CN114193888A - Production method of BOPET film capable of improving impact strength - Google Patents

Production method of BOPET film capable of improving impact strength Download PDF

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Publication number
CN114193888A
CN114193888A CN202111471184.6A CN202111471184A CN114193888A CN 114193888 A CN114193888 A CN 114193888A CN 202111471184 A CN202111471184 A CN 202111471184A CN 114193888 A CN114193888 A CN 114193888A
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Prior art keywords
film
surface layer
pet
component
impact strength
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CN202111471184.6A
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Chinese (zh)
Inventor
邵峥
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Ningbo Yingrui Polymerization Technology Co ltd
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Ningbo Yingrui Polymerization Technology Co ltd
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Priority to CN202111471184.6A priority Critical patent/CN114193888A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • B29D7/01—Films or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/302—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/21—Anti-static
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/308—Heat stability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/726—Permeability to liquids, absorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/728—Hydrophilic

Abstract

The invention discloses a method for producing a BOPET film capable of improving impact strength, wherein the BOPET film consists of an outer surface layer, a middle core layer and an inner surface layer; the outer surface layer consists of PET, ECDP, PEG, silicon dioxide and montmorillonite; the middle core layer consists of PET, ABS, PS-g-GMA, PEN and DBS polyolefin nucleating agents; the inner surface layer consists of PET, HDPE, PP, SEBS-g-MAH, EPR and maleic anhydride modified polyethylene. The BOPET film designed by the method greatly improves the impact strength and has better comprehensive performance.

Description

Production method of BOPET film capable of improving impact strength
Technical Field
The invention relates to the technical field of BOPET films, in particular to a production method of a BOPET film capable of improving impact strength.
Background
The BOPET film is a biaxially oriented polyester film, and the BOPET film generally has the characteristics of high strength, good rigidity, transparency, high glossiness and the like, but has defects in use, so how to develop a BOPET film with better performance is the direction to be researched by workers in the field.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention aims to: a high-stiffness packaging film is provided.
In order to solve the problems, the technical solution of the invention is as follows: a BOPE T film production method capable of improving impact strength, wherein the BOPET film consists of an outer surface layer, a middle core layer and an inner surface layer;
the outer surface layer consists of PET, ECDP, PEG, silicon dioxide and montmorillonite;
the middle core layer consists of PET, ABS, PS-g-GMA, PEN and DBS polyolefin nucleating agents;
the inner surface layer consists of PET, HDPE, PP, SEBS-g-MAH, EPR and maleic anhydride modified polyethylene;
the production method comprises the following steps:
(1) respectively weighing the raw materials according to the proportion of each component of the outer surface layer, the middle core layer and the inner surface layer;
(2) respectively blending raw materials of the outer surface layer, the middle core layer and the inner surface layer, and feeding the raw materials into respective extruders for mixing and plasticizing;
(3) respectively sending the molten melts into a die head, and forming a molten sheet through a flat die head opening after the melts are converged in the die head;
(4) attaching the sheet to a chill roll by using an air knife, quenching to form an unshaped sheet, cooling in water bath, and shaping the sheet to form a cast sheet;
(5) stretching the cast sheet to form a film;
(6) the film detects the thickness through infrared rays, feeds back the corresponding thickness deviation to the die head, and corrects the thickness deviation of the film through the micro-motion of the heating power of the bolt at the corresponding position;
(7) carrying out high-frequency high-voltage spark treatment on the corona surface;
(8) treating the film with ammonia plasma, and grafting amino acid on the surface of the film;
(9) detecting the surface quality of the film by a visual inspection method;
(10) and (5) rolling the film.
Further, the components of the outer surface layer, the middle core layer and the inner surface layer are as follows according to the mass ratio: 20% of outer surface layer, 60% of middle core layer and 20% of inner surface layer.
Further, the components of the outer surface layer are as follows by mass ratio: PET 73%, ECDP 20%, PEG 3%, silicon dioxide 2%, and montmorillonite 2%.
Further, the middle core layer comprises the following components in percentage by mass: 80% of PET, 12% of ABS, 2% of PS-g-GMA, 5% of PEN and 1% of DBS.
Further, the inner surface layer comprises the following components in percentage by mass: 75% of PET, 5% of HDPE, 5% of PP, 12% of SEBS-g-MAH 2%, 12% of EPR and 1% of maleic anhydride modified polyethylene.
Furthermore, the middle core layer consists of a component I and a component II, wherein the component I consists of PET, ABS and PS-g-GMA, and the component II consists of PET, PEN and DBS polyolefin nucleating agents;
the inner surface layer consists of a third component and a fourth component, the third component consists of PET, HDPE, PP and SEBS-g-MAH, and the second component consists of PET, EPR and maleic anhydride modified polyethylene.
Further, in the step (2), the raw materials of the outer surface layer, the middle core layer and the inner surface layer are respectively melted and mixed according to the components, the component I and the component II in a melting state are mixed, and the component III and the component IV are mixed.
Further, the step (8) is specifically:
(81) soaking the film in ethanol for 20h before plasma treatment, and ultrasonically cleaning the film for 10min by using distilled water;
(82) placing the film treated in the step (81) into a plasma treatment instrument, treating the film by using ammonia gas plasma, soaking the film in 40 ℃ glutaraldehyde water solution for 50min, taking out the film, and washing residual glutaraldehyde by using distilled water;
(83) placing the film treated in the step (82) into a saturated urethane solution at 60 ℃ for reaction for 5h, taking out and drying;
(84) after drying, the contact angle of the film was measured.
Further, the step (9) is specifically: the eyes of the testers and the film are at an angle of 45 degrees and are observed at a distance of 250-350mm from the film, 1 detection point is taken for each length of the film under the environment of light intensity of 600-800LUX, and the observation time of each detection point is 3-5 seconds.
The invention has the beneficial effects that:
the outer surface layer is modified by blending PET, ECDP and PEG, the moisture absorption and antistatic performance of the film can be improved by adding PEG, the ECDP contains polyether connecting segments, so that the PEG is more uniformly dispersed in the PET, and the silicon dioxide and montmorillonite are added as inorganic substances, so that the crystallization rate can be accelerated, and the comprehensive performance of the film can be improved;
the middle core layer is modified by blending PET, ABS and PS-g-GMA, so that the notch impact strength and the elongation at break can be improved, the bonding force of two interfaces of the PET and the ABS is improved by adding the PS-g-GMA, and the barrier property and the thermal stability of the film can be improved by blending and modifying the PET, PEN and DBS polyolefin nucleating agents;
the inner surface layer is modified by blending PET, HDPE, PP and SEBS-g-MAH, so that the impact strength of the film is improved, and is further improved by blending modification of PET, EPR and maleic anhydride modified polyethylene;
the film is treated by ammonia plasma, and amino acid is grafted on the surface of the film, so that the hydrophilicity of the film can be improved;
the surface quality of the film is detected by a visual inspection method, so that the detection can be performed without detection equipment, and the cost of the detection equipment is saved.
Detailed Description
For a more intuitive and complete understanding of the technical solution of the present invention, non-limiting features are described as follows:
a BOPET film production method capable of improving impact strength, the BOPET film is composed of an outer surface layer, a middle core layer and an inner surface layer;
the outer surface layer consists of PET, ECDP, PEG, silicon dioxide and montmorillonite;
the middle core layer consists of PET, ABS, PS-g-GMA, PEN and DBS polyolefin nucleating agents;
the inner surface layer consists of PET, HDPE, PP, SEBS-g-MAH, EPR and maleic anhydride modified polyethylene;
the production method comprises the following steps:
(1) respectively weighing the raw materials according to the proportion of each component of the outer surface layer, the middle core layer and the inner surface layer;
(2) respectively blending raw materials of the outer surface layer, the middle core layer and the inner surface layer, and feeding the raw materials into respective extruders for mixing and plasticizing;
(3) respectively sending the molten melts into a die head, and forming a molten sheet through a flat die head opening after the melts are converged in the die head;
(4) attaching the sheet to a chill roll by using an air knife, quenching to form an unshaped sheet, cooling in water bath, and shaping the sheet to form a cast sheet;
(5) stretching the cast sheet to form a film;
(6) the film detects the thickness through infrared rays, feeds back the corresponding thickness deviation to the die head, and corrects the thickness deviation of the film through the micro-motion of the heating power of the bolt at the corresponding position;
(7) carrying out high-frequency high-voltage spark treatment on the corona surface;
(8) treating the film with ammonia plasma, and grafting amino acid on the surface of the film;
(9) detecting the surface quality of the film by a visual inspection method;
(10) and (5) rolling the film.
The outer surface layer, the middle core layer and the inner surface layer comprise the following components in percentage by mass: 20% of outer surface layer, 60% of middle core layer and 20% of inner surface layer.
The outer surface layer comprises the following components in percentage by mass: PET 73%, ECDP 20%, PEG 3%, silicon dioxide 2%, and montmorillonite 2%.
The middle core layer comprises the following components in percentage by mass: 80% of PET, 12% of ABS, 2% of PS-g-GMA, 5% of PEN and 1% of DBS.
The inner surface layer comprises the following components in percentage by mass: 75% of PET, 5% of HDPE, 5% of PP, SEBS-g-MAH 2%, 12% of E PR, and 1% of maleic anhydride modified polyethylene.
The middle core layer consists of a first component and a second component, wherein the first component consists of PET, ABS and PS-g-GMA, the second component consists of PET, PEN and DBS polyolefin nucleating agents, and the mass ratio of the PET in the first component to the PET in the second component is 1: 1.
the inner surface layer consists of a third component and a fourth component, the third component consists of PET, HDPE, PP and SEBS-g-MAH, the second component consists of PET, EPR and maleic anhydride modified polyethylene, and the mass ratio of the PET in the third component to the PET in the fourth component is 1: 1.
in the step (2), the raw materials of the outer surface layer, the middle core layer and the inner surface layer are respectively melted and mixed according to the components, the component I and the component II in a melting state are mixed, and the component III and the component IV are mixed.
The step (8) is specifically as follows:
(81) soaking the film in ethanol for 20h before plasma treatment, and ultrasonically cleaning the film for 10min by using distilled water;
(82) placing the film treated in the step (81) into a plasma treatment instrument, treating the film by using ammonia gas plasma, soaking the film in 40 ℃ glutaraldehyde water solution for 50min, taking out the film, and washing residual glutaraldehyde by using distilled water;
(83) placing the film treated in the step (82) into a saturated urethane solution at 60 ℃ for reaction for 5h, taking out and drying;
(84) after drying, the contact angle of the film was measured.
The step (9) is specifically as follows: the angle that tester eyes and film are 45 degrees is observed for 300 mm with the film distance, and under the environment that illumination intensity is 700LUX, 1 check point is got to the film of each meter length, and every check point observation time is 4 seconds, can save the check out test set cost by the manual work under the equipment that does not use check out test set.
The outer surface layer of the invention is modified by blending PET, ECDP and PEG, the moisture absorption and antistatic property of the film can be improved by adding PEG, the ECDP contains polyether connecting segments, so that the PEG is dispersed in the PET more uniformly, and the silicon dioxide and montmorillonite are added as inorganic substances, so that the crystallization rate can be accelerated, and the comprehensive property of the film can be improved;
the middle core layer is modified by blending PET, ABS and PS-g-GMA, so that the notch impact strength and the elongation at break can be improved, the bonding force of two interfaces of the PET and the ABS is improved by adding the PS-g-GMA, and the barrier property and the thermal stability of the film can be improved by blending and modifying the PET, PEN and DBS polyolefin nucleating agents;
the inner surface layer is modified by blending PET, HDPE, PP and SEBS-g-MAH, so that the impact strength of the film is improved, and is further improved by blending modification of PET, EPR and maleic anhydride modified polyethylene;
the film is treated by ammonia plasma, and amino acid is grafted on the surface of the film, so that the hydrophilicity of the film can be improved.

Claims (9)

1. A production method of BOPET film capable of improving impact strength is characterized by comprising the following steps: the BOPET film consists of an outer surface layer, a middle core layer and an inner surface layer;
the outer surface layer consists of PET, ECDP, PEG, silicon dioxide and montmorillonite;
the middle core layer consists of PET, ABS, PS-g-GMA, PEN and DBS polyolefin nucleating agents;
the inner surface layer consists of PET, HDPE, PP, SEBS-g-MAH, EPR and maleic anhydride modified polyethylene;
the production method comprises the following steps:
(1) respectively weighing the raw materials according to the proportion of each component of the outer surface layer, the middle core layer and the inner surface layer;
(2) respectively blending raw materials of the outer surface layer, the middle core layer and the inner surface layer, and feeding the raw materials into respective extruders for mixing and plasticizing;
(3) respectively sending the molten melts into a die head, and forming a molten sheet through a flat die head opening after the melts are converged in the die head;
(4) attaching the sheet to a chill roll by using an air knife, quenching to form an unshaped sheet, cooling in water bath, and shaping the sheet to form a cast sheet;
(5) stretching the cast sheet to form a film;
(6) the film detects the thickness through infrared rays, feeds back the corresponding thickness deviation to the die head, and corrects the thickness deviation of the film through the micro-motion of the heating power of the bolt at the corresponding position;
(7) carrying out high-frequency high-voltage spark treatment on the corona surface;
(8) treating the film with ammonia plasma, and grafting amino acid on the surface of the film;
(9) detecting the surface quality of the film by a visual inspection method;
(10) and (5) rolling the film.
2. The method for producing BOPET film capable of improving impact strength according to claim 1, wherein the method comprises the following steps: the outer surface layer, the middle core layer and the inner surface layer comprise the following components in percentage by mass: 20% of outer surface layer, 60% of middle core layer and 20% of inner surface layer.
3. The method for producing BOPET film capable of improving impact strength according to claim 1, wherein the method comprises the following steps: the outer surface layer comprises the following components in percentage by mass: PET 73%, ECDP 20%, PEG 3%, silicon dioxide 2%, and montmorillonite 2%.
4. The method for producing BOPET film capable of improving impact strength according to claim 1, wherein the method comprises the following steps: the middle core layer comprises the following components in percentage by mass: 80% of PET, 12% of ABS, 2% of PS-g-GMA, 5% of PEN and 1% of DBS.
5. The method for producing BOPET film capable of improving impact strength according to claim 1, wherein the method comprises the following steps: the inner surface layer comprises the following components in percentage by mass: 75% of PET, 5% of HDPE, 5% of PP, 12% of SEBS-g-MAH 2%, 12% of EPR and 1% of maleic anhydride modified polyethylene.
6. The method for producing BOPET film capable of improving impact strength according to claim 1, wherein the method comprises the following steps:
the middle core layer consists of a first component and a second component, wherein the first component consists of PET, ABS and PS-g-GMA, and the second component consists of PET, PEN and DBS polyolefin nucleating agents;
the inner surface layer consists of a third component and a fourth component, the third component consists of PET, HDPE, PP and SEBS-g-MAH, and the second component consists of PET, EPR and maleic anhydride modified polyethylene.
7. The method for producing BOPET film capable of improving impact strength according to claim 6, wherein the method comprises the following steps: in the step (2), the raw materials of the outer surface layer, the middle core layer and the inner surface layer are respectively melted and mixed according to the components, the component I and the component II in a melting state are mixed, and the component III and the component IV are mixed.
8. The method for producing BOPET film capable of improving impact strength according to claim 1, wherein the method comprises the following steps: the step (8) is specifically as follows:
(81) soaking the film in ethanol for 20h before plasma treatment, and ultrasonically cleaning the film for 10min by using distilled water;
(82) placing the film treated in the step (81) into a plasma treatment instrument, treating the film by using ammonia gas plasma, soaking the film in 40 ℃ glutaraldehyde water solution for 50min, taking out the film, and washing residual glutaraldehyde by using distilled water;
(83) placing the film treated in the step (82) into a saturated urethane solution at 60 ℃ for reaction for 5h, taking out and drying;
(84) after drying, the contact angle of the film was measured.
9. The method for producing BOPET film capable of improving impact strength according to claim 1, wherein the method comprises the following steps: the step (9) is specifically as follows: the eyes of the testers and the film are at an angle of 45 degrees and are observed at a distance of 250-350mm from the film, 1 detection point is taken for each length of the film under the environment of light intensity of 600-800LUX, and the observation time of each detection point is 3-5 seconds.
CN202111471184.6A 2021-12-04 2021-12-04 Production method of BOPET film capable of improving impact strength Pending CN114193888A (en)

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CN102139187A (en) * 2010-01-28 2011-08-03 中国科学院化学研究所 Hyperfiltration membrane or nanofiltration membrane with multi-layered composite structure and preparation method thereof
CN102569452A (en) * 2010-10-20 2012-07-11 苏州尚善新材料科技有限公司 Polymer back panel of solar battery assembly and manufacture method of polymer back panel
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