melt process is carried out to the process of secondary injection Teflon coating.
(6) the Teflon coating on the surface of the polyurethane mould after step (5) process is carried out to the process of melt process.
Degrease be treated to polyurethane mould is placed in 400-450 DEG C baking oven in dry 4-5 hour.
Blasting treatment is air pressure blasting treatment, and the material of this air pressure blasting treatment is diamond dust.
The condition of air pressure blasting treatment: the order number of diamond dust is 80-120 order, and pressure is 80-100pis.
When spraying Teflon coating, under the environment of 15-30 DEG C, Teflon coating is evenly sprayed the surface in polyurethane mould.
During secondary injection Teflon coating, under the environment of 15-30 DEG C, Teflon coating evenly sprays the surface in polyurethane mould.
The condition heated: at 150-180.DEG C baking oven in dry 1-2 hour.
The condition of melt process: dry 4-5 hour in the baking oven of 380-400 DEG C.
The thickness of the Teflon dope layer that the surface of polyurethane mould is formed by Teflon coating is 20 ± 5 microns.
The invention has the beneficial effects as follows: Teflon coating has not viscosity, heat resistance, sliding, moisture resistance, the advantage of mar proof and corrosion resistance, be applied to the surface of polyurethane mould, can use repeatedly after coating once, eliminate the trouble that the demoulding is once coated with a releasing agent, simplify production process, enhance productivity, reduce production cost, and human body and environment are all safe from harm.
Detailed description of the invention
Below in conjunction with embodiment, the specific embodiment of the present invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
Polyurethane mould made of iron is put into baking oven, temperature in this baking oven is 400 DEG C, dry and thoroughly can remove grease after 4 hours, be diamond dust air pressure blasting treatment under the pressure of 80pis of 80-120 again with order number, under the room temperature of 15 to 30 DEG C, the Teflon coating stirred with high speed agitator is loaded BINKSBULLOWS 630 type spray gun, evenly spray at die surface, after first time spray is good, polyurethane mould is put into temperature is that in the baking oven of 150 DEG C, heating is heated for 1 hour, after taking out cooling, secondary injection Teflon coating is carried out to this polyurethane mould, even injection, after injection completes, putting it into temperature is that in the baking oven of 380 DEG C, heating makes melt process in 4 hours, take out after the complete melting of coating and cool.
The performance quality of coating depends on perfect surface preparation, enough surface adhesion forces are obtained on the surface of polyurethane mould in order to make coating, must guarantee that the surface of polyurethane mould is not containing dust, dirt, grease, washing agent, iron rust and grains of sand, so just can obtain good adhesion effect and intact coating, coating must guarantee completely evenly after just can reach best coating result, spray gun must keep dry and comfortable, when coating, absolutely no smoking, preferably spray in the space of being furnished with suitable exhaust equipment, should avoid sucking the fog volatilized when sintering, suitable safeguard should be dressed in every operation.
For a person skilled in the art; still can the technical scheme described in foregoing embodiments be modified; or equivalent replacement is carried out to wherein portion of techniques feature; within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. utilize the method on Teflon coating process polyurethane mould surface, it is characterized in that, comprise the following steps:
(1) degrease process is carried out to the surface of polyurethane mould;
(2) blasting treatment is carried out to the surface of the polyurethane mould removing grease;
(3) Teflon coating is sprayed to the surface of the polyurethane mould after sandblasting;
(4) the Teflon coating on the surface being injected in polyurethane mould is heated.
2. utilize the method on Teflon coating process polyurethane mould surface as claimed in claim 1, it is characterized in that, also comprise step:
(5) surface of the polyurethane mould after melt process is carried out to the process of secondary injection Teflon coating.
(6) the Teflon coating on the surface of the polyurethane mould after step (5) process is carried out to the process of melt process.
3. utilize the method on Teflon coating process polyurethane mould surface as claimed in claim 1 or 2, it is characterized in that, degrease be treated to polyurethane mould is placed in 400-450 DEG C baking oven in dry 4-5 hour.
4. utilize the method on Teflon coating process polyurethane mould surface as claimed in claim 1 or 2, it is characterized in that, blasting treatment is air pressure blasting treatment, and the material of this air pressure blasting treatment is diamond dust.
5. utilize the method on Teflon coating process polyurethane mould surface as claimed in claim 4, it is characterized in that, the condition of air pressure blasting treatment: the order number of diamond dust is 80-120 order, and pressure is 80-100pis.
6. utilize the method on Teflon coating process polyurethane mould surface as claimed in claim 1, it is characterized in that, when spraying Teflon coating, under the environment of 15-30 DEG C, Teflon coating is evenly sprayed the surface in polyurethane mould.
7. utilize the method on Teflon coating process polyurethane mould surface as claimed in claim 1, it is characterized in that, during secondary injection Teflon coating, under the environment of 15-30 DEG C, Teflon coating evenly sprays the surface in polyurethane mould.
8. utilize the method on Teflon coating process polyurethane mould surface as claimed in claim 1 or 2, it is characterized in that, the condition of heating: in the baking oven of 150-180 DEG C, dry 1-2 hour.
9. utilize the method on Teflon coating process polyurethane mould surface as claimed in claim 2, it is characterized in that, the condition of melt process: in the baking oven of 380-400 DEG C, dry 4-5 hour.
10. utilize the method on Teflon coating process polyurethane mould surface as claimed in claim 1, it is characterized in that, the thickness of the Teflon dope layer that the surface of polyurethane mould is formed by Teflon coating is 20 ± 5 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510431985.8A CN104999600A (en) | 2015-07-16 | 2015-07-16 | Method for processing polyurethane mold surface through Teflon coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510431985.8A CN104999600A (en) | 2015-07-16 | 2015-07-16 | Method for processing polyurethane mold surface through Teflon coating |
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| CN104999600A true CN104999600A (en) | 2015-10-28 |
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| CN201510431985.8A Pending CN104999600A (en) | 2015-07-16 | 2015-07-16 | Method for processing polyurethane mold surface through Teflon coating |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000807A (en) * | 2016-07-14 | 2016-10-12 | 太仓德宝玩具制品有限公司 | Surface treatment method used for paint spraying mold in toy production |
| CN107498816A (en) * | 2017-07-10 | 2017-12-22 | 广州敬信高聚物科技有限公司 | A kind of electric wire extrusion molding mould and preparation method thereof |
| CN108067411A (en) * | 2016-11-14 | 2018-05-25 | 宁波江丰电子材料股份有限公司 | The brushing method of casting tool |
| CN108851265A (en) * | 2017-05-08 | 2018-11-23 | 苏州美山子制衣有限公司 | A kind of production method of vertical continuous mold cup |
| CN108943524A (en) * | 2018-07-06 | 2018-12-07 | 吉林大学 | A kind of production method of polyurethane blowing mold surface anti sticking coating |
| CN109926296A (en) * | 2019-04-08 | 2019-06-25 | 深圳市南锐电气技术有限公司 | For processing HV cable accessories die mandrel spraying process |
| CN112547461A (en) * | 2020-11-03 | 2021-03-26 | 江西中竹生物质科技有限公司 | Method for coating teflon on surface of mold |
Citations (3)
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| JP2012196876A (en) * | 2011-03-22 | 2012-10-18 | Sekisui Plastics Co Ltd | Mold for continuous heat molding of resin sheet and its recipe, and resin molding and its production process |
| CN104108154A (en) * | 2014-07-18 | 2014-10-22 | 浙江衢州祥光橡塑有限公司 | Foaming forming production line for polyurethane |
| CN104149253A (en) * | 2014-06-25 | 2014-11-19 | 裕克施乐塑料制品（太仓）有限公司 | Thermoplastic polyurethane elastomer foaming material forming device and thermoplastic polyurethane elastomer foaming material forming method |
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Patent Citations (3)
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| JP2012196876A (en) * | 2011-03-22 | 2012-10-18 | Sekisui Plastics Co Ltd | Mold for continuous heat molding of resin sheet and its recipe, and resin molding and its production process |
| CN104149253A (en) * | 2014-06-25 | 2014-11-19 | 裕克施乐塑料制品（太仓）有限公司 | Thermoplastic polyurethane elastomer foaming material forming device and thermoplastic polyurethane elastomer foaming material forming method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106000807A (en) * | 2016-07-14 | 2016-10-12 | 太仓德宝玩具制品有限公司 | Surface treatment method used for paint spraying mold in toy production |
| CN108067411A (en) * | 2016-11-14 | 2018-05-25 | 宁波江丰电子材料股份有限公司 | The brushing method of casting tool |
| CN108851265A (en) * | 2017-05-08 | 2018-11-23 | 苏州美山子制衣有限公司 | A kind of production method of vertical continuous mold cup |
| CN107498816A (en) * | 2017-07-10 | 2017-12-22 | 广州敬信高聚物科技有限公司 | A kind of electric wire extrusion molding mould and preparation method thereof |
| CN108943524A (en) * | 2018-07-06 | 2018-12-07 | 吉林大学 | A kind of production method of polyurethane blowing mold surface anti sticking coating |
| CN108943524B (en) * | 2018-07-06 | 2019-07-05 | 吉林大学 | A kind of production method of polyurethane blowing mold surface anti sticking coating |
| CN109926296A (en) * | 2019-04-08 | 2019-06-25 | 深圳市南锐电气技术有限公司 | For processing HV cable accessories die mandrel spraying process |
| CN112547461A (en) * | 2020-11-03 | 2021-03-26 | 江西中竹生物质科技有限公司 | Method for coating teflon on surface of mold |
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Application publication date: 20151028 |
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