CN102029704A - Method for preparing thick polyvinyl butyral (PVB) film by direct water cooling process - Google Patents

Method for preparing thick polyvinyl butyral (PVB) film by direct water cooling process Download PDF

Info

Publication number
CN102029704A
CN102029704A CN2010105259832A CN201010525983A CN102029704A CN 102029704 A CN102029704 A CN 102029704A CN 2010105259832 A CN2010105259832 A CN 2010105259832A CN 201010525983 A CN201010525983 A CN 201010525983A CN 102029704 A CN102029704 A CN 102029704A
Authority
CN
China
Prior art keywords
water
film
temperature
pvb
tank
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
Application number
CN2010105259832A
Other languages
Chinese (zh)
Other versions
CN102029704B (en
Inventor
陈庚
林卫平
汤君武
朱立疆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Deste new materials Limited by Share Ltd
Original Assignee
ZHEJIANG DECENT PLASTIC CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHEJIANG DECENT PLASTIC CO Ltd filed Critical ZHEJIANG DECENT PLASTIC CO Ltd
Priority to CN2010105259832A priority Critical patent/CN102029704B/en
Publication of CN102029704A publication Critical patent/CN102029704A/en
Application granted granted Critical
Publication of CN102029704B publication Critical patent/CN102029704B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07Flat, e.g. panels
    • B29C48/08Flat, e.g. panels flexible, e.g. films
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/92Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92504Controlled parameter
    • B29C2948/92609Dimensions
    • B29C2948/92647Thickness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00Indexing scheme relating to extrusion moulding
    • B29C2948/92Measuring, controlling or regulating
    • B29C2948/92819Location or phase of control
    • B29C2948/92857Extrusion unit
    • B29C2948/92904Die; Nozzle zone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25Component parts, details or accessories; Auxiliary operations
    • B29C48/88Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/919Thermal treatment of the stream of extruded material, e.g. cooling using a bath, e.g. extruding into an open bath to coagulate or cool the material

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

The invention belongs to the technical field of plastic molding and processing, in particular to a method for preparing a thick polyvinyl butyral (PVB) film by a direct water cooling process. The method comprises the following specific steps: (1) mixing materials; (2) extruding and plasticizing; (3) shaping by the direct water cooling process; (4) removing surface water; (5) performing online thickness measurement; and (6) drying, splitting and winding. In the invention, the PVB film with the thickness of more than 1mm is produced by combining the direct water cooling process with a drying treatment method, which can greatly reduce the time that a fused mixture of the PVB and a plasticizer is exposed to air, realize rapid cooling, high cooling efficiency and even thickness, and avoid the defects such as material aging and yellowing, reduced mechanical properties, shortened service life, high production cost and the like.

Description

A kind of water that utilizes directly cools off the method for preparing thick polyethylene butyral film
Technical field:
The invention belongs to the plastic molding processing technology field, be specifically related to a kind of water that utilizes and directly cool off the method for preparing thick polyethylene butyral film.
Background technology:
Water directly cooling be used in plastic granulating, sheet material, and the processing of profile shapes in very common, but it is the direct water-cooling process application is rarely found in sheet material or plastic sheeting, disclosed only have patent: CN101177040A that the direct process for cooling of water is used for blown film, is used to solve the problem that film flake thickness degree is inhomogeneous and cooling is not enough.
Polyvinyl butyral resin (PVB) has the extraordinary transparency, mechanical strength, cold resistance, UV resistant performance, and the bonding force good to glass is a kind of intermediate layer material that is most widely used in the laminated glass field.The polyvinyl butyral resin of molten state and the mixture of plasticizer are exposed to oxidation, chain rupture behavior easily take place in the air, and material variable color jaundice, mechanical properties decrease, service life are shortened.
At present, the production technology of PVB film be polyvinyl butyral resin and plasticizer through extruder mixing after, through the moulding of pattern head, again by embossing rod and the indirect cooling and shaping of chill roll, there is following weak point in this technology: the one, and the time that is exposed to air owing to film under the condition of high temperature is long, the easy aging yellowing of material; The 2nd, owing to be indirect cooling, cooling effectiveness is not high, is difficult to produce the film of thickness greater than 1mm; The 3rd, the equipment investment of embossing rod and chill roll is bigger, has increased production cost.
Adopt the mode of the direct process for cooling of water to cooperate the method for oven dry processing to produce the PVB film, can greatly reduce the polyvinyl butyral resin of molten state and the mixture of plasticizer and be exposed to the airborne time, realize cooling fast, avoid above-mentioned problem.
Summary of the invention:
The purpose of this invention is to provide a kind of production method that can produce one-tenth-value thickness 1/10 greater than the polyvinyl butyral film of 1mm.
The present invention is achieved in that
A kind of water that utilizes directly cools off the method for preparing thick polyethylene butyral film, and concrete steps are as follows:
(1) batch mixing: with residual hydroxyl content at the PVB of 17-23% resin-oatmeal and diester class plasticizer and auxiliary agent, on homogenizer, mix, the rotating speed of homogenizer is 400-800rpm, mixing time is 8-12min, be that benchmark calculates with PVB resin-oatmeal dry weight in the mixture, plasticizer-containing 25-40%, auxiliary agent be 10-5000PPM.
(2) extrusion plasticizing: pour the compound of step () gained into hopper, extrude in the extruder plasticizing that has exhaust section, remove impurity through fondant filter, by the Melt Pump voltage stabilizing, from the extrusion molding of T pattern head, wherein, screw speed 20-50rpm, measuring pump rotating speed 20-40rpm, 80-100 ℃ of feeding section temperature, 140-160 ℃ of fluxing zone temperature, 150-165 ℃ of homogenizing zone temperature, mold temperature is at 150-170 ℃, the low both sides of the medium temperature of mould are slightly high, and in order to guarantee the pressure of mould, the rotating speed that pressure sensor and main frame are set before Melt Pump is done closed-loop control, pressure is 2-5Mpa before the pump, and pressure is 10-18Mpa behind the pump.
(3) the direct cooling and shaping of water: the sheet material that comes out from T pattern tool directly enters the tank cooling under the effect of traction, cooling water adopts deionized water, and a 2-5m is set outside tank 3Water tank cooperate cooling tower that water temperature is controlled between 20-40 ℃, make water and the water in the water tank in the tank form a circulation by water pump, the temperature of water progressively raises on the water surface from the bottom in the tank, water surface temperature control is less than 60 ℃, the water temperature of the downward 10cm distance of the water surface is at 25-30 ℃, increase the internal circulating load of water when water surface temperature is too high, the water internal circulating load is 5-10m 3, the distance of deflector roll is at 20-50cm in the water surface and the water.
(4) remove surface water: film after leaving the water surface through scraping damping roller, remove lip-deep ponding, the damping roller of scraping below film is arranged with drip, with importing on the delivery port after the water access of dripping, avoid the fluctuation of the water surface, after the traction of first road, enter the first road baking oven, temperature of oven is set in 70-90 ℃ and carry out air blast, and film no longer includes water from the baking oven rear surface of coming out, and is convenient to online measurement.
(5) thickness measurement online: the film that comes out from baking oven carries out in length and breadth monitoring to thickness by the thickness measurement online system, and guide operating personnel to finely tune on hauling speed, mould bolt, mold temperature to produce the satisfactory product of the uniformity, the x-ray detection system of selecting for use penetration capacity to be adjusted at the scope of 0.5-3mm detects.
(6) oven dry, splitting winding: the film that has been anhydrated in the surface is done further oven dry through the second road baking oven and is handled with removal and be adsorbed on moisture in the film, bake out temperature is at 90-120 ℃, go out behind the second road baking oven and observing testing product outward appearance situation, cut that to batch promptly be finished product through one lamp box.
Above-mentioned diester class plasticizer is 3GO (triethylene glycol two tricaprylates), 4G7 (four contract three second, two heptanoates), DBS (dibutyl sebacate).
Above-mentioned auxiliary agent is: one of heat stabilizer, light stabilizer, bonding force conditioning agent or its combination.
The outstanding compared to existing technology advantage of the present invention is:
1, the present invention can produce the polyvinyl butyral film of thickness greater than 1mm;
2, the present invention adopts the method production PVB film that the mode of the direct process for cooling of water cooperates oven dry to handle, can greatly reduce the polyvinyl butyral resin of molten state and the mixture of plasticizer and be exposed to the airborne time, realize cooling fast, the cooling effectiveness height, thickness is even, can avoid defectives such as material aging flavescence, mechanical properties decrease, shortening in service life, production cost height.
Description of drawings:
Fig. 1 is a production line schematic diagram of the present invention;
Fig. 2 is a tank schematic diagram of the present invention.
The specific embodiment:
With specific embodiment the present invention is further described below, referring to Fig. 1-2:
A kind of water that utilizes directly cools off the method for preparing thick polyethylene butyral film, and concrete steps are as follows:
(1) batch mixing: with residual hydroxyl content at the PVB of 17-23% resin-oatmeal and diester class plasticizer and auxiliary agent, on homogenizer, mix, the rotating speed of homogenizer is 400-800rpm, mixing time is 8-12min, be that benchmark calculates with PVB resin-oatmeal dry weight in the mixture, plasticizer-containing 25-40%, auxiliary agent be 10-5000PPM.
(2) extrusion plasticizing: pour the compound of step () gained into hopper 1, extrude in extruder 2 plasticizings that have exhaust section, remove impurity through fondant filter 3, by Melt Pump 4 voltage stabilizings, from 5 extrusion moldings of T pattern head, wherein, screw speed 20-50rpm, measuring pump rotating speed 20-40rpm, 80-100 ℃ of feeding section temperature, 140-160 ℃ of fluxing zone temperature, 150-165 ℃ of homogenizing zone temperature, mold temperature is at 150-170 ℃, the low both sides of the medium temperature of mould are slightly high, and in order to guarantee the pressure of mould, the rotating speed that pressure sensor and main frame are set before Melt Pump is done closed-loop control, pressure is 2-5Mpa before the pump, and pressure is 10-18Mpa behind the pump.
(3) the direct cooling and shaping of water: the sheet material that comes out from T pattern tool directly enters tank 6 coolings under the effect of traction, cooling water adopts deionized water, and a 2-5m is set outside tank 6 3Water tank cooperate cooling tower that water temperature is controlled between 20-40 ℃, make water and the water in the water tank in the tank 6 form a circulation by water pump, the temperature of water progressively raises on the water surface from the bottom in the tank 6, water surface temperature control is less than 60 ℃, the water temperature of the downward 10cm distance of the water surface is at 25-30 ℃, increase the internal circulating load of water when water surface temperature is too high, the water internal circulating load is 5-10m 3, the distance of deflector roll 7 is at 20-50cm in the water surface and the water.
(4) remove surface water: film after leaving the water surface through scraping damping roller 8, remove lip-deep ponding, the damping roller 8 of scraping below film is arranged with drip, with importing on the delivery port 601 after the water access of dripping, avoid the fluctuation of the water surface, after first road traction 9, enter the first road baking oven 10, the temperature of baking oven 10 is set in 70-90 ℃ and carry out air blast, and film no longer includes water from baking oven 10 rear surface of coming out, and is convenient to online measurement.
(5) thickness measurement online: the film that comes out from baking oven 10 carries out in length and breadth monitoring to thickness by the thickness measurement online system, and guide operating personnel on hauling speed, mould bolt, mold temperature, to finely tune, to produce the satisfactory product of the uniformity, the x-ray detection system 11,12 of selecting for use penetration capacity to be adjusted at the scope of 0.5-3mm detects.
(6) oven dry, splitting winding: the film that has been anhydrated in the surface is done further oven dry through the second road baking oven 13 and is handled with removal and be adsorbed on moisture in the film, bake out temperature is at 90-120 ℃, go out the second road baking oven 13 back and observing testing product outward appearance situations, cut that to batch promptly be finished product through one lamp box 14.
Above-mentioned diester class plasticizer is 3GO (triethylene glycol two tricaprylates), 4G7 (four contract three second, two heptanoates), DBS (dibutyl sebacate).
Above-mentioned auxiliary agent is: one of heat stabilizer, light stabilizer, bonding force conditioning agent or its combination.
With preparation thickness 1.52mm, the PVB intermediate coat of width 1850mm is an example:
With 100 parts of PVB resins, 30 parts of plasticizer 3GO (triethylene glycol two tricaprylates) and 0.03 part of antioxidant 1010,0.02 part of ultra-violet absorber UV326,0.005 part bonding force conditioning agent, under the rotating speed of 600RPM, mixed 10 minutes, put into to plastify in the double screw extruder and extrude.
Concrete process conditions are:
The temperature in twin-screw eight districts is respectively: 80 ℃, and 120 ℃, 140 ℃, 145 ℃, 145 ℃, 150 ℃, 155 ℃, 155 ℃, 150 ℃ of melt filtration actuator temperatures, 155 ℃ of Melt Pump temperature, T pattern tool 13 district's temperature are respectively: 165 ℃, 160 ℃, 158 ℃, 156 ℃, 156 ℃, 155 ℃, 155 ℃, 155 ℃, 156 ℃, 156 ℃, 158 ℃, 160 ℃, 165 ℃.
The mould mouth is a dried up height 2cm, 50 ℃ of flume surface coolant-temperature gages, deflector roll water clearance 35cm under water, draught line speed 1.2m/min.80 ℃ of the first road oven temperatures, 110 ℃ of the second road oven temperatures.
The PVB the key technical indexes is after testing:
Yellowness index 8.9, thickness 1.52 ± 3mm, moisture 0.42% is to the bonding force 52N/cm of glass, light transmittance 87.6%, mist degree 0.5%.
The foregoing description is one of preferred embodiment of the present invention only, is not to limit practical range of the present invention with this, so: all equivalences of doing according to shape of the present invention, structure, principle change, and all should be covered by within protection scope of the present invention.

Claims (3)

1. one kind is utilized water directly to cool off the method for preparing thick polyethylene butyral film, and concrete steps are as follows:
(1) batch mixing: with residual hydroxyl content at the PVB of 17-23% resin-oatmeal and diester class plasticizer and auxiliary agent, on homogenizer, mix, the rotating speed of homogenizer is 400-800rpm, mixing time is 8-12min, be that benchmark calculates with PVB resin-oatmeal dry weight in the mixture, plasticizer-containing 25-40%, auxiliary agent are 10-5000PPM.
(2) extrusion plasticizing: pour the compound of step () gained into hopper, extrude in the extruder plasticizing that has exhaust section, remove impurity through fondant filter, by the Melt Pump voltage stabilizing, from the extrusion molding of T pattern head, wherein, screw speed 20-50rpm, measuring pump rotating speed 20-40rpm, 80-100 ℃ of feeding section temperature, 140-160 ℃ of fluxing zone temperature, 150-165 ℃ of homogenizing zone temperature, mold temperature is at 150-170 ℃, the low both sides of the medium temperature of mould are slightly high, the rotating speed that pressure sensor and main frame are set before Melt Pump is done closed-loop control, and pressure is 2-5Mpa before the pump, and pressure is 10-18Mpa behind the pump.
(3) the direct cooling and shaping of water: the sheet material that comes out from T pattern tool directly enters the tank cooling under the effect of traction, cooling water adopts deionized water, and a 2-5m is set outside tank 3Water tank cooperate cooling tower that water temperature is controlled between 20-40 ℃, make water and the water in the water tank in the tank form a circulation by water pump, the temperature of water progressively raises on the water surface from the bottom in the tank, water surface temperature control is less than 60 ℃, the water temperature of the downward 10cm distance of the water surface is at 25-30 ℃, increase the internal circulating load of water when water surface temperature is too high, the water internal circulating load is 5-10m 3, the distance of deflector roll is at 20-50cm in the water surface and the water.
(4) remove surface water: film after leaving the water surface through scraping damping roller, remove lip-deep ponding, the damping roller of scraping below film is arranged with drip, to import on the delivery port after the water access of dripping, after the traction of first road, enter the first road baking oven, temperature of oven is set in 70-90 ℃ and carry out air blast.
(5) thickness measurement online: the film that comes out from baking oven is undertaken in length and breadth to the monitoring of thickness by the thickness measurement online system, and to produce the satisfactory product of the uniformity, the x-ray detection system of selecting for use penetration capacity to be adjusted at the scope of 0.5-3mm detects.
(6) oven dry, splitting winding: the film that has been anhydrated in the surface is done further oven dry through the second road baking oven and is handled with removal and be adsorbed on moisture in the film, bake out temperature is at 90-120 ℃, go out behind the second road baking oven and observing testing product outward appearance situation, cut that to batch promptly be finished product through one lamp box.
2. a kind of water that utilizes according to claim 1 directly cools off the method for preparing thick polyethylene butyral film, it is characterized in that: described diester class plasticizer is 3GO, 4G7, DBS.
3. a kind of water that utilizes according to claim 1 directly cools off the method for preparing thick polyethylene butyral film, and it is characterized in that: described auxiliary agent is: one of heat stabilizer, light stabilizer, bonding force conditioning agent or its combination.
CN2010105259832A 2010-10-30 2010-10-30 Method for preparing thick polyvinyl butyral (PVB) film by direct water cooling process Active CN102029704B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105259832A CN102029704B (en) 2010-10-30 2010-10-30 Method for preparing thick polyvinyl butyral (PVB) film by direct water cooling process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105259832A CN102029704B (en) 2010-10-30 2010-10-30 Method for preparing thick polyvinyl butyral (PVB) film by direct water cooling process

Publications (2)

Publication Number Publication Date
CN102029704A true CN102029704A (en) 2011-04-27
CN102029704B CN102029704B (en) 2012-11-28

Family

ID=43883415

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010105259832A Active CN102029704B (en) 2010-10-30 2010-10-30 Method for preparing thick polyvinyl butyral (PVB) film by direct water cooling process

Country Status (1)

Country Link
CN (1) CN102029704B (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102504456A (en) * 2011-10-31 2012-06-20 陈庆江 Production process and production system of durable PVB (polyvinyl butyral) intermediate films
CN102514173A (en) * 2011-12-07 2012-06-27 浙江大学 Dynamic microchannel plastic extrusion-molding device and method
CN103029927A (en) * 2012-12-10 2013-04-10 上海宝钢磁业有限公司 Novel powder polyvinyl alcohol grain feeder and feeding process
CN103171121A (en) * 2011-12-26 2013-06-26 上海晶棠安全玻璃技术应用研究中心 Method for manufacturing PVB (polyvinyl butyral) laminated film for solar energy photovoltaic power generation
CN103660249A (en) * 2013-11-28 2014-03-26 南宁市日建塑料包装有限责任公司 Sheet thickness adjusting device of plastic sheet machine
CN103728677A (en) * 2013-12-26 2014-04-16 石平辉 Biodegradable and environment-friendly plastic convex lens array film product and manufacturing method thereof
CN104441566A (en) * 2014-11-11 2015-03-25 界首市鑫豪塑胶有限公司 PVC (polyvinyl chloride) plastic flooring cooling and setting method
CN104844739A (en) * 2015-05-15 2015-08-19 亿帆鑫富药业股份有限公司 Crosslinkable PVB (polyvinyl butyral), production method of crosslinkable PVB, and method utilizing crosslinkable PVB to produce crosslinkable PVB film
CN108099083A (en) * 2017-12-25 2018-06-01 福州福启橡塑有限公司 A kind of sheet rubber extrusion molding production line
CN109176997A (en) * 2018-07-27 2019-01-11 芜湖凯兴汽车电子有限公司 A kind of plastic products processing rapid cooling shaping equipment
CN109702979A (en) * 2018-12-17 2019-05-03 嘉兴彩虹光学膜片科技有限公司 A kind of plastic film extrusion cooling device
CN111347647A (en) * 2020-03-27 2020-06-30 江苏奥天利新材料有限公司 Preparation method of temperature-control color-changing PVB intermediate film

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1039376A (en) * 1989-05-25 1990-02-07 桂林市建设印刷厂 Extruding compounding machine, to be used for dry method compound
JP2871501B2 (en) * 1994-04-08 1999-03-17 東レ株式会社 Extrusion molding method of thermoplastic resin film
CN1251066A (en) * 1997-03-19 2000-04-19 盖伊·迪克吕 Method for producing honeycomb core in thermofusible material and device for implementing same
WO2006054520A1 (en) * 2004-11-19 2006-05-26 Asahi Kasei Chemicals Corporation Resin extruded plate and method for producing the same
CN101326044A (en) * 2005-12-12 2008-12-17 柯尼卡美能达精密光学株式会社 Protective film for polarizing plate, method for production of film, polarizing plate and liquid crystal display element

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1039376A (en) * 1989-05-25 1990-02-07 桂林市建设印刷厂 Extruding compounding machine, to be used for dry method compound
JP2871501B2 (en) * 1994-04-08 1999-03-17 東レ株式会社 Extrusion molding method of thermoplastic resin film
CN1251066A (en) * 1997-03-19 2000-04-19 盖伊·迪克吕 Method for producing honeycomb core in thermofusible material and device for implementing same
WO2006054520A1 (en) * 2004-11-19 2006-05-26 Asahi Kasei Chemicals Corporation Resin extruded plate and method for producing the same
CN101326044A (en) * 2005-12-12 2008-12-17 柯尼卡美能达精密光学株式会社 Protective film for polarizing plate, method for production of film, polarizing plate and liquid crystal display element

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102504456A (en) * 2011-10-31 2012-06-20 陈庆江 Production process and production system of durable PVB (polyvinyl butyral) intermediate films
CN102514173B (en) * 2011-12-07 2014-05-21 浙江大学 Dynamic microchannel plastic extrusion-molding device and method
CN102514173A (en) * 2011-12-07 2012-06-27 浙江大学 Dynamic microchannel plastic extrusion-molding device and method
US9586356B2 (en) 2011-12-07 2017-03-07 Zhejiang University Device and method for dynamic extrusion molding of plastic article having variable micro-channel
CN103171121A (en) * 2011-12-26 2013-06-26 上海晶棠安全玻璃技术应用研究中心 Method for manufacturing PVB (polyvinyl butyral) laminated film for solar energy photovoltaic power generation
CN103171121B (en) * 2011-12-26 2016-01-20 上海晶棠安全玻璃技术应用研究中心 A kind of solar energy power generating PVB doubling film manufacturing method
CN103029927B (en) * 2012-12-10 2015-07-01 上海宝钢磁业有限公司 Novel powder polyvinyl alcohol grain feeder and feeding process
CN103029927A (en) * 2012-12-10 2013-04-10 上海宝钢磁业有限公司 Novel powder polyvinyl alcohol grain feeder and feeding process
CN103660249A (en) * 2013-11-28 2014-03-26 南宁市日建塑料包装有限责任公司 Sheet thickness adjusting device of plastic sheet machine
CN103728677A (en) * 2013-12-26 2014-04-16 石平辉 Biodegradable and environment-friendly plastic convex lens array film product and manufacturing method thereof
CN103728677B (en) * 2013-12-26 2016-02-03 石平辉 Plastics convex lens array film goods of biodegradable environmental protection and preparation method thereof
CN104441566A (en) * 2014-11-11 2015-03-25 界首市鑫豪塑胶有限公司 PVC (polyvinyl chloride) plastic flooring cooling and setting method
CN104844739A (en) * 2015-05-15 2015-08-19 亿帆鑫富药业股份有限公司 Crosslinkable PVB (polyvinyl butyral), production method of crosslinkable PVB, and method utilizing crosslinkable PVB to produce crosslinkable PVB film
CN108099083A (en) * 2017-12-25 2018-06-01 福州福启橡塑有限公司 A kind of sheet rubber extrusion molding production line
CN109176997A (en) * 2018-07-27 2019-01-11 芜湖凯兴汽车电子有限公司 A kind of plastic products processing rapid cooling shaping equipment
CN109702979A (en) * 2018-12-17 2019-05-03 嘉兴彩虹光学膜片科技有限公司 A kind of plastic film extrusion cooling device
CN111347647A (en) * 2020-03-27 2020-06-30 江苏奥天利新材料有限公司 Preparation method of temperature-control color-changing PVB intermediate film

Also Published As

Publication number Publication date
CN102029704B (en) 2012-11-28

Similar Documents

Publication Publication Date Title
CN102029704B (en) Method for preparing thick polyvinyl butyral (PVB) film by direct water cooling process
US9431560B2 (en) Polyvinyl acetal resin film and multilayer structure articles using the same
KR19980703066A (en) Method for producing polyvinyl butyral sheet
CN104059554B (en) Temperature sense discoloration polyvinyl butyral resin intermediate coat and preparation method thereof
CN105622969A (en) Technology for producing polyvinyl butyral intermediate film
CN104589676A (en) Production process of BOPP thin film
CN107880406B (en) Modified ethylene propylene diene monomer, water stop belt, preparation method, application and manufacturing plant thereof
CN107118520A (en) A kind of smooth PET sheet of high transparency and its manufacture method
CN102582190A (en) Optical biaxial oriented polyester base film and manufacturing method thereof
CN111808387A (en) Polyvinyl chloride mulching film and preparation method thereof
CN105058939A (en) Environment-friendly polyester film and preparation method thereof
CN102248728A (en) Uvioresistant BOPP (Biaxially Oriented Polypropylene) film and preparation process thereof
CN108083657B (en) Hollow glass and production process thereof
EP4240791A1 (en) Upgrading recycled polyvinyl butyral
CN109278389A (en) One kind is exempted to be coated with Biaxially oriented polypropylene cold seal basement membrane and preparation method thereof
CN103707517B (en) A kind of processing technology being exclusively used in high bright biaxially oriented polyester film
CN111572139B (en) Colorful high-brightness high-transmittance antibacterial polyester film for packaging printing and preparation method thereof
CN202805590U (en) PVB (polyvinyl butyral) glass interlayer diaphragm production line
CN102794895A (en) PVB (polyvinyl butyral) glass sandwich layer membrane sheet production line and operating method thereof
CN105111629A (en) High-resistance PVC alloy profile and preparation method thereof
CN103042646A (en) Process for fabricating thermal conductive silica gel sheets
CN206030356U (en) Film production lines casting machine equipment
CN104842608B (en) A kind of window film anti-ultraviolet polyester film and preparation method thereof
WO2014090895A1 (en) Molded bodies made of polyvinyl (iso)acetals
CN108676300B (en) Preparation method of low-haze polyvinyl butyral film

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: 317200 Chicheng City, Zhejiang province Tiantai County Street workers East Road, No. 801

Patentee after: Zhejiang Deste new materials Limited by Share Ltd

Address before: 317200 Chicheng City, Zhejiang province Tiantai County Street workers East Road, No. 801

Patentee before: Zhejiang Decent Plastic Co., Ltd.

CP01 Change in the name or title of a patent holder
PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: Method for preparing thick polyvinyl butyral (PVB) film by direct water cooling process

Effective date of registration: 20170623

Granted publication date: 20121128

Pledgee: Zheshang Bank, Limited by Share Ltd, Taizhou branch

Pledgor: Zhejiang Deste new materials Limited by Share Ltd

Registration number: 2017330000057

PC01 Cancellation of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20200831

Granted publication date: 20121128

Pledgee: Zheshang Bank Limited by Share Ltd. Taizhou branch

Pledgor: ZHEJIANG DECENT NEW MATERIAL Co.,Ltd.

Registration number: 2017330000057

PE01 Entry into force of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of invention: A method of preparing thick polyvinyl butyral film by direct cooling with water

Effective date of registration: 20200909

Granted publication date: 20121128

Pledgee: Zheshang Bank Limited by Share Ltd. Taizhou branch

Pledgor: ZHEJIANG DECENT NEW MATERIAL Co.,Ltd.

Registration number: Y2020330000682