CN110328948A - A kind of non-stretched polyethylene film with strong, weak heat sealability - Google Patents
A kind of non-stretched polyethylene film with strong, weak heat sealability Download PDFInfo
- Publication number
- CN110328948A CN110328948A CN201910744787.5A CN201910744787A CN110328948A CN 110328948 A CN110328948 A CN 110328948A CN 201910744787 A CN201910744787 A CN 201910744787A CN 110328948 A CN110328948 A CN 110328948A
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- Prior art keywords
- weak
- strong
- sealing
- heat sealability
- layer
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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
- B32B27/18—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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
-
- 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
- B32B2439/00—Containers; Receptacles
- B32B2439/40—Closed containers
Abstract
The invention discloses a kind of non-stretched polyethylene films with strong, weak heat sealability, including at least 3 layers i.e. non-stretched film of hot sealing layer, sandwich layer and corona layer, it is that 56-65% metallocene PE, 27-34% polyolefin elastomer, 2.5-4.5% slipping agent and 1.0-2.5% antiblocking agent hybrid resin are formed that wherein hot sealing layer, which includes mass percent, sandwich layer includes that mass percent is that 95.52-99.04% low density polyethylene (LDPE) is blended with 0.96-4.48% slipping agent, and the main material of corona layer is low density polyethylene (LDPE).The present invention has outstanding heat-sealing can be with wider heat-sealing window, multi-chamber bag edge high heat-sealing strength needs can either be met, and be capable of providing the weak sealing property and suitable heat seal strength of intermediate isolating seam, convenient for manually removing, and release surface is smooth, no broken bag and falls to consider phenomenon to be worth doing.
Description
Technical field
The invention belongs to packaging film technical fields more particularly to a kind of non-stretched poly- with strong, weak heat sealability
Vinyl film.
Background technique
Plastic film is heat-sealable with its, high barrier and the features such as lightweight, be widely used in food, drug and
Daily necessities flexible package.However as the continuous upgrading of consumption, plural compartment package starts prevailing (as shown in Figure 2), this multi-chamber
Integrated packaging bag can for the heterogeneity of pack content, condition (such as: solid and solid, solid and liquid, it is dry with
It is wet etc.) it carries out separating packaging and storage, in actual use, then the heat-sealing isolating weld seam between adjacent packages is opened, it is real
Existing intercommunication, blending and configuration the advantage is that provide and preferably guarantee the quality, protect fragrant or fresh-keeping effect, and do not need
Mixed configuration is carried out by additional tool, vessel, contaminated hidden danger can be prevented.This multi-chamber integrative packaged design form,
It is required that plastics heat sealing film will not only have stronger heat sealability, not broken bag, air tight, leakage can be ensured；And to have
Standby weak sealing property and suitable heat seal strength can ensure that the heat-sealing isolation seam between adjacent chamber manually can be opened or be easy to
Removing, and can be realized barrier packaging effect.
Current published technology can satisfy high heat-sealing strength needs as heat-sealing plastic film, but due to heat-sealing
Temperature window is relatively narrow, when being isolated for the heat-sealing between adjacent chamber, is easy to appear and secures, shuts phenomenon, it is difficult to it removes, or
It is easy to appear bits, scaling-off or broken bag drawback when removing, causes to generate health and security risk.
Summary of the invention
The object of the invention is to remedy the disadvantages of known techniques, provides a kind of not drawing with strong, weak heat sealability
Stretch polyethylene film.
In order to achieve the above purpose, the present invention the following technical schemes are provided:
A kind of non-stretched polyethylene film with strong, weak heat sealability, including at least 3 layers i.e. hot sealing layer, sandwich layer and corona layer
The non-stretched film of structure composition.
The hot sealing layer includes that mass percent is 56-65% metallocene PE, 27-34% polyolefin elastomer, 2.5-
4.5% slipping agent and 1.0-2.5% antiblocking agent hybrid resin are formed.
Further, the metallocene PE density is 0.927g/cm3, melt flow rate (MFR) 3.50g/10min.
Further, the polyolefin elastomer ethylene contents are 9.0wt%, melt flow rate (MFR) 3.70g/10min.
Further, the slipping agent is erucyl amide and/or oleamide.
The sandwich layer is 95.52-99.04% low density polyethylene (LDPE) comprising mass percent and mass percent is 0.96-
4.48% slipping agent is blended.
Further, the low density polyethylene (LDPE) density is 0.923g/cm3, melt flow rate (MFR) 2.4g/10min.
The main material of corona layer is low density polyethylene (LDPE), this face such as needs to carry out printing or compound tense again, need to be to it
Surface carries out sided corona treatment or plasma treatment, to enhance the binding force with ink, adhesive.
The non-stretched polyethylene film with strong, weak heat sealability has stronger heat sealability and wider
Window is sealed, had not only been able to satisfy high heat-sealing strength needs, but also weak sealing property can be provided, and weak cover is easily peelable, weak sealing strength is adjustable
It is whole.
The invention has the advantages that
1, with outstanding heat sealability and wider thermal window, banding high heat-sealing strength needs be not only able to satisfy, but be able to satisfy every
The weak envelope of off-seam needs, and weak sealing strength can be adjusted as needed.
2, weak packing off-seam is easily peelable, and the smooth nothing of release surface falls bits pollution.
3, with outstanding barrier property and bag size stability.
Detailed description of the invention
Fig. 1 show overall structure of the present invention, in which: 1.1 be hot sealing layer；1.2 be sandwich layer；1.3 be corona layer；
Fig. 2 show the multi-chamber bag structural schematic diagram with weak packing off-seam, in which: 2.1 seal by force for edge；2.2 be chamber
1；2.3 be weak packing off-seam；2.4 be chamber 2.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1 is the structural diagram of the present invention, as shown, the film is by hot sealing layer 1.1, sandwich layer 1.2, corona layer 1.3
Three-decker composition.
The present embodiment is using three-layer co-extruded casting technique preparation known to industry, in which: extruder screw temperature is set as
200-230 DEG C, curtain coating roll temperature is 32 DEG C, and chill-roll temperature is 20 DEG C.
1, ingredient and blending: hot sealing layer weighs 60 parts, 34 parts, 4 parts, 2 parts of metallocene PEs, polyolefin elastics respectively
Body, slipping agent and antiblocking agent resin pour into high-speed mixer and are blended；Sandwich layer weighs 98 parts, 2 parts of low density polyethylenes respectively
Alkene and slipping agent are blended；Corona layer weighs 100 parts of low density polyethylene (LDPE)s；
2, it melts co-extrusion: above layers raw material being passed through into respective extruder respectively and is melted, and pass through die head distributor co-extrusion
It is applied to casting roller, forms film base；
3, it winds: above-mentioned 2 film base is wound into film roll after chill roll cooling shaping and sided corona treatment；
4, it cures: above-mentioned 3 film roll being sent into curing chamber, after curing 24-48 hours, then cuts into finished product.
Through the foregoing embodiment, technical solution of the present invention beneficial effect is: can be with wider heat-sealing with outstanding heat-sealing
Window can either meet multi-chamber bag edge high heat-sealing strength needs, and be capable of providing the weak sealing property of intermediate isolating seam and fit
Suitable heat seal strength, convenient for manually removing, and release surface is smooth, no broken bag and falls to consider phenomenon to be worth doing.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and it is consistent to be to fit to the principles and novel features disclosed herein
Widest scope.
Claims (7)
1. a kind of non-stretched polyethylene film with strong, weak heat sealability, which is characterized in that including at least 3 layers i.e. hot sealing layer,
The non-stretched film of sandwich layer and corona layer structure composition.
2. the non-stretched polyethylene film according to claim 1 with strong, weak heat sealability, which is characterized in that described
Hot sealing layer include mass percent be 56-65% metallocene PE, 27-34% polyolefin elastomer, 2.5-4.5% slipping agent and
1.0-2.5% antiblocking agent hybrid resin is formed.
3. the non-stretched polyethylene film according to claim 2 with strong, weak heat sealability, which is characterized in that described
Metallocene PE density is 0.927g/cm3, melt flow rate (MFR) 3.50g/10min；The polyolefin elastomer ethylene contains
Amount is 9.0wt%, melt flow rate (MFR) 3.70g/10min；The slipping agent is erucyl amide and/or oleamide.
4. the non-stretched polyethylene film according to claim 1 with strong, weak heat sealability, which is characterized in that described
Sandwich layer is 95.52-99.04% low density polyethylene (LDPE) comprising mass percent and mass percent is that 0.96-4.48% slipping agent is total
It is mixed to form.
5. the non-stretched polyethylene film according to claim 4 with strong, weak heat sealability, which is characterized in that described
Low density polyethylene (LDPE) density is 0.923g/cm3, melt flow rate (MFR) 2.4g/10min.
6. the non-stretched polyethylene film according to claim 1 with strong, weak heat sealability, which is characterized in that described
The main material of corona layer is low density polyethylene (LDPE), this face such as needs to carry out printing or compound tense again, need to carry out corona to its surface
Processing or plasma treatment, to enhance the binding force with ink, adhesive.
7. the non-stretched polyethylene film according to claim 1 with strong, weak heat sealability, which is characterized in that have
Stronger heat sealability and wider heat-sealing window be not only able to satisfy high heat-sealing strength needs, but also can provide weak sealing property, and weak envelope
Face is easily peelable, weak sealing strength is adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910744787.5A CN110328948A (en) | 2019-08-13 | 2019-08-13 | A kind of non-stretched polyethylene film with strong, weak heat sealability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910744787.5A CN110328948A (en) | 2019-08-13 | 2019-08-13 | A kind of non-stretched polyethylene film with strong, weak heat sealability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110328948A true CN110328948A (en) | 2019-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910744787.5A Pending CN110328948A (en) | 2019-08-13 | 2019-08-13 | A kind of non-stretched polyethylene film with strong, weak heat sealability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022131264A1 (en) * | 2020-12-17 | 2022-06-23 | 凸版印刷株式会社 | Laminate, packaging bag, and standing pouch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0721967A1 (en) * | 1995-01-13 | 1996-07-17 | Norton Performance Plastics Corporation | Thermoplastic seal and wrapping film |
| JPH10119207A (en) * | 1996-10-24 | 1998-05-12 | Dainippon Printing Co Ltd | Laminate and its production |
| CN207291145U (en) * | 2017-09-07 | 2018-05-01 | 上海紫江彩印包装有限公司 | A kind of food medical packaging polyolefin film |
| CN109177415A (en) * | 2018-09-29 | 2019-01-11 | 浙江金石包装有限公司 | A kind of package compound film and preparation method thereof |
-
2019
- 2019-08-13 CN CN201910744787.5A patent/CN110328948A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0721967A1 (en) * | 1995-01-13 | 1996-07-17 | Norton Performance Plastics Corporation | Thermoplastic seal and wrapping film |
| JPH10119207A (en) * | 1996-10-24 | 1998-05-12 | Dainippon Printing Co Ltd | Laminate and its production |
| CN207291145U (en) * | 2017-09-07 | 2018-05-01 | 上海紫江彩印包装有限公司 | A kind of food medical packaging polyolefin film |
| CN109177415A (en) * | 2018-09-29 | 2019-01-11 | 浙江金石包装有限公司 | A kind of package compound film and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022131264A1 (en) * | 2020-12-17 | 2022-06-23 | 凸版印刷株式会社 | Laminate, packaging bag, and standing pouch |
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Application publication date: 20191015 |