CN204322654U - For the RCPP film packed - Google Patents
For the RCPP film packed Download PDFInfo
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- CN204322654U CN204322654U CN201320202214.8U CN201320202214U CN204322654U CN 204322654 U CN204322654 U CN 204322654U CN 201320202214 U CN201320202214 U CN 201320202214U CN 204322654 U CN204322654 U CN 204322654U
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Abstract
The utility model belongs to field of packaging material, is specifically related to a kind of RCPP film for packing and preparation method thereof.This RCPP film is made up of the corona layer fitted successively, intermediate layer and hot sealing layer, and described corona layer is block copolymerization polypropylene layer, and intermediate layer is block copolymerization polypropylene and SEBS elastomer composite layer, and hot sealing layer is block copolymerization polypropylene layer.When preparing this film, by batching successively through extruding operation, cooling and shaping operation, thickness measuring operation, beat operation, corona operation, trimming winding process prepare the cast polypropylene film of resistance to boiling i.e. RCPP film.This RCPP film has good hot sticky performance, boiling resistance energy, has good foreign matter to be mingled with heat sealability.After 135 DEG C of thermophilic digestions, packaging bag can ensure not reveal, indeformable, not curling, not stratified; There is good physical and mechanical properties, the deflection of packaging can be promoted; Adapt to the normal operation of high-speed packaging device.
Description
Technical field
The utility model is field of packaging material, is specifically related to a kind of RCPP film for packing.
Background technology
CPP film is the polypropylene film produced by curtain coating extrusion process, also known as un-stretched polypropylene film.Relative to polyethylene film, polyester film and polyvinyl chloride film, CPP film not only cost is lower, and have that glossiness is high, flatness good, in length and breadth each to performance balance, be easy to heat-sealing and be easy to carry out the features such as metalized.And CPP film also can carry out aluminizing after sided corona treatment, print or with other materials compound, thus CPP film is widely used as the packaging material of food, commodity and electronic product etc.
Existing paper article packaging CPP film greatly mainly with homopolymerization PP be raw material preparation, be mixed into appropriate slipping agent, carry out individual layer and extrude or multi-layer co-extruded rear curtain coating cooling and shaping, after finally the film after cooling and shaping being carried out sided corona treatment, obtain CPP film.Existing homopolymerization PP film not only quality is too hard, and heat sealability and shock resistance poor, urgently improve.
Utility model content
The purpose of this utility model is to provide a kind of RCPP film for packing, and this packaging film not only has excellent heat sealability, and can pliability and shock resistance all better.
For achieving the above object, the utility model have employed following technical scheme: a kind of RCPP film for packing, this film is made up of the corona layer fitted successively, intermediate layer and hot sealing layer, described corona layer is block copolymerization polypropylene layer, intermediate layer is block copolymerization polypropylene modified SEBS elastomer layer, and hot sealing layer is block copolymerization polypropylene layer.
The utility model can also be able to further realization by following technical measures:
Preferably, described SEBS elastomer is Polystyrene-Polyethylene/polybutene-polystyrene.
Preferably, described corona layer, part by weight between intermediate layer and hot sealing layer three are 1:3:1; The percentage by weight of the block copolymerization polypropylene in described intermediate layer is 80 ~ 85%, and the percentage by weight of Polystyrene-Polyethylene/polybutene-polystyrene is 15 ~ 20%.
Preferably, the thickness of described corona layer is 15 ~ 20 μm, and the thickness in intermediate layer is 60 ~ 70 μm, and the thickness of hot sealing layer is 15 ~ 20 μm.
The beneficial effects of the utility model are as follows:
1) the RCPP film, in the utility model is the cast polypropylene film of resistance to boiling using three-layer co-extruded explained hereafter, and advantage is as follows:
A) RCPP film needs at high temperature high cooking, therefore the PP(polypropylene using good heat resistance is needed) resin, though homopolymerization PP resin temperature tolerance is good, but easy embrittlement in digestion process, cause the shock resistance of film to decline, therefore in the three-decker of RCPP film, all employ the block copolymerization PP resin simultaneously with good heat resistance and shock resistance;
B) to be mixed into SEBS elastomer further impact-resistant modified to carry out block copolymerization PP in the intermediate layer of RCPP film, improves pliability and the impact resilience of RCPP film.Described block copolymerization polypropylene modified SEBS elastomer layer and block copolymerization polypropylene and SEBS elastomer composite layer, SEBS take polystyrene as end segment, the ethylene-butene copolymer obtained with polybutadiene hydrogenation is the linear three embedding copolymers of middle spring block, has good weatherability, heat resistance, excellent mechanical property;
The performance of SEBS resin G2806GO is as follows: density 0.91g/cm
3, melt and refer to 5g/10min, styrene-content 30%.
C) in block copolymerization PP strand, distinctive Soft hard segment structure, outside the erosion-resisting characteristics of giving RCPP thin layer excellence, is also supplied to the heat sealability that RCPP thin layer is good, thus ensure that the packaging film in the utility model has higher sealing-strength;
D) block copolymerization PP resin F354NV distinctive surface coarsening effect in curtain coating machine-shaping process, can ensureing that RCPP thin layer is not when adding any slipping agent, opening agent, having suitable opening performance.
The performance of block copolymerization PP resin F354NV is as follows: density 0.91g/cm
3, melt and refer to 3.5g/10min, Vicat softening point 155 DEG C.
2) cast polypropylene film of resistance to boiling, in the utility model i.e. RCPP film has good hot sticky performance, boiling resistance energy, has good foreign matter to be mingled with heat sealability.After 135 DEG C of thermophilic digestions, packaging bag can ensure not reveal, indeformable, not curling, not stratified; There is good physical and mechanical properties, the deflection of packaging can be promoted; Adapt to the normal operation of high-speed packaging device.
Accompanying drawing explanation
Fig. 1 is the structural representation of the RCPP film in the utility model.
The implication marked in figure is as follows:
50-the cast polypropylene film of resistance to boiling
51-corona layer, 52-intermediate layer, 53-hot sealing layer
Detailed description of the invention
As shown in Figure 1, the described cast polypropylene film of resistance to boiling 50 i.e. RCPP film is made up of the corona layer 51 be connected successively, intermediate layer 52 and hot sealing layer 53; Described corona layer 51 is block copolymerization polypropylene layer, and intermediate layer 52 is block copolymerization polypropylene and SEBS elastomer composite layer, and hot sealing layer 53 is block copolymerization polypropylene layer.
Further, described SEBS elastomer is Polystyrene-Polyethylene/polybutene-polystyrene.
Described corona layer 51, part by weight between intermediate layer 52 and hot sealing layer 53 three are 1:3:1; The percentage by weight of the block copolymerization polypropylene in described intermediate layer 52 is 80 ~ 85%, and the percentage by weight of Polystyrene-Polyethylene/polybutene-polystyrene is 15 ~ 20%.
Preferably, as shown in Figure 1, the thickness of described corona layer 51 is 15 ~ 20 μm, and the thickness in intermediate layer 52 is 60 ~ 70 μm, and the thickness of hot sealing layer 53 is 15 ~ 20 μm.
Below in conjunction with specific embodiment, preparation process of the present utility model is elaborated.
Embodiment 1
The preparation of RCPP film comprises following operation successively: extrude operation, cooling and shaping operation, thickness measuring operation, beat operation, corona operation, trimming winding process.
A, extrude in operation: in three extruder hoppers of coextrusion casting machine, add corona layer resin raw material, intermediate layer resin raw material and hot sealing layer resin raw material respectively; Extrude operation and adopt three grades of heating, primary extruder temperature is: 210 DEG C, Secondary Extruder temperature: 225 DEG C, three grades extruder temperatures: 230 DEG C; Die head temperature: 225 DEG C.
Corona layer 51 is by F354NV(block copolymerization polypropylene) form.
Intermediate layer 52 is by F354NV(block copolymerization polypropylene) and G2806GO(Polystyrene-Polyethylene/polybutene-polystyrene) form, and the weight proportion of described F354NV and G2806GO is 80:20.
Hot sealing layer 53 is by F354NV(block copolymerization polypropylene) form.
Corona layer 51, weight ratio between intermediate layer 52 and hot sealing layer 53 three are 1:3:1.
In b, cooling and shaping operation: casting roller carries out quick cooling and shaping to hot melt film under the effect of the servicing unit such as air knife, vacuum tank, casting roller roll surface temperature is 30 DEG C, and roll surface temperature is even; The gap of described air knife is 2mm; The angle of air knife is 16%; Air knife position: 80%; Air knife speed: 35%; Air pressure: 4.8mbar; Vacuum tank wind speed: 25%; Vacuum tank pressure: 1.0mbar.
C, thickness measuring operation: in high-speed and continuous production process, the thickness measuring of film must use contactless tracking automatically to detect.In order to ensure the thickness uniformity of film, the utility model have employed beta thickness gauge.The β ray launched by radioactive source Kr85, through needing the film of detect thickness to be received by the receiver.The data measuring gained can process to computer by automatic feedback, automatically adjust die gap by die orifice thermal expansion bolt, and film thickness is kept evenly.
D, beat operation: deflection device is made up of beat frame and servomotor, thickness deviation accumulation is eliminated in effect, makes the volume film flat appearance after rolling.Beat frame does the closed loop moving that track is parallelogram under the driving of motor, and its result makes film move left and right, and eliminates film thickness deviation accumulation transversely with this.
In e, corona operation: sided corona treatment power is 6.2KW, Corona roller pressure is 2.8bar, the wetting tension of corona surface reaches 42 dynes per centimeter; RCPP film is obtained after sided corona treatment.
F, trimming winding process: wrap-up sequence takes center clearance to batch mode, rolling starting voltage: 9000V; Rolling end voltage: 9500V; Change of lap voltage value added: 2500V; Corona roller drawing tension: 90N; Rear cold roller drawing tension: 95N; Change of lap tension force value added: 10/40N; Rolling drawing tension: 95N; Contact roller tension force: 100N; Contact roller pressure: 100N; Contact roller back pressure; 2.0bar; Rolling density: 90%.
In RCPP film in the present embodiment, the thickness of described corona layer 51 is 20 μm, and the thickness in intermediate layer 52 is 60 μm, and the thickness of hot sealing layer 53 is 20 μm.
Embodiment 2
The preparation of RCPP film comprises following operation successively: extrude operation, cooling and shaping operation, thickness measuring operation, beat operation, corona operation, trimming winding process.
A, extrude in operation: in three extruder hoppers of coextrusion casting machine, add corona layer resin raw material, intermediate layer resin raw material and hot sealing layer resin raw material respectively; Extrude operation and adopt three grades of heating, primary extruder temperature is: 210 DEG C, Secondary Extruder temperature: 225 DEG C, three grades extruder temperatures: 230 DEG C; Die head temperature: 225 DEG C.
Corona layer 51 is by F354NV(block copolymerization polypropylene) form.
Intermediate layer 52 is by F354NV(block copolymerization polypropylene) and G2806GO(Polystyrene-Polyethylene/polybutene-polystyrene) form, and the weight proportion of described F354NV and G2806GO is 85:15.
Hot sealing layer 53 is by F354NV(block copolymerization polypropylene) form.
Corona layer 51, weight ratio between intermediate layer 52 and hot sealing layer 53 three are 1:3:1.
In b, cooling and shaping operation: casting roller carries out quick cooling and shaping to hot melt film under the effect of the servicing unit such as air knife, vacuum tank, casting roller roll surface temperature is 30 DEG C, and roll surface temperature is even; The gap of described air knife is 3mm; The angle of air knife is 16%; Air knife position: 80%; Air knife speed: 35%; Air pressure: 4.8mbar; Vacuum tank wind speed: 25%; Vacuum tank pressure: 1.0mbar.
C, thickness measuring operation: in high-speed and continuous production process, the thickness measuring of film must use contactless tracking automatically to detect.In order to ensure the thickness uniformity of film, the utility model have employed beta thickness gauge.The β ray launched by radioactive source Kr85, through needing the film of detect thickness to be received by the receiver.The data measuring gained can process to computer by automatic feedback, automatically adjust die gap by die orifice thermal expansion bolt, and film thickness is kept evenly.
D, beat operation: deflection device is made up of beat frame and servomotor, thickness deviation accumulation is eliminated in effect, makes the volume film flat appearance after rolling.Beat frame does the closed loop moving that track is parallelogram under the driving of motor, and its result makes film move left and right, and eliminates film thickness deviation accumulation transversely with this.
In e, corona operation: sided corona treatment power is 6.2KW, Corona roller pressure is 2.8bar, the wetting tension of corona surface reaches 42 dynes per centimeter; RCPP film is obtained after sided corona treatment.
F, trimming winding process: winding process takes center clearance to batch mode, rolling starting voltage: 9000V; Rolling end voltage: 9500V; Change of lap voltage value added: 2500V; Corona roller drawing tension: 90N; Rear cold roller drawing tension: 95N; Change of lap tension force value added: 10/40N; Rolling drawing tension: 95N; Contact roller tension force: 100N; Contact roller pressure: 100N; Contact roller back pressure; 2.0bar; Rolling density: 90%.
In RCPP film in the present embodiment, the thickness of described corona layer 51 is 15 μm, and the thickness in intermediate layer 52 is 70 μm, and the thickness of hot sealing layer 53 is 15 μm.
Embodiment 3
The preparation of RCPP film comprises following operation successively: extrude operation, cooling and shaping operation, thickness measuring operation, beat operation, corona operation, trimming winding process.
A, extrude in operation: in three barrels of coextrusion machine, add corona layer resin raw material, intermediate layer resin raw material and hot sealing layer resin raw material respectively; Extrude operation and adopt three grades of heating, primary extruder temperature is: 210 DEG C, Secondary Extruder temperature: 225 DEG C, three grades extruder temperatures: 230 DEG C; Die head temperature: 225 DEG C.
Corona layer 51 is by F354NV(block copolymerization polypropylene) form.
Intermediate layer 52 is by F354NV(block copolymerization polypropylene) and G2806GO(Polystyrene-Polyethylene/polybutene-polystyrene) form, and the weight proportion of described F354NV and G2806GO is 82:18.
Hot sealing layer 53 is by F354NV(block copolymerization polypropylene) form.
Corona layer 51, weight ratio between intermediate layer 52 and hot sealing layer 53 three are 1:3:1.
In b, cooling and shaping operation: casting roller carries out quick cooling and shaping to hot melt film under the effect of the servicing unit such as air knife, vacuum tank, casting roller roll surface temperature is 30 DEG C, and roll surface temperature is even; The gap of described air knife is 3mm; The angle of air knife is 16%; Air knife position: 80%; Air knife speed: 35%; Air pressure: 4.8mbar; Vacuum tank wind speed: 25%; Vacuum tank pressure: 1.0mbar.
C, thickness measuring operation: in high-speed and continuous production process, the thickness measuring of film must use contactless tracking automatically to detect.In order to ensure the thickness uniformity of film, the utility model have employed beta thickness gauge.The β ray launched by radioactive source Kr85, through needing the film of detect thickness to be received by the receiver.The data measuring gained can process to computer by automatic feedback, automatically adjust die gap by die orifice thermal expansion bolt, and film thickness is kept evenly.
D, beat operation: deflection device is made up of beat frame and servomotor, thickness deviation accumulation is eliminated in effect, makes the volume film flat appearance after rolling.Beat frame does the closed loop moving that track is parallelogram under the driving of motor, and its result makes film move left and right, and eliminates film thickness deviation accumulation transversely with this.
In e, corona operation: sided corona treatment power is 6.2KW, Corona roller pressure is 2.8bar, the wetting tension of corona surface reaches 42 dynes per centimeter; RCPP film is obtained after sided corona treatment.
F, trimming winding process: wrap-up sequence takes center clearance to batch mode, rolling starting voltage: 9000V; Rolling end voltage: 9500V; Change of lap voltage value added: 2500V; Corona roller drawing tension: 90N; Rear cold roller drawing tension: 95N; Change of lap tension force value added: 10/40N; Rolling drawing tension: 95N; Contact roller tension force: 100N; Contact roller pressure: 100N; Contact roller back pressure; 2.0bar; Rolling density: 90%.
In RCPP film in the present embodiment, the thickness of described corona layer 51 is 17 μm, and the thickness in intermediate layer 52 is 65 μm, and the thickness of hot sealing layer 53 is 18 μm.
RCPP film embodiment 1 to embodiment 3 prepared carries out mechanical property and heat sealability test, and test result lists in table 1.
Table 1 main performance technical indicator
Testing result shows, having good hot sticky performance, boiling resistance energy for the RCPP film packed, having good foreign matter to be mingled with heat sealability in the utility model.After 135 DEG C of thermophilic digestions, packaging bag can ensure not reveal, indeformable, not curling, not stratified; There is good physical and mechanical properties, the deflection of packaging can be promoted; Adapt to the normal operation of high-speed packaging device.
Claims (3)
1. the RCPP film for packing, this film is made up of the corona layer (51) fitted successively, intermediate layer (52) and hot sealing layer (53), it is characterized in that: described corona layer (51) is block copolymerization polypropylene layer, intermediate layer (52) is block copolymerization polypropylene modified SEBS elastomer layer, and hot sealing layer (53) is block copolymerization polypropylene layer.
2. the RCPP film for packing according to claim 1, is characterized in that: described SEBS elastomer is Polystyrene-Polyethylene/polybutene-polystyrene.
3. the RCPP film for packing according to claim 1 and 2, is characterized in that: the thickness of described corona layer (51) is 15 ~ 20 μm, and the thickness of intermediate layer (52) is 60 ~ 70 μm, and the thickness of hot sealing layer (53) is 15 ~ 20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320202214.8U CN204322654U (en) | 2013-04-19 | 2013-04-19 | For the RCPP film packed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320202214.8U CN204322654U (en) | 2013-04-19 | 2013-04-19 | For the RCPP film packed |
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| Publication Number | Publication Date |
|---|---|
| CN204322654U true CN204322654U (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320202214.8U Expired - Lifetime CN204322654U (en) | 2013-04-19 | 2013-04-19 | For the RCPP film packed |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972346A (en) * | 2017-12-15 | 2018-05-01 | 广东威孚包装材料有限公司 | A kind of CPP high temperature resistants protective film basement membrane and preparation method thereof |
| CN109016760A (en) * | 2018-07-26 | 2018-12-18 | 黄山永新股份有限公司 | A kind of high Hot Tack strength high barrier aluminum-plating film and its production method |
-
2013
- 2013-04-19 CN CN201320202214.8U patent/CN204322654U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107972346A (en) * | 2017-12-15 | 2018-05-01 | 广东威孚包装材料有限公司 | A kind of CPP high temperature resistants protective film basement membrane and preparation method thereof |
| CN109016760A (en) * | 2018-07-26 | 2018-12-18 | 黄山永新股份有限公司 | A kind of high Hot Tack strength high barrier aluminum-plating film and its production method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150513 |