CN1204230A - Protective cover for hand-held telephone set and its making method - Google Patents
Protective cover for hand-held telephone set and its making method Download PDFInfo
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- CN1204230A CN1204230A CN 97120327 CN97120327A CN1204230A CN 1204230 A CN1204230 A CN 1204230A CN 97120327 CN97120327 CN 97120327 CN 97120327 A CN97120327 A CN 97120327A CN 1204230 A CN1204230 A CN 1204230A
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- carbon black
- protective cover
- metal powder
- resin
- diaphragm
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Abstract
The present invention relates to a protective cover for hand-held telephone set and its preparation method. Said protective cover includes composite plastic film made of metal powder, carbon black and resin and pressure-sensitive adhesive layer. The metal powder whose filling mean grain size is 200-350 meshes and carbon black are dispersed in the film whose thickness is 0.1-0.6 mm in the form of stereo-net. Its preparation method includes the following steps: uniformly mixing metal powder, carbon black and resin according to a certain mixing ratio, heating at 105-150 deg.C, cooling, forming and applying pressure-sensitive adhesive layer so as to obtain the invented product with the advantages of multi-layer shielding, resisting electronic pollution and resisting dust, good protective effect and durable service, etc..
Description
The present invention relates to a kind of protecting cover for hand-held telephone set and method for production thereof, belong to the anti-electronic pollution protection device technology of personal handyphone.
The application of personal handyphone provides a great convenience for human information exchanges communication.Because it has broken through the constraint of traditional wire transmission signal, randomness is stronger, so application is more and more many, becomes one of means of communication important in the modern society.Yet its negative effect is also held down and is ignored, and proves through scientific research, and the electronic pollution of personal handyphone impairs user's health, and particularly concerning long-term user, its harm is just more bigger.Existing now micropore metal net type protective cover, its individual layer network structure, shield effectiveness are not good, and fragile, moreover, the dust that floats in the air and use in the dirt that touches also easily attach on the net, more make the protection effect reduction, become a big defective.
The objective of the invention is to overcome above-mentioned weak point of the prior art, provide that a kind of to be multilayer screen, protection effect that the composite plastic diaphragm of space network filling in resin constitute with metal dust and carbon black good, and do not wane lastingly, and be easy to peace and quiet, convenient, the durable protecting cover for hand-held telephone set of dress subsides.
Another object of the present invention provides a kind of preparation method of above-mentioned personal handyphone protective cover.
Protecting cover for hand-held telephone set of the present invention comprises composite plastic diaphragm and the adhesive sticker coating of being made by metal powder, carbon black, plasticizer and resin.The parts by weight proportioning of described each composition of composition composite plastic diaphragm is metal powder 10-30 part, carbon black 3-10 part, plasticizer 50-60 part, resin 50-55 part.
The thickness of described composite plastic diaphragm is at 0.1-0.6mm, and the metal powder of filling and the particle mean size of carbon black are at the 200-350 order.
Metal powder described in the present invention is preferably silver powder and/or brass powder; Described carbon black is preferably acetylene carbon black, and described plasticizer is preferably dibutyl ester, and described resin is preferably polyvinyl chloride or epoxy resin.
The composite plastic diaphragm that the present invention adopts, the metal dust and the carbon black of filling are therebetween built-in, and disperse also is solid netted cross-linked structure, makes protective cover of the present invention have the special effect that multilayer screen large, oblong sheet of silk with an appropriate message attached, protection effect are good, can not go downhill permanently; And preventing dust, it is good to reach antifouling property, is easy to cleaning, durable; The non-drying glue layer that applies makes it dress and pastes conveniently.
The preparation method of protecting cover for hand-held telephone set of the present invention, comprise following processing step: metal powder, carbon black, resin and plasticizer are fully mixed 40-60 minute in blender after, put into and drip the moulding of mold tool: under 105～150 ℃ of temperature conditions, heated 3～5 minutes, after putting into the cold water cooling again, from mould, take out, be the diaphragm of a typing shape, on diaphragm subsides machine side, apply non-drying glue layer then and be finished product.
Composite plastic diaphragm can also adopt and significantly drip moldedly, cuts system by the difformity of being talked about the position shape of walking back and forth again, has equal effect.
The preparation method of protecting cover for hand-held telephone set of the present invention is scientific and reasonable, and is simple, easy to use, durable in use.
Further specify the present invention below in conjunction with embodiment and accompanying drawing.
Accompanying drawing 1 is the cover sheet longitudinal profile schematic diagram of this protecting cover for hand-held telephone set.
Wherein label 1 is a non-drying glue layer, and 2 is composite plastic diaphragm, and 3 is metal dust and hydrocarbon black powder, and 4 are the obedient paper of bag.
Embodiment
A kind of protecting cover for hand-held telephone set is composite plastic diaphragm 2 and the non-drying glue layer of being made by brass powder and acetylene carbon black 3, dibutyl ester and polyvinyl chloride 1 that applies and wraps obedient paper 4 and constituted as shown in Figure 1.The particle mean size of brass powder and carbon black 3 is 260 orders, is disperse and be solid netted crosslinked in the diaphragm 2 of 0.4mm at thickness, constitutes the multiple shield large, oblong sheet of silk with an appropriate message attached.The parts by weight proportioning of wherein forming each composition of diaphragm is: 20 parts in brass powder, 5 parts of acetylene carbon blacks, 60 parts of dibutyl esters, 50 parts of Welvics.This protecting cover for hand-held telephone set can be close to the position of being talked about of personal handyphone, in order to shielding.
Earlier particle mean size is fully mixed stirring 50 minutes at 260 purpose brass powders and acetylene carbon black with the mixture of dibutyl ester and Welvic in blender during preparation, put into again and drip the mold tool, heated 4 minutes down at 130 ℃, putting into cold water then cools off, from mould, take out, be the composite plastic diaphragm that thickness is 0.4mm; The obedient machine side of composite plastic diaphragm is applied non-drying glue layer, attached again to wrap obedient paper, to be the telephone set protective cover that has the more than enough heavy shielding of electromagnetic energy.
Claims (5)
1, a kind of personal handyphone protective cover is characterized in that comprising composite plastic diaphragm and the adhesive sticker coating made by metal powder, carbon black, resin and plasticizer.
2, protective cover as claimed in claim 1, the parts by weight proportioning that it is characterized in that forming the composition of described composite plastic diaphragm is:
Metal powder 10-30 part carbon black 3-10 part
Plasticizer 50-60 part resin 50-55 part.
3, protective cover as claimed in claim 1, the thickness that it is characterized in that described composite plastic diaphragm is 0.1～0.6mm, the particle mean size of described metal powder, carbon black is at the 200-350 order.
4, protective cover as claimed in claim 1 is characterized in that described metal powder is silver and/or brass powder; Described carbon black is an acetylene carbon black; Described plasticizer is a dibutyl ester; Described resin is polyvinyl chloride or epoxy resin.
5, a kind of preparation method of the telephone set protective cover as one of claim 1-4, after it is characterized in that metal powder, carbon black, resin and plasticizer fully mixed 40-60 minute in blender, put into and drip the moulding of mold tool: under 105～150 ℃ of temperature conditions, heated 3～5 minutes, putting into cold water again cools off, from mould, take out, be the diaphragm of a typing shape, on diaphragm subsides machine side, apply non-drying glue layer then and be finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97120327 CN1204230A (en) | 1997-12-08 | 1997-12-08 | Protective cover for hand-held telephone set and its making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97120327 CN1204230A (en) | 1997-12-08 | 1997-12-08 | Protective cover for hand-held telephone set and its making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1204230A true CN1204230A (en) | 1999-01-06 |
Family
ID=5175895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97120327 Pending CN1204230A (en) | 1997-12-08 | 1997-12-08 | Protective cover for hand-held telephone set and its making method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1204230A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100515716C (en) * | 2003-06-18 | 2009-07-22 | 鸿富锦精密工业（深圳）有限公司 | Portable electronic device casing and manufacturing method thereof |
| CN101812214B (en) * | 2009-09-21 | 2010-12-15 | 顾德阳 | Electromagnetic shielding material and preparation method thereof |
| CN104559057A (en) * | 2014-12-17 | 2015-04-29 | 唐华烨 | Engineering conductive plastic and preparation method thereof |
| CN105744818A (en) * | 2016-02-03 | 2016-07-06 | 中电海康集团有限公司 | Flexible magnetic shielding and anti-irradiation film |
| US10883996B2 (en) | 2015-06-18 | 2021-01-05 | UCB Biopharma SRL | Methods of identifying signaling modulators of the trimeric TNFa |
-
1997
- 1997-12-08 CN CN 97120327 patent/CN1204230A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100515716C (en) * | 2003-06-18 | 2009-07-22 | 鸿富锦精密工业（深圳）有限公司 | Portable electronic device casing and manufacturing method thereof |
| CN101812214B (en) * | 2009-09-21 | 2010-12-15 | 顾德阳 | Electromagnetic shielding material and preparation method thereof |
| CN104559057A (en) * | 2014-12-17 | 2015-04-29 | 唐华烨 | Engineering conductive plastic and preparation method thereof |
| US10883996B2 (en) | 2015-06-18 | 2021-01-05 | UCB Biopharma SRL | Methods of identifying signaling modulators of the trimeric TNFa |
| US11448655B2 (en) | 2015-06-18 | 2022-09-20 | UCB Biopharma SRL | Method for identifying a modulator of the TNFα or CD40L interaction with their cognate receptors |
| US11674967B2 (en) | 2015-06-18 | 2023-06-13 | UCB Biopharma SRL | Method of identifying potential inhibitors of APO TNFα trimers |
| CN105744818A (en) * | 2016-02-03 | 2016-07-06 | 中电海康集团有限公司 | Flexible magnetic shielding and anti-irradiation film |
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| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |