CN102510651A - Method for eliminating static electricity on surface of film during preparation of film - Google Patents
Method for eliminating static electricity on surface of film during preparation of film Download PDFInfo
- Publication number
- CN102510651A CN102510651A CN2011103522688A CN201110352268A CN102510651A CN 102510651 A CN102510651 A CN 102510651A CN 2011103522688 A CN2011103522688 A CN 2011103522688A CN 201110352268 A CN201110352268 A CN 201110352268A CN 102510651 A CN102510651 A CN 102510651A
- Authority
- CN
- China
- Prior art keywords
- film
- brush
- metallic
- metallic brush
- static
- 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.)
- Granted
Links
Images
Landscapes
- Moulding By Coating Moulds (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention discloses a method for eliminating static electricity on the surface of a film during preparation of the film. The method comprises the following steps of: after the film is peeled off by a strip-type or drum-shaped endless supporting body, arranging a metal brush on a path where the film continuously operates, wherein distance between the top of a brush head of the metal brush and the surface of the film does not exceed 0.75 inches; and electrically connecting two ends of the metal brush and film production equipment. The method is easy to operate and high in degree of safety, the static electricity on the surface of the film can be effectively eliminated, and the safety of film production and the yield of the film are improved.
Description
Technical field
The present invention relates to a kind of production method of film, particularly a kind of method that in film preparation, derives film surface static.
Background technology
Cellulose triacetate film (be called for short TAC optical thin film), with its good optical isotropism, transparency height and breathable moisture permeability good etc. characteristics, be used for LCD (LCD) field with can not be substituted.
The TAC film generally adopts the solution casting method preparation; Being about to cellulose triacetate, plasticizer, each analog assistant etc. is dissolved in the solvent; Form the high cotton glue of viscosity; Then thickness cotton glue curtain coating for no reason on the support, is formed film through series of processes such as super-dry, rollings at band shape or cydariform.
In the film production process, from the stripping process of steel band, in the drawing process, in drying and the wrapup procedure, film surface can produce serious static focus like: wet film.The generation of static is assembled, and is easy to generate following problem: (1) produces spark, security incident occurs in causing producing; (2) dust particle is adsorbed onto film surface, forms " pressure wound " flaw, influence the product apparent mass, reduce rate of finished products at film surface.
In the film production process; For eliminating or derive the static of film surface, adopt following method usually: static eraser is installed in (1) on production equipment, as carbon brush class electrostatic equipment is installed; This method exists following shortcoming: a. to operate inconvenience, injures steel band easily; B. carbon brush damages easily and is aging, has the carbon brush silk to fall often and is drawn onto film surface, influences the film apparent mass; C. special fixed support need be installed, use the zone to be restricted.(2) use the ion wind rod, but be to use this type of device, have following problem: one side need compressed air as source of the gas, power supply as installation accessories, install and use and receive equally that area of space limits and the restriction of compressed air purification filtering; In explosion-proof production environment, install and use this type of device on the other hand, must satisfy the explosion-proof technology condition, thereby make device relatively expensive, invest greatlyyer, cause the production cost of products rising, influence the competitiveness of product in market.
Summary of the invention
The technical problem that the present invention will solve provides a kind of method that in film preparation, derives film surface static, and this method can effectively derive the static of film surface, and is simple to operate, and safe coefficient is high, can improve fail safe and the yield of film in the film production.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of method that in film preparation, derives film surface static; It is at film after support is peeled off for no reason by band shape or cydariform; Film continuously operation metallic brush is installed on the film path of process; The brush top of metallic brush and the distance between the film surface are for being no more than 0.75 inch, and the two ends of metallic brush are electrically connected with film production equipment.
The brush top and the distance between the film of said metallic brush are 0.1～0.5 inch.
Said metallic brush is set in parallel at least one side of film.
Said metallic brush is made up of metallic framework, conductive filament and brush, and brush is radial arrangement with respect to metallic framework.
The material of said metallic brush is stainless steel, copper or titanium.
Compared with prior art, the present invention has following advantage:
1. do not change the structure of existing equipment, do not need extra new fixed support and the equipment appurtenance of once adding, install and use the zone and do not receive the big or small restriction in space, simple to operate, flexible for installation, cheap;
2. the metallic brush once mounting can be used for a long time and need not change, and use is not fragile and aging;
3. can use in explosion-proof district, also can use, satisfy the safety in production demand in non-explosion-proof district;
4. can effectively eliminate or derive the static of film surface, eliminate electrostatic spark or suppress electrostatic precipitation, play the safeguard protection effect, prevent the formation of pressure wound, effectively improve rate of finished products.
Description of drawings
Fig. 1 is a film preparation process sketch map of the present invention;
Fig. 2 is the profile of metallic brush;
Fig. 3 is the position view that is provided with of metallic brush.
Each label list is shown among the figure: cavity 4, stainless steel band 5, wet film 6, stripper roll 7, stretching-machine 8, drying box 9, knurling rolls 10, metallic brush 11 are chewed in metallic framework 1, conductive filament 2, brush 3, extruding.
Embodiment
Among the present invention, film forming matter preferably has optically isotropic preferably material.For this reason, the material of making film among the present invention is a cellulose esters, preferably uses acylated cellulose, is more preferably cellulose acetate, is specially Triafol T, and particularly the acetyl degree is the cellulose triacetate of 57.5%-62.5%.
Among the present invention, the preparation process of TAC film is following:
Celloidin solution (that is: cellulose triacetate solution) is through the laggard extruding mouth cavity of going into casting machine of accurate measurement, and uniform spreading forms the liquid film of uniform in thickness to the stainless steel band of continuous running under certain pressure; Liquid film becomes the wet film with certain support force behind heated-air drying and shaping, wet film relies on stripper roll to peel off; Wet film after peeling off is through preliminarily dried after-drawing typing, and the film after the typing need further be sent into drying box and carry out drying, obtains the TAC film through side cut, embossing, rolling.
In the film production process, on the one hand, when wet film was peeled off steel band through stripper roll, film surface can be assembled serious static, produced with electrostatic spark simultaneously, under explosion-proof production environment, can cause the production safety accident; On the other hand; Through through preliminarily dried after-drawing typing and when further dry, film surface can static electricity gathered will be adsorbed onto the surface less than the dust particle of 1mm apart from the diameter in the film 1000mm, form pressure wound at wet film; Product quality is constituted a threat to, thereby can greatly reduce rate of finished products.Therefore, must eliminate the static of film surface, perhaps static derived from film surface.
For static is derived from film surface; The present invention takes after film is peeled off from steel band; Film continuously operation metallic brush is installed on the film path of process method; The brush top and the distance between the film surface of metallic brush are greater than 0 inch, and promptly the brush top of metallic brush can not contact with film, if contact can scratch film surface; The brush top of metallic brush and the distance between the film be less than 0.75 inch, if between distance too big, then do not reach the effect of eliminating static; The brush top of metallic brush and the distance between the film are preferably between the 0.1-0.5 inch.
The metallic framework of metallic brush and face laterally arrange and keep 0-45 ° angle, preferably laterally arrange with the thin-film width direction and maintenance level (0 °); The length of metallic brush preferably should be basic identical with thin-film width, if wide, there is no need, if narrow, then do not have the effect that static is derived; Metallic brush is arranged at least one side of film.
Metallic brush among the present invention is made up of metallic framework 1, conductive filament 2, brush 3, and the brush 3 of metallic brush is radial arrangement with respect to metallic framework 1, and is as shown in Figure 4.
Metallic brush material among the present invention can be used any metal material, can use stainless steel, copper or titanium, and preferred conduction silk material is a copper.
Among the present invention, the two ends of metallic brush are connected with the intrinsic guide shaft support of equipment, both can directly be wrapped on the support, also can utilize the fixing point of the guide shaft on the support, perhaps other operable fixed form.
Among the present invention, metallic brush the position is set and quantity is unrestricted, as long as can satisfy the demand of eliminating or deriving static.For preventing because of static focus produces the electrostatic spark zone, metallic brush can be arranged near the stripper roll, stretching-machine inlet, stretching-machine outlet etc. are located; For preventing the harmful dust of gathering absorption of static, can metallic brush be set in the zone of cutting edge, embossing is prone to product dirt, also can brush be set at the drying stage any part.
Below in conjunction with specific embodiment the present invention is further described, but is not limited to this.
The preferred triacetate fiber ester of the present invention is that primary raw material prepares celloidin solution (that is: cellulose triacetate solution); Celloidin solution is chewed cavity 4 through the laggard extruding of going into casting machine of accurate measurement; Uniform spreading forms the liquid film of uniform in thickness to the stainless steel band 5 of continuous running under certain pressure; Liquid film becomes the wet film 6 with certain support force behind heated-air drying and shaping, wet film 6 relies on stripper roll 7 to peel off; Wet film drawn machine 8 typings after peeling off, the film after the typing is sent into drying box 9 and is carried out cutting edge after the high temperature drying, obtains the TAC film through knurling rolls 10 rollings.
For preventing static focus production electrostatic spark, after wet film 6 is peeled off, near peeling off rod 7 optional positions; In wet film 6 both sides a metallic brush 11 is set respectively respectively, the two ends of metallic brush 11 are connected with the intrinsic support of equipment, tensioning, and the top of metallic brush brush and the distance between the film are 0.5 inch; Metallic brush 11 is parallel with wet film and the horizontal direction setting; Metallic brush length and thin-film width are basic identical, and the brush of metallic brush is radial arrangement, and metallic brush 11 is processed for stainless steel.
For preventing that static focus from forming pressure wound and reducing film quality, the optional position before drying box 9, before the knurling rolls 10 respectively is provided with a metallic brush 11 in the both sides of wet film; The two ends of metallic brush 11 are connected with the intrinsic support of equipment, tensioning; The top of the brush of metallic brush and the distance between the wet film are 0.5 inch, and metallic brush and wet film face laterally arrange in horizontal direction, and metallic brush 11 length are identical with the wet film width; The brush 3 of metallic brush is radial arrangement, and metallic brush 11 is processed for stainless steel.
Film quality defective to film surface static is monitored, static is caused is tested, and carries out the yield data statistics.
The film production process with embodiment 1.
For preventing static focus production electrostatic spark, after wet film 6 is peeled off, near peeling off near rod 7 optional positions; In wet film one side three metallic brush 11 are set, the two ends of metallic brush are connected with the intrinsic support of equipment, tensioning, and the brush top and the distance between the wet film 6 of metallic brush are 0.75 inch; Metallic brush and wet film be 6 parallel, axially be the 45 setting with wet film; The length of metallic brush is identical with the wet film width, and the metallic brush brush is radial arrangement, and the material of metallic brush is a copper.
For preventing that static focus from forming pressure wound and reducing film quality, optional position before drying box 9, before the knurling rolls 10 respectively is provided with 2 metallic brush 11 in a side of wet film; The two ends of metallic brush are connected with the intrinsic support of equipment, tensioning; The brush top and the distance between the wet film of metallic brush are 0.75 inch, and metallic brush is parallel with wet film, axially be the 45 setting with wet film, and metallic brush length is identical with thin-film width; Metallic brush brush 3 is radial arrangement, and the material of metallic brush is a copper.
Film quality defective to film surface static is monitored, static is caused is tested, and carries out the yield data statistics.
The film production process is with embodiment 1.
For preventing static focus production electrostatic spark, after wet film 6 is peeled off, near peeling off rod 7 optional positions; In the both sides of wet film 62 metallic brush are set respectively, the two ends of metallic brush 11 are connected with the intrinsic support of equipment, tensioning, and the brush top and the distance between the film of metallic brush are 0.1 inch; Metallic brush 11 is parallel with wet film, axially be 30 ° of angular direction with wet film is provided with; Metallic brush length is identical with thin-film width, and metallic brush brush 3 is radial arrangement, and the material of metallic brush is a titanium.
For preventing that static focus from forming pressure wound and reducing film quality, optional position before drying box 9, before the knurling rolls 10, the wet film both sides respectively are provided with 2 metallic brush 11; The two ends of metallic brush are connected with the intrinsic support of equipment, tensioning; The brush top and the distance between the film of metallic brush are 0.1 inch, and metallic brush is parallel with the wet film direction, axially be 30 ° of angles with wet film is provided with, and metallic brush length is identical with the wet film width; The metallic brush brush is radial arrangement, and the material of metallic brush is a titanium.
Film quality defective to film surface static is monitored, static is caused is tested, and carries out the yield data statistics.
Comparative Examples
The film production process is with embodiment 1.
For forming contrast with the good result of using static bruss to produce, in Comparative Examples, do not use metallic brush fully, the film quality defective that film surface static is monitored, static is caused is tested, and carry out the yield data statistics.
Table 1:
The method of testing of each item performance is following in the table:
1. electrostatic detection:
Adopt the DWJ-81 of Shanghai Electronic Instrument Factory electrometer to detect.
2. fail safe detects:
The closing device interior lighting, whether visualization under the black full state has static petard flower to produce at explosion-proof area.
3. film quality detects:
Range estimation or microscopically viewing film are apparent.
Claims (5)
1. method that in film preparation, derives film surface static; It is characterized in that; It is at film after support is peeled off for no reason by band shape or cydariform; Film continuously operation metallic brush is installed on the film path of process, the brush top of metallic brush and the distance between the film surface are for being no more than 0.75 inch, the two ends of metallic brush are electrically connected with film production equipment.
2. method according to claim 1 is characterized in that, the brush top and the distance between the film of said metallic brush are 0.1～0.5 inch.
3. method according to claim 2 is characterized in that, said metallic brush is set in parallel at least one side of film.
4. method according to claim 3 is characterized in that, said metallic brush is made up of metallic framework (10), conductive filament (2) and brush (3), and brush (3) is radial arrangement with respect to metallic framework (1).
5. method according to claim 4 is characterized in that, the material of said metallic brush is stainless steel, copper or titanium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110352268.8A CN102510651B (en) | 2011-11-09 | 2011-11-09 | Method for eliminating static electricity on surface of film during preparation of film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110352268.8A CN102510651B (en) | 2011-11-09 | 2011-11-09 | Method for eliminating static electricity on surface of film during preparation of film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102510651A true CN102510651A (en) | 2012-06-20 |
| CN102510651B CN102510651B (en) | 2015-04-15 |
Family
ID=46222694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110352268.8A Active CN102510651B (en) | 2011-11-09 | 2011-11-09 | Method for eliminating static electricity on surface of film during preparation of film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102510651B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538849A (en) * | 2015-12-18 | 2016-05-04 | 河南银金达彩印股份有限公司 | Processing technology of antistatic anti-powder flour packing bag |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4741942A (en) * | 1985-12-04 | 1988-05-03 | Xerox Corporation | Electrostatic charging and cleaning brushes |
| EP0402338A1 (en) * | 1989-06-05 | 1990-12-12 | Ake Wigrens El-Mekaniska Ab | Method and apparatus for neutralising electrostatic charges on a movable web |
| US5625468A (en) * | 1994-01-20 | 1997-04-29 | Fuji Photo Film Co., Ltd. | Film image input system with a grounded conductive member contacting a film portion other than a photographic exposure surface, to remove unwanted static electricity |
| US6252757B1 (en) * | 1999-07-23 | 2001-06-26 | Ultrafab, Inc. | Static brushes and methods of fabricating same |
| CN1369743A (en) * | 2001-02-09 | 2002-09-18 | 诺日士钢机株式会社 | Film cleaner |
| JP2005285684A (en) * | 2004-03-30 | 2005-10-13 | Nippon Seisen Co Ltd | Discharging brush |
| JP2010176963A (en) * | 2009-01-28 | 2010-08-12 | Achilles Corp | Discharging brush |
-
2011
- 2011-11-09 CN CN201110352268.8A patent/CN102510651B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4741942A (en) * | 1985-12-04 | 1988-05-03 | Xerox Corporation | Electrostatic charging and cleaning brushes |
| EP0402338A1 (en) * | 1989-06-05 | 1990-12-12 | Ake Wigrens El-Mekaniska Ab | Method and apparatus for neutralising electrostatic charges on a movable web |
| US5625468A (en) * | 1994-01-20 | 1997-04-29 | Fuji Photo Film Co., Ltd. | Film image input system with a grounded conductive member contacting a film portion other than a photographic exposure surface, to remove unwanted static electricity |
| US6252757B1 (en) * | 1999-07-23 | 2001-06-26 | Ultrafab, Inc. | Static brushes and methods of fabricating same |
| CN1369743A (en) * | 2001-02-09 | 2002-09-18 | 诺日士钢机株式会社 | Film cleaner |
| JP2005285684A (en) * | 2004-03-30 | 2005-10-13 | Nippon Seisen Co Ltd | Discharging brush |
| JP2010176963A (en) * | 2009-01-28 | 2010-08-12 | Achilles Corp | Discharging brush |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105538849A (en) * | 2015-12-18 | 2016-05-04 | 河南银金达彩印股份有限公司 | Processing technology of antistatic anti-powder flour packing bag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102510651B (en) | 2015-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205685413U (en) | A kind of slitting paper dust arrester | |
| CN204451133U (en) | Tubing cutting system | |
| CN102510651A (en) | Method for eliminating static electricity on surface of film during preparation of film | |
| CN206947048U (en) | Cable air-dry apparatus | |
| CN104259148A (en) | Automatic dust removing device and method for surface of steel wire | |
| CN202083639U (en) | Chemical fiber spinning spinneret precise detector | |
| CN114446549B (en) | Wire wrapping machine | |
| CN204036953U (en) | A kind of chemical fiber paper tube numerical control finishing machine top | |
| CN116067776A (en) | Release film tension detection device and detection method thereof | |
| CN106256525A (en) | The manufacture method of resin molding | |
| CN204496136U (en) | Anti-static device and flat pannel display manufacturing equipment | |
| CN206495090U (en) | A kind of suction rim charge device of non-woven fabric production equipment | |
| CN210886330U (en) | Air equalizing plate for fiber yarn cooling device | |
| CN102774125A (en) | Wide fiber widening arrangement equipment | |
| JP5820410B2 (en) | Manufacturing method of optical film | |
| CN206552936U (en) | A kind of SERVO CONTROL roll paper dividing and cutting machine | |
| CN102637103A (en) | Conducting layer of touch screens and manufacturing process of conducting layer | |
| CN219306024U (en) | ZJ112 type cigarette making machine die box and detection device | |
| CN205436495U (en) | Aluminum surface dust collector | |
| CN202989386U (en) | Rabbit hair carding machine | |
| CN210154561U (en) | PBT pipe on-line monitoring device | |
| CN201789677U (en) | Film static eliminating device | |
| CN203700478U (en) | Novel welding strip scraper device | |
| CN217432563U (en) | Dust collector for powder coating production workshop | |
| CN213968334U (en) | Aluminum foil stain removing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: South Street, new urban lucky 071054 Hebei province Baoding City No. 6 Applicant after: China Lucky Group Corporation Address before: 071054 Kennan street, Hebei, Baoding, No. 6 Applicant before: Chinese Lekai Film Group Co |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: CHINESE LEKAI FILM GROUP CO TO: CHINA LUCKY GROUP CORPORATION |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220228 Address after: 223800 100 meters south of the intersection of Yongjin road and Kexing Road, development zone, Sucheng District, Suqian City, Jiangsu Province Patentee after: Photoelectric materials Co.,Ltd. Address before: 071054 No. 6 Lekanan Street, Baoding New City, Hebei Province Patentee before: CHINA LUCKY Group Corp. |
|
| TR01 | Transfer of patent right |