CN105315622A - Method of producing polyester thin film used for ultrathin-type glue tape - Google Patents
Method of producing polyester thin film used for ultrathin-type glue tape Download PDFInfo
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- CN105315622A CN105315622A CN201410270419.9A CN201410270419A CN105315622A CN 105315622 A CN105315622 A CN 105315622A CN 201410270419 A CN201410270419 A CN 201410270419A CN 105315622 A CN105315622 A CN 105315622A
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- adhesive tape
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Abstract
The invention relates to a method of producing a polyester thin film used for ultrathin-type glue tapes. The method includes the steps of 1) fully mixing raw materials comprising a polyester master batch containing nano-scale silicon dioxide and super-bright polyester chips; and 2) performing the following operations: pre-crystallization, drying, melting extrusion, sheet casting, bidirectional stretching, thermal-moulding, drawing, thickness test, rolling-up and cutting to prepare the polyester thin film. Compared with the prior art, the method is carried out with the specially-prepared raw materials, wherein the granular size of the addition agent is in nano scale so that the addition agent is uniformly dispersed. The polyester thin film has excellent heat resistance so that when the polyester thin film is coated by glue, the polyester thin film is free of deformation after treatment in a drying oven and still has excellent flatness, so that the polyester thin film is suitable for double-surface glue coating. Low static electricity residue reduces adsorption of dust during the glue coating process and ensures uniformity of glue coating, so that a glue tape, of which the static electricity is less than 5 kV and is not more than 3.0% in longitudinal thermal compression rate and not more than 1.0% in transversal thermal compression rate at 150 DEG C within 30 min, can be prepared.
Description
Technical field
The present invention relates to a kind of method making film, especially relate to a kind of method making ultrathin adhesive tape polyester film.
Background technology
Normal tape is with polyester film thickness usually at about 20-25um, and purposes has certain limitation.Need the double sticky tape of ultrathin electric insulation in photovoltaic industry, to adapt to the stickup requirement of narrow space, be also the growth requirement of ultrathin electronic product simultaneously.
Application number be 201210068580.9 Chinese patent disclose a kind of production technique of super BiOriented Polypropylene Films, this technique adopts the multi-layer co-extruded technology of sandwich layer forcing machine and two top layer forcing machines, sandwich layer adopts the preparation of raw material of following weight percent to form: PP92-98%, transparent base 2-8%; Described top layer adopts the preparation of raw material of following weight percent to form: PP92-98%; Opening agent masterbatch 1-7%; Release agent 0.5-1.5%.The mist degree of the ultra-thin BOPP prepared is between 0.4-0.5, good in optical property, high transmission rate, low haze, very good as high-grade stationery adhesive tape effect, also can be used as other packagings and color printing use, its visual effect substantially exceeds common BOPP film, improve product specification, but the resistance toheat of this kind of film not good and in gluing process easy attract dust, cause glue coating uneven.The macromolecular material adopted in this patent is polypropylene, the mechanical property of polypropylene material has a certain distance compared with polyethylene terephthalate, in this patent, ultrathin adhesive tape polyester film has good tensile strength, its longitudinal tensile strength can reach more than 220MPa, be not easy fracture in use procedure, polyester has higher specific inductivity, and general specific inductivity is 3.0 ~ 3.2, good electrical insulation properties, is suitable in electric product very much.
Summary of the invention
Object of the present invention be exactly provide that a kind of resistance toheat is good to overcome defect that above-mentioned prior art exists, the method for the ultrathin adhesive tape polyester film of the remaining low making of electrostatic.
Object of the present invention can be achieved through the following technical solutions:
A kind of method making ultrathin adhesive tape polyester film, with the polyester masterbatch containing nanometer grade silica and large bright PET chips for raw material, after abundant mixing, through pre-crystallized, dry, melt extrude, slab, two-way stretch, heat setting type, traction, thickness measuring, rolling, cutting process, prepare ultrathin adhesive tape polyester film.
Described is 1: 1 containing the polyester masterbatch of nanometer grade silica and the weight ratio of large bright PET chips.
Raw material also comprises reclaimed materials, and the weight ratio of the polyester masterbatch containing nanometer grade silica, large bright PET chips, reclaimed materials is 4: 4: 2.
Gas phase spray technique is adopted to process nano silicon, and carry out ultrasonic wave dispersion, prepare the polyester masterbatch containing nanometer grade silica, wherein the content of silicon-dioxide is 3000 ~ 4000ppm, and the limiting viscosity of polyester masterbatch is 0.64 ~ 0.65dl/g;
Described large bright PET chips is that limiting viscosity is 0.64 ~ 0.66dl/g polyethylene terephthalate not containing additive.
Carry out pre-crystallized and dry after the described polyester masterbatch containing nanometer grade silica, large bright PET chips and reclaimed materials fully mix, pre-crystallization temperature 160 DEG C, drying temperature 165 DEG C, 4 hours time of drying.
Adopt forcing machine to melt extrude, the temperature melt extruded is 264-270 DEG C.
Adopt cold drum to carry out slab, during slab, the temperature of cold drum is 25 DEG C.
Three-stage tension is adopted during two-way stretch, stretch section 3 is 2.55 times, stretch section 2 is 1.11 times, stretch section 1 is 1.60 times, longitudinal drawing temperature is 100 ~ 110 DEG C, and adopt infrared lamp to carry out irradiation to film during stretching, infrared lamp power is 240 ~ 260V, cross directional stretch multiplying power is 4.0 times, and draft temperature is 105 ~ 120 DEG C.
The temperature of heat setting type is 220-228 DEG C.
The polyester film thickness prepared through thickness measuring technology controlling and process is 4.5 μm.
Compared with prior art, the invention has the advantages that the raw material using special preparation, the particle diameter of its additive is Nano grade, be uniformly dispersed, the resistance toheat that ultra-thin adhesive tape polyester film is good can make it indeformable through baking oven film after glue coating, still there is good planeness, be suitable for double spread.Lower electrostatic remnants decrease the absorption of dust in gluing process, ensure that the homogeneity that glue applies, thus can prepare the remaining < 5kv of electrostatic, at 150 DEG C, in 30min, longitudinal percent thermal shrinkage≤3.0%, horizontal percent thermal shrinkage≤1.0%.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
Raw material uses: have light: masterbatch=50%:50%
Film thickness: 4.5um
Production rate: 280m/min
Technology point:
Extruder temperature 264-270 DEG C
Toothed gear pump rotating speed 9.7rpm
Cold bulging temperature 25 DEG C
MD stretching ratio: three-stage tension 2.55*1.11*1.60 (three-stage tension multiplying power * second segment stretching ratio * first paragraph stretching ratio) infrared lamp power: 240 ~ 260v, MD draft temperature is 100 ~ 110 DEG C.
TD stretching ratio 4.0 times, draft temperature 105 ~ 120 DEG C.
Heat setting temperature 225 DEG C
Raw material melt extrudes through forcing machine, through slab, two-way stretch, heat setting type, rolling, cuts.
Embodiment 2
Raw material uses: have light: masterbatch: reclaimed materials=40%: 40%: 20%
Film thickness: 4.5um
Production rate: 280m/min
Technology point:
Extruder temperature 264-270 DEG C
Toothed gear pump rotating speed 9.7rpm
Cold bulging temperature 25 DEG C
MD stretching ratio: three-stage tension 2.55*1.11*1.60 (three-stage tension multiplying power * second segment stretching ratio * first paragraph stretching ratio) infrared lamp power: 240 ~ 260v, MD draft temperature is 100 ~ 110 DEG C.
TD stretching ratio 4.0 times, draft temperature 105 ~ 120 DEG C.
Heat setting temperature 225 DEG C
Raw material melt extrudes through forcing machine, through slab, two-way stretch, heat setting type, rolling, cuts.
The ultrathin adhesive tape polyester film Main physical performance prepared is as follows:
Thickness limit deviation < 4%
Tensile strength longitudinal direction >=200MPa, transverse direction >=200MPa,
Elongation at break longitudinal direction >=60%, laterally >=60%,
Percent thermal shrinkage (150 DEG C, 30min) longitudinal direction≤3.0%, laterally≤1.0%,
Frictional coefficient≤0.6,
The remaining < 5kv of electrostatic.
Embodiment 4
A kind of method making ultrathin adhesive tape polyester film, with the polyester masterbatch containing nanometer grade silica and large bright PET chips for raw material, reclaimed materials can also be added, the weight ratio of the polyester masterbatch containing nanometer grade silica, large bright PET chips, reclaimed materials is 4: 4: 2, wherein, gas phase spray technique is adopted to process nano silicon, and carry out ultrasonic wave dispersion, prepare the polyester masterbatch containing nanometer grade silica, wherein the content of silicon-dioxide is 3000ppm, and the limiting viscosity of polyester masterbatch is 0.64dl/g; Large bright PET chips is that limiting viscosity is 0.64dl/g polyethylene terephthalate not containing additive.
After above-mentioned raw materials fully mixes, through pre-crystallized, dry, melt extrude, slab, two-way stretch, heat setting type, traction, thickness measuring, rolling, cutting process, prepare ultrathin adhesive tape polyester film.
Wherein, carry out pre-crystallized and dry after the polyester masterbatch containing nanometer grade silica, large bright PET chips and reclaimed materials fully mix, pre-crystallization temperature 160 DEG C, drying temperature 165 DEG C, 4 hours time of drying.Adopt forcing machine to melt extrude, the temperature melt extruded is 264 DEG C.Adopt cold drum to carry out slab, during slab, the temperature of cold drum is 25 DEG C.Adopt three-stage tension during two-way stretch, stretch section 3 is 2.55 times, and stretch section 2 is 1.11 times, stretch section 1 is 1.60 times, and longitudinal drawing temperature is 100 DEG C, adopts infrared lamp to carry out irradiation to film during stretching, infrared lamp power is 240V, and cross directional stretch multiplying power is 4.0 times, and draft temperature is 105 DEG C.The temperature of heat setting type is 220 DEG C.And be 4.5 μm through the polyester film thickness that thickness measuring technology controlling and process prepares.
Embodiment 5
A kind of method making ultrathin adhesive tape polyester film, be 1: 1 for raw material by weight with the polyester masterbatch containing nanometer grade silica and large bright PET chips, gas phase spray technique is adopted to process nano silicon, and carry out ultrasonic wave dispersion, prepare the polyester masterbatch containing nanometer grade silica, wherein the content of silicon-dioxide is 4000ppm, and the limiting viscosity of polyester masterbatch is 0.65dl/g; Large bright PET chips is that limiting viscosity is 0.66dl/g polyethylene terephthalate not containing additive.
After above-mentioned raw materials fully mixes, through pre-crystallized, dry, melt extrude, slab, two-way stretch, heat setting type, traction, thickness measuring, rolling, cutting process, prepare ultrathin adhesive tape polyester film.
Wherein, carry out pre-crystallized and dry after the polyester masterbatch containing nanometer grade silica, large bright PET chips and reclaimed materials fully mix, pre-crystallization temperature 160 DEG C, drying temperature 165 DEG C, 4 hours time of drying.Adopt forcing machine to melt extrude, the temperature melt extruded is 270 DEG C.Adopt cold drum to carry out slab, during slab, the temperature of cold drum is 25 DEG C.Adopt three-stage tension during two-way stretch, stretch section 3 is 2.55 times, and stretch section 2 is 1.11 times, stretch section 1 is 1.60 times, and longitudinal drawing temperature is 110 DEG C, adopts infrared lamp to carry out irradiation to film during stretching, infrared lamp power is 260V, and cross directional stretch multiplying power is 4.0 times, and draft temperature is 120 DEG C.The temperature of heat setting type is 280 DEG C.And be 4.5 μm through the polyester film thickness that thickness measuring technology controlling and process prepares.
Claims (10)
1. one kind makes the method for ultrathin adhesive tape polyester film, it is characterized in that, the method with the polyester masterbatch containing nanometer grade silica and large bright PET chips for raw material, after abundant mixing, through pre-crystallized, dry, melt extrude, slab, two-way stretch, heat setting type, traction, thickness measuring, rolling, cutting process, prepare ultrathin adhesive tape polyester film.
2. a kind of method making ultrathin adhesive tape polyester film according to claim 1, is characterized in that, described is 1: 1 containing the polyester masterbatch of nanometer grade silica and the weight ratio of large bright PET chips.
3. a kind of method making ultrathin adhesive tape polyester film according to claim 1, it is characterized in that, raw material also comprises reclaimed materials, and the weight ratio of the polyester masterbatch containing nanometer grade silica, large bright PET chips, reclaimed materials is 4: 4: 2.
4. a kind of method making ultrathin adhesive tape polyester film according to any one of claim 1-3, it is characterized in that, gas phase spray technique is adopted to process nano silicon, and carry out ultrasonic wave dispersion, prepare the polyester masterbatch containing nanometer grade silica, wherein the content of silicon-dioxide is 3000 ~ 4000ppm, and the limiting viscosity of polyester masterbatch is 0.64 ~ 0.65dl/g;
Described large bright PET chips is that limiting viscosity is 0.64 ~ 0.66dl/g polyethylene terephthalate not containing additive.
5. a kind of method making ultrathin adhesive tape polyester film according to claim 3, it is characterized in that, carry out pre-crystallized and dry after the described polyester masterbatch containing nanometer grade silica, large bright PET chips and reclaimed materials fully mix, pre-crystallization temperature 160 DEG C, drying temperature 165 DEG C, 4 hours time of drying.
6. a kind of method making ultrathin adhesive tape polyester film according to claim 1, is characterized in that, adopt forcing machine to melt extrude, the temperature melt extruded is 264-270 DEG C.
7. a kind of method making ultrathin adhesive tape polyester film according to claim 1, is characterized in that, adopt cold drum to carry out slab, during slab, the temperature of cold drum is 25 DEG C.
8. a kind of method making ultrathin adhesive tape polyester film according to claim 1, it is characterized in that, adopt three-stage tension during two-way stretch, stretch section 3 is 2.55 times, and stretch section 2 is 1.11 times, stretch section 1 is 1.60 times, longitudinal drawing temperature is 100 ~ 110 DEG C, and adopt infrared lamp to carry out irradiation to film during stretching, infrared lamp power is 240 ~ 260V, cross directional stretch multiplying power is 4.0 times, and draft temperature is 105 ~ 120 DEG C.
9. a kind of method making ultrathin adhesive tape polyester film according to claim 1, is characterized in that, the temperature of heat setting type is 220-228 DEG C.
10. a kind of method making ultrathin adhesive tape polyester film according to claim 1, is characterized in that, the polyester film thickness prepared through thickness measuring technology controlling and process is 4.5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410270419.9A CN105315622A (en) | 2014-06-17 | 2014-06-17 | Method of producing polyester thin film used for ultrathin-type glue tape |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410270419.9A CN105315622A (en) | 2014-06-17 | 2014-06-17 | Method of producing polyester thin film used for ultrathin-type glue tape |
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| CN105315622A true CN105315622A (en) | 2016-02-10 |
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| CN201410270419.9A Pending CN105315622A (en) | 2014-06-17 | 2014-06-17 | Method of producing polyester thin film used for ultrathin-type glue tape |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729966A (en) * | 2016-03-01 | 2016-07-06 | 山东丰华塑胶科技有限公司 | High-elongation biaxially oriented polyester film and preparation method thereof |
| CN106221143A (en) * | 2016-08-11 | 2016-12-14 | 苏州柯创电子材料有限公司 | Flame retardant polyester adhesive band base |
| CN113480757A (en) * | 2021-06-15 | 2021-10-08 | 浙江富晟科技股份有限公司 | High-strength composite film without coating bottom and glue and production equipment thereof |
| CN114806097A (en) * | 2022-05-09 | 2022-07-29 | 绍兴翔宇绿色包装有限公司 | Biaxially oriented polyester film for positioning ironing and preparation process thereof |
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| CN1897178A (en) * | 2005-07-15 | 2007-01-17 | 上海紫东薄膜材料股份有限公司 | Two-way stretched polyester thin-film of capacitor and its production |
| CN101195685A (en) * | 2007-04-30 | 2008-06-11 | 天津市大港区兴起化工有限公司 | Full-dull colorful insulation polyester film and production technology thereof |
| CN102463725A (en) * | 2010-11-16 | 2012-05-23 | 上海邦凯塑胶科技有限公司 | Polyester film and manufacture method thereof |
| CN102558775A (en) * | 2010-12-23 | 2012-07-11 | 上海紫东薄膜材料股份有限公司 | Ultra-thin type polyester film for capacitor and production method thereof |
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2014
- 2014-06-17 CN CN201410270419.9A patent/CN105315622A/en active Pending
Patent Citations (4)
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| CN1897178A (en) * | 2005-07-15 | 2007-01-17 | 上海紫东薄膜材料股份有限公司 | Two-way stretched polyester thin-film of capacitor and its production |
| CN101195685A (en) * | 2007-04-30 | 2008-06-11 | 天津市大港区兴起化工有限公司 | Full-dull colorful insulation polyester film and production technology thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105729966A (en) * | 2016-03-01 | 2016-07-06 | 山东丰华塑胶科技有限公司 | High-elongation biaxially oriented polyester film and preparation method thereof |
| CN106221143A (en) * | 2016-08-11 | 2016-12-14 | 苏州柯创电子材料有限公司 | Flame retardant polyester adhesive band base |
| CN106221143B (en) * | 2016-08-11 | 2018-07-10 | 苏州柯创电子材料有限公司 | Flame retardant polyester adhesive band base |
| CN113480757A (en) * | 2021-06-15 | 2021-10-08 | 浙江富晟科技股份有限公司 | High-strength composite film without coating bottom and glue and production equipment thereof |
| CN114806097A (en) * | 2022-05-09 | 2022-07-29 | 绍兴翔宇绿色包装有限公司 | Biaxially oriented polyester film for positioning ironing and preparation process thereof |
| CN114806097B (en) * | 2022-05-09 | 2022-12-16 | 绍兴翔宇绿色包装有限公司 | Biaxially oriented polyester film for positioning ironing and preparation process thereof |
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