CN106739322A - A kind of low water absorption BON biaxially oriented nylon film and preparation method thereof - Google Patents
A kind of low water absorption BON biaxially oriented nylon film and preparation method thereof Download PDFInfo
- Publication number
- CN106739322A CN106739322A CN201611107071.7A CN201611107071A CN106739322A CN 106739322 A CN106739322 A CN 106739322A CN 201611107071 A CN201611107071 A CN 201611107071A CN 106739322 A CN106739322 A CN 106739322A
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- Prior art keywords
- top layer
- water absorption
- low water
- composition
- biaxially oriented
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Classifications
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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
- B32B27/06—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
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
Abstract
The present invention provides a kind of low water absorption BON biaxially oriented nylon film, is the three-decker being made up of top layer 1, sandwich layer and top layer 2.Wherein, the composition on the top layer 1 is 60~70%wt PA6,15~20%wt PA12,5~9%wt PA66,1~20%wt additives；Composition in the sandwich layer is 60~70%wt PA6,30~40%wt PA12；The composition on the top layer 2 is 60~70%wt PA6,15~20%wt PA12,5~9%wt PA66,1~20%wt additives；The low water absorption nylon film is by being coextruded and formation after biaxial tension.The invention further relates to a kind of manufacture method of low water absorption nylon film.
Description
Technical field
The invention belongs to flexible package industrial circle, and in particular to a kind of low water absorption BON biaxially oriented nylon film and its preparation
Method.
Technical background
BON biaxially oriented nylon film (BOPA) is a kind of packaging material for integrating various advantages, and intensity is high, the transparency
Good, nontoxic, printing adaptability is good, is widely used in food, medicine and industrial packaging field.But due to its easy moisture absorption with
And the big characteristic of change in size after the moisture absorption, have impact on the matter of operability and packaging of the nylon film in processing and use
Amount.It may be said that easily the moisture absorption is nylon membrane the first big defect in actual applications.
Existing common BOPA films are constituted by nylon 6 and additive, usually three-decker, due to nylon 6 material
Cause its finished size stability very poor with very strong water imbibition, the present invention proposes a kind of nylon with relatively low water absorbing properties
Film and preparation method thereof, to overcome drawbacks described above.
The content of the invention
The scope of the present invention does not receive this section content of the invention only by appended claims defined in any degree
Statement limited.
For existing nylon film it is hygroscopic and water suction after poor dimensional stability problem, the invention provides a kind of low suction
Water rate BON biaxially oriented nylon film, it is characterised in that the film is made up of the three-decker on top layer 1, sandwich layer and top layer 2；
Wherein, the composition on the top layer 1 is 60~70%wt PA6,15~20%wt PA12,5~9%wt PA66,1~20%wt
Additive；Composition in the sandwich layer is 60~70%wt PA6,30~40%wt PA12；The composition on the top layer 2 be 60~
70%wt PA6,15~20%wt PA12,5~9%wt PA66,1~20%wt additives；
Preferably, the composition on the top layer 1 is 68%wt PA6,16%wt PA12,7.2%wt PA66, and 8.8%wt adds
Plus agent；The composition of sandwich layer is 60%wt PA6 and 40%wt PA12；The composition on the top layer 2 is 68%wt PA6,16%wt
PA12,7.2%wt PA66,8.8%wt additive.
Wherein, the thickness on the top layer 1 and top layer 2 is 1.5~3 μm, and core layer thickness is 12~13.5 μm.
Wherein, the additive be selected from opening agent, antistatic additive, slipping agent, anticaking agent, heat stabilizer, antioxidant,
One kind or its combination in photostabilizer, impact resistance modifying agent.
Present invention also offers the preparation method of low water absorption BON biaxially oriented nylon film, including：
Extrusion step, nylon 6, nylon66 fiber and nylon 12 are cut into slices be blended in the ratio of each layer with batch mixer, input
Respective extruder carries out melting coextrusion and obtains nylon sheet；
Stretching step, biaxial tension is carried out after sheet preheating in stretching case, and longitudinal stretching ratio is 2.5~4, cross directional stretch ratio
It is 2.5~3.8；Heat setting step, thermal finalization treatment is carried out by the film after stretching at high temperature；
Winding step, at least one surface to film carries out sided corona treatment, then winds.
Because the water absorption rate of PA12 is relatively low, so by the interworking of several nylon materials, reduction nylon film can be reached
The purpose of water absorption rate.The resin composition and coextrusion stretch processes that are used in the present invention reduce the suction of nylon film
Water rate, improves its dimensional stability.At 25 DEG C, in the air of 55% humidity, its saturation water suction size changing rate is only
0.2%, it is necessary to 30 minutes can be only achieved saturation, and common nylon film can just reach in 20 minutes under the same conditions
1% or so elongation.
Brief description of the drawings
Fig. 1 is the structural representation of low water absorption nylon film of the invention
Specific embodiment
The present invention is described in further detail below in conjunction with drawings and Examples, does not therefore limit the present invention to institute
In the scope of embodiments stated.
The invention provides a kind of low water absorption BON biaxially oriented nylon film, it is characterised in that the film by top layer 1,
The three-decker on sandwich layer and top layer 2 is constituted；Wherein, the composition on the top layer 1 is 60~70%wt PA6,15~20%wt
PA12,5~9%wt PA66,1~20%wt additive；Composition in the sandwich layer is 60~70%wt PA6,30~40%
wt PA12；The composition on the top layer 2 is 60~70%wt PA6,15~20%wt PA12,5~9%wt PA66,1~20%
Wt additives；
Preferably, the composition on the top layer 1 is 68%wt PA6,16%wt PA12,7.2%wt PA66, and 8.8%wt adds
Plus agent；The composition of sandwich layer is 60%wt PA6 and 40%wt PA12；The composition on the top layer 2 is 68%wt PA6,16%wt
PA12,7.2%wt PA66,8.8%wt additive.
Wherein, the thickness on the top layer 1 and top layer 2 is 1.5~3 μm, and core layer thickness is 12~13.5 μm.
Wherein, the additive be selected from opening agent, antistatic additive, slipping agent, anticaking agent, heat stabilizer, antioxidant,
One kind or its combination in photostabilizer, impact resistance modifying agent.
Present invention also offers the preparation method of low water absorption BON biaxially oriented nylon film, including：
Extrusion step, nylon 6, nylon66 fiber and nylon 12 are cut into slices be blended in the ratio of each layer with batch mixer, input
Respective extruder carries out melting coextrusion and obtains nylon sheet；
Stretching step, biaxial tension is carried out after sheet preheating in stretching case, and longitudinal stretching ratio is 2.5~4, cross directional stretch ratio
It is 2.5~3.8；Heat setting step, thermal finalization treatment is carried out by the film after stretching at high temperature；
Winding step, at least one surface to film carries out sided corona treatment, then winds.
Embodiment one
The component of top layer 1 is：70%wt PA6,20%wt PA12,8%wt PA66,2%wt slipping agents and antiblocking agent are mixed
Close material；Sandwich layer component is：60%wt PA6 and 40%wt PA12；The component of top layer 2 is：70%wt PA6,20%wt PA12,
8%wt PA66,2%wt slipping agents and antiblocking agent compound, prepare low water absorption double using preparation method of the present invention
To oriented nylon film.
Example two
The component of top layer 1 is：65%wt PA6,20%wt PA12,9%wt PA66,6%wt slipping agent, antiblocking agent and
Antistatic additive compound；Sandwich layer component is：65%wt PA6 and 35%wt PA12；The component of top layer 2 is：65%wt PA6,20%
Wt PA12,9%wt PA66,6%wt slipping agent, antiblocking agent and antistatic additive compound, using preparation of the present invention
Method prepares low water absorption BON biaxially oriented nylon film.
Example three
The component of top layer 1 is：70%wt PA6,15%wt PA12 and 5%wt PA66,10%wt slipping agent, antiblocking agent
With impact resistance modifying agent compound；Sandwich layer component is：70%wt PA6 and 30%wt PA12；The component of top layer 2 is：70%wt
PA6,15%wt PA12 and 5%wt PA66,10%wt slipping agent, antiblocking agent and impact resistance modifying agent compound；Using
Preparation method of the present invention prepares low water absorption BON biaxially oriented nylon film.
Following table is the film performance index that is obtained according to the structural parameters of the embodiment of the present invention one to three and go out on the market
The contrast of the film performance index sold.
Shown by upper table, the low water absorption nylon film and the nylon film of produced in conventional processes produced using the present invention
Compare, exposure has lower water absorption rate and more preferable dimensional stability in atmosphere.
This disclosed embodiment is believed that and be in all respects illustration, not in any way limiting.The scope of the present invention is not
Limited by the explanation of above-mentioned implementation method, only as shown in the scope of claims, and including having with right
All deformations in the same meaning and right.
Claims (5)
1. a kind of low water absorption BON biaxially oriented nylon film, it is characterised in that the film is by the three of top layer 1, sandwich layer and top layer 2
Rotating fields are constituted；Wherein, the composition on the top layer 1 is 60~70%wt PA6,15~20%wt PA12,5~9%wt
PA66,1~20%wt additive；Composition in the sandwich layer is 60~70%wt PA6,30~40%wt PA12；The table
The composition of layer 2 is 60~70%wt PA6,15~20%wt PA12,5~9%wt PA66,1~20%wt additives.
2. low water absorption BON biaxially oriented nylon film according to claim 1, it is characterised in that the composition on the top layer 1
It is 68%wt PA6,16%wt PA12,7.2%wt PA66,8.8%wt additives；The composition of the sandwich layer is 60%wt
PA6 and 40%wt PA12；The composition on the top layer 2 is 68%wt PA6,16%wt PA12,7.2%wt PA66,8.8%wt
Additive.
3. low water absorption BON biaxially oriented nylon film according to claim 1, it is characterised in that the top layer 1 and top layer 2
Thickness be 1.5~3 μm, core layer thickness be 12~13.5 μm.
4. low water absorption BON biaxially oriented nylon film according to claim 1, it is characterised in that the additive is selected from and opens
One kind in mouth agent, antistatic additive, slipping agent, anticaking agent, heat stabilizer, antioxidant, photostabilizer, impact resistance modifying agent
Or its combination.
5. a kind of preparation method of low water absorption BON biaxially oriented nylon film, including：
Extrusion step, nylon 6, nylon66 fiber and nylon 12 are cut into slices mixed in the ratio of each layer with batch mixer, and input is respective
Extruder carries out melting coextrusion and obtains nylon sheet；
Stretching step, biaxial tension is carried out after sheet preheating in stretching case, and longitudinal stretching ratio is 2.5~4, and cross directional stretch ratio is
2.5~3.8；
Heat setting step, thermal finalization treatment is carried out by the film after stretching at high temperature；
Winding step, at least one surface to film carries out sided corona treatment, then winds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611107071.7A CN106739322B (en) | 2016-12-06 | 2016-12-06 | A kind of low water absorption BON biaxially oriented nylon film and preparation method thereof |
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| CN201611107071.7A CN106739322B (en) | 2016-12-06 | 2016-12-06 | A kind of low water absorption BON biaxially oriented nylon film and preparation method thereof |
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| CN106739322A true CN106739322A (en) | 2017-05-31 |
| CN106739322B CN106739322B (en) | 2018-11-06 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825076A (en) * | 2019-01-31 | 2019-05-31 | 厦门长塑实业有限公司 | A kind of low water absorption, polyamide film of high delustring and preparation method thereof |
| CN110540747A (en) * | 2019-10-12 | 2019-12-06 | 厦门长塑实业有限公司 | Ultrahigh-friction master batch and preparation method thereof, ultrahigh-friction polyamide film and preparation method thereof |
| CN111923538A (en) * | 2020-06-04 | 2020-11-13 | 昆山运融新材料科技有限公司 | Long-acting stable low-haze ultra-smooth BOPA film |
| CN112477335A (en) * | 2020-11-19 | 2021-03-12 | 厦门长塑实业有限公司 | Transparent biaxially oriented polyamide embossed film and preparation method thereof |
| CN113968059A (en) * | 2021-12-04 | 2022-01-25 | 宁波瑞成包装材料有限公司 | Production method of toughened BOPA film |
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| WO2006041186A1 (en) * | 2004-10-12 | 2006-04-20 | Showa Denko K.K | Resin composition containing vapor grown carbon fiber and use thereof |
| CN102615905A (en) * | 2011-01-30 | 2012-08-01 | 厦门长塑实业有限公司 | Biaxially Oriented nylon nanofilm and manufacturing method thereof |
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2016
- 2016-12-06 CN CN201611107071.7A patent/CN106739322B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006041186A1 (en) * | 2004-10-12 | 2006-04-20 | Showa Denko K.K | Resin composition containing vapor grown carbon fiber and use thereof |
| CN102615905A (en) * | 2011-01-30 | 2012-08-01 | 厦门长塑实业有限公司 | Biaxially Oriented nylon nanofilm and manufacturing method thereof |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109825076A (en) * | 2019-01-31 | 2019-05-31 | 厦门长塑实业有限公司 | A kind of low water absorption, polyamide film of high delustring and preparation method thereof |
| CN110540747A (en) * | 2019-10-12 | 2019-12-06 | 厦门长塑实业有限公司 | Ultrahigh-friction master batch and preparation method thereof, ultrahigh-friction polyamide film and preparation method thereof |
| CN110540747B (en) * | 2019-10-12 | 2021-10-22 | 厦门长塑实业有限公司 | Ultrahigh-friction master batch and preparation method thereof, ultrahigh-friction polyamide film and preparation method thereof |
| CN111923538A (en) * | 2020-06-04 | 2020-11-13 | 昆山运融新材料科技有限公司 | Long-acting stable low-haze ultra-smooth BOPA film |
| CN112477335A (en) * | 2020-11-19 | 2021-03-12 | 厦门长塑实业有限公司 | Transparent biaxially oriented polyamide embossed film and preparation method thereof |
| CN113968059A (en) * | 2021-12-04 | 2022-01-25 | 宁波瑞成包装材料有限公司 | Production method of toughened BOPA film |
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| CN106739322B (en) | 2018-11-06 |
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