CN106182721A - A kind of production method of pre-coating film basement membrane - Google Patents
A kind of production method of pre-coating film basement membrane Download PDFInfo
- Publication number
- CN106182721A CN106182721A CN201610556008.5A CN201610556008A CN106182721A CN 106182721 A CN106182721 A CN 106182721A CN 201610556008 A CN201610556008 A CN 201610556008A CN 106182721 A CN106182721 A CN 106182721A
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- CN
- China
- Prior art keywords
- raw material
- carried out
- basement membrane
- thin film
- production method
- 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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
- B29C55/14—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively
- B29C55/143—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial successively firstly parallel to the direction of feed and then transversely thereto
-
- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
- B29C41/26—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length by depositing flowable material on a rotating drum
-
- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
The invention discloses the production method of a kind of pre-coating film basement membrane, step includes: (1) pretreatment of raw material；(2) raw material is sent into smelting furnace and carries out high-temperature fusion process, then fused raw material is extruded；(3) fused raw material of extrusion is carried out slab, cool down after forming casting film sheet and through tank；(4) first casting film sheet is sent into vertical machine drawing and is carried out longitudinal stretching, is then re-fed into transverse stretching machine and carries out cross directional stretch and become thin film；(5) thin film being carried out thickness measuring, if undesirable, repeat (4), if meeting the requirements, then carrying out trimming after traction；(6) thin film is carried out dedusting；(7) rolling, cut, packaging warehouse-in after foreign bodies detection.It is an advantage of the current invention that contractibility is good, thickness is uniformly good and has splendid operating flexibility.
Description
Technical field
The present invention relates to the production method of a kind of pre-coating film basement membrane, be mainly used in the production technical field of pre-coating film.
Background technology
Pre-coating film basement membrane can use multiple production technology to produce, predominantly the production of curtain coating (Cast) method, inflation
(inflation) method produces.Curtain coating (Cast) method is resin extruded machine fusion plastification, is squeezed by slit-type die orifice from head
Go out, make melt be close on cooling roller, the most again through peeling off, position is stretched, cut, batch and obtain finished product, includes extrudate flow
Prolong film and solvent cast film two kinds.Plastics are first extruded into pipe by inflation method extrusion molding, then make by the air being blown in pipe
It expand into the tubular membrane of certain size continuously, according to extrusion and the difference of lead, is divided into following three types: above blow
Method, flat blowing method, lower blowing method.But both approaches all also exists certain defect, therefore research and development one is more suitable for precoating
The production method of film basement membrane is necessary.
Summary of the invention
The technical problem to be solved in the present invention is to provide the production method of a kind of pre-coating film basement membrane, uses biaxial tension method,
Make that contractibility is good, thickness is uniformly good and has splendid operating flexibility.
The present invention is achieved through the following technical solutions.
A kind of production method of pre-coating film basement membrane, step includes:
(1) pretreatment of raw material；
(2) raw material is sent into smelting furnace and carries out high-temperature fusion process, then fused raw material is extruded；
(3) fused raw material of extrusion is carried out slab, cool down after forming casting film sheet and through tank；
(4) first casting film sheet is sent into vertical machine drawing and is carried out longitudinal stretching, is then re-fed into transverse stretching machine and carries out cross directional stretch and become thin film；
(5) thin film being carried out thickness measuring, if undesirable, repeat (4), if meeting the requirements, then carrying out trimming after traction；
(6) thin film is carried out dedusting；
(7) rolling, cut, packaging warehouse-in after foreign bodies detection.
Further, the operation of (3) slab is: by the fused raw material of extrusion under pressure promotes, by elongated mouth
Film, under external force, makes molten plastic be attached to rapidly the basement membrane making solid-state sheet material on sharp cooling roll surface.
Further, (3) External Force Acting selects airflow function.
Further, after (5) trimming, thin film is carried out sided corona treatment, then carries out eliminostatic process.
Further, (6) dust removal operation is: use non-uniform electric field, forms corona discharge and produces plasma, at electric field
Under the effect of gradient, with the particulate pollutant generation inelastic collision in air adhering to, make charged ion, additional
Electric field force, collected by dust collecting electrode.
Beneficial effects of the present invention:
Use biaxial tension method to can be used to produce the plastic sheeting that can not use stretching technique step by step, and can produce
Extra-thin thin film, the thinnest thickness that can produce about 1UM, transparency is good, prepares product at hot strength, extension at break
The aspect such as rate, percent thermal shrinkage all has and preferably shows, and in general, the method is easy to production application, and product quality is preferable, is
The technique that cost performance is higher.
Detailed description of the invention
Below according to embodiment, the present invention is described in further detail.
A kind of production method of pre-coating film basement membrane, step includes:
(1) pretreatment of raw material.
(2) raw material is sent into smelting furnace and carries out high-temperature fusion process, then fused raw material is extruded.
(3) fused raw material of extrusion is carried out slab, cool down after forming casting film sheet and through tank, the operation of slab
For: by the fused raw material of extrusion under pressure promotes, by elongated membrana oralis, under external force (air-flow) acts on, make melted moulding
Material is attached to rapidly the basement membrane making solid-state sheet material on sharp cooling roll surface.
(4) first casting film sheet is sent into vertical machine drawing and is carried out longitudinal stretching, is then re-fed into transverse stretching machine and carries out cross directional stretch and become thin film.
(5) thin film being carried out thickness measuring, if undesirable, repeats (4), if meeting the requirements, then carrying out trimming after traction,
After trimming, thin film is carried out sided corona treatment, then carries out eliminostatic process.
(6) thin film being carried out dedusting, dust removal operation is: use non-uniform electric field, forms corona discharge and produces plasma,
Under the effect of electric-force gradient, with the particulate pollutant generation inelastic collision in air adhering to, make charged ion,
In extra electric field power, collected by dust collecting electrode.
(7) rolling, cut, packaging warehouse-in after foreign bodies detection.
For the sided corona treatment of (5), owing to thin film majority is insulator, there are higher volume resistance and sheet resistance, institute
Running at high speed the thin film of lower drawing, charged because of friction, electrostatic all has ill effect to printing, compound etc., it is necessary to disappeared
Remove, simultaneously in order to surface is processed, improve its surface tension and reduce sheet resistance, use corona (electric spark) to process and
Static eraser.Electric spark is made by what high frequency occurred, can produce ozone with this colleague, with Plastic film surface effect, make
Generation oxy radical.
For (6) dedusting, it is plasma dedusting: not only removes various pollutant (TSP and various harmful gas), also adjusts
Ionic equilibrium in joint air.
Utilize a large amount of active particles in plasma that pollutant poisonous, harmful, difficult degradation are directly decomposed
Remove.This technology is mainly realized by two approach: one is under the high instantaneous energy effect of high energy electron, opens some
The chemical bond of harmful gas molecule so that it is Direct Resolution becomes simple substance atom or harmless molecule；Two be a large amount of high energy electrons, from
Son, excited state particle and oxygen-derived free radicals, hydroxyl free radical (free radical because having the strongest activity with unpaired electron) etc.
Under effect, oxidation Decomposition becomes harmless products.
The method utilizing electric discharge, produces anion, under ion wind drives, is diffused into the interior space.Appropriate concentration
Anion on the one hand have adjusted the ionic equilibrium in air, on the other hand, it can also remove the pollutant in air effectively.
The anion of high concentration collides with the toxic chemical substance in air and pathogenic bacteria suspended particulate substance and makes it electronegative, and these bands
The particulate matter of negative electricity will attract positively charged about particulate matter (antibacterial in usual air, virus, embrace son etc. be band just
Electricity).Till this accumulation process is continued until that the weight of particulate matter be enough to make it drop to ground.
Contrast according to upper table it can be seen that for the tape casting that uses relative to tradition of biaxial tension method and blowing,
The most all there is preferably effect.
Use biaxial tension method to can be used to produce the plastic sheeting that can not use stretching technique step by step, and can produce
Extra-thin thin film, the thinnest thickness that can produce about 1UM, transparency is good, prepares product at hot strength, extension at break
The aspect such as rate, percent thermal shrinkage all has and preferably shows, and in general, the method is easy to production application, and product quality is preferable, is
The technique that cost performance is higher.
Above-described embodiment only for technology design and the feature of the present invention are described, its object is to allow and is familiar with this art
Personage will appreciate that present invention and is carried out, and can not limit the scope of the invention with this.All according to the present invention
The equivalence that spirit is made changes or modifies, and all should contain within the scope of the present invention.
Claims (5)
1. the production method of a pre-coating film basement membrane, it is characterised in that step includes:
(1) pretreatment of raw material；
(2) raw material is sent into smelting furnace and carries out high-temperature fusion process, then fused raw material is extruded；
(3) fused raw material of extrusion is carried out slab, cool down after forming casting film sheet and through tank；
(4) first casting film sheet is sent into vertical machine drawing and is carried out longitudinal stretching, is then re-fed into transverse stretching machine and carries out cross directional stretch and become thin film；
(5) thin film being carried out thickness measuring, if undesirable, repeat (4), if meeting the requirements, then carrying out trimming after traction；
(6) thin film is carried out dedusting；
(7) rolling, cut, packaging warehouse-in after foreign bodies detection.
The production method of pre-coating film basement membrane the most according to claim 1, it is characterised in that (3) operation of slab is: will squeeze
The fused raw material gone out, under pressure promotes, by elongated membrana oralis, under external force, makes molten plastic be attached to rapidly sharp
The basement membrane of solid-state sheet material is made on cold roller surface.
The production method of pre-coating film basement membrane the most according to claim 2, it is characterised in that (3) External Force Acting selects air-flow
Effect.
The production method of pre-coating film basement membrane the most according to claim 1, it is characterised in that (5) after trimming, thin film is carried out
Sided corona treatment, then carries out eliminostatic process.
The production method of pre-coating film basement membrane the most according to claim 1, it is characterised in that (6) dust removal operation is: use not
Uniform electric field, forms corona discharge and produces plasma, under the effect of electric-force gradient, occurs with the particulate pollutant in air
Inelastic collision also adheres to, and makes charged ion, in extra electric field power, collected by dust collecting electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610556008.5A CN106182721A (en) | 2016-07-14 | 2016-07-14 | A kind of production method of pre-coating film basement membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610556008.5A CN106182721A (en) | 2016-07-14 | 2016-07-14 | A kind of production method of pre-coating film basement membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106182721A true CN106182721A (en) | 2016-12-07 |
Family
ID=57475242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610556008.5A Pending CN106182721A (en) | 2016-07-14 | 2016-07-14 | A kind of production method of pre-coating film basement membrane |
Country Status (1)
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2714291Y (en) * | 2004-06-25 | 2005-08-03 | 汕头市吉祥装璜工艺厂有限公司 | Thin film extrusion forming fast cooling device |
| US7288291B2 (en) * | 2002-03-14 | 2007-10-30 | Metso Paper, Inc. | Method for forming a film, by using electrostatic forces |
| CN101396892A (en) * | 2008-10-22 | 2009-04-01 | 北京康得新复合材料股份有限公司 | Metallization biaxial stretching polyester (BOPET) pre-coating film using chemical treatment |
| CN202965391U (en) * | 2012-09-13 | 2013-06-05 | 北京康得新复合材料股份有限公司 | No-primer lamination film and biaxially oriented polypropylene film of no-primer lamination film |
| CN103342970A (en) * | 2013-07-12 | 2013-10-09 | 浙江顺福印业有限公司 | High-efficiency environment-friendly pre-coated film processing technology |
| CN104309256A (en) * | 2014-09-24 | 2015-01-28 | 安徽省中彩印务有限公司 | New pre-coated film laminating technology |
| CN104589676A (en) * | 2014-11-28 | 2015-05-06 | 桐城市福润包装材料有限公司 | Production process of BOPP thin film |
-
2016
- 2016-07-14 CN CN201610556008.5A patent/CN106182721A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7288291B2 (en) * | 2002-03-14 | 2007-10-30 | Metso Paper, Inc. | Method for forming a film, by using electrostatic forces |
| CN2714291Y (en) * | 2004-06-25 | 2005-08-03 | 汕头市吉祥装璜工艺厂有限公司 | Thin film extrusion forming fast cooling device |
| CN101396892A (en) * | 2008-10-22 | 2009-04-01 | 北京康得新复合材料股份有限公司 | Metallization biaxial stretching polyester (BOPET) pre-coating film using chemical treatment |
| CN202965391U (en) * | 2012-09-13 | 2013-06-05 | 北京康得新复合材料股份有限公司 | No-primer lamination film and biaxially oriented polypropylene film of no-primer lamination film |
| CN103342970A (en) * | 2013-07-12 | 2013-10-09 | 浙江顺福印业有限公司 | High-efficiency environment-friendly pre-coated film processing technology |
| CN104309256A (en) * | 2014-09-24 | 2015-01-28 | 安徽省中彩印务有限公司 | New pre-coated film laminating technology |
| CN104589676A (en) * | 2014-11-28 | 2015-05-06 | 桐城市福润包装材料有限公司 | Production process of BOPP thin film |
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| C10 | Entry into substantive examination | ||
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Application publication date: 20161207 |
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| RJ01 | Rejection of invention patent application after publication |